000
AXPZ20 KNHC 230905
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT APR 23 2011

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...

AXIS IS CENTERED ALONG 04N77W TO 03N82W TO 08N96W TO 04N105W TO 
01N140W WITH SCATTERED MODERATE AND ISOLATED STRONG CONVECTION 
NOTED WITHIN 90 NM N OF THE AXIS BETWEEN 112W AND 120W.

...DISCUSSION...

HIGH PRESSURE 1023 MB IS CENTERED OVER THE FAR NW PART OF THE 
AREA NEAR 24N137W HAS RIDGE EXTENDING SE TO NEAR 13N106W. THE 
PRES GRADIENT BETWEEN THE RIDGE AND A TROUGH OF LOW PRESSURE 
OVER MEXICO IS SUPPORTING NW WINDS OF 20 KT N OF 24N E OF 117W 
TO THE W COAST OF BAJA CALIFORNIA. THE PRES GRADIENT BETWEEN THE 
RIDGE AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS 
SUPPORTING NE TO E 20 KT TRADES FROM 07N TO 16N W 0F 130W. THE 
HIGH CENTER WILL SHIFT TO JUST WEST OF THE AREA OVER THE NEXT 24 
HOURS...WITH THE RIDGE MAINTAINING OVER THE SAME AREA THROUGH 
THE FORECAST PERIOD. THIS WILL MAINTAIN THE FRESH 20 KT NW FLOW 
OFF THE COAST OF BAJA CALIFORNIA...AND MAINTAIN THE FRESH 20 KT 
TRADEWINDS OVER THE SAME GENERAL AREA W OF 130W. 

CROSS EQUATORIAL SW SWELL WITH SEAS TO 8 FT CONTINUE TO AFFECT 
THE AREA S OF 05N BETWEEN 94W AND 118W. SEAS WILL DIMINISH BELOW 
8 FT TONIGHT. 

$$
AL