000
AXPZ20 KNHC 170321
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED NOV 17 2010

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...
AXIS ANALYZED ALONG 06N84W TO 05N89W TO 12N110W TO 11N140W. 
SCATTERED MODERATE TO STRONG CONVECTION WITHIN 120 NM N OF AXIS 
BETWEEN 117W AND 122W. 

...DISCUSSION...
WEAKENING 1030 MB HIGH PRES WAS CENTERED NEAR 39N140W WITH 
ASSOCIATED RIDGE AXIS EXTENDING SE INTO THE DISCUSSION AREA TO 
NEAR 20N110W. THE WEAKENING HIGH PRESSURE HAS STARTED TO 
DECREASE THE PRESSURE GRADIENT ACROSS THE NW PORTION OF THE 
AREA. AS A RESULT...TRADES WILL DIMINISH BELOW 20 KT OVERNIGHT. 
WITH THE TRADES DIMINISHING...SEAS ACROSS THE NW PORTION OF THE 
AREA WILL BEGIN A SUBSIDING TREND AS WELL. 

GAP WINDS
A COLD FRONT ALONG THE GULF OF MEXICO EXTENDING FROM THE FLORIDA 
BIG BEND REGION TO VERACRUZ MEXICO. THE FRONT WILL REACH THE BAY 
OF CAMPECHE WHERE IT WILL STALL WED. A REINFORCING COLD FRONT 
WILL MOVE INTO THE NW GULF OF MEXICO LATE WED AND SHIFT RAPIDLY 
ACROSS THE GULF OF MEXICO THURSDAY. WINDS BEHIND THE REINFORCING 
COLD FRONT WILL FUNNEL THROUGH THE ISTHMUS OF TEHUANTEPEC INTO 
THE GULF OF TEHUANTEPEC INCREASING WINDS BY LATE WED NIGHT. 
WINDS ARE EXPECTED TO REACH GALE FORCE LATE THU NIGHT.   

$$
AL