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BULLETIN
TROPICAL STORM MARTY INTERMEDIATE ADVISORY NUMBER   4A
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP172015
100 PM CDT SUN SEP 27 2015

...MARTY MOVING SLOWLY TOWARD THE COAST OF MEXICO...


SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...15.0N 102.8W
ABOUT 235 MI...380 KM SW OF ACAPULCO MEXICO
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...NNE OR 15 DEGREES AT 6 MPH...9 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Watch is in effect for...
* Acapulco, Mexico to Lazaro Cardenas, Mexico

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 100 PM CDT (1800 UTC), the center of Tropical Storm Marty was
located near latitude 15.0 North, longitude 102.8 West. Marty is
moving toward the north-northeast near 6 mph (9 km/h).  A turn
toward the northeast and a decrease in forward speed are expected
tonight and Monday.  On the forecast track, the center of Marty
is forecast to approach but remain offshore the southwestern coast
of Mexico.

Maximum sustained winds are near 60 mph (95 km/h) with higher gusts.
Strengthening is expected during the next 24 hours, and could
become a hurricane by tonight.  Weakening is expected to begin
Monday night.

Tropical storm force winds extend outward up to 80 miles (130 km)
mainly to the east of the center.

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


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are possible within the watch
area by Monday night.

RAINFALL:  Marty is expected to produce rainfall amounts of 4 to 6
inches with isolated maximum amounts of up to 10 inches across the
Mexican state of Guerrero through Tuesday.  These rains are
expected to produce life-threatening flash floods and mudslides,
especially in areas of mountainous terrain.


NEXT ADVISORY
-------------
Next complete advisory at 400 PM CDT.

$$
Forecaster Beven

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