000
AXPZ20 KNHC 232100
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED MAR 23 2011

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ANALYZED FROM 08N83W 
TO 04N102W TO 04N140W. SCATTERED MODERATE WITHIN 120 NM N AND 75 
NM S OF AXIS W OF 128W.

...DISCUSSION...

A DISSIPATING COLD FRONT EXTENDS FROM 30N122W TO 23N140W. FRESH 
20 KT WINDS PREVAIL W OF THE FRONT. THIS FRONT IS FORECAST TO 
DISSIPATE OVER THE NEXT 24 HOURS IN THE VICINITY OF THE NORTHERN 
GULF OF CALIFORNIA REGION. 

FRESH TRADE WINDS PREVAIL FROM 07N TO 17N BETWEEN 120W AND 124W 
AND FROM 05N TO 21N W OF 124W. HIGH PRESSURE 1034 MB LOCATED 
NEAR 35N156W HAS RIDGE EXTENDING INTO THE AREA W OF THE COLD 
FRONT MENTIONED ABOVE. AS THE COLD FRONT SHIFTS E...THE RIDGE 
WILL EXTEND FURTHER WESTWARD BEHIND THE FRONT. THIS WILL 
INCREASE THE AREAL COVERAGE OF TRADES OVER THE NEXT 24 HOURS.

A STRENGTHENING PRESSURE GRADIENT BETWEEN THE RIDGING OVER N 
WATERS AND TROUGHING OVER CENTRAL MEXICO IS PRODUCING FRESH NW 
WINDS FROM 24N TO 27N WITHIN 90 NM W OF BAJA CALIFORNIA. THIS 
AREA OF FRESH WINDS WILL CONTINUE THROUGH THE FORECAST PERIOD.

GAP WINDS...
GULF OF CALIFORNIA...A STRONG PRES GRADIENT BETWEEN TROUGHING 
OVER CENTRAL MEXICO AND RIDGING OVER N WATERS WILL ALLOW 20 KT 
WINDS TO CONTINUE OVER THE SOUTHERN PORTION OF THE GULF OF 
CALIFORNIA OVER THE NEXT 24 HOURS. THESE WINDS WILL THEN 
DIMINISH BELOW 20 KT THOUGH 48 HOURS. 

FRESH TO STRONG TRADES IN THE SW CARIBBEAN CONTINUE TO FUNNEL 
INTO THE GULFS OF PAPAGAYO AND PANAMA. THESE WINDS WILL DIMINISH 
BELOW 20 KT OVER THE NEXT 24 TO 30 HOURS. 

$$
AL