000
AXPZ20 KNHC 150908
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI DEC 15 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...

THE ITCZ AXIS IS CENTERED ALONG 4N77W 7N90W 5N110W 8N130W 7N140W.
NO SIGNIFICANT CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL TROUGH EXTENDS FROM SOUTHERN TEXAS AND NE MEXICO 
ACROSS THE SOUTHERN BAJA PENINSULA INTO THE PACIFIC NEAR 
18N128W. MODERATE TO STRONG SUBSIDENCE AND RUSLTING DRY AIR AT 
THE MID AND UPPER LEVELS OF THE ATMOSPHERE IS N OF THE TROUGH TO 
30N. AN UPPER LEVEL RIDGE IS BUILDING W OF THE TROUGH WITH AXIS 
FROM 32N120W TO 20N136W. SUBTROPICAL JET S OF THE TROUGH FROM 
18N115W THROUGH CENTRAL MEXICO...WITH UPPER WINDS OF 95-105 KT. 
A 300 NM BAND OF CIRRUS CLOUDS IS S OF THE JET AXIS. AN UPPER 
LEVEL ANTICYCLONIC CIRCULATION IS ALONG THE OVER EL SALVADOR 
WITH RIDGE EXTENDING W TO NEAR 8N106W.

COLD FRONT IS APPROACHING THE FAR NW PORTION OF THE AREA FROM 
32N135W TO 30N140W. SURFACE TROUGH IS ANALYZED ALONG THE ITCZ
FROM 10N91W TO 3N94W. AREA OF LOW CLOUDS ARE ASSOCIATED WITH THE 
TROUGH BUT NO DEEP CONVECTION. BROKEN TO OVERCAST STRATUS AND 
STRATOCUMULUS CLOUDS COVER THE ARE N OF 15N W OF 116W.


$$
DGS