PERRYVILLE, AK. (THECOUNT) — A massive magnitude 8.2 earthquake has struck Alaska Wednesday night prompting tsunami warnings as far away as Hawaii and beyond.
According to USGS, the quake was centered offshore near Perryville Wednesday around 11:15 p.m. PST.
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DEVELOPING::
TSUNAMI MESSAGE NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
825 PM HST WED JUL 28 2021
TO – EMERGENCY MANAGEMENT IN THE STATE OF HAWAII
SUBJECT – TSUNAMI WATCH
A TSUNAMI WATCH IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT
0825 PM HST.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME – 0816 PM HST 28 JUL 2021
COORDINATES – 55.5 NORTH 157.9 WEST
LOCATION – ALASKA PENINSULA
MAGNITUDE – 8.1 MOMENT
EVALUATION
BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY
THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN
FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE
IF THERE IS A TSUNAMI THREAT TO HAWAII.
IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF
THE FIRST TSUNAMI WAVE IS
1253 AM HST THU 29 JUL 2021
FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.
______________________
…A TSUNAMI ADVISORY IS NOW IN EFFECT…
Tsunami Warning in Effect for;
* SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from
Hinchinbrook Entrance, Alaska (90 miles E of Seward) to
Unimak Pass, Alaska (80 miles NE of Unalaska)
* ALEUTIAN ISLANDS, Unimak Pass, Alaska (80 miles NE of
Unalaska) to Samalga Pass, Alaska (30 miles SW of Nikolski)
Tsunami Advisory in Effect for;
* SOUTHEAST ALASKA, The inner and outer coast from Cape
Decision, Alaska (85 miles SE of Sitka) to Cape
Fairweather, Alaska (80 miles SE of Yakutat)
* SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from
Cape Fairweather, Alaska (80 miles SE of Yakutat) to
Hinchinbrook Entrance, Alaska (90 miles E of Seward)
* ALEUTIAN ISLANDS, Samalga Pass, Alaska (30 miles SW of
Nikolski) to Amchitka Pass, Alaska (125 miles W of Adak)
including the Pribilof Islands
_______________________
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.1 OCCURRED IN
THE ALASKA PENINSULA AT 0616 UTC ON THURSDAY JULY 29 2021.
* BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS… WIDESPREAD
HAZARDOUS TSUNAMI WAVES ARE POSSIBLE.
TSUNAMI THREAT FORECAST
———————–
* HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE
WITHIN THE NEXT THREE HOURS ALONG SOME COASTS OF
NO AREAS COVERED BY THIS MESSAGE APPEAR TO BE IMMEDIATELY
THREATENED. HOWEVER… THE SITUATION IS STILL UNDER
INVESTIGATION. THIS THREAT EVALUATION WILL BE UPDATED AS
SOON AS FURTHER INFORMATION BECOMES AVAILABLE.
RECOMMENDED ACTIONS
——————-
* GOVERNMENT AGENCIES RESPONSIBLE FOR THREATENED COASTAL AREAS
SHOULD TAKE ACTION TO INFORM AND INSTRUCT ANY COASTAL
POPULATIONS AT RISK IN ACCORDANCE WITH THEIR OWN
EVALUATION… PROCEDURES AND THE LEVEL OF THREAT.
* PERSONS LOCATED IN THREATENED COASTAL AREAS SHOULD STAY ALERT
FOR INFORMATION AND FOLLOW INSTRUCTIONS FROM NATIONAL AND
LOCAL AUTHORITIES.
POTENTIAL IMPACTS
—————–
* A TSUNAMI IS A SERIES OF WAVES. THE TIME BETWEEN WAVE CRESTS
CAN VARY FROM 5 MINUTES TO AN HOUR. THE HAZARD MAY PERSIST
FOR MANY HOURS OR LONGER AFTER THE INITIAL WAVE.
* IMPACTS CAN VARY SIGNIFICANTLY FROM ONE SECTION OF COAST TO
THE NEXT DUE TO LOCAL BATHYMETRY AND THE SHAPE AND ELEVATION
OF THE SHORELINE.
* IMPACTS CAN ALSO VARY DEPENDING UPON THE STATE OF THE TIDE AT
THE TIME OF THE MAXIMUM TSUNAMI WAVES.
* PERSONS CAUGHT IN THE WATER OF A TSUNAMI MAY DROWN… BE
CRUSHED BY DEBRIS IN THE WATER… OR BE SWEPT OUT TO SEA.
NEXT UPDATE AND ADDITIONAL INFORMATION
————————————–
* THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR… OR SOONER IF
THE SITUATION WARRANTS.
* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.
* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND 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
WWW.TSUNAMI.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 WWW.TSUNAMI.GOV.