Cancel HYDROPAC 583/09 and this msg, pacific tsunami warning center canceled the tsunami warning

Timeline · 2 messages, oldest first

1. 1
   HYDROPAC 583/092009-03-19 19:50Z → cancelled 2009-03-19 20:23Z (archive)
   An earthquake occurred at 191818Z mar, preliminary magnitude of 7.7 vicinity 23.0S 174.8W

   AN EARTHQUAKE OCCURRED AT 191818Z MAR, PRELIMINARY
   MAGNITUDE OF 7.7 VICINITY 23.0S 174.8W. SEA LEVEL
   READINGS CONFIRM THAT A TSUNAMI WAS GENERATED.
   THIS TSUNAMI MAY HAVE BEEN DESTRUCTIVE ALONG
   COASTLINES OF THE REGION NEAR THE EARTHQUAKE EPICENTER.
   AUTHORITIES IN THE REGION SHOULD TAKE APPROPRIATE
   ACTION IN RESPONSE TO THIS POSSIBILITY. THIS
   CENTER WILL CONTINUE TO MONITOR SEA LEVEL GAUGES
   NEAREST THE REGION AND REPORT IF ANY ADDITIONAL
   TSUNAMI WAVE ACTIVITY. THE WARNING WILL NOT
   EXPAND TO OTHER AREAS OF THE PACIFIC UNLESS
   ADDITIONAL DATA ARE RECEIVED TO WARRANT SUCH
   AN EXPANSION FOR AFFECTED AREAS - WHEN NO MAJOR
   WAVES ARE OBSERVED FOR TWO HOURS AFTER THE
   ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE
   NOT OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL
   AUTHORITIES CAN ASSUME THE THREAT IS PASSED.
   DANGER TO BOATS AND COASTAL STRUCTURES CAN
   CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS.
   AS LOCAL CONDITIONS CAN CAUSE A WIDE VARIATION
   IN TSUNAMI WAVE ACTION THE ALL CLEAR
   DETERMINATION MUST BE MADE BY LOCAL
   AUTHORITIES. ESTIMATED INITIAL TSUNAMI WAVE
   ARRIVAL TIMES AT FORECAST POINTS WITHIN THE
   WARNING AND WATCH AREAS ARE GIVEN
   BELOW. ACTUAL ARRIVAL TIMES MAY DIFFER AND
   THE INITIAL WAVE MAY NOT BE THE LARGEST.
   A TSUNAMI IS A SERIES OF WAVES AND THE TIME
   BETWEEN SUCCESSIVE WAVES CAN BE FIVE MINUTES
   TO ONE HOUR. CAUTION ADVISED.
   

2. 2
   HYDROPAC 585/092009-03-19 20:23Z → cancelled 2009-03-19 20:23Z (archive)
   Cancel HYDROPAC 583/09 and this msg, pacific tsunami warning center canceled the tsunami warning

   CANCEL HYDROPAC 583/09 AND THIS MSG, PACIFIC TSUNAMI
   WARNING CENTER CANCELED THE TSUNAMI WARNING.