Quakes · tsunami

2020 perryville, alaska earthquake

USGS-US7000ASVB

issued: 2020-07-22 06:12Z
status: cancelled 2020-07-25 06:12Z
self-cancels: 2020-07-25 06:12Z
authority: USGS NEIC
sea: Gulf of Alaska
position: 55.072, -158.596
source: usgs · first seen 2026-09-03 15:13Z

Original warning text

2020 PERRYVILLE, ALASKA EARTHQUAKE.
1. EARTHQUAKE MAGNITUDE 7.8 (MWW) IN 55.072N 158.596W, DEPTH 28 KM AT 220612Z JUL 20.
2. A TSUNAMI MESSAGE WAS ISSUED FOR THIS EVENT. FOLLOW THE TSUNAMI WARNING CENTRES.
3. USGS EVENT US7000ASVB. https://earthquake.usgs.gov/earthquakes/eventpage/us7000asvb

This area · earthquake & tsunami bulletins

72 within 180 nm since 1997 · 0 in the last 12 months · 0 in force now

91 km sse of sand point, alaska2025-07-20
96 km sse of sand point, alaska2025-07-17
2025 sand point, alaska earthquake2025-07-16
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146 km sse of sand point, alaska2024-08-01
85 km ssw of sand point, alaska2023-08-03

Season · when earthquake & tsunami bulletins happen here

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Timeline · 8 messages since 2020-07-22 · closed 2020-07-25

2020 perryville, alaska earthquake this message2020-07-22 → 2020-07-25
101 km ese of sand point, alaska2020-07-22 → 2020-07-25
Earthquake with magnitude of 7.4 has occurred in vicinity 55-12N 158-36W at 220613Z jul2020-07-22 → 2020-07-22
Cancel NAVAREA XII 313/20 and this msg, tsunami warning cancelled2020-07-22 → 2020-07-22
76 km ese of sand point, alaska2020-07-22 → 2020-07-25
Earthquake with magnitude of 7.8 has occurred in vicinity 55-12N 158-36W at 220613Z jul2020-07-22 → 2020-07-22
Cancel NAVAREA XII 315/20 and this msg, tsunami warning cancelled2020-07-22 → 2020-07-22
73 km s of ivanof bay, alaska2020-07-22 → 2020-07-25

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