Tag Archives: New Hampshire

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.

Hurricane Lee Moves Toward Nova Scotia

Hurricane Lee moved toward Nova Scotia on Friday. At 5:00 p.m. EDT on Friday the center of Hurricane Lee was located at latitude 37.9°N and longitude 66.7°W which put it about 490 miles (790 km) south-southwest of Halifax, Nova Scotia. Lee was moving toward the north at 20 m.p.h. (32 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 965 mb.

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 Ecum Secum, Nova Scotia.

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 also in effect for the portion of the coast from Shediac to Tidnish, New Brunswick. A Tropical Storm Warning was in effect for the portion of the coast from Fort Lawrence, New Brunswick to Point Tupper, Nova Scotia.

A Tropical Storm Watch was in effect for Prince Edward Island and the Magdalen Islands. A Tropical Storm Watch was in effect for the portion of the coast from Belledune to Shediac, New Brunswick. A Tropical Storm Watch was in effect for the portion of the coast from Tidnish, New Brunswick to Aulds Cove, Nova Scotia. A Tropical Storm Watch was also in effect for the portion of the coast from Aulds Cove to Meat Cove to Point Tupper, Nova Scotia.

Hurricane Lee was in the middle of a transition to an extratropical cyclone on Friday afternoon. 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 southerly 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 half of Lee’s circulation, Bands in the southern half of Hurricane Lee 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 115 miles (185 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 11.5. The Hurricane Size Index (HSI) was 39.8 and the Hurricane Wind Intensity Size Index (HWISI) was 51.3. 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 colder than 26°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 colder water, moderate vertical wind shear and the drier air will cause Hurricane Lee to weaken gradually during the next 24 hours. That same combination of environmental factors will also cause Hurricane Lee to complete a transition to an extratropical cyclone on Saturday.

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, Hurricane Lee reach Nova Scotia on Saturday. Even though Hurricane Lee will be making 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 to Nova Scotia, New Brunswick, and Prince Edward Island. Widespread outages of electricity are possible. 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, former Hurricane Margot weakened to a tropical storm west of the Azores and Tropical Depression Fifteen formed east of the Lesser Antilles. At 5:00 p.m. EDT on Friday the center of Tropical Storm Margot was located at latitude 36.0°N and longitude 37.9°W which put it about 615 miles (990 km) west of the Azores. Margot was moving toward the southeast at 3 m.p.h. (5 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 990 mb.

At 5:00 p.m. EDT on Friday the center of Tropical Depression Fifteen was located at latitude 15.4°N and longitude 44.0°W which put it about 1150 miles (1885 km) west of the Azores. The tropical depression was moving toward the northwest at 13 m.p.h. (21 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 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.

Tropical Storm Elsa Brings Wind and Rain to Northeast U.S.

Tropical Storm Elsa brought wind and rain to the northeast U.S. on Friday morning. At 8:00 p.m. EDT on Friday the center of Tropical Storm Elsa was located at latitude 40.2°N and longitude 73.1°W which put it about 90 miles (145 km) southwest of Montauk Point, New York. Elsa was moving toward the northeast at 31 m.p.h. (50 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 1000 mb.

A Tropical Storm Warning was in effect for the eastern portion of Long Island from East Rockaway Inlet to Port Jefferson Harbor. A Tropical Storm Warning was also in effect for the portion of the coast from New Haven, Connecticut to Sagamore Beach, Massachusetts including Block Island, Nantucket, Martha’s Vineyard, and Cape Cod.

Tropical Storm Elsa was buffeting the northeastern U.S. with gusty winds and locally heavy rain on Friday morning. The center of Elsa was passing south of Long Island, but rain was falling over an area that extended from New York City to southern Maine. Winds to tropical storm force extended out 150 miles (240 km) to the southeast of the center of Elsa. Winds to tropical storm force also extended out 80 miles (130 km) to the northeast of the center of circulation. Winds in the western half of Tropical Storm Elsa were not as strong. Elsa could cause sporadic power outages and flash floods in the northeastern U.S. on Friday.

Tropical Storm Elsa will make a transition to an extratropical cyclone during the next 24 hours, while it moves quickly toward the northeast. Elsa will move over water where the Sea Surface Temperatures are near 22°C. An upper level trough over the Great Lakes will produce strong southwesterly winds that will blow toward the top of Elsa’s circulation. Those winds will cause strong vertical wind shear. The combination of cooler Sea Surface Temperatures and strong wind shear will cause the structure of Tropical Storm Elsa to change to the structure of an extratropical cyclone. The center of Elsa will pass near Cape Cod on Friday afternoon. Elsa will pass over the Canadian Maritime Provinces on Friday night. It could be near Labrador and eastern Newfoundland on Saturday.

Hurricane Isaias Brings Wind and Rain to MidAtlantic States

Hurricane Isaias brought wind and rain to the MidAtlantic states of the U.S. on Tuesday.  Isaias weakened to a tropical storm on Tuesday morning as it moved over eastern Virginia.  At 8:00 a.m. EDT on Tuesday the center of Tropical Storm Isaias was located at latitude 37.7°N and longitude 76.8°W which put it about 15 miles (25 km) south-southeast of Tappahannock, Virginia.  Isaias was moving toward the north-northeast at 33 m.p.h. (54 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 993 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Surf City, North Carolina to Eastport, Maine including Albemarle Sound, Pamlico, Sound, Long Island, Long Island Sound, Block Island, Martha’s Vineyard and Nantucket.

The center of Hurricane Isaias officially made landfall on the coast at Ocean Isle Beach, North Carolina.  The maximum sustained wind speed at the time of landfall was 85 m.p.h. (135 km/h).  A weather station at Oak Island, North Carolina measured a sustained wind speed of 76 m.p.h. and a wind gust to 87 m.p.h. (140 km/h).

The center of Isaias moved rapidly toward the north-northeast during the overnight hours and it passed between Richmond and Norfolk, Virginia.  The strongest winds were occurring along the coast and over the Atlantic Ocean on Tuesday morning.  A weather station at Duck, North Carolina measured a sustained wind speed of 48 m.p.h. (78 km/h) and a wind gust of 63 m.p.h. (102 km/h).  A weather station at Poquoson, Virginia measured a sustained wind speed of 39 m.p.h. (63 km/h) and a wind gust to 56 m.p.h. (91 km/h).  A weather station on Third Island which is near the Mouth of Chesapeake Bay recently measured a sustained wind speed of 63 m.p.h. (101 km/h) and a wind gust of 77 m.p.h. (124 km/h).

Tropical Storm Isaias will move rapidly toward the north-northeast during the next 24 hours.  The center of Isaias will pass west of New York City later today.  Tropical Storm Isaias will gradually weaken, but it could bring tropical storm force winds to the northeastern U.S.  Wind shear in the lower levels of Tropical Storm Isaias’ circulation is contributing to the spin up of tornadoes.  Isaias will drop locally heavy rain and flash floods could occur.

Tropical Storm Isaias will take a track similar to the tracks taken by Hurricane Irene in 2011 and Hurricane Isabel in 2003.  Hurricane Irene was similar in strength and a little bit larger than Isaias when it hit North Carolina in 2011.  Irene was already weakening when it hit the coast while Isaias was strengthening at landfall.  According to the Tropical Cyclone Report on the National Hurricane Center’s (NHC) website, Hurricane Irene caused 15.8 billions dollars of damage in the U.S.

Hurricane Isabel was larger and stronger than Isaias was when it made landfall in North Carolina.  Isabel was also weakening at the time of landfall.  According to the Tropical Cyclone Report on NHC’s website for Hurricane Isabel, it caused 5.4 billion dollars of damage in the U.S.

 

Isaias Strengthens Back into a Hurricane

Isaias strengthened back into a hurricane on Monday evening.  At 9:00 p.m. EDT on Monday the center of Hurricane Isaias was located at latitude 33.1°N and longitude 78.8°W which put it about 55 miles (90 km) south-southeast of Myrtle Beach, South Carolina.  Isaias was moving toward the north-northeast at 18 m.p.h. (30 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 988 mb.

A Hurricane Warning was in effect for the portion of the coast from South Santee River, South Carolina to Surf City, North Carolina.  Tropical Storm Warnings were in effect for the portion of the coast from Edisto Beach to South Santee River, South Carolina and from Surf City, North Carolina to Stonington, Maine including Albemarle Sound, Pamlico Sound, Long Island, Long Island Sound, Block Island, Martha’s Vineyard, and Nantucket.  A Tropical Storm Watch was in effect for the portion of the coast from Stonington, to Eastport, Maine.

The circulation around Hurricane Isaias became much better organized on Monday afternoon.  A reconnaissance aircraft investigating Isaias found winds to hurricane force.  An elliptical eye developed at the center of Hurricane Isaias.  A broken ring of thunderstorms surrounded the elliptical eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Isaias.  The strongest rainbands were in the northern half of the circulation.  Bands in the southern half of Hurricane Isaias consisted primarily of showers and lower clouds.  Winds to hurricane force extended out 25 miles (40 km) from the center of circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center.

The Hurricane Intensity Index (HII) for Hurricane Isaias was 12.7.  The Hurricane Size Index (HSI) was 15.3 and the Hurricane Wind Intensity Size Index (HWISI) was 28.0.  Hurricane Isaias was capable of causing regional minor damage.

The center of Hurricane Isaias will make landfall between Myrtle Beach, South Carolina and Southport, North Carolina during the next few hours.  Isaias will bring hurricane force winds to the portion of the coast from Myrtle Beach, South Carolina to Surf City, North Carolina.  It will generate a storm surge of 3 to 6 feet (1 to 2 meters) along the coast.  Hurricane Isaias will drop heavy rain over extreme eastern South Carolina, eastern North Carolina and eastern Virginia.  Heavy rain could cause flooding in some locations.

The center of Hurricane Isaias will pass just west of Norfolk, Virginia on Tuesday morning.  isaias will weaken when it passes over land, but it will still bring gusty winds over eastern Virginia.  Isaias will pass near New York City on Tuesday evening and it will bring gusty winds to New England on Tuesday night.  Isaias could cause widespread power outages along the East Coast of the U.S.  It will also drop heavy rain east of the Appalachians and flash floods could occur in that region.

Tropical Storm Isaias Turns Toward the Carolinas

Tropical Storm Isaias turned toward the Carolinas on Monday morning.  At 11:00 a.m. EDT on Monday the center of Tropical Storm Isaias was located at latitude 30.7°N and longitude 80.1°W which put it about 220 miles (350 km) south-southwest of Myrtle Beach, South Carolina.  Isaias was moving toward the north at 13 m.p.h. (20 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 998 mb.

A Hurricane Warning was in effect for the portion of the coast from South Santee River, South Carolina to Surt City, North Carolina.  Tropical Storm Warnings were in effect for the portions of the coast from Altamaha Sound, Georgia to South Santee River, South Carolina and from Surf City North Carolina to Watch Hill, Rhode Island including Albemarle Sound, Pamlico Sound, Long Island and Long Island Sound.  A Tropical Storm Watch was in effect for the portion of the coast from Watch Hill, Rhode Island to Stonington, Maine including Block Island, Martha’s Vineyard and Nantucket.

Tropical Storm Isaias seemed to begin another cycle where the thunderstorm activity pulsed down during the overnight hours.  However, visible satellite and radar images seemed to indicate that thunderstorms were starting redevelop on Monday morning.  A band of thunderstorms appeared to be wrapping around the northern side of the circulation.  Thunderstorms were also increasing in bands in the northern and eastern parts of Isaias.  Bands in the southern and western sides of Isaias consisted primarily of showers and lower clouds.  The circulation of Tropical Storm Isaias could be pulling in some drier air around the southern and western parts of the storm.  That is a fairly typical occurrence with tropical systems moving up the East Coast of the U.S.  Winds to tropical storm force extended out 125 miles (200 km) in the northern and eastern quadrants of Isaias.  The winds in the southern and western parts of the circulation were mostly at less than tropical storm force.

Tropical Storm Isaias will move through an environment somewhat favorable for intensification during the next 12 hours.  Isaias will move over water where the Sea Surface Temperature is near 30°C.  An upper level trough over the Central U.S. will produce southwesterly winds which will blow toward the top of Isaias.  Those winds will cause moderate vertical wind shear which will inhibit intensification.  The wind shear is expected to decrease slightly later on Monday, which could allow Isaias to strengthen into a hurricane.

The upper level trough will steer Tropical Storm Isaias toward the north-northeast during the next several days.  On its anticipated track Tropical Storm Isaias will make landfall near Myrtle Beach, South Carolina on Monday night.  Isaias could be a hurricane when it makes landfall.  Isaias will bring gusty winds and a storm surge of 3 to 6 feet (1 to 2 meters) to the coast near and to the east of where the center makes landfall.  The center of Isaias will move across eastern North Carolina and it could be near Norfolk, Virginia on Tuesday morning.  Tropical Storm Isaias could pass near New York City later on Tuesday.

Tropical Storm Isaias will bring gusty winds to the East Coast of the U.S. from South Carolina to Maine.  Isaias will also drop locally heavy rain from eastern South Carolina to New England.  The National Weather Service has indicated that a Moderate Risk of flash floods exists for the region from eastern South Carolina to eastern Pennsylvania.

Hurricane Jose Turns Back Toward U.S.

Hurricane Jose completed the long slow clockwise loop it made this week over the Atlantic Ocean and it turned back toward the U.S.  At 5:00 p.m. EDT on Friday the center of Hurricane Jose was located at latitude 27.1°N and longitude 70.3°W which put it about 640 miles (1025 km) southeast of Cape Hatteras, North Carolina.  Jose was moving toward the northwest at 10 m.p.h. (16 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 983 mb.

An eye appeared to be forming at the center of Hurricane Jose as the primary rainband wrapped around the eastern and northern portions of the developing eye.  The strongest winds were occurring in that rainband.  Additional bands of showers and thunderstorms were revolving around the eastern half of the circulation.  There were fewer showers and thunderstorms in the western half of the circulation.

Hurricane Jose is moving over the part of the Atlantic Ocean that the hurricane traversed several days ago.  So, Jose is moving over cooler water that it mixed to the surface when it moved over the area the first time.  Hurricane Jose will soon move northwest of its previous track and it will move over water where the Sea Surface Temperature is near 30°C.  The upper level winds will be weak and there will be little vertical wind shear.  Hurricane Jose will strengthen during the weekend and it could intensify rapidly once the eye and eyewall are fully formed.

After a few days of weak steering currents the large subtropical high pressure system over the Atlantic Ocean has started to steer Hurricane Jose toward the northwest.  A general northwesterly motion is forecast to continue for another 24 to 36 hours.  At that time Jose will reach the western end of the high and it will turn more toward the north.  On its anticipated track Hurricane Jose could be near the Outer Banks of North Carolina in two or three days.  It is still too early to know if the center of Hurricane Jose will move into the U.S.