000
AXPZ20 KNHC 180335
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN MAY 18 2008

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 
0300 UTC.

...TROPICAL WAVES...

A TROPICAL WAVE EXTENDING ALONG 80W FROM 03N INTO PANAMA IS 
MOVING WESTWARD AT 10 KT. MINIMAL CONVECTION IS ASSOCIATED WITH 
THIS FEATURE.

...ITCZ...

ITCZ AXIS IS ALONG 04N77W TO 09N100W TO 07N117W TO 08N129W TO 
04N140W. SCATTERED STRONG CONVECTION IS LOCATED WITHIN 120 NM 
EITHER SIDE OF A 03N85W TO 08N97W LINE. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION IS LOCATED FROM 08N TO 12N BETWEEN 
104W AND 114W. 

...DISCUSSION...

W OF 100W...
A WELL-DEFINED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS 
CENTERED AT 26N139W AND IS MOVING SLOWLY NW. CYCLONIC FLOW IS 
LOCATED N OF ABOUT 18N W OF 132W TO NEAR 145W. WIND SPEEDS 
SURROUNDING THE CIRCULATION ARE IN THE 60 TO 70 KT RANGE. 
FURTHER EAST A LARGE MIDDLE/UPPER LEVEL TROUGH OVER THE SW 
UNITED STATES CONTINUES SOUTHWARD TO 18N BETWEEN 100W AND 125W 
AND INCLUDES MOST OF MEXICO. A JET AROUND THE SOUTHERN PERIPHERY 
OF THE TROUGH IS LOCATED FROM 24N120W TO 21N115W THROUGH THE 
MEXICAN COAST AT 22N. SATELLITE CLOUD DRIFT WINDS ALONG THE JET 
AXIS ARE 60 TO 65 KT. SOUTH OF 18N MODERATE SOUTHERLY WINDS 
ALOFT ARE LOCATED W OF 120W AND BECOME SOUTHWESTERLY AND 
SLIGHTLY LOWER N OF 12N BETWEEN 100W AND 120W. AT THE SURFACE 
SOUTHERLY SWELLS TO 9 FEET ARE LOCATED S OF A LINE FROM 00N135W 
TO 08N120W TO 05N100W TO 00N94W. THE SWELLS WILL SPREAD 
NORTHWARD OVER THE NEXT 24 TO 48 HOURS.

E OF 100W...
OVER THE E PART OF THE DISCUSSION AREA EASTERLY WINDS ALOFT ARE 
LIGHT TO OCCASIONAL MODERATE.  

$$
CAB