000
AXPZ20 KNHC 171528
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI DEC 17 2010

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS ALONG 05N77W TO LOW 
PRES 07N90W CONTINUING TO LOW PRES 09N108W TO 11N131W TO 
09N140W. SCATTERED MODERATE CONVECTION WITHIN 30 NM EITHER SIDE 
OF AXIS BETWEEN 127W AND 130W. 

...DISCUSSION...

WEAK SURFACE HIGH PRESSURE 1016 MB CENTERED NEAR 24N121W WITH 
RIDGE EXTENDING SE TO NEAR 16N109W. A DISSIPATING COLD FRONT 
EXTENDS FROM 30N122W TO 26N133W. THIS FRONT WILL DISSIPATE 
WITHIN THE NEXT 24 HOURS. A SECOND COLD FRONT WILL ENTER THE NW 
PART OF THE FORECAST AREA WITHIN 24 HOURS...AND WILL BE 
ACCOMPANIED BY 20 TO 25 KT WINDS WITH SEAS 7 TO 10 FT IN NW 
SWELL. THE FRONT SHOULD REACH ALONG 30N130W TO 26N140W IN 48 
HOURS WITH SEAS W OF THE FRONT BUILDING 8 TO 13 FT PRIMARILY IN 
THE NW SWELL.  

SURFACE LOW PRESSURE 1010 MB NEAR 07N90W TO WILL REMAIN 
STATIONARY THROUGH 48 HOURS WITH WINDS 15 TO 20 KT CONTINUING 
JUST SE OF THE CENTER. LOW PRES 1012 MB NEAR 09N108W WILL MOVE W 
AND GRADUALLY DISSIPATE THROUGH 48 HOURS WITH WINDS TO 20 KT 
MAINLY OVER THE IMMEDIATE SE AND SW QUADRANTS. 
 
GAP WINDS...WINDS OVER THE GULF OF PANAMA HAVE DIMINISHED BELOW 
20 KT. A COLD FRONT WILL MOVE SE THROUGH THE WESTERN GULF OF 
MEXICO SAT NIGHT WITH NORTHERLY WINDS AT 20 TO 25 KT SURGING 
THROUGH THE CHIVELA PASS AND INTO THE GULF OF TEHUANTEPEC.

$$
AL