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Tropical Storm Ida Intermediate Advisory Number 2A
NWS National Hurricane Center Miami FL AL092021
800 PM EDT Thu Aug 26 2021
...IDA FORECAST TO STRENGTHEN...
...TROPICAL STORM CONDITIONS EXPECTED IN THE CAYMAN ISLANDS
LATER TONIGHT AND ACROSS WESTERN CUBA ON FRIDAY...
SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
ABOUT 115 MI...185 KM SE OF GRAND CAYMAN
ABOUT 120 MI...195 KM W OF NEGRIL JAMAICA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Cayman Islands
* Cuban provinces of Matanzas, Mayabeque, Havana, Artemisa, Pinar
del Rio, and the Isle of Youth
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
Interests elsewhere in central and western Cuba, in the northern
Yucatan Peninsula, and along the northern U.S. Gulf coast should
monitor the progress of this system. Watches may be required for a
portion of the northern Gulf coast later tonight or Friday morning.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
At 800 PM EDT (0000 UTC), the center of Tropical Storm Ida was
located near latitude 18.0 North, longitude 80.1 West. The storm is
moving toward the northwest near 13 mph (20 km/h), and this general
motion should continue over the next few days. On the forecast
track, the center of Ida will pass near or over the Cayman Islands
tonight, the Isle of Youth and western Cuba Friday, and over the
southeastern and central Gulf of Mexico Friday night and Saturday.
The system is forecast to approach the U.S. northern Gulf coast on
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Steady strengthening is forecast during the next few days. Ida is
forecast to become a hurricane when it is near western Cuba with
additional strengthening expected while it moves over the Gulf of
Mexico. Ida could be near major hurricane strength when it
approaches the northern Gulf coast.
Tropical-storm-force winds extend outward up to 70 miles (110 km)
north of the center.
The estimated minimum central pressure based on Air Force Reserve
reconnaissance data is 1006 mb (29.71 inches).
HAZARDS AFFECTING LAND
Key messages for Tropical Storm Ida can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO
header WTNT44 KNHC, and on the web at
STORM SURGE: A dangerous storm surge will raise water levels by
as much as 2 to 4 feet above normal tide levels in areas of onshore
winds along the immediate coast of the Isle of Youth and near and to
the east of where the center crosses the coast of western Cuba.
Near the coast, the surge will be accompanied by large and
WIND: Tropical storm conditions are expected in the Cayman Islands
tonight, and are expected to reach the Isle of Youth and portions of
western Cuba in the warning area on Friday.
RAINFALL: Ida is expected to produce total rainfall accumulations
of 6 to 10 inches with maximum totals of 15 inches across Jamaica.
Rainfall totals of 8 to 12 inches with isolated maximum amounts of
20 inches are expected across the Cayman Islands and western Cuba,
including the Isle of Youth. These rainfall amounts may produce
life-threatening flash floods and mudslides.
Ida may begin to bring rainfall and potential flooding impacts to
the central Gulf Coast by early Sunday.
SURF: Swells generated by this system will affect Jamaica, the
Cayman Islands and Cuba tonight and Friday. These swells are likely
to cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
Next complete advisory at 1100 PM EDT.