000
AXPZ20 KNHC 252215
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN MAY 25 2008

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1530 UTC.

...TROPICAL WAVES...

TROPICAL WAVE PREVIOUSLY ANALYZED OVER LAND 90W APPEARS ONLY IN 
DATA OVER THE GULF OF MEXICO AND THEREFORE WILL BE DROPPED FROM 
THE ANALYSIS IN THE E PAC. A BROAD AREA OF SW TO W WINDS 
CONTINUE OVER THE WATERS FROM 05N TO 11N BETWEEN 90W AND 102W. 
GLOBAL MODELS ARE FORECASTING A BROAD AREA OF LOW PRESSURE TO 
DEVELOP NEAR 10N90W OVER THE NEXT SEVERAL DAYS.  
 
...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...02N88W TO 
08N105W TO 11N125W TO 03N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION IS NOTED WITHIN 180 NM EITHER SIDE OF AXIS 
BETWEEN 92W AND 102W. SCATTERED MODERATE CONVECTION IS OBSERVED 
WITHIN 120 NM S OF THE AXIS BETWEEN 102W AND 110W...AND N OF 03N 
E OF 82W TO COLOMBIA AND PANAMA. 

...DISCUSSION...

A DEEP LAYERED CYCLONE IS CENTERED NEAR 38N122W WITH AN UPPER 
SHORTWAVE TROUGH EXTENDING S INTO THE DISCUSSION AREA ALONG 
32N118W TO 10N115W. A TROPICAL UPPER ANTICYCLONE IS NEAR 10N132W 
WITH A SHORTWAVE RIDGE EXTENDING NE TO A CREST AT 15N121W. A 
SECOND UPPER ANTICYCLONE IS NEAR 17N104W WITH ITS ENVELOP OF 
ANTICYCLONIC FLOW DOMINATING THE REMAINDER OF THE DISCUSSION 
AREA W OF 110W. AN UPPER CYCLONE IS DEVELOPING OVER THE YUCATAN 
PENINSULA AT 20N91W OTHER A BROAD UPPER RIDGE EXTENDS W OF 
NORTHWESTERN S AMERICA OVER THE TROPICS E OF 100W. 

UPPER DIFFLUENCE IS ENHANCING CONVECTION ALONG THE ITCZ E OF 
110W WITH THE DEBRIS MOISTURE REMAINING S OF 15N E OF 120W. 
ELSEWHERE THE UPPER LEVELS APPEAR VERY DRY.  

AT THE SURFACE A RIDGE EXTENDS INTO THE AREA FROM 32N140W TO 
12N117W. NORTHERLY SWELLS TO 9 FEET CONTINUE OVER A LARGE PART 
OF THE AREA N OF 08N W OF 105W. THESE SWELLS ARE DIMINISHING AND 
SHOULD BE LESS THAN 8 FEET WITHIN 48 HOURS OR SO. 

$$
NELSON