000
AXPZ20 KNHC 270935
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI MAY 27 2011

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.
 
...ITCZ...
AXIS EXTENDS FROM 14N90W TO 07N120W TO 06N140W. SCATTERED 
MODERATE CONVECTION WITHIN 30 NM OF AXIS BETWEEN 95W AND 99W... 
AND WITHIN 60 NM OF AXIS BETWEEN 115W AND 124W.

...DISCUSSION...

PERSISTENT LOW PRES TROUGH OVER MEXICO IN COMBINATION WITH HIGH 
PRES RIDGE ALONG 30-31N ANCHORED BY 1029 MB HIGH NEAR 32N139W IS 
PRODUCING FRESH NW WINDS W OF THE BAJA CALIFORNIA COAST AND SEAS 
GREATER THAN 8 FT. THIS PATTERN SHOWS LITTLE VARIATION THROUGH 
SAT THEN A WEAKENING LOW ALONG THE CALIFORNIA COAST WILL INCREASE
WINDS N OF THE AREA TO NEAR-GALE FORCE WHICH WILL PUSH HIGHER NW 
SWELLS TO 12-13 FT N OF 28N W OF 120W BY SAT NIGHT. HIGH PRES 
RIDGE ALONG 30N WILL ALSO MAINTAIN MODERATE TO FRESH E-NE TRADE 
WINDS W OF 125W BETWEEN 10N AND 20N.

CONVECTION ASSOCIATED WITH THE ITCZ IS RELATIVELY LIGHT DUE TO 
UPPER LEVEL RIDGE CENTERED NEAR 15N115W. S TO SW MONSOON WINDS 
CONTINUE E OF AROUND 112W WITH NO ORGANIZED LOW LEVEL CYCLONIC 
CIRCULATIONS EVIDENT IN EITHER SAT IMAGERY OR SCATTEROMETER DATA.

INITIAL SURGE OF LARGE CROSS-EQUATORIAL SW LONG PERIOD SWELL HAS 
INCREASED SEAS TO 8-9 FT S OF 09N W OF 95W. ANOTHER SURGE OF S 
SWELL IS EXPECTED TO INCREASE SEAS FURTHER BY SAT NIGHT AND SUN 
TO AROUND 10-11 FT S OF 05N BETWEEN 95W AND 120W.

$$
MUNDELL