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BULLETIN
Tropical Storm Isaac Advisory Number  25
NWS National Hurricane Center Miami FL       AL092018
500 PM AST Thu Sep 13 2018

...ALL TROPICAL STORM WATCHES AND WARNINGS FOR ISAAC HAVE ENDED...
...HEAVY RAIN THREAT REMAINS...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...14.9N 63.2W
ABOUT 220 MI...355 KM SSE OF ST. CROIX
ABOUT 510 MI...815 KM ESE OF SANTO DOMINGO DOMINICAN REPUBLIC
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES


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

All watches and warnings have been discontinued for Isaac.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

None.

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


DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Isaac was
located near latitude 14.9 North, longitude 63.2 West. Isaac is
moving toward the west near 16 mph (26 km/h), and this general
motion with a decrease in forward speed is expected for the next
few days.  Isaac should move farther away from Lesser Antilles
today, and then move across the eastern and central Caribbean Sea
through the weekend.

Maximum sustained winds have decreased to near 40 mph (65 km/h) with
higher gusts.  Isaac is forecast to gradually weaken over the next
few days, and could degenerate into a tropical wave during that
time.

Tropical-storm-force winds extend outward up to 105 miles (165 km)
from the center.

The estimated minimum central pressure is 1006 mb (29.71 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Tropical Storm Isaac is expected to produce total
rainfall accumulations of 2 to 4 inches with isolated amounts up to
8 to 10 inches over Dominica.  Rainfall amounts of 2 to 4 inches
with isolated amounts up to 6 inches over elevated terrain are
forecast across Martinique and Guadeloupe.  Rainfall totals of 2 to
4 inches are forecast across southeastern Puerto Rico, while totals
of 1 to 2 inches with maximum amounts of 3 inches are possible
across the remainder of Puerto Rico and the U.S. Virgin Islands.
This rainfall may cause dangerous flash flooding.

SURF:  Swells generated by Isaac are affecting portions of the
Lesser Antilles.  These swells are likely to cause life-threatening
surf and rip current conditions.  Please consult products from your
local weather office.


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

$$
Forecaster Blake

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