000
AXPZ20 KNHC 011607
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN JUL 1 2007

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1500 UTC.

...TROPICAL WAVES...
TROPICAL WAVE ALONG 98W N OF 7N MOVING W 10-15 KT.  SCATTERED 
MODERATE CONVECTION FROM 8N-10N WITHIN 90N NM OF WAVE AXIS.

TROPICAL WAVE ALONG 112W FROM 7N-16N MOVING W 10 KT.  SCATTERED 
MODERATE CONVECTION FROM 7N-16N WITHIN 180 NM W OF WAVE AXIS.

TROPICAL WAVE ALONG 129W FROM 6N-15N MOVING W 10 KT.  NO 
SIGNIFICANT CONVECTION. 

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS...9N84W  11N112W  9N120W 
11N130W  10N140W.  SCATTERED MODERATE ISOLATED STRONG CONVECTION 
WITHIN 150 NM S OF AXIS FROM 89W TO 115W.

...DISCUSSION...
WELL DEFINED DEEP LAYER CYCLONIC VORTEX OVER TEXAS HAS UPPER 
LEVEL TROUGH TO SECOND VORTEX AT 21N112W THEN TO 10N126W.  
CONVERGING AIR MASS WITH UPPER LEVEL RIDGE NEAR 25N128W CAUSES 
MODERATE TO STRONG SUBSIDENCE DRYING OUT MOST OF BASIN W OF 
120W.  LITTLE OR NO SIGNIFICANT WEATHER FEATURE DEVELOPING W OF 
120W. 

ABUNDANT TROPICAL MOISTURE ADVECTING NE ON E SIDE OF ABOVE 
MENTIONED TROUGH RIDING ON WEAK 45 KT JET CORE FLOWS INTO MEXICO 
AND WRN GULF OF MEXICO.  UPPER LEVEL RIDGE OVER WRN CARIBBEAN 
ALSO ENHANCING AMOUNT OF WATER ADVECTED INTO E PAC  AND CENTRAL 
AMERICA INCLUDING BAY OF CAMPECHE.

AT THE SURFACE...WEAK HIGH PRES CENTER 1022 MB AT 30N130W HAS 
RIDGE EXTEND TO 16N111W.  TIGHT GRADIENT ALONG CALIFORNIA COAST 
EXTEND SLIGHTLY S OF BORDER WITH BAJA CALIFORNIA PRODUCING MINOR 
SWELL TRAINS ENCROACHING TO 26N.  MODERATE CROSS-EQUATORIAL 
SWELLS CONTINUE S OF 10N W OF 100W.

$$
WALLY BARNES