Heavy Rain: Rounds of moderate to heavy rainfall are likely late
Thursday night through Saturday. Locally heavy rainfall could result
in flooding, especially in low-lying and poor drainage areas. However the National Weather Service says for our area the chance of flooding is less than 5%
Winds: Gusty winds, possibly to tropical storm force, are expected
to develop Wednesday night and persist through Friday night, and
possibly into Saturday.
Tornadoes: A few tornadoes will be possible Thursday night through Friday.
Heavy rainfall will increase across the Florida Keys and South
Florida Tuesday, spreading into central to northern Florida
Wednesday and Thursday, and the Southeast by Friday and Saturday,
likely causing flash, urban, and small stream flooding.
Considerable flooding is expected across Central Florida into
southern Georgia and coastal South Carolina, with significant,
prolonged river flooding expected across central to northern
Florida.
Hurricane Ian Intermediate Advisory Number 17A
NWS National Hurricane Center Miami FL AL092022
800 AM EDT Tue Sep 27 2022
...IAN BATTERING WESTERN CUBA WITH HIGH WINDS AND LIFE-THREATENING
STORM SURGE...
SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...22.6N 83.6W
ABOUT 10 MI...15 KM NNE OF THE CITY OF PINAR DEL RIO CUBA
ABOUT 130 MI...240 KM SSW OF THE DRY TORTUGAS
MAXIMUM SUSTAINED WINDS...125 MPH...205 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
None
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* Cuban provinces of Isla de Juventud, Pinar del Rio, and Artemisa
* Bonita Beach to the Anclote River, including Tampa Bay
* Dry Tortugas
A Storm Surge Warning is in effect for...
* Anclote River southward to Flamingo
* Tampa Bay
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
* Flamingo to Bonita Beach
* Suwannee River to the Anclote River
* Volusia/Brevard County Line south to Jupiter Inlet
* Lake Okeechobee
A Storm Surge Watch is in effect for...
* Florida Keys from the Card Sound Bridge westward to Key West
* Dry Tortugas
* Florida Bay
* Aucilla River to Anclote River
* Altamaha Sound to Flagler/Volusia County Line
* Saint Johns River
A Hurricane Watch is in effect for...
* North of Anclote River to the Suwannee River
A Tropical Storm Watch is in effect for...
* North of the Suwannee River to Indian Pass
* Altamaha Sound to Volusia/Brevard County line
* Deerfield Beach to Jupiter Inlet
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 Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
A Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline, 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 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 in central Cuba, the remainder of the Florida Keys, and
the Florida peninsula should monitor the progress of Ian.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
----------------------
At 800 AM EDT (1200 UTC), the center of Hurricane Ian was located by
NOAA Hurricane Hunter aircraft, Cuban and Key West radar data near
latitude 22.6 North, longitude 83.6 West. Ian is moving toward the
north near 12 mph (19 km/h), and this motion is expected to continue
today. A turn toward the north-northeast with a reduction in
forward speed is forecast tonight and Wednesday. On the forecast
track, the center of Ian is expected to emerge over the southeastern
Gulf of Mexico in a couple of hours, pass west of the Florida Keys
later today, and approach the west coast of Florida within the
hurricane warning area on Wednesday and Wednesday night.
Maximum sustained winds are estimated near 125 mph (205 km/h) with
higher gusts. Ian is a category 3 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Little change in strength is expected while
Ian moves over Cuba. Strengthening is expected later this morning
after Ian emerges over the southeastern Gulf of Mexico. Ian is
forecast to approach the west coast of Florida as a dangerous major
hurricane.
Hurricane-force winds extend outward up to 35 miles (55 km) from
the center and tropical-storm-force winds extend outward up to 115
miles (185 km).
The estimated minimum central pressure is 950 mb (28.05 inches)
based on NOAA Hurricane Hunter data.
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 Bonita Beach, FL including Tampa
Bay and Charlotte Harbor...5-10 ft
* Suwannee River to Anclote River... 5-8 ft
* Bonita Beach, FL to Chokoloskee, FL... 4-7 ft
* Chokoloskee, FL to East Cape Sable, FL...3-5 ft
* Flagler/Volusia County Line, FL to Altamaha Sound including
St. Johns River...2-4 ft
* East Cape Sable, FL to Card Sound Bridge, FL including Florida
Bay...2-4 ft
* Aucilla River to Suwannee River...2-4 ft
* Florida Keys including the Dry Tortugas...2-4 ft
* Indian Pass, FL to Aucilla River...1-3 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 early today.
WIND: Hurricane conditions are expected within the warning area in
Cuba through this morning. Destructive winds are expected where the
core of Ian moves across western Cuba. Tropical storm conditions
are expected within the tropical storm warning area in Cuba today.
Hurricane conditions are expected along the west coast of Florida
within the Hurricane Warning area on Wednesday morning, with
tropical storm conditions possibly beginning by late today. Tropical
storm conditions are expected in the Tropical Storm Warning area
along the southwest coast of the Florida peninsula by this evening,
and along the west coast north of the Tampa Bay area and along
portions of the east coast of Florida on Wednesday. Hurricane
conditions are possible in the watch area beginning on Wednesday,
and tropical storm conditions are possible in the Tropical Storm
Watch area on Wednesday into early Thursday.
Tropical storm conditions are expected in the warning area in the
lower and middle Florida Keys beginning later today.
RAINFALL: Ian is expected to produce the following rainfall through
Thursday night:
* Western Cuba: 6 to 12 inches, with isolated totals up to 16
inches. These rains may produce flash flooding and mudslides in
areas of higher terrain over western Cuba.
* Florida Keys and South Florida: 4 to 6 inches, with isolated
totals up to 8 inches
* Central West Florida: 12 to 16 inches, with isolated totals up to
24 inches.
* Northeast Florida and the remainder of the Central Florida
Peninsula: 5 to 10 inches, with isolated totals up to 12 inches.
Heavy rainfall is expected to affect the southeastern United States
Friday and Saturday.
Widespread considerable flash and urban flooding are expected
mid-to-late week across central and northern Florida, southern
Georgia, and coastal South Carolina, with significant, prolonged
river flooding expected across central to northern Florida. Flash
and urban flooding are also expected with rainfall across southern
Florida through mid week. Limited flash and river flooding is
expected over portions of the southeastern United States into the
Mid-Atlantic mid-to-late week.
TORNADOES: Tornadoes are possible today through Wednesday across
the Florida Keys and the southern and central Florida Peninsula.