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BULLETIN
Tropical Storm Isaac Advisory Number   9
NWS National Hurricane Center Miami FL       AL092018
500 PM AST Sun Sep 09 2018

...ISAAC ALMOST A HURRICANE...
...MOVING FASTER TOWARD THE WEST OVER THE TROPICAL ATLANTIC...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...14.5N 40.3W
ABOUT 1390 MI...2240 KM E OF THE WINDWARD ISLANDS
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


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

Interests in the Lesser Antilles should monitor the progress of
Isaac.


DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Isaac was
located near latitude 14.5 North, longitude 40.3 West.  Isaac is
moving toward the west near 12 mph (19 km/h) and is expected to
accelerate during the next 36 hours.  A westward motion is forecast
to continue through the end of the week, with Isaac expected to
move across the Lesser Antilles and into the eastern Caribbean Sea
Wednesday night or Thursday.

Maximum sustained winds have increased to near 70 mph (110 km/h)
with higher gusts.  Additional strengthening is forecast, and Isaac
is expected to become a hurricane tonight.  Weakening is anticipated
to begin by the middle of the week while Isaac approaches the
Lesser Antilles.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 997 mb (29.44 inches).


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


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

$$
Forecaster Berg

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