000
AXPZ20 KNHC 271505
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
1605 UTC FRI FEB 27 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...GALE FORCE N-NE WINDS
CONTINUE OVER THE GULF OF TEHUANTEPEC AND ARE EXPECTED TO
CONTINUE THROUGH SUNDAY MORNING BEFORE DIMINISHING BELOW GALE
FORCE BY SUN AFTERNOON. SEAS ARE REACHING NEAR 19 FT OVER THE
GULF OF TEHUANTEPEC. THE N-NE SWELL FROM THE GAP WIND EVENT IS
MIXING WITH ENE SWELL FROM A GAP WIND EVENT OVER THE GULFS OF
FONSECA AND PAPAGAYO...LONG PERIOD CROSS EQUATORIAL SW SWELL...
AND WITH LONG PERIOD NW SWELL RESULTING IN SEAS 8 FT OR GREATER
ACROSS THE WATERS GENERALLY S OF 15N BETWEEN 90-110W. THIS WILL
CONTINUE THROUGH MON NIGHT WHEN THE SEAS WILL BEGIN TO SUBSIDE.
     
...INTERTROPICAL CONVERGENCE ZONE...

THE ITCZ EXTENDS FROM 04N00W TO 01S112W TO 01S117W TO 03N135W TO
BEYOND 00N137W. SCATTERED MODERATE ISOLATED STRONG CONVECTION
WAS NOTED WITHIN 90 NM OF THE ITCZ BETWEEN 93W AND 98W.

...DISCUSSION...

HIGH PRESSURE OF 1025 MB CENTERED N OF THE AREA NEAR 35N127W
EXTENDS A RIDGE SE TO NEAR 20N110W AND SW TO BEYOND 28N140W. 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. A LARGE AREA OF SEAS GREATER THAN 8 FT
COVER THE WATERS GENERALLY W OF 100W IN A MIX OF LONG PERIOD NW
AND SW SWELLS. THIS AREA OF SEAS GREATER THAN 8 FT WILL CONTINUE
THROUGH EARLY NEXT WEEK BEFORE STARTING TO SUBSIDE. 

GAP WINDS...

IN ADDITION TO THE GALE FORCE GAP WIND EVENT OVER THE GULF OF
TEHUANTEPEC...STRONG HIGH PRESSURE N OF THE AREA HAS HELPED TO
GENERATE A GULF OF PAPAGAYO GAP WIND EVENT WITH STRONG TO NEAR
GALE WINDS EXPECTED OVER THE AREA THROUGH EARLY MONDAY BEFORE
STARTING TO DIMINISH. THIS EVENT IS COVERING A LARGE ENOUGH AREA
WHERE THE GULF OF FONSECA IS ALSO AFFECTED BY WINDS 25 KT OR
GREATER. SEAS ASSOCIATED TO THIS GAP WIND EVENT HAVE BUILT TO
NEAR 11 FT. THE NE SWELLS GENERATED FROM THIS EVENT CONTINUE TO
PROPAGATE WESTWARD FROM THE REGION AND MIX WITH THE NE SWELLS
GENERATED FROM THE GULF OF TEHUANTEPEC GAP WIND EVENT.
WINDS HAVE INCREASED TO 20 TO 25 KT OVER AND DOWNWIND OF THE
GULF OF PANAMA THIS EVENING WITH SEAS BUILDING TO NEAR 11 FT.
WINDS WILL DIMINISH TO 20 KT OR LESS BY MON MORNING WITH SEAS
GREATER THAN 8 FT STILL LINGERING. 

$$
AL