000
AXPZ20 KNHC 181507
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED JUN 18 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 
1500 UTC.

...TROPICAL WAVES...
TROPICAL WAVE N OF 11N ALONG 91W INTO GUATEMALA. MODERATE TO 
STRONG CONVECTION FROM 10N-12N BETWEEN 88W AND 91W.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE 5N86W 12N100W 11N105W 12N110W 
7N130W 6N140W. SCATTERED MODERATE TO STRONG CONVECTION FROM 08N 
TO 09N BETWEEN 100W AND 118W AND FROM 08N TO 13N BETWEEN 130W 
AND 137W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM 32N137W 20N135W TO 5N132W. A 
40-50 KT SLY WIND MAX IS ADVECTING UPPER LEVEL MOISTURE FROM THE 
ITCZ NORTHWARD. BROAD MID/UPPER LEVEL ANTICYCLONIC CIRCULATION
IS CENTERED OVER NW MEXICO NEAR 28N108W. UPPER LEVEL TROUGH WITH 
AXIS FROM THE SW GULF OF MEXICO ACROSS CENTRAL MEXICO TO WEAK 
CYCLONIC CIRCULATION NEAR 10N111W. UPPER LEVEL DIFFLUENT FLOW 
BETWEEN THE CYLONIC CIRCULATION AND AN ANTICYCLONIC CIRCULATION 
CENTERED NEAR 13N97W IS ENHANCING CONVECTIVE ACTIVITY ALONG THE 
ITCZ FROM 100W TO 118W. 

A COUPLE OF SURFACE TROUGHS ARE ANALYZED ALONG THE ITCZ ONE FROM 
14N101W TO 7N102W. SCATTERED MODERATE TO STRONG CONVECTION 
ASSOCIATED WITH THE TROUGH FROM 10N-15N BETWEEN 100W-105W. 
SECOND TROUGH EXTENDS FROM 14N113W TO 6N114W. A FEW SHOWERS AND 
TSTMS ARE WITHIN 60 NM EITHER SIDE OF TROUGH. OTHERWISE BROAD 
SURFACE HIGH COVERS THE AREA N OF 16N W OF 115W. BROKEN/OVERCAST 
STRATOCUMULUS CLOUDS ARE N OF 15N W OF 115W.

$$
DGS