000
AXPZ20 KNHC 282146
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI DEC 28 2007

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.
 
...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...6N77W 7N105W 
9N120W 7N125W 5.5N140W. SCATTERED MODERATE CONVECTION IS LOCATED 
WITHIN 50 NM OF 7.2N79.5W AND 6.9N89W. SCATTERED MODERATE 
CONVECTION IS LOCATED WITHIN 100 NM OF 8N107.7W. SCATTERED 
MODERATE CONVECTION IS LOCATED FROM 8N TO 9.5N BETWEEN 111W AND 
116W.

...DISCUSSION...

N OF 14N...
AN ELONGATED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED 
IN THE VICINITY OF 22N127W AND IS NEARLY STATIONARY. CYCLONIC 
FLOW COVERS MOST OF THE AREA N OF 14N. A JET ORIGINATING ABOUT 
FIVE DEGREES EAST OF THE DATELINE ENTERS THE DISCUSSION AREA AT 
21N140W 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 80 TO 90 KNOTS. A SEPARATE 
MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS EXTENDING THROUGH 32N112W 
TO NEAR 25N112W 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...ARE LOCATED S OF ABOUT 25N 
W OF 125W.

S OF 14N...
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. 

$$
CAB