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8am Update: Hurricane Idalia takes a slight jog to the east.

BULLETIN

Hurricane Idalia Intermediate Advisory Number 11A

NWS National Hurricane Center Miami FL AL102023

700 AM CDT Tue Aug 29 2023

...NOAA HURRICANE HUNTERS FIND IDALIA STRENGTHENING...

SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION

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

LOCATION...23.8N 84.8W

ABOUT 135 MI...215 KM WSW OF THE DRY TORTUGAS

ABOUT 320 MI...515 KM SSW OF TAMPA FLORIDA

MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H

PRESENT MOVEMENT...N OR 005 DEGREES AT 14 MPH...22 KM/H

MINIMUM CENTRAL PRESSURE...977 MB...28.85 INCHES

WATCHES AND WARNINGS

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

CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for...

* Englewood northward to Indian Pass, including Tampa Bay

A Hurricane Warning is in effect for...

* Cuban province of Pinar del Rio

* Middle of Longboat Key northward to Indian Pass, including Tampa

Bay

A Tropical Storm Warning is in effect for...

* Isle of Youth Cuba

* Dry Tortugas Florida

* Chokoloskee northward to the Middle of Longboat Key

* West of Indian Pass to Mexico Beach

* Sebastian Inlet, Florida to Altamaha Sound, Georgia

A Storm Surge Watch is in effect for...

* Chokoloskee northward to Englewood, including Charlotte Harbour

* Mouth of the St. Mary's River to South Santee River South

Carolina

A Hurricane Watch is in effect for...

* Englewood to the Middle of Longboat Key

A Tropical Storm Watch is in effect for...

* Lower Florida Keys west of the west end of the Seven Mile Bridge

* Altamaha Sound northward to South Santee River South Carolina

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 Warning means there is a danger of life-threatening

inundation, from rising water moving inland from the coastline,

during the next 36 hours in the indicated locations. For a

depiction of areas at risk, please see the National Weather

Service Storm Surge Watch/Warning Graphic, available at

hurricanes.gov. This is a life-threatening situation. Persons

located within these areas should take all necessary actions to

protect life and property from rising water and the potential for

other dangerous conditions. Promptly follow evacuation and other

instructions from local officials.

A Tropical Storm Warning means that tropical storm conditions are

expected somewhere within the warning area.

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 Watch means that tropical storm conditions are

possible within the watch area, generally within 48 hours.

Interests elsewhere along the southeastern U.S. coast should

monitor the progress of this system. Additional watches and

warnings along the southeast United States coast will likely be

required later today.

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 700 AM CDT (1200 UTC), the center of Hurricane Idalia was located

near latitude 23.8 North, longitude 84.8 West. Idalia is moving

toward the north near 14 mph (22 km/h). A northward motion is

expected today, followed by a faster north-northeast motion later

today and Wednesday. On the forecast track, the center of Idalia is

forecast to move over the eastern Gulf of Mexico today, reach the

Gulf coast of Florida within the Hurricane Warning area on

Wednesday, and move close to the Carolina coastline on Thursday.

Data from a NOAA Hurricane Hunter aircraft indicate that maximum

sustained winds have increased to near 80 mph (130 km/h) with higher

gusts. Rapid intensification is likely through landfall, and Idalia

is forecast to become an extremely dangerous major hurricane before

landfall on Wednesday.

Hurricane-force winds extend outward up to 15 miles (30 km) from

the center and tropical-storm-force winds extend outward up to 160

miles (260 km).

The minimum central pressure based on dropsonde data is 977 mb

(28.85 inches).


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