Earthquake · Reviewed by USGS
M3.9 earthquake 15 km NNE of Alder Springs, CA
A magnitude 3.9 earthquake struck 15 km NNE of Alder Springs, CA at Jul 3, 2026, 01:39 UTC, at a depth of 14 km. The epicentre was 73 km (45 mi) W of Chico. 5 people reported feeling it to USGS.
Details
| Magnitude | 3.9 mw |
|---|---|
| Time | Jul 3, 2026, 01:39 UTC |
| Depth | 14.2 km |
| Coordinates | 39.785, -122.684 |
| Felt reports | 5 |
| Tsunami flag | None |
| Source | USGS event page |
01 — Nearby
Nearest cities
02 — Around it
Other earthquakes within 100 km
| Magnitude | Location | Distance | Depth | Time |
|---|---|---|---|---|
| 1.6 | 7 km SE of Redwood Valley, CA | 74 km / 46 mi | depth -1 km | |
| 1.1 | 9 km NW of Redwood Valley, CA | 72 km / 45 mi | depth 2 km | |
| 1.8 | 31 km NW of Covelo, CA | 71 km / 44 mi | depth 6 km | |
| 1.8 | 17 km ESE of Lake Pillsbury, CA | 51 km / 32 mi | depth 9 km | |
| 2.3 | 17 km SE of Lake Pillsbury, CA | 52 km / 33 mi | depth 7 km | |
| 2.0 | 8 km NNE of Brooktrails, CA | 64 km / 40 mi | depth 1 km | |
| 1.8 | 7 km NNW of Redwood Valley, CA | 69 km / 43 mi | depth 5 km | |
| 1.3 | 8 km SSE of Kelseyville, CA | 98 km / 61 mi | depth 7 km | |
| 1.7 | 14 km N of Brooktrails, CA | 63 km / 39 mi | depth 7 km | |
| 1.7 | 15 km N of Brooktrails, CA | 63 km / 39 mi | depth 7 km | |
| 1.2 | 1 km WSW of Redwood Valley, CA | 73 km / 46 mi | depth 6 km | |
| 1.3 | 11 km ESE of Willits, CA | 64 km / 40 mi | depth 9 km | |
| 2.3 | 30 km NNW of Covelo, CA | 70 km / 44 mi | depth 8 km | |
| 1.6 | 22 km NE of Rockport, CA | 84 km / 52 mi | depth 6 km | |
| 2.4 | 13 km WSW of Kelseyville, CA | 98 km / 61 mi | depth 33 km | |
| 2.4 | 6 km N of Redwood Valley, CA | 69 km / 43 mi | depth 2 km | |
| 1.8 | 14 km NNE of Brooktrails, CA | 61 km / 38 mi | depth 8 km | |
| 1.9 | 8 km N of Lake Pillsbury, CA | 41 km / 25 mi | depth 10 km | |
| 1.6 | 9 km NW of Redwood Valley, CA | 72 km / 45 mi | depth 6 km | |
| 1.8 | 9 km N of Covelo, CA | 48 km / 30 mi | depth 10 km | |
| 1.8 | 8 km NE of Talmage, CA | 76 km / 47 mi | depth 3 km | |
| 1.8 | 7 km NNW of Redwood Valley, CA | 69 km / 43 mi | depth 2 km | |
| 1.6 | 10 km NNE of Upper Lake, CA | 62 km / 39 mi | depth 8 km | |
| 1.7 | 36 km NE of Redway, CA | 100 km / 62 mi | depth 21 km | |
| 1.5 | 11 km N of Redwood Valley, CA | 66 km / 41 mi | depth 7 km |
USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.