000
AXPZ20 KNHC 032205
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
2205 UTC SAT AUG 03 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 GIL AT 15.3N 133.6W AT 2100 UTC MOVING W OR 275 
DEGREES AT 11 KT. ESTIMATED CENTRAL PRES 999 MB. MAXIMUM 
SUSTAINED WIND 50 GUSTS TO 60 KT.  NUMEROUS MODERATE TO STRONG 
CONVECTION IS FOUND WITHIN 75 NM NW AND 30 NM SE SEMICIRCLES. 
THE LATEST FORECAST IS FOR CONTINUED WEAKENING AS GIL MOVES 
WESTWARD INTO PROGRESSIVELY INCREASING SHEAR AND COOLER WATERS. 
SEE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP2/WTNT22 KNHC FOR ADDITIONAL DETAILS.

JUST E OF GIL...TROPICAL DEPRESSION EIGHT-E AT 12.9N 123.6W WITH
CENTRAL PRES 1009 MB AND MAXIMUM SUSTAINED WIND 25 GUSTS TO 35
KT.  NUMEROUS MODERATE TO STRONG CONVECTION WITHIN 120 NM SE AND
30 NM NW SEMICIRCLES.  SYSTEM MOVES W OR 260 DEGREES AT 8 KT AND
EXPECTED TO INTENSIFY TO TROPICAL STORM SUN. SEE LATEST NHC
FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTNT23 KNHC
FOR ADDITIONAL DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
MONSOON TROUGH EXTENDS FROM 09N84W TO 10N100W TO 12N120W. 
SCATTERED MODERATE CONVECTION WITHIN 120 NM S OF AXIS FROM 107W
TO 120W.

...DISCUSSION...
NE-SW UPPER LEVEL TROUGH TOUCHES EXTREME NW CORNER OF E PAC
BRINGING DRY AIR MASS INTO BASIN N OF 19N W OF 115W.  BROAD E-W 
RIDGE EXTENDS ALONG 14N-16N WITH ANTICYCLONES OVER T.S GIL AND 
T.D. EIGHT-E EXTENDS TO 110W.  SW FLOW OVER GIL EXPECTED TO
INCREASE MAKING ENVIRONMENT ALOFT MORE ADVERSE IN SPITE OF HAVING
THE BENEFIT OF 28 DEGREE SEA SURFACE TEMPERATURES. AS GIL WEAKENS
...TROPICAL DEPRESSION EIGHT-E IMPROVES ITS OUTFLOW ALOFT AND
INTENSIFIES TO TROPICAL STORM BY SUN.     
 
WEAKENING BROAD HIGH PRES CENTER 1025 MB N OF AREA AT 38N143W HAS
RIDGE EXTEND SE INTO AREA TO 20N109W.  PREVIOUSLY FRESH NE TRADES
HAVE DIMINISHED TO A MODERATE BREEZE AND SEAS ARE SUBSIDING TO 
LESS THAN 8 FT AS THEY MERGE WITH THE INCOMING SWELL FROM T.S.
GIL. 

$$ 
WALLY BARNES