000
AXPZ20 KNHC 150916
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON DEC 15 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 04N77W TO 
08N86W TO 07N110W TO 05N140W. SCATTERED MODERATE CONVECTION IS 
WITHIN 90 NM ON EITHER SIDE OF THE AXIS BETWEEN 97W TO 104W. 
SCATTERED MODERATE CONVECTION WITHIN 60 NM OF 06N119W AND WITHIN 
60 NM OF 11N132W.

...DISCUSSION...
A LARGE SCALE DEEP LAYERED TROUGH WITH ITS AXIS ALONG 30N107W TO 
15N135W IS SUPPORTING A WEAKENING COLD FRONT ACROSS NW MEXICO 
AND CENTRAL BAJA CALIFORNIA SW TO NEAR 24N122W. UPPER LEVEL 
MOISTURE AND THIN HIGH CLOUDS ARE N OF 30N AND E OF 131W. 
OTHERWISE THE AREA WEST OF THE TROUGH AXIS IS DRY AND CLOUD FREE 
IN THE MIDDLE AND UPPER LEVELS. BROKEN TO OVERCAST STRATOCUMULUS 
IS N OF 16N WEST OF THE AXIS TO 136W. BROKEN STRATOCUMULUS IS 
OBSERVED N OF 20N WEST OF 135W. THE TROUGH IS FORECAST TO 
INTENSIFY THROUGH 72 HOURS AND REMAIN IN PLACE. THIS FEATURE IS 
FORECAST TO CONTRIBUTE TO THE DEVELOPMENT OF A SURFACE TROUGH IN 
THE ITCZ WEST OF 125W IN 2 TO 3 DAYS. A PLUME OF UPPER LEVEL 
MOISTURE EXTENDS WITHIN 500 NM SOUTHEAST OF THE TROUGH AXIS WEST 
OF 105W. ONLY SCATTERED HIGH CLOUDS ARE ASSOCIATED WITH THIS 
PLUME OF MOISTURE E OF 115W WITH BROKEN TO OVERCAST MULTI LEVEL 
CLOUDS WEST OF 115W.

REMAINDER OF THE AREA IS COVERED BY BROAD ANTICYCLONIC FLOW. 

GAP WINDS OF 20 TO OCCASIONALLY 25 KNOTS WILL CONTINUE IN THE 
GULF OF PAPAGAYO REGION THROUGH AT LEAST 48 HOURS.

$$
HUFFMAN