Tsunami warning issued for coastal Alaska.

[RandySF]

Link to tweet

?s=20

STRONG 7.8 #earthquake along the subduction fault off Alaska's coast was measured only 10 km (6.2 mi) deep. Open water buoys are showing significant wave heights. Will monitor for possible #Tsunami.

[Wounded Bear]

1. K & R...for visibility...nt

[Hekate]

2. KnR

[SeattleVet]

3. NOAA's Tsunami site keep pretty well up-to-date

https://www.tsunami.gov

Good links to warnings and advisories.

[brettdale]

4. Hope all will be okay

Its been about an hour since the warning? What time is it predicted to hit?

I'm guessing everyone has evacuated?

[Grasswire2]

5. Seattle? nt

[Cha]

6. Best of Great Luck to Alaska!

[KY_EnviroGuy]

7. Latest warning from tsunami.gov

From: https://www.tsunami.gov/events/PAAQ/2020/07/22/qdux98/4/WEAK51/WEAK51.txt

BULLETIN
Public Tsunami Message Number 4
NWS National Tsunami Warning Center Palmer AK
1151 PM AKDT Tue Jul 21 2020

UPDATES
-------
* Revised alert areas

...THE TSUNAMI WARNING REMAINS IN EFFECT...

Tsunami Warning in Effect for;

* SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from
Kennedy Entrance, Alaska (40 miles SW of Homer) 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)

Alerts in the following areas have been canceled because
additional information and analysis have better defined the
threat.

* The Tsunami Advisory is canceled for the coastal areas of
Aleutian Islands from Samalga Pass, Alaska (30 miles SW of
Nikolski) to Amchitka Pass, Alaska (125 miles W of Adak)


For other US and Canadian Pacific coasts in North America,
there is no tsunami threat.


FORECASTS OF TSUNAMI ACTIVITY
-----------------------------
* Tsunami activity is forecasted to start at the following
locations at the specified times.

FORECAST
START
SITE OF TSUNAMI
---- ----------

* Alaska
Sand Point 2315 AKDT Jul 21
Unalaska 2350 AKDT Jul 21
Kodiak 0005 AKDT Jul 22
Cold Bay 0015 AKDT Jul 22


OBSERVATIONS OF TSUNAMI ACTIVITY
--------------------------------
* No tsunami observations are available to report.

PRELIMINARY EARTHQUAKE PARAMETERS
---------------------------------

* Magnitude 7.8
* Origin Time 2213 AKDT Jul 21 2020
2313 PDT Jul 21 2020
0613 UTC Jul 22 2020
* Coordinates 55.2 North 158.6 West
* Depth 8 miles
* Location 75 miles S of Chignik, Alaska
520 miles SW of Anchorage, Alaska

[KY_EnviroGuy]

8. Anchorage Daily News alert bulletin....

Strong earthquake prompts tsunami warning from Aleutian Islands to western Kenai

Author: Anchorage Daily News clock Updated: 8 minutes ago calendar Published 1 hour ago

Link: https://www.adn.com/alaska-news/2020/07/21/strong-earthquake-prompts-tsunami-warning-from-alaska-peninsula-to-western-kenai/

Link to tweet

Article Excerpt:

An earthquake with a magnitude of 7.8 centered about 75 miles south of Chignik on Tuesday night prompted a tsunami warning for a large swath of coastal Alaska, from the Aleutian Islands to Kodiak Island and the western Kenai Peninsula.

According to a public message from the National Tsunami Warning Center in Palmer, the tsunami warning is in effect for the Pacific coasts from the Kennedy Entrance about 40 miles southwest of Homer to Unimak Pass, about 80 miles northeast of Unalaska, then continuing through the Aleutian Islands to Samalga Pass about 30 miles southwest of Nikolski.

KY

[KY_EnviroGuy]

9. THE TSUNAMI WARNING IS CANCELLED...

From: https://www.tsunami.gov/events/PAAQ/2020/07/22/qdux98/5/WEAK51/WEAK51.txt

BULLETIN
Public Tsunami Message Number 5
NWS National Tsunami Warning Center Palmer AK
1223 AM AKDT Wed Jul 22 2020

...THE TSUNAMI WARNING IS CANCELLED...

* The Tsunami Warning is canceled for the coastal areas of
South Alaska and the Alaska Peninsula and Aleutian Islands


OBSERVATIONS OF TSUNAMI ACTIVITY - UPDATED
------------------------------------------
* Observed max tsunami height is the highest recorded water level
above the tide level up to the time of this message.

TIME OBSERVED MAX
SITE OF MEASUREMENT TSUNAMI HEIGHT
---------------------------- ---------------- --------------
Sand Point Alaska 0004 PDT Jul 22 0.8ft

RECOMMENDED ACTIONS - UPDATED
-----------------------------
* Do not re-occupy hazard zones until local emergency officials
indicate it is safe to do so.

IMPACTS - UPDATED
-----------------
* A tsunami was generated by this event, but no longer
poses a threat.

* Some areas may continue to see small sea level changes.

* The determination to re-occupy hazard zones must be made
by local officials.

----------------

Great news!........

[In_The_Wind]

10. Thank you