Earthquake · reviewed by a seismologist
M 3.0ml
Earthquake near Valdez, AK
No earthquake was likely felt in Valdez in the 24 hours to 7:57 am AKST (16:57 UTC). The last one was M 4.4, 85 km (53 mi) NNW, at 11:11 am AKDT on 30 October 2026, estimated intensity II (weak) in town; 54 felt reports to USGS. Every earthquake near Valdez
This page: a magnitude 3.0 earthquake was recorded 39 km (25 mi) southwest of Valdez, AK, at 2:16 am AKDT on 29 July 2024 (10:16 UTC), 19 km deep.
USGS: 9 km W of Tatitlek, Alaska
- When
- 2:16 am AKDT on 29 July 2024 ()
- Where
- 39 km (25 mi) southwest of Valdez, AK · earthquakes near Valdez
- Magnitude
- M 3.0 (ml)
- Depth
- 19 km below the surface
- Felt
- no reports yet
- Nearest
- Chugach Census Area, 55 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 763 days ago
Earthquake alerts for Valdez, AK
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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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 31 km (19 mi) from the epicentre. In Valdez, 39 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 350,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 950 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 4.4 on 2022-07-09 — about 130 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 9.2 The 1964 Prince William Sound, Alaska Earthquake · 27 km W of this epicentre
- 6.7 Prince William Sound, Alaska · 24 km SSW of this epicentre
- 6.6 37 km WNW of Tatitlek, Alaska · 30 km NW of this epicentre
- 6.4 46 km WNW of Tatitlek, Alaska · 37 km WNW of this epicentre
- 6.1 54 km WNW of Tatitlek, Alaska · 46 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 60.8706, -146.8464. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Chugach Census Area, AK | 55 km (34 mi) | SE | earthquakes near Chugach Census Area |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.5 38 km WSW of Tatitlek, Alaska
- 1.9 12 km SW of Tatitlek, Alaska
- 1.8 30 km SSW of Tatitlek, Alaska
- 1.5 22 km WNW of Tatitlek, Alaska
- 1.6 29 km SSW of Tatitlek, Alaska
- 1.5 27 km NW of Valdez, Alaska
- 2.0 33 km NW of Valdez, Alaska
- 1.9 30 km WSW of Tatitlek, Alaska
- 3.0 29 km SSW of Tatitlek, Alaska
- 1.7 26 km SSW of Tatitlek, Alaska
- 1.6 6 km E of Tatitlek, Alaska
- 1.9 11 km WSW of Valdez, Alaska
- 1.7 15 km NW of Tatitlek, Alaska
- 1.5 27 km SSW of Tatitlek, Alaska
- 1.7 39 km WNW of Valdez, 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.