000
AXPZ20 KNHC 040936
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON JUN 04 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0930 UTC.

...ITCZ...
AXIS CENTERED ALONG 9N94W 11N95W 7N113W 11N122W 6N140W. 
SCATTERED MODERATE TO STRONG FROM 9N TO 13N BETWEEN 120W AND 
126W. SCATTERED MODERATE ISOLATED STRONG 90-120 NM WIDE BETWEEN 
99W AND 105W...AND W OF 137W. 

DISCUSSION...

W OF 110W...
MID TO UPPER LEVEL TROUGH WAS ENTERING THE FAR NW PORTION OF THE 
DISCUSSION AREA WITH AXIS ALONG 32N134W SWWD TO 29N141W. FEATURE 
WAS MOVING SE 15-20 KT AND PROVIDED SOME SUPPORT FOR A COLD 
FRONT EXTENDING FROM 30N136W SWWD TO 28N140W. RIDGE AXIS 
EXTENDED FROM AN ANTICYCLONE NEAR 26N123W SSEWD TO ANOTHER
CENTER NEAR 13N118W. UPPER LEVEL CYCLONIC CIRCULATION WAS 
LOCATED W OF THE AREA NEAR 16N145W. BROAD AREA OF SLY UPPER 
LEVEL FLOW EXISTED BETWEEN THE RIDGE AND CYCLONIC CIRCULATION 
GENERALLY FROM 10N TO 22N BETWEEN 120W AND 140W. ANTICYCLONIC 
FLOW WAS MORE DIFFLUENT IN THE VICINITY OF A SURFACE TROUGH...
THE REMNANT OF FORMER T.S. ALVIN...WHICH EXTENDED FROM 7N TO 15N 
ALONG 122W. THIS FLOW WAS ENHANCING THE DEVELOPMENT OF BANDED 
DEEP CONVECTION NEAR A POSSIBLE LOW LEVEL CENTER IN THE AREA. 
MODERATE TO STRONG SUBSIDENCE PREVAILED OVER THE AREA FROM 2ON 
TO 28N W OF 110W WITH A 1023 MB SURFACE HIGH NEAR 24N127W.      

E OF 110W...
BROADLY ANTICYCLONIC FLOW PREVAILED OVER THE TROPICAL PACIFIC E 
OF 110W WITH AXIS OF MID TO UPPER LEVEL RIDGE EXTENDING WWD 
ALONG 18N FROM A LARGE ANTICYCLONE OVER THE NW CARIBBEAN NEAR 
18N82W. DEEP LAYERED EASTERLY FLOW WAS ADVECTING MAINLY UPPER 
LEVEL CONVECTIVE DEBRIS FROM CENTRAL AMERICA WWD OVER THE 
PACIFIC. 

$$
FORECASTER COBB