000
AXPZ20 KNHC 031513
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH ALONG 04N90W TO 04N95W. ITCZ FROM 04N95W TO 
04N110W TO 08N120W TO 08N130W TO 10N136W TO 08N140W. NO 
SIGNIFICANT CONVECTION.

...DISCUSSION...
UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 19N137W. 
SCATTERED SHOWERS ARE FROM 14N-30N E OF THE CYCLONIC CIRCULATION 
TO 124W. A 110 KT JETSTREAM IS WITHIN 180 NM OF THE W SIDE OF 
THE LOW. AN UPPER LEVEL RIDGE IS E OF THE TROUGH WITH AXIS FROM 
00N118W TO N MEXICO AT 27N100W. ANOTHER UPPER LEVEL CYCLONIC 
CIRCULATION IS CENTERED NEAR 10N96W. STRONG SUBSIDENCE WITH 
DRY AND STABLE IS ACROSS THE AREA S OF 20N E OF 124W. 

GALE FORCE WINDS CONTINUE TO BLOW THROUGH THE GULF OF 
TEHUANTEPEC. THE WINDS ARE FORECAST TO DECREASE TO BELOW GALE 
FORCE MON MORNING AND LESS THEN 20 KT MON NIGHT.

A 1010 MB LOW PRES IS CENTERED NEAR 19N138W. WINDS 20-30 KT ARE  
WITHIN 560 NM OF THE LOW CENTER. OTHERWISE LARGE NW SWELL UP TO 
12 FT ARE W OF A LINE 30N120W TO 20N120W TO 03N140W. THE LOW IS 
FORECAST TO WEAKEN TO A TROUGH MON MORNING. 08 FT TO 10 FT SWELL 
ARE TO CONTINUE UNTIL TUE MORNING W OF LINE 30N116W TO 10N116W.

ELY WINDS IN THE 20-25 KT RANGE CONTINUE THROUGH THE GULF OF 
PAPAGAYO. THE WINDS ARE FORECAST TO FINALLY DECREASE TO LESS 
THAN 20 KT LATE TUE MORNING.

$$
FORMOSA