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Azores #96L fails to complete transition into a Sub-Tropical Storm. Elsewhere, weak low pressure in Caribbean may linger into next week.
Days since last H. Landfall - US: Any 45 (Nate) , Major: 63 (Maria) Florida - Any: 73 (Irma) Major: 73 (Irma)
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#901315 (Received by flhurricane at: 4:53 PM 03.Sep.2017)
TCPAT1

BULLETIN
Hurricane Irma Advisory Number 18
NWS National Hurricane Center Miami FL AL112017
500 PM AST Sun Sep 03 2017

...HURRICANE WATCHES ISSUED FOR PORTIONS OF THE LEEWARD ISLANDS...
...NOAA HURRICANE HUNTER AIRCRAFT EN ROUTE TO IRMA...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...17.6N 49.8W
ABOUT 790 MI...1275 KM E OF THE LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H
PRESENT MOVEMENT...W OR 260 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...969 MB...28.62 INCHES


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

The government of Antigua has issued a Hurricane Watch for the
islands of Antigua, Barbuda, Anguilla, Montserrat, St. Kitts, and
Nevis.

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

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

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

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

Interests in the remainder of the Leeward Islands, the British and
U.S. Virgin Islands, and Puerto Rico should monitor the progress of
Irma. Additional Hurricane and Tropical Storm Watches may be
required for portions of this area on Monday.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 PM AST (2100 UTC), the center of Hurricane Irma was located
near latitude 17.6 North, longitude 49.8 West. Irma is moving toward
the west near 14 mph (22 km/h). A westward to west-southwestward
motion with some reduction in forward speed is expected through
Monday night. On the forecast track, the center of Irma is
forecast to approach the northern Leeward Islands late Tuesday.

Maximum sustained winds are near 115 mph (185 km/h) with higher
gusts. Irma is a category 3 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Some strengthening is forecast during the
next 48 hours.

Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 140 miles
(220 km).

The estimated minimum central pressure is 969 mb (28.62 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Hurricane conditions are possible within the watch area by
Tuesday night, with tropical storm conditions possible by late
Tuesday.


NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM AST.
Next complete advisory at 1100 PM AST.

$$
Forecaster Brown