000
AXPZ20 KNHC 111026
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1045 UTC MON JUN 11 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0845 UTC.

...TROPICAL WAVES..
TROPICAL WAVE ALONG 83W MOVING W 10 KT.
SCATTERED MODERATE CONVECTION OVER PANAMA. 

TROPICAL WAVE ALONG 101W MOVING W 10 KT.
SCATTERED MODERATE CONVECTION E OF WAVE TO 98W FROM 6N TO 14N.

TROPICAL WAVE ALONG 110W WITH EMBEDDED 1005 MB LOW PRES CENTER 
AT 15N MOVING W 10 KT.  SCATTERED CONVECTION EXTENDS 120 NM N 
AND 90 NM S OF CENTER.

..ITCZ...
INTERTROPICAL CONVERGENCE ZONE...10N84W 11N101W 13N112W 9N113W 
7N128W 7N140W.  SCATTERED MODERATE WITHIN 120 NM S OF AXIS FROM 
87W TO 1O4W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTEND FROM 32N114W TO 12N120W.  VERY DRY AIR 
MASS N OF ITCZ TO 25N FROM 120W TO 133W.  ANTICYCLONIC 
CIRCULATION CENTER AT 32N135W BREAKS DRY SPELL BY ADVECTING 
MOISTURE ALOFT FROM THE NORTH INTO E PAC N OF 27N FROM 118W TO 
130W.  

BROAD ANTICYCLONE AT 26N100W CONTROLS FLOW ALOFT E OF 120W.  
SWATH OF MOIST TROPICAL AIR MASS EXPANDS FROM CONVECTIVE DEBRIS 
FROM LOW PRES AT 10N110W THROUGH MEXICO INTO WRN TEXAS.  NO 
SURFACE FEATURE OVER GULF OF MEXICO TO TURN ALL THIS MOISTURE 
INTO CONVECTION.  
  
SECOND UPPER LEVEL TROUGH EXTEND FROM YUCATAN PENINSULA ACROSS 
GUATEMALA INTO E PAC TO 11N95W STATIONARY.  GOOD DIFFLUENT FLOW 
SE OF TROUGH BASE ENHANCING CONVECTION E OF 97W IN ITCZ. 

SURFACE...HIGH PRES 1027 MB AT 33N142W HAS RIDGE EXTENDS TO  
13N103W.  HEALTHY N WINDS N OF 25N BETWEEN BAJA CALIFORNIA 
PENINSULA AND 120W EXPECTED TO WEAKEN BY END OF PERIOD. 

WINDS IN SRN SEMICIRCLE OF LOW PRES 1005 MB AT 15N110W REACH 
OVER 20 KT BUT WEAKEN BY END OF FORECAST PERIOD. 

$$
FORECASTER WALLY BARNES