000
AXPZ20 KNHC 040334
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE DEC 04 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 
0245 UTC.
 
...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...SCATTERED 
MODERATE/ISOLATED STRONG CONVECTION IS FROM 4N TO 8N BETWEEN 
112W TO 115W.

...DISCUSSION...
UPPER LEVELS...
DEEP LAYER TROUGH IS OVER THE AREA WEST OF 128W WITH AN AXIS 
ALONG THE LINE 30N126W THROUGH AN UPPER LOW NEAR 16N133W TO 
9N131W. UPPER HIGH IS TO THE E NEAR 21N116W COVERING THE AREA N 
OF 15N E OF 125W. AN UPPER LOW IS IN THE TROPICS NEAR 5N110W 
WITH UPPER TROUGH AXIS EXTENDING NW TO 12N116W. A NARROW INDUCED 
UPPER RIDGE IS BETWEEN THIS UPPER TROUGH AND THE UPPER TROUGH W 
OF 128W DRAWING TROPICAL MOISTURE N FROM 121W-130W TO 23N. 

AT THE SURFACE...
COLD FRONT IS ALONG 32N135W BECOMING STATIONARY OUT OF THE AREA 
NEAR 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