000
AXPZ20 KNHC 301600
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT DEC 30 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 6N78W 8N104W 7N112W 6N125W 6N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED WITHIN 
A 90 NM RADIUS OF 6.5N115W...WITHIN A 60 NM RADIUS OF 5N124W... 
AND WITHIN 45 NM EITHER SIDE OF A 5.5N130W 6N134W LINE.

...DISCUSSION...

W OF 120W...
A MIDDLE/UPPER LEVEL RIDGE DOMINATES THE AREA W OF 120W FROM 
ABOUT 10N TO BEYOND 32N. A SUBTROPICAL JET EXTENDS THROUGH 
10N140W TO NEAR 16N130W. ESTIMATED WINDS ALONG THE JET AXIS ARE 
IN THE 60 TO 70 KNOT RANGE. A STRONG MIDDLE/UPPER LEVEL TROUGH 
IS APPROACHING THE NW PART OF THE DISCUSSION AREA FROM THE WEST. 
A JET EXTENDS FROM THE BASE OF THE TROUGH NEAR 20N148W TO BEYOND 
32N138W. 

E OF 120W...
A WELL-DEFINED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS 
LOCATED OVER EASTERN NEW MEXICO. A TROUGH AXIS EXTENDS FROM THE 
CIRCULATION SSW THROUGH SOUTHERN BAJA CALIFORNIA TO 15N115W WITH 
CYCLONIC FLOW COVERING THE AREA E OF 120W INTO MEXICO. WATER 
VAPOR IMAGERY INDICATES STRONG SUBSIDENCE FROM CENTRAL MEXICO 
WESTWARD INTO PACIFIC FROM 15N TO 22N E OF 120W.

$$
CAB