000
AXPZ20 KNHC 260326
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC MON MAY 26 2008

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.

...TROPICAL WAVES...

NONE.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...12N87W TO 
07N110W TO 10N128W TO 04N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION NOTED FROM 04N TO 14N BETWEEN 86W AND 102W.

...DISCUSSION...

A DEEP LAYERED CYCLONE IS CENTERED NEAR 38N122W HAS AN UPPER 
SHORTWAVE TROUGH EXTENDING S INTO THE DISCUSSION AREA ALONG 
32N118W TO 09N120W. A TROPICAL UPPER ANTICYCLONE IS NEAR 11N132W 
WITH A SHORTWAVE RIDGE EXTENDING NE TO A CREST AT 18N123W. A 
SECOND UPPER ANTICYCLONE IS NEAR 18N104W WITH ITS ENVELOP OF 
ANTICYCLONIC FLOW DOMINATING THE REMAINDER OF THE DISCUSSION 
AREA W OF 98W. AN UPPER CYCLONE IS DEVELOPING OVER THE YUCATAN 
PENINSULA AT 21N91W. OTHERWISE A BROAD UPPER RIDGE EXTENDS W OFF 
NORTHWESTERN S AMERICA OVER THE TROPICS TO THE E OF 98W. 

UPPER DIFFLUENCE IS ENHANCING CONVECTION ALONG THE ITCZ E OF 
103W WITH THE DEBRIS MOISTURE REMAINING S OF 15N E OF 120W WITH 
SOME SPREADING S OF THE EQ BETWEEN 102W AND 120W. ELSEWHERE THE
UPPER LEVELS APPEAR VERY DRY.  

AT THE SURFACE A RIDGE EXTENDS INTO THE AREA FROM 32N140W TO 
10N117W. NORTHERLY SWELLS TO 9 FEET CONTINUE OVER A LARGE PART 
OF THE AREA N OF 05N W OF 105W. THESE SWELLS ARE DIMINISHING AND 
SHOULD BE LESS THAN 8 FEET WITHIN 42 HOURS OR SO. 

A BROAD AREA OF SW TO W WINDS TO 20 KT CONTINUE OVER THE WATERS 
FROM 3N TO 08N BETWEEN 88W AND 110W. GLOBAL MODELS ARE 
FORECASTING A BROAD AREA OF LOW PRESSURE TO DEVELOP NEAR 10N90W 
OVER THE NEXT SEVERAL DAYS.  

$$
NELSON