ZCZC WEGM42 PHEB 231113 TIBGUM TSUNAMI INFORMATION STATEMENT NUMBER 3 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 913 PM CHST TUE JAN 23 2018 ...NO TSUNAMI THREAT TO GUAM/CNMI FROM A DISTANT EARTHQUAKE... THIS MESSAGE CONTAINS REVISED EARTHQUAKE PARAMETERS. AUDIENCE -------- EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC EVALUATION ---------- * NOTE REVISED EARTHQUAKE MAGNITUDE * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.9 OCCURRED IN THE GULF OF ALASKA AT 732 PM CHST ON TUESDAY JANUARY 23 2018. RECOMMENDED ACTIONS ------------------- * NO FURTHER ACTION IS REQUIRED. TSUNAMI OBSERVATIONS -------------------- * THE FOLLOWING ARE TSUNAMI WAVE OBSERVATIONS FROM COASTAL AND/OR DEEP-OCEAN SEA LEVEL GAUGES AT THE INDICATED LOCATIONS. THE MAXIMUM TSUNAMI HEIGHT IS MEASURED WITH RESPECT TO THE TIDE LEVEL. GAUGE TIME OF MAXIMUM WAVE COORDINATES MEASURE TSUNAMI PERIOD GAUGE LOCATION LAT LON (CHST) HEIGHT (MIN) ------------------------------------------------------------- DART 46403 52.6N 156.9W 1124 PM 0.1FT/ 0.0M 08 DART 46410 57.6N 143.8W 1108 PM 0.1FT/ 0.0M 06 DART 46409 55.3N 148.5W 1044 PM 0.4FT/ 0.1M 04 POTENTIAL IMPACTS ----------------- * NO TSUNAMI IMPACTS ARE EXPECTED. PRELIMINARY EARTHQUAKE PARAMETERS - UPDATED ------------------------------------------- * MAGNITUDE 7.9 * ORIGIN TIME 732 PM CHST JAN 23 2018 * COORDINATES 56.0 NORTH 149.2 WEST * DEPTH 12 MILES * LOCATION GULF OF ALASKA NEXT UPDATE AND ADDITIONAL INFORMATION -------------------------------------- * THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES. * FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE INTERNET AT PTWC.WEATHER.GOV AND AT WWW.TSUNAMI.GOV. * AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S. GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT EARTHQUAKE.USGS.GOV/EARTHQUAKES -ALL LOWERCASE LETTERS-. $$ NNNN