From the Public Tsunami Message Number 6 – NWS National Tsunami Warning Center Palmer issued at 0340 AM AKST Tue Jan 23 2018 –

Tsunami Advisory in Effect for:

 * SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from Hinchinbrook Entrance, 
Alaska (90 miles E of Seward) to Chignik Bay, Alaska

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

Further updates to follow.

Public Tsunami Message Number 6

NWS National Tsunami Warning Center Palmer AK

340 AM AKST Tue Jan 23 2018

UPDATES

 

Tsunami Advisory in Effect for:

  • SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from Hinchinbrook Entrance, Alaska (90 miles E of Seward) to Chignik Bay, Alaska

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

FORECASTS OF TSUNAMI ACTIVITY
  • A tsunami has been generated. The first waves are forecasted to arrive at the following locations and specified times.
  • Forecast tsunami duration is the approximate length of time which the tsunami may produce dangerous currents and waves.
  • Forecast max tsunami height is the highest expected water level above the tide.
  • Forecasts are not provided for sites which have been impacted more than an hour prior to the time of this message.
SITE FORECAST START OF TSUNAMI FORECAST TSUNAMI DURATION FORECAST MAX TSUNAMI HEIGHT
Alaska, Homer 0250 AKST Jan 23 less than 1ft
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.

SITE TIME OF MEASUREMENT OBSERVED MAX TSUNAMI HEIGHT
Kodiak  Alaska 0329  PST Jan 23 0.6ft
Seward  Alaska 0331  PST Jan 23 0.4ft
Old Harbor  Alaska 0338  PST Jan 23  0.7ft
Sitka  Alaska 0318  PST Jan 23 0.4ft
Yakutat  Alaska 0335  PST Jan 23 0.5ft
Langara  BC 0330  PST Jan 23 0.4ft
PRELIMINARY EARTHQUAKE PARAMETERS
Magnitude 7.9
Origin Time 0032 AKST Jan 23 2018
0132  PST Jan 23 2018
0932  UTC Jan 23 2018
Coordinates 56.0 North 149.1 West
Depth 12 miles
Location 175 miles SE of Kodiak City, Alaska
360 miles S of Anchorage, Alaska
RECOMMENDED ACTIONS

See message number 5 for recommended actions.

IMPACTS

See message number 5 for possible impacts.

ADDITIONAL INFORMATION AND NEXT UPDATE

Refer to the internet site tsunami.gov for more information.

Pacific coastal residents outside California, Oregon, Washington, British Columbia and Alaska should refer to the Pacific Tsunami Warning Center messages at tsunami.gov.

This message will be updated within 30 minutes on this website: http://ntwc.arh.noaa.gov/


Public Tsunami Message Number 5

NWS National Tsunami Warning Center Palmer AK

312 AM AKST Tue Jan 23 2018

UPDATES

Tsunami Advisory in Effect for:

  • SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from Hinchinbrook Entrance, Alaska (90 miles E of Seward) to Chignik Bay, Alaska

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

  • The Tsunami Watch is canceled for the coastal areas of California, Oregon and Washington from The Cal./Mexico Border  to The Wash./BC Border
  • The Tsunami Warning is canceled for the coastal areas of British Columbia, Southeast Alaska and South Alaska and the Alaska Peninsula from The Wash./BC Border  to Hinchinbrook Entrance, Alaska (90 miles E of Seward)
  • The Tsunami Warning is canceled for the coastal areas of South Alaska and the Alaska Peninsula and Aleutian Islands from Chignik Bay, Alaska to Attu, Alaska

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

FORECASTS OF TSUNAMI ACTIVITY
  • A tsunami has been generated.  The first waves are forecasted to arrive at the following locations and specified times.
  • Forecast tsunami duration is the approximate length of time which the tsunami may produce dangerous currents and waves.
  • Forecast max tsunami height is the highest expected water level above the tide.
  • Forecasts are not provided for sites which have been impacted more than an hour prior to the time of this message.
SITE FORECAST START OF TSUNAMI FORECAST TSUNAMI DURATION FORECAST MAX TSUNAMI HEIGHT
Homer 0250 AKST Jan 23 less than 1ft
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.

 SITE TIME OF MEASUREMENT OBSERVED MAX TSUNAMI HEIGHT
Kodiak  Alaska 0329  PST Jan 23 0.6ft
Seward  Alaska 0331  PST Jan 23 0.4ft
Old Harbor  Alaska 0338  PST Jan 23 0.7ft
Sitka  Alaska 0318  PST Jan 23  0.4ft
Yakutat  Alaska 0335  PST Jan 23 0.5ft
PRELIMINARY EARTHQUAKE PARAMETERS
Magnitude 7.9
Origin Time 0032 AKST Jan 23 2018
0132  PST Jan 23 2018
0932  UTC Jan 23 2018
Coordinates 56.0 North 149.1 West
Depth 12 miles
Location 175 miles SE of Kodiak City, Alaska
360 miles S of Anchorage, Alaska
RECOMMENDED ACTIONS – UPDATED

Actions to protect human life and property will vary within tsunami advisory areas.

If you are in a tsunami advisory area:

  • Move out of the water, off the beach, and away from harbors, marinas, breakwaters, bays and inlets.
  • Be alert to and follow instructions from your local emergency officials because they may have more detailed or specific information for your location.
  • If you feel a strong earthquake or extended ground rolling take immediate protective actions such as moving inland and/or uphill preferably by foot.

Boat operators:

  • Where time and conditions permit, move your boat out to     sea to a depth of at least 180 feet.
  • If at sea avoid entering shallow water, harbors,     marinas, bays, and inlets to avoid floating and     submerged debris and strong currents.
  • Do not go to the shore to observe the tsunami.
  • Do not return to the coast until local emergency officials indicate it is safe to do so.
IMPACTS

Impacts will vary at different locations in the advisory areas.

If you are in a tsunami advisory area:

  • A tsunami with strong waves and currents is possible.
  • Waves and currents can drown or injure people who are in the water.
  • Currents at beaches and in harbors, marinas, bays, and inlets may be especially dangerous.
  • Some impacts may continue for many hours to days after arrival of the first wave.
  • The first wave may not be the largest so later waves may be larger.
  • Each wave may last 5 to 45 minutes as a wave encroaches and recedes.
  • Coasts facing all directions are threatened because the waves can wrap around islands and headlands and into bays.
  • Strong shaking or rolling of the ground indicates an earthquake has occurred and a tsunami may be imminent.
  • A rapidly receding or receded shoreline, unusual waves and sounds, and strong currents are signs of a tsunami.
  • The tsunami may appear as water moving rapidly out to sea, a gentle rising tide like flood with no breaking wave, as a series of breaking waves, or a frothy wall of water.
ADDITIONAL INFORMATION AND NEXT UPDATE

Refer to the internet site tsunami.gov for more information.

Pacific coastal residents outside California, Oregon, Washington, British Columbia and Alaska should refer to the Pacific Tsunami Warning Center messages at tsunami.gov.

This message will be updated within 30 minutes.

 


This is the latest update from the NOAA and the National Weather Service, issued at 01:42 Alaska Standard Time (AKST).

Click here to skip to advice for those in the tsunami warning area.


Public Tsunami Message Number 3 

NWS National Tsunami Warning Center Palmer AK

UPDATES

  • Revised magnitude
  • THE TSUNAMI WARNING REMAINS IN EFFECT
  • THE TSUNAMI WATCH REMAINS IN EFFECT

Tsunami Warning in Effect for:

  • BRITISH COLUMBIA, The Juan de Fuca Strait coast, the outer west coast of Vancouver Island, the central coast and northeast Vancouver Island, and the north coast and Haida Gwaii
  • SOUTHEAST ALASKA, The inner and outer coast from The BC/Alaska Border  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 Unimak Pass, Alaska (80 miles NE of Unalaska)
  • ALEUTIAN ISLANDS, Unimak Pass, Alaska (80 miles NE of Unalaska) to Attu, Alaska including the Pribilof Islands

Tsunami Watch in Effect for:

  • CALIFORNIA, The coast from The Cal./Mexico Border  to The Oregon/Cal. Border  including San Francisco Bay
  • OREGON, The coast from The Oregon/Cal. Border  to The Oregon/Wash. Border  including the Columbia River estuary coast
  • WASHINGTON, Outer coast from the Oregon/Washington border to Slip Point, Columbia River estuary coast, and the Juan de Fuca Strait coast

FORECASTS OF TSUNAMI ACTIVITY

Tsunami activity is forecasted to start at the following locations at the specified times.

FORECAST SITE START OF TSUNAMI
ALASKA
Kodiak 0145 AKST Jan 23
Seward 0155 AKST Jan 23
Elfin Cove 0155 AKST Jan 23
Sitka 0200 AKST Jan 23
Yakutat 0205 AKST Jan 23
Valdez 0215 AKST Jan 23
Sand Point 0220 AKST Jan 23
Cordova 0225 AKST Jan 23
Unalaska 0240 AKST Jan 23
Homer 0250 AKST Jan 23
Craig 0300 AKST Jan 23
Cold Bay 0300 AKST Jan 23
Adak 0305 AKST Jan 23
Shemya 0350 AKST Jan 23
Saint Paul 0400 AKST Jan 23
BRITISH COLUMBIA
Langara 0210 AKST Jan 23
Tofino 0340 AKST Jan 23
WASHINGTON
Neah Bay 0450  PST Jan 23
Moclips 0500  PST Jan 23
Long Beach 0500  PST Jan 23
Westport 0510  PST Jan 23
Port Angeles 0530  PST Jan 23
Port Townsend 0555  PST Jan 23
OREGON
Port Orford 0505  PST Jan 23
Seaside 0505  PST Jan 23
Charleston 0510  PST Jan 23
Newport 0515  PST Jan 23
Brookings 0515  PST Jan 23
CALIFORNIA
Crescent City 0520  PST Jan 23
Horse Mountain 0525  PST Jan 23
Fort Bragg 0525  PST Jan 23
Monterey 0555  PST Jan 23
San Francisco 0615  PST Jan 23
Port San Luis 0620  PST Jan 23
Santa Barbara 0635  PST Jan 23
Los Angeles Harb 0650  PST Jan 23
Oceanside 0700  PST Jan 23
Newport Beach 0700  PST Jan 23
La Jolla 0705  PST Jan 23

OBSERVATIONS OF TSUNAMI ACTIVITY

No tsunami observations are available to report.

PRELIMINARY EARTHQUAKE PARAMETERS – UPDATED

Magnitude 7.9
Origin Time 0032 AKST Jan 23 2018
0132  PST Jan 23 2018
0932  UTC Jan 23 2018
Coordinates 56.0 North 149.1 West
Depth 12 miles
Location 175 miles SE of Kodiak City, Alaska
360 miles S of Anchorage, Alaska

RECOMMENDED ACTIONS

Actions to protect human life and property will vary within tsunami warning areas.

If you are in a tsunami warning area:

  • Evacuate inland or to higher ground above and beyond designated tsunami hazard zones or move to an upper floor of a multi-story building depending on your situation.
  • Move out of the water, off the beach, and away from harbors, marinas, breakwaters, bays and inlets.
  • Be alert to and follow instructions from your local emergency officials because they may have more detailed or specific information for your location.
  • If you feel a strong earthquake or extended ground rolling take immediate protective actions such as moving inland and/or uphill preferably by foot.

Boat operators

  • Where time and conditions permit, move your boat out to sea to a depth of at least 180 feet.
  • If at sea avoid entering shallow water, harbors, marinas, bays, and inlets to avoid floating and submerged debris and strong currents.
  • Do not go to the shore to observe the tsunami.
  • Do not return to the coast until local emergency officials indicate it is safe to do so.

If you are in a tsunami watch area:

  • Prepare to take action and stay alert for further information.

IMPACTS

Impacts will vary at different locations in the warning areas.

If you are in a tsunami warning area:

  • A tsunami with damaging waves and powerful currents is possible.
  • Repeated coastal flooding is possible as waves arrive onshore, move inland, and drain back into the ocean.
  • Strong and unusual waves, currents and inland flooding can drown or injure people and weaken or destroy structures on land and in water.
  • Water filled with floating or submerged debris that can injure or kill people and weaken or destroy buildings and bridges is possible.
  • Strong and unusual currents and waves in harbors, marinas, bays, and inlets may be especially destructive.
  • Some impacts may continue for many hours to days after arrival of the first wave.
  • The first wave may not be the largest so later waves may be larger.
  • Each wave may last 5 to 45 minutes as a wave encroaches and recedes.
  • Coasts facing all directions are threatened because the waves can wrap around islands and headlands and into bays.
  • Strong shaking or rolling of the ground indicates an earthquake has occurred and a tsunami may be imminent.
  • A rapidly receding or receded shoreline, unusual waves and sounds, and strong currents are signs of a tsunami.
  • The tsunami may appear as water moving rapidly out to sea, a gentle rising tide like flood with no breaking wave, as a series of breaking waves, or a frothy wall of water.

ADDITIONAL INFORMATION AND NEXT UPDATE

Refer to the internet site tsunami.gov for more information.

Pacific coastal residents outside California, Oregon, Washington, British Columbia and Alaska should refer to the Pacific Tsunami Warning Center messages at tsunami.gov.

This message will be updated within 30 minutes on this website: http://ntwc.arh.noaa.gov/

 

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