000
AXPZ20 KNHC 012139
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE JAN 01 2008

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 
2100 UTC.
 
...ITCZ...

INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 5N77W 8N110W 8N115W 
7N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED 
WITHIN 180 NM N OF AXIS BETWEEN 111W AND 117W AND ALSO NEAR 
8N12OW.

...DISCUSSION...

W OF 105W...
A MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 
26N120W...MOVING NE ABOUT 10 KNOTS. A TROUGH AXIS EXTENDS S OF 
THE CIRCULATION TO 20N110W AND CYCLONIC FLOW IS NOTED WITHIN 8 
TO 8 DEGREES EITHER SIDE OF THE AXIS. A RIDGE ALOFT IS LOCATED 
OVER NW MEXICO. THE FLOW ALOFT IS DIVERGENT W OF 125W WITH 
SOUTHWESTERLIES LOCATED IN THE AREA N OF 25N AND NORTHWESTERLY 
WINDS S OF 25N. A JET ENTERS THE AREA AT 28N140W AND CONTINUES 
THROUGH 29N135W TO BEYOND 32N132W. SATELLITE CLOUD DRIFT WINDS 
ARE IN THE 70 TO 80 KNOT RANGE ALONG THE JET AXIS. AT THE 
SURFACE NE TRADE WINDS ARE 20 TO 25 KNOTS IN THE AREA FROM 8N TO 
18N W OF 120W. A COLD FRONT HAS ENTERED THE FAR NW PART OF THE 
DISCUSSION AREA WITH SW WINDS TO 20 KNOTS AND SEAS TO 11 FT 
AHEAD OF THE FRONT.

E OF 105W...
THE FLOW ALOFT IS MOSTLY SOUTHERLY ACROSS THE TROPICAL EAST 
PACIFIC. AT THE SURFACE A GALE WARNING WILL BEGIN OVER THE GULF 
OF TEHUANTEPEC WITHIN 12 HOURS AND INCREASE TO STORM FORCE 
WITHIN 24 HOURS.

$$
CAB