A Tropical Storm Watch alert has been issued for Coastal Chatham by NWS Charleston (the Southern end of South Carolina and Eastern Georgia)....TROPICAL STORM WATCH IN EFFECT... A Tropical Storm Watch means tropical storm-force winds are possible somewhere within this area within the next 48 hours * LOCATIONS AFFECTED - Savannah - Tybee Island - Ossabaw Island
A Tropical Storm Watch alert has been issued for Inland Chatham by NWS Charleston (the Southern end of South Carolina and Eastern Georgia)....TROPICAL STORM WATCH IN EFFECT... A Tropical Storm Watch means tropical storm-force winds are possible somewhere within this area within the next 48 hours * LOCATIONS AFFECTED - Savannah Airport - Hunter Army Airfield - Bloomingdale
Tropical Storm Isaias Advisory Number 19
NWS National Hurricane Center Miami FL AL092020
500 PM EDT Sat Aug 01 2020
...ISAIAS WEAKENS TO A TROPICAL STORM...
...EXPECTED TO RE-STRENGTHEN TO A HURRICANE OVERNIGHT WHILE IT
APPROACHES THE SOUTHEAST COAST OF FLORIDA...
SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...25.1N 78.7W
ABOUT 115 MI...185 KM SE OF FORT LAUDERDALE FLORIDA
ABOUT 95 MI...155 KM S OF FREEPORT GRAND BAHAMA ISLAND
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
The Tropical Storm Watch has been extended northward from Altamaha
Sound Georgia to South Santee River South Carolina.
The Hurricane Watch from Hallandale Beach to south of Boca Raton
Florida 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 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
* Volusia/Flagler County Line to Ponte Vedra Beach Florida
A Tropical Storm Watch is in effect for...
* North of Ponte Vedra Beach Florida to South Santee River South
Carolina
Interests elsewhere along the southeast and mid-Atlantic coasts of
the United States should monitor the progress of Isaias. Additional
watches or warnings may be required tonight or Sunday.
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 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.
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 Tropical Storm Isaias was
located by an Air Force Reserve reconnaissance aircraft near
latitude 25.1 North, longitude 78.7 West. Isaias is moving toward
the northwest near 10 mph (17 km/h). A general northwestward
motion with some decrease in forward speed is expected for the next
day or so, followed by a north-northwestward motion by late Sunday
and a turn toward the north and north- northeast on Monday and
Tuesday with an increase in forward speed. On the forecast track,
the center of Isaias will approach the southeast coast of Florida
tonight and move near or along the east coast of Florida Sunday and
Sunday night. On Monday and Tuesday, the center of Isaias will move
quickly from offshore of the coast of Georgia into the southern
mid-Atlantic states.
Maximum sustained winds have decreased to near 70 mph (110 km/h)
with higher gusts. Some restrengthening is forecast, and Isaias
is expected to regain hurricane strength tonight. Slow weakening is
expected to begin Sunday night and continue through Monday.
Tropical-storm-force winds extend outward up to 105 miles (165 km)
from the center. During hew past couple of hours, a Weatherflow
observing site at the Dania Pier in Broward County, Florida,
reported a wind gust to 59 mph (94 km/h) in an outer rainband. More
recently, a wind gust to 41 mph (67 km/h) was reported by a
Weatherflow site in Juno Beach, Florida.
The estimated minimum central pressure based on reconnaissance
aircraft data is 993 mb (29.33 inches).