000
AXPZ20 KNHC 032136
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON DEC 03 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 ALONG THE LINE...5N77W 8N85W 
6N109W 9N121W 7N140W. CLUSTERS OF SCATTERED MODERATE CONVECTION 
ARE WITHIN 90/120 NM OF THE ITCZ FROM 88W-105W. SCATTERED 
MODERATE/ISOLATED STRONG CONVECTION IS FROM 6N-12N BETWEEN 
120W-125W.

...DISCUSSION...
UPPER LEVELS...
DEEP LAYER TROUGH IS OVER THE AREA WEST OF 125W WITH AN AXIS 
ALONG THE LINE 30N125W THROUGH NAN UPPER LOW NEAR 16N132W TO 
9N132W. UPPER HIGH IS TO THE E NEAR 21N113W COVERING THE AREA N 
OF 15N E OF 120W. AN UPPER LOW IS IN THE TROPICS NEAR 4N110W 
WITH UPPER TROUGH AXIS EXTENDING NW TO 13N118W. A NARROW INDUCED 
UPPER RIDGE IS BETWEEN THIS UPPER TROUGH AND THE UPPER TROUGH W 
OF 125W DRAWING TROPICAL MOISTURE N AS DESCRIBED IN THE ITCZ 
ABOVE. 

AT THE SURFACE...
COLD FRONT IS ALONG 32N136W TO BEYOND 28N140W. SCATTERED SHOWERS 
AND POSSIBLE ISOLATED THUNDERSTORMS ARE WITHIN 75 NM OF THE 
FRONT. RIDGE COVERS THE REMAINDER OF THE ARE N OF 13N BETWEEN 
BAJA CALIFORNIA TO THE COLD FRONT. TYPICAL E/W TROUGH COVERS THE 
TROPICS. 

GAP WINDS IN THE GULF OF TEHUANTEPEC SHOULD INCREASE TO NEAR 30 
KT IN ABOUT 24 HOURS THEN SLOWLY DECREASE THROUGH 48 HOURS.
GULF OF PAPAGAYO WINDS WILL CONTINUE NEAR 20 KT THEN LESS THAN 
20 KT ON TUESDAY.

LARGE NORTHWEST SWELLS OBSERVED OVER THE NORTHWEST PART OF THE 
AREA WILL SPREAD SOUTHEAST THROUGH 48 HOURS WHEN THEY WILL COVER 
MOST OF THE AREA WEST OF 115W NORTH OF THE EQUATOR.

$$
WALLACE