000
AXPZ20 KNHC 230329
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT AUG 23 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 
0315 UTC.

...TROPICAL WAVES...

A TROPICAL WAVE IS LOCATED N OF 04N ALONG 86W AND HAS BEEN 
MOVING W AT 15 KT OVER THE PAST 24 HOURS. ISOLATED CONVECTION IS 
ENHANCED WITHIN 120 NM OF THE WAVE AXIS AT 08N.

A TROPICAL WAVE IS LOCATED FROM 04N TO 16N ALONG 113W AND 
ESTIMATED TO BE MOVING W AT 15 KT. CYCLONIC TURNING IS NOTED 
FROM 08N TO 11N ALONG THE WAVE AXIS.

...ITCZ...

THE ITCZ AXIS EXTENDS ALONG 08N78W TO 08N88W TO 12N98W TO 
11N114W TO 13N126W TO 07N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION NOTED WITHIN 90 NM OF 08N85W AND ALSO WITHIN 
150 NM EITHER SIDE OF LINE FROM 12N100W TO 09N113W TO 10N122W 
AND ALSO WITHIN 90 NM OF 09N135W.

...DISCUSSION...

AN UPPER LEVEL ANTICYCLONE IS CENTERED NEAR 27N129W WITH A RIDGE 
E TO A CREST AT 31N117W. AN UPPER CYCLONE STATIONARY OVER OLD 
MEXICO NEAR 29N109W HAS A TROUGH EXTENDING SW TO ANOTHER UPPER 
CYCLONE AT 15N114W. CONVECTION IS ENHANCED OVER CENTRAL OLD 
MEXICO AND OVER THE PACIFIC NEAR 17N107W. UPPER LEVEL E WINDS S 
S OF THE RIDGE ARE ADVECTING THE DEBRIS MOISTURE SW OVER THE 
DISCUSSION AREA TO THE S OF 22N BETWEEN 98W AND 117W. DEBRIS 
MOISTURE FORM THE ITCZ CONVECTION...AND THE CONVECTION THAT 
FLARES NEAR THE ISELLE REMNANT LOW AT 13N125.5W...REMAINS S OF 
18N BETWEEN 98W 138W. OTHERWISE VERY DRY UPPER AIR DOMINATES THE 
DISCUSSION AREA N OF 18N W OF 114W. AT THE LOW LEVELS LOCALLY 
BROKEN STRATOCUMULUS IS NOTED N OF 19N W OF 116W.

SOUTHERLY SWELLS CONTINUE TO SPREAD N ACROSS THE EQUATOR TO 
ALONG 12N W OF 95W.

$$
NELSON