000
AXPZ20 KNHC 252135
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT OCT 25 2008

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 
2100 UTC.

...ITCZ...

THE ITCZ AXIS IS CENTERED ALONG 10N83W TO 08N100W TO 12N110W TO 
11N120W TO 12N132W TO 09N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION IS LOCATED FROM 11N TO 14N BETWEEN 127W AND 
132W.  

...DISCUSSION...

W OF 120W...
A LARGE AND WELL-DEFINED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION 
IS CENTERED NEAR 30N140W AND IS FORECAST TO MOVE NE OVER THE 
NEXT 48 HOURS. CYCLONIC FLOW EXTENDS OUTWARD UP TO 600 NM FROM 
THE CIRCULATION CENTER IN ALL QUADRANTS. FURTHER S WESTERLY FLOW 
ALOFT IS LOCATED FROM 13N TO 20N W OF 120W WITH SATELLITE CLOUD 
DRIFT WINDS INDICATING SPEEDS AS HIGH AS 50 KT. OVER THE DEEP 
TROPICS S OF 13N TO THE EQUATOR W OF 120W WINDS ALOFT ARE 
EASTERLY. A BROAD MIDDLE/UPPER LEVEL RIDGE AXIS IS LOCATED ALONG 
125W N OF 20N. AT THE SURFACE A TROUGH IS LOCATED ALONG 132W 
FROM 09N TO 16N. MOST OF THE CONVECTION IS LOCATED E OF THE 
TROUGH AXIS AND IS TIED TO THE ITCZ. 

E OF 120W...
A MIDDLE/UPPER LEVEL TROUGH AXIS IS LOCATED ALONG 112W N OF 13N 
WITH CYCLONIC FLOW LOCATED W OF THE AXIS TO NEAR 120W AND E OF 
THE AXIS INTO CENTRAL MEXICO. A SMALL MIDDLE/UPPER LEVEL 
CYCLONIC CIRCULATION IS LOCATED IN THE SOUTHERN GULF OF 
CALIFORNIA NEAR 24N110W AND IS NEARLY STATIONARY. OVER THE E 
PART OF THE DISCUSSION AREA WINDS ALOFT ARE EASTERLY TO 
SOUTHEASTERLY AND ARE ASSOCIATED WITH A LARGE ANTICYCLONIC 
CIRCULATION LOCATED OVER THE NW CARIBBEAN. WINDS ARE STRONGEST 
OFF THE COAST OF COLOMBIA. AT THE SURFACE THE REMNANTS OF 
TROPICAL DEPRESSION 17-E ARE LOCATED NEAR 17N110W AND ANALYZED 
AS A 1013 MB LOW. NORTH TO NE WINDS 20 TO 25 KT COVER THE GULF 
OF TEHUANTEPEC AND ARE FORECAST TO INCREASE TO 25 TO 30 KT IN 48 
HOURS.

$$
CAB