Earthquake · reviewed by a seismologist
M 1.5md
Earthquake near Cloverdale, CA
No earthquake was likely felt in Cloverdale in the 24 hours to 2:49 am PST (10:49 UTC). The last one was M 1.7, 7 km (4 mi) SE, at 7:43 pm PST on 11 November 2026, estimated intensity II (weak) in town. Every earthquake near Cloverdale
This page: a magnitude 1.5 earthquake was recorded 10 km (6 mi) north of Cloverdale, CA, at 10:23 pm PDT on 14 October 2021 (05:23 UTC), 5.6 km deep.
USGS: 10km N of Cloverdale, CA
57 km (35 mi) NNW of Santa Rosa, CA · 134 km (84 mi) NNW of San Francisco, CA
- When
- 10:23 pm PDT on 14 October 2021 ()
- Where
- 10 km (6 mi) north of Cloverdale, CA · earthquakes near Cloverdale
- Magnitude
- M 1.5 (md)
- Depth
- 5.6 km below the surface
- Felt
- no reports yet
- Nearest
- Lake County, 33 km NE
- Nearest mapped fault
- Maacama fault, 3 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 1854 days ago
Earthquake alerts for Cloverdale, CA
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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 8 km (5 mi) from the epicentre. In Cloverdale, 10 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: Kelseyville, Lakeport, Soda Bay, North Lakeport, Clear Lake Riviera, Cobb.
How big was it?
This earthquake released about 5.4 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 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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
The largest earthquake within 50 km since 2016 was M 5.0 on 2016-12-14 — about 180,000 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.2 6 km ESE of Talmage, California · 26 km NNW of this epicentre
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 38.8947, -123.0127. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lake County, CA | 33 km (21 mi) | NE | earthquakes near Lake County |
| Sonoma County, CA | 42 km (26 mi) | S | earthquakes near Sonoma County |
| Mendocino County, CA | 70 km (44 mi) | NNW | earthquakes near Mendocino County |
| Napa County, CA | 74 km (46 mi) | SE | earthquakes near Napa County |
| Colusa County, CA | 74 km (46 mi) | ENE | earthquakes near Colusa County |
| Glenn County, CA | 95 km (59 mi) | NNE | earthquakes near Glenn County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.5 2km WSW of Anderson Springs, CA
- 1.5 1km NNW of The Geysers, CA
- 1.5 2km N of The Geysers, CA
- 1.9 8km NW of The Geysers, CA
- 1.9 10km SSE of Talmage, CA
- 2.1 10km SSE of Talmage, CA
- 1.6 1km NNW of The Geysers, CA
- 1.9 7km NW of The Geysers, CA
- 1.6 7km NW of The Geysers, CA
- 1.7 18km SE of Lake Pillsbury, CA
- 2.0 3km SSW of Anderson Springs, CA
- 2.9 2km SW of Anderson Springs, CA
- 1.8 6km W of Cobb, CA
- 1.8 5km NNW of The Geysers, CA
- 1.7 10km WNW of The Geysers, CA
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.