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BULLETIN
TROPICAL STORM IDA ADVISORY NUMBER  12
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL102015
500 AM AST MON SEP 21 2015

...IDA STRENGTHENING OVER THE OPEN ATLANTIC...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...19.8N 47.3W
ABOUT 1035 MI...1670 KM E OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 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 Tropical Storm Ida was
located near latitude 19.8 North, longitude 47.3 West. Ida is moving
toward the north-northwest near 8 mph (13 km/h), and this general
motion accompanied by a decrease in forward speed is expected today.
A slow meandering motion is forecast to occur on Tuesday.

Maximum sustained winds have increased to near 50 mph (85 km/h) with
higher gusts. Additional strengthening is forecast during the next
day or so, followed by slight weakening on Wednesday.

Tropical-storm-force winds extend outward up to 175 miles (280 km)
from the center.

The estimated minimum central pressure is 1003 mb (29.62 inches).


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


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

$$
Forecaster Stewart

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