000
AXPZ20 KNHC 151446
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC MON DEC 15 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1430 UTC.  
      
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
           
THE MONSOON TROUGH AXIS EXTENDS FROM LOW PRES NEAR 07N88W TO 
05N98W. THE ITCZ AXIS EXTENDS FROM 05N98W TO 07N110W TO 08N122W 
THEN RESUMES FROM 07N126W TO 06N140W. SCATTERED MODERATE 
CONVECTION IS FROM 09N TO 11N BETWEEN 110W AND 115W...FROM 08.5N 
TO 10.5N BETWEEN 115W AND 122W...AND ALSO FROM 05N TO 07.5N 
BETWEEN 130W AND 137W.

...DISCUSSION...

A COLD FRONT REACHES FROM 30N127W TO 21N140W. SCATTEROMETER  
DATA SAMPLED MODERATE TO FRESH NW-N WINDS BEHIND THE FRONT AND 
ALTIMETER PASSES INDICATED 13-17 FT SEAS W OF THE FRONT. LONG 
PERIOD NW SWELL WITH SEAS OF 8 FT OR GREATER IS WELL OUT AHEAD 
OF THE FRONT COVERING THE MAJORITY OF THE WATERS W OF 100W. THE 
LEADING EDGE OF THESE HIGHER SEAS WILL DECAY BY 24 HOURS WITH 
REINFORCING NW SWELL TAKING ITS PLACE BY 48 HOURS ONCE AGAIN 
COVERING THE MAJORITY OF THE WATERS W OF 100W.

HIGH PRESSURE BUILDING IN BEHIND THE FRONT IS ALLOWING MODERATE 
TO LOCALLY FRESH TRADE WINDS JUST N OF THE ITCZ W OF 130W. THE 
HIGH PRESSURE WILL STRENGTHEN AND CONTINUE TO BUILD IN ACROSS 
THE NW PORTION THROUGH MID WEEK...SUPPORTING FRESH TO LOCALLY 
STRONG TRADE WINDS ACROSS THE TROPICAL PACIFIC W OF 125W BY WED.

EAST OF THE FRONT...1019 MB CENTERED NEAR 28N119W WILL DRIFT SE 
AND DISSIPATE AHEAD OF THE FRONT THROUGH TUE MORNING. THE 
WEAKENING HIGH PRES IS MAINTAINING GENERALLY MODERATE TRADE 
WINDS FROM THE ITCZ TO 20N EAST OF 130W.

GAP WINDS...HIGH PRES BUILDING OVER THE NORTHERN GULF OF MEXICO 
BY MID WEEK WILL DELIVER FRESH TO STRONG GAP WINDS INTO THE GULF 
OF TEHUANTEPEC AND GULF OF PAPAGAYO BY LATE TUE NIGHT...ENHANCED 
IN PART BY LOCAL DRAINAGE EFFECTS. THESE WINDS WILL DIMINISH BY 
LATE WED MORNING. SEAS WILL BRIEFLY REACH 8 FT IN THE GULF OF 
TEHUANTEPEC AND 6 TO 7 FT IN THE GULF OF PAPAGAYO BY LATE TUE 
NIGHT/EARLY WED MORNING BEFORE SUBSIDING.

$$
LEWITSKY