000
AXPZ20 KNHC 230926
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU AUG 23 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 
0900 UTC.

...TROPICAL WAVES...
TROPICAL WAVE ALONG 118 FROM 4N TO 16N MOVING W 10-15 KT. ONLY A 
FEW SHOWERS ARE NOTED ALONG THE WAVE.

...ITCZ...
ITCZ AXIS IS ALONG 7N78W 14N100W 4N125W 6N140W. SCATTERED 
MODERATE TO STRONG CONVECTION N OF 10N BETWEEN 87W-100W. 

...DISCUSSION...
AN UPPER LEVEL CYCLONIC CIRCULATION W OF THE AREA NEAR 20N143W 
WITH TROUGH EXTENDING NE TO 24N138W. OTHERWISE AN UPPER LEVEL
ANTICYCLONE IS CENTERED NEAR 31N120W WITH ANTICYCLONIC FLOW 
DOMINATING THE DISCUSSION AREA N OF 24N W OF THE BAJA PENINSULA.
THE MID/UPPER LEVELS OF THE ATMOSPHERE ARE DRY S OF 23N W OF 120W
EXCEPT FOR A FEW ISOLATED SHOWERS ALONG THE ITCZ.

AN INVERTED TROUGH EXTENDS FROM SW NEW MEXICO ACROSS SOUTHERN 
BAJA CALIFORNIA TO 20N112W. A FEW TSTMS HAVE DEVELOPED ALONG THE 
TROUGH FROM NW MEXICO TO THE GULF OF CALIFORNIA. AN UPPER LEVEL
ANTICYCLONE IS CENTERED OVER NORTHERN MEXICO NEAR THE BIG BEND 
OF TEXAS. ELY FLOW S OF THE ANTICYCLONE IS ADVECTING ABUNDANT
MOISTURE FROM THE REMNANTS OF HURRICANE DEAN INTO THE PACIFIC 
COAST OF MEXICO.

SURFACE RIDGE COVERS THE AREA N OF 18N W OF 117W. A 1002 MB LOW 
PRES...REMNANTS OF HURRICANE DEAN...IS OVER MEXICO W OF MEXICO 
CITY NEAR 19N102W. SCATTERED TO NUMEROUS MODERATE/STRONG 
CONVECTION IS FROM 15N-22N BETWEEN 99W-107W.

$$
DGS