000
AXPZ20 KNHC 240858
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN SEP 24 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0845 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE...7N78W 5N90W 10N110W 11N125W 
9N140W. SCATTERED MODERATE TO STRONG N OF 5N TO THE COAST OF 
PANAMA E OF 83W. SCATTERED MODERATE WITHIN 120 NM OF THE AXIS 
BETWEEN 130W AND 137W. 

TROPICAL LOW...
LOW PRES 1009 MB NEAR 16N107W DRIFTING SW. SHORTWAVE INFRARED 
SATELLITE IMAGERY INDICATES THE LOW PRES CONSISTS OF ONLY A 
SWIRL OF LOW CLOUDS. UPPER-LEVEL SHEARING EASTERLY WINDS ARE NOT 
CONDUCIVE FOR DEVELOPMENT.

...DISCUSSION...
W OF 110W...
8-10 DEG DIAMETER CYCLONIC CIRCULATION CENTER NEAR 31N126W 
IS DRIFTING NE. ASSOCIATED TROUGH COVERS THE AREA N OF 
20N W OF 120W. A BELT OF VERY STRONG SUBSIDENCE/DRY AIR ALOFT 
IS WITHIN 90-120 NM EITHER SIDE OF A LINE THROUGH 24N131W 
26N124W 30N121W. ANOTHER WEAK SHORTWAVE TROUGH ENTERING THE 
DISCUSSION AREA N OF 23N ALONG 140W WAS REINFORCING THE BROAD 
TROUGH NOTED ABOVE. DIFFLUENT ANTICYCLONIC FLOW PREVAILED OVER 
THE DEEP TROPICS AND DESPITE ABUNDANT MID TO UPPER LEVEL 
MOISTURE THERE WAS LIMITED CONVECTION NOTED ALONG THE ITCZ IN 
THIS AREA. AT THE SURFACE A 1010 MB LOW WAS NEAR 32N127W AND 
DRIFTING WWD 5-10 KT. ELSEWHERE WEAK RIDGING PREVAILED N OF 
12N W OF 110W. 
 
E OF 110W...
LARGE ANTICYCLONE CENTERED NEAR 24N101W DOMINATED THE FLOW OVER
MEXICO...CENTRAL AMERICA...THE PACIFIC E OF 110W AND THE W GULF 
OF MEXICO. MODERATE MID TO UPPER LEVEL EASTERLY FLOW PREVAILED S 
OF THE ANTICYCLONE OVER THE TROPICAL EAST PACIFIC IN AN AREA 
CHARACTERIZED BY MODERATE DRY AIR ALOFT. MODERATE TO STRONG 
CONVECTION WAS LIMITED TO THE FAR E PACIFIC NEAR THE COAST OF 
PANAMA AND WITHIN 60-90 NM OF THE COAST OF MEXICO NEAR ACAPULCO. 

$$
COBB