000
AXPZ20 KNHC 052203
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
2205 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...SPECIAL FEATURES...                                     
TROPICAL STORM HENRIETTE AT 12.8N 129.0W AT 2100 UTC WITH 
MINIMUM CENTRAL PRES 996 MB AND MAXIMUM SUSTAINED WIND 55 GUSTS
TO 65 KT MOVING NW OR 295 DEGREES AT 8 KT.  NUMEROUS MODERATE TO
STRONG CONVECTION WITHIN 120 NM N AND 60 NM S SEMICIRCLES. 
HENRIETTE FORECAST TO INTENSIFY TO HURRICANE TUE AS SYSTEM MOVES
W OVER WARM SEA SURFACE TEMPERATURES AND FAVORABLE UPPER LEVEL
ENVIRONMENT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO
HEADERS MIATCMEP3/WTNT23 KNHC FOR ADDITIONAL DETAILS.

TROPICAL DEPRESSION GIL AT 13.2N 139.4W AT 2100 UTC WITH MINIMUM
CENTRAL PRES 1006 MB AND MAXIMUM SUSTAINED WIND 30 GUSTS TO 40 KT
MOVING W OR 2550 DEGREES AT 8 KT.  SCATTERED MODERATE TO STRONG
CONVECTION WITHIN 90 NM NE AND 60 NM SW SEMICIRCLES.  GIL
FORECAST TO MOVE W OF AREA TONIGHT AND WEAKEN TO REMNANT LOW TUE.
SEE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS
MIATCMEP2/WTNT22 KNHC FOR ADDITIONAL DETAILS. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
MONSOON TROUGH EXTENDS FROM 09N83W TO 08N89W TO 10N104W TO 
10N111W TO 15N120W.  SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WITHIN 210 NM N AND 180 NM S OF AXIS.

...DISCUSSION...
WELL DEFINED UPPER LEVEL CYCLONE AT 36N131W AND ITS ATTENDANT
TROUGH MAINTAIN DRY STABLE AIR MASS OVER NW PART OF BASIN N OF 20N
W OF 110W.  BROAD ANTICYCLONE CENTERED AT 14N126W HAS RIDGE EXTEND
TO 115W AND PROVIDE TROPICAL STORM HENRIETTE WITH GOOD OUTFLOW AND
ABUNDANT TROPICAL MOISTURE TO CONTINUE ITS CONVECTION CYCLE.
MOISTURE EXTENDS ALONG MONSOON TROUGH EASTWARD TO CENTRAL AMERICA.

SECOND UPPER LEVEL CYCLONE CROSSES THE EXTREME NW CORNER OF BASIN
AND LIFTS NE TUE ALLOWING RIDGE TO STRENGTHEN AND EXPAND IN 
COVERAGE THROUGH THU.  THIS MAY DIMINISH SHEARING WINDS ALOFT AND
FAVOR DEVELOPING SYSTEMS.

...ELSEWHERE IN THE LOWER LEVELS...
HIGH PRES CENTER 1026 MB NW OF AREA AT 35N146W HAS RIDGE EXTEND
SE INTO E PAC TO 20N110W.  REINFORCING UPPER RIDGE IS EXPECTED TO
MAINTAIN STABLE AIR MASS OVER LARGE PORTION OF E PAC MAINLY N OF 
18N W OF 110W. 

$$
WALLY BARNES