Earthquake · reviewed by a seismologist
M 2.4md
Earthquake near Redway, CA
No earthquake was likely felt in Redway in the 24 hours to 3:50 am PST (11:50 UTC). The last one was M 5.0, 153 km (95 mi) WNW, at 8:56 pm PST on 4 November 2026, estimated intensity II (weak) in town; 145 felt reports to USGS. Every earthquake near Redway
This page: a magnitude 2.4 earthquake was recorded 17 km (11 mi) north of Redway, CA, at 6:56 pm PDT on 24 July 2022 (01:56 UTC), 31 km deep. 1 person has reported feeling it to USGS.
USGS: 17km N of Redway, CA
- When
- 6:56 pm PDT on 24 July 2022 ()
- Where
- 17 km (11 mi) north of Redway, CA · earthquakes near Redway
- Magnitude
- M 2.4 (md)
- Depth
- 31 km below the surface
- Felt
- 1 report · strongest reported intensity I
- Nearest
- Humboldt County, 49 km N
- Nearest mapped fault
- Little Salmon fault, 22 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 1570 days ago
Earthquake alerts for Redway, CA
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This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Redway, 17 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 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
- Magna, Utah 2020 M 5.7 95,000× the energy of this one
- Around the size people start to feel M 3.0 8.5× the energy of this one
- This earthquake M 2.4 about 110 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 6.2 on 2021-12-20 — about 540,000 times the energy of this one.
Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:
- 7.2 The 1992 Petrolia, California Earthquake · 35 km W of this epicentre
- 6.0 Near Rio Dell, California · 41 km NW of this epicentre
- 6.0 31 km NW of Shelter Cove, California · 43 km W of this epicentre
- 6.0 30 km SSW of Scotia, California · 40 km W of this epicentre
- 5.6 33 km SW of Scotia, California · 47 km W 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 40.2752, -123.8212. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Humboldt County, CA | 49 km (30 mi) | N | earthquakes near Humboldt County |
| Trinity County, CA | 73 km (45 mi) | NE | earthquakes near Trinity County |
| Mendocino County, CA | 99 km (62 mi) | SSE | earthquakes near Mendocino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.7 13km SSW of Ferndale, CA
- 1.8 11km SSW of Ferndale, CA
- 2.3 4km ENE of Petrolia, CA
- 1.5 17km E of Rio Dell, CA
- 1.8 8km ESE of Redway, CA
- 1.7 20km NNE of Rockport, CA
- 1.7 4km NNW of Redway, CA
- 3.7 7km WSW of Petrolia, CA
- 4.1 3km SSE of Fortuna, CA
- 1.9 6km NNE of Hydesville, CA
- 2.6 5km NNE of Hydesville, CA
- 4.3 36km NE of Redway, CA
- 2.7 7km N of Petrolia, CA
- 1.9 18km ENE of Hydesville, CA
- 2.4 9km N of Petrolia, 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.