000
AXPZ20 KNHC 032129
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN FEB 03 2013

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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

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

THE MONSOON TROUGH IS ALONG 02N79W TO 05N91W TO 04N104W. THE 
INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 04N104W TO 
05N120W TO 09N130W. NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

1030 MB SURFACE HIGH PRESSURE N OF THE DISCUSSION WATERS NEAR 
37N133W EXTENDS A RIDGE INTO THE AREA THROUGH 32N126W TO 
16N110W. 1011 MB SURFACE LOW PRESSURE IS NEAR 18N139W WITH AN 
ARCING TROUGH EXTENDING FROM THE LOW THROUGH 15N135W TO 09N140W. 
FRESH TO STRONG WINDS ARE N OF THE LOW WHERE A TIGHT PRESSURE
GRADIENT BETWEEN THE LOW AND RIDGE IS PRESENT...ALONG WITH 
ANOTHER AREA OF FRESH TO STRONG WINDS ABOUT 240 NM E OF THE 
TROUGH. LARGE NW SWELL UP TO 17 FT IS IN THE AREA OF STRONGEST 
WINDS N OF THE LOW AS RECENTLY REPORTED BY SHIP A8KC6 IN THE 
AREA...WITH A SURROUNDING AREA OF NW SWELL OF 8 FT OR GREATER 
EXTENDING TO A LINE FROM 30N118W TO 10N120W TO 00N140W. THE LOW 
IS FORECAST TO DISSIPATE INTO A TROUGH DURING THE NEXT 24 
HOURS...MOVING W OF THE AREA BY 48 HOURS. ASSOCIATED WINDS AND 
SEAS WILL GREATLY DIMINISH AND SUBSIDE AS THE LOW DISSIPATES.

1027 MB SURFACE HIGH PRES OVER E CENTRAL MEXICO NEAR 22N99W 
EXTENDS A RIDGE TO THE SE NEAR THE CHIVELA PASS. A TIGHT 
PRESSURE GRADIENT BETWEEN THIS RIDGE AND LOWER PRES S OF THE 
GULF OF TEHUANTEPEC ASSOCIATED WITH THE MONSOON TROUGH CONTINUES 
TO SUPPORT MINIMAL GALE FORCE WINDS IN TEHUANTEPEC. THIS HIGH 
AND RIDGE WILL FINALLY BREAK DOWN OVERNIGHT TONIGHT ALLOWING FOR 
THE GALE FORCE WINDS TO DIMINISH BY MON MORNING...WITH 
CONDITIONS RAPIDLY DIMINISHING TO 20 KT OR LESS BY MON AFTERNOON.

FRESH TO STRONG WINDS WILL CONTINUE TO PULSE IN AND DOWNWIND OF 
THE GULF OF PAPAGAYO THROUGH MON NIGHT...DIMINISHING BY TUE 
MORNING AS TRADES E OF CENTRAL AMERICA WEAKEN.

$$
LEWITSKY