Earthquake · reviewed by a seismologist
M 4.3ml
Earthquake near Kalifornsky, AK
Yes. A magnitude 4.3 earthquake was recorded 31 km (20 mi) southeast of Kalifornsky, AK, at 2:30 am AKST on 1 November 2026 (11:30 UTC), 70 km deep. 113 people have reported feeling it to USGS.
USGS: 24 km SE of Kasilof, Alaska
- When
- 2:30 am AKST on 1 November 2026 ()
- Where
- 31 km (20 mi) southeast of Kalifornsky, AK · earthquakes near Kalifornsky
- Magnitude
- M 4.3 (ml)
- Depth
- 70 km below the surface
- Felt
- 113 reports · strongest reported intensity IV
- Measured shaking
- intensity III (ShakeMap)
- USGS impact alert
- green
- Tsunami
- USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
- Nearest
- Kenai Peninsula Borough, 79 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 15 hours ago
Earthquake alerts for Kalifornsky, AK
Get a notification in this browser when USGS records an earthquake near Kalifornsky, AK. 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 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 99 km (62 mi) from the epicentre. In Kalifornsky, 31 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.
Likely felt in: Kalifornsky 31 km, intensity II · Soldotna 33 km, intensity II · Sterling 39 km, intensity II · Kenai 43 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 43 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 4,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 180× the energy of this one
- Magna, Utah 2020 M 5.7 130× the energy of this one
- This earthquake M 4.3 about 43 tons of TNT
- Around the size people start to feel M 3.0 this one released 89× 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 4.9 on 2026-06-27 — about 7.9 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 6.0 31 km S of Funny River, Alaska · 15 km ENE of this epicentre
- 6.0 6 km SSE of Fox River, Alaska · 44 km S of this epicentre
- 5.9 13 km N of Fox River, Alaska · 25 km S of this epicentre
- 5.2 17 km WNW of Clam Gulch, Alaska · 43 km WNW 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 60.1980, -150.9320. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kenai Peninsula Borough, AK | 79 km (49 mi) | WNW | earthquakes near Kenai Peninsula Borough |
| Anchorage Municipality, AK | 141 km (87 mi) | NE | earthquakes near Anchorage Municipality |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| felt reports | 111 | 113 | |
| felt reports | 110 | 111 | |
| felt reports | 109 | 110 | |
| felt reports | 108 | 109 | |
| felt reports | 106 | 108 | |
| felt reports | 105 | 106 | |
| felt reports | 104 | 105 | |
| felt reports | 103 | 104 | |
| felt reports | 102 | 103 | |
| felt reports | 99 | 102 | |
| felt reports | 98 | 99 | |
| felt reports | 97 | 98 |
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.