Hurricane Maria Advisory Number 19

NWS National Hurricane Center Miami FL AL152017
500 PM AST Wed Sep 20 2017

…CATASTROPHIC FLASH FLOODING OCCURRING OVER PORTIONS OF PUERTO
RICO…
…CONDITIONS NOW DETERIORATING OVER EASTERN DOMINICAN REPUBLIC…

SUMMARY OF 500 PM AST…2100 UTC…INFORMATION
———————————————-
LOCATION…18.8N 67.3W
ABOUT 25 MI…45 KM NNW OF AGUADILLA PUERTO RICO
ABOUT 75 MI…120 KM E OF PUNTA CANA DOMINICAN REPUBLIC
MAXIMUM SUSTAINED WINDS…110 MPH…175 KM/H
PRESENT MOVEMENT…NW OR 305 DEGREES AT 12 MPH…19 KM/H
MINIMUM CENTRAL PRESSURE…957 MB…28.26 INCHES

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WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

The Hurricane Warning for the U.S. Virgin Islands has been
discontinued.

The government of Antigua and Barbuda has discontinued the
Hurricane Warning for the British Virgin Islands.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for…
* Puerto Rico, Culebra, and Vieques
* Dominican Republic from Cabo Engano to Puerto Plata
* Turks and Caicos Islands and the Southeastern Bahamas

A Tropical Storm Warning is in effect for…
* Dominican Republic west of Puerto Plata to the northern border of
the Dominican Republic and Haiti
* Dominican Republic west of Cabo Engano to Punta Palenque

A Hurricane Watch is in effect for…
* Dominican Republic from Isla Saona to Cabo Engano

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 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.

Interests elsewhere in Hispaniola and the Bahamas should monitor the
progress of Maria.

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
the United States, please monitor products issued by your national
meteorological service.

DISCUSSION AND 48-HOUR OUTLOOK
——————————
At 500 PM AST (2100 UTC), the eye of Hurricane Maria was located
near latitude 18.8 North, longitude 67.3 West. Maria is moving
toward the northwest near 12 mph (19 km/h), and this general motion
with a decrease in forward speed is expected through Thursday night.
A turn toward the north-northwest is forecast on Friday. On the
forecast track, the center of Maria will continue to move away from
the northwestern coast of Puerto Rico this evening. The center will
then pass offshore of the northeastern coast of the Dominican
Republic tonight and Thursday and then move near the Turks and
Caicos Islands and southeastern Bahamas Thursday night and Friday.

Data from an Air Force Reserve Hurricane Hunter aircraft indicate
that maximum sustained winds are near 110 mph (175 km/h) with higher
gusts. Some strengthening is forecast during the next day or two,
and Maria could regain major hurricane status by Thursday.

Hurricane-force winds extend outward up to 60 miles (95 km) from the
center, and tropical-storm-force winds extend outward up to 150
miles (240 km).

The minimum central pressure based on data from the Air Force
aircraft is 957 mb (28.26 inches).

Source: The Daily Herald https://www.thedailyherald.sx/islands/69547-hurricane-maria-advisory-number-19

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