Tag Archives: Bermuda

Tammy Makes Transition to Strong Extratropical Cyclone

Former Hurricane Tammy made a transition to a strong extratropical cyclone on Wednesday night. At 5:00 a.m. EDT on Thursday the center of former Hurricane Tammy was located at latitude 30.5°N and longitude 58.4°W which put it about 395 miles (640 km) east-southeast of Bermuda. Tammy was moving toward the north 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 973 mb.

Former Hurricane Tammy made a transition to a strong extratropical cyclone over the Atlantic Ocean east-southeast of Bermuda on Wednesday night. The lower part of Tammy’s circulation merged with a frontal system east of Bermuda. Tammy looked like an occluded extratropical cyclone on satellite images. An occluded front wrapped around the northern part of former Hurricane Tammy. A warm front stretched east of the occluded front. A cold front curved south to the Northern Leeward Islands. The upper part of Tammy’s circulation was captured by an upper level trough near Bermuda.

Former Hurricane Tammy was still producing winds to hurricane force. Winds to hurricane force extended out 30 miles (50 km) from the center of Tammy’s circulation. Winds to tropical storm force extended out 200 miles (320 km) from the center of circulation.

Former Hurricane Tammy is forecast to meander over the Atlantic Ocean east of Bermuda during the next few days. The upper level trough near Bermuda is between an upper level ridge over the southeastern U.S. and a second upper level ridge over the eastern Atlantic Ocean. The two ridges will keep the upper level trough from moving much. Since the upper level trough captured former Hurricane Tammy, Tammy is not likely to move much either.

There is a possibility that former Hurricane Tammy could make a transition back to a tropical cyclone during the next few days. Tammy will meander over water where the Sea Surface Temperatures are near 26°C. The vertical wind shear will decrease if the upper level trough weakens. If more thunderstorms form near the center of Tammy’s circulation and the fronts dissipate over time, then Tammy could make a transition back to a tropical cyclone.

Former Hurricane Tammy could bring gusty winds to Bermuda during the next few days. The western part of Tammy’s circulation could extend over Bermuda at times as Tammy meanders east of Bermuda.

Hurricane Tammy Spins Southeast of Bermuda

Hurricane Tammy was spinning southeast of Bermuda on Tuesday evening. At 11:00 p.m. EDT on Tuesday the center of Hurricane Tammy was located at latitude 24.9°N and longitude 60.7°W which put it about 570 miles (915 km) southeast of Bermuda. Tammy was moving toward the northeast at 9 m.p.h. (15 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 976 mb.

Hurricane Tammy started to intensify again on Tuesday evening. A small circular eye was at the center of Tammy’s circulation. 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 Hurricane Tammy. Storms near the core generated upper level divergence that pumped mass away to the northeast of the hurricane.

Winds to hurricane force extended out 25 miles (40 km) in the eastern side of Hurricane Tammy. Winds to tropical storm force extended out 170 miles (275 km) in the eastern side of Tammy’s circulation. Winds to tropical storm force extended out 90 miles (145 km) in the western half of Hurricane Tammy.

Hurricane Tammy will move through an environment favorable for intensification during the next 24 hours. Tammy will move over water where the Sea Surface Temperatures are near 27°C. It will move under the eastern side of an upper level trough that is east of the U.S. The upper level trough will produce southwesterly winds that will blow toward the top of Tammy’s circulation. Those winds will cause some vertical wind shear, but the wind shear is not likely to be strong enough to prevent intensification. Hurricane Tammy is likely to intensify on Wednesday.

The upper level trough east of the U.S. will steer Hurricane Tammy toward the northeast during the next 24 hours. On its anticipated track, Hurricane Tammy will remain southeast of Bermuda on Wednesday.

Tropical Depression Forms Near Nicaragua

Tropical Depression Twentyone formed over the southwest Caribbean Sea near Nicaragua on Monday afternoon. At 5:00 p.m. EDT on Monday the center of Tropical Depression Twentyone was located at latitude 11.6°N and longitude 83.5°W which put it about 35 miles (55 km) southeast of Bluefields, Nicaragua. The tropical depression was moving toward the west at 5 m.p.h. (8 km/h). The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h). The minimum surface pressure was 1007 mb.

A low pressure system over the southwest Caribbean Sea near Nicaragua strengthened on Monday afternoon and the U.S. National Hurricane Center designated the system as Tropical Depression Twentyone. More thunderstorms formed near the center of the tropical depression on Monday afternoon. Several short bands of showers and thunderstorms were revolving around the center of circulation. Storms near the center generated upper level divergence that pumped mass away from the tropical depression.

Tropical Depression Twentyone will move around the southern side of a high pressure system over the Gulf of Mexico. The high pressure system will steer the tropical depression toward the west during the next 24 hours. On its anticipated track, Tropical Depression Twentyone will move inland over southeast Nicaragua in a few hours. The tropical depression could drop heavy rain over parts of Nicaragua. Heavy rain could cause flash floods in some locations.

Elsewhere, Hurricane Tammy moved farther north of the Leeward Islands. At 5:00 p.m. EDT on Monday the center of Hurricane Tammy was located at latitude 22.3°N and longitude 63.8°W which put it about 695 miles (1115 km) south of Bermuda. Tammy was moving toward the north-northeast at 7 m.p.h. (11 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 990 mb.

Tropical Storm Philippe Brings Gusty Winds to Bermuda

Tropical Storm Philippe brought gusty winds to Bermuda on Friday morning. At 11:00 a.m. EDT on Friday the center of Tropical Storm Philippe was located at latitude 30.7°N and longitude 64.6°W which put it about 110 miles (185 km) south of Bermuda. Philippe was moving toward the north-northeast at 16 m.p.h. (26 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.

The circulation around Tropical Storm Philippe brought gusty winds to Bermuda on Friday morning. A weather station at L.F. Wade International Airport (TXKF) reported a sustained wind speed of 30 m.p.h. (50 km/h) and a gust of 56 m.p.h. (91 km/h). A weather station at an elevated location near the Bermuda National Museum reported a sustained wind speed of 46 m.p.h. (74 km/h) and a wind gust of 57 m.p.h. (91 km/h). Philippe produce intermittent rain showers in Bermuda, but the heaviest rain passed to the east of Bermuda.

Tropical Storm Philippe made a transition to an extratropical cyclone on Friday morning. The circulation former Tropical Storm Philippe combined with a frontal system near Bermuda. A warm front extended to the east of the center of circulation and a cold front trailed south of the center. Winds to tropical storm force extended out 175 miles (280 km) in the eastern side of former Tropical Storm Philippe. The winds in the western side of the extratropical cyclone were blowing at less than tropical storm force.

Former Tropical Storm Philippe will move between a high pressure system over the Atlantic Ocean and an upper level trough over the Great Lakes. The high pressure system and the upper level trough will steer the extratropical cyclone toward the north during the next 48 hours. On its anticipated track, former Tropical Storm Philippe will affect the Northeast U.S. and the Canadian Maritimes during the weekend. The extratropical cyclone could produce locally heavy rain in some places. Heavy rain could cause flash floods in some locations. Gusty winds could knock down trees and localized outages of electricity are possible.

Philippe Prompts Tropical Storm Warning for Bermuda

The potential effects of Tropical Storm Philippe prompted Bermuda to issue a Tropical Storm Warning. At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Philippe was located at latitude 22.6°N and longitude 65.9°W which put it about 675 miles (1085 km) south of Bermuda. Philippe was moving toward the north at 12 m.p.h. (19 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 1004 mb.

A Tropical Storm Warning was in effect for Bermuda.

Tropical Storm Philippe weakened a little more on Wednesday. An upper level trough east of Florida produced strong southwesterly winds that blew across the top of Philippe’s circulation. Those winds caused strong vertical wind shear. The strong upper level winds also blew the tops off of many of the thunderstorms in Tropical Storm Philippe. A few thunderstorms were able to develop in the southeastern quadrant of Philippe’s circulation. However, most of the bands revolving around the center of Philippe’s circulation consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 200 miles (320 km) in the eastern side of Philippe’s circulation. The winds in the western side of Tropical Storm Philippe were blowing at less than tropical storm force.

Tropical Storm Philippe will move through a region that will be unfavorable for intensification during the next 24 hours. Philippe will move over water where the Sea Surface Temperatures are near 29°C. However, the upper level trough east of Florida will continue to cause strong vertical wind shear. The strong wind shear will prevent Tropical Storm Philippe from intensifying during the next 24 hours.

Tropical Storm Philippe will move around the western part of a high pressure system over the Atlantic Ocean. The high pressure system will steer Philippe toward the north during the next 24 hours. On its anticipated track, Tropical Storm Philippe will move closer to Bermuda. Philippe could reach Bermuda on Friday.

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 Lee Causes Gusty Winds in Bermuda

Hurricane Lee caused gusty winds in Bermuda on Thursday. At 11:00 p.m. EDT on Thursday the center of Hurricane Lee was located at latitude 32.9°N and longitude 67.6°W which put it about 170 miles (275 km) west-northwest of Bermuda. Lee was moving toward the north at 14 m.p.h. (22 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 957 mb.

A Hurricane Watch was in effect for the portion of the coast from Stonington, Maine to the U.S./Canada border. A Hurricane Watch was also in effect for the portion of the coast from the U.S./Canada border to Point Lepreau, New Brunswick. That Hurricane Watch included Grand Manan Island. A Hurricane Watch was in effect for the portion of the coast from Digby to Medway Harbour, Nova Scotia.

A Tropical Storm Warning was in effect for Bermuda. A Tropical Storm Warning was in effect for the portion of the coast from Westport, Massachusetts to the U.S. Canada border. That Tropical Storm Warning included Martha’s Vineyard and Nantucket. A Tropical Storm Warning was in effect for the portion of the coast from the U.S./Canada border to Fort Lawrence, New Brunswick. That Tropical Storm Warning included Grand Manan Island. A Tropical Storm Warning was in effect for the portion of the coast from Fort Lawrence, New Brunswick to Point Tupper, Nova Scotia.

The circulation around the eastern side of Hurricane Lee was producing gusty winds in Bermuda on Thursday night. A weather station at the L.F. Wade International Airport (TXKF) reported a sustained wind speed of 43 m.p.h. (69 km/h) and a wind gust of 62 m.p.h. (100 km/h). The center of Hurricane Lee passed about 75 miles (120 km) east of NOAA buoy 41048 earlier in Thursday. The buoy reported a sustained wind speed of 65 m.p.h. (105 km/h) and a wind gust of 92 m.p.h. (148 km/h).

Hurricane Lee was beginning to exhibit the typical structure of a hurricane moving northward off the east coast of the U.S. There was no longer a well formed eye at the center of Lee’s circulation. Drier air was being pulled around the southern side of Hurricane Lee. An upper level trough over the eastern U.S. was producing southwesterly winds that were blowing toward the top of Lee’s circulation. Those winds were causing moderate vertical wind shear. The effects of the drier air and the vertical wind shear were causing an asymmetrical distribution of thunderstorms in Hurricane Lee. Most of the thunderstorms were occurring in bands in the northern and western sides of Lee’s circulation, Bands in the eastern and southern sides of the circulation consisted primarily of showers and lower clouds.

The changes to the structure of Hurricane Lee produced a large area of tropical storm force winds. Winds to hurricane force extended out 105 miles (165 km) from the center of Lee’s circulation. Winds to tropical storm force extended out 345 miles (555 km) from the center of circulation. The Hurricane Intensity Index (HII) was 12.7. The Hurricane Size Index (HSI) was 37.6 and the Hurricane Wind Intensity Size Index (HWISI) was 50.3. Hurricane Lee was about three-fourths as large as Hurricane Sandy was in 2012.

Hurricane Lee will move through an environment that will be unfavorable for intensification of a hurricane during the next 24 hours. Lee will move over water where the Sea Surface Temperatures are near 27°C. The upper level trough over the eastern U.S. will continue to will cause moderate vertical wind shear. The circulation around Lee will also pull in more drier air. The combination of moderate vertical wind shear and the drier air will cause Hurricane Lee to weaken gradually during the next 24 hours. The combination of vertical wind shear and drier air will also cause Hurricane Lee to make a gradual transition to an extratropical cyclone during the next 48 hours.

Hurricane Lee will move around the western part of a subtropical high pressure system over the Atlantic Ocean. The high pressure system and the upper level trough over the eastern U.S. will steer Lee toward the north during the next 24 hours. On its anticipated track, the center of Hurricane Lee will be southeast of Cape Cod by Friday night. Lee will affect Maine, New Brunswick and Nova Scotia later on Saturday. Hurricane Lee could be in the middle of a transition to an extratropical cyclone on Saturday. Lee will bring strong, gusty winds and locally heavy rain to the coast of the Northeast U.S. and Nova Scotia. Heavy rain could cause flash floods in come locations. The winds blowing around the northern side of Hurricane Lee will push water toward the coast. The water level could rise as much as four feet (one meter) along parts of the coast.

Elsewhere over the Atlantic Ocean, Hurricane Margot was churning west of the Azores. At 11:00 p.m. EDT on Thursday the center of Hurricane Margot was located at latitude 36.9°N and longitude 38.9°W which put it about 655 miles (1055 km) west of the Azores. Margot was moving toward the east-northeast at 3 m.p.h. (5 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 982 mb.

Hurricane Lee Prompts Watches for Northeast U.S.

The risk posed by Hurricane Lee prompted the issuance of a Hurricane Watch and a Tropical Storm Watch for a portion of the Northeast U.S. on Wednesday afternoon. At 5:00 p.m. EDT on Wednesday the center of Hurricane Lee was located at latitude 27.4°N and longitude 67.6°W which put it about 380 miles (610 km) south-southwest of Bermuda. Lee was moving toward the north-northwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h). The minimum surface pressure was 952 mb.

A Hurricane Watch was in effect for the portion of the coast from Stonington, Maine to the U.S./Canada border. A Tropical Storm Warning was in effect for Bermuda. A Tropical Storm Watch was in effect for the portion of the coast from Watch Hill, Rhode Island to Stonington, Maine. The Tropical Storm Watch included Block Island, Martha’s Vineyard and Nantucket.

Hurricane Lee weakened a little on Wednesday, but Lee remained a large and powerful hurricane. A circular eye with a diameter of 36 miles (50 km) was at the center of Lee’s circulation. 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 center of Hurricane Lee. Storms near the center of Lee’s circulation generated upper level divergence that pumped mass away from the hurricane.

Hurricane Lee was still a very large hurricane. Winds to hurricane force extended out 115 miles (185 km) from the center of Lee’s circulation. Winds to tropical storm force extended out 265 miles (425 km) from the center of circulation. The Hurricane Intensity Index (HII) was 17.8. The Hurricane Size Index (HSI) was 28.2 and the Hurricane Wind Intensity Size Index (HWISI) was 46.0. Hurricane Lee was similar in size and intensity to Hurricane Frances when Frances hit Southeast Florida in 2004.

Hurricane Lee will move through an environment that will become more unfavorable for a major hurricane during the next 24 hours. Lee will move over water where the Sea Surface Temperatures are near 28°C. An upper level trough over the eastern U.S. will produce southwesterly winds that will blow toward the top of Lee’s circulation. Those winds will cause the vertical wind shear to increase on Thursday. Hurricane Lee will move over cooler water later on Thursday. The combination of more vertical wind shear and cooler water will cause Hurricane Lee to weaken gradually during the next 24 hours.

Hurricane Lee will move around the western part of a subtropical high pressure system over the Atlantic Ocean. The high pressure system will steer Lee toward the north during the next 24 hours. On its anticipated track, the center of Hurricane Lee will pass west of Bermuda on Thursday evening. Bands in the eastern side of Lee’s circulation will bring gusty winds and locally heavy rain to Bermuda on Thursday.

Hurricane Lee could be east of Cape Cod by Saturday morning. Lee will affect Maine and Nova Scotia later on Saturday. Hurricane Lee could be in the middle of a transition to an extratropical cyclone on Saturday. Lee will bring strong, gusty winds and locally heavy rain to the coast of the Northeast U.S. and Nova Scotia. Heavy rain could cause flash floods in come locations. The winds blowing around the northern side of Hurricane Lee will push water toward the coast. A Storm Surge Watch has been issued for Cape Cod Bay and Nantucket, Massachusetts.

Elsewhere over the Atlantic Ocean, Hurricane Margot was spinning over the Central Atlantic. At 5:00 p.m. EDT on Wednesday the center of Hurricane Margot was located at latitude 34.7°N and longitude 40.6°W which put it about 790 miles (1270 km) west-southwest of the Azores. Margot was moving toward the north at 7 m.p.h. (11 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 971 mb.