#Earthquake_alert - M7.6, #Hypocenter: 17 km, ALASKA PENINSULA, Tue 21 Jul 2020 - 22:12:43 UTC-08:00. #TSUNAMI WARNING! https://www.emsc-csem.org/Earthquake/earthquake.php?id=878808

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[usgs] M 7.8 - 99 km SSE of Perryville, Alaska https://on.doi.gov/3hnpLq8  -
PAGER - GREEN ShakeMap - IV DYFI? - VIII
Time
2020-07-22 06:12:42 UTC
2020-07-22 06:12:42 UTC at epicenter
Location
55.105°N 158.473°W
Depth
10.00 km (6.21 mi)
Source: @Alert_Monitor

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TSUNAMI THREAT MESSAGE NUMBER 1. Source: @tsunamiwatch

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PTWC TSUNAMI THREAT MESSAGE #2. Source: @tsunamiwatch

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Tsunami impacted areas map. Source: @tsunamiwatch

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Local DART buoy shows significant peak to peak open ocean wave height of 3.5 meters for M7.8 Alaska subduction earthquake (only one preliminary measurement at this point in time). Source: @CPPGeophysics

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At this point in time, the signal appears to be much smaller at the neighboring DART stations, so this relatively large wave amplitude could be a local effect, which would be good news. Source: @CPPGeophysics

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Mw=7.8, ALASKA PENINSULA (Depth: 33 km), 2020/07/22 06:12:42 UTC - Full details here: Source: @geoscope_ipgp http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000asvb

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From @patton_cascadia

#UnitedStates #earthquake #alert #warning #mitigation #TSUNAMI https://twitter.com/patton_cascadia/status/1285838389464326144

WEST COAST: There is no tsunami threat to Washington, Oregon, or California from the 7.8-magnitude earthquake in Alaska. (Source: NTWC). Source: @ENSAlerts

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A thread from @seismo_steve

#UnitedStates #earthquake #alert #warning #mitigation #TSUNAMI https://twitter.com/seismo_steve/status/1285825658036326400