000
AXPZ20 KNHC 290904
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI DEC 29 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...
AXIS 3N79W 9N95W 7N105W 6N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WITHIN 150 NM S OF AXIS FROM 121W TO 125W AND 
WITHIN 70 NM EITHER SIDE OF AXIS FROM 137W TO 140W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE COVERS THE DISCUSSION AREA N OF 20N W OF 
120W. THE RIDGE AXIS EXTENDS FROM 32N129W TO 20N130W. 
MODERATE TO STRONG SUBSIDENCE WITH DRY AIR AT THE MID AND UPPER 
LEVELS OF THE ATMOSPHERE IS FROM 20N TO 30N W OF 115W. DEEP 
UPPER LOW PRES OVER NEW MEXICO WITH TRAILING UPPER TROUGH OVER 
NORTHERN MEXICO INTO THE PACIFIC NEAR 15N11W. A 95-120 KT 
JETSTREAM IS ON W SIDE OF THE TROUGH AXIS...FROM THE NORTHERN 
BAJA CALIFORNIA TO WESTERN MEXICO NEAR 25N106W THE WEAKENS TO 
95-100 KT NE TO THE BIG BEND OF TEXAS. A SURFACE TROUGH IS 
ANALYZED ALONG THE ITCZ FROM 13N96W TO 4N101W. THE TROUGH 
REMAINS NEARLY STATIONARY WITH MODERATE TO STRONG CONVECTION 
WITHIN WITHIN 160 NM W OF THE AXIS N OF 9N. A 1027 MB SURFACE 
HIGH PRES IS CENTERED NEAR 32N130W WITH RIDGE FROM THE HIGH TO 
20N117W THEN E TO 17N98W.

$$
DGS