000
AXPZ20 KNHC 230302
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN JAN 23 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...
AXIS IS ALONG 07N80W TO 04N98W TO 08N130W TO 08N140W. SCATTERED 
MODERATE CONVECTION WAS NOTED WITHIN 30 NM EITHER SIDE OF AXIS W 
OF 133W. 

...DISCUSSION...

SURFACE HIGH PRES...1027 MB...IS CENTERED NEAR 41N133W WITH 
SURFACE RIDGE EXTENDING SE TO 20N110W AND SW TO W OF THE AREA 
NEAR 26N158W. LATEST ASCAT PASS INDICATED A SMALL AREA OF FRESH 
20 KT WINDS FROM 08N TO 14N W OF 133W. THIS HAS RESULTED IN 
ENOUGH LOW LEVEL CONVERGENCE TO MAINTAIN MODERATE CONVECTION IN 
THE ITCZ AS MENTIONED ABOVE. 

LONG PERIOD...19-20 SEC...SWELLS ARE AFFECTING THE AREA NW OF 
LINE 26N113W TO 07N116W TO 00N127W WITH SEAS TO 14 FT. THIS 
SWELL WILL CONTINUE SPREADING SE OVER THE NEXT 48 HOURS...WITH 
8 TO 10 FT SEAS OVER MUCH OF THE AREA W OF 100W BY MON NIGHT. 

HIGH PRES CENTER OVER EASTERN MEXICO HAS DISSIPATED. WITH HIGH 
PRESSURE 1018 MB CENTERED NEAR 29N89W BECOMING THE DOMINANT 
FEATURE OVER THE GULF...WINDS HAVE VEERED IN RESPONSE. WINDS 
FLOWING INTO THE GULF OF TEHUANTEPEC HAVE STARTED TO 
DIMINISH...AND WINDS IN THE GULF OF TEHUANTEPEC ARE EXPECTED TO 
DIMINISH BELOW 20 KT SUN AFTERNOON.

SURFACE HIGH PRESSURE WILL BUILD ACROSS THE GREAT BASIN REGION 
OVERNIGHT. THIS WILL INCREASE WINDS OVER THE GULF OF CALIFORNIA 
SUNDAY MORNING...PERSISTING THROUGH MON EVENING.  

$$
AL