000
AXPZ20 KNHC 272133
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI JUL 27 2007

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.

...TROPICAL WAVES...
TROPICAL WAVE ALONG 106W FROM 6N TO 17N MOVING W 10 KT. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED FROM 7N 
TO 16N BETWEEN 105W AND 110W. LATEST VISIBLE IMAGERY INDICATES A 
BROAD AREA OF CYCLONIC TURNING WITHIN TWO TO THREE DEGREES 
EITHER SIDE OF THE WAVE AXIS.      

...ITCZ...
ITCZ AXIS ALONG 9N83W 11N104W 6N117W AND THEN FROM 15N118W 
10N130W 10N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION 
WITHIN 90 NM EITHER SIDE OF A 7N78W 8N87W LINE AND FROM 7N TO 
16N BETWEEN 105W AND 110W.    

...DISCUSSION...
N OF 20N...
A MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED JUST WEST 
OF THE DISCUSSION AREA NEAR 31N143W. A TROUGH AXIS EXTENDS SOUTH 
FROM THE CYCLONIC CIRCULATION TO 22N142W WITH SOUTHERLY FLOW 
LOCATED EAST OF THE AXIS TO ABOUT 135W. FURTHER EAST A LARGE 
MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED IN THE 
VICINITY OF 25N121W...MOVING WEST 10 TO 15 KNOTS. CYCLONIC FLOW 
COVERS THE AREA NORTH OF 20N BETWEEN 115W AND 130W. AT THE 
SURFACE THE REMNANTS OF DALILA ARE CENTERED NEAR 23N118W. THE 
CIRCULATION IS DEVOID OF ANY DEEP CONVECTION BUT THE LATEST 
VISIBLE IMAGERY INDICATES A WELL-DEFINED SWIRL OF LOW LEVEL 
CLOUDS UP TO THREE DEGREES FROM THE CENTER WITH WINDS ESTIMATED 
AT 20 TO 25 KNOTS.

S OF 20N...
WATER VAPOR IMAGERY SHOWS A LARGE AREA OF SUBSIDENCE BETWEEN 
115W TO BEYOND 140W. FURTHER EAST...THE FLOW ALOFT IS EASTERLY 
TO THE MEXICAN AND CENTRAL AMERICA COAST. THIS INCLUDES THE AREA 
IN THE VICINITY OF THE TROPICAL WAVE ALONG 106W.

$$
CAB