Tracking Hurricane Isaias

Rain will be our biggest impact and it depends on where you are, Tybee getting the most forecast at 2.67", some models up to 4". Urban and small stream flooding will be concerns during the high tides particularly. West of the Truman, much lower rain totals.

Hurricane Isaias Intermediate Advisory Number 17A

NWS National Hurricane Center Miami FL AL092020

800 AM EDT Sat Aug 01 2020

...RAGGED EYE OF ISAIAS NEAR EASTERN ANDROS ISLAND...

...EXPECTED TO APPROACH THE SOUTHEAST COAST OF FLORIDA LATER TODAY

AND SUNDAY...

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

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

LOCATION...24.3N 77.5W

ABOUT 20 MI...30 KM E OF ANDROS ISLAND BAHAMAS

ABOUT 50 MI...85 KM S OF NASSAU BAHAMAS

MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H

PRESENT MOVEMENT...NW OR 315 DEGREES AT 12 MPH...19 KM/H

MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES

WATCHES AND WARNINGS

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

CHANGES WITH THIS ADVISORY:

The Hurricane Warning for the Central Bahamas has been discontinued.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...

* Boca Raton to the Volusia/Flagler County Line Florida

* Northwestern Bahamas

A Hurricane Watch is in effect for...

* Hallandale Beach to south of Boca Raton Florida

A Storm Surge Watch is in effect for...

* Jupiter Inlet to Ponte Vedra Beach Florida

A Tropical Storm Warning is in effect for...

* North of Ocean Reef to south of Boca Raton Florida

* Lake Okeechobee

A Tropical Storm Watch is in effect for...

* Volusia/Flagler County Line to Ponte Vedra 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 today.

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

by NOAA and Air Force Reserve Hurricane Hunter aircraft and Bahamas

radar near latitude 24.3 North, longitude 77.5 West. Isaias is

moving toward the northwest near 12 mph (19 km/h). 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 move near or over Andros Island in the Northwestern

Bahamas this morning and continue to move near or over the rest of

Northwestern Bahamas later today, and move near the east coast of

the Florida peninsula tonight through Sunday.

Reports from the reconnaissance aircraft indicate that maximum

sustained winds remain near 85 mph (140 km/h) with higher gusts.

Little change in strength is expected through Sunday, and and

Isaias is forecast to remain a hurricane during this time.

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).

The minimum central pressure recently measured by the aircraft was

987 mb (29.15 inches).

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