000
AXPZ20 KNHC 010320
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU JUN 01 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.

...TROPICAL WAVES...

A TROPICAL WAVE ALONG 106W N OF 2N IS DIFFICULT TO IDENTIFY BUT 
CONVECTION ALONG THE THE ITCZ IS ENHANCED NEAR 106W.

..ITCZ...

ITCZ AXIS IS CENTERED ALONG...8N78W 11N97W 6N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 120 NM EITHER SIDE OF LINE 6N77W 
6N92W 10N98W 9N117W AND WITHIN 30 NM OF AXIS W OF 130W.

...DISCUSSION...

A SHORTWAVE TROUGH LIES ALONG 32N130W 21N127W. A SECOND 
SHORTWAVE LIES ALONG 32N104W 21N95W. AN UPPER ANTICYCLONE IS 
NEAR 13N120W WITH A RIDGE EXTENDING SW TO BEYOND 9N140W. A RIDGE 
ALSO EXTENDS E TO A CREST NEAR 13N94W. THE ASSOCIATED 
ANTICYCLONIC FLOW CRESTS ALONG POINTS 15N136W 24N122W 19N100W. 
RESULTANT DRY UPPER AIR IS INDICATED WITHIN 270 NM EITHER SIDE 
OF LINE 18N140W 26N122W 22N106W. DEBRIS MOISTURE FROM ITCZ 
CONVECTION W OF 85W IS ADVECTED ENE BUT REMAINS UNDER THE RIDGE 
EXCEPT FOR A PLUME THAT TURNS N OVER THE W GULF OF MEXICO ALONG 
18N92W 25N90W.

AT THE LOW LEVELS A HIGH PRES IS AT 29N134W 1021 MB WITH RIDGE 
SE TO 13N110W. SCATTERED TO LOCALLY BROKEN STRATOCUMULUS IS 
OBSERVED N OF 16N W OF 122W. 

AN UPPER ANTICYCLONE IS CENTERED OVER S AMERICA AT 13S63W WITH A 
RIDGE EXTENDING NW TO A CREST OVER PANAMA. UPPER DIFFLUENCE 
UNDER THIS RIDGE ENHANCED CONVECTION ALONG THE ITCZ E OF 82W 
WITH THE DEBRIS MOISTURE SPREADING NE ACROSS THE CENTRAL 
CARIBBEAN. AN UPPER TROUGH EXTENDS S ALONG 80W TO NEAR COSTA 
RICA. 

$$
NELSON