FOR HAWAII

https://hawaii247.com/wp-content/uploads/2016/12/20161208-0850-hccd-tsunami-watch-cancelled.mp3

Hawaii County Civil Defense Tsunami Watch cancellation message

TSUNAMI MESSAGE NUMBER 2 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 836 AM HST THU DEC 08 2016 TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII SUBJECT - TSUNAMI WATCH CANCELLATION THE TSUNAMI WATCH IS CANCELLED FOR THE STATE OF HAWAII EFFECTIVE AT 0836 AM HST. NOTE EARTHQUAKE MAGNITUDE DOWN GRADED TO 7.8 FROM 8.0. AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS ORIGIN TIME - 0739 AM HST 08 DEC 2016 COORDINATES - 10.7 SOUTH 161.4 EAST LOCATION - SOLOMON ISLANDS MAGNITUDE - 7.8 MOMENT EVALUATION BASED ON ALL AVAILABLE DATA THERE IS NO TSUNAMI THREAT TO THE STATE OF HAWAII. THEREFORE... THE TSUNAMI WATCH FOR HAWAII IS NOW CANCELLED. THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL DATA ARE RECEIVED.

FOR SOLOMON ISLANDS



Animation of the forecasted tsunami waves from the 7.8 magnitude earthquake in the Solomon Islands on Thursday, December 9, 2016 (Hawaii Time).

TSUNAMI INFORMATION STATEMENT NUMBER 5 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 2158 UTC THU DEC 8 2016 ...PTWC TSUNAMI SUPPLEMENT STATEMENT... THE TSUNAMI FORECAST IS UNCHANGED IN THIS MESSAGE. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 7.8 * ORIGIN TIME 1739 UTC DEC 8 2016 * COORDINATES 10.7 SOUTH 161.4 EAST * DEPTH 40 KM / 25 MILES * LOCATION SOLOMON ISLANDS EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.8 OCCURRED IN THE SOLOMON ISLANDS AT 1739 UTC ON THURSDAY DECEMBER 8 2016. * ADDITIONAL TSUNAMI OBSERVATIONS HAVE BEEN MADE. * NOTE THAT A MAXIMUM WAVE AMPLITUDE OF 0.43 M WAS OBSERVED AT TIDE STATION HIENGHENE IN NEW CALEDONIA AND THE AMPLITUDE IS CURRENTLY DIMINISHING AT THAT LOCATION. RECOMMENDED ACTIONS ------------------- * FOR COASTAL AREAS IMPACTED BY TSUNAMI WAVES... CAREFULLY MONITOR FOR ANY CONTINUING SEA LEVEL CHANGES. WHEN HAZARDOUS WAVES HAVE NOT BEEN OBSERVED FOR AT LEAST TWO HOURS THEN IT CAN BE ASSUMED THE HAZARD HAS PASSED. HOWEVER... CONTINUE TO EXERCISE CAUTION AROUND THE SEA AS SMALLER TSUNAMI FLUCTUATIONS MAY CONTINUE FOR MANY MORE HOURS. * FOR OTHER COASTAL AREAS... IF HAZARDOUS WAVES HAVE NOT BEEN OBSERVED FOR AT LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME THEN IT CAN BE ASSUMED THE HAZARD HAS PASSED. HOWEVER... SMALL SEA LEVEL FLUCTUATIONS MAY OCCUR AND NORMAL CAUTION AROUND THE SEA SHOULD BE EXERCISED. 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 NORMAL TIDE LEVEL. GAUGE TIME OF MAXIMUM WAVE COORDINATES MEASURE TSUNAMI PERIOD GAUGE LOCATION LAT LON (UTC) HEIGHT (MIN) ------------------------------------------------------------- THIO NEW CALEDONIA 21.6S 166.2E 2005 0.07M/ 0.2FT 16 VANUATU 17.8S 168.3E 2054 0.19M/ 0.6FT 22 LIFOU NEW CALEDONIA 20.9S 167.3E 1940 0.10M/ 0.3FT 06 LUGANVILLE VU 15.5S 167.2E 2033 0.18M/ 0.6FT 28 HIENGHENE NEW CALED 20.7S 164.9E 2054 0.43M/ 1.4FT 12 OUINNE NEW CALEDONI 22.0S 166.7E 2029 0.14M/ 0.4FT 20 HONIARA SB 9.4S 160.0E 1856 0.12M/ 0.4FT 18 DART 55012 15.7S 158.5E 1903 0.03M/ 0.1FT 14 LATA WHARF SB 10.7S 165.8E 1907 0.08M/ 0.3FT 36 NEXT UPDATE AND ADDITIONAL INFORMATION -------------------------------------- * THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES. * AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S. GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT EARTHQUAKE.USGS.GOV/EARTHQUAKES -ALL LOWER CASE-. * FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT PTWC.WEATHER.GOV AND AT WWW.TSUNAMI.GOV. * COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT PTWC.WEATHER.GOV. * COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON... BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S. NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND AT NTWC.ARH.NOAA.GOV.

USGS: How large does an earthquake have to be to cause a tsunami?



Magnitudes below 6.5

Earthquakes of this magnitude are very unlikely to trigger a tsunami. Magnitudes between 6.5 and 7.5

Earthquakes of this size do not usually produce destructive tsunamis. However, small sea level changes may be observed in the vicinity of the epicenter. Tsunamis capable of producing damage or casualties are rare in this magnitude range but have occurred due to secondary effects such as landslides or submarine slumps. Magnitudes between 7.6 and 7.8

Earthquakes of this size may produce destructive tsunamis especially near the epicenter; at greater distances small sea level changes may be observed. Tsunamis capable of producing damage at great distances are rare in the magnitude range. Magnitude 7.9 and greater

Destructive local tsunamis are possible near the epicenter, and significant sea level changes and damage may occur in a broader region. Note that with a magnitude 9.0 earthquake, the probability of an aftershock with a magnitude exceeding 7.5 is not negligible. To date, the largest aftershock recorded has been magnitude 7.1 that did not produce a damaging tsunami.

Share this: Facebook

Twitter

Pinterest

Reddit

Tumblr

LinkedIn

Print

More

Pocket

