000
AXPZ20 KNHC 041459
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1605 UTC SUN AUG 04 2013

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...SPECIAL FEATURES... 

AT 1500 UTC RECENTLY UPGRADED TROPICAL STORM HENRIETTE WAS 
CENTERED NEAR 12.9N 126.5W WITH CENTRAL PRES 1005 MB AND MAXIMUM 
SUSTAINED WIND 35 KT WITH GUSTS TO 45 KT MOVING W OR 270 DEGREES 
AT 8 KT. NUMEROUS MODERATE TO STRONG CONVECTION WAS NOTED WITHIN 
180 NM S AND 60 NM N SEMICIRCLES. HENRIETTE IS FORECAST TO 
INTENSIFY AS THE SYSTEM MOVES WESTWARD OVER THE NEXT COUPLE OF 
DAYS. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP3/WTNT23 KNHC FOR ADDITIONAL DETAILS.

AT 1500 UTC RECENTLY DOWNGRADED TROPICAL DEPRESSION GIL WAS 
CENTERED NEAR 14.3N 135.8W WITH CENTRAL PRES 1007 MB AND MAXIMUM 
SUSTAINED WIND 30 KT WITH GUSTS TO 40 KT MOVING WSW OR 250 
DEGREES AT 8 KT. SCATTERED MODERATE TO ISOLATED STRONG 
CONVECTION WAS NOTED WITHIN 60 NM NW SEMICIRCLE. GIL IS FORECAST 
TO CONTINUE TO WEAKEN INTO A REMNANT LOW BY MON MORNING. SEE 
LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP2/WTNT22 KNHC FOR ADDITIONAL DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
THE MONSOON TROUGH EXTENDS FROM 09N84W TO 08.5N89W TO 11N100W TO 
12N120W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION WAS 
NOTED WITHIN 90 NM OF AXIS BETWEEN 97W AND 110W. SCATTERED 
MODERATE TO ISOLATED ISOLATED STRONG CONVECTION WAS NOTED WITHIN 
180 NM S OF AXIS BETWEEN 115W TO 120W.

...DISCUSSION... 

HIGH PRESSURE IS CENTERED N OF THE AREA NEAR 37N135W WITH RIDGE 
EXTENDING SE INTO THE AREA EXTENDING TO NEAR 19N111W. THE 
MONSOON TROUGH BREAKDOWN OVER THE WESTERN HALF OF THE FORECAST 
AREA IS EVIDENT WITH TROPICAL DEPRESSION GIL AND NEWLY UPGRADED 
TROPICAL STORM HENRIETTE DISCUSSED ABOVE. THOSE SYSTEMS WILL BE 
THE MAJOR PLAYERS IN THE FORECAST OVER THE NEXT COUPLE OF DAYS 
AS WINDS AND SEAS ELSEWHERE OVER THE AREA WILL REMAIN BELOW 
ADVISORY CRITERIA.

$$
AL