000
AXPZ20 KNHC 091507
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON JUL 9 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 N OF 6N ALONG 86W MOVING W 10-15 KT. ISOLATED 
CONVECTION ALONG THE ITCZ.

TROPICAL WAVE FROM 11N116W TO A 1008 MB LOW PRES NEAR 17N118W TO 
11N129W MOVING NW 10-15 KT. SCATTERED MODERATE TO STRONG 
CONVECTION FROM 14N-20N BETWEEN 115W-118W.

...ITCZ...
AXIS IS CENTERED ALONG 9N83W 10N115W 12N121W 9N140W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 120 NM N OF AXIS FROM 98W 
TO 104W AND WITHIN 75 NM S OF AXIS FROM 107W TO 109W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 100 NM S OF AXIS FROM 
120W TO 135W.

SCATTERED STRONG CONVECTION  FROM 12N-16N BETWEEN 93W-97W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE COVERS THE W PORTION OF THE DISCUSSION
AREA N OF 20N W OF 130W. SOME UPPER LEVEL MOISTURE IS MOVING
THROUGH THE RIDGE N OF 25N W OF 130W...OTHERWISE SUBSIDENCE/DRY
AIR ALOFT COVERS THE AREA N OF THE ITCZ W OF 125W. AN UPPER
LEVEL TROUGH EXTENDS FROM A CYCLONIC CIRCULATION WELL N OF THE 
AREA TO 32N122W TO A WEAK CYCLONIC CIRCULATION NEAR 27N116W THE 
TROUGH CONTINUES TO THE SOUTHERN TIP OF THE BAJA PENINSULA. S OF 
THE TROUGH AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED 
NEAR 17N120W. UPPER LEVEL DIFFLUENCE ASSOCIATED WITH THE 
ANTICYCLONE IS ENHANCING CONVECTIVE ACTIVITY ASSOCIATED THE THE
TROPICAL WAVE AND SURFACE LOW DESCRIBED ABOVE. ANOTHER 
ANTICYCLONIC CIRCULATION IS CENTERED OVER MEXICO NEAR 26N106W.

SURFACE RIDGE EXTENDS FROM 32N130W TO THE COAST OF MEXICO NEAR
PUERTO VALLARTA. BROKEN TO OVERCAST STRATUS AND STRATOCUMULUS
COLDS ARE N OF 15N W OF 120W.

$$
DGS