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TROPICAL DEPRESSION NINE ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092016
1000 AM CDT WED AUG 31 2016
...DEPRESSION NEARLY STATIONARY BUT SHOULD RESUME HEADING FOR THE
FLORIDA GULF COAST TODAY...
...EXPECTED TO STRENGTHEN...
SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION
ABOUT 395 MI...640 KM SSW OF APALACHICOLA FLORIDA
ABOUT 415 MI...665 KM WSW OF TAMPA FLORIDA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
A Tropical Storm Watch has been issued for the United States
Atlantic coast from Marineland Florida to Altamaha Sound Georgia.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Watch is in effect for...
* Anclote River to Indian Pass
A Tropical Storm Warning is in effect for...
* Anclote River to the Walton/Bay County line
A Tropical Storm Watch is in effect for...
* Marineland Florida to Altamaha Sound Georgia
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 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.
Interests along the United States east coast from Georgia through
the Carolinas should monitor the progress of this system.
For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.
DISCUSSION AND 48-HOUR OUTLOOK
At 1000 AM CDT (1500 UTC), the center of Tropical Depression Nine
was located near latitude 24.6 North, longitude 88.0 West. The
depression is currently nearly stationary. A north-northeastward
motion is expected to begin later today, and a turn toward the
northeast with increasing forward speed is expected on Thursday. On
the forecast track, the center of the tropical cyclone will approach
the northwest Florida coast in the warning area on Thursday
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Strengthening is forecast during the next 48 hours, and the
depression is expected to become a tropical storm later today, and
it could be near hurricane strength by the time landfall occurs.
The estimated minimum central pressure is 1001 mb (29.56 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected to first reach the
coast within the warning area on Thursday afternoon. Hurricane
conditions are possible over portions of the hurricane watch area
beginning Thursday afternoon. Tropical storm conditions are
possible in the tropical storm watch area by early Friday.
STORM SURGE: The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline. There is a danger
of life-threatening inundation within the next 36 to 48 hours along
the Gulf coast of Florida from Aripeka to Indian Pass. For a
depiction of areas at risk, please see the Prototype National
Weather Service Storm Surge Watch/Warning Graphic. Persons located
within these areas should take all necessary actions to protect life
and property from rising water. Promptly follow any instructions,
including evacuation orders, from local officials.
The water could reach the following heights above ground if the
peak surge occurs at the time of high tide...
Indian Pass to Ochlockonee River...2 to 4 feet
Ochlockonee River to Chassahowitzka...3 to 5 feet
Chassahowitzka to Aripeka...2 to 4 feet.
Aripeka to Bonita Beach...including Tampa Bay...1 to 2 feet
The Prototype National Weather Service Storm Surge Watch/Warning
Graphic is a depiction of areas that would qualify for inclusion
under a storm surge watch or warning currently under development by
the National Weather Service and planned for operational use in
2017. This prototype graphic is available at
RAINFALL: The depression is expected to produce additional rain
accumulations of 2 to 4 inches over western Cuba through today, with
maximum storm total amounts up to 20 inches. These rains could
cause life-threatening flash floods and mud slides. Storm total
rainfall amounts of 5 to 10 inches are possible over portions of
central and northern Florida through Friday, with isolated maximum
amounts of 15 inches possible. Coastal areas of Georgia and the
Carolinas are expected to receive storm total rainfall of 4 to 7
inches, with local amounts of 10 inches possible through Saturday
morning. These rains may cause flooding and flash flooding.
TORNADOES: Isolated tornadoes are possible late tonight into
Thursday morning mainly across central Florida. A few tornadoes are
possible Thursday afternoon into Thursday night over north Florida
and southeast Georgia.
Next intermediate advisory at 100 PM CDT.
Next complete advisory at 400 PM CDT.