Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Cle Elum, WA
No earthquake was likely felt in Cle Elum in the 24 hours to 5:21 pm PST (01:21 UTC). The last one was M 2.8, 18 km (11 mi) W, at 10:31 pm PDT on 25 June 2026, estimated intensity II (weak) in town; 32 felt reports to USGS. Every earthquake near Cle Elum
This page: a magnitude 1.8 earthquake was recorded 35 km (22 mi) southwest of Cle Elum, WA, at 9:21 pm PDT on 5 April 2018 (04:21 UTC), less than 1 km deep.
USGS: 13 km W of Cliffdell, Washington
- When
- 9:21 pm PDT on 5 April 2018 ()
- Where
- 35 km (22 mi) southwest of Cle Elum, WA · earthquakes near Cle Elum
- Magnitude
- M 1.8 (ml)
- Depth
- 0.9 km below the surface
- Felt
- no reports yet
- Nearest
- Kittitas County, 47 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3120 days ago
Earthquake alerts for Cle Elum, WA
Get a notification in this browser when USGS records an earthquake near Cle Elum, WA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 13 km (8 mi) from the epicentre. In Cle Elum, 35 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
How big was it?
This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 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 46.9647, -121.2493. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kittitas County, WA | 47 km (29 mi) | ENE | earthquakes near Kittitas County |
| Yakima County, WA | 69 km (43 mi) | SE | earthquakes near Yakima County |
| Pierce County, WA | 69 km (43 mi) | W | earthquakes near Pierce County |
| King County, WA | 73 km (46 mi) | NW | earthquakes near King County |
| Lewis County, WA | 96 km (60 mi) | WSW | earthquakes near Lewis County |
| Chelan County, WA | 110 km (69 mi) | NNE | earthquakes near Chelan County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 1.6 13 km NNW of Thorp, Washington
- 1.6 23 km ENE of Ashford, Washington
- 1.6 22 km ENE of Ashford, Washington
- 1.6 24 km ENE of Ashford, Washington
- 1.7 15 km SW of Nile, Washington
- 1.5 22 km ENE of Ashford, Washington
- 2.0 22 km ENE of Ashford, Washington
- 2.0 22 km ENE of Ashford, Washington
- 2.0 22 km ENE of Ashford, Washington
- 1.6 16 km SW of Nile, Washington
- 2.0 13 km WSW of Tieton, Washington
- 2.0 21 km ESE of Packwood, Washington
- 1.5 22 km ENE of Ashford, Washington
- 2.0 12 km NNE of Cliffdell, Washington
- 1.8 23 km ENE of Ashford, 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.