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Tropical Storm Laura Intermediate Advisory Number 17A
NWS National Hurricane Center Miami FL AL132020
200 AM EDT Mon Aug 24 2020
...LAURA MOVING BACK OVER THE WARM WATERS OF THE CARIBBEAN SEA...
...HEAVY RAINFALL CONTINUES OVER EASTERN CUBA AND JAMAICA....
SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION
ABOUT 60 MI...100 KM S OF CAMAGUEY CUBA
ABOUT 235 MI...380 KM ESE OF CAYO LARGO CUBA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 21 MPH...33 KM/H
MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Little Cayman and Cayman Brac
* Cuban provinces of Camaguey, Las Tunas, Holguin, Guantanamo,
Santiago de Cuba, Granma, Ciego De Avila, Sancti Spiritus, Villa
Clara, Cienfuegos, Matanzas, Mayabeque, La Habana, Artemisa, Pinar
del Rio, and the Isle of Youth
* Dry Tortugas
A Tropical Storm Watch is in effect for...
* Florida Keys from Craig Key to Key West
The Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the
next 12 to 24 hours.
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within the next 24
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 200 AM EDT (0600 UTC), the center of Tropical Storm Laura was
located near latitude 20.5 North, longitude 78.0 West. Laura is
moving toward the west-northwest near 21 mph (33 km/h), and this
general motion with some decrease in forward speed is expected over
the next couple of days. A turn toward the northwest is forecast by
Wednesday. On the forecast track, the center of Laura will move
over the Caribbean Sea just offshore the southern coast of Cuba
today, and move into the southeastern Gulf of Mexico tonight and
Tuesday. Laura is then forecast to move over the central and
northwestern Gulf of Mexico Tuesday night and Wednesday.
Maximum sustained winds remain near 65 mph (100 km/h) with higher
gusts. Gradual strengthening is expected, and Laura is forecast to
become a hurricane by early Tuesday.
Tropical-storm-force winds extend outward up to 150 miles (240 km)
from the center.
The estimated minimum central pressure is 1000 mb (29.53 inches).
HAZARDS AFFECTING LAND
RAINFALL: Laura is expected to produce the following storm total
rainfall accumulations through Tuesday:
Western Haiti, Jamaica, and Cuba: 4 to 8 inches, with maximum
amounts of 12 inches.
Cayman Islands: 2 to 4 inches, maximum amounts of 6 inches.
Florida Keys, Turks and Caicos Islands, and the Northwest Bahamas:
1 to 2 inches.
Across the Greater Antilles this heavy rainfall could lead to
life-threatening flash and urban flooding, and the potential for
From late Wednesday into Friday, Laura is expected to produce
rainfall of 5 to 10 inches, with isolated maximum amounts of 15
inches across portions of the west-central U.S. Gulf Coast near the
Texas and Louisiana border north into portions of the lower
Mississippi Valley. This rainfall could cause widespread flash and
urban flooding, small streams and tributaries to overflow their
banks, and the possibility of some minor river flooding to this
WIND: Tropical storm conditions are expected to spread
westward within the warning area in Cuba through today.
Tropical storm conditions are expected in Little Cayman, Cayman
Brac, and the Dry Tortugas today. Tropical storm conditions
are possible within portions of the watch area in the Florida Keys
SURF: Swells generated by Laura are affecting portions of
Hispaniola, eastern Cuba, the southeastern Bahamas and the
Turks and Caicos Islands. These swells are expected to spread
across central and western Cuba, the central and northwestern
Bahamas, and the Florida Keys today. Please consult products
from your local weather office.
TORNADOES: An isolated tornado is possible across far southern
Next complete advisory at 500 AM EDT.