000
AXPZ20 KNHC 092159
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL 
HURRICANE CENTER MIAMI FL
2205 UTC WED AUG 09 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2245 UTC.

...TROPICAL WAVES...

A TROPICAL WAVE ALONG 134W TO THE N OF 4N HAS MOVED W 12 KT OVER 
THE PAST 24 HOURS. CONVECTION IS FLARING WITHIN 60 NM OF THE 
WAVE FROM 8N TO 14N WITH BROAD CYCLONIC TURNING.

A TROPICAL WAVE ALONG 121W TO THE N OF 2N HAS MOVED W 12 KT 
DURING THE PAST 24 HOURS. SCATTERED MODERATE CONVECTION NOTED 
FROM 8N TO 16N WITHIN 90 NM OF THE WAVE AXIS.

A TROPICAL WAVE IS N OF 3N ALONG 87W AND HAS MOVED W AT ABOUT 18 
KT THE PAST 24 HOURS. CONVECTION IS ENHANCED ALONG THE ITCZ AT 
6N88W AND OVER NICARAGUA AND HONDURAS. 

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 9N78W 11N118W 10N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 180 NM EITHER SIDE OF LINE 7N79W 
12N123W 9N140W. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE 
FROM 12N TO 19N BETWEEN 100W AND 122W. 

...DISCUSSION...

AN UPPER ANTICYCLONE IS OVER N TEXAS AT 33N98W WITH A RIDGE 
EXTENDING W ALONG ALONG 33N TO 115W THEN THE RIDGE EXTENDS SW TO 
A CREST AT 21N140W. 

A SMALL UPPER CYCLONE IS NOTED NEAR 12N106W WITH AN INVERTED 
UPPER TROUGH EXTENDING N TO NEAR 20N106W. ANOTHER UPPER CYCLONE 
IS NOTED NEAR 18N122W AND IS SHIFTING SW WITH TIME. AN UPPER 
CYCLONE IS NEARLY STATIONARY AT 5N133W. AN UPPER ANTICYCLONE IS 
CENTERED NEAR 15N116W WITH A RIDGE N TO A CREST AT 20N113W. 
CONVECTION IS ENHANCED UNDER THE RIDGE. 

DRY UPPER AIR IS NOTED WITHIN 240 NM EITHER SIDE OF LINE 33N121W 
19N136W. OTHERWISE UPPER DEBRIS MOISTURE IS NOTED THROUGHOUT THE 
TROPICAL AREA.  

AT THE SURFACE...A RIDGE EXTENDS FROM 32N133W SE TO 21N110W. 
BROKEN STRATOCUMULUS CLOUDS ARE NOTED N OF 13N W OF 116W. 

GAPS WINDS...LATEST SSMI DATA INDICATES N TO NE WINDS TO 20 KT 
CONTINUE IN THE GULF OF TEHUANTEPEC...EXPECTED TO LAST ANOTHER 
12 HOURS OR SO. 
 
$$
NELSON