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Eastern Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 241538
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU APR 24 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 
1500 UTC. 

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

NO MONSOON TROUGH IS PRESENT. THE ITCZ AXIS EXTENDS FROM 07N81W 
TO 04N110W TO 03N125W TO BEYOND 03N140W. SCATTERED MODERATE AND 
ISOLATED STRONG CONVECTION IS N OF 05N BETWEEN 78W AND 82W...N 
OF THE ITCZ BETWEEN 82W AND 85W...WITHIN 120 NM EITHER SIDE OF 
THE ITCZ BETWEEN 86W AND 89W....WITHIN 180 NM S OF THE ITCZ 
BETWEEN 88W AND 90W...WITHIN 180 NM S OF THE ITCZ BETWEEN 100W 
AND 110W...AND ALSO WITHIN 240 NM N OF THE ITCZ BETWEEN 117W AND 
121W.

...DISCUSSION...                                       

A SURFACE RIDGE EXTENDS ACROSS THE WATERS N OF 20N W OF 107W. 
THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE 
ASSOCIATED WITH THE ITCZ TO THE S IS SUPPORTING FRESH TO STRONG 
WINDS FROM 09N TO 14N W OF 133W WITH 9-10 FT SEAS. A LARGER AREA 
OF MODERATE TO FRESH TRADES SURROUNDS WITH 8-9 FT SEAS COVERING 
THE W CENTRAL WATERS. THE TRADES WILL DIMINISH TO MODERATE TO 
FRESH BY 24 HOURS WITH THE AREA OF 8-9 FT SEAS IN MIXED NE... 
SW...AND NW SWELL SPREADING EASTWARD TO 110W ACROSS THE CENTRAL 
WATERS.

FRESH TO STRONG WINDS ARE N OF THE AREA ALONG THE CALIFORNIA 
COAST. THESE WINDS ARE HELPING TO SUPPORT NW SEAS AT 8-10 FT 
WHICH ARE FEEDING INTO THE WATERS N OF 25N BETWEEN 115W AND 
126W. THESE SEAS WILL SUBSIDE TO LESS THAN 8 FT AROUND FRI 
AFTERNOON...WITH A NEW SET OF NW SWELL ARRIVING SHORTLY 
THEREAFTER AND COVERING THE WATERS N OF 25N BETWEEN 115W AND 
132W BY SAT MORNING.

CROSS-EQUATORIAL SOUTHERLY SWELL AT 8-10 FT COVERS THE WATERS   
S OF A LINE FROM 03.4S92W TO 10N114W TO 00N134W. THIS SWELL WILL 
CONTINUE TO PROPAGATE TO THE N REACHING THE SW COAST OF 
MEXICO...SOUTHERN GULF OF CALIFORNIA...AND THE PACIFIC COAST OF 
THE BAJA CALIFORNIA PENINSULA LATE TONIGHT INTO EARLY FRI. SEAS 
OF 8-9 FT WILL COVER THE AREA S OF A LINE FROM 20N110W TO 10N76W 
TO 02N91W TO 01N82W.

OTHERWISE...EXPECT FAIRLY TRANQUIL CONDITIONS IN THE GULFS OF 
TEHUANTEPEC...PAPAGAYO...AND PANAMA THROUGH THE NEXT FEW 
DAYS...WITH WINDS OCCASIONALLY REACHING FRESH LEVELS IN PAPAGAYO 
DURING PEAK NOCTURNAL DRAINAGE FLOW.

$$ 
LEWITSKY


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Page last modified: Thursday, 24-Apr-2014 15:38:52 UTC