000
AXPZ20 KNHC 230320
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN MAY 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 
0215 UTC.

..TROPICAL WAVES...

TROPICAL WAVE FROM 03N119W TO 11.5N114W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION FROM 05N TO 11N BETWEEN 112W AND 
118W. 

...ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG 08N83W TO 
07.5N96W TO 09N102.5W TO 07N120W TO 08N128W TO 06.5N140W. 
SCATTERED MODERATE TO STRONG CONVECTION WITHIN 120 NM N OF AXIS 
AND SCATTERED MODERATE CONVECTION WITHIN 60 NM S OF AXIS BETWEEN 
98W AND 106W. SCATTERED MODERATE TO STRONG CONVECTION WITHIN 150 
NM N OF AXIS AND 90 NM S OF AXIS W OF 125W.

...DISCUSSION...
THE NE PACIFIC IS DOMINATED BY A STRONG 1035 MB HIGH JUST NW OF 
OUR REGION AT 35N149W. THERE IS A TIGHT PRES GRADIENT IN PLACE 
BETWEEN THIS HIGH AND TROUGHING FROM THE SW U.S. THROUGH CENTRAL 
MEXICO...PRODUCING FRESH TO STRONG NW TO N WINDS FROM OFFSHORE 
OF CENTRAL CALIFORNIA...WHERE AN AREA OF GALE FORCE WINDS IS 
FOUND...TO ALONG THE W COAST OF BAJA CALIFORNIA. THIS STRONG 
PRES GRADIENT OVER NE WATERS WILL BE MAINTAINED THE NEXT FEW 
DAYS. LOOK FOR FRESH TO STRONG NE TRADE WINDS BETWEEN THE HIGH 
AND THE ITCZ TO REMAIN IN PLACE GENERALLY W OF 127W THROUGH MON. 
THE PREVIOUSLY TRACKED TROPICAL WAVES FROM 04N83W TO 07N81W THEN 
TO 11N81W IN THE CARIBBEAN SEA...AND FROM 03.5N94W TO TO 13N91W 
HAVE BEEN NEARLY STATIONARY OVER THE PAST 12 HOURS OR SO...AND 
APPEAR TO HAVE BEEN ABSORBED INTO THE LARGER SCALE CYCLONIC 
VORTICITY ENVELOPE OVER CENTRAL AMERICA. THUS...HAVE OPTED TO 
TRANSITION THE FEATURES TO A TROUGH.  

EARLY MONDAY MORNING...20 TO 25 KT NW SURFACE WINDS SHOULD 
COMMENCE OVER THE NORTHERN GULF OF CALIFORNIA. THESE WINDS 
SHOULD CONTINUE UNTIL TUESDAY.

THE REMAINDER OF THE AREA HAS LESS THAN 20 KT WINDS BUT IS 
OVERSPREAD BY 8 TO 11 FT S TO SW SWELL FROM THE SOUTHERN 
HEMISPHERE. THIS MODERATE SWELL SHOULD CONTINUE FOR AT LEAST THE 
NEXT FEW DAYS.

$$
AL