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Days since last H. Landfall - US: Any 9 (Helene) , Major: 9 (Helene) Florida - Any: 9 (Helene) Major: 9 (Helene)
31.3N 49.3W
Wind: 115MPH
Pres: 951mb
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Wind: 80MPH
Pres: 985mb
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22.9N 95.1W
Wind: 45MPH
Pres: 1005mb
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#1149790 (Received by flhurricane at: 4:59 AM 28.Aug.2023)
TCPAT5

BULLETIN
Tropical Storm Idalia Advisory Number 7
NWS National Hurricane Center Miami FL AL102023
400 AM CDT Mon Aug 28 2023

...IDALIA INTENSIFYING AS IT APPROACHES CUBA...
...LIFE-THREATENING STORM SURGE AND DANGEROUS WINDS BECOMING
INCREASINGLY LIKELY FOR PORTIONS OF FLORIDA...


SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...20.1N 85.2W
ABOUT 125 MI...200 KM S OF THE WESTERN TIP OF CUBA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...989 MB...29.21 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...
* Pinar del Rio Cuba

A Tropical Storm Warning is in effect for...
* Yucatan Peninsula from Tulum to Rio Lagartos, including Cozumel
* Isle of Youth Cuba
* Dry Tortugas Florida

A Storm Surge Watch is in effect for...
* Chokoloskee to Indian Pass Florida, including Tampa Bay

A Hurricane Watch is in effect for...
* Englewood to Indian Pass Florida, including Tampa Bay

A Tropical Storm Watch is in effect for...
* South of Englewood to Chokoloskee Florida
* Lower Florida Keys west of the west end of the Seven Mile Bridge

A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next
12-24 hours. 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 Hurricane Watch means that hurricane conditions are possible
within the watch area.

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.

Interests along the southeastern U.S. coast should monitor the
progress of this system. Additional watches and warnings will
likely be required later this morning.

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 400 AM CDT (0900 UTC), the center of Tropical Storm Idalia was
located near latitude 20.1 North, longitude 85.2 West. Idalia is
moving toward the north near 7 mph (11 km/h), with a continued
northward motion bringing the center of Idalia near or over
western Cuba tonight and over the extreme southeastern Gulf of
Mexico by early Tuesday. On the forecast track, Idalia is forecast
to increase in forward speed and turn north-northeastward over the
eastern Gulf of Mexico on Tuesday and reach the Gulf coast of
Florida on Wednesday.

Maximum sustained winds have increased to near 65 mph (100 km/h)
with higher gusts. Idalia is forecast to become a hurricane later
today and a dangerous major hurricane over northeastern Gulf of
Mexico by early Wednesday.

Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center.

The estimated minimum central pressure is 989 mb (29.21 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Idalia can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT5 and WMO header WTNT45 KNHC,
and on the web at hurricanes.gov/text/MIATCDAT5.shtml

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. The water could
reach the following heights above ground somewhere in the indicated
areas if the peak surge occurs at the time of high tide...

Aucilla River, FL to Chassahowitzka, FL...7-11 ft
Chassahowitzka, FL to Anclote River, FL...6-9 ft
Ochlockonee River, FL to Aucilla River, FL...4-7 ft
Anclote River, FL to Middle of Longboat Key, FL...4-7 ft
Tampa Bay...4-7 ft
Middle of Longboat Key, FL to Englewood, FL...3-5 ft
Englewood, FL to Chokoloskee, FL...2-4 ft
Charlotte Harbor...2-4 ft
Indian Pass, FL to Ochlockonee River, FL...2-4 ft
Chokoloskee, FL to East Cape Sable, FL...1-3 ft
Florida Keys...1-2 ft

The deepest water will occur along the immediate coast in areas of
onshore winds, where the surge will be accompanied by large and
dangerous waves. Surge-related flooding depends on the relative
timing of the surge and the tidal cycle, and can vary greatly over
short distances. For information specific to your area, please see
products issued by your local National Weather Service forecast
office.

Storm surge will raise water levels by as much as 4 to 6 feet above
normal tide levels along the southern coast of Pinar del Rio, Cuba.
Near the coast, the surge will be accompanied by large waves.

WIND: Hurricane conditions are expected within the hurricane
warning area in western Cuba later today. Winds are expected to
first reach tropical storm strength by this morning, making
outside preparations difficult or dangerous. Preparations to
protect life and property should be rushed to completion.

Tropical storm conditions are expected over portions of the
tropical storm warning area over the Yucatan Peninsula and the Isle
of Youth in Cuba through today

Hurricane conditions are possible within the hurricane watch area by
late Tuesday or Wednesday, with tropical storm conditions possible
by Tuesday.

Tropical storm conditions are possible in the Dry Tortugas beginning
late today and within the tropical storm watch area along the
Florida Gulf coast on Tuesday.

RAINFALL: Idalia is expected to produce the following rainfall
amounts:

Portions of the eastern Yucatan: Additional 1 to 2 inches.

Western Cuba: 4 to 7 inches, with isolated higher totals of 10
inches.

Portions of the west coast of Florida, the Florida Panhandle,
southeast Georgia and the eastern Carolinas: 4 to 8 inches from
Tuesday into Thursday. Isolated higher totals of 12 inches possible,
primarily near landfall in northern Florida.

This rainfall may lead to flash and urban flooding, and landslides
across western Cuba.

Areas of flash and urban flooding, some of which may be locally
significant, are expected across portions of the west coast of
Florida, the Florida Panhandle, and southern Georgia Tuesday into
Wednesday, spreading into portions of the eastern Carolinas
Wednesday into Thursday.

SURF: Swells generated by Idalia are affecting portions of the
southern coast of Cuba and eastern Yucatan. These swells are
likely to cause life-threatening surf and rip current conditions.
Please consult products from your local weather office.


NEXT ADVISORY
-------------
Next intermediate advisory at 700 AM CDT.
Next complete advisory at 1000 AM CDT.

$$
Forecaster Blake