000
AXPZ20 KNHC 290927
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED OCT 29 2008

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 
0900 UTC.

...THE ITCZ...
AXIS ALONG 9N85W 6N95W 11N110W 10N120W 07N140W. SCATTERED 
MODERATE TO STRONG  CONVECTION FROM 08N TO 13N BETWEEN 107W AND 
114W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE ACROSS THE FAR W PORTION OF THE DISCUSSION 
WITH AXIS FROM 32N130W TO AN UPPER LEVEL ANTICYCLONIC 
CIRCULATION JUST W OF THE AREA NEAR 16N133W. A 85-100 KT 
JETSTREAM EXTENDS FROM 30N140W TO 31N132W THEN SE TO 26N128W. 
ABUNDANT MID/UPPER LEVEL MOISTURE IS WITHIN 200 NM S OF THE JET.

A BROAD UPPER LEVEL TROUGH E OF THE RIDGE IS N OF 15N BETWEEN 
110W AND 128W. A COUPLE OF SHORTWAVE TROUGHS ARE EMBEDDED WITHIN 
THE MAIN TROUGH. ONE IS FROM 32N131W TO 28N125W. BROKEN 
MID/UPPER LEVEL CLOUDS ARE WITHIN 120 NM E OF THE TROUGH AXIS. 
THE SECOND SHORTWAVE IS OFF THE COAST OF BAJA CALIFORNIA FROM 
28N116W TO 22N113W. SCATTERED SHOWERS ARE WITHIN 120 NM E OF THE 
TROUGH AXIS FROM 22N-26N. A BROAD UPPER LEVEL ANTICYCLONIC 
CIRCULATION IS JUST OFF THE SW COAST OF MEXICO NEAR 14N97W WITH 
RIDGE EXTENDING SW TO 10N107W. 

A TIGHT PRES GRADIENT ACROSS SOUTHERN MEXICO IS PRODUCING STRONG 
GALE FORCE WINDS THROUGH THE GULF OF TEHUANTEPEC. A COUPLE OF 
SURFACE TROUGHS ARE ANALYZED ALONG THE ITCZ ONE FROM 15N111W
8N112W. SCATTERED MODERATE TO STRONG CONVECTION FROM 8N-13N
BETWEEN 107W-114W. A SECOND TROUGH IS FROM 14N125W TO 7N127W
AN ISOLATED STRONG TSTM IS WITHIN A 30 NM RADIUS 10N127.5W.

$$
DGS