000
AXPZ20 KNHC 262150
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED DEC 26 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 
2100 UTC.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS ALONG...6N77W 7N105W 9N115W 
8N140W. SCATTERED MODERATE CONVECTION WITHIN 90 NM OF 6N85W.

...DISCUSSION...
UPPER LEVELS...
WELL DEFINED TROUGH IS NORTH OF A LINE 25N140W 22N125W 23N105W. THE 
AREA IS DRY AND CLOUD FREE IN MIDDLE AND UPPER LEVELS. A PLUME OF 
ITCZ CONVECTIVE MOISTURE IS ABOUT 500 NM SE OF THE TROUGH E OF 130W. 
THIS MOISTURE IS MOVING OVER A LARGE PORTION OF CENTRAL MEXICO. A  
POORLY DEFINED TROUGH IS SOUTH OF THE ITCZ ACROSS THE ENTIRE AREA.
REMAINDER OF THE AREA IS COVERED BY WEAK ANTICYCLONIC FLOW.   

EXCEPT FOR ITCZ CONVECTION E OF 88W THE AREA SE OF LINE FROM 20N95W 
TO THE ITCZ NEAR 110W IS DRY AND CLOUD FREE IN THE MIDDLE AND UPPER 
LEVELS. THE AREA SOUTH OF A LINE 8N110W EQ135W IS ALSO DRY AND CLOUD 
FREE IN THE MIDDLE AND UPPER LEVELS.

SURFACE...
STRONG RIDGE IS NORTH OF THE ITCZ WEST OF 117W. STRONG 20-30 KT TRADE
WINDS WITH COMBINED SEAS TO 15 FEET ASSOCIATED WITH THIS LARGE RIDGE.
REMAINDER OF THE AREA IS ANALYZED AS A WEAK TROUGH.

GAP WINDS OF 20 TO OCCASIONALLY 25 KNOTS WILL CONTINUE FOR ANOTHER 24
TO 48 HOURS IN THE GULF OF PAPAGAYO REGION.

NORTHWEST WINDS IN THE GULF OF CALIFORNIA WILL FLUCTUATE AROUND THE 
20 TO 25 KNOT RANGE DURING THE NEXT 48 HOURS.

$$
MUNDELL