Hurricane Ian Advisory Number 13
NWS National Hurricane Center Miami FL AL092022
500 AM EDT Mon Sep 26 2022
...IAN BECOMES A HURRICANE AND ADDITIONAL RAPID STRENGTHENING IS
EXPECTED TODAY...
...EXPECTED TO PRODUCE SIGNIFICANT WIND AND STORM SURGE IMPACTS
IN WESTERN CUBA...
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...18.2N 82.0W
ABOUT 90 MI...150 KM SW OF GRAND CAYMAN
ABOUT 315 MI...510 KM SE OF THE WESTERN TIP OF CUBA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...983 MB...29.03 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
A Hurricane Watch has been issued along the west coast of Florida
from north of Englewood to the Anclote River, including Tampa Bay.
The Storm Surge Watch has been extended northward along the west
coast of Florida to the Anclote River.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* Grand Cayman
* Cuban provinces of Isla de Juventud, Pinar del Rio, and Artemisa
A Tropical Storm Warning is in effect for...
* Cuban provinces of La Habana, Mayabeque, and Matanzas
* Lower Florida Keys from Seven Mile Bridge westward to Key West
* Dry Tortugas
A Storm Surge Watch is in effect for...
* Florida Keys from the Card Sound Bridge westward to Key West
* Dry Tortugas
* Florida Bay
* Anclote River southward to the Card Sound Bridge,
* Tampa Bay
A Hurricane Watch is in effect for...
* Englewood to the Anclote River, including Tampa Bay
A Tropical Storm Watch is in effect for...
* Little Cayman and Cayman Brac
* Englewood southward to Chokoloskee
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within 24 to
36 hours. Preparations to protect life and property should be
rushed to completion.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
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 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 Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
Interests in central Cuba, the remainder of the Florida Keys, and
the Florida peninsula should monitor the progress of Ian.
Additional watches may be need later today farther north along the
west coast of Florida.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Hurricane Ian was located
near latitude 18.2 North, longitude 82.0 West. Ian is moving toward
the northwest near 14 mph (22 km/h). A turn toward the
north-northwest is expected today followed by a northward
motion on Tuesday with a slightly slower forward speed. A turn
toward the north-northeast is forecast on Tuesday night or early
Wednesday. On the forecast track, the center of Ian is expected
to pass near or west of the Cayman Islands today, and near or
over western Cuba tonight and early Tuesday. Ian will then
emerge over the southeastern Gulf of Mexico on Tuesday, and pass
west of the Florida Keys late Tuesday, and approach the west coast
of Florida on Wednesday.
Maximum sustained winds have increased to near 75 mph (120 km/h)
with higher gusts. Rapid strengthening is expected during the next
day or so, and Ian is forecast to become a major hurricane tonight
when it is near western Cuba.
Hurricane-force winds extend outward up to 15 miles (30 km) from the
center and tropical-storm-force winds extend outward up to 90 miles
(150 km).
The latest minimum central pressure estimated from Air Force
Reserve reconnaissance aircraft data is 983 mb (29.03 inches).
HAZARDS AFFECTING LAND
----------------------
Key messages for Ian can be found in the Tropical Cyclone Discussion
under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC and on the
web at hurricanes.gov/text/MIATCDAT4.shtml.
STORM SURGE: The combination of 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...
*Anclote River to Englewood, FL including Tampa Bay... 5-8 ft
*Englewood to Bonita Beach, FL including Charlotte Harbor... 4-7 ft
*Bonita Beach to East Cape Sable, FL... 3-5 ft
*East Cape Sable to Card Sound Bridge, FL including Florida Bay...
2-4 ft
*Florida Keys including the Dry Tortugas... 2-4 ft
The deepest water will occur along the immediate coast near and to
the right of the center, where the surge will be accompanied by
large 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 could raise water levels by as much as 9 to 14 feet
above normal tide levels along the coast of western Cuba in areas
of onshore winds in the hurricane warning area Monday night
and early Tuesday.
Storm surge could raise water levels by as much as 2 to 4 feet above
normal tide levels along the immediate coast in areas of onshore
winds in the Cayman Islands Sunday night into Monday.
WIND: Tropical storm and hurricane conditions are expected on Grand
Cayman today. Hurricane conditions are expected within the warning
area in Cuba tonight, with tropical storm conditions expected
by late today.
Tropical storm conditions are expected within the tropical storm
warning area in Cuba Monday night and Tuesday. Tropical storm
conditions are possible on Little Cayman and Cayman Brac today.
Tropical storm conditions are expected in the warning area in the
lower Florida Keys on Tuesday. Tropical storm conditions are
possible within the watch area along the Florida west coast by
Tuesday evening. Hurricane conditions are possible along the
Florida West coast within the Hurricane Watch area on Wednesday,
with tropical storm conditions possibly beginning by Tuesday
night.
RAINFALL: Ian is expected to produce the following rainfall through
Thursday:
Cayman Islands: 3 to 6 inches, with local maxima up to 8 inches.
Western Cuba: 6 to 10 inches, with local maxima up to 16 inches.
Florida Keys: 4 to 6 inches.
Central West Florida: 8 to 10 inches, with local maxima up to 15
inches.
Remainder of the Florida Peninsula: 3 to 8 inches.
Heavy rainfall is expected to affect North Florida, eastern portions
of the Florida Panhandle, and portions of the Southeast, and Mid
Atlantic regions Friday and Saturday.
These rains may produce flash flooding and mudslides in areas of
higher terrain over western Cuba. Considerable flooding impacts are
possible mid-to-late week in central Florida given already saturated
antecedent conditions, and flash and urban flooding is possible with
rainfall across the Florida Keys and the Florida peninsula through
mid week. Limited flood impacts and rises on area streams and rivers
are possible over northern Florida and portions of the Southeast
mid-to-late week.
TORNADOES: A few tornadoes are possible late Monday night and
Tuesday across the Florida Keys and the southern and central
Florida Peninsula.