Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Toppenish, WA
USGS: 29 km S of White Swan, Washington
53 km (33 mi) S of Yakima, WA
- When
- 12:24 am PDT on 21 March 2017 ()
- Where
- 40 km (25 mi) SW of Toppenish, WA · earthquakes near Toppenish
- Magnitude
- M 1.5 (ml)
- Depth
- 16 km below the surface
- Felt
- no reports yet
- Nearest
- Klickitat County, 29 km SSW
- Nearest mapped fault
- Toppenish Ridge structures, 16 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3482 days ago
A magnitude 1.5 earthquake was recorded 40 km (25 mi) SW of Toppenish, WA, at 12:24 am PDT on 21 March 2017 (07:24 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.5 about 6.2 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 46.1248, -120.6713. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Klickitat County, WA | 29 km (18 mi) | SSW | earthquakes near Klickitat County |
| Yakima County, WA | 37 km (23 mi) | N | earthquakes near Yakima County |
| Sherman County, OR | 81 km (50 mi) | S | earthquakes near Sherman County |
| Gilliam County, OR | 88 km (55 mi) | SSE | earthquakes near Gilliam County |
| Benton County, WA | 90 km (56 mi) | E | earthquakes near Benton County |
| Skamania County, WA | 100 km (62 mi) | W | earthquakes near Skamania County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.5 17 km SSE of White Swan, Washington
- 3.1 5 km WSW of Harrah, Washington
- 1.7 20 km S of White Swan, Washington
- 1.7 1 km SSE of Goldendale, Washington
- 1.5 13 km NNE of Roosevelt, Washington
- 2.0 8 km SSE of Bickleton, Washington
- 1.5 7 km ESE of Tampico, Washington
- 1.8 19 km NW of Bickleton, Washington
- 1.6 27 km WSW of White Swan, Washington
- 2.0 3 km ESE of Goldendale, Washington
- 1.9 11 km S of Bickleton, Washington
- 1.9 13 km E of Goldendale, Washington
- 2.1 12 km SSW of Bickleton, Washington
- 2.8 17 km SSE of White Swan, Washington
- 1.6 16 km SSW of Harrah, Washington
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.