000 AXPZ20 KNHC 302210 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 2205 UTC TUE JUL 30 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 FEATURE... TROPICAL STORM GIL JUST FORMED NEAR 12.7N 116.1W WITH MAXIMUM SUSTAINED WINDS OF 35 GUST TO 45 KT AND MOVING W-NW AT 13 KT. GIL EXPECTED TO SLOWLY INTENSIFY AS IT MOVES UNDER VERY FAVORABLE UPPER LEVEL CONDITIONS AND WARM SEA SURFACE TEMPERATURES. NUMEROUS MODERATE AND SCATTERED STRONG CONVECTION 150 NM NE QUADRANT AND WITHIN 60 NM ELSEWHERE NOTED AT PRESENT. SEE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP2/WTNT24 KNHC FOR MORE DETAILS. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... MONSOON TROUGH AXIS EXTENDS FROM 09N85W TO 10N96W TO 1011 MB LOW PRES AT 10N106W. ITCZ AXIS FROM 12N119W TO 13N134W TO 11N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION FROM 06N TO 10N BETWEEN 89W AND 94W AND WITHIN 150 NM N OF AXIS FROM 99W TO 102W. INCREASING SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 60 NM OF AXIS FROM 122W TO 126W. ...DISCUSSION... VERY LARGE UPPER LEVEL ANTICYCLONE OVER W TEXAS MAINTAINS STEADY EASTERLY FLOW N OF 20N E OF 120W. WEAK PERTURBATION IN ITS SW CORNER INTERRUPS FLOW AND ALLOWS DIMINISHED FLOW TO ENHANCE DEVELOPMENT OF NOW TROPICAL STORM GIL. WELL DEFINED CYCLONE ALOFT AT 14N102W ALSO DIMINISHES WINDS OVER WEAK 1011 MB LOW PRES AT 12N106W BUT OTHERWISE ENVIRONMENT DOES NOT FAVOR ITS INTENSIFICATION...VERY POSSIBLY DUE TO ITS NEARNESS TO T.S. GIL. HIGH PRES CENTER 1027 MB 34N142W PROVIDES STEADY FRESH NE TRADES WITH SEAS REACHING TO 8 FT FROM 13N TO 19N W OF 136W WITH LITTLE CHANGE THROUGH FORECAST PERIOD. $$ WALLY BARNES