000
AXPZ20 KNHC 231525
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED FEB 23 2011

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1300 UTC.

...ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ANALYZED FROM 1010 MB 
LOW PRES NEAR 04N79W TO 06N86W TO 01N100W TO 05N120W TO 05N140W. 
SCATTERED MODERATE CONVECTION FROM 02N TO 05N E OF 80W.    

...DISCUSSION...

ALOFT...A CUT-OFF LOW IS LOCATED ALONG THE COAST OF S CALIFORNIA 
NEAR 33N118W MOVING E. A 90 KT TO 20 KT JETSTREAM IS SW OF THE 
UPPER LEVEL LOW E OF 120W OVER BAJA CALIFORNIA AND N MEXICO. AN 
UPPER LEVEL TROUGH IS ALSO N OF 10N BETWEEN 110W AND 140W WITH 
STRONG SUBSIDENCE. THIS UPPER LEVEL TROUGH IS SUPPORTING A 
SURFACE LOW AND COLD FRONT. AN UPPER LEVEL HIGH IS CENTERED OVER 
THE TROPICAL E PACIFIC NEAR 08N97W. UPPER LEVEL ANTICYCLONIC 
FLOW IS FROM EQUATOR TO 20N BETWEEN 85W AND 110W WITH STRONG 
SUBSIDENCE. AN INVERTED UPPER LEVEL TROUGH IS OFF THE COAST OF 
COLOMBIA E OF 85W S OF 10N. THIS TROUGH IS SUPPORTING A SURFACE 
LOW EMBEDDED IN THE ITCZ.

AT THE SURFACE...A 1015 MB LOW IS CENTERED NEAR 28N121W. A COLD 
FRONT EXTENDS FROM THE LOW TO 27N119W TO 25N120W TO 22N125W TO 
21N130W. 20 TO 25 KT WINDS ARE W OF THE FRONT WITH MAXIMUM SEA 
HEIGHTS TO 12 FT IN NW SWELL. THE LOW PRES AND COLD FRONT WILL 
DISSIPATE IN ABOUT 24 HOURS. 

FURTHER S...20 KT TRADEWINDS WITH 08 TO 10 FT SEAS ARE ROUGHLY 
FROM 05N TO 20N W OF 128W AND WILL PERSIST FOR THE NEXT 48 
HOURS. 

GAP WINDS...
GULF OF PAPAGAYO...NE WINDS OF 20 KT CONTINUE TO FUNNEL THROUGH 
THE GULF OF PAPAGAYO. THIS FLOW WILL CONTINUE TO PULSE OVER THE 
NEXT FEW DAYS...ESPECIALLY IN THE EARLY MORNING HOURS WHEN 
DRAINAGE FLOW FROM LAND IS AT A MAXIMUM.

$$
FORMOSA