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Hurricane Idalia Hits North Florida

Hurricane Idalia hit North Florida on Wednesday morning. At 8:00 a.m. EDT on Wednesday the center of Hurricane Idalia was located at latitude 29.9°N and longitude 83.5°W which put it about 10 miles (15 km) south-southeast of Perry, Florida. Idalia was moving toward the north-northeast at 18 m.p.h. (30 km/h). The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 140 m.p.h. (220 km/h). The minimum surface pressure was 950 mb.

A Hurricane Warning was in effect for the portion of the coast from Indian Pass to the middle of Longboat Key, Florida. The Hurricane Warning included Tampa Bay. A Hurricane Warning was also in effect for the portion of the coast from Altamaha Sound, Georgia to Edisto Beach, South Carolina. . A Hurricane Watch was in effect for the portion of the coast from the Mouth of the St. Mary’s River, Florida to Altamaha Sound, Georgia. A Hurricane Watch was in effect for the portion of the coast from Edisto Beach to South Santee River, South Carolina. The Hurricane Watch included Charleston, South Carolina. A Tropical Storm Warning was in effect for the portion of the coast from Bonita Beach to the middle of Longboat Key, Florida. A Tropical Storm Warning was also in effect for the portion of the coast from Indian Pass to Mexico Beach, Florida. A Tropical Storm Warning was in effect for the portion of the coast from Sebastian Inlet, Florida to Altamaha Sound, Georgia. A Tropical Storm Warning was in effect for the portion of the coast from Edisto Beach, South Carolina to the North Carolina/Virginia border. The Tropical Storm Warning included Charleston, South Carolina, Pamlico Sound and Albemarle Sound.

The center of Hurricane Idalia made landfall on the coast of Florida near Keaton Beach on Wednesday morning. The maximum sustained wind speed was 125 m.p.h. (200 km/h) at the time of landfall. Winds to hurricane force extended out 25 miles (40 km) from the center of Hurricane Idalia. Winds to tropical storm force extended out 140 miles (220 km) in the eastern side of Idalia’s circulation. Winds to tropical storm force extended out 70 miles (110 km) in the western side of Idalia. The Hurricane Intensity Index (HII) was 23.6. The Hurricane Size Index (HSI) was 9.6 and the Hurricane Wind Intensity Size Index (HWISI) was 33.2. Hurricane Idalia was similar in size and intensity to Hurricane Dennis when Dennis hit Northwest Florida in 2005.

The winds in Hurricane Idalia were blowing water toward the west coast of Florida. Those winds were causing a storm surge along the coast. A Storm Surge Warning was in effect for the portion of the coast from Englewood to Indian Pass, Florida. The Storm Surge Warning included Tampa Bay. A Storm Surge Warning was also in effect for the portion of the coast from St. Catherine’s Sound, Georgia to South Santee River, South Carolina. The Storm Surge Warning included Charleston, South Carolina.

Hurricane Idalia was dropping heavy rain over parts of northern Florida, southern Georgia and southwestern South Carolina. Heavy rain is likely to cause flash floods in some locations. Flood Watches were in effect for parts of northern Florida, southern Georgia, South Carolina and North Carolina.

An upper level trough over the central U.S. will steer Hurricane Idalia toward the northeast during the next 24 hours. On its anticipated track, Hurricane Idalia will move inland over northern Florida and southeastern Georgia. The center of Idalia will be near Charleston, South Carolina on Wednesday night. Hurricane Idalia will weaken gradually as the center of circulation moves farther inland. Idalia will bring strong gusty winds to northern Florida, southeastern Georgia, coastal South Carolina and coastal North Carolina. Widespread electricity outages could occur. The wind will continue to blow water toward the west coast of Florida during the next few hours and the storm surge will continue. Hurricane Idalia will continue to drop locally heavy rain over parts of northern Florida, and southern Georgia. Heavy rain will spread over parts of South Carolina and North Carolina.

Elsewhere over the Atlantic Ocean, Hurricane Franklin was west-northwest of Bermuda. At 8:00 a.m. EDT on Wednesday the center of Hurricane Franklin was located at latitude 33.3°N and longitude 67.6°W which put it about 180 miles (290 km) west-northwest of Bermuda. Franklin was moving toward the northeast at 13 m.p.h. (21 km/h). The maximum sustained wind speed was 110 m.p.h. (175 km/h) and there were wind gusts to 130 m.p.h. (210 km/h). The minimum surface pressure was 956 mb. A Tropical Storm Warning was in effect for Bermuda.

Idalia Strengthens to a Hurricane

Former Tropical Storm Idalia strengthened to a hurricane over the southeastern Gulf of Mexico on Tuesday morning. At 8:00 a.m. EDT on Tuesday the center of Hurricane Idalia was located at latitude 23.8°N and longitude 84.8°W which put it about 320 miles (515 km) south-southwest of Tampa, Florida. Idalia was moving toward the north at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (145 km/h). The minimum surface pressure was 977 mb.

A Hurricane Warning was in effect for the portion of the coast from Indian Pass to the middle of Longboat Key, Florida. The Hurricane Warning included Tampa Bay. A Hurricane Warning was also in effect for the Cuban Province of Pinar del Rio. A Hurricane Watch was in effect for the portion of the coast from Englewood to the middle of Longboat Key, Florida. A Tropical Storm Warning was in effect for the portion of the coast from Chokoloskee to the middle of Longboat Key, Florida. A Tropical Storm Warning was also in effect for the portion of the coast from Indian Pass to Mexico Beach, Florida. A Tropical Storm Warning was in effect for the Dry Tortugas. A Tropical Storm Warning was in effect for the portion of the coast from Sebastian Inlet, Florida to Altamaha Sound, Georgia. A Tropical Storm Warning was also in effect for the Cuban Province. of Isle of Youth. A Tropical Storm Watch was in effect for the Lower Florida Keys west of Seven Mile Bridge. A Tropical Storm Watch was also in effect for the portion of the coast from Altamaha Sound, Georgia to South Santee River, South Carolina.

Former Tropical Storm Idalia strengthened to a hurricane after the center of Idalia moved north of the western end of Cuba. The inner end of a rainband wrapped around the center of Idalia’s circulation. A weather radar at La Bajada, Cuba showed a small eye developed at the center of Hurricane Idalia. The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Idalia’s circulation. Storms near the core generated upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane Idalia grew larger when Idalia intensified. Winds to hurricane force extended out 20 miles (30 km) from the center of Idalia’s circulation. Winds to tropical storm force extended out 160 miles (260 km) from the center of circulation.

Hurricane Idalia will move into an environment that will be favorable for intensification during the next 24 hours. Idalia will be over water where the Sea Surface Temperatures are near 30°C. It will move into a region between an upper level ridge over the Yucatan Peninsula and an upper level trough over the central U.S. The upper level winds are weaker between the ridge and the trough and there will be little vertical wind shear during the next 12 to 18 hours. The upper level winds will be stronger when Idalia moves closer to the upper level trough on Wednesday morning. Hurricane Idalia will intensify during the next 24 hours. Idalia could intensify rapidly now that an inner core with an eye and an eyewall have developed. Hurricane Idalia could strengthen to a major hurricane.

Tropical Storm Idalia will move around the western end of high pressure system over the western Atlantic Ocean. The high pressure system and the upper level trough over the central U.S. will steer Idalia toward the north-northeast during the next 24 hours. On its anticipated track, Hurricane Idalia is likely to make landfall on the coast of the northeast Gulf of Mexico on Wednesday morning. Idalia could make landfall as a major hurricane.

Hurricane Idalia is forecast to be a major hurricane when it reaches the coast of Florida. Idalia could be similar in size and intensity to Hurricane Dennis when Dennis hit Northwest Florida in 2005. Hurricane Idalia is likely to make landfall in an area where high storm surges can occur. Idalia could cause a storm surge of up to 12 feet (3.5 meters) near where the center makes landfall. A Storm Surge Warning has been issued for the portion of the coast from Englewood to Indian Pass, Florida. The Storm Surge Warning includes Tampa Bay. Hurricane Idalia will bring strong winds and heavy rain to parts of central and northern Florida. Widespread outages of electricity are likely. Heavy rain could cause flash floods in some locations.

Elsewhere, Hurricane Franklin was a Category 4 hurricane on the Saffir-Simpson Scale over the Atlantic Ocean west-southwest of Bermuda. At 8:00 a.m. EDT on Tuesday the center of Hurricane Franklin was located at latitude 30.4°N and longitude 70.7°W which put it about 370 miles (600 km) west-southwest of Bermuda. Franklin was moving toward the north-northeast at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 140 m.p.h. (220 km/h) and there were wind gusts to 165 m.p.h. (270 km/h). The minimum surface pressure was 941 mb. A Tropical Storm Watch was in effect for Bermuda.

Tropical Storm Idalia Causes Hurricane Warning for West Coast of Florida

The imminent threat posed by Tropical Storm Idalia caused the issuance of a Hurricane Warning for the west coast of Florida on Monday morning. At 11:00 a.m. EDT on Monday the center of Tropical Storm Idalia was located at latitude 20.8°N and longitude 85.2°W which put it about 80 miles (130 km) south-southwest of the western end of Cuba. Idalia was moving toward the north at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 990 mb.

A Hurricane Warning was in effect for the portion of the coast from the Ochlockonee River to the middle of Longboat Key, Florida. The Hurricane Warning included Tampa Bay. A Hurricane Warning was also in effect for the Cuban Province of Pinar del Rio. A Hurricane Watch was in effect for the portions of the coast from Englewood to the middle of Longboat Key, Florida and from the Ochlockonee River to Indian Pass, Florida. A Tropical Storm Warning was in effect for the portion of the coast from Chokoloskee to the middle of Longboat Key, Florida. A Tropical Storm Warning was also in effect for the portion of the coast from the Ochlockonee River to Indian Pass, Florida. A Tropical Storm Warning was in effect for the Dry Tortugas. A Tropical Storm Warning was in effect for the portion of the coast from Tulum to Rio Lagartos, Mexico. The Tropical Storm Warning included Cozumel. A Tropical Storm Warning was also in effect for the Cuban Province. of Isle of Youth. A Tropical Storm Watch was in effect for the Lower Florida Keys west of Seven Mile Bridge. A Tropical Storm Watch was also in effect for the portion of the coast from Sebastian Inlet, Florida to Altamaha Sound, Georgia.

Tropical Storm Idalai strengthened gradually on Monday morning. Winds to tropical storm force extended out 100 miles (160 km) from the center of Idalia’s circulation. Even though Tropical Storm Idalia was stronger, the distribution of thunderstorms was asymmetrical. Most of the thunderstorms in Idalia were in bands in the southern and eastern parts of the circulation. Bands north and west of the center of circulation consisted primarily of showers and lower clouds. Tropical Storm Idalia was under the eastern part of an upper level ridge over the Yucatan Peninsula. The ridge was producing northeasterly winds that were blowing toward the top of Idalia’s circulation. Those winds were causing vertical wind shear and the wind shear was causing the asymmetrical distribution of thunderstorms.

Tropical Storm Idalia will move into an environment that will become more favorable for intensification during the next 24 hours. Idalia will be over water where the Sea Surface Temperatures are near 30°C. It will move into a region between the upper level ridge over the Yucatan Peninsula and an upper level low over the northern Gulf of Mexico. The upper level winds are weaker between the ridge and the low and there will be less vertical wind shear. Tropical Storm Idalia will intensify to a hurricane during the next 24 hours. Idalia could intensify rapidly when the upper level winds weaken. Idalia could strengthen to a major hurricane on Tuesday.

Tropical Storm Idalia will move around the western end of high pressure system over the western Atlantic Ocean. The high pressure system will steer Idalia toward the north during the next 24 hours. The center of Idalia will pass near the western end of Cuba in a few hours. On its anticipated track Tropical Storm Idalia will move over the eastern Gulf of Mexico on Monday night. An upper level trough over the eastern U.S. will turn Idalia toward the northeast later on Tuesday. Idalia is likely to make landfall on the west coast of Florida on Wednesday morning. Idalia could make landfall as a major hurricane.

Tropical Storm Idalia will drop heavy rain over parts of the northeastern Yucatan Peninsula and western Cuba. Heavy rain could cause flash floods in some locations.

Tropical Storm Idalia could be be a major hurricane when it reaches the west coast of Florida. Idalia is likely to make landfall in an area where high storm surges can occur. Idalia could cause a storm surge of up to 12 feet (3.5 meters) near where the center makes landfall. A Storm Surge Warning has been issued for the portion of the coast from Englewood to Ocholockonee River, Florida. The Storm Surge Warning includes Tampa Bay. Idalia will bring strong winds and heavy rain to parts of central and northern Florida. Widespread outages of electricity are likely. Heavy rain could cause flash floods in some locations.

Elsewhere, Hurricane Franklin rapidly intensified to Category 4 on the Saffir-Simpson Scale was over the Atlantic Ocean southwest of Bermuda. At 11:00 a.m. EDT on Monday the center of Hurricane Franklin was located at latitude 27.8°N and longitude 71.0°W which put it about 480 miles (770 km) southwest of Bermuda. Franklin was moving toward the north at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 145 m.p.h. (230 km/h) and there were wind gusts to 170 m.p.h. (280 km/h). The minimum surface pressure was 937 mb. A Tropical Storm Watch was in effect for Bermuda.

Tropical Storm Nicole Brings Wind and Rain to Florida

Tropical Storm Nicole brought wind and rain to Florida on Thursday. At 4:00 p.m. EST on Thursday the center of Tropical Storm Nicole was located at latitude 29.4°N and longitude 83.2°W which put it about 25 miles (40 km) northwest of Cedar Key, Florida. Nicole was moving toward the northwest at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 990 mb.

A Tropical Storm Warning was in effect for the portion of the coast from the Flagler/Volusia County Line, Florida to Altamaha Sound, Georgia. The Tropical Storm Warning included Jacksonville. A Tropical Storm Warning was also in effect for the portion of the coast from Aripeka to Indian Pass, Florida.

Tropical Storm Nicole brought wind and rain as it moved across Central Florida. Nicole weakened gradually as it moved across the Florida Peninsula, but it still had a well organized circulation. Bands of showers and thunderstorms were revolving around the center of circulation. Winds to tropical storm force extended out 170 miles (275 km) from the center of Nicole’s circulation.

The strongest winds in Tropical Storm Nicole occurred near the east coast of Florida on Thursday. A weather station in Daytona Beach reported a sustained wind speed of 49 m.p.h. (79 km/h) and a wind gust of 70 m.p.h. (113 km/h). A weather station in St. Augustine reported a sustained wind speed of 46 m.p.h. (74 km/h) and a wind gust of 59 m.p.h. (95 km/h). A weather station in Jacksonville reported a sustained wind speed of 37 m.p.h. (59 km/h) and a wind gust of 56 m.p.h. (91 km/h). The winds were weaker along the west coast of Florida. A weather station in Tampa reported a sustained wind speed of 29 m.p.h. (46 km/h) and a wind gust of 53 m.p.h. (85 km/h).

An upper level trough and a surface cold front over the central U.S. will turn Tropical Storm Nicole toward the northeast during Thursday night. The center of Nicole will be over southern Georgia on Thursday night and it could be over western South Carolina by Friday afternoon. Tropical Storm Nicole will continue to weaken during the next 24 hours. Nicole will produce gusty winds over northern Florida, southern Georgia and parts of South Carolina. Those winds could cause scattered power outages. The large waves causing serious beach erosion along the east coast of Florida will start to diminish on Friday. Waves could cause some erosion of beaches in Georgia and South Carolina on Friday when Tropical Storm Nicole moves farther to the north. Nicole could drop locally heavy rain over parts of northern Florida, southern Georgia, and South Carolina. Heavy rain could cause floods in some locations.

Nicole Transitions to Tropical Storm, Hurricane Warning Issued for Florida

Former Subtropical Storm Nicole completed a transition to a tropical storm on Tuesday morning and a Hurricane Warning was issued for a portion of the east coast of Florida. At 10:00 a.m. EST on Tuesday the center of Tropical Storm Nicole was located at latitude 27.8°N and longitude 72.7°W which put it about 460 miles (740 km) east of West Palm Beach, Florida. Nicole was moving toward the west at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 994 mb.

A Hurricane Warning was in effect for the portion of the coast from Boca Raton to the Flagler/ Volusia County Line, Florida. The Hurricane Warning included West Palm Beach, Ft. Pierce, Melbourne and Daytona Beach. A Hurricane Warning was in effect for the Abacos, Berry Islands, Bimini and Grand Bahama Island. A Hurricane Watch was in effect for the portion of the coast from the Flagler/Volusia County Line to Ponte Vedra Beach, Florida. A Hurricane Watch was in effect for the portion of the coast from Hallandale Beach to Boca Raton, Florida. A Hurricane Watch was in effect for Lake Okeechobee. Tropical Storm Warnings were in effect for Andros Island, New Providence and Eleuthera. A Tropcial Storm Warning was in effect for the portion of the coast from Hallandale Beach to Boca Raton, Florida. A Tropical Storm Warning was in effect for the portion of the coast from Altamaha Sound, Georgia to the Flagler/Volusia County Line, Florida. The Tropical Storm Warning includes Jacksonville. A Tropical Storm Watch was in effect for the portion of the coast from Hallandale Beach to Ocean Reef, Florida. The Tropical Storm Watch included Miami. A Tropical Storm Watch was in effect for the portion of the coast from Bonita Beach to the Ochlockonee River, Florida. A Tropical Storm Watch was in effect for the portion of the coast from Altamaha Sound to Savannah River, Georgia.

More thunderstorms formed near the center of former Subtropical Storm Nicole’s circulation. Thunderstorms near the center of circulation is one of the characteristics of a tropical storm. When the thunderstorms near the center persisted, the National Hurricane Center indicated that Nicole had complete a transition to a tropical storm. There was still a large area of tropical storm force winds around Nicole. Winds to tropical storm force extended out about 380 miles (615 km) in the northern side of Tropical Storm Nicole. Those winds were not entirely being produced by Nicole’s circulation. A large surface high pressure system was over the northeastern U.S. The high pressure system was interacting with the northern side of Nicole’s circulation to generate the large area of tropical storm force winds.

Tropical Storm Nicole will move through an environment that is favorable for intensification during the next 24 hours. Nicole will move over water where the Sea Surface Temperatures are near 28˚C. It will move into a region where the upper level winds are weaker and the vertical wind shear will diminish. Tropical Storm Nicole is likely to intensify gradually during the next 12 hours. Nicole will move over warmer water when it moves over the Gulf Stream on Wednesday. Nicole will extract more energy from the warmer water and it is likely to strengthen more rapidly on Wednesday. Tropical Storm Nicole could intensify to a hurricane when it moves over the warmer water.

The surface high pressure system currently over the northeastern U.S. will block Tropical Storm Nicole from moving toward the north. The high pressure system will steer Nicole toward the west-southwest during the next 18 hours. On its anticipated track Tropical Storm Nicole will reach the Northwestern Bahamas on Wednesday morning. Nicole will move toward the west-northwest on Wednesday when it reaches the southwestern part of the high pressure system. Nicole will reach the east coast of Florida on Wednesday night. Nicole could be a hurricane when it reaches Florida. Nicole is likely to bring strong, gusty winds and locally heavy rain to the Northwestern Bahamas and to central and northern Florida. The winds in the northern side of Nicole will blow water toward the coast of Florida and the Southeast U.S. Those winds will cause a storm surge and serious beach erosion when Nicole moves toward the coast.

Subtropical Storm Nicole Strengthens

Subtropical Storm Nicole strengthened on Tuesday morning as it moved over the Western Atlantic Ocean east of the Bahamas. At 7:00 a.m. EST on Tuesday the center of Subtropical Storm Nicole was located at latitude 27.7°N and longitude 72.0°W which put it about 385 miles (615 km) east of the Northwestern Bahamas. Nicole was moving toward the west-northwest at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 992 mb.

A Hurricane Warning was in effect for the Abacos, Berry Islands, Bimini and Grand Bahama Island. A Hurricane Watch was in effect for the portion of the coast from the Volusia/Brevard County Line to Hallandale Beach, Florida. The Hurricane Watch included Melbourne, West Palm Beach and Ft. Lauderdale. A Hurricane Watch was in effect for Lake Okeechobee. Tropical Storm Warnings were in effect for Andros Island, New Providence and Eleuthera. A Tropical Storm Warning was in effect for the portion of the coast from Altamaha Sound, Georgia to Hallandale Beach, Florida. The Tropical Storm Warning includes Jacksonville and Daytona Beach. A Tropical Storm Watch was in effect for the portion of the coast from Hallandale Beach to Ocean Reef, Florida. The Tropical Storm Watch included Miami. A Tropical Storm Watch was in effect for the portion of the coast from Bonita Beach to the Ochlockonee River, Florida.

Subtropical Storm Nicole began a transition to a tropical storm on Tuesday morning as it gradually strengthened. More thunderstorms formed near the center of Nicole’s circulation. Thunderstorms near the center of circulation is one of the characteristics of a tropical storm. There was still a large area of tropical storm force winds around Nicole, which is one of the characteristics of a subtropical storm. Winds to tropical storm force extended out almost 400 miles (645 km) in the northern side of Subtropical Storm Nicole. Those winds were not entirely being produced by Nicole’s circulation. A large surface high pressure system was over the northeastern U.S. The high pressure system was interacting with the northern side of Nicole’s circulation to generate the large area of tropical storm force winds.

Subtropical Storm Nicole will move through an environment that is favorable for a transition to a tropical storm during the next 24 hours. Nicole will move over water where the Sea Surface Temperatures are near 28˚C. It will move into a region where the upper level winds are weaker and the vertical wind shear will diminish. Subtropical Storm Nicole is likely to complete the transition to a tropical storm during the next 24 hours. Nicole will move over warmer water when it moves over the Gulf Stream on Wednesday. Nicole could intensify to a hurricane when it moves over the warmer water.

The surface high pressure system currently over the northeastern U.S. will block Subtropical Storm Nicole from moving toward the north. The high pressure system will steer Nicole toward the west-southwest during the next 24 hours. On its anticipated track Subtropical Storm Nicole will reach the Northwestern Bahamas on Wednesday morning. Nicole will move toward the west-northwest on Wednesday when it reaches the southwestern part of the high pressure system. Nicole will reach the coast of Southeast Florida on Wednesday night. Nicole could be a hurricane when it reaches Florida. Nicole is likely to bring strong, gusty winds and locally heavy rain to the Northwestern Bahamas and to central and northern Florida. The winds in the northern side of Nicole will blow water toward the coast of Florida and the Southeast U.S. Those winds will cause a storm surge and serious beach erosion when Nicole moves toward the coast.

Subtropical Storm Nicole Prompts Hurricane Watch for South Florida

A probable threat posed by Subtropical Storm Nicole prompted the issuance of a Hurricane Watch for part of South Florida on Monday. At 1:00 p.m. EST on Monday the center of Subtropical Storm Nicole was located at latitude 26.4°N and longitude 70.1°W which put it about 465 miles (720 km) east of the Northwestern Bahamas. Nicole was moving toward the northwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 1001 mb.

A Hurricane Watch was in effect for the portion of the coast from the Volusia/Brevard County Line to Hallandale Beach, Florida. The Hurricane Watch included Melbourne, West Palm Beach and Ft. Lauderdale. A Hurricane Watch was in effect for Lake Okeechobee. A Hurricane Watch was in effect for the Northwestern Bahamas. A Tropical Storm Watch was in effect for the portion of the coast from Altamaha Sound, Georgia to the Volusia/Brevard County Line, Florida. The Tropical Storm Watch included Jacksonville and Daytona Beach. A Tropical Storm Watch was in effect for the portion of the coast from Hallandale Beach to Ocean Reef, Florida. The Tropical Storm Watch included Miami.

Subtropical Storm Nicole was churning over the Atlantic Ocean east of the Bahamas on Monday afternoon. The circulation around Subtropical Storm Nicole continued to exhibit a complex structure that is fairly common late in the hurricane season. The surface center of circulation was northeast of an upper level low east of Florida. The strongest winds near the surface were occurring far to the east of the surface center. Winds to tropical storm force extended out 275 miles (445 km) in the eastern side of Subtropical Storm Nicole. Winds to tropical storm force extended out 80 miles (130 km) in the northwestern quadrant of Nicole. The winds in the southwestern quadrant of Nicole’s circulation were blowing at less than tropical storm force.

Subtropical Storm Nicole will move through an environment that is favorable for a gradual transition to a tropical storm during the next 48 hours. Nicole will move over water where the Sea Surface Temperatures are near 28˚C. The upper level low east of Florida will produce southerly winds that will blow across the top of the surface center of Subtropical Storm Nicole during the next 24 hours. Those winds will cause moderate vertical wind shear and the wind shear will inhibit intensification. Nicole will move into a region where the upper level winds are weaker on Tuesday and the wind shear will diminish. Subtropical Storm Nicole is likely to strengthen gradually during the next 24 hours. Nicole will move over warmer water when it moves over the Gulf Stream on Wednesday. Subtropical Storm Nicole is likely to make a transition to a tropical storm when it moves over the warmer water. Nicole could intensify to a hurricane when it moves over the warmer water.

The upper level low east of Florida will steer Subtropical Storm Nicole toward the northwest during the next 18 hours. A surface high pressure system currently over the Great Lakes will move over the East Coast of the U.S. and the western Atlantic Ocean. The high pressure system will block Nicole from moving toward the north. The high pressure system will steer Nicole toward the west-southwest on Tuesday and Wednesday. On its anticipated track Subtropical Storm Nicole could reach the Northwestern Bahamas on Wednesday morning. Nicole could reach the coast of Southeast Florida on Wednesday night. Nicole could be a hurricane when it reaches Florida. Nicole is likely to bring strong, gusty winds and locally heavy rain to the Northwestern Bahamas and southern Florida. The winds in the northern side of Nicole will blow water toward the coast of Florida and the Southeast U.S. Those winds will cause a storm surge and serious beach erosion when Nicole moves toward the coast.

Major Hurricane Ian Hits Western Cuba

Hurricane Ian rapidly intensified to a major hurricane before it hit western Cuba on Tuesday morning. At 8:00 a.m. EDT on Tuesday the center of Hurricane Ian was located at latitude 22.6°N and longitude 83.6°W which put it about 10 miles (15 km) north-northeast of Pinar del Rio, Cuba. Ian was moving toward the north-northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 125 m.p.h. (200 km/h) and there were wind gusts to 150 m.p.h. (240 km/h). The minimum surface pressure was 950 mb.

A Hurricane Warning was in effect for the portion of the coast from Bonita Beach to Anclote River, Florida. The Hurricane Warning included Tampa Bay. Hurricane Warnings were in effect for the Cuban provinces of Isla Juventud, Pinar del Rio and Artemisa. A Hurricane Watch was in effect for the portion of the coast from Anclote River to Suwannee River, Florida. Tropical Storm Warnings were in effect for the Lower Florida Keys from Channel 5e Bridge to Key West including the Dry Tortugas. A Tropical Storm Warning was in effect for the portion of the coast from Flamingo to Bonita Beach, Florida. A Tropical Storm Warning was in effect for Lake Okeechobee. A Tropcial Storm Warning was in effect for the portion of the coast from Anclote River to Suwannee River, Florida. A Tropical Storm Warning was in effect for the portion of the coast from Jupiter Inlet to the Volusia/Brevard County Line, Florida. Tropical Storm Warnings were also in effect for the Cuban provinces of La Habana, Mayabeque and Matanzas. A Tropical Storm Watch was in effect for the portion of the coast from Suwannee River to Indian Pass, Florida. A Tropical Storm Watch was in effect for the portion of the coast from Deerfield Beach to Jupiter Inlet, Florida. A Tropical Storm Watch was in effect for the portion of the coast from the Volusia/Brevard County Line, Florida to Altamaha Sound, Georgia.

Hurricane Ian rapidly intensified to a major hurricane before making landfall in western Cuba on Tuesday morning. A circular eye with a diameter of 30 miles (50 km) was at the center of Ian’s circulation. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Hurricane Ian. Storms near the core generated upper level divergence that pumped mass away form the hurricane in all directions. The removal of large quantities of mass was allowing the surface pressure to decrease rapidly.

Winds to hurricane force extended out 35 miles (55 km) from the center of Hurricane Ian’s circulation. Winds to tropical storm force extended out 115 miles (185 km) from the center of circulation. The Hurricane Intensity Index (HII) was 23.6 The Hurricane Size Index (HSI) was 11.5 and the Hurricane Wind Intensity Size Index (HWISI) was 35.1. Hurricane Ian was very similar in size and intensity to Hurricane Harvey from 2017 and Hurricane Delta from 2020. Hurricane Ian was capable of causing regional major damage.

Hurricane Ian is not likely to spend enough time over western Cuba for Ian to weaken significantly. After the core of Hurricane Ian moves north of Cuba, Ian will move through an environment very favorable for intensification during the next 18 hours. Ian will move over water where the Sea Surface Temperatures are near 30˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Ian is likely to intensify to Category 4 on the Saffir-Simpson Scale by Wednesday. An upper level trough over the eastern U.S. will produce southwesterly winds that will blow toward the top of Ian’s circulation on Wednesday. Those winds will cause the vertical wind shear to increase. Hurricane Ian is likely to start to weaken slowly when the vertical wind shear increases.

Hurricane Ian will move around the western end of a high pressure system over the western Atlantic Ocean. The high pressure system will steer Ian toward the north during the next 18 hours. The upper level trough will steer Hurricane Ian more toward the north-northeast on Wednesday. On its anticipated track Hurricane Ian will move away from western Cuba. Weather conditions should gradually improve over western Cuba as Ian moves farther away. Hurricane Ian will be south-southwest of Tampa, Florida on Wednesday morning. The winds steering Ian could weaken later on Wednesday. Hurricane Ian could make landfall just south of Tampa, Florida on Wednesday evening. Ian could move very slowly inland over Central Florida on Thursday.

Hurricane Ian is likely to bring a prolonged period of strong gusty winds to the area around Tampa and St. Petersburg and to Central Florida. Ian will be capable of causing major damage. A prolonged period of strong winds could cause widespread electricity outages. Hurricane Ian will move slowly inland and 10 to 20 inches of rain could fall in some locations. Extensive fresh water flooding could occur in Central Florida. A storm surge of 5 to 10 feet (1.5 to 3 meters) could occur in parts of Tampa Bay. Storm surges will also occur along the coast of Southwest Florida.

Hurricane Ian Rapidly Intensifies to Cat. 2

Hurricane Ian rapidly intensified to Category 2 on the Saffir-Simpson Scale south of Cuba on Monday afternoon. At 5:00 p.m. EDT on Monday the center of Hurricane Ian was located at latitude 20.3°N and longitude 83.2°W which put it about 155 miles (250 km) southeast of the western tip of Cuba. Ian was moving toward the north-northwest at 13 m.p.h. (20 km/h). The maximum sustained wind speed was 100 m.p.h. (160 km/h) and there were wind gusts to 120 m.p.h. (195 km/h). The minimum surface pressure was 972 mb.

A Hurricane Warning was in effect for the portion of the coast from Englewood to Anclote River, Florida. The Hurricane Warning included Tampa Bay. Hurricane Warnings were in effect for the Cuban provinces of Isla Juventud, Pinar del Rio and Artemisa. Hurricane Watches were in effect for the portion of the coast from Anclote River to Suwannee River, Florida and from Englewood to Bonita Beach, Florida. Tropical Storm Warnings were in effect for the Lower Florida Keys from Seven Mile Bridge to Key West including the Dry Tortugas. A Tropical Storm Warning was in effect for the portion of the coast from Flamingo to Englewood, Florida. Tropical Storm Warnings were also in effect for the Cuban provinces of La Habana, Mayabeque and Matanzas. A Tropical Storm Watch was in effect for the Florida Keys from Seven Mile Bridge to Channel 5 Bridge. A Tropical Storm Watch was in effect for the portion of the coast from Suwannee River to Indian Pass, Florida. A Tropical Storm Watch was in effect for the portion of the coast from Jupiter Inlet, Florida to Altamaha Sound, Georgia. A Tropical Storm Watch was in effect for Lake Okeechobee.

Hurricane Ian rapidly intensified to Category 2 over the northwestern Caribbean Sea south of Cuba on Monday afternoon. A circular eye with a diameter of 13 miles (20 km) formed at the center of Ian’s circulation. The eye was surrounded by a nearly complete ring of thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the core of Hurricane Ian. Storms near the core generated upper level divergence that pumped mass away form the hurricane in all directions. The removal of large quantities of mass was allowing the surface pressure to decrease rapidly.

The circulation around Hurricane Ian got bigger on Monday afternoon as Ian got stronger. Winds to hurricane force extended out 35 miles (55 km) from the center of Ian’s circulation. Winds to tropical storm force extended out 115 miles (185 km) from the center of circulation. The Hurricane Intensity Index (HII) was 16.5 The Hurricane Size Index (HSI) was 9.6 and the Hurricane Wind Intensity Size Index (HWISI) was 26.1. Hurricane Ian was capable of causing regional serious damage.

Hurricane Ian will move through an environment very favorable for intensification during the next 24 hours. Ian will move over water where the Sea Surface Temperatures are near 30˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Ian is likely to intensify rapidly during the next 24 hours. Ian is likely to intensify to a major hurricane during the next 18 hours. Hurricane Ian could intensify to Category 4 on the Saffir-Simpson Scale by Wednesday.

Hurricane Ian will move around the western end of a high pressure system over the western Atlantic Ocean. The high pressure system will steer Ian toward the north-northwest during the next 12 hours. Ian will move toward the north when it reaches the western end of the high pressure system. On its anticipated track the center of Hurricane Ian will be near western Cuba on Tuesday morning. Hurricane Ian could be a major hurricane when it approaches western Cuba. Ian will be southwest of Tampa, Florida on Wednesday afternoon.

Hurricane Ian will bring strong winds and locally heavy rain to western Cuba. Ian will be capable of causing regional major damage in western Cuba. Widespread outages of electricity are likely. Heavy rain could cause flash floods in some locations.

The steering currents could weaken on Wednesday. If the steering currents weaken, the center of Hurricane Ian could stall just west or northwest of the area around Tampa and St. Petersburg. The strongest winds will be in the eastern side of Ian’s circulation. The area around Tampa and St. Petersburg could experience a prolonged period of strong winds. When the center of Ian is west of Tampa, the winds will blow from the south in the area around Tampa. Southerly winds will push water into Tampa Bay and a storm surge of 5 to 10 feet (1.5 to 3.0 meters) is possible. If Hurricane Ian stalls, some locations in west central Florida could receive 10 to 20 inches (250 to 500 mm) of rain. Heavy rain is likely to cause fresh water flooding.