Tag Archives: Cape Race

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.

Don Strengthens to a Hurricane over the Gulf Stream

Former Tropical Storm Don strengthened to a hurricane over the Gulf Stream on Saturday afternoon. At 5:00 p.m. EDT on Saturday the center of Hurricane Don was located at latitude 40.1°N and longitude 50.0°W which put it about 480 miles (775 km) south-southeast of Cape Race, Newfoundland. Don was moving toward the north at 12 m.p.h. (19 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.

Former Tropical Storm Don intensified to a hurricane as it moved over the warm water in the Gulf Stream on Saturday afternoon. A small circular eye formed at the center of Hurricane Don. 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 Don. Storms near the core generated upper level divergence that pumped mass away from the hurricane. The removal of mass allowed the surface pressure to decrease to 988 mb at the center of Hurricane Don.

The circulation around Hurricane Don was small. Winds to hurricane force extended out 15 miles (25 km) from the center of Don’s circulation. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.

Hurricane Don will move into an environment that will be very unfavorable for a hurricane during the next 24 hours. Don will move north of the Gulf Stream where the Sea Surface Temperatures are colder than 26˚C. An upper level trough over eastern Canada will produce southwesterly winds that will blow toward the top of Don’s circulation. Those winds will cause the vertical wind shear to increase on Sunday. The combination of much colder water and more vertical wind shear will cause Hurricane Don to weaken during the next 24 hours.

Hurricane Don will move around the northwestern part of a hurricane pressure system over the eastern Atlantic Ocean. The high pressure system and the upper level trough over eastern Canada will steer Don toward the northeast during the next 24 hours. On its anticipated track, Hurricane Don will stay southeast of Newfoundland.

Tropical Storm Don Spins South-southeast of Newfoundland

Tropical Storm Don was spinning over the Atlantic Ocean south-southeast of Newfoundland on Friday morning. At 11:00 a.m. EDT on Friday the center of Tropical Storm Don was located at latitude 35.8°N and longitude 46.5°W which put it about 825 miles (1330 km) south-southeast of Cape Race, Newfoundland. Don was moving toward the west-northwest at 10 m.p.h. (16 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 1002 mb.

The circulation around Tropical Storm Don was well organized on Friday morning. The inner end of a rainband wrapped around the center of Don’s circulation. A clear area was visible on satellite images at the center of Tropical Storm Don. 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 storm. The circulation around Tropical Storm Don was small. Winds to tropical storm force extended out 60 miles (95 km) from the center of circulation.

Tropical Storm Don will move through an environment that will be marginally favorable for intensification during the next 24 hours. Don will move over water where the Sea Surface Temperatures are near 25˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Don could intensify during the next 24 hours. Don will move over the warmer water of the Gulf Stream for a brief time on Saturday. Tropical Storm Don could strengthen while it is over the Gulf Stream, but Don will then move over much colder water when it gets north of the Gulf Stream.

Tropical Storm Don will move around the western part of a high pressure system over the northeastern Atlantic Ocean. The high pressure system will steer Don toward the northwest during the next 24 hours. On its anticipated track, Tropical Storm Don will continue to make a big clockwise loop over the Central Atlantic south of Newfoundland.

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.

Hurricane Earl Speeds Northeast

Hurricane Earl sped toward the east over the North Atlantic Ocean south of Newfoundland on Saturday morning. At 5:00 a.m. EDT on Saturday the center of Hurricane Earl was located at latitude 41.2°N and longitude 53.5°W which put it about 380 miles (610 km) south of Cape Race, Newfoundland. Earl was moving toward the northeast at 35 m.p.h. (56 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 955 mb.

Hurricane Earl was making a transition to an extratropical cyclone on Saturday morning. An upper level trough over eastern Canada was producing strong southwesterly winds that were blowing toward the top of Earl’s circulation. Those winds were causing strong vertical wind shear. The wind shear was causing the eyewall around the eye at the center of Hurricane Earl to become fragmented. The eyewall was broken on the southwestern side of the eye. There were still thunderstorms in the northeastern remnant of the eyewall. Bands of showers and thunderstorms in the northeastern part of Earl’s circulation revolved around the center of Earl. Bands in the southwestern part of Hurricane Earl consisted primarily of showers and lower clouds.

Hurricane Earl was almost as large as Hurricane Sandy was in 2012. Winds to hurricane force extended out 90 miles (145 km) from the center of Earl’s circulation. Winds to tropical storm force extended out 415 miles (675 km) from the center of circulation. The Hurricane Intensity Index (HII) was 17.8. The Hurricane Size Index (HSI) was 32.4 and the Hurricane Wind Intensity Size Index (HWISI) was 50.2.

Hurricane Earl will complete the transition to a strong extratropical cyclone during the next 24 hours. Earl will move over water where the Sea Surface Temperatures are colder than 26˚C. The trough over eastern Canada will continue to cause strong vertical wind shear. The colder water and strong vertical wind shear will cause Earl’s structure to compete the transition to an extratropical cyclone.

The westerly winds in the middle latitudes will steer the extratropical cyclone toward the east during the next few days. The extratropical cyclone will weaken gradually over the North Atlantic Ocean south of Greenland during the next week.

Hurricane Larry Races Toward Newfoundland

Hurricane Larry raced toward Newfoundland on Friday morning. At 11:00 p.m. EDT on Friday the center of Hurricane Larry was located at latitude 40.0°N and longitude 60.5°W which put it about 595 miles (955 km) southwest of Cape Race, Newfoundland. Larry was moving toward the north-northeast at 29 m.p.h. (46 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 971 mb.

A Hurricane Warning was in effect for the portion of the coast from Arnold’s Cove to Jones Harbour, Newfoundland. The Hurricane Warning included St. John’s. Tropical Storm Warnings were in effect for the portions of the coast from Francios to Arnold’s Cove and from Jones Harbour to Fogo Island, Newfoundland.

The structure of Hurricane Larry changed as it raced toward the north-northeast. A rainband wrapped around the existing eye and eyewall and it appeared that concentric eyewalls may have formed. Microwave satellite imagery showed indications of a smaller inner eye inside a much larger outer eye. Drier air was being pulled into the circulation around Hurricane Larry. Zones of drier air with fewer clouds were beginning to appear between the rainbands.

The circulation around Hurricane Larry was large. Winds to hurricane force extended out 80 miles (130 km) from the center of Larry. Winds to tropical storm force extended out 240 miles (390 km) from the center of circulation. The Hurricane Intensity Index (HII) for Larry was 11.5. The Hurricane Size Index (HSI) was 27.9 and the Hurricane Wind Intensity Size Index (HWISI) was 39.4. Hurricane Larry was about 60% of the size of Hurricane Sandy (2012).

Hurricane Larry will move through an environment that will allow Larry to maintain its intensity until it reaches Newfoundland. Larry will move over cooler water when it moves north of the Gulf Stream. An upper level trough over the eastern U.S. will produce southwesterly winds that will blow toward the top of Larry’s circulation. Those winds will cause moderate vertical wind shear. However, the southwesterly winds will also contribute to upper level divergence to the northeast of Hurricane Larry. Enhanced upper level divergence will allow the pressure at the surface to remain low. In addition, Hurricane Larry will begin to make a transformation to an extratropical cyclone when it nears Newfoundland.

The upper trough over the eastern U.S. will steer Hurricane Larry rapidly toward the northeast during the next 24 hours. On its anticipated track Hurricane Larry will reach Newfoundland on Friday night. Larry will bring strong winds and locally heavy rain to southeast Newfoundland. Widespread power outages could occur. Heavy rain could cause flash floods in some locations.

Tropical Storm Zeta Strengthens over Northwest Caribbean

Tropical Storm Zeta strengthened over the northwestern Caribbean Sea on Sunday. At 11:00 p.m. EDT on Sunday the center of Tropical Storm Zeta was located at latitude 18.1°N and longitude 83.8°W which put it about 260 miles (425 km) southeast of Cozumel, Mexico. Zeta was moving toward the north-northwest at 2 m.p.h. (3 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 997 mb.

The government of Mexico issued a Hurricane Warning for the coast of the Yucatan Peninsula from Tulum to Rio Lagartos and for Cozumel. The Hurricane Warning included Cancun. A Tropical Storm Warning was in effect for the Cuban province of Pinar del Rio.

The circulation around Tropical Storm Zeta strengthened during Sunday, but the distribution of thunderstorms was still asymmetrical. The stronger thunderstorms were mostly occurring in bands in the southern half of Zeta. Bands in the northern half of the circulation consisted primarily of showers and lower clouds. Despite the asymmetrical structure, thunderstorms near that center of circulation generated upper level divergence which pumped mass away from the tropical storm. The removal of mass allowed the surface pressure to decrease, which caused the wind speed to increase. Winds to tropical storm force extended out about 100 miles (160 km) from the center on the eastern side of Tropical Storm Zeta. The winds on the western side of Zeta were blowing at less than tropical storm force.

Tropical Storm Zeta will move through an environment favorable for intensification during the next 24 hours.  Zeta will move over water where the Sea Surface Temperature is near 29°C.  It will be under an upper level ridge where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Zeta will intensify during the next 24 hours and it could strengthen to a hurricane. Zeta could weaken if the center passes over the northeastern Yucatan Peninsula.

A ridge of high pressure will strengthen to the northeast of Tropical Storm Zeta on Monday. The ridge will steer Zeta toward the northwest on Monday and Tuesday. On its anticipated track Tropical Storm Zeta could pass near the northeastern tip of Yucatan Peninsula on Monday night. Zeta could be a hurricane when it reaches the Yucatan. Zeta will move more toward the north on Wednesday when it moves around the western end of the ridge. Zeta could reach the central coast of the Gulf of Mexico on Wednesday afternoon.

Elsewhere over the Atlantic Ocean, Tropical Storm Epsilon made a transition to a powerful extratropical cyclone east of Newfoundland. At 11:00 p.m. EDT on Sunday the center of Tropical Storm Epsilon was located at latitude 48.6°N and longitude 38.8°W which put it about 675 miles (1090 km) east-northeast of Cape Race, Newfoundland. Epsilon was moving toward the northeast at 46 m.p.h. (74 km/h). The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h). The minimum surface pressure was 968 mb.

TD 28 Strengthens to Tropical Storm Zeta

Tropical Depression Twentyeight strengthened to Tropical Storm Zeta over the northwestern Caribbean Sea early on Sunday. At 8:00 a.m. EDT on Sunday the center of Tropical Storm Zeta was located at latitude 17.8°N and longitude 83.8°W which put it about 275 miles (445 km) southeast of Cozumel, Mexico. Zeta was nearly stationary. 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.

The government of Mexico issued a Hurricane Watch for the coast of the Yucatan Peninsula from Tulum to Rio Lagartos and for Cozumel. The Hurricane Watch included Cancun. A Tropical Storm Warning was in effect for the Cuban province of Pinar del Rio.

Based on data from a NOAA airplane and a scatterometer on a satellite, the National Hurricane Center determined that Tropical Depression Twentyeight had strengthened to Tropical Storm Zeta over the northwestern Caribbean Sea early on Sunday morning. The circulation around Zeta was still not well organized. The circulation in the middle troposphere was located to the east of the surface center. The lower level circulation seemed to be shifting closer to the middle level circulation and it was possible that a new center could be developing under the middle level rotation. Bands of showers and thunderstorms were revolving around the middle level center. Storms near that center were generating upper level divergence which pumped mass away from the tropical storm. Data from the airplane indicated that winds to tropical storm force were occurring southeast of the center of Zeta. The tropical storm force winds extended out about 80 miles (130 km) from the center of Zeta.

Tropical Storm Zeta will move through an environment favorable for intensification during the next several days.  Zeta will move over water where the Sea Surface Temperature is near 29°C.  It will be under an upper level ridge where the upper level winds are weak and there will be little vertical wind shear.  If Zeta remains stationary for another 12 to 24 hours, its winds will mix cooler water to the surface, which could interrupt intensification. Tropical Storm Zeta will intensify during the next 24 hours and it could strengthen to a hurricane early next week.

Tropical Storm Zeta will be in an area where the steering winds are weak during the next 12 to 24 hours. Zeta could meander over the northwestern Caribbean Sea during that time. A ridge of high pressure will strengthen to the northeast of Tropical Storm Zeta later on Sunday. The ridge will steer Zeta toward the northwest on Monday and Tuesday. On its anticipated track Tropical Storm Zeta could pass near the northeastern tip of Yucatan Peninsula on Monday evening.

Elsewhere over the Atlantic Ocean, Hurricane Epsilon was passing south of Newfoundland. At 5:00 a.m. EDT on Sunday the center of Hurricane Epsilon was located at latitude 42.8°N and longitude 53.7°W which put it about 270 miles (435 km) south of Cape Race, Newfoundland. Epsilon was moving toward the northeast at 30 m.p.h. (48 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 960 mb.

Tropical Depression Five Strengthens into Tropical Storm Edouard

Former Tropical Depression Five strengthened into Tropical Storm Edouard northeast of Bermuda on Sunday night.  At 11:00 p.m. EDT on Sunday the center of Tropical Storm Edouard was located at latitude 37.2°N and longitude 56.9°W which put it about 685 miles (1100 km) south-southwest of Cape Race, Newfoundland.  Edouard was moving toward the northeast at 35 m.p.h. (56 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 Edouard became the earliest fifth named storm to form over the Atlantic Ocean during the satellite era since 1966.

Former Tropical Depression Five exhibited greater organization on satellite imagery and the National Hurricane Center designated the system as Tropical Storm Edouard.  More thunderstorms formed in bands east of the center of circulation.  Bands in the northern and western parts of Edouard consisted primarily of showers and lower clouds.  Winds to tropical storm force were occurring within 60 miles of the center in the southeastern quadrant of Tropical Storm Edouard.  The winds in the other parts of Edouard were blowing at less than tropical storm force.

Tropical Storm Edouard will move through an environment that could allow for a little more intensification during the next 12 hours.  Edouard will move over water where the Sea Surface Temperature is near 24°C.  It will move under the southern fringe of the upper level westerly winds in the middle latitudes.  Those winds will blow toward the top of the circulation and they will cause moderate vertical wind shear.  The relatively cool water temperatures and moderate vertical wind shear will limit future intensification.  Tropical Storm Edouard could get a little stronger on Monday.  Edouard will move over cooler water later on Monday and it will start a transition to an extratropical cyclone.

Tropical Storm Edouard will move around the northern side of a subtropical high pressure system over the Atlantic Ocean.  The high will steer Edouard toward the northeast.  On its anticipated track Tropical Storm Edouard will pass well south of Newfoundland.

Tropical Storm Dolly Develops Southwest of Newfoundland

Tropical Storm Dolly developed southwest of Newfoundland on Tuesday.  At 1:00 p.m. EDT on Tuesday the center of Tropical Storm Dolly was located at latitude 39.4°N and longitude 61.9°W which put it about 660 miles (1065 km) southwest of Cape Race, Newfoundland.  Dolly was moving toward the east-northeast at 13 m.p.h. (20 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. (5 km/h).  The minimum surface pressure was 1002 mb.

Former Subtropical Depression Four strengthened on Tuesday and its structure continued to make a transition to a more tropical cyclone like appearance.  A band of showers and thunderstorms wrapped closely around the southern side of the center of circulation.  The strongest winds were occurring in that band.  Other bands of showers and thunderstorms were revolving around the center of circulation.  A scatterometer on board a satellite estimated that there were winds above tropical storm force and the National Hurricane Center designated the system as Tropical Storm Dolly.  The winds to tropical storm force extended out 65 miles (105 km) on the southern side of Dolly.  The winds in the other parts of the circulation were generally blowing at less than tropical storm force.

Tropical Storm Dolly will move through an environment that could be favorable for intensification during the next 6 to 12 hours.  Dolly will move near the northern part of the Gulf Stream where the water is near 26°C.  It will move around the southeastern part of a weakening upper level low.  The upper low will produce some vertical wind shear, but the shear will not be strong enough to prevent intensification during the next 6 to 12 hours.  Tropical Storm Dolly is likely to move north of the Gulf Stream on Wednesday.  When Dolly moves over colder water it will start to weaken.

Tropical Storm Dolly will move around the southeastern side of the upper low during the next few hours.  The upper low will weaken on Wednesday and both the upper low and Dolly will be steered toward the northeast by a larger upper level trough over eastern North America.  On its anticipated track Tropical Storm Dolly could bring gusty winds and rain to southeastern Newfoundland on Wednesday night and Thursday.