000
AXPZ20 KNHC 220946
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN MAR 22 2009

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0915 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 05N77W TO 03N95W TO 01N110W TO 
01N125W TO 01N140W. NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

W OF 110W...
A LARGE WELL-DEFINED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS 
CENTERED ABOUT 700 NAUTICAL MILES E OF HAWAII NEAR 20N144W AND 
IS MOVING SLOWLY E AT ABOUT 5 TO 10 KNOTS. THE CIRCULATION IS 
FORECAST TO MOVE TO NEAR 27N134W IN 48 HOURS. A JET EXTENDS 
THROUGH 26N140W TO 29N130W INTO SOUTHERN CALIFORNIA. SATELLITE 
CLOUD DRIFT WINDS ALONG THE JET ARE AS HIGH AS 100 KNOTS. A 
LARGE AREA OF SOUTHWESTERLY TO WESTERLY WINDS ALOFT LIE S OF THE 
JET TO 15N AND ALSO S OF 15N TO THE EQUATOR W OF 120W. INFRARED 
SATELLITE IMAGERY INDICATES DENSE MIDDLE/UPPER LEVEL CLOUDS FROM 
ABOUT 12N TO 25N W OF 127W. AT THE SURFACE A RIDGE AXIS IS 
LOCATED THROUGH 32N140W TO NEAR 21N110W. THE RIDGE IS FORECAST 
TO STRENGTHEN OVER THE NEXT COUPLE OF DAYS WITH INCREASING WINDS 
AND BUILDING SEAS N OF ABOUT 10N W OF 110W. AN ALTIMETER PASS 
FROM THE JASON-2 SATELLITE INDICATES WAVE HEIGHTS TO 11 FEET 
ALONG A SWATH FROM 05N138W TO 10N140W.

E OF 110W...
WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE OVER THE E PART 
OF THE DISCUSSION AREA WITH GENERALLY MODERATE WESTERLY WINDS 
ALOFT. AT THE SURFACE A MINIMAL GALE IS OCCURRING OVER THE GULF 
OF TEHUANTEPEC...WINDS ARE FORECAST TO DROP BELOW GALE FORCE IN 
12 HOURS. NORTH WINDS IN THE 20 TO 25 KNOT RANGE ARE LOCATED 
OVER THE GULF OF PANAMA. 

$$
CAB