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Low Pressure System Prompts Tropical Storm Warnings for Mid-Atlantic Coast

A low pressure system formed over the Atlantic Ocean off the coast of the southeast U.S. on Thursday morning. The U.S. National Hurricane Center designated the low pressure system as Potential Tropical Cyclone Sixteen and issued Tropical Storm Warnings for portions of the Mid-Atlantic coast. At 2:00 p.m. EDT on Thursday the center of Potential Tropical Cyclone Sixteen was located at latitude 29.0°N and longitude 75.9°W which put it about 430 miles (690 km) south of Cape Hatteras, North Carolina. Potential Tropical Cyclone Sixteen was moving toward the north at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1012 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Cape Fear, North Carolina to Fenwick Island, Delaware. The Tropical Storm Warning included Albemarle Sound and Pamlico Sound. A Tropical Storm Warning was also in effect for Chesapeake Bay south of Smith Point.

A low pressure system formed over the Atlantic Ocean off the coast of the southeast U.S. on Thursday morning. The low pressure system formed as an extratropical cyclone. There was a large counterclockwise circulation around the low pressure system. There was not a well formed, distinct low level center of the circulation. Thunderstorms were occurring in a band that wrapped around the eastern and northern side of the low pressure systems. Fragmented bands in other parts of the circulation consisted primarily of showers and lower clouds.

Potential Tropical Cyclone Sixteen will move through an environment favorable for intensification of an extratropical cyclone during the next 24 hours. The low pressure system will move over water where the Sea Surface Temperatures are near 28°C. It will move under the eastern side of an upper level trough over the eastern U.S. The upper level trough will produce southwesterly winds that will blow across the top of Potential Tropical Cyclone Sixteen. Those winds will cause moderate vertical wind shear. However, the flow of air in the upper levels will also provide divergence aloft that will pump mass away from the surface low pressure system. The removal of mass will cause the surface pressure to decrease. Potential Tropical Cyclone Sixteen is likely to intensify during the next 24 hours. The low pressure system could make a transition to a tropical storm later on Friday when it moves over the warmer water in the Gulf Stream.

The upper level trough over the eastern U.S. will steer Potential Tropical Cyclone Sixteen toward the north during the next 24 hours. On its anticipated track Potential Tropical Cyclone will approach the coast of North Carolina on Friday night. The low pressure system will bring gusty winds and locally heavy rain to eastern North Carolina, eastern Virginia, southeastern Maryland and southern Delaware. The gusty winds will blow water toward the coast. A storm surge of up to 5 feet (1.5 meters) could occur in some locations. Large waves will cause significant beach erosion. Locally heavy rain could cause flash floods in some locations.

Elsewhere over the Atlantic Ocean, Hurricane Nigel was speeding toward the northeast as it passed southeast of Newfoundland. At 11:00 a.m. EDT on Thursday the center of Hurricane Nigel was located at latitude 42.2°N and longitude 45.0°W which put it about 505 miles (815 km) southeast of Cape Race,, Newfoundland. Nigel was moving toward the northeast at 30 m.p.h. (48 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 977 mb.

Hurricane Nigel Moves North

Hurricane Nigel moved toward the north of the central Atlantic Ocean on Wednesday. At 5:00 p.m. EDT on Wednesday the center of Hurricane Nigel was located at latitude 37.4°N and longitude 53.0°W which put it about 755 miles (1215 km) east-northeast of Bermuda. Nigel was moving toward the north-northeast at 18 m.p.h. (30 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 105 m.p.h. (165 km/h). The minimum surface pressure was 973 mb.

A large, circular eye with a diameter of 70 miles (110 km) was at the center of Hurricane Nigel on Wednesday afternoon. The eye was surrounded by a broken ring of thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the large core of Nigel’s circulation. Storms near the core generated upper level divergence that pumped mass away to the north of the hurricane. Winds to hurricane force extended out 60 miles (95 km) from the center of Nigel’s circulation. Winds to tropical storm force extended out 160 miles (260 km) from the center of circulation.

Hurricane Nigel will move through an environment that will be unfavorable for intensification during the next 24 hours. Nigel will move over water where the Sea Surface Temperatures are cooler than 26°C. An upper level trough over the East Coast of the U.S. will produce southwesterly winds that will blow toward the top of Nigel’s circulation. Those winds will cause the vertical wind shear to increase. More wind shear and cooler water will cause Hurricane Nigel to weaken on Thursday. The vertical wind shear and cooler water will also cause Hurricane Nigel to start a transition to a strong extratropical cyclone.

The upper level trough over the East Coast of the U.S. will steer Hurricane Nigel toward the northeast during the next 24 hours. On its anticipated track, NIgel will pass far to the southeast of Newfoundland.

Hurricane Nigel Strengthens East of Bermuda

Hurricane Nigel strengthened over the Atlantic Ocean east of Bermuda on Tuesday afternoon. At 5:00 p.m. EDT on Tuesday the center of Hurricane Nigel was located at latitude 31.8°N and longitude 54.7°W which put it about 590 miles (955 km) east of Bermuda. Nigel was moving toward the north-northwest at 14 m.p.h. (22 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 974 mb.

A large, circular eye with a diameter of 60 miles (95 km) was at the center of Hurricane Nigel on Tuesday afternoon. 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 Nigel’s circulation. Storms near the core generated upper level divergence that pumped mass away to the north of the hurricane. Winds to hurricane force extended out 60 miles (95 km) from the center of Nigel’s circulation. Winds to tropical storm force extended out 175 miles (280 km) from the center of circulation.

Hurricane Nigel will move through an environment somewhat favorable for intensification during the next 24 hours. Nigel will move over water where the Sea Surface Temperatures are near 27°C. It will move under the western part of an upper level ridge over the central Atlantic Ocean. The upper level ridge will produce southerly winds that will blow toward the top of Nigel’s circulation. Those winds will cause some vertical wind shear and the shear will inhibit intensification. Tropical Storm Nigel could strengthen on Wednesday. An upper level trough over the eastern U.S. will produce southwesterly winds that will blow toward the top of Nigel’s circulation later this week. Those winds will cause the vertical wind shear to increase. More wind shear will cause Hurricane Nigel to weaken later this week.

Hurricane Nigel will move around the western part of a high pressure system over the eastern Atlantic Ocean. The high pressure system will steer Nigel toward the north during the next 24 hours. On its anticipated track, Hurricane Nigel will stay far east of Bermuda. The upper level trough over the eastern U.S. will steer Nigel toward the northeast later this week.

Nigel Strengthens to a Hurricane

Former Tropical Storm Nigel strengthened to a hurricane over the Central Atlantic Ocean on Monday. At 5:00 a.m. EDT on Monday the center of Hurricane Nigel was located at latitude 26.5°N and longitude 50.7°W which put it about 935 miles (1510 km) east-southeast of Bermuda. Nigel was moving toward the northwest at 12 m.p.h. (19 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. (150 km/h). The minimum surface pressure was 984 mb.

The circulation around Hurricane Nigel exhibited more organization on Monday morning. The inner end of a rainband wrapped around the center of Nigel’s circulation. A broken ring of thunderstorms surrounded the center of circulation and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the center of Hurricane Nigel. Storms near the center generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 25 miles (40 km) from the center of Nigel’s circulation. Winds to tropical storm force extended out 160 miles (260 km) from the center.

Hurricane Nigel will move through an environment favorable for intensification during the next 36 hours. Nigel will move over water where the Sea Surface Temperatures are near 29°C. It will move under the axis of an upper level ridge over the Central Atlantic Ocean. The upper level winds are weak near the axis of the upper level ridge and there will be little vertical wind shear. Hurricane Nigel will intensify during the next 36 hours. Nigel could intensify rapidly at times. Nigel could strengthen to a major hurricane on Tuesday.

Hurricane Nigel will move around the southwestern part of a high pressure system over the eastern Atlantic Ocean. The high pressure system will steer Nigel toward the northwest during the next 36 hours. On its anticipated track, Hurricane Nigel will remain over the Central Atlantic Ocean during the early part of this week.

Hurricane Lisa Hits Belize

Hurricane Lisa hit the coast of Belize late on Wednesday afternoon. At 5:00 p.m. EDT on Wednesday the center of Hurricane Lisa was located at latitude 17.4°N and longitude 88.2°W which put it about 5 miles (10 km) south of Belize City, Belize. Lisa was moving toward the west at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 990 mb.

Hurricane Warnings were in effect for Belize, and for the portion of the coast from Chetumal to Puerto Costa Maya, Mexico. Tropical Storm Warnings were in effect for the North Coast of Guatemala and the portion of the coast from Chetumal to Punta Allen, Mexico.

Hurricane Lisa intensified steadily until it made landfall on the coast of Belize late on Wednesday afternoon. Winds to hurricane force extended out 20 miles (30 km) from the center of Lisa in the northern side of Lisa. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.

Hurricane Lisa will move south of a high pressure system over the Gulf of Mexico. The high pressure system will steer Lisa toward the west-northwest during the next 36 hours. On its anticipated track, Hurricane Lisa will move inland over Belize on Wednesday evening. Lisa will bring strong winds and heavy rain to Belize. The strongest winds are north of the center of Hurricane Lisa. Lisa could bring strong winds to Belize City during the next several hours. Hurricane Lisa will also cause a storm surge of up to 8 feet (2.5 meters) along the coast of Belize. Lisa will weaken steadily as it moves farther inland. The center of Lisa will move over northern Guatemala during Wednesday night. Lisa could reach the Bay of Campeche as a tropical depression on Thursday night. Hurricane Lisa will drop heavy rain over Belize, northern Guatemala and southeastern Mexico. Heavy rain could cause flash floods in some locations.

Elsewhere over the Atlantic Ocean, former Tropical Storm Martin intensified to a hurricane south of Newfoundland. At 5:00 p.m. EDT on Wednesday the center of Hurricane Martin was located at latitude 37.1°N and longitude 47.6°W which put it about 720 miles (1160 km) south-southeast of Cape Race, Newfoundland. Martin was moving toward the northeast at 31 m.p.h. (50 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 974 mb.

Lisa Intensifies to a Hurricane North of Honduras

Former Tropical Storm Lisa intensified to a hurricane north of Honduras on Wednesday morning. At 8:00 a.m. EDT on Wednesday the center of Hurricane Lisa was located at latitude 17.2°N and longitude 84.7°W which put it about 100 miles (160 km) east-southeast of Belize City, Belize. Lisa was moving toward the west at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 988 mb.

Hurricane Warnings were in effect for Belize, the Bay Islands, Honduras, and for the portion of the coast from Chetumal to Puerto Costa Maya, Mexico. Tropical Storm Warnings were in effect for the entire North Coast of Honduras, the North Coast of Guatemala, and the portion of the coast from Chetumal to Punta Allen, Mexico.

A U.S. Air Force Reserve Hurricane Hunter plane found that former Tropical Storm Lisa had strengthened to a hurricane on Wednesday morning. The inner end of a rainband wrapped most of the way around the center of Hurricane Lisa. Other bands of showers and thunderstorms were revolving around the core of Lisa’s circulation. Storms near the core generated upper level divergence that pumped mass away from the hurricane. The circulation around Hurricane Lisa was small. Winds to tropical storm force extended out 70 miles from the center of Lisa.

Hurricane Lisa will move through an environment favorable for intensification during the next few hours. Lisa will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the axis of an upper level ridge over the Caribbean Sea. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Hurricane Lisa is likely to strengthen during the next few hours.

Hurricane Lisa will move south of a high pressure system over the Gulf of Mexico. The high pressure system will steer Lisa toward the west during the next 24 hours. On its anticipated track, Hurricane Lisa will make landfall on the coast of Belize in a few hours. Lisa will bring strong winds and heavy rain to Belize. Heavy rain could cause flash floods in some locations. Hurricane Lisa will also cause a storm surge of up to 8 feet (2.5 meters) along the coast of Belize.

Elsewhere over the Atlantic Ocean, Tropical Storm Martin intensified developed east-northeast of Bermuda. At 5:00 a.m. EDT on Wednesday the center of Tropical Storm Martin was located at latitude 35.3°N and longitude 52.1°W which put it about 755 miles (1220 km) east-northeast of Bermuda. Martin was moving toward the east-northeast at 15 m.p.h. (24 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 989 mb.

Tropical Storm Lisa Strengthens, Hurricane Warning Issued for Belize

Tropical Storm Lisa strengthened over the Northwest Caribbean Sea northeast of Honduras on Tuesday afternoon and a Hurricane Warning was issued for the entire coast of Belize. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Lisa was located at latitude 16.7°N and longitude 83.3°W which put it about 330 miles (530 km) east of Belize City, Belize. Lisa was moving toward the west at 15 m.p.h. (24 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 1000 mb.

Hurricane Warnings were in effect for Belize and the Bay Islands, Honduras. A Hurricane Watch was in effect for the portion of the coast from Chetumal to Puerto Costa Maya, Mexico. Tropical Storm Warnings were in effect for the entire North Coast of Honduras, the coast of Guatemala, and the portion of the coast from Chetumal to Punta Herrero, Mexico.

Tropical Storm Lisa strengthened on Tuesday. The inner end of a rainband wrapped around the center of Lisa’s circulation. Other bands of showers and thunderstorms were revolving around the core of Tropical Storm Lisa. Storms near the core generated upper level divergence that pumped mass away from the tropical storm. The circulation around Tropical Storm Lisa was small. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.

Tropical Storm Lisa will move through an environment favorable for intensification during the next 24 hours. Lisa will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the axis of an upper level ridge over the Caribbean Sea. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Tropical Storm Lisa is likely to strengthen to a hurricane during the next 12 hours. Lisa could intensify more rapidly after an inner core with an eye and an eyewall forms.

Tropical Storm Lisa will move south of a high pressure system over the Gulf of Mexico. The high pressure system will steer Lisa toward the west during the next 36 hours. On its anticipated track, the center of Tropical Storm Lisa will be north of Honduras on Tuesday night. Lisa will approach Belize on Wednesday afternoon. Tropical Storm Lisa will be a hurricane when it approaches Belize. Tropical Storm Lisa could bring gusty winds and locally heavy rain to the north coast of Honduras. Lisa will bring strong winds and heavy rain to Belize. Heavy rain could cause flash floods in some locations. Lisa will also cause a storm surge along the coast of Belize.

Elsewhere over the Atlantic Ocean, Tropical Storm Martin developed east-northeast of Bermuda. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Martin was located at latitude 35.4°N and longitude 54.5°W which put it about 630 miles (1010 km) east-northeast of Bermuda. Martin was moving toward the east at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h). The minimum surface pressure was 991 mb.

Tropical Storm Lisa Develops South of Jamaica

Tropical Storm Lisa developed over the Caribbean Sea south of Jamaica on Monday morning. At 11:00 a.m. EDT on Monday the center of Tropical Storm Lisa was located at latitude 15.5°N and longitude 77.3°W which put it about 175 miles (285 km) south of Kingston, Jamaica. It was moving toward the west at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1003 mb.

A Tropical Storm Watch was in effect for Jamaica.

The National Hurricane Center designated former Potential Tropical Cyclone Fifteen as Tropical Storm Lisa on Monday morning. The distribution of thunderstorms in Tropical Storm Lisa was still asymmetrical. Thunderstorms were occurring in bands in the eastern side of Lisa’s circulation. Bands in the western side of Tropical Storm Lisa consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 100 miles (160 km) in the eastern side of Lisa. The winds in the western side of the circulation were blowing at less than tropical storm force.

Tropical Storm Lisa will move through an environment favorable for intensification during the next 36 hours. Lisa will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the western part of an upper level ridge over the Caribbean Sea. The upper level ridge will produce southwesterly winds that will blow toward the top of Lisa’s circulation. Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification. Tropical Storm Lisa is likely to strengthen gradually during the next 36 hours.

Tropical Storm Lisa will move south of a high pressure system over the western Atlantic Ocean. The high pressure system will steer Potential Tropical Cyclone Fifteen toward the west during the next 36 hours. On its anticipated track, the center of Tropical Storm Lisa could be north of Honduras by Tuesday night. Lisa could approach Belize on Wednesday afternoon. Tropical Storm Lisa could be a hurricane when it approaches Belize.

Low Pressure System over Caribbean Sea Prompts Tropical Storm Watches for Jamaica and Grand Cayman

A low pressure system over the central Caribbean Sea prompted the issuance of Tropical Storm Watches for Jamaica and Grand Cayman on Sunday afternoon. The National Hurricane Center designated the low pressure system as Potential Tropical Cyclone Fifteen. At 5:00 p.m. EDT on Sunday the center of Potential Tropical Tropical Cyclone Fifteen was located at latitude 15.7°N and longitude 73.6°W which put it about 265 miles (425 km) southeast of Kingston, Jamaica. It was moving toward the west-northwest at 10 m.p.h. (16 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1005 mb.

Tropical Storm Watches were issued for Jamaica and Grand Cayman.

Reconnaissance planes from the U.S. Air Force Reserve and NOAA found winds to tropical storm force in the northern side of a low pressure system over the central Caribbean Sea on Sunday. Based on data collected by the planes, the National Hurricane Center designated the low pressure system as Potential Tropical Cyclone Fifteen. There was a large counterclockwise rotation around the low pressure system. Several small counterclockwise swirls were revolving around the larger low pressure system. Winds to tropical storm force extended out 115 miles (185 km) in the northern side of Potential Tropical Cyclone Fifteen. The winds in the southern half of the low pressure system were blowing at less than tropical storm force.

Potential Tropical Cyclone Fifteen will move through an environment favorable for intensification during the next 36 hours. It will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the northwestern part of an upper level ridge over the eastern two thirds of the Caribbean Sea. The upper level ridge will produce southwesterly winds that will blow toward the top of Potential Tropical Cyclone Fifteen. Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification. Potential Tropical Cyclone Fifteen will be designated as a tropical storm if more thunderstorms form closer to the center of circulation. It could eventually strengthen to a hurricane later this week.

Potential Tropical Cyclone Fifteen will move south of a high pressure system over the western Atlantic Ocean. The high pressure system will steer Potential Tropical Cyclone Fifteen toward the west-northwest during the next 36 hours. On its anticipated track, the center of Potential Tropical Cyclone Fifteen will pass south of Jamaica on Monday. It will bring gusty winds and locally heavy rain to Jamaica. Heavy rain could cause flash floods in some locations.

Tropical Depression 16 Forms East of Northern Leeward Islands

Tropical Depression Sixteen formed east of the Northern Leeward Islands on Saturday night. At 11:00 p.m. EDT on Saturday the center of Tropical Depression Sixteen was located at latitude 16.4°N and longitude 53.1°W which put it about 670 miles (1080 km) east of the Northern Leeward Islands. The tropical depression was moving toward the west-northwest at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were’ wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1008 mb.

More thunderstorms developed near the center of a low pressure system east of the Northern Leeward Islands on Saturday night and the National Hurricane Center designated the system as Tropical Depression Sixteen. Thunderstorms were also developing in bands in the eastern and northern parts of the tropical depression. Bands in the southern and western parts of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the north of the tropical depression.

Tropical Depression Sixteen will move through an environment somewhat favorable for intensification during the next 24 hours. The depression will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the western part of an upper level ridge. The ridge will produce southerly winds that will blow toward the top of the tropical depression. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Tropical Depression Sixteen is likely to strengthen to a tropical storm on Sunday. The tropical depression will move closer to an upper level trough northeast of Puerto Rico on Monday. The upper level trough will produce strong southwesterly winds that will blow toward the top of the tropical depression. Those winds will cause moderate vertical wind shear, which is likely to weaken the tropical depression.

Tropical Depression Sixteen will move around the southern side of a subtropical high pressure system over the Atlantic Ocean. The high pressure system will steer the depression toward the west-northwest during the next 24 hours. On its anticipated track Tropical Depression Sixteen could be northeast of the Northern Leeward Islands by Monday morning.

Elsewhere over the Atlantic Ocean, Tropical Storm Odette made a transition to an extratropical cyclone south of Nova Scotia. At 5:00 p.m. EDT on Saturday the center of former Tropical Storm Odette was located at latitude 39.1°N and longitude 65.1°W which put it about 385 miles (625 km) south-southwest of Halifax, Nova Scotia. Odette was moving toward the east-northeast at 18 m.p.h. (29 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.