000
AXPZ20 KNHC 090953
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT SEP 9 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 
0800 UTC.

...TROPICAL WAVES...
TROPICAL WAVE ALONG 85W N OF 5N MOVING W 15 KT. NO SIGNIFICANT
CONVECTION ASSOCIATED WITH THIS WAVE.   

TROPICAL WAVE ALONG 93W N OF 4N MOVING W 10 KT. CONVECTION IS 
FLARING SE OF A WEAK EMBEDDED CYCLONIC CIRCULATION NEAR 9N.

...ITCZ...
AXIS 10N85W 7N95W 13N120W 9N130W 10N140W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION WITHIN 120 NM OF AXIS BETWEEN 88W AND 
113W. ISOLATED MODERATE TO STRONG CONVECTION WITHIN 60 NM OF 
4N78W AND 15N99W.

...DISCUSSION...
WEAK UPPER LEVEL TROUGH ALONG 132W EXTENDS TO AN UPPER LOW NEAR 
20N136W THEN CONTINUES TO 12N140W. VERY DRY AIRMASS N OF 15N 
INTERRUPTED BY MOIST SWATH ALONG ITCZ S OF 12N. LARGE STABLE AIR 
MASS EVIDENCED BY STRATOCUMULUS FIELD AT LOW LEVELS REACHES TO 
THE REMNANTS OF KRISTY NEAR 15N132W. EXCEPT FOR A FEW BURSTS OF 
CONVECTION THIS 1010 MB LOW CONTINUES ITS SLOW DISSIPATION.

A BROAD UPPER LEVEL ANTICYCLONE IS CENTERED NEAR 20N118W WITH A 
RIDGE EXTENDING TO 23N107W THEN WELL E OF 85W N OF 10N. ABUNDANT 
TROPICAL LOW LEVEL MOISTURE PRIMARILY ASSOCIATED WITH ITCZ IS S 
OF THE RIDGE AXIS ALTHOUGH WEAK SUBSIDENCE ALOFT IS HELPING TO 
KEEP MOST OF THE DEEP ITCZ CONVECTION S OF 12N.

$$
MUNDELL