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Tsunami Warnings for US/Canada/Alaska after HUGE Earthquakes
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Tsunami Warnings for Entire West Coasts of US, Canada & Alaska after HUGE Earthquakes in Alaska Tsunami alerts have been issued for the entire west coast of North America after a huge 8.2-magnitude earthquake struck at a shallow depth some 160 miles off the coast of Alaska. BBC/USGS 23 Jan 2018. http://i.dailymail.co.uk/1/2018/01/2...55_634x683.jpg Tsunami warnings were issued for Alaska and the west coasts of Canada and the US The first powerful earthquake of magnitude 8.2 struck off the southern coast of Alaska early Tuesday, prompting tsunami warnings. The quake struck at 0931 GMT in the Gulf of Alaska, 280 kilometers (175 miles) southeast of the town of Kodiak, the US Geological Survey said. The epicenter was 10 kilometers under the seabed. Tsunami warnings were issued for Alaska and the west coast of Canada, the National Tsunami Warning Center said. Less-ominous tsunami watches were issued for the US west coast -- the entire coasts of California and Oregon and part of Washington state. In Alaska, authorities urged coast dwellers to seek safety. "If you are located in this coastal area, move inland to higher ground," the Anchorage Office of Emergency Management said. "Tsunami warnings mean that a tsunami with significant inundation is possible or is already occurring. Tsunamis are a series of waves dangerous many hours after initial arrival time. The first wave may not be the largest." UPDATES; M8.2 - Gulf of Alaska Preliminary Earthquake Report Magnitude 8.2 Date-Time 23 Jan 2018 09:31:41 UTC 23 Jan 2018 09:31:41 near epicenter 23 Jan 2018 05:31:41 standard time in your timezone Location 56.057N 149.097W Depth 10 km Distances 260.2 km (161.3 mi) SE of Chiniak, Alaska 576.7 km (357.6 mi) S of Anchorage, Alaska 587.0 km (363.9 mi) S of Eagle River, Alaska 608.3 km (377.2 mi) S of Knik-Fairview, Alaska 920.1 km (570.5 mi) WSW of Juneau, Alaska Location Uncertainty Horizontal: 6.5 km; Vertical 1.8 km Parameters Nph = 207; Dmin = 286.6 km; Rmss = 1.06 seconds; Gp = 66° Version = Event ID us 2000cmy3 M7.9 - Gulf of Alaska Preliminary Earthquake Report Magnitude 7.9 Date-Time 23 Jan 2018 09:31:41 UTC 23 Jan 2018 09:31:41 near epicenter 23 Jan 2018 05:31:41 standard time in your timezone Location 56.050N 149.064W Depth 10 km Distances 262.2 km (162.6 mi) SE of Chiniak, Alaska 577.6 km (358.1 mi) S of Anchorage, Alaska 587.8 km (364.5 mi) S of Eagle River, Alaska 609.2 km (377.7 mi) S of Knik-Fairview, Alaska 918.5 km (569.5 mi) WSW of Juneau, Alaska Location Uncertainty Horizontal: 6.1 km; Vertical 1.8 km Parameters Nph = 306; Dmin = 288.7 km; Rmss = 0.79 seconds; Gp = 28° Version = Event ID us 2000cmy3 ***This event has been revised. M7.0 - Gulf of Alaska Preliminary Earthquake Report Magnitude 7.0 Date-Time 23 Jan 2018 09:31:43 UTC 23 Jan 2018 09:31:43 near epicenter 23 Jan 2018 05:31:43 standard time in your timezone Location 55.910N 149.052W Depth 10 km Distances 272.3 km (168.8 mi) ESE of Onihitsk (historical), Alaska 593.3 km (367.9 mi) S of Anchorage, Alaska 603.5 km (374.2 mi) S of Eagle River, Alaska 624.9 km (387.4 mi) S of Knik-Fairview, Alaska 923.7 km (572.7 mi) WSW of Juneau, Alaska Location Uncertainty Horizontal: 0.0 km; Vertical 11.7 km Parameters Nph = 27; Dmin = 0.0 km; Rmss = 0.77 seconds; Gp = 0° Version = 2 Event ID ak 18173527 Alaska is bracing itself for a small tsunami after a huge 7.9-magnitude earthquake struck at a shallow depth some 160 miles off the state's coast. While alerts were originally issued across the entire west coast of America and Canada, they have since been withdrawn for all states except Alaska. The US Geological Survey said the quake struck 256 km (157 miles) southeast of Chiniak, Alaska at a depth of 10 km at 0931 GMT on Tuesday morning. The quake prompted a red tsunami warning for parts of Alaska and Canada and and a tsunami watch for the entire US west coast, the US Tsunami Warning System said. Live Updates The latest from AP: 35 mins ago... A 7.9 magnitude earthquake struck off Alaska's Kodiak Island early Tuesday, prompting a tsunami warning for a large swath of the state's coast and sending some residents fleeing to higher ground. Officials at the National Tsunami Center canceled the warning after a few tense hours after waves failed to show up in coastal Alaska communities. Alaska's Division of Homeland Security and Emergency Management said there have been no reports of damage, so far. The strong earthquake hit at 12:30 a.m. and was recorded about 170 miles southeast of Kodiak Island in the Gulf of Alaska. Kodiak Island is located about 200 miles southwest of Anchorage, Alaska's largest city, which was not under a tsunami threat. Reports varied about how long the shaking lasted. In the popular cruise ship town of Seward, about 230 miles northeast of Kodiak Island, fire chief Eddie Athey said the quake felt like a gentle rattle and lasted for up to 90 seconds. "It went on long enough that you start thinking to yourself, 'Boy, I hope this stops soon because it's just getting worse,"' Athey said. Initially, the USGS said the earthquake was a magnitude 8.2. That prompted the tsunami warning for coastal Alaska and Canada's British Columbia, while the remainder of the U.S. West Coast was under a watch. An advisory remained in effect for a small part of the state. Watches were canceled for Washington, Oregon, California and Hawaii. Officials in Japan also said there was no tsunami threat there. Warnings from the National Weather Service sent to cellphones in Alaska warned: "Emergency Alert. Tsunami danger on the coast. Go to high ground or move inland." Kodiak officials warned residents to evacuate if they lived in low-lying areas. Residents scrambled to safety, and some sought refuge in schools that were transformed into shelters. The city of Kodiak was projected to see the first wave about an hour after the quake, but 90 minutes after the quake, there was no report of any waves. Lt. Tim Putney of the Kodiak Police Department said: "We haven't seen anything yet or had any reports of a wave." However, officials told people to hold fast at evacuation centers until further notice. He said the town has several shelters above the 100-foot mark, and they were still encouraging people below that level to evacuate. The earthquake woke Putney out of a dead sleep, and he estimates it shook for at least 30 seconds. "I've been Kodiak for 19 years that was the strongest, longest lasting one I've ever felt," he said by telephone. Alaska Gov. Bill Walker said on his Twitter feed that he has been in contact with local officials and the state's adjutant general, and he urged residents to heed any warnings to move inland or to higher ground. The Alaska Earthquake Information Center said the quake was felt widely in several communities on the Kenai Peninsula and throughout southern Alaska, but it also had no immediate reports of damage. People reported on social media that the quake was felt hundreds of miles away, in Anchorage. Kerry Seifert, an emergency management specialist in the state emergency operations center, said no reports of damage had been received as the timeline for initial waves reaching some communities passed. "This is almost too soon to be into it to get that kind of information," he said. In Seward, about 110 miles southeast of Anchorage, residents retreated to higher ground or left on the only road out of the city, fire chief Athey said. He described it as a controlled evacuation and compared it to folks driving home from a holiday fireworks show. Larry LeDoux, superintendent of the Kodiak Island Borough School District, said schools were open as shelters and estimated there were about 500 people at the high school. He described the atmosphere inside as calm, with people waiting for any updates. He said sirens go off in the community every week, as a test to make sure they are working. He said the sirens were sounded for the early Tuesday tsunami warning. Keith Perkins, who lives in the southeast Alaska community of Sitka, arrived at the high school early Tuesday morning, after an alarm on his cellphone alerted him of the tsunami warning. He says the city's sirens also went off later. He said people on Facebook were chattering back and forth about whether this was real or not and what they should do. Given the magnitude of the earthquake, Perkins said he thought it best to head to school, the tsunami evacuation point, even though in the past he felt his home was at a "high-enough spot." "I figured I'd probably just better play it safe," he said. He said police officers were directing traffic and the parking lot at the school was filling up. He said he saw some people carrying suitcases or backpacks. Perkins said he didn't bring anything along. An hour ago... While the most dramatic of the warnings are over, police departments including those in Kodiak are still telling people to remain where they are. People have told they will be updated but they should stay in high ground for now. Many of the warnings are now being cancelled. But that doesn't mean the night passed without incident: people across Alaska were told to evacuate from their houses and move to safe areas, and the tsunami warning covered much of the west coast of the US and Canada. It's a reminder of the speed with which people could be forced to flee from something even more dangerous, and how possible such an event could be. Here's the PA report on the latest in Alaska: An earthquake with a preliminary magnitude of 8.2 has struck off Alaska's Kodiak Island, prompting a tsunami warning for a large part of coastal Alaska and Canada's British Columbia while the remainder of the US West Coast was under a watch. The strong earthquake hit at 12:32am local time and was recorded about 175 miles south east of Kodiak Island. Warnings from the National Weather Service sent to mobile phones in Alaska warned: "Emergency Alert. Tsunami danger on the coast. Go to high ground or move inland." Kodiak officials warned residents to evacuate if they lived in low-lying areas. About two hours after the quake, the city of Kodiak, which was projected to see the first wave at about 1:45am, still had no reports of a wave hitting. Lieutenant Tim Putney of the Kodiak Police Department said: "We haven't seen anything yet or had any reports of a wave." However, officials were telling people to hold fast at evacuation centres until further notice. He said the town has several shelters above the 100-foot mark, and they were still encouraging people below that level to evacuate. The earthquake woke Lt Putney up out of a dead sleep, and he estimates it shook for at least 30 seconds. "I've been Kodiak for 19 years that was the strongest, longest lasting one I've ever felt," he said by telephone. But he said the police department has received no reports of damage. The Alaska Earthquake Information Centre said the quake was felt widely in several communities on the Kenai Peninsula and throughout southern Alaska, but it also had no immediate reports of damage. People reported on social media that the quake was felt hundreds of miles away, in Anchorage. Kerry Seifert, an emergency management specialist in the state emergency operations center, said the center had not received any reports of damage as the timeline for initial waves reaching some communities had passed. "This is almost too soon to be into it to get that kind of information," he said. "And certainly, communities are climbing hills, some of them." Larry LeDoux, superintendent of the Kodiak Island Borough School District, said schools were open as shelters and estimated there were about 500 people at the high school. He described the atmosphere inside as calm, with people waiting for any updates. He said sirens go off in the community every week, as a test to make sure they are working. He said the sirens were sounded for the early Tuesday tsunami warning. Keith Perkins, who lives in the southeast Alaska community of Sitka, arrived at the high school early Tuesday morning, after an alarm on his cellphone alerted him of the tsunami warning. He says the city's sirens also went off later. He said people on Facebook were chattering back and forth about whether this was real or not and what they should do. Given the magnitude of the earthquake, Mr Perkins said he thought it best to head to school, the tsunami evacuation point, even though in the past he felt his home was at a "high-enough spot". "I figured I'd probably just better play it safe," he said. He said police officers were directing traffic and the parking lot at the school was filling up. He said he saw some people carrying suitcases or backpacks. Mr Perkins said he did not bring anything along. Here's the new advisory map, which covers a lot less of the country and removes the immediate warnings. There's still some danger in some parts of Alaska, as you can see, but the rest of the country is no longer considered under threat. https://images.scribblelive.com/2018...b03faeab68.jpg 2 hours ago... The new estimate for Kodiak, where the tsunami is expect to arrive first, is in just a few minutes. But it will only be around a foot high, according to the tsunami centre. The tsunami advisory is still in effect in south Alaska and the Alaska Peninsula. Everything else appears to have been called off. The tsunami watch has now been cancelled for the states in the mainland US. Larry LeDoux, superintendent of the Kodiak Island Borough School District, says schools were open as shelters and estimated there were about 500 people at the high school. He described the atmosphere inside as calm, with people waiting for any updates. He said sirens go off in the community every week, as a test to make sure they are working. He said the sirens were sounded for the early Tuesday tsunami warning. An earthquake with a preliminary magnitude of 8.2 struck early Tuesday about 175 miles southeast of Kodiak Island. A tsunami warning was issued for a large swath of coastal Alaska and Canada's British Columbia while the remainder of the U.S. West Coast was under a watch. Another update from Kodiak police: They have posted a letter on Facebook that says the tsunami warning is still in effect and that people need to remain at high ground. It gives useful information for people in the area – the high school has space for more people, and they should park at the library – and makes clear that there will be more updates soon. Here's the latest on the advice to follow if you're in an affected area: https://images.scribblelive.com/2018...835eb13020.jpg The US west coast is on high alert for a tsunami after a 7.9-magnitude earthquake struck 160 miles off the coast of Alaska. The shallow depth of the seismic shock's epicentre, just 6.2 miles below the surface, prompted the US Tsunami Warning System to issue a red warning for Alaska and western Canada. The Kodiak PD update about water leaving the harbour is the first reliable report about the channel clearing in Alaska. But a number of other reports on social media suggest the same. If true, that is a worrying sign: the waters move back as the wave gathers, and so a substantial amount of change in sea levels could suggest something large on its way. Another update from the police in Kodiak, where any tsunami would be detected first: TSUNAMI UPDATE: 0229 hours2 hours ago... The first tsunami observations are coming in. In Old Harbor, Alaska, waves of half a foot were detected, the tsunami centre says. 3 hours ago... The tsunami watch has been cancelled for Hawaii, reports suggest. A watch is still in effect for the west coast of the mainland US, and the more dramatic warning is in place for the Canada and Alaska coast. The Kodiak police department posted an update 15 minutes ago: TSUNAMI UPDATE3 hours ago... Authorities in Kodiak, Alaska, are telling residents to move to higher ground after a strong earthquake struck nearby, prompting tsunami warning for a large swath of coastal Alaska and Canada's British Columbia while the remainder of the U.S. West Coast was under a watch. A dispatcher at the Kodiak police department answered a call from The Associated Press by saying, "If this about the tsunami, you need to get to higher ground immediately." If there's a tsunami, it will hit land in the next few minutes. The first hit will be Kodiak, in Alaska. Local reports say the entire town has been evacuated. And it provides this advice on what to do: 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. The tsunami centre has sent out this advice on how any potential activity might look: 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. |
Re: Tsunami Warnings for US/Canada/Alaska after HUGE Earthquakes
Another one in the same region:
M6.9 - Gulf of Alaska Preliminary Earthquake Report Magnitude 6.9 Date-Time
Version = 2 Event ID ak 18173519 |
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