The latest path of Isaias moves more inland as a tropical storm

5pm Isaias

5pm Isaias

BULLETIN

Hurricane Isaias Advisory Number 15

NWS National Hurricane Center Miami FL AL092020

500 PM EDT Fri Jul 31 2020

...HURRICANE WARNING ISSUED FOR PORTIONS OF THE FLORIDA EAST

COAST...

...TROPICAL STORM CONDITIONS AND HEAVY RAINS CONTINUE TO SPREAD

ACROSS THE CENTRAL BAHAMAS...

SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION

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LOCATION...22.6N 75.7W

ABOUT 195 MI...320 KM SSE OF NASSAU

ABOUT 330 MI...535 KM SE OF FREEPORT GRAND BAHAMA ISLAND

MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H

PRESENT MOVEMENT...NW OR 305 DEGREES AT 15 MPH...24 KM/H

MINIMUM CENTRAL PRESSURE...991 MB...29.27 INCHES

WATCHES AND WARNINGS

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CHANGES WITH THIS ADVISORY:

A Hurricane Warning is in effect for the east coast of Florida from

Boca Raton to the Volusia/Brevard County Line.

A Hurricane Watch is in effect from the Volusia/Brevard County Line

to the Flagler/Volusia County Line and from south of Boca Raton to

Hallendale Beach.

A Storm Surge Watch is in effect for the east coast of Florida from

Jupiter Inlet to Ponte Vedre Beach.

A Tropical Storm Watch is in effect from the Flagler/Volusia County

Line to Ponte Vedre Beach.

A Tropical Storm Warning is in effect for Lake Okeechobee.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...

* Boca Raton to the Volusia/Brevard County Line Florida

* Northwestern Bahamas

* Southeastern Bahamas

* Central Bahamas

A Hurricane Watch is in effect for...

* Hallendale Beach to south of Boca Raton Florida

* Volusia-Brevard County Line to the Flagler/Volusia County Line

A Storm Surge Watch is in effect for...

* Jupiter Inlet to Ponte Vedre Beach Florida

A Tropical Storm Warning is in effect for...

* Turks and Caicos Islands

* North of Ocean Reef to south of Boca Raton Florida

* Lake Okeechobee

A Tropical Storm Watch is in effect for...

* Flagler/Volusia County Line to Ponte Vedre Beach Florida

Interests elsewhere along the southeast coast of the United States

should monitor the progress of Isaias. Additional watches or

warnings may be required later tonight and Saturday.

A Hurricane Warning means that hurricane conditions are expected

somewhere within the warning area. A warning is typically issued

36 hours before the anticipated first occurrence of

tropical-storm-force winds, conditions that make outside

preparations difficult or dangerous. Preparations to protect life

and property should be rushed to completion.

A Hurricane Watch means that hurricane conditions are possible

within the watch area. A watch is typically issued 48 hours

before the anticipated first occurrence of tropical-storm-force

winds, conditions that make outside preparations difficult or

dangerous.

A Storm Surge Watch means there is a possibility of life-

threatening inundation, from rising water moving inland from the

coastline, in the indicated locations during the next 48 hours.

For a depiction of areas at risk, please see the National Weather

Service Storm Surge Watch/Warning Graphic, available at

hurricanes.gov.

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 500 PM EDT (2100 UTC), the center of Hurricane Isaias was located

by satellite imagery and Bahamas radar data near latitude 22.6

North, longitude 75.7 West. Isaias is moving toward the northwest

near 15 mph (24 km/h), and a general northwestward motion with some

decrease in forward speed is expected for the next day or so,

followed by a turn toward the north-northwest by late Sunday. On

the forecast track, the center of Isaias will continue to move near

or over the Southeastern Bahamas this afternoon and evening. Isaias

is forecast to be near the Central Bahamas tonight, and move near or

over the Northwestern Bahamas Saturday and near the east coast of

the Florida peninsula Saturday afternoon through Sunday.

Maximum sustained winds are near 75 mph (120 km/h) with higher

gusts. Strengthening is expected later tonight and early Saturday,

and Isaias is forecast to remain a hurricane for the next couple of

days.

Hurricane-force winds extend outward up to 35 miles (55 km) from the

center and tropical-storm-force winds extend outward up to 175 miles

(280 km). A private weather observing station at Pitts Town Point,

Bahamas, recently reported a sustained wind of 37 mph (59 km/h).

The estimated minimum central pressure is 991 mb (29.27 inches).

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