000
AXPZ20 KNHC 081509
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN JUN 08 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 ACROSS HONDURAS AND EL SALVADOR N OF 11N ALONG 88W 
MOVING W 10-15 KT. SCATTERED SHOWERS ARE OVER HONDURAS AND EL 
SALVADOR AND FROM 10N-13N BETWEEN 88W-91W.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 6N77W 6N90W 11N100W 08N115W 05N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 120 NM S OF 
AXIS FROM 77W-81W. SCATTERED MODERATE CONVECTION WITHIN 90 NM N 
OF AXIS FROM 123W-125W.

...DISCUSSION...
AN UPPER LOW IS CENTERED NEAR 20N133W WITH TROUGH EXTENDING FROM 
THE LOW SE TO 5N120W. MODERATE TO STRONG SUBSIDENCE WITH DRY AIR 
AT THE MID/UPPER LEVELS OF THE ATMOSPHERE COVERS THE AREA W OF 
120W SUPPRESSING CONVECTIVE ACTIVITY..EXCEPT FOR SCATTERED 
MODERATE CONVECTION ALONG THE ITCZ FROM 123W-125W. UPPER LEVEL
ANTICYCLONIC CYCLONIC CIRCULATION OVER CENTRAL MEXICO NEAR 
19N99W WITH RIDGE EXTENDING NE TO CENTRAL TEXAS AND SECOND RIDGE 
EXTENDS NW ACROSS SOUTHERN BAJA CALIFORNIA THEN WNW TO 29N123W.
UPPER LEVEL DIVERGENT FLOW S OF THE ANTICYCLONE IS AIDING 
CONVECTIVE ACTIVITY ASSOCIATE WITH A 1007 MB SURFACE LOW JUST 
OFF THE COAST OF MEXICO NEAR 15N107W. THIS FEATURE HAS 
DEMONSTRATED PERSISTENT CYCLONIC CURVATURE ON SATELLITE IMAGERY 
AND SHIP REPORT INDICATE A BROAD CIRCULATION. THE SOUTHERN END
OF A MID/UPPER LEVEL TROUGH OVER THE INTER-MOUNTAIN WEST EXTENDS 
ACROSS NORTHERN BAJA CALIFORNIA TO 31N122W.

SURFACE RIDGE WITH AXIS FROM 32N137W TO 20N121W. A LARGE AREA OF 
MOSTLY OVERCAST STRATOCUMULUS CLOUDS COVERS THE AREA N OF 12N W 
OF 110W. A 1006 MB LOW IS ANALYZED OVER THE NORTHERN GULF OF 
CALIFORNIA NEAR 32N114W.

$$
DGS