000
AXPZ20 KNHC 171508
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON NOV 17 2008

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
AXIS ALONG 9N84W 7N105W 8N120W 6N140W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 120 NM N OF AXIS FROM 113W-117W.

...DISCUSSION...
UPPER LEVEL TROUGH IS APPROACHING THE FAR W PORTION OF THE 
DISCUSSION AREA...OTHERWISE AN UPPER LEVEL RIDGE WITH AXIS 
EXTENDING FROM AND ANTICYCLONIC CIRCULATION NEAR 32N125W TO 
24N131W THEN FLATTENS TO 15N140W. MODERATE TO STRONG SUBSIDENCE 
WITH DRY STABLE AIR COVERS THE AREA N OF THE ITCZ BETWEEN 120W 
AND 135W. UPPER LEVEL CYCLONIC CIRCULATION CENTERED NEAR 
20N118W. SLY WINDS E OF THE CYCLONIC CIRCULATION IS ADVECTING 
HIGH LEVEL MOISTURE FROM THE ITCZ TOWARD THE W COAST OF MEXICO. 
MID/UPPER LEVEL ANTICYCLONIC CIRCULATION OVER THE NW CARIBBEAN 
WITH RIDGE EXTENDING ACROSS HONDURAS AND GUATEMALA THE ACROSS 
THE PACIFIC TO 20N107W. 

HIGH PRES ACROSS THE GULF OF MEXICO WITH A TIGHT PRES GRADIENT 
OVER SOUTHERN MEXICO IS PRODUCING STRONG GALE FORCE WINDS 
THROUGH THE GULF OF TEHUANTEPEC. 

A 1022 MB SURFACE HIGH PRES IS ANALYZED NEAR 31N128W WITH RIDGE 
FROM THE HIGH CENTER TO 19N108W. BROKEN/OVERCAST STRATOCUMULUS 
CLOUDS BLANKET THE AREA N OF 20N W OF 120W.

$$
DGS