Tropical Storm HELENE

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BULLETIN
TROPICAL STORM HELENE ADVISORY NUMBER  11
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL072012
400 AM CDT SAT AUG 18 2012
 
...HELENE VERY NEAR THE COAST OF MEXICO...EXPECTED TO MAKE LANDFALL
LATER TODAY...
 
 
SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION
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LOCATION...21.6N 97.0W
ABOUT 70 MI...115 KM SE OF TAMPICO MEXICO
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NW OR 315 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* THE COAST OF MEXICO FROM BARRA DE NAUTLA TO LA CRUZ
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING 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 AM CDT...0900 UTC...THE CENTER OF TROPICAL STORM HELENE WAS
LOCATED NEAR LATITUDE 21.6 NORTH...LONGITUDE 97.0 WEST. HELENE IS
MOVING TOWARD THE NORTHWEST NEAR 7 MPH...11 KM/H...AND THIS GENERAL
MOTION IS EXPECTED TO CONTINUE FOR THE NEXT DAY OR SO. ON THE
FORECAST TRACK...THE CENTER OF HELENE WILL MOVE INLAND IN THE
WARNING AREA LATER TODAY.
 
MAXIMUM SUSTAINED WINDS REMAIN NEAR 40 MPH...65 KM/H...WITH HIGHER
GUSTS.  LITTLE CHANGE IN STRENGTH IS EXPECTED BEFORE LANDFALL.
WEAKENING IS ANTICIPATED AFTER THE STORM MOVES INLAND.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 35 MILES...55 KM
FROM THE CENTER.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1007 MB...29.74 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE
COAST WITHIN THE WARNING AREA LATER THIS MORNING.
 
RAINFALL...HELENE IS EXPECTED TO PRODUCE TOTAL RAINFALL
ACCUMULATIONS OF 4 TO 8 INCHES ACROSS NORTHEASTERN PORTIONS OF
MEXICO INCLUDING NORTHERN VERACRUZ...SOUTHERN TAMAULIPAS...AND
EASTERN SAN LUIS STATES. THESE RAINS COULD PRODUCE LIFE-THREATENING
FLASH FLOODS AND MUD SLIDES OVER HIGHER ELEVATIONS.
 
STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 1
TO 2 FEET ABOVE NORMAL TIDE LEVELS ALONG THE IMMEDIATE COAST NEAR
AND TO THE NORTH OF WHERE THE CENTER MAKES LANDFALL.
 
 
NEXT ADVISORY
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NEXT INTERMEDIATE ADVISORY...700 AM CDT.
NEXT COMPLETE ADVISORY...1000 AM CDT.
 
$$
FORECASTER CANGIALOSI/BEVEN
 
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