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BULLETIN
HURRICANE GASTON ADVISORY NUMBER  11
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL072016
500 AM AST THU AUG 25 2016

...GASTON EXPECTED TO WEAKEN BACK TO A TROPICAL STORM LATER TODAY...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...19.5N 43.3W
ABOUT 1225 MI...1970 KM E OF THE LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 AM AST (0900 UTC), the center of Hurricane Gaston was located
near latitude 19.5 North, longitude 43.3 West.  Gaston is moving
toward the northwest near 17 mph (28 km/h), and this general motion
is expected to continue through Friday.  A turn toward the
west-northwest is forecast Friday night.

Data from a NASA/NOAA Global Hawk unmanned aircraft indicate that
maximum sustained winds are near 75 mph (120 km/h) with higher
gusts.  Some weakening is forecast during the next day or so.

Hurricane-force winds extend outward up to 25 miles (35 km) from the
center, and tropical-storm-force winds extend outward up to 90 miles
(150 km).

The estimated minimum central pressure from the aircraft data is 988
mb (29.18 inches).


HAZARDS AFFECTING LAND
----------------------
None.


NEXT ADVISORY
-------------
Next complete advisory at 1100 AM AST.

$$
Forecaster Berg

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