8am update on Hurricane Isaias

BULLETIN

Hurricane Isaias Intermediate Advisory Number 13A

NWS National Hurricane Center Miami FL AL092020

800 AM EDT Fri Jul 31 2020

...STRONG WINDS AND HEAVY SQUALLS LASHING THE SOUTHEASTERN BAHAMAS

AND THE TURKS AND CAICOS ISLANDS...

...HURRICANE CONDITIONS EXPECTED TODAY OVER PORTIONS OF THE

BAHAMAS...

SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION

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LOCATION...21.3N 73.9W

ABOUT 30 MI...50 KM NW OF GREAT INAGUA ISLAND

ABOUT 340 MI...545 KM SE OF NASSAU

MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H

PRESENT MOVEMENT...NW OR 305 DEGREES AT 17 MPH...28 KM/H

MINIMUM CENTRAL PRESSURE...990 MB...29.24 INCHES

WATCHES AND WARNINGS

--------------------

CHANGES WITH THIS ADVISORY:

The Tropical Storm Warning for Haiti has been discontinued.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...

* Northwestern Bahamas including Andros Island, New Providence,

Eleuthera, Abacos Islands, Berry Islands, Grand Bahamas Island, and

Bimini

* Southeastern Bahamas including the Acklins, Crooked Island, Long

Cay, the Inaguas, Mayaguana, and the Ragged Islands

* Central Bahamas, including Cat Island, the Exumas, Long Island,

Rum Cay, and San Salvador

A Tropical Storm Warning is in effect for...

* Dominican Republic entire southern and northern coastlines

* Turks and Caicos Islands

A Tropical Storm Watch is in effect for...

* East coast of Florida from Ocean Reef to Sebastian Inlet

* Lake Okeechobee

Interests elsewhere along the southeast coast of the United

States should monitor the progress of this system. Additional

watches or warnings may be required for a portion of the Florida

peninsula later today. The Tropical Storm Warning for the

Dominican Republic will likely be discontinued later this morning.

A Hurricane Warning means that hurricane conditions are expected

somewhere within the warning area. Preparations to protect life

and property should be rushed to completion.

A Tropical Storm Warning means that tropical storm conditions are

expected somewhere within the warning area within 36 hours.

A Tropical Storm Watch means that tropical storm conditions are

possible within the watch area, generally within 48 hours.

For storm information specific to your area in the United

States, including possible inland watches and warnings, please

monitor products issued by your local National Weather Service

forecast office. For storm information specific to your area

outside of the United States, please monitor products issued by

your national meteorological service.

DISCUSSION AND OUTLOOK

----------------------

At 800 AM EDT (1200 UTC), the center of Hurricane Isaias was located

by NOAA and Air Force Reserve Hurricane Hunter aircraft near

latitude 21.3 North, longitude 73.9 West. Isaias is moving toward

the northwest near 17 mph (28 km/h), and a generally northwestward

motion with some decrease in forward speed is expected for the next

couple of days followed by a turn toward the north-northwest. On

the forecast track, the center of Isaias will move near or over the

Southeastern Bahamas today. Isaias is forecast to be near the

Central Bahamas tonight, and move near or over the Northwestern

Bahamas and be near or east of the Florida peninsula on Saturday and

Sunday.

Maximum sustained winds are near 80 mph (130 km/h) with higher

gusts. Some strengthening is possible today, and Isaias is expected

to remain a hurricane for the next few days.

Hurricane-force winds extend outward up to 45 miles (75 km) from

the center and tropical-storm-force winds extend outward up to 205

miles (335 km). A private weather observing site at Long Bay Beach

in Providenciales recently reported a sustained wind of 55 mph (86

km/h) and a gust to 59 mph (95 km/h).

Reports from the reconnaissance aircraft indicate that the minimum

central pressure is 990 mb (29.24 inches).


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