BULLETIN
Hurricane Irma Advisory Number 21
NWS National Hurricane Center Miami FL AL112017
1100 AM AST Mon Sep 04 2017

...HURRICANE WARNINGS ISSUED FOR PORTIONS OF THE LEEWARD ISLANDS...
...HURRICANE WATCHES ISSUED FOR THE BRITISH AND U.S. VIRGIN ISLANDS
AND PUERTO RICO...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...16.8N 53.3W
ABOUT 560 MI...905 KM E OF THE LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H
PRESENT MOVEMENT...WSW OR 255 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...944 MB...27.88 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The government of Antigua has issued a Hurricane Warning for the
islands of Antigua, Barbuda, Anguilla, Montserrat, St. Kitts, and
Nevis. A Hurricane Watch has been issued for the British Virgin
Islands.

The government of the Netherlands has issued a Hurricane Warning for
the islands of Saba, St. Eustatius, and Sint Maarten.

The government of France has issued a Hurricane Warning for St.
Martin and Saint Barthelemy. A Hurricane Watch has been issued for
Guadeloupe.

A Hurricane Watch has been issued for the U.S. Virgin Islands,
Puerto Rico, Vieques, and Culebra.

The government of Barbados has issued a Tropical Storm Watch for
Dominica.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...
* Antigua, Barbuda, Anguilla, Montserrat, St. Kitts, and Nevis
* Saba, St. Eustatius, and Sint Maarten
* Saint Martin and Saint Barthelemy

A Hurricane Watch is in effect for...
* Guadeloupe
* British Virgin Islands
* U.S. Virgin Islands
* Puerto Rico, Vieques, and Culebra

A Tropical Storm Watch is in effect for...
* Dominica

A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. A warning is typically issued
36 hours before the anticipated first occurrence of tropical-storm-
force winds, conditions that make outside preparations difficult or
dangerous. Preparations to protect life and property should be
rushed to completion.

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.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

Interests in the Dominican Republic, Haiti, the Turks and Caicos
Islands, and the southeastern Bahamas should monitor the progress of
Irma.