000
AXPZ20 KNHC 080905
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI DEC 08 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 
0900 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG...9N84W 5N105W 8N130W 6N140W. 
SCATTERED MODERATE TO STRONG CONVECTION WITHIN 120 NM S OF AXIS 
FROM 128W TO 130W AND WITHIN 60 NM N OF THE AXIS FROM 130W TO 
137W.

...DISCUSSION...
MID AND UPPER LEVEL TROUGH IS OVER THE NW PORTION OF THE AREA 
FROM 32N131W TO CYCLONIC CIRCULATION NEAR 17N139W. CLOUDINESS 
ASSOCIATED WITH THIS SYSTEM IS MOSTLY NORTH OF 32N. WITH DRY AND 
CLOUD FREE AIR OBSERVED S OF 32N WITHIN THE TROUGH. A STRONG 
COLD FRONT ASSOCIATED WITH THIS SYSTEM EXTENDS FROM 32N132W TO 
25N140W. ASSOCIATED GALE CONDITIONS ARE N OF 28N W OF THE FRONT 
AND N OF 28N WITHIN 180 NM E OF THE FRONT.

MID AND UPPER LEVEL TROUGH WITH EMBEDDED CYCLONIC CIRCULATION 
EXTENDS FROM 32N106W TO CYCLONIC CENTER OVER NW MEXICO NEAR 
27N109W AND CONTINUES TO 21N110W. E OF THE TROUGH AXIS MULTI 
LAYER CLOUDS OVER NORTHERN MEXICO N OF 21N. W OF THE AXIS TO 
125W IS AN AREA MODERATE TO STRONG SUBSIDENCE AND MOSTLY CLEAR 
SKIES. A MID TO UPPER LEVEL RIDGE SEPARATES THE TWO 
TROUGHS...WITH AXIS FROM 32N121W TO 22N124W.

AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS NEAR 11N114W WITH E 
TO W RIDGE FROM 15N126W THROUGH THE ANTICYCLONE TO NICARAGUA.

A 1021 MB SURFACE HIGH PRES IN CENTERED NEAR 26N126W WITH RIDGE 
TO 19N112W.

NE WINDS IN THE 25-35 KT RANGE OVER THE GULF OF TEHUANTEPEC 
ARE EXPECTED FOR THE NEXT 48 HOURS.

$$
DGS