000
AXPZ20 KNHC 050252
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
0405 UTC MON AUG 05 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...SPECIAL FEATURES... 
TROPICAL STORM HENRIETTE AT 12.0N 127.6W AT 0300 UTC WITH CENTRAL
PRES 1002 MB AND MAXIMUM SUSTAINED WIND 45 GUSTS TO 55 KT MOVING
W OR 260 DEGREES AT 7 KT.  NUMEROUS MODERATE TO STRONG CONVECTION
WITHIN 180 NM S AND 60 NM N SEMICIRCLES.  HENRIETTE FORECAST TO
INTENSIFY TO HURRICANE TUE AS SYSTEM MOVES W OVER WARM SEA 
SURFACE TEMPERATURES AND FAVORABLE UPPER ENVIRONMENT. SEE LATEST
NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTNT23
KNHC FOR ADDITIONAL DETAILS.

TROPICAL DEPRESSION GIL AT 14.0N 137.2W CONTINUES TO WEAKEN.  ITS
CENTRAL PRES IS 1007 MB AND MAXIMUM SUSTAINED WIND 30 GUSTS TO
40 KT MOVING W-SW OR 255 DEGREES AT 7 KT.  SURFACE TEMPERATURES
ARE DIMINISHING AND UPPER LEVEL SHEAR HAS INCREASED OVER GIL...
SO ITS DOOM IS REFLECTED IN FORECAST...TURNING IT INTO A REMNANT
LOW PRES BY LATE TUE.  SCATTERED MODERATE TO ISOLATED STRONG
CONVECTION WITHIN 60 NM NW SEMICIRCLE.  SEE LATEST NHC FORECAST/
ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP2/WTNT22 KNHC FOR 
ADDITIONAL DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
MONSOON TROUGH EXTENDS FROM 08N78W TO 08N92W TO 10N103W TO 
13N12119W TO 13N121W.  SCATTERED MODERATE ISOLATED STRONG
CONVECTION WITHIN 180 NM OF AXIS FROM 95W TO 122W.

...DISCUSSION... 
WELL DEFINED UPPER LEVEL CYCLONE AT 36N131W HAS TROUGH EXTENDING
INTO NW CORNER OF E PAC WITH VERY DRY AND STABLE AIR MASS N OF
24N W OF 116W.  ELONGATED RIDGE ALOFT WITH ANTICYCLONES OVER
TROPICAL DEPRESSION GIL AND TROPICAL STORM HENRIETTE EXTEND TO
113W. ABUNDANT TROPICAL MOISTURE AND WARM SEA SURFACE TEMPERATURE
STILL AVAILABLE FOR PLENTY OF CONVECTION UNDER RIDGE AND UPPER
LEVEL ENVIRONMENT LOOKS FAVORABLE...AT LEAST FOR HENRIETTE.   

...ELSEWHERE AT THE LOWER LEVELS...
WEAKENING HIGH PRES CENTER 1023 MB N OF AREA AT 36N146W MEANDERS
W WHILE ITS RIDGE EXTEND SE INTO BASIN TO 20N110W.  CONSEQUENTLY
TRADES HAVE DIMINISHED AND SEAS SUBSIDED BELOW 8 FT.  ONLY
CONDITIONS PRODUCED BY THE TROPICAL CYCLONES REMAIN AS THREATS. 

$$
WALLY BARNES