000
AXPZ20 KNHC 061504
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN MAY 06 2007

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
AXIS IS CENTERED ALONG 6N78W 11N100W 10N115W 5N140W. SCATTERED 
MODERATE TO STRONG CONVECTION FROM 2N TO 5N E OF 81W AND 5N TO 
7N BETWEEN 87W AND 98W AND FROM 8N TO 13N BETWEEN 105W AND 120W 
AND FROM 5N TO 8N BETWEEN 127W AND 140W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE OVER THE NW PORTION OF THE DISCUSSION 
AREA N OF 25N W OF 127W. MODERATE TO STRONG SUBSIDENCE...WITH
DRY AIR AT THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE
IS N OF 20N W OF 130W. A STRONG MID/UPPER LEVEL CYCLONIC 
CIRCULATION OVER THE SW U.S. WITH TROUGH EXTENDING SWD FROM
THE CIRCULATION TO THE NORTHERN GULF OF CALIFORNIA TO 20N119W. 
AN E TO W RIDGE IS S OF 20N BETWEEN 90W AND 116W WITH AXIS FROM 
10N90W TO ANTICYCLONIC CIRCULATION NEAR 8N102W TO 10N116W. UPPER 
LEVEL DIFFLUENCE IS AIDING CONVECTIVE ACTIVITY ALONG THE ITCZ 
WITHIN THE RIDGE.

A SURFACE TROUGH IS ANALYZED ALONG THE ITCZ FROM 13N116W TO 
7N122W. A 1008 MB SURFACE LOW OVER THE CENTRAL GULF OF 
CALIFORNIA NEAR 27N111W. NO SIGNIFICANT WEATHER IS ASSOCIATED 
WITH THE LOW. A LARGE AREA OF BROKEN TO OVERCAST STRATUS AND 
STRATOCUMULUS CLOUDS COVER THE AREA N OF THE ITCZ W OF 110W.

$$
DGS