QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Brewster, WA

No earthquake was likely felt in Brewster in the 24 hours to 7:04 pm PST (03:04 UTC). The last one was M 1.6, 3 km (2 mi) SSE, at 11:54 am PDT on 4 November 2023, estimated intensity II (weak) in town. Every earthquake near Brewster

This page: a magnitude 1.6 earthquake was recorded 3 km (2 mi) south-southeast of Brewster, WA, at 11:54 am PDT on 4 November 2023 (18:54 UTC), 10 km deep.

USGS: 2 km SSE of Brewster, Washington

11:54 am PDT, Nov 4, 2023 · · 10 km deep · released about 8.4 lb of TNT

10 km30 km60 km120 km N Douglas County 37 kmOkanogan County 53 kmChelan County 68 kmGrant County 98 kmFerry County 102 kmLincoln County 115 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
11:54 am PDT on 4 November 2023 ()
Where
3 km (2 mi) south-southeast of Brewster, WA · earthquakes near Brewster
Magnitude
M 1.6 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Douglas County, 37 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1104 days ago

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 5 km (3 mi) from the epicentre. In Brewster, 3 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.

Earthquakes near other towns within 30 km: Bridgeport.

How big was it?

This earthquake released about 8.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 48.0735, -119.7670. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Douglas County, WA 37 km (23 mi) S earthquakes near Douglas County
Okanogan County, WA 53 km (33 mi) N earthquakes near Okanogan County
Chelan County, WA 68 km (42 mi) WSW earthquakes near Chelan County
Grant County, WA 98 km (61 mi) SSE earthquakes near Grant County
Ferry County, WA 102 km (63 mi) ENE earthquakes near Ferry County
Lincoln County, WA 115 km (71 mi) ESE earthquakes near Lincoln County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

13 earthquakes have been recorded within 50 km since this one.

  1. 0.6 14 km WSW of Conconully, Washington
  2. 1.7 7 km WSW of Chelan, Washington
  3. 1.9 10 km SSW of Granite Falls, Washington
  4. 1.5 7 km SSE of Chelan Falls, Washington
  5. 1.8 12 km WNW of Mansfield, Washington
  6. 1.6 9 km WNW of Okanogan, Washington
  7. 1.6 15 km WSW of Methow, Washington
  8. 2.4 5 km SSW of Chelan Falls, Washington
  9. 1.6 3 km W of North Omak, Washington
  10. 2.6 14 km E of Winthrop, Washington
  11. 1.8 20 km W of Nespelem Community, Washington
  12. 2.2 5 km N of Waterville, Washington
  13. 2.0 6 km NNE of Entiat, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.