Tag Archives: Trinidad

Hurricane Beryl Batters the Grenadine Islands

Hurricane Beryl battered the Grenadine Islands on Monday.  At 12:00 p.m. EDT on Monday the center of Hurricane Beryl was located at latitude 12.5°N and longitude 61.5°W which put the center about 15 miles (25 km) west of Carriacou Island.  Beryl was moving toward the west-northwest at 20 m.p.h. (32 km/h).  The maximum sustained wind speed was 150 m.p.h. (240 km/h) and there were wind gusts to 180 m.p.h. (290 km/h).  The minimum surface pressure was 950 mb.

Hurricane Warnings were in effect for Barbados, Grenada, Tobago, and St. Vincent and the Grenadine Islands.

A Hurricane Watch was is in effect for Jamaica.

Tropical Storm Warnings were in effect for St. Lucia, Martinique and Trinidad.

A Tropical Storm Watch was in effect for the south coast of the Dominican Republic from Punta Palenque to the border with Haiti.  A Tropical Storm Watch was also in effect for the south coast of Haiti from Anse d’Hainault to the border with the Dominican Republic.

Hurricane Beryl intensified rapidly after it completed an Eyewall Replacement Cycle early on Monday.  A circular eye with a diameter of 23 miles (37 km) was present at the center of Beryl’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 Beryl.  Storms near the core generated strong upper level divergence that pumped mass away from the hurricane in all directions.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

Completion of the Eyewall Replacement Cycle caused the size of the circulation around Hurricane Beryl to increase.  Winds to hurricane force extended out 40 miles (65 km) from the center of Beryl’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Hurricane Beryl.

The Hurricane Intensity Index (HII) for Hurricane Beryl was 31.6.  The Hurricane Size Index (HSI) was 12.5 and the Hurricane Wind Intensity Size Index (HWISI) was 44.1.  Hurricane Beryl was similar in intensity and just a little smaller than Hurricane Ida was when Ida hit Louisiana in 2021.

Hurricane Beryl will move through an environment favorable for intensification during the next 24 hours.  Beryl will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over the tropical Atlantic Ocean and eastern Caribbean Sea.  The ridge will produce easterly winds that will blow toward the top of Beryl’s circulation.  The winds in the lower levels of the atmosphere are also blowing from the east and there will be little vertical wind shear.  Hurricane Beryl is likely to intensify during the next 24 hours unless another Eyewall Replacement Cycle occurs.  There is a chance that Hurricane Beryl could strengthen to a Category 5 hurricane on the Saffir-Simpson Scale.

Hurricane Beryl will move around the southern side of a high pressure system over the Atlantic Ocean.  The high pressure system will steer Beryl toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Beryl will move away from the Windward Islands during the next few hours.  Beryl will pass south of Puerto Rico on Tuesday.

The core of Hurricane Beryl is passing over the Grenadine Islands.  Beryl is capable of causing regional severe damage.  Widespread outages of electricity are likely.  Hurricane Beryl will also drop heavy rain.  Heavy rain is likely to cause flash floods in some locations.  Hurricane Beryl could cause a storm surge of up to 13 feet (4 meters) on the parts of islands where the wind blows the water toward the shore.

Hurricane Beryl will also bring strong winds and heavy rain in Grenada, St. Vincent, and St. Lucia, Tobago, and Martinique. Gusty winds and heavy rain could occur in Tobago and Martinique.  The wind speeds should diminish in Barbados and Trinidad as Hurricane Beryl moves farther away..

 

 

 

 

Hurricane Beryl Nears the Windward Islands

Hurricane Beryl neared the Windward Islands on Monday morning.  At 8:00 a.m. EDT on Monday the center of Hurricane Beryl was located at latitude 12.0°N and longitude 60.5°W which put the center about 70 miles (110 km) east of Grenada.  Beryl was moving toward the west-northwest at 20 m.p.h. (32 km/h).  The maximum sustained wind speed was 130 m.p.h. (210 km/h) and there were wind gusts to 160 m.p.h. (260 km/h).  The minimum surface pressure was 959 mb.

Hurricane Warnings were in effect for Barbados, Grenada, Tobago, and St. Vincent and the Grenadine Islands.

Tropical Storm Warnings were in effect for St. Lucia, Martinique and Trinidad.

A Tropical Storm Watch was in effect for the south coast of the Dominican Republic from Punta Palenque to the border with Haiti.  A Tropical Storm Watch was also in effect for the south coast of Haiti from Anse d’Hainault to the border with the Dominican Republic.

Hurricane Beryl quickly completed an Eyewall Replacement Cycle early on Monday.  Beryl began to intensify again after completion of the Eyewall Replacement Cycle.  A circular eye with a diameter of 17 miles (28 km) was present at the center of Hurricane Beryl.  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 Beryl.  Storms near the core generated strong upper level divergence that pumped mass away from the hurricane in all directions.  The removal of large amounts of mass caused the surface pressure to start to decrease again.

Completion of the Eyewall Replacement Cycle caused the size of the circulation around Hurricane Beryl to increase.  Winds to hurricane force extended out 35 miles (55 km) from the center of Beryl’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Hurricane Beryl.

The Hurricane Intensity Index (HII) for Hurricane Beryl was 25.1.  The Hurricane Size Index (HSI) was 11.8 and the Hurricane Wind Intensity Size Index (HWISI) was 36.9.  Hurricane Beryl was similar in size and intensity to Hurricane Harvey when Harvey hit Texas in 2017.

Hurricane Beryl will move through an environment favorable for intensification during the next 24 hours.  Beryl will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over the tropical Atlantic Ocean and eastern Caribbean Sea.  The ridge will produce easterly winds that will blow toward the top of Beryl’s circulation.  The winds in the lower levels of the atmosphere are also blowing from the east and there will be little vertical wind shear.  Hurricane Beryl is likely to intensify during the next 24 hours unless another Eyewall Replacement Cycle occurs.  There is a chance that Hurricane Beryl could strengthen to a Category 5 hurricane on the Saffir-Simpson Scale.

Hurricane Beryl will move around the southern side of a high pressure system over the Atlantic Ocean.  The high pressure system will steer Beryl toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Beryl will hit Grenada and St. Vincent and the Grenadine Islands in a few hours.

The core of Hurricane Beryl will pass very close to Grenada and St. Vincent and the Grenadine Islands in a few hours.  Beryl will be capable of causing regional severe damage.  Widespread outages of electricity are likely.  Hurricane Beryl will also drop heavy rain.  Heavy rain is likely to cause flash floods in some locations.  Hurricane Beryl could cause a storm surge of up to 13 feet (4 meters) on the parts of islands where the wind blows the water toward the shore.

Hurricane Beryl will also bring strong winds and heavy rain in St. Lucia, Tobago, and Martinique.  Gusty winds and heavy rain could occur in Barbados and Trinidad.

Elsewhere, former Tropical Storm Chris brought gusty winds and locally heavy rain to parts of Mexico.  At 8:00 a.m. EDT on Monday the center of Tropical Depression Chris was located at latitude 20.2°N and longitude 97.7°W which put the center about 60 miles (95 km) south-southwest of Tuxpan, Mexico.  Chris was moving toward the west at 12 m.p.h. (19 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 1007 mb.

Hurricane Beryl Approaches Windward Islands

Hurricane Beryl was approaching the Windward Islands on Sunday night.  At 11:00 p.m. EDT on Sunday the center of Hurricane Beryl was located at latitude 11.5°N and longitude 58.1°W which put the center about 150 miles (240 km) southeast of Barbados.   Beryl was moving toward the west-northwest at 20 m.p.h. (32 km/h).   The maximum sustained wind speed was 130 m.p.h. (210 km/h) and there were wind gusts to 160 m.p.h. (260 km/h).   The minimum surface pressure was 959 mb.

Hurricane Warnings were in effect for Barbados, St. Lucia, Grenada, Tobago, and St. Vincent and the Grenadine Islands.

Tropical Storm Warnings were in effect for Martinique and Trinidad.

A Tropical Storm Watch was in effect for Dominica.  A Tropical Storm Watch was in effect for the south coast of the Dominican Republic from Punta Palenque to the border with Haiti.  A Tropical Storm Watch was in effect for the south coast of Haiti from Anse d’Hainault to the border with the Dominican Republic.

A circular eye with a diameter of 12 miles (19 km) was present at the center of Hurricane Beryl.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  The inner end of a rainband was wrapping around the existing eye and eyewall.  Concentric eyewalls were likely forming.  Bands of showers and thunderstorms were revolving around the core of Hurricane Beryl.  Storms near the core generated strong upper level divergence that pumped mass away from the hurricane in all directions.  The removal of large amounts of mass was in equilibrium with the inflow of mass near the surface and the surface pressure was nearly steady.

The size of the circulation around Hurricane Beryl also remained nearly steady on Sunday evening.  Winds to hurricane force extended out 30 miles (50 km) from the center of Beryl’s circulation. Winds to tropical storm force extended out 115 miles (185 km) from the center of Hurricane Beryl.

The Hurricane Intensity Index (HII) for Hurricane Beryl was 25.1.  The Hurricane Size Index (HSI) was 10.5 and the Hurricane Wind Intensity Size Index (HWISI) was 35.6.  Hurricane Beryl was similar in size and intensity to Hurricane Harvey when Harvey hit Texas in 2017.

Hurricane Beryl will move through an environment favorable for intensification during the next 24 hours.  Beryl will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over the central tropical Atlantic Ocean.  The ridge will produce easterly winds that will blow toward the top of Beryl’s circulation.  The winds in the lower levels of the atmosphere are also blowing from the east and there will be little vertical wind shear.  Although Hurricane Beryl will move through an environment favorable for intensification, Beryl is likely to weaken during the next few hours.  Concentric eyewalls will likely lead to an Eyewall Replacement Cycle.  During an Eyewall Replacement Cycle the inner eyewall weakens and dissipates.  Since the maximum wind speeds occur in the inner eyewall, Hurricane Beryl will weaken, at least temporarily, when that happens.  Beryl could strengthen again after the Eyewall Replacement Cycle is over.

Hurricane Beryl will move around the southern side of a high pressure system over the Atlantic Ocean.  The high pressure system will steer Beryl toward the west-northwest during the next 24 hours.  On its anticipated track, the center of Hurricane Beryl will pass between Barbados and Tobago early on Monday.  Hurricane Beryl will begin to affect St. Lucia, Grenada, and St. Vincent and the Grenadine Islands later on Monday morning.

The core of Hurricane Beryl could pass very close to St. Lucia, Grenada and St. Vincent and the Grenadine Islands.  Beryl will be capable of causing regional severe damage.  Hurricane Beryl will also drop heavy rain.  Heavy rain is likely to cause flash floods in some locations.  Hurricane Beryl could cause a storm surge of up to 13 feet (4 meters) on the parts of islands where the wind blows the water toward the shore.

Hurricane Beryl will also produce strong winds and heavy rain in Barbados, Tobago, and Martinique.  Gusty winds and heavy rain could occur in Trinidad and Dominica.

Elsewhere, Tropical Storm Chris formed over the southwestern Gulf of Mexico near the coast of Mexico.  At 11:00 p.m. EDT on Sunday the center of Tropical Storm Chris was located at latitude 20.0°N and longitude 96.2°W which put the center about 105 miles (165 km) southeast of Tuxpan, Mexico.  Chris was moving toward the west at 13 m.p.h. (20 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.

A Tropical Storm Warning was in effect for the portion of the coast from Cabo Rojo to Puerto Veracruz, Mexico.

 

Hurricane Beryl Strengthens to Cat. 4

Hurricane Beryl strengthened to Category 4 on the Saffir-Simpson Scale on Sunday morning.  At 11:30 a.m. EDT on Sunday the center of Hurricane Beryl was located at latitude 10.8°N and longitude 54.9°W which put the center about 350 miles (565 km) east-southeast of Barbados.   Beryl was moving toward the west at 21 m.p.h. (33 km/h).   The maximum sustained wind speed was 130 m.p.h. (210 km/h) and there were wind gusts to 160 m.p.h. (260 km/h).   The minimum surface pressure was 962 mb.

Hurricane Warnings were in effect for Barbados, St. Lucia, Grenada, Tobago, and St. Vincent and the Grenadine Islands.

A Tropical Storm Warning was in effect for Martinique.

Tropical Storm Watches were in effect for Dominica and Trinidad.

A U.S. Air Force Reserve Hurricane Hunter aircraft found that Hurricane Beryl had rapidly intensified on Sunday morning to Category 4 on the Saffir-Simpson Scale.

A circular eye with a diameter of 18 miles (30 km) was present at the center of Beryl’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 Beryl.  Storms near the core generated strong upper level divergence that pumped mass away from the hurricane in all directions.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

The reconnaissance aircraft also found that the size of the circulation around Hurricane Beryl increased when Beryl rapidly intensified.  Winds to hurricane force extended out 30 miles (50 km) from the center of Beryl’s circulation.  Winds to tropical storm force extended out 115 miles (185 km) from the center of Hurricane Beryl.

Hurricane Beryl will move through an environment favorable for intensification during the next 24 hours.  Beryl will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over the central tropical Atlantic Ocean.  The ridge will produce easterly winds that will blow toward the top of Beryl’s circulation.  The winds in the lower levels of the atmosphere are also blowing from the east and there will be little vertical wind shear.  Hurricane Beryl is likely to continue to intensify during the next 24 hours.  Beryl could continue to intensify rapidly during the next few hours.  There is a chance Hurricane Beryl could strengthen to Category 5 on the Saffir-Simpson Scale.

Hurricane Beryl will move around the southern side of a high pressure system over the Atlantic Ocean.  The high pressure system will steer Beryl toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Beryl will move quickly toward the Windward Islands.  Beryl will approach Barbados and Tobago by Sunday night.  Hurricane Beryl will affect St. Lucia, Grenada, St. Vincent and the Grenadine Islands, and Martinique on Monday.

The core of Hurricane Beryl could pass very close to Grenada and St. Vincent and the Grenadine Islands.  Beryl will be capable of causing regional severe damage.  Hurricane Beryl will also drop heavy rain.  Heavy rain is likely to cause flash floods in some locations.  Hurricane Beryl could cause a storm surge of up to 13 feet (4 meters) on the parts of islands where the wind blows the water toward the shore.

Hurricane Beryl will also produce strong winds and heavy rain in Barbados, Tobago, St. Lucia and Martinique.  Gusty winds and heavy rain could occur in Trinidad and Dominica.

 

 

Tropical Storm Warnings Issued for Trinidad, Tobago and Grenada

Tropical Storm Warnings were issued for Trinidad, Tobago and Grenada on Monday afternoon. A tropical wave formerly designated as Invest 94L was redesignated as Potential Tropical Cyclone Two. At 5:00 p.m. EDT on Monday the center of Potential Tropical Cyclone Two was located at latitude 8.6°N and longitude 50.9°W which put it about 720 miles (1155 km) east of Trinidad. Potential Tropical Cyclone Two was moving toward the west-northwest at 18 m.p.h. (30 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1009 mb.

Tropical Storm Warnings were in effect for Trinidad and Tobago, and Grenada and its dependencies.

A NOAA aircraft investigated former Invest 94L on Monday afternoon. The plane was unable to find a distinct low level center of circulation, but it did find winds to tropical storm force. Since there was no distinct low level center of circulation, the system was still considered to be a tropical wave. There was a broad area of counterclockwise rotation. Winds to tropical storm force extended out 60 miles (95 km) in the northern side of Potential Tropical Cyclone Two. The winds in the southern side of the system were blowing at less than tropical storm force. There were mostly showers and lower clouds near the center of the broad rotation. Thunderstorms were occurring in the western and northern parts of the tropical wave. The southern and eastern parts of the wave contained showers and lower clouds.

The tropical wave will move south of a subtropical high pressure system over the Atlantic Ocean during the next few days. The high pressure system will steer the tropical wave toward the west. On its anticipated track Potential Tropical Cyclone Two will approach the Windward Islands on Tuesday night.

The tropical wave will move through an environment that is favorable for the development of a tropical cyclone during the next 36 hours. The wave will move over water where the Sea Surface Temperatures are near 28˚C. It will move through a region where the winds in the troposphere will blow from the east at most levels and there will be little vertical wind shear. The circulation around the tropical wave could gradually become more organized during the next few days. Potential Tropical Cyclone Two could become a tropical storm before it reaches Trinidad, Tobago and Grenada. Even if the system is still a tropical wave, it will bring gusty winds and locally heavy rain to the southern Windward Islands. Potential Tropical Cyclone Two could also bring gusty winds and locally heavy rain to the northern coast of Venezuela.

Hanna Strengthens to a Hurricane Near South Texas

Former Tropical Storm Hanna strengthened into a hurricane near the coast of South Texas on Saturday morning.  At 8:00 a.m. EDT on Saturday the center of Hurricane Hanna was located at latitude 27.1°N and longitude 96.0°W which put it about 100 miles (160 km) east-southeast of Corpus Christi, Texas.  Hanna was moving toward the west at 9 m.p.h. (15 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. (150 km/h).  The minimum surface pressure was 982 mb.

A Hurricane Warning was in effect for the portion of the coast from Port Mansfield to Mesquite Bay, Texas.  Tropical Storm Warnings were in effect for the portions of the coast from Barra de Mezquital, Mexico to Port Mansfield and from Mesquite Bay to High Island, Texas.

A NOAA aircraft detected winds to hurricane force in former Tropical Storm Hanna on Saturday morning and the National Hurricane Center upgraded Hanna to a hurricane.  The circulation around Hurricane Hanna was well organized.  A circular eye with a diameter of 25 miles (40 km) was at the center of 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 Hanna.  Storms near the core were generating upper level divergence which was pumping mass away from the hurricane.  Winds to hurricane force extended out 25 miles (40 km) from the center of circulation.  Winds to tropical storm force extended out 90 miles (150 km) from the center.

Hurricane Hanna will move through an environment favorable for strengthening during the next few hours.  Hanna will move over water where the Sea Surface Temperature is 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 Hanna will continue to intensify until it makes landfall on the coast of South Texas.

Hurricane Hanna will move south of a high pressure system that stretches across the southern U.S.  The high will steer Hanna a little to the south of due west.  On its anticipated track the center of Hurricane Hanna will make landfall on Padre Island later today.  The northern part of the eyewall will pass near Corpus Christi and that city could experience winds to hurricane force.  The southern part of the eyewall will pass near Port Mansfield which could also experience hurricane force winds.  The core of Hanna will pass north of Brownsville, but Brownsville, Harlingen and Mcallen could all experience winds to tropical storm force.

Easterly winds will blow water toward the coast of South Texas and they will cause a significant storm surge.  The storm surge could reach 6 to 9 feet (2 to 3 meters) near and just to the north of where the center makes landfall.  Hurricane Hanna will also drop heavy rain over South Texas.  Isolated locations could receive over a foot (0.3 meters) of rain and flash flooding is likely.

Elsewhere, Tropical Storm Gonazalo was quickly nearing Trinidad.  At 8:00 a.m. EDT on Saturday  the center of Tropical Storm Gonzalo was located at latitude 10.3°N and longitude 59.8°W which put it about 100 miles (160 km) east of Trinidad.  Gonzalo was moving toward the west at 18 m.p.h. (30 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 1009 mb.

Tropical Storm Warnings were in effect  for Tobago and Grenada.

Tropical Storm Karen Develops Near Windward Islands

Tropical Storm Karen developed near the Windward Islands on Sunday morning.  At 8:00 a.m. EDT on Sunday the center of Tropical Storm Karen was located at latitude 11.9°N and longitude 60.9°W which put it about 55 miles (90 km) east-southeast of Grenada.  Karen was moving toward the west-northwest at 9 m.p.h. (15 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 Warnings were in effect for Trinidad and Tobago, Grenada, and for St. Vincent and the Grenadines.

A center of circulation developed in an area of thunderstorms east of the axis of a strong tropical wave near the Windward Islands on Sunday morning and the National Hurricane Center designated the system as Tropical Storm Karen.  The strongest thunderstorms were forming in bands south and west of the center of circulation.  Bands north and west of the center consisted primarily of showers and lower clouds.   Winds to tropical storm force extended out about 125 miles (200 km) on the eastern side of the tropical storm.

An upper level trough northeast of the Lesser Antilles was producing strong westerly winds which were blowing across the northern side of Tropical Storm Karen.  An upper level ridge over the Caribbean Sea was producing strong northeasterly winds which were blowing across the western part of Karen.  The upper level winds were causing moderate vertical wind shear which was inhibiting the development of thunderstorms in those parts of Tropical Storm Karen.  The center of circulation developed in a region between the stronger upper level westerly and northeasterly winds.  Most of the thunderstorms were forming in that area where the upper level winds were not as strong.

Tropical Storm Karen will move through an environment that will be only marginally favorable for intensification during the next day or two.  Karen will move over water where the Sea Surface Temperature  is near 29°C.  However, the upper level trough and upper level ridge will continue to cause moderate vertical wind shear.  If Tropical Storm Karen remains in the zone where the upper level winds are not as strong, it could strengthen.  However, if Karen moves under stronger upper level winds, it could weaken to a depression.  Tropical Storm Karen is forecast to move closer to the center of the upper level ridge in two or three days.  If that happens, then the upper level winds will be weaker and Karen could intensify.

Tropical Storm Karen will move around the western end of a subtropical high pressure system over the Atlantic Ocean.  The high will steer Karen toward the west-northwest during the next 12 hours.  Karen will move more toward the north when reaches the end of the ridge.  On its anticipated track Tropical Storm Karen will move across the Windward Islands on Sunday.  Karen will bring gusty winds and locally heavy rain.  Flash floods are likely.  Tropical Storm Karen could approach Puerto Rico and the Virgin Islands on Tuesday.  Tropical Storm Watches are likely to be issued for those islands.

Elsewhere over the Atlantic Ocean Tropical Storm Jerry was spinning south of Bermuda.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Jerry was located at latitude 25.0°N and longitude 66.9°W which put it about 520 miles (835 km) south-southwest of Bermuda.  Jerry was moving toward the north-northwest at 12 m.p.h. (19 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 1002 mb.

Strong Tropical Wave Brings Wind and Rain to Windward Islands

A strong tropical wave was bringing wind and rain to the Windward Islands.  At 8:00 p.m. EDT on Saturday the center of the tropical wave was located at latitude 11.9°N and longitude 59.5°W which put it about 75 miles (120 km) northeast of Tobago.  The wave was moving toward the west at 20 m.p.h. (32 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 1009 mb.

The axis of the tropical wave stretched from near Barbados to just east of Trinidad and Tobago.  More thunderstorms developed near the axis of the wave on Saturday night and there were indications that a center of circulation could be forming northeast of Trinidad and Tobago.  There were winds to near tropical storm force.  The National Hurricane Center issued a special Tropical Weather Outlook on Saturday night and indicated that tropical storm watches and warnings might need to be issued on Sunday.  The wave is forecast to move over the Windward Islands and into the eastern Caribbean Sea on Sunday.

Elsewhere over the Atlantic Ocean, Tropical Storm Jerry was located north of Puerto Rico.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Jerry was location at latitude 24.1°N and longitude 66.3°W which put it about 575 miles (925 km) south of Bermuda.  Jerry was moving toward the northwest 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 1002 mb.

Tropical Storm Don Forms East of Windward Islands

Tropical Storm Don formed east of the Windward Islands on Monday.  An Air Force Reserve Hurricane Hunter reconnaissance aircraft found a small, but well defined center of circulation in a cluster of thunderstorms formerly designated Invest 91L.  Based on information from the recon plane, the National Hurricane Center classified the system at Tropical Storm Don.  At 5:00 p.m. EDT on Monday the center of Tropical Storm Don was located at latitude 11.2°N and longitude 52.6°W which put it about 595 miles (955 km) east of Trinidad.  Don was moving toward the west at 17 m.p.h. (28 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 1009 mb.

A Tropical Storm Warning has been issue for Grenada.  Tropical Storm Watches are in effect for Barbados, St. Vincent, the Grenadines and St. Lucia.

The reconnaissance plane found a small, tight center of circulation near the surface.  A thin band of showers and thunderstorms wrapped partially around the western side of the center.  Other thin bands of showers and thunderstorms were occurring north and west of the center.  There were fewer showers and thunderstorms in the eastern half of Tropical Storm Don.  The circulation of Tropical Storm Don is small and winds to tropical storm force only extend out about 25 miles (40 km) from the center of circulation.  Thunderstorms in the band west of the center of circulation were generating some upper level divergence but it was not well developed.

Tropical Storm Don will move through an environment that will be somewhat favorable for intensification during the next several days.  Don will move over water where the Sea Surface Temperature is near 29°C.  An upper level ridge east of Don is generating easterly winds which are blowing over the top of the tropical storm.  Those easterly winds are generating some vertical wind shear and the shear may partly explain why there are fewer showers and thunderstorms in the eastern half of the circulation.  The shear will also inhibit intensification, but Tropical Storm Don could strengthen during the next 24 to 48 hours.

A strong subtropical high over the Atlantic Ocean is steering Tropical Storm Don toward the west and a generally westward motion is expected to continue during the next several days.  On its anticipated track the center of Tropical Storm Don could pass south of Barbados on Tuesday.  Tropical Storm Don could move over the southern Windward Islands on Tuesday night.  Tropical Storm Don could bring gusty winds and locally heavy rain to the southern Windward Islands.  Flash floods could occur in areas of steep terrain, if they receive locally heavy rainfall.

Tropical Storm Bret Forms Near Trinidad

An Air Force Reserve Hurricane Hunter aircraft investigated Potential Tropical Cyclone 02 on Monday afternoon as it moved closer to Trinidad and the plane found a closed circulation.  Based on data from the reconnaissance plane the National Hurricane Center classified the system as Tropical Storm Bret.  At 8:00 p.m. EDT on Monday the center of Tropical Storm Bret was located at latitude 9.5°N and longitude 60.5°W which put it about 85 miles (135 km) southeast of Trinidad.  Bret was moving toward the west-northwest at 25 m.p.h. (40 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 1008 mb.

Tropical Storm Warnings are in effect for Grenada, Trinidad, Tobago and the coast of Venezuela from Pedernales to Cumana.  Tropical Storm Watches have been issued for Aruba, Bonaire, and Curacao.

The reconnaissance plane found a well organized center of circulation at the surface.  The strongest winds were occurring in vigorous bands of thunderstorms located north of the center of circulation.  Weaker showers and thunderstorms were occurring in bands south of the center of circulation.  The thunderstorms north of the center were generating upper level divergence which was pumping mass away to the north of the tropical storm.  The circulation of Tropical Storm Bret is fairly small.  Winds to tropical storm force only extend out about 80 miles (130 km) to the north of the center of circulation.

Tropical Storm Bret will move through an environment that will only be marginally favorable for intensification on Tuesday.  Bret will move over water where the Sea Surface Temperature is near 29°C.  An upper level ridge east of Bret and an upper level trough to the west are producing southerly winds which are generating moderate vertical wind shear.  The vertical wind shear may be responsible for the asymmetrical distribution of thunderstorms.  The shear will also inhibit intensification during the next 24 hours, although some intensification may possible.  When Bret moves into the Caribbean Sea, the vertical wind shear will increase.  Tropical Storm Bret will also move very close to the north coast of Venezuela.  It could pull drier air from South America into the southern part of the circulation, which would contribute to further weakening.

The subtropical high pressure system over the Atlantic Ocean is steering Tropical Storm Bret rapidly toward the west-northwest.  A fast west-northwesterly motion is forecast to continue for several more days.  On its anticipated track Tropical Storm Bret will move across Trinidad, near the north coast of Venezuela and toward Aruba, Bonaire, and Curacao.  It will bring gusty winds and locally heavy rain to all of those places.