000
AXPZ20 KNHC 010401
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI APR 01 2011

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 0330 UTC.

...ITCZ...

AXIS CENTERED ALONG 7N80W 2N95W 4N112W TO 4N130W 3N140W. 
SCATTERED MODERATE CONVECTION IS WITHIN 30 NM N OF AXIS BETWEEN
91W-93W.

...DISCUSSION...

UPPER LEVEL CUT-OFF CYCLONIC CIRCULATION OVER THE NW PORTION OF 
THE DISCUSSION AREA NEAR 25N138W WITH A WEAK TROUGH EVIDENT NEAR 
THE SURFACE FROM 14N140W TO 23N137W. BROKEN TO OVERCAST MID AND 
UPPER LEVEL CLOUDS ARE ROTATING AROUND THE CIRCULATION BUT VERY 
LITTLE OTHER THAN TRADE WIND STRATOCUMULUS NEAR THE SURFACE.

CONVECTIVE ACTIVITY REMAINS MINIMAL ACROSS THE REGION. MOST OF 
THE LOW LEVEL CONVERGENCE IS CROSS-EQUATORIAL W OF 115W...WITH A
MORE ACTIVE ITCZ EVIDENT IN THE SOUTHERN HEMISPHERE.

WEAK HIGH PRES NEAR 34N140W CONTINUES TO WEAKEN...AND AS A RESULT
THE PRES GRADIENT IS EASING W OF 130W. LATEST ASCAT PASS SHOWS 
WINDS LESS THAN 20 KT OVER ALL THE DISCUSSION AREA. WW3 WAVE 
MODEL GUIDANCE SHOWS A SURGE OF LONG PERIOD 17-18 SEC NW SWELL 
REACHING THE EXTREME NW PORTION LATER TONIGHT WITH MAX SEAS TO 
12-13 FT. SWELL WILL PROPAGATE FURTHER SW TO AROUND 115W BY SAT 
EVENING WITH SEAS DIMINISHING TO 9-10 FT. THE REMAINDER OF
THE AREA REMAINS THAT QUIET. 

$$
MUNDELL