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Minor mag. 0.8 earthquake - Explosion - 1 Km SE of Amboy, Washington, on Friday, Nov 18, 2022 at 1:19 pm (GMT -8) -

Minor magnitude 0.8 earthquake at 1 km depth

19 Nov 01:36 UTC: First to report: USGS after 4 hours.

Earthquake details

Date & time	Nov 18, 2022 21:19:29 UTC -
Local time at epicenter	Friday, Nov 18, 2022 at 1:19 pm (GMT -8)
Status	Confirmed
Magnitude	0.8
Depth	0.8 km
Epicenter latitude / longitude	45.9005°N / 122.436°W (Washington, United States)
Antipode	45.901°S / 57.564°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	West Crater (28 km / 17 mi)
Nearby towns and cities	1 km (1 mi) SE of Amboy (pop: 1,610) \| Show on map \| Quakes nearby 15 km (10 mi) NNE of Battle Ground (Clark County) (pop: 19,400) \| Show on map \| Quakes nearby 27 km (17 mi) NE of Salmon Creek (pop: 19,700) \| Show on map \| Quakes nearby 28 km (17 mi) NNE of Orchards (pop: 19,600) \| Show on map \| Quakes nearby 34 km (21 mi) NNE of Vancouver (pop: 172,900) \| Show on map \| Quakes nearby 45 km (28 mi) N of Eugene (Oregon) (pop: 110,600) \| Show on map \| Quakes nearby 46 km (29 mi) NNE of Portland (Oregon) (pop: 632,300) \| Show on map \| Quakes nearby 54 km (34 mi) NNE of Beaverton (Oregon) (pop: 96,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1 x 10⁶ joules (0.278 kilowatt hours) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
0.8	0.8 km	Explosion - 1 Km SE of Amboy, Washington	USGS
0.8	0.8 km	Washington-Oregon Border Region	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in the US Washington State

Seismograms

Seismic station: Southwest Flank 2, Mount St. Helens (SWF2/CC network) | Distance from quake: 35 km / 22 mi | Show on map | Station Info

Seismic station Southwest Flank 2, Mount St. Helens: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Southwest Flank 2, Mount St. Helens: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Southwest Flank 2, Mount St. Helens: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: September lobe, Mt. St. Helens (Dome sta) (SEP/CC network) | Distance from quake: 38 km / 24 mi | Show on map | Station Info

Seismic station September lobe, Mt. St. Helens (Dome sta): vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station September lobe, Mt. St. Helens (Dome sta): horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station September lobe, Mt. St. Helens (Dome sta): horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Vault, Mount St. Helens (VALT/CC network) | Distance from quake: 40 km / 25 mi | Show on map | Station Info

Seismic station Vault, Mount St. Helens: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Vault, Mount St. Helens: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Vault, Mount St. Helens: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Hoala (HOA/CC network) | Distance from quake: 42 km / 26 mi | Show on map | Station Info

Seismic station Hoala: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Hoala: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Hoala: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Hiyu Mountain (HIYU/CC network) | Distance from quake: 71 km / 44 mi | Show on map | Station Info

Seismic station Hiyu Mountain: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Hiyu Mountain: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Hiyu Mountain: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

At magnitude 0.8, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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