Earthquake · reviewed by a seismologist
M 2.0ml
Earthquake near Houston, AK
No earthquake was likely felt in Houston in the 24 hours to 6:47 am AKST (15:47 UTC). The last one was M 2.8, 13 km (8 mi) WSW, at 6:17 am AKST on 6 November 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Houston
This page: a magnitude 2.0 earthquake was recorded 5 km (3 mi) northwest of Houston, AK, at 1:35 pm AKDT on 13 October 2023 (21:35 UTC), 18 km deep.
USGS: 5 km NW of Houston, Alaska
49 km (31 mi) N of Anchorage, AK
- When
- 1:35 pm AKDT on 13 October 2023 ()
- Where
- 5 km (3 mi) northwest of Houston, AK · earthquakes near Houston
- Magnitude
- M 2.0 (ml)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Anchorage Municipality, 63 km SSE
- Nearest mapped fault
- Castle Mountain fault, 3 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 1113 days ago
Earthquake alerts for Houston, AK
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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 Houston, 5 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.
Earthquakes near other towns within 30 km: Willow, Big Lake, Meadow Lakes, Knik-Fairview, Tanaina, Wasilla.
How big was it?
This earthquake released about 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
- Magna, Utah 2020 M 5.7 350,000× the energy of this one
- Around the size people start to feel M 3.0 32× the energy of this one
- This earthquake M 2.0 about 30 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 7.1 on 2018-11-30 — about 45,000,000 times the energy of this one.
Before 2016, the USGS record lists 18 earthquakes of M5 or more within 50 km; the five largest:
- 5.9 23 km NE of Willow, Alaska · 29 km NNE of this epicentre
- 5.8 14 km NNE of Fishhook, Alaska · 47 km ENE of this epicentre
- 5.6 11 km NW of Big Lake, Alaska · 15 km SW of this epicentre
- 5.6 5 km N of Susitna, Alaska · 33 km WSW of this epicentre
- 5.5 2 km ENE of Eagle River, Alaska · 42 km SSE 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 61.6592, -149.8988. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Anchorage Municipality, AK | 63 km (39 mi) | SSE | earthquakes near Anchorage Municipality |
| Matanuska-Susitna Borough, AK | 71 km (44 mi) | NNE | earthquakes near Matanuska-Susitna Borough |
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.
- 2.0 14 km NNW of Meadow Lakes, Alaska
- 3.1 15 km NNE of Houston, Alaska
- 1.9 17 km S of Susitna North, Alaska
- 1.8 Southern Alaska
- 1.5 Southern Alaska
- 1.5 12 km N of Willow, Alaska
- 2.6 3 km SW of Big Lake, Alaska
- 1.6 Southern Alaska
- 1.6 5 km SSW of Houston, Alaska
- 1.9 1 km ENE of Houston, Alaska
- 1.6 11 km SSE of Susitna North, Alaska
- 2.0 8 km ENE of Susitna, Alaska
- 1.8 Southern Alaska
- 1.6 Southern Alaska
- 1.7 19 km S of Susitna North, Alaska
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.