000
AXPZ20 KNHC 220908
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI APR 22 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 06N77W TO 03N118W TO 04N123W TO 05N132W 
TO 04N140W WITH SCATTERED MODERATE CONVECTION NOTED WITHIN 210 
NM N OF AXIS BETWEEN 109W AND 117W. 

...DISCUSSION...

HIGH PRESSURE 1024 MB IS CENTERED OVER THE FAR NW PART OF THE 
AREA NEAR 27N136W WITH RIDGE EXTENDING SE TO NEAR 16N112W. THE 
PRESSURE GRADIENT BETWEEN THE RIDGE AND A TROUGH OF LOW PRESSURE 
OVER MEXICO IS SUPPORTING FRESH 20 KT NW WINDS N OF 24N E OF 
118W TO THE COAST OF BAJA CALIFORNIA. THESE WINDS WERE DEPICTED 
ON THE RECENT 0522 UTC ASCAT PASS. IN ADDITION...THE PRESSURE 
GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE IN THE VICINITY OF 
THE ITCZ IS SUPPORTING FRESH 20 KT NE TO E TRADEWINDS FROM 07N 
TO 18N W 0F 130W AND FROM 10N TO 15N BETWEEN 120W AND 130W. THE 
HIGH PRESSURE AND RIDGE WILL GENERALLY REMAIN OVER THE SAME 
VICINITY...MAINTAINING THE AREA OF FRESH TRADEWINDS W OF 130W 
AND FRESH NW WINDS OFF THE COAST OF BAJA CALIFORNIA. 

LONG PERIOD CROSS-EQUATORIAL SW SWELL...WITH COMBINED SEAS OF 8 
FT...CONTINUES TO AFFECT THE CENTRAL WATERS S OF 06N. THESE 
SWELLS WILL CONTINUE THROUGH SATURDAY AFTERNOON...BEFORE 
DIMINISHING BELOW 8 FT SAT NIGHT. 

$$
AL