000
AXPZ20 KNHC 200905
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE JUN 20 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...TROPICAL WAVES...
TROPICAL WAVE ALONG 102W FROM 4N TO 14N MOVING W 10 KT. ISOLATED 
MODERATE CONVECTIVE WITHIN 90 NM EITHER SIDE OF WAVE FROM 
7N-12N.

TROPICAL WAVE ALONG 112W FROM 4N TO 12N MOVING W 10 KT. 
SCATTERED MODERATE TO STRONG CONVECTION FROM 7N-12N BETWEEN 
108W-113W. CONVECTION ASSOCIATED WITH LOW PRES 11N114W MERGING 
WITH WAVE.

TROPICAL WAVE ALONG 132W FROM 5N TO 14N MOVING W 10 KT. NO 
SIGNIFICANT CONVECTION WITH THIS WAVE.

..ITCZ...
AXIS ALONG...7N78W 6N90W 9N110W 3N125W 5N135W 4N140W.  SCATTERED 
MODERATE TO STRONG WITHIN 240 NM S OF AXIS E OF 80W AND WITHIN 
70 NM EITHER SIDE OF AXIS FROM 91W TO 96W AND 140 NM EITHER SIDE 
OF AXIS FROM 108W TO 113W.

...DISCUSSION...
MID/UPPER LEVEL TROUGH COVERS THE AREA N OF 15N W OF 130W WITH 
LARGE UPPER LEVEL CYCLONIC CIRCULATION CENTERED NEAR 22N135W. 
STRONG SUBSIDENCE WITH DRY AIR AT THE MID AND UPPER LEVELS OF 
THE ATMOSPHERE COVERS THE AREA N OF 15N W OF 128W. HOWEVER AT 
THE LOW LEVELS BROKEN TO OVERCAST STRATUS AND STRATOCUMULUS IS N 
OF 17N W OF 115W.

VERY BROAD ANTICYCLONIC CIRCULATION CENTERED 22N112W COVERS THE 
AREA N OF 10N BETWEEN 100W AND 130W. UPPER LEVEL DIFFLUENT FLOW 
S ANTICYCLONIC CIRCULATION IS ENHANCING CONVECTIVE ACTIVITY 
ALONG THE ITCZ FROM 108W TO 118W. 

LOW PRES 1010 MB 11N114W. SCATTERED MODERATE TO STRONG 
CONVECTION FROM 10N TO 13N BETWEEN 115W AND 118W. THE CONVECTIVE 
ACTIVITY HAS INCREASED OVER THE PAST FEW HOURS AND AS THE LOW 
MOVES WWD CONDITIONS ALOFT MAY BECOME MORE FAVORABLE TROPICAL 
CYCLONE DEVELOPMENT.

HIGH PRES RIDGES COVERS THE AREA N OF 15N W OF 115W.

$$
DGS