000
AXPZ20 KNHC 230324
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE NOV 23 2010

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...
AXIS IS ALONG 09N84W TO 08N100W TO 09N113W TO 08N118W TO 10N130W 
TO 09N140W. SCATTERED MODERATE WITHIN 75 NM OF AXIS BETWEEN 90W 
AND 100W. 

...DISCUSSION...
STRONG 1037 MB HIGH PRESSURE IS CENTERED NEAR 41N145W WITH RIDGE 
EXTENDING SE ACROSS THE N PART OF THE AREA TO 17N106W. THE 
PRESSURE GRADIENT BETWEEN THIS RIDGE AND LOWER PRESSURE NEAR THE 
ITCZ IS MAINTAINING FRESH TRADES FROM 12N TO 23N W OF 116W. THE 
TIGHT PRESSURE GRADIENT BETWEEN THE RIDGE AND A TROUGH OF LOW 
PRESSURE OVER SIERRA MADRE IS PRODUCING FRESH WINDS OFF THE WEST 
COAST OF BAJA CALIFORNIA. THE HIGH PRESSURE SYSTEM WILL REMAIN 
STATIONARY AND CONTINUE TO MAINTAIN A TIGHT PRESSURE GRADIENT 
FOR FRESH WINDS TO CONTINUE THROUGH THE FORECAST PERIOD.  

LARGE NLY SWELLS TO 12 FT ARE NOTED N OF 23N W OF 115W. THESE 
SWELLS WILL CONTINUE TO PROPAGATE SOUTHWARD OVER THE FORECAST 
AREA W OF 115W. IN THE AREA OF STRONGEST TRADES...THE SWELLS 
WILL MIX WITH SHORTER PERIOD NE SWELL. 

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. 

$$
AL