Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Santa Rosa, CA
No earthquake was likely felt in Santa Rosa in the 24 hours to 9:04 pm PST (05:04 UTC). The last one was M 1.9, 5 km (3 mi) NE, at 2:01 pm PDT on 23 October 2026, estimated intensity II (weak) in town. Every earthquake near Santa Rosa
This page: a magnitude 1.6 earthquake was recorded 29 km (18 mi) north of Santa Rosa, CA, at 4:56 am PDT on 22 March 2024 (11:56 UTC), 5.3 km deep.
USGS: 8 km S of The Geysers, CA
29 km (18 mi) N of Santa Rosa, CA · 107 km (66 mi) NNW of San Francisco, CA
- When
- 4:56 am PDT on 22 March 2024 ()
- Where
- 29 km (18 mi) north of Santa Rosa, CA · earthquakes near Santa Rosa
- Magnitude
- M 1.6 (md)
- Depth
- 5.3 km below the surface
- Felt
- no reports yet
- Nearest
- Sonoma County, 24 km SW
- Nearest mapped fault
- Maacama fault, 4 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 958 days ago
Earthquake alerts for Santa Rosa, CA
Get a notification in this browser when USGS records an earthquake near Santa Rosa, CA. 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 9 km (6 mi) from the epicentre. In Santa Rosa, 29 km away, the estimate is intensity I (not felt). 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: Middletown, Cobb, Healdsburg, Windsor, Calistoga, Larkfield-Wikiup.
How big was it?
This earthquake released about 6.6 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.
- Mineral, Virginia 2011 M 5.8 2,300,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
- Around the size people start to feel M 3.0 140× the energy of this one
- This earthquake M 1.6 about 6.6 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 150,000 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.3 3 km E of Bloomfield, California · 43 km S of this epicentre
- 5.3 Northern California · 43 km S 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 38.7020, -122.7592. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sonoma County, CA | 24 km (15 mi) | SW | earthquakes near Sonoma County |
| Napa County, CA | 43 km (27 mi) | ESE | earthquakes near Napa County |
| Lake County, CA | 45 km (28 mi) | N | earthquakes near Lake County |
| Colusa County, CA | 70 km (43 mi) | NE | earthquakes near Colusa County |
| Marin County, CA | 72 km (45 mi) | S | earthquakes near Marin County |
| Yolo County, CA | 74 km (46 mi) | E | earthquakes near Yolo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.7 9 km NNE of Clearlake Oaks, CA
- 1.8 7 km NW of The Geysers, CA
- 1.5 8 km NW of The Geysers, CA
- 1.6 0 km NNE of The Geysers, CA
- 1.9 8 km WNW of Cobb, CA
- 1.6 3 km WSW of Anderson Springs, CA
- 3.2 2 km ESE of The Geysers, CA
- 2.1 3 km WSW of Anderson Springs, CA
- 1.8 7 km NW of The Geysers, CA
- 1.7 2 km NE of The Geysers, CA
- 1.8 6 km W of Cobb, CA
- 1.7 8 km SW of Calistoga, CA
- 2.2 8 km NW of The Geysers, CA
- 1.8 7 km NW of The Geysers, CA
- 2.9 7 km 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.