QuakeIndex

Earthquake · reviewed by a seismologist

M 4.4mw

Earthquake near Santa Rosa, CA

No earthquake was likely felt in Santa Rosa in the 24 hours to 6:45 pm PST (02:45 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 4.4 earthquake was recorded 4 km (2 mi) north of Santa Rosa, CA, at 6:39 pm PDT on 13 September 2022 (01:39 UTC), 5.6 km deep. 6,902 people have reported feeling it to USGS.

USGS: 3km N of Santa Rosa, CA

in Santa Rosa, CA

6:39 pm PDT, Sep 13, 2022 · · 5.6 km deep · released about 58 tons of TNT

Every earthquake near Santa Rosa Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sonoma County 20 kmNapa County 33 kmMarin County 47 kmLake County 70 kmSolano County 71 kmYolo County 74 kmSan Francisco County 88 kmColusa County 88 kmContra Costa County 90 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
6:39 pm PDT on 13 September 2022 ()
Where
4 km (2 mi) north of Santa Rosa, CA · earthquakes near Santa Rosa
Magnitude
M 4.4 (mw)
Depth
5.6 km below the surface
Felt
6,902 reports · strongest reported intensity VI
Measured shaking
intensity VI (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Sonoma County, 20 km WNW
Nearest mapped fault
Rodgers Creek fault, under 1 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 346 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 129 km (80 mi) from the epicentre. In Santa Rosa, 4 km away, the estimate is intensity IV (light). 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.

Likely felt in: Santa Rosa 4 km, intensity IV · Windsor 12 km, intensity IV · Rohnert Park 15 km, intensity IV · Kenwood 16 km, intensity IV · Calistoga 16 km, intensity IV · Healdsburg 21 km, intensity IV · Angwin 25 km, intensity III · Agua Caliente 25 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 58 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 130× the energy of this one
  3. Magna, Utah 2020 M 5.7 92× the energy of this one
  4. This earthquake M 4.4 about 58 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 120× more

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 8.5 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 6.0 The 2014 South Napa, California Earthquake · 45 km SE of this epicentre
  2. 5.3 3 km E of Bloomfield, California · 20 km SSW of this epicentre
  3. 5.3 Northern California · 20 km SSW 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 38.4750, -122.7072. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sonoma County, CA 20 km (12 mi) WNW earthquakes near Sonoma County
Napa County, CA 33 km (21 mi) E earthquakes near Napa County
Marin County, CA 47 km (29 mi) S earthquakes near Marin County
Lake County, CA 70 km (44 mi) N earthquakes near Lake County
Solano County, CA 71 km (44 mi) ESE earthquakes near Solano County
Yolo County, CA 74 km (46 mi) ENE earthquakes near Yolo County

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

Aftershocks so far

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

  1. 1.7 6km NW of The Geysers, CA
  2. 2.1 2km SW of Anderson Springs, CA
  3. 1.7 2km WSW of Anderson Springs, CA
  4. 3.1 2km WSW of Anderson Springs, CA
  5. 1.8 4km SSE of The Geysers, CA
  6. 1.5 8km NW of The Geysers, CA
  7. 1.5 3km SE of The Geysers, CA
  8. 1.7 5km WNW of Cobb, CA
  9. 1.7 5km WNW of Cobb, CA
  10. 1.5 10km WNW of The Geysers, CA
  11. 1.6 2km NW of The Geysers, CA
  12. 1.6 2km NW of The Geysers, CA
  13. 1.7 13km NW of The Geysers, CA
  14. 1.7 3km W of Cobb, CA
  15. 1.6 6km W of Cobb, 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

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