Tag Archives: Prince Edward Island

Hurricane Dorian Makes Landfall at Cape Hatteras, Threatens Canadian Maritimes

Hurricane Dorian made an official landfall at Cape Hatteras, North Carolina on Friday morning and posed a serious threat to the Canadian Maritime provinces.  At 5:00 p.m. EDT on Friday the center of Hurricane Dorian was located at latitude 36.9°N and longitude 72.7°W which put it about 330 miles (530 km) south-southwest of Nantucket, Massachusetts.  Dorian was moving toward the northeast at 24 m.p.h. (39 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 surace pressure was 958 mb.

A Tropical Storm Warning was in effect for the portion of the coast from the North Carolina/Virginia border to Fenwick Island, Delaware, and for Chesapeake Bay south of Drum Point.  A Tropical Storm Warning was in effect for the portion of the coast from Woods Hole to Sagamore Beach, Massachusetts including Martha’s Vineyard and Nantucket.  A Tropical Storm Warning was in effect for the portion of the coast from Bar Harbor to Eastport, Maine.  A Hurricane Warning was in effect from Hubbards to Avonport, Nova Scotia.  A Hurricane Watch was issued for Prince Edward Island, Avonport to Hubbards, Nova Scotia, the Magdalen Islands, Parson’s Pond to Indian Harbour, Newfoundland.  Tropical Storm Warnings were issued for Prince Edward Island and from Avonport to Hubbards, Nova Scotia.  A Tropical Storm Watch was in effect for New Brunswick from Fundy National Park to Shediac.  A Tropical Storm Watch was issued for Newfoundland from Francois to Boat Harbor.  A Tropical Storm Watch was  issued for the portion of the coast from Parson’s Pond to Triton, and from Indian Harbour to Stone’s Cove, Newfoundland.

The National Hurricane Center determined that the center of Hurricane Dorian passed over Cape Hatteras and identified that as the point of landfall.  Hurricane Dorian has been moving rapidly away from the coast since that time.  Hurricane Dorian remained a large, well organized hurricane.  A circular eye with a diameter of 35 miles (55 km) was apparent on satellite images.  The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Winds to hurricane force extended out about 80 miles (130 km) from the center of circulation.  Winds to tropical storm force extended out about 230 miles (370 km) from the center.  The Hurricane Intensity Index (HII) for Hurricane Dorian was 13.9.  The Hurricane Size Index (HSI) was 23.3 and the Hurricane Wind Intensity Size Index (HWISI) was 43.2.

Hurricane Dorian will move through an environment favorable for intensification on Saturday.  Dorian will start out over water where the Sea Surface Temperature is near 27°C.  Dorian will move over cooler water later on Saturday.  An upper level trough over the eastern U.S. will contribute to upper level divergence, which may pump out enough mass to allow the surface pressure to decrease.  Hurricane Dorian will start to make a transition to an extratropical cyclone later on Saturday.  The interaction of colder and warmer air could also provide additional energy to the transitioning hurricane.  There is a chance that Hurricane Dorian could strengthen to a Category 2 hurricane on the Saffir-Simpson Scale on Saturday.

The upper level trough over the eastern U.S. will steer Hurricane Dorian rapidly toward the northeast during the weekend.  On its anticipated track, Dorian will pass southeast of Massachusetts on Saturday morning.  Hurricane Dorian could reach Nova Scotia by Saturday afternoon.  Dorian could be one of the strongest hurricanes to affect the Canadian Maritime provinces.  It will be capable of causing widespread serious damage.

Hurricane Dorian Brings Wind and Rain to the Carolinas

Hurricane Dorian brought wind and rain to the Carolinas on Thursday while the center move just off the coast.  At 11:00 p.m. EDT on Thursday the center of Hurricane Dorian was located at latitude 33.6°N and longitude 77.4°W which put it about 70 miles southwest of Cape Lookout, North Carolina.  Dorian was moving toward the northeast at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 100 m.p.h. (160 km/h) and there were wind gusts to 120 m.p.h. (195 km/h).  The minimum surface pressure was 958 mb.

A Hurricane Warning was in effect for the portion of the coast from Edisto Beach, South Carolina to the North Carolina/Virginia border including Albemarle and Pamlico Sounds. Tropical Storm Warnings were in effect for the portion of the coast from the North Carolina/Virginia border to Fenwick Island, Delaware, for Chesapeake Bay south of Drum Point and for the Tidal Potomac south of Cobb Island. A Tropical Storm Warning was in effect for the portion of the coast from Woods Hole to Sagamore Beach, Massachusetts including Martha’s Vineyard and Nantucket. A Hurricane Watch has been issued for all of Nova Scotia. Tropical Storm Watches have been issued for Prince Edward Island, for the Magdalen Islands and for New Brunswick from Fundy National Park to Shediac. A Tropical Storm Watch was issued for Newfoundland from Francois to Boat Harbor.

Hurricane Dorian weakened very slowly on Thursday while the center of circulation moved just off the coast.  The pressure remained nearly steady around 958 mb.  A circular eye with a diameter of 35 miles (55 km) was at the center of circulation.  A ring of thunderstorms surrounded the eye and the strongest winds were in that ring of storms.  Winds to hurricane force extended out about 60 miles (95 km) from the center of Hurricane Dorian.  Winds to tropical storm force extended out about 220 miles (330 km) from the center.

The core of Hurricane Dorian with the strongest winds remained over the Atlantic Ocean.  Numerous location along the coast of South Carolina and North Carolina reported winds to topical storm force.  Rainbands rotating around the northern half of Dorian dropped locally heavy rain over coastal areas of South Carolina and North Carolina.  Thunderstorms in some of the bands generated tornadoes and there were scattered reports of wind damage.  Hurricane Dorian caused a storm surge of 4 to 7 feet (1.3 to 2.3 meters) along the coast.

An upper level trough over the eastern U.S. began to steer Hurricane Dorian toward the northeast.  Dorian began to move faster later on Thursday.  The upper level trough will steer Hurricane Dorian rapidly toward the northeast during the next few days.  On its anticipated track Dorian will bring wind and rain to eastern North Carolina on Friday.  Dorian will also cause a storm surge along the coast.  Hurricane Dorian will pass southeast of New England on Friday night.  Dorian will bring wind and rain to the Canadian Maritime provinces and Newfoundland during the weekend.