000
AXPZ20 KNHC 230325
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU AUG 23 2007

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.

...TROPICAL WAVES...

TROPICAL WAVE IS OVER COLOMBIA ALONG 79W AND IS MOVING W AT 18 
KT. ONLY SCATTERED MODERATE ISOLATED STRONG CONVECTION HAS MOVED 
OFF THE COLOMBIAN COAST N OF 3N.

TROPICAL WAVE IS ALONG 116W FROM 3N TO 17N MOVING W AT 12 KT. 
ONLY A FEW SHOWERS ARE NOTED ALONG THE WAVE AT 7N.

...ITCZ...

ITCZ AXIS IS ALONG 13N88W 10N109W 13N115W 6N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION IS NOTED N OF 5N E OF 105W. 

...DISCUSSION...

AN UPPER ANTICYCLONE IS CENTERED NEAR 31N116W WITH ITS ENVELOPE 
OF ANTICYCLONIC FLOW DOMINATING THE DISCUSSION AREA N OF 17N 
BETWEEN 109W AND 123W.

THE CYCLONIC FLOW ASSOCIATED WITH AN UPPER CYCLONE AT 19N143W 
DOMINATES THE UPPER LEVELS OF THE DISCUSSION AREA FROM 12N TO 
24N W OF 134W. 

THE UPPER LEVELS ARE DRY S OF 23N W OF 120W AND APPEAR TO BE A 
LITTLE MOIST N OF 23N W OF THE BAJA PENINSULA. 

THE UPPER LEVEL FLOW IS NE OVER THE AREA E OF LINE 18N103W 
1N124W WITH SOME OF THE UPPER DEBRIS MOISTURE FROM THE 
DISSIPATING CYCLONE DEAN NOW ADVECTED S...AND AS FAR S AS 3S. 
SOME OF THE UPPER MOISTURE FROM DEAN IS ALSO ADVECTED N ACROSS 
TEXAS AND OKLAHOMA TURNING EASTWARD OVER ARKANSAS. CONVECTION 
HAS MOVED OFF THE COAST OF MEXICO FROM 98W TO 106W. 

A SURFACE RIDGE COVERS THE AREA N OF 15N W OF 117W.

$$
NELSON