000
AXPZ20 KNHC 231520
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU AUG 23 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 IS ALONG 81 N OF 3N MOVING W 10-15 KT. SCATTERED 
MODERATE CONVECTION IS OFF THE COAST OF COLOMBIA FROM 5N TO 7N 
BETWEEN 78W AND 80W. 

TROPICAL WAVE IS ALONG 119 FROM 4N TO 16N MOVING W 10-15 KT. 
ONLY A FEW SHOWERS ARE NOTED ALONG THE WAVE.

...ITCZ...
ITCZ AXIS IS ALONG 6N78W 8N90W 10N100W 12N119W 9N130W 11N140W. 
SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS FROM 8N TO 
14N BETWEEN 92W AND 97W.  CLUSTERS OF WIDELY SCATTERED MODERATE 
CONVECTION ARE FROM 8N TO 12N BETWEEN 99W AND 107W. SCATTERED 
MODERATE CONVECTION IS FROM 7N TO 10N BETWEEN 124W AND 126W.  

...DISCUSSION...
AN UPPER LEVEL CYCLONIC CIRCULATION W OF THE AREA NEAR 20N145W 
WITH TROUGH EXTENDING NE TO 24N138W. OTHERWISE AN UPPER LEVEL
ANTICYCLONE IS CENTERED NEAR 29N122W 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 SHOWERS REMAIN 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 120W. A 1004 MB LOW 
PRES...REMNANTS OF HURRICANE DEAN...IS OVER MEXICO NW OF 
MANZANILLO MEXICO NEAR 19N104W MOVING W AT 15 KT. SCATTERED 
MODERATE CONVECTION IS OVER THE EASTERN PACIFIC FROM 14N TO 17N 
BETWEEN 99W AND 108W.

$$
FORMOSA