000
AXPZ20 KNHC 260350
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED DEC 26 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 
0300 UTC.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS ALONG...8N78W 8N85W 11N115W 
8N130W 8N140W. SCATTERED MODERATE CONVECTION WITHIN 150 NM N OF AXIS 
W OF 105W.

...DISCUSSION...
UPPER LEVELS...
TROUGH IS NORTH OF A LINE 24N134W 21N122W 25N108W. WITHIN 600 NM 
SOUTH OF THE TROUGH DIFLUENT FLOW ALOFT IS CREATING A LARGE AREA OF 
MIDDLE AND UPPER LEVEL MOISTURE WITH THIN BROKEN HIGH CLOUDS...BEING 
ADVECTED INTO CENTRAL MEXICO. OTHERWISE THE TROUGH AREA IS DRY AND 
CLOUD FREE IN THE MIDDLE AND UPPER LEVELS.

ANOTHER TROUGH IS IN THE LOW LATITUDES SOUTH OF THE ITCZ AND WEST OF 
105W WITH LITTLE ASSOCIATED WEATHER.

E OF A LINE 20N95W TO THE ITCZ NEAR 107W AND SOUTH OF THE ITCZ EAST 
OF 120W IS DRY AND CLOUD FREE IN THE MIDDLE AND UPPER LEVELS.

SURFACE...
STRONG RIDGE IS NORTH OF THE ITCZ WEST OF 110W. STRONG TRADE WINDS 
OVER A LARGE PART OF THE PACIFIC REGION WEST OF 115W RESULT FROM THE 
ASSOCIATED PRESSURE GRADIENT. ELSEWHERE WEAK TROUGH IS ANALYZED.

GAP WINDS IN THE GULF OF TEHUANTEPEC OF 20 KT WILL DECREASE TO LESS 
THAN 20 KT IN ABOUT 12 HOURS.

GAP WINDS IN THE GULF OF PAPAGAYO REGION OF 20 TO OCCASIONALLY 25 KT 
WILL CHANGE LITTLE THROUGH 48 HOURS.

NW WINDS TO 30 KNOTS IN THE NORTHERN GULF OF CALIFORNIA WILL SPREAD 
SOUTHWARD THROUGH 12-24 HOURS THEN TEMPORARILY RETREAT NORTH AND 
WEAKEN BUT INCREASE AGAIN N OF 27N IN ABOUT 36 HOURS.

$$
MUNDELL