000
AXPZ20 KNHC 232141
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN DEC 23 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 IS CENTERED ALONG 6N77W 9N110W 9N140W.
SCATTERED MODERATE CONVECTION WITHIN 90 NM OF 7N82W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN 60 NM OF AXIS FROM 125W 
TO 129W.

...DISCUSSION...
LONG WAVE TROUGH AXIS N OF 20N ALONG 115W. A PLUME OF UPPER LEVEL 
MOISTURE AND MULTI LEVEL CLOUDS IS EAST OF THE TOUGH AXIS MOVING OVER
CENTRAL MEXICO. SHORT WAVE ROTATING THROUGH THE LONG WAVE TROUGH 
EXTENDS FROM 30N115W TO 26N133W. AN UPPER RIDGE EXTENDS FROM DEEP IN 
THE TROPICS NEAR 11N128W NW TO 23N140W. DIFFLUENCE ASSOCIATED WITH 
THIS RIDGE EXTENDS FROM THE ITCZ TO 18N BETWEEN 125W AND 140W. THIS 
DIFFLUENCE IS ENHANCING ITCZ CONVECTION W OF 120W.

STRONG SURFACE RIDGE IS NORTH OF THE ITCZ WEST OF 115W. ELSEWHERE A 
BROAD TROUGH IS ANALYZED. GAP WINDS LESS THAN 25 KNOTS WILL BE IN 
THE GULF OF PAPAGAYO REGION THROUGH THE NEXT 48 HOURS. GALE FORCE 
WINDS EXPECTED IN THE GULF OF TEHUANTEPEC REGION DURING THE NEXT 12 
TO 24 HOURS.  GAP WINDS WILL CONTINUE THROUGH 48 HOURS...REMAINING 
IN THE 20 TO 25 KT RANGE. LARGE AREA OF OVERCAST STRATOCUMULUS IS 
LOCATED WITHIN 300 NM EITHER SIDE OF A LINE FROM 18N120W TO 26N140W.

$$
MUNDELL