000
AXPZ20 KNHC 290333
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT DEC 29 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.
 
...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...10N85W 6N100W 
9N115W 8N125W 6N140W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION IS LOCATED WITHIN 90 NM EITHER SIDE OF A 9N112W 
10N119W LINE.

...DISCUSSION...

N OF 15N...
ANTICYCLONIC FLOW ALOFT COVERS THE AREA N OF 25N W OF 130W. AN 
ELONGATED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED IN 
THE VICINITY OF 22N125W AND IS NEARLY STATIONARY. CYCLONIC FLOW 
COVERS MOST OF THE AREA...EXCEPT AS NOTED ABOVE...N OF 15N. A 
JET ORIGINATING ABOUT FIVE DEGREES EAST OF THE DATELINE ENTERS 
THE DISCUSSION AREA AT 20N140W AND REACHES ITS SOUTHERN MOST 
POINT AT 16N128W AND THEN CONTINUES ENE THROUGH SOUTHERN BAJA 
CALIFORNIA AND INTO MEXICO. THE STRONGEST FLOW IS LOCATED W OF 
128W WITH SATELLITE CLOUD DRIFT WINDS INDICATING SPEEDS OF 90 TO 
100 KNOTS. A SEPARATE MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS 
EXTENDING THROUGH 32N109W TO NEAR 25N110W WITH CYCLONIC FLOW 
NOTED WITHIN EIGHT DEGREES EITHER SIDE OF THE AXIS. AT THE 
SURFACE STRONG NE TRADE WINDS...WITH SPEEDS UP TO 30 KNOTS AND 
SEAS TO 15 FT...ARE LOCATED FROM 15N TO 24N W OF 125W.

S OF 15N...
MODERATE EASTERLY FLOW ALOFT COVERS MOST OF THE DEEP TROPICS W 
OF ABOUT 95W...BECOMING SOUTHERLY E OF 95W INTO CENTRAL AMERICA 
AND COLOMBIA.  WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE E 
OF 105W. THE STRONG TRADE WINDS NOTED ABOVE EXTEND SOUTHWARD TO 
8N W OF 125W.

$$
CAB