Eastern Pacific Tropical Weather Discussion

000
AXPZ20 KNHC 080335
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
0405 UTC SAT MAR 08 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.                           

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

THE MONSOON TROUGH AXIS EXTENDS FROM 06N77W TO 09N86W TO 04N99W. 
THE ITCZ AXIS EXTENDS FROM  04N99W TO 07N120W TO BEYOND 05N140W. 
NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

A 1025 MB HIGH PRESSURE AREA IS CENTERED N OF THE AREA NEAR 
34N128W. BROAD RIDGING EXTENDS SE-S OF THE HIGH TO 18N107W... 
AND TO THE SW OF THE HIGH TO 24N140W. TROUGHING IS ALONG THE 
CALIFORNIA COAST. A TIGHT PRESSURE GRADIENT EXISTS BETWEEN THE 
TROUGHING AND RIDGING SUPPORTING FRESH TO STRONG WINDS FROM THE 
SOUTHERN CALIFORNIA COASTAL WATERS S INTO THE AREA TO 28N...E OF 
122W TO THE NORTHERN PORTION OF THE BAJA CALIFORNIA PENINSULA. 
THESE WINDS WILL DIMINISH DURING THE NEXT 24 HOURS AS THE 
PRESSURE GRADIENT SLACKENS SLIGHTLY.

A SET OF NW SWELL WITH SIGNIFICANT WAVE HEIGHTS OF 8-12 FT... 
HIGHEST SEAS N OF 28N BETWEEN 116W AND 122W...IS ROUGHLY W OF   
A LINE FROM 27N113W TO 04N135W...AIDED BY THE ADDITION OF 
NORTHERLY WIND WAVES. THIS SET OF NW SWELL WILL DECAY AS IT 
SHIFTS TO THE SE COVERING THE AREA N OF 21N BETWEEN 112W AND 
124W IN 24 HOURS...THEN TO LESS THAN 8 FT BY 36 HOURS. 

A COLD FRONT IS CURRENTLY W OF 140W. THAT FRONT WILL MOVE CLOSER 
TO THE NW CORNER LATER TONIGHT. FRESH TO STRONG S-SW WINDS WILL 
ARRIVE AHEAD OF IT OVER THE NW CORNER BY LATE TONIGHT/EARLY SAT 
MORNING...ALONG WITH NW SWELL AT 8-10 FT. THE WINDS WILL 
DIMINISH BY SAT AFTERNOON AS THE FRONT WEAKENS WHILE THE NW 
SWELL BUILDS TO UP TO 13 FT AT 30N140W. THE FRONTAL BOUNDARY 
WILL MANAGE TO BREACH 30N140W BY SAT EVENING...GRADUALLY 
DISSIPATING THROUGH SUN. THE SET OF NW SWELL WILL CONTINUE TO 
PROPAGATE TO THE E-SE COVERING THE WATERS W OF A LINE FROM 
30N124W TO 10N140W BY SUN AFTERNOON.

A SURFACE TROUGH EXTENDS FROM 16N103W TO 11N108W. ASSOCIATED 
SCATTERED MODERATE CONVECTION IS FROM 11N TO 13N BETWEEN 97W  
AND 101W. THIS TROUGH IS FORECAST TO GRADUALLY DISSIPATE AS IT 
DRIFTS WESTWARD DURING THE NEXT 48 HOURS.

GULF OF CALIFORNIA...CURRENTLY LIGHT TO MODERATE VARIABLE WINDS 
AND 1-3 FT SEAS PREVAIL. FRESH TO STRONG NW-N WINDS WILL SET UP 
N OF 30N BY SAT MORNING...PERSISTING THROUGH SUN MORNING AS THE 
PRESSURE GRADIENT OVER THE AREA TIGHTENS.

GAP WINDS...WINDS WILL BE PRIMARILY LIGHT TO MODERATE WITH 3-5 
FT SEAS IN THE GULFS OF TEHUANTEPEC...FONSECA...AND PANAMA 
THROUGH THE WEEKEND. SIMILAR CONDITIONS WILL BE IN THE GULF OF 
PAPAGAYO...EXCEPT INCREASING TO MODERATE TO FRESH LEVELS WITH 
SEAS BUILDING TO 4-6 FT DURING THE LATE NIGHT AND EARLY MORNING 
HOURS WITH NOCTURNAL DRAINAGE FLOW ENHANCEMENT.

$$
LEWITSKY