000
AXPZ20 KNHC 251515
TWDEP 

TROPICAL WEATHER DISCUSSION                                  
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
1605 UTC WED FEB 25 2015

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
1500 UTC.               

...SPECIAL FEATURE... 

GULF OF TEHUANTEPEC GALE WARNING... 

WINDS OVER THE GULF OF TEHUNATEPEC HAVE SLIGHTLY DIMINISHED AND
ARE NO LONGER AT STORM FORCE...BUT STRONG GALE FORCE WINDS AND
SEAS REACHING NEAR 21 FT PREVAIL. SEAS IN EXCESS OF 12 FT WILL
EXTEND UP TO 500 NM SW OF TEHUANTEPEC BY THIS EVENING. GALE
FORCE WINDS WILL CONTINUE OVER THE GULF OF TEHUANTEPEC THROUGH
SUNDAY MORNING WITH ASSOCIATED NE SWELL PROPAGATING WELL W OF
THE AREA. THESE SWELLS WILL MIX WITH LARGE NW SWELL MOVING
THROUGH THE ENTIRE REGION TO SET UP AN AREA OF CONFUSED SEAS
IN THE 8-12 FT RANGE FRI AND SAT BETWEEN 95W-110W.
 
...INTERTROPICAL CONVERGENCE ZONE... 

THE ITCZ EXTENDS FROM 06N86W TO 05N86W TO 04N115W TO 02N121W TO
01N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WAS NOTED
WITHIN 120 NM N OF THE ITCZ BETWEEN 92W AND 96W. SCATTERED
MODERATE ISOLATED STRONG CONVECTION WAS NOTED WITHIN 120 NM S OF
THE ITCZ BETWEEN 110W AND 120W. SCATTERED MODERATE CONVECTION
WAS NOTED WITHIN 60 NM OF THE ITCZ W OF 137W. 

...DISCUSSION... 

WEAK HIGH PRESSURE OF 1020 MB IS CENTERED OVER THE NORTHERN
WATERS NEAR 28N132W EXTENDS A RIDGE SE TO NEAR 20N110W. THE
PRESSURE GRADIENT BETWEEN THE AREA OF HIGH PRESSURE AND LOWER
PRESSURE IN THE VICINITY OF THE ITCZ IS SUPPORTING MODERATE TO
LOCALLY FRESH TRADEWINDS. NW SWELLS IN THE 8-13 FT RANGE ARE
COVERING THE WATERS W OF LINE FROM 30N116W TO 22N111W TO 20N111W
TO 00N125W. THE AREA OF HIGH PRESSURE WILL CONTINUE TO WEAKEN
OVER THE NEXT 24 HOURS. THIS WILL ENABLE A COLD FRONT TO MOVE
INTO THE NW WATERS. THIS FRONT WILL HELP USHER IN A NEW SET OF
LARGE LONG PERIOD NW SWELLS INTO THE NW WATERS FRIDAY WITH SEAS
BUILDING TO NEAR 20 FT BY FRI MORNING. THIS NEW SET OF NW SWELLS
WILL HELP TO MAINTAIN THE LARGE AREA OF COVERAGE OF SEAS 8 FT OR
GREATER OVER THE WESTERN WATERS W OF 110W. 
 

GAP WINDS...

IN ADDITION TO THE STRONG GALE FORCE GAP WIND EVENT OVER THE
GULF OF TEHUANTEPEC...STRONG HIGH PRESSURE BUILDING BEHIND THE
COLD FRONT OVER THE WESTERN CARIBBEAN WILL HELP TO GENERATE A
GULF OF PAPAGAYO AND GULF OF PANAMA GAP WIND EVENT. FRESH TO
STRONG WINDS ARE CURRENTLY FUNNELING INTO THE GULF OF PAPAGAYO
AND ARE EXPECTED TO INCREASE TO NEAR GALE FORCE LATER THIS
EVENING. THESE STRONG TO NEAR GALE WINDS WILL CONTINUE THROUGH
SAT MORNING WITH SEAS BUILDING TO NEAR 11 FT. THE NE SWELLS
GENERATED FROM THIS EVENT WILL PROPAGATE WESTWARD FROM THE
REGION AND MIX WITH THE NE SWELLS GENERATED FROM THE GULF OF
TEHUANTEPEC GAP WIND EVENT. WINDS WILL INCREASE TO 20 KT OVER
AND DOWNWIND OF THE GULF OF PANAMA FRIDAY NIGHT WITH SEAS
BUILDING TO NEAR 8 FT BY SAT MORNING. 

$$
AL