000
AXPZ20 KNHC 180314
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU NOV 18 2010

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
AXIS ANALYZED ALONG 10N86W TO 06N95W TO LOW PRES NEAR 12N111W 
THEN CONTINUES TO 09N127W TO 11N135W TO 09N140W. NO SIGNIFICANT 
CONVECTION ALONG THE ITCZ.

...DISCUSSION...

DISSIPATING HIGH PRESSURE 1023 MB CENTERED NEAR 36N138W WITH 
WEAK RIDGING TO NEAR 23N117W. AS A RESULT OF THE WEAKENING HIGH 
PRESSURE...THE PRESSURE GRADIENT HAS LOOSENED AND IS NO LONGER 
SUPPORTING TRADES ABOVE 20 KT OVER THE NW PART OF THE FORECAST 
AREA. SEAS OF 8 TO 10 FT IN NW SWELL CONTINUES NW OF LINE 
30N120W TO 12N125W TO 07N140W. THIS SWELL WILL CONTINUE TO 
SUBSIDE...TO LESS THAN 8 FT WITHIN 48 HOURS. 

N WINDS WILL INCREASE OVER THE GULF OF TEHUANTEPEC EARLY THU AND 
REACH GALE FORCE THURSDAY AFTERNOON AS A COLD FRONT PUSHES S 
ACROSS THE GULF OF MEXICO. WINDS ACROSS THE TEHUANTEPEC AREA MAY 
INCREASE FURTHER AND REACH AT OR ABOVE STORM FORCE LATE THURSDAY 
NIGHT THROUGH FRI MORNING.

$$
AL