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Hurricane Fiona Intermediate Advisory Number 24A
NWS National Hurricane Center Miami FL AL072022
800 AM EDT Tue Sep 20 2022
...MAJOR HURRICANE FIONA BRINGING HURRICANE CONDITIONS TO THE
TURKS AND CAICOS...
SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
ABOUT 10 MI...15 KM NW OF GRAND TURK ISLAND
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* Turks and Caicos
A Tropical Storm Warning is in effect for...
* Southeastern Bahamas, including the Acklins, Crooked Island, Long
Cay, the Inaguas, Mayaguana, and the Ragged Islands
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. Preparations to protect life
and property should be nearing completion.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
Interests in Bermuda should monitor the progress of Fiona.
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 Fiona was located
by an Air Force Hurricane Hunter aircraft near latitude 21.6 North,
longitude 71.2 West. Fiona is moving toward the north-northwest
near 10 mph (17 km/h). This general motion is expected to continue
through today, followed by a turn toward the north tonight or
Wednesday. On the forecast track, the center of Fiona will continue
to move near Grand Turk and the other eastern Turks and Caicos
during the next few hours.
Maximum sustained winds remain near 115 mph (185 km/h) with higher
gusts. Fiona is a category 3 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Strengthening is forecast during the next
couple of days.
Hurricane-force winds extend outward up to 30 miles (45 km) from
the center and tropical-storm-force winds extend outward up to 150
miles (240 km).
The estimated minimum central pressure from Air Force Reserve and
NOAA Hurricane Hunter data is 960 mb (28.35 inches).
HAZARDS AFFECTING LAND
Key messages for Hurricane Fiona can be found in the Tropical
Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header
WTNT42 KNHC and on the web at hurricanes.gov/text/MIATCDAT2.shtml.
WIND: Hurricane conditions are occurring over the Turks and Caicos
at this time, and these conditions should persist through this
Tropical storm conditions should be spreading over portions of
the southeastern Bahamas through this morning.
RAINFALL: Fiona is forecast to produce the following rainfall:
British and U.S. Virgin Islands: Additional local 1 to 2 inches over
the next 24 hours.
Southern Puerto Rico: Additional local 1 to 4 inches over the next
24 hours. Storm Total 12 to 20 inches with local maximum of 35
Northern Puerto Rico: Additional local 1 to 2 inches over the next
24 hours. Storm Total 4 to 12 inches with local maximum of 20
Dominican Republic: Additional 1 to 4 inches with local maximum of 6
inches over the next 24 hours. Storm Total up to 20 inches in the
Turks and Caicos: Additional 4 to 8 inches.
Southeast Bahamas: 1 to 4 inches.
Heavy rainfall and localized life-threatening flash flooding
continues over portions of the Dominican Republic today. Heavy rains
around the center of Fiona impacts the Turks and Caicos through this
afternoon with continued life-threatening flooding. Localized
additional flash and urban flooding is possible in southern portions
of Puerto Rico.
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.
Storm surge could raise water levels by as much as 5 to 8 feet above
normal tide levels along the immediate coast in areas of onshore
winds in the Turks and Caicos through today.
Localized coastal flooding is possible for the Southeastern Bahamas
in areas of onshore winds through today.
SURF: Swells generated by Fiona are affecting the Virgin Islands,
Puerto Rico, the northern coast of Hispaniola, the Turks and Caicos
Islands, and the southeastern Bahamas. These swells will continue
to spread westward across the southwestern Atlantic toward the
central and northwestern Bahamas and the east coast of the United
States through midweek. The swells could cause life-threatening
surf and rip current conditions. Please consult products from your
local weather office.
Next complete advisory at 1100 AM EDT.