000
AXPZ20 KNHC 020924
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE DEC 02 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...05N77W TO 
06N100W TO 08N140W. SCATTERED MODERATE TO STRONG CONVECTION IS 
WITHIN THE AREA 45 NM EITHER SIDE OF THE ITCZ AXIS FROM 127W TO 
134W.

...DISCUSSION...
DEEP LAYER TROUGH IS NORTH AND EAST OF A LINE THROUGH 32N122W TO 
15N110W TO 16N95W TO BEYOND 22N88W. THE AREA IS DRY AND CLOUD 
FREE IN THE MIDDLE AND UPPER LEVELS WITH OVERCAST STRATOCUMULUS 
OVER THE PACIFIC OFF THE BAJA CALIFORNIA COAST. SOME OVERCAST 
HIGH CLOUDS ARE DEVELOPING NEAR THE SOUTH HALF OF BAJA 
CALIFORNIA. THIS TROUGH IS FORECAST TO MOVE EAST WITH ANOTHER 
TROUGH MOVING OVER THE NORTHWEST AND NORTH CENTRAL PART OF THE 
PACIFIC AREA IN 48 HOURS.

A STRONG AND SHARP MOSTLY UPPER LEVEL TROUGH JUST TO THE WEST OF 
THE AREA IS ADVECTING MOISTURE AND MULTI LEVEL BROKEN TO 
OVERCAST CLOUDS OVER THE AREA NORTH OF THE ITCZ WEST OF 133W. 
THIS TROUGH IS FORECAST TO MOVE LITTLE AND WEAKEN THROUGH 48 
HOURS.

THE REMAINDER OF THE MIDDLE AND UPPER LEVELS IS DOMINATED BY 
WEAK ANTICYCLONIC FLOW.

WEAK SURFACE HIGH IS NORTH OF 15N WEST OF 115W WITH A 1026 MB 
CENTER NEAR 31N135W. ELSEWHERE BROAD TROUGH IS ANALYZED.
  
HIGH PRES CENTER OVER GULF OF MEXICO IS PUSHING AIR ACROSS THE 
ISTHMUS AND GULF OF TEHUANTEPEC OF GALE FORCE TODAY AND TONIGHT 
BEFORE RAPIDLY DIMINISHING AFTER 24 HOURS.

GAP WINDS WILL ALSO BEGIN TODAY IN THE GULF OF PAPAGAYO REGION 
AND INCREASE TO 20 TO 30 KNOTS AND CONTINUE THROUGH 24 HOURS 
THEN SLOWLY SUBSIDE.

$$
LL