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Tsunami Warnings and Advisories for California

 


THE TSUNAMI IS A RESULT OF A LARGE EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.9 ON THE RICHTER SCALE THAT OCCURRED AT 945 PM PST THURSDAY. THE EARTHQUAKE LOCATION WAS NEAR JAPAN.

A tsunami warning is in effect for the immediate coast and harbors north of point conception


- PERSONS IN TSUNAMI WARNING COASTAL AREAS SHOULD MOVE INLAND TO HIGHER GROUND.

...A TSUNAMI ADVISORY

IS IN EFFECT FOR THE IMMEDIATE COAST AND HARBORS SOUTH OF POINT CONCEPTION...


- PERSONS IN TSUNAMI ADVISORY COASTAL AREAS SHOULD MOVE OUT OF THE WATER... OFF THE BEACH AND OUT OF HARBORS AND MARINAS.
                                   

... A TSUNAMI ADVISORY REMAINS IN EFFECT FOR THE IMMEDIATE COAST AND HARBORS SOUTH OF POINT CONCEPTION... BASED ON THE LATEST TELECONFERENCE...NOT MUCH CHANGE TO CURRENT TSUNAMI FORECAST. COASTAL AREAS NORTH OF POINT CONCEPTION WILL LIKELY EXPERIENCE A TSUNAMI INUNDATION BETWEEN 3 TO 7 FEET. HIGHEST WAVE INUNDATION TO AROUND 7 FEET CAN BE EXPECTED AROUND PORT SAN LUIS.  

 

FOR AREAS SOUTH OF POINT CONCEPTION... EXPECTED TSUNAMI WAVE HEIGHTS AROUND 2 FEET CAN BE EXPECTED FROM SANTA BARBARA TO LONG BEACH. THE INITIAL WAVE ARRIVAL WILL BEGIN WITHIN 15 MINUTES OF THE ESTIMATED ARRIVAL TIMES LISTED BELOW: PORT SAN LUIS HARBOR...AT 803 AM PST. POINT CONCEPTION.......AT 757 AM PST SANTA BARBARA HARBOR...AT 817 AM PST. RINCON.................AT 828 AM PST SANTA MONICA HARBOR....AT 831 AM PST. SAN PEDRO HARBOR.......AT 832 AM PST. NEW INFORMATION...  

 

THE LATEST EXPECTED TSUNAMI WAVE HEIGHT AMPLITUDES... MORRO BAY............... 3.3 FT PORT SAN LUIS HARBOR.... 7.1 FT PISMO BEACH............. 2.0 FT SANTA BARBARA........... 1.3 FT VENTURA................. 2.5 FT MALIBU.................. 1.0 FT  

REDONDO BEACH........... 1.8 FT  

SAN PEDRO HARBOR........ 1.6 FT




RECOMMENDED ACTIONS...A TSUNAMI HAS BEEN GENERATED IN THE FAR WESTERN PACIFIC OCEAN. A TSUNAMI GREATER THAN 3 FEET CAN BE EXPECTED FOR AREAS NORTH OF POINT CONCEPTION INCLUDING PORT SAN LUIS AND MORRO BAY. PERSONS IN LOW-LYING COASTAL AREAS SHOULD MOVE INLAND TO HIGHER GROUND AND BE ALERT TO INSTRUCTIONS FROM THEIR LOCAL EMERGENCY OFFICIALS. TSUNAMIS OFTEN ARRIVE AS A SERIES OF WAVES WHICH COULD BE DANGEROUS FOR SEVERAL HOURS AFTER THE INITIAL WAVE ARRIVAL.

A TSUNAMI ADVISORY IS IN EFFECT FOR COASTAL AREAS SOUTH OF POINT CONCEPTION. A TSUNAMI IS EXPECTED TO BE LESS THAN 3 FEET. A TSUNAMI ADVISORY MEANS THAT A TSUNAMI CAPABLE OF PRODUCING STRONG CURRENTS OR WAVES DANGEROUS TO PERSONS IN OR NEAR THE WATER AS WELL AS BOATS MOORED IN HARBORS IS IMMINENT OR EXPECTED.


A TSUNAMI WARNING IS ISSUED WHEN A POTENTIAL TSUNAMI WITH SIGNIFICANT WIDESPREAD INUNDATION IS IMMINENT OR EXPECTED. WARNINGS ALERT THE PUBLIC THAT WIDESPREAD...DANGEROUS COASTAL FLOODING ACCOMPANIED BY POWERFUL CURRENTS IS POSSIBLE AND MAY CONTINUE FOR SEVERAL HOURS AFTER OF THE INITIAL WAVE. WARNINGS ALSO ALERT EMERGENCY MANAGEMENT OFFICIALS TO TAKE ACTION FOR THE ENTIRE TSUNAMI HAZARD ZONE. APPROPRIATE ACTIONS TO BE TAKEN BY LOCAL OFFICIALS MAY INCLUDE THE EVACUATION OF LOW-LYING COASTAL AREAS AND REPOSITIONING OF SHIPS TO DEEP WATERS WHEN THERE IS TIME TO SAFELY DO SO. WARNINGS MAY BE UPDATED... ADJUSTED GEOGRAPHICALLY... DOWNGRADED... OR CANCELED. TO PROVIDE THE EARLIEST POSSIBLE ALERT...INITIAL WARNINGS ARE NORMALLY BASED ONLY ON SEISMIC INFORMATION.

Area: CATALINA ISLAND-LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOSANGELES-SAN LUIS OBISPO COUNTY CENTRAL COAST-SANTA BARBARA COUNTYCENTRAL COAST-SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST

TSUNAMI BROCHURE

http://www.stormready.noaa.gov/tsunamiready/resources/Tsmi_Brochure10.pdf

Hermosa Beach Tsunami Hazard:Maximum Runup

http://www.saferhermosabeach.com/archive/disaster_preparedness_links/TsunamiRunup.pdf