000
AXPZ20 KNHC 221515
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON NOV 22 2010

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 IS ALONG 7N82W 8N110W 10N130W 8N140W. SCATTERED MODERATE TO 
STRONG CONVECTION WITHIN 60 NM EITHER SIDE OF LINE FROM 11N107W 
TO 14N119W.

...DISCUSSION...
A BROAD FLAT UPPER LEVEL RIDGE OVER THE NW PORTION OF THE 
DISCUSSION AREA WITH ANTICYCLONIC FLOW N OF 18N BETWEEN 
118W-136W. DOWNSTREAM BROAD UPPER LEVEL LEVEL TROUGH OVER THE 
WESTERN U.S. EXTENDING SWD ACROSS THE BAJA PENINSULA. A 75-95 KT 
JET STREAM EXTENDS FROM 30N130W TO TO NORTHERN BAJA CALIFORNIA
INTO NORTHERN MEXICO WHERE WINDS INCREASE TO 115 KT. UPPER LEVEL 
RIDGE EXTENDS FROM THE SW CARIBBEAN ACROSS CENTRAL AMERICA THEN 
N OVER SOUTHERN MEXICO TO 16N115W. IN THE DEEP TROPICS AN UPPER 
LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 5N118W. MODERATE TO 
STRONG IS S OF THE ITCZ W OF 85W.

LARGE NLY SWELLS TO 13 FT ARE NOTED N OF 25N W OF 120W. STRONG 
HIGH PRES BUILDING ACROSS THE NW PORTION OF THE AREA WILL 
INCREASE TRADES FROM 13N TO 20N W OF 120W. SURFACE TROUGH 
EXTENDS FROM 13N129W TO 1011 MB LOW PRES NEAR 10N129W TO 7N127W. 
SCATTERED SHOWERS AND TSTMS ARE ALONG THE TROUGH N OF 9N.

ELY WINDS OVER THE WESTERN CARIBBEAN ARE FUNNELING THROUGH THE 
CENTRAL AMERICA PASSES BRINGING 20 KT WINDS INTO THE GULF OF 
PAPAGAYO. THESE WINDS WILL PULSE WITH THE STRONGEST WINDS DURING 
THE OVERNIGHT AND EARLY MORNING HOURS WITH THE AID OF NOCTURNAL 
DRAINAGE FLOW OFF THE MOUNTAINOUS TERRAIN. 

$$
DGS