Tag Archives: Tropical Storm Debby

Tropical Storm Debby Moves Inland

Tropical Storm Debby moved inland over the eastern U.S. on Thursday morning.  At 2:00 p.m. EDT on Thursday the center of Tropical Storm Debby was located at latitude 34.8°N and longitude 80.2°W which put the center about 55 miles (90 km) east-southeast of Charlotte, North Carolina.  Debby was moving toward the north-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 997 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Surf City to Ocracoke Inlet, North Carolina.

Tropical Storm Debby weakened gradually as it moved inland over South Carolina on Thursday morning.  The strongest winds were in bands in the part of Tropical Storm Debby that was still over the Atlantic Ocean.  Winds to tropical storm force extended out 195 miles (315 km) east of the center of Debby’s circulation.  The winds were blowing at less than tropical storm force in the parts of Debby that were over land.

Bands of thunderstorms in the northern and eastern parts of Tropical Storm Debby were dropping heavy rain over eastern North Carolina and southern Virginia.  Flood Warnings were in effect for many counties in eastern North Carolina.

The Lumber River at Lumberton, North Carolina was at 17.73 feet (5.40 meters) which was in the Moderate Flood range.  The river was still rising.  The Rock River near Norwood, North Carolina was at 26.73 feet (8.15 meters) which was in the Minor Flood range.  The river was still rising.  The Little River at Manchester, North Carolina was at 23.46 feet (7.15 meters) which is in the Moderate Flood range.  The river was still rising.  The Little Pee Dee River near Galivants Ferry, South Carolina was at 9.25 feet (2.82 meters) which is in the Minor Flood range.  The river was still rising.

An upper level trough approaching the Great Lakes will steer Tropical Storm Debby more quickly toward the northeast during the next 24 hours.  Debby will weaken to a tropical depression during the next few hours.  Even though the wind speeds will decrease further, Tropical Storm Debby will continue to drop heavy rain on the eastern side of the Appalachian Mountains.  Heavy rain is likely to cause floods in additional locations.

Flood Watches are in effect for North Carolina, Virginia, eastern West Virginia, central Pennsylvania, central and northeastern New York, northern Vermont, and northern New Hampshire.

Tropical Storm Debby Drops Heavy Rain on the Carolinas

Tropical Storm Debby dropped heavy rain on the Carolinas on Wednesday night.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Debby was located at latitude 32.9°N and longitude 79.5°W which put the center about 25 miles (40 km) east-northeast of Charleston, South Carolina.   Debby was moving toward the north-northwest at 3 m.p.h. (5 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 994 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Edisto Beach, South Carolina to Surf City, North Carolina.  The Tropical Storm Warning included Charleston, South Carolina.

A Tropical Storm Watch was in effect for the portion of the coast from Surf City to Beaufort Inlet, North Carolina.

Bands in the northern part of Tropical Storm Debby dropped heavy rain on eastern South Carolina and eastern North Carolina.  There were Flood Warnings for a number of rivers in eastern South Carolina and eastern North Carolina including the Cape Fear River, the Lumber River, the Little Pee Dee River and the Great Pee Dee River.

Drier air was still present near the center of Tropical Storm Debby.  There were a few thunderstorms near the center of Debby, but much of the middle of Debby’s circulation consisted of showers and lower clouds.  Thunderstorms were occurring in bands in the outer parts of the circulation in northern side of Tropical Storm Debby.  Thunderstorms were also occurring in bands in outer parts of the circulation in the southern side of Debby.

The distribution of winds in Tropical Storm Debby continued to be asymmetrical.  Winds to tropical storm force extended out 185 miles (300 km) in the eastern side of Debby’s circulation.  Winds to tropical storm force extended out 105 miles (165 km) in the southwestern quadrant of Tropical Storm Debby.  The winds in the northwestern quadrant, which was mostly over land, were blowing at less than tropical storm force.

Tropical Storm Debby will move through an environment marginally favorable for intensification during the next few hours.  Debby will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the southeastern U.S.  The upper level winds are weak near the center of the ridge and there will be little vertical wind shear.  The drier air in the middle part of Debby’s circulation will inhibit intensification. Tropical Storm Debby is likely to maintain its intensity during the next few hours.

Tropical Storm Debby will move around the western side of high pressure system over the western Atlantic Ocean.  The high pressure system will steer Debby slowly toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Debby will cross the coast of South Carolina on Wednesday night.  An upper level trough approaching the Great Lakes will steer Debby more quickly toward the northeast on Friday.

Tropical Storm Debby will continue to drop heavy rain on parts of South Carolina and North Carolina on Thursday.  Since Debby will move slowly, persistent heavy rain is likely to cause floods in some locations.  Tropical Storm Debby will drop heavy rain on the eastern slopes of the Appalachian Mountains on Friday.

Flood Watches are in effect for parts of South Carolina, North Carolina, Virginia, western Maryland, eastern West Virginia, and Pennsylvania.

Southerly winds blowing around the eastern side of Tropical Storm Debby will continue to push water toward the coast of South Carolina and North Carolina.  Debby could cause a storm surge of up to 4 feet (1 meter).

 

The wind

Tropical Storm Debby Strengthens

Tropical Storm Debby strengthened over the Atlantic Ocean southeast of South Carolina on Wednesday.  At 2:00 p.m. EDT on Wednesday the center of Tropical Storm Debby was located at latitude 32.4°N and longitude 79.1°W which put the center about 55 miles (90 km) east-southeast of Charleston, South Carolina.  Debby was moving toward the northeast at 3 m.p.h. (5 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 995 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Savannah River Georgia to Surf City, North Carolina.  The Tropical Storm Warning included Charleston, South Carolina.

A Tropical Storm Watch was in effect for the portion of the coast from Surf City to Beaufort Inlet, North Carolina.

Tropical Storm Debby strengthened on Wednesday morning as it moved slowly over the Atlantic Ocean southeast of South Carolina.  A U.S. Air Force Reserve Hurricane Hunter aircraft found winds to 60 m.p.h. (95 km/h) in a band more than 100 miles (160 km) southeast of the center of Debby’s circulation.  The winds in the other parts of Tropical Storm Debby were not as strong.

More thunderstorms began to form in bands revolving around the center of Tropical Storm Debby after more of Debby’s circulation moved over the Atlantic Ocean.  There were only a few thunderstorms near the center of Debby’s circulation because drier air was still present in the middle of that circulation.  However, more water vapor was evaporating into the air and the air was becoming moister.  Some of the thunderstorms in Debby started to generate more upper level divergence that pumped mass away from the tropical storm  The removal of mass caused the surface pressure to decrease slowly.

The distribution of wind speed around Tropical Storm Debby was very asymmetrical.  The strongest winds were occurring in the southeastern quadrant of Debby’s circulation.  Winds to tropical storm force extended out 185 miles (300 km) in the southeastern quadrant of Tropical Storm Debby.  Winds to tropical storm force extended 140 miles (225 km) in the northeastern and southwestern quadrants of Debby’s circulation.  The winds in the northwestern quadrant of Tropical Storm Debby were blowing at less than tropical storm force.

Tropical Storm Debby will move through an environment favorable for intensification during the next few hours.  Debby will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the southeastern U.S.  The upper level winds are weak near the center of the ridge and there will be little vertical wind shear.  The drier air in the middle part of Debby’s circulation will inhibit intensification.  Tropical Storm Debby could continue to intensify slowly during the next few hours.

Tropical Storm Debby will move around the western side of high pressure system over the western Atlantic Ocean.  The high pressure system will steer Debby slowly toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Debby will approach the coast of South Carolina on Wednesday night.

Tropical Storm Debby will continue to drop heavy rain on parts of South Carolina, North Carolina and eastern Georgia.   Since Debby will move slowly, persistent heavy rain is likely to cause floods in some locations.

Flood Watches are in effect for parts of South Carolina, North Carolina and eastern Georgia.

Southerly winds blowing around the eastern side of Tropical Storm Debby will continue to push water toward the coast of South Carolina and North Carolina.  Debby could cause a storm surge of up to 6 feet (1.8 meters).

 

 

Center of Tropical Storm Debby Near Savannah

The center of Tropical Storm Debby was near Savannah, Georgia on Tuesday morning.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Debby was located at latitude 31.9°N and longitude 81.0°W which put the center about 15 miles (25 km) south of Savannah, Georgia.  Debby was moving toward the east-northeast at 6 m.p.h. (10 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 999 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Altamaha Sound Georgia to Surf City, North Carolina.  The Tropical Storm Warning included Charleston, South Carolina.

A Tropical Storm Watch was in effect for the portion of the coast from Surf City to Beaufort Inlet, North Carolina.

Tropical Storm Debby continued to drop heavy rain over parts of South Carolina and eastern Georgia.  The airport at Charleston, South Carolina reported 8.11 inches (206 mm) of rain during the past 24 hours.  Valdosta, Georgia received 2.75 inches (70 mm) of rain.  Sarasota, Florida reported 11.06 inches (281 mm) of rain from Debby.  Gainesville, Florida received 6.80 inches (173 mm) of rain.  Jacksonville, Florida reported 4.70 inches (119 mm) of rain.  It is likely that higher rainfall totals occurred in some places where bands moved persistently over the same locations.

Southerly winds blowing around the eastern side of Tropical Storm Debby were pushing water toward the coast of South Carolina.  There were numerous reports of water in streets in Charleston, South Carolina.

Tropical Storm Debby weakened during the day it spent moving slowly across northern Florida and southeastern Georgia.  Drier air wrapped around the western and southern sides of Debby’s circulation.  Bands in the southwestern and southeastern quadrants of Tropical Storm Debby consisted primarily of showers and lower clouds.  Showers and thunderstorms were occurring in bands in the outer parts of the northeastern and northwestern quadrants of Tropical Storm Debby.  There were also showers and lower clouds near the center of Debby.

The distribution of wind speeds in Tropical Storm Debby was also asymmetrical.  Winds to tropical storm force extended out 205 miles (330 km) in the eastern side of Debby.  Those winds were occurring in bands in the outer parts of Debby’s circulation.  The winds in the parts of Debby’s circulation that were over land were blowing at less than tropical storm force.

Tropical Storm Debby will move into an environment favorable for intensification.  Debby will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over the southeastern U.S.  The upper level winds are weak near the center of the ridge and there will be little vertical wind shear.  The drier air in the southern part of Debby’s circulation will inhibit intensification.  Tropical Storm Debby is likely to intensify slowly during the next 24 hours.

Tropical Storm Debby will be in an area where the steering winds are weak during the next 24 hours.  Debby is likely to move slowly toward the east-northeast during the rest of Tuesday.  A high pressure system located east of Tropical Storm Debby is forecast to strengthen on Wednesday.  That high pressure system will steer Debby slowly toward the north on Wednesday.  On its anticipated track, the center of Tropical Storm Debby could approach the coast of South Carolina on Wednesday night.

Tropical Storm Debby will continue to drop heavy rain on parts of South Carolina, North Carolina and eastern Georgia.  Since Debby will move slowly, persistent heavy rain is likely to cause floods.

Flood Watches are in effect for parts of South Carolina, North Carolina and eastern Georgia.

Southerly winds blowing around the eastern side of Tropical Storm Debby will continue to push water toward the coast of South Carolina and North Carolina.  Debby could cause a storm surge of up to 6 feet (1.8 meters).

A Storm Surge Warning is in effect for the portion of the coast from Altamaha Sound, Georgia, to South Santee River, South Carolina.

A Storm Surge Watch is in effect for the portion of the coast from South Santee River, South Carolina to Cape Fear, North Carolina.

Tropical Storm Debby Strengthens

Tropical Storm Debby strengthened over the eastern Gulf of Mexico on Sunday morning.  At 8:00 a.m. EDT on Sunday the center of Tropical Storm Debby was located at latitude 26.3°N and longitude 84.2°W which put the center about 155 miles (255 km) southwest of Tampa, Florida.  Debby was moving toward the north-northwest at 13 m.p.h. (20 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 1001 mb.

A Hurricane Warning was in effect for the portion of the coast from Suwannee River to Ochlockonee River, Florida.

A Hurricane Watch was in effect for the portion of the coast from Ochlockonee River to Indian Pass, Florida.  A Hurricane Watch was in effect for the portion of the coast from Suwannee River to Yankeetown, Florida.

A Tropical Storm Warning was in effect for the portion of the coast from East Cape Sable to Suwannee River, Florida.  A Tropical Storm Warning was in effect for the Florida Keys west of Seven Mile Bridge.  A Tropical Storm Warning was in effect for the Dry Tortugas.  A Tropical Storm Warning was in effect for the portion of the coast from Ochlockonee River to Indian Pass, Florida.

A Tropical Storm Watch was in effect for the Florida Keys from Seven Mile Bridge to Channel 5 Bridge,  A Tropical Storm Watch was in effect for portion of the coast from Indian Pass to Mexico Beach, Florida.  A Tropical Storm Watch was in effect for the portion of the coast from the Mouth of the St. Mary’s River, Georgia to the South Santee River, South Carolina.

Tropical Storm Debby strengthened over the eastern Gulf of Mexico on Sunday morning.  Thunderstorms were occurring near the center of Debby’s circulation.  Thunderstorms were also occurring in bands in the eastern side of Tropical Storm Debby.  Bands in the western side of Debby consisted primarily of showers and lower clouds.  Storms near the center of Debby’s circulation generated upper level divergence that pumped mass away to the east of the tropical storm.

The distribution of winds in Tropical Storm Debby continued to be asymmetrical.  Winds to tropical storm force extended out 140 miles (225 km) in the eastern half of Debby’s circulation.  Winds in the western side of Debby were blowing at less than tropical storm force.

Tropical Storm Debby will move through an environment favorable for intensification during the next 24 hours.  Debby will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the eastern side of an upper level trough over the eastern U.S.  The trough will produce southeasterly winds that will blow toward the top of Debby’s circulation.  Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification.  Tropical Storm Debby will intensify during the next 24 hours.  Debby is likely to intensify to a hurricane by Sunday night.

Tropical Storm Debby will move around the western end of a high pressure system over the western Atlantic Ocean.  The high pressure system will steer Debby toward the north during the next 24 hours.  On its anticipated track, Tropical Storm Debby will approach the coast of north Florida by Monday morning.

Tropical Storm Debby is likely to be a hurricane when it approaches the north coast of Florida.  Debby will bring strong winds and locally heavy rain to Florida.  Heavy rain could cause flooding in some locations.  Tropical Storm Debby could also cause a storm surge of up to 10 feet (3 meters) along the west coast of Florida.

A Storm Surge Warning is in effect for the portion of the coast from Aripeka to Indian Pass, Florida.

A Storm Surge Watch is in effect for the portion of the coast from Bonita Beach to Aripeka, Florida.  The Storm Surge Watch includes Tampa Bay and Charlotte Harbor.  A Storm Surge Watch is in effect for the portion of the coast from the Mouth of the St. Mary’s River, Georgia to South Santee River, South Carolina.

Tropical Storm Debby Forms North of Cuba

Tropical Storm Debby formed north of Cuba on Saturday afternoon.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Debby was located at latitude 23.4°N and longitude 83.2°W which put the center about 100 miles (160 km) west-southwest of Key West, Florida. Debby was moving toward the northwest at 15 m.p.h. (24 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 1007 mb.

A Hurricane Warning was in effect for the portion of the coast from Suwannee River to Ochlockonee River, Florida.

A Hurricane Watch was in effect for the portion of the coast from Ochlockonee River to Indian Pass, Florida.  A Hurricane Watch was in effect for the portion of the coast from Suwannee River to Yankeetown, Florida.

A Tropical Storm Warning was in effect for the portion of the coast from East Cape Sable to Suwannee River, Florida.  A Tropical Storm Warning was in effect for the Florida Keys west of Seven Mile Bridge.  A Tropical Storm Warning was in effect for the Dry Tortugas.

A Tropical Storm Watch was in effect for the Florida Keys from Seven Mile Bridge to Channel 5 Bridge,  A Tropical Storm Watch was in effect for portion of the coast from Indian Pass to Mexico Beach, Florida.

Former Tropical Depression Four strengthened on Saturday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Debby.  More thunderstorms formed near the center of Tropical Storm Debby after it moved north of Cuba.  More thunderstorms also formed in bands revolving around the center of Tropical Storm Debby.  Storm’s near the center of Debby’s circulation generated more upper level divergence that pumped mass away from the tropical storm.

The distribution of wind speeds in Tropical Storm Debby was asymmetrical.  Winds to tropical storm force extended out 140 miles (225 km) in the eastern half of Debby’s circulation.  Winds in the western side of Debby were blowing at less than tropical storm force.

Tropical Storm Debby Four will move through an environment favorable for intensification during the next 24 hours.  Debby will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southeastern part of an upper level ridge over the southeastern U.S.  The ridge will produce northeasterly winds that will blow toward the top of Debby’s circulation.  The winds in the lower levels of the atmosphere will also blow from the east and there will be little vertical wind shear.  Tropical Storm Debby will intensify during the next 24 hours.  Debby is likely to intensify slowly as it moves away from Cuba.  Tropical Storm Debby is likely to intensify more rapidly when it moves over the eastern Gulf of Mexico on Sunday.  Debby could strengthen to a hurricane over the Gulf of Mexico.

Tropical Storm Debby will move around the western end of a high pressure system over the western Atlantic Ocean.  The high pressure system will steer Debby toward the north-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Debby will approach the coast of north Florida on Monday.

Tropical Storm Debby will bring strong winds and locally heavy rain to Florida.  Heavy rain could cause flooding in some locations.  Tropical Storm Debby could also cause a storm surge of up to 8 feet (2.3 meters) along the west coast of Florida.

A Storm Surge Warning is in effect for the portion of the coast from Aripeka to Indian Pass, Florida.

A Storm Surge Watch is in effect for the portion of the coast from Bonita Beach to Aripeka, Florida.  The Storm Surge Watch includes Tampa Bay and Charlotte Harbor. 

Debby Makes a Transition to a Tropical Storm

Former Subtropical Storm Debby made a transition to a tropical storm on Wednesday.  At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Debby was located at latitude 41.2°N and longitude 48.3°W which put it about 1150 miles (1855 km) west-northwest of the Azores.  Debby was moving toward the northeast at 12 m.p.h. (19 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 1003 mb.

The structure of former Subtropical Storm Debby changed on Wednesday and it exhibited the characteristics of a tropical storm.  More thunderstorms formed around the center of circulation and those thunderstorms rose higher into the atmosphere.  Additional bands of showers and thunderstorms developed and revolved around the core of the circulation.  Storms near the core began to generate upper level divergence.  The strongest winds occurred closer to the center of circulation.  The National Hurricane Center designated Debby as a tropical storm based on information from satellites.

Tropical Storm Debby will move into an environment unfavorable for a tropical storm during the next 24 to 48 hours.   Debby was over water where the Sea Surface Temperature was near 26°C, but it will soon move over much cooler water.  It will start to weaken when it moves over the cooler water.  It could take several days for the circulation around Tropical Storm Debby to spin down.

Tropical Storm Debby will be steered toward the northeast as it moves between an upper level trough to the west and an upper level ridge to the east.  On its anticipated track Tropical Storm Debby will move between the Azores and Greenland.