000
AXPZ20 KNHC 261616
TWDEP 

TROPICAL WEATHER DISCUSSION                                                                                                            
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1605 UTC WED FEB 26 2014

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 
1515 UTC.                           

...SPECIAL FEATURE...

A STRONG COLD FRONT SWEEPING EASTWARD ACROSS NW PORTIONS OF THE 
HAWAIIAN ISLANDS IS EXPECTED TO ENTER THE NW PORTION OF THE AREA 
WATERS EARLY THU MORNING AND MOVE E TO A POSITION FROM 30N129W 
TO 23N135W BY THU EVENING. WESTERLY GALE FORCE WINDS TO 40 KT 
AREA EXPECTED N OF 27N BEHIND THE FRONT THU AND THU NIGHT...WITH 
SEAS BUILDING AS HIGH AS 22 FT IN NW SWELL. 
 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...              

MONSOON TROUGH REMAINS WEAK AND ILL DEFINED ACROSS E PORTIONS OF 
THE AREA INTO COLOMBIA AND IS BETTER DESCRIBED AS ITCZ. ITCZ 
EXTENDS FROM 05N88W TO 04N94W TO 05N116W TO 04N137W TO BEYOND 
06N140W. SCATTERED MODERATE TO STRONG CONVECTION NOTED FROM 
04.5N TO 07N BETWEEN 116.5W AND 119W. 

...DISCUSSION...

IN THE UPPER LEVELS...A LARGE NEGATIVE TILT UPPER LEVEL TROUGH 
EXTENDS FROM THE FAR NE PACIFIC SE INTO THE PACIFIC NW COAST OF 
THE U.S. AND IS YIELDING FAST PROGRESSIVE UPPER LEVEL FLOW 
ACROSS THE DISCUSSION AREA N OF 26N W OF 130W. SEVERAL SHORT 
WAVES AND ASSOCIATED FRONTS ARE MOVING THROUGH THIS 
TROUGH...WITH THE LAST AND STRONGEST SUPPORTING THE FRONT 
CURRENTLY ACROSS THE NW HAWAIIAN ISLANDS...WHICH WILL BRING 
GALES TO NW PORTIONS OF THE DISCUSSION AREA WITHIN 24 HOURS. 

A PERSISTENT UPPER LEVEL CYCLONE REMAINS CUT OFF FROM THE MEAN 
FLOW...CENTERED NEAR 06N122W WITH TROUGH AXIS EXTENDING NE 
ACROSS THE CENTRAL BAJA CALIFORNIA PENINSULA AND NW MEXICO. 
STRONG CYCLONIC TURNING AT MID LEVELS AND MILD DIFFLUENCE ALOFT 
IS ACTING TO ENHANCE CONVECTION NEAR THE ITCZ MENTIONED ABOVE. 
OTHERWISE...LITTLE CONVECTION IS NOTED ACROSS THE REGION. BROAD 
UPPER LEVEL RIDGING PREVAILS ON BOTH THE W AND E OF THIS TROUGH.

AT THE SURFACE...A COLD FRONT IS OVER THE NW CORNER FROM 30N129W 
TO 22N140W MOVING E AND WEAKENING. N OF 28N W OF FRONT NW WINDS 
ARE 20 TO 25 KT WITH SEAS 14 TO 16 FT. ELSEWHERE NW OF LINE FROM 
30N127W TO 19N140W WINDS ARE 20 KT OR LESS WITH SEAS 8 TO 16 FT. 
A 1017 MB HIGH IS CENTERED NEAR 25N118W AND IS EXPECTED TO 
REMAIN QUASI-STATIONARY FOR 24 HOURS.

GAP WINDS...

FRESH TO STRONG WINDS ARE OVER THE GULF OF PAPAGAYO. WINDS WILL 
DIMINISH TO 20 KT OR LESS BY THIS EVENING. 

$$
STRIPLING