000
AXPZ20 KNHC 261556
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT FEB 26 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 
1500 UTC.

...ITCZ...
AXIS FROM 08N81W TO 03N92W THEN FROM 03N105W TO 07N114W TO 
05N122W TO 05N140W.  ISOLATED MODERATE CONVECTION WITHIN 30 NM 
OF AXIS E OF 83W.

...DISCUSSION...
STRONG UPPER LEVEL CYCLONIC VORTEX AT 38N122W SUPPORTS HEALTHY 
COLD FRONT PRESENTLY FROM 32N118W TO 27N133W TO 29N140W.  STRONG 
N TO NW BREEZE ASSOCIATED WITH COLD FRONT ON BOTH SIDES OF 
BOUNDARY...INCLUDING GULF OF CALIFORNIA...EXTEND THROUGH SUN.  
VORTEX SHIFT NE WEAKENING FRONT AND DIMINISHING WINDS BY MON.  
FRESH NE TRADES ALSO DIMINISH SUN AS HIGH PRES RIDGE SETTLES 
FURTHER SOUTH IN WAKE OF FRONT MOVEMENT.   

BROAD MID TO UPPER LEVEL WELL ANCHORED ANTICYCLONE CENTERED OVER 
GUATEMALA COVER MOST OF BASIN S OF 20N E OF 130W WITH DRY AND 
STABLE SUBSIDING AIR MASS.  LITTLE IN WAY OF CONVECTION EVEN 
ALONG ITCZ. 

GULF OF PAPAGAYO STILL REMAINS WITH LINGERING FRESH NE BREEZE 
FROM NIGHTLY DOWNSLOPE DRAINING OF COOL MOUNTAIN AIR THROUGH MON.

GULF OF CALIFORNIA...COLD FRONT PUSH INTO N GULF OVERNIGHT WITH 
FRESH SW BREEZE AND NW WINDS BEHIND FRONTAL BOUNDARY.  SEAS 
REMAIN BELOW 8 FT THROUGH FORECAST PERIOD.

$$
WALLY BARNES