000
AXPZ20 KNHC 252128
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE SEP 25 2007

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.
  
...TROPICAL WAVES...

TROPICAL WAVE IS ALONG 93W N OF 7N INTO WESTERN GUATEMALA MOVING 
W 10 TO 15 KT.  THE WAVE IS VERY WEAK AND MINIMAL CONVECTION IS 
ASSOCIATED WITH IT.

TROPICAL WAVE IS ALONG 108W FROM 5N TO 15N MOVING W 10 KT.  A 
WEAK 1011 MB LOW IS ATTACHED TO THE WAVE NEAR 12N.  CONVECTION 
IS CONFINED TO THE ITCZ WITH WIDELY SCATTERED MODERATE FROM 10N 
TO 14N BETWEEN 108W AND 112W. 

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 9N80W 10N90W 12N100W 
12N108W 11N120W 11N130W 9N140W.  WIDELY SCATTERED MODERATE FROM 
10N TO 17N BETWEEN 95W AND 102W.  WIDELY SCATTERED MODERATE FROM 
10N TO 14N BETWEEN 108W AND 120W.  SCATTERED MODERATE FROM 15N 
TO 16N BETWEEN 122W AND 123W.

...DISCUSSION...

W OF 100W...
A MIDDLE/UPPER LEVEL TROUGH COVERS THE AREA N OF 20N W OF 125W 
WITH THE AXIS ALONG 131W. A JET EXTENDS FROM NEAR THE BASE OF 
THE TROUGH AT 15N130W TO 15N123W ACROSS THE N CENTRAL BAJA 
CALIFORNIA PENINSULA INTO NW MEXICO. SATELLITE CLOUD DRIFT WINDS 
ARE MEASURING 50 TO 60 KNOTS ALONG THE JET AXIS AND ARE 
STRONGEST FROM 10N TO 16N.  AN UPPER LEVEL HIGH IS CENTERED OVER 
MEXICO NEAR 26N106W.  ANTICYCLONIC FLOW ALOFT COVERS THE EASTERN 
PACIFIC FROM 15N TO 25N BETWEEN 108W AND 122W.  WATER VAPOR 
IMAGERY INDICATES CYCLONIC TURNING ALOFT ALONG THE MEXICAN COAST 
FROM 16N TO 20N CONTINUING OFFSHORE ABOUT 300 NAUTICAL MILES. ON 
THE SURFACE OF NOTE...A SURFACE TROUGH ASSOCIATED WITH THE 
REMNANTS OF TROPICAL DEPRESSION THIRTEEN EXTENDS FROM 15N134W TO 
22N133W.

E OF 100W...
THE FLOW AT THE MIDDLE/UPPER LEVELS ARE MOSTLY EASTERLY TO 
NORTHEASTERLY OVER THE DEEP TROPICS. CLOUD DRIFT WINDS ARE IN 
THE 25 TO 35 KNOT RANGE IN THIS AREA. 

$$
FORMOSA