000
AXPZ20 KNHC 240311
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC MON JAN 24 2011

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...

ITCZ AXIS IS ALONG 06N77W TO 07N83W TO 02N107W TO 09N140W WITH 
NO SIGNIFICANT CONVECTION NOTED.

...DISCUSSION...

SURFACE HIGH PRESSURE...1026 MB...IS CENTERED NEAR 36N137W WITH 
SURFACE RIDGE EXTENDING SE TO 15N111W. THERE IS A SMALL AREA OF 
20 KT TRADES FROM FROM 14N TO 19N W OF 135W. THIS HIGH PRESSURE 
WILL REMAIN NEARLY STATIONARY OVER THE NEXT 48 
HOURS...MAINTAINING THIS SMALL AREA OF FRESH 20 KT TRADES. 
ANOTHER AREA OF HIGH PRESSURE IS CENTERED OVER THE GREAT BASIN 
REGION. THE PRESSURE GRADIENT BETWEEN THIS HIGH PRESSURE AND A 
TROUGH OVER THE GULF OF CALIFORNIA IS SUPPORTING STRONG TO NEAR 
GALE NORTHERLY WINDS. THE HIGH PRESSURE OVER THE GREAT BASIN 
REGION WILL PREVAIL THROUGH MON AFTERNOON...THEN WEAKEN THROUGH 
TUE. AS THE HIGH PRESSURE WEAKENS...WINDS OVER THE GULF OF 
CALIFORNIA WILL DIMINISH BELOW 20 KT LATE MON NIGHT.  

LONG PERIOD NW SWELL CONTINUES TO PROPAGATE SE ACROSS THE AREA. 
CURRENTLY...8 TO 12 FT SEAS PREVAIL W OF 110 W. THIS SWELL WILL 
CONTINUE TO PROPAGATE SE...WITH 8 TO 10 FT SEAS PREVAILING OVER 
MUCH OF THE AREA W OF 92W BY TUE NIGHT. 

GAP WINDS...
FRESH WINDS TO 20 KT CONTINUE OVER THE GULF OF PAPAGAYO. THESE 
WINDS WILL PREVAIL THROUGH MON NIGHT...WITH MAXIMUM WINDS 
OCCURRING EARLY MONDAY MORNING WITH THE HELP OF NOCTURNAL 
DRAINAGE FLOW. 

FRESH N WINDS OF 20 KT OVER THE GULF OF PANAMA. THESE WINDS ARE 
EXPECTED TO PREVAIL THROUGH MON NIGHT BEFORE DIMINISHING BELOW 
20 KT. 

$$

AL