000
AXPZ20 KNHC 050305
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED DEC 05 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 
0200 UTC.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...7N77W 6N93W 
8N114W 6N140W. SCATTERED CLUSTERS OF SCATTERED MODERATE 
CONVECTION ARE WITHIN 150 NM OF THE ITCZ AXIS FROM 85W-132W. 

...DISCUSSION...
UPPER LEVELS...
A NARROW MID/UPPER LEVEL RIDGE AXIS IS ALONG THE W EDGE OF THE 
AREA WITH THE AXIS THROUGH 25N140W TO 32N130W. A NARROW UPPER 
LEVEL TROUGH AXIS EXTENDS FROM AN UPPER LOW OFF THE COAST OF THE 
BAJA PENINSULA NEAR 29N118W TO A SECOND UPPER LOW NEAR 23N134W 
ALONG 20N134W TO A THIRD UPPER LOW NEAR 12N134W. AN UPPER LEVEL 
HIGH IS SE OF THE THIS UPPER TROUGH NEAR 19N123W DOMINATING THE 
AREA FROM 10N-24N BETWEEN 110W-130W. 

AT THE SURFACE...A STATIONARY FRONT REMAINS OVER THE EXTREME NW 
PART OF THE AREA FROM 32N134W TO BEYOND 28N140W BECOMING 
INCREASINGLY ILL-DEFINED WITH ONLY WIDELY ISOLATED SHOWERS 
WITHIN 60-90 NM OF THE FRONT. A WEAK SURFACE TROUGH EXTENDS 
ALONG TH3E E COAST OF THE GULF OF CALIFORNIA. RIDGE COVERS THE 
REMAINDER OF THE AREA BETWEEN THE FRONT AND SURFACE TROUGH TO 
14N ANCHORED BY A 1028 MB HIGH NEAR 29N127W. 

GAP WINDS OF 20 TO 25 KT IN THE GULF OF TEHUANTEPEC AREA. THESE 
WINDS ARE FORECAST WINDS TO DROP TO LESS THAN 20 KT WITHIN THE 
NEXT 12 HOURS. 

LARGE NORTHWEST SWELLS OF UP TO 21 FT OBSERVED OVER THE NW PART 
OF THE AREA WILL SPREAD SE AND DIMINISH THROUGH 48 HOURS AND 
IMPACT MOST OF THE AREA NORTH OF THE EQUATOR AND WEST OF 110W. 

$$
PAW