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BULLETIN
TROPICAL STORM MARTY ADVISORY NUMBER  13
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP172015
400 PM CDT TUE SEP 29 2015

...MARTY DRIFTING ERRATICALLY OFFSHORE OF SOUTH-CENTRAL MEXICO...


SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...16.3N 101.2W
ABOUT 100 MI...160 KM SSE OF ZIHUATANEJO MEXICO
ABOUT 95 MI...155 KM WSW OF ACAPULCO MEXICO
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...N OR 0 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Acapulco to Lazaro Cardenas

A Tropical Storm Watch is in effect for...
* West of Lazaro Cardenas to Punta San Telmo

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
12-24 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within the next
24 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 400 PM CDT (2100 UTC), the center of Tropical Storm Marty was
located near latitude 16.3 North, longitude 101.2 West. Marty is
currently drifting toward the north.  A turn toward the
west-northwest is expected tonight, and this general motion is
likely to continue on Wednesday and Wednesday night with some
increase in forward speed.   On the forecast track, the center of
Marty is forecast to be near but just offshore of the southwestern
coast of Mexico this afternoon through Wednesday.

Maximum sustained winds have decreased to near 50 mph (85 km/h) with
higher gusts.  Some additional weakening is forecast during the next
48 hours, and Marty could weaken to a depression Wednesday or
Wednesday night.

Tropical-storm-force winds extend outward up to 80 miles (130 km)
from the center.

The estimated minimum central pressure is 999 mb (29.50 inches).


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are expected within the tropical
storm warning area this afternoon and tonight.  Tropical storm
conditions are possible within the watch area by tonight.

RAINFALL:  Marty is expected to produce rainfall amounts of 5 to 10
inches over the Mexican state of Guerrero through Thursday. Isolated
amounts of 15 inches are possible in Guerrero from the Sierra Madre
del Sur mountains toward the coast.  These rains are expected to
produce life-threatening flash floods and mud slides, especially in
areas of mountainous terrain.

STORM SURGE:  A storm surge is expected to produce coastal flooding
in areas of onshore flow.  The surge will be accompanied by large
and destructive waves.

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


NEXT ADVISORY
-------------
Next intermediate advisory at 700 PM CDT.
Next complete advisory at 1000 PM CDT.

$$
Forecaster Beven

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