Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Girdwood, AK
No earthquake was likely felt in Girdwood in the 24 hours to 11:28 pm AKST (08:28 UTC). The last one was M 1.8, 8 km (5 mi) SE, at 10:01 am AKDT on 19 October 2026, estimated intensity II (weak) in town. Every earthquake near Girdwood
This page: a magnitude 1.9 earthquake was recorded 6 km (4 mi) south of Girdwood, AK, at 12:54 pm AKDT on 8 July 2022 (20:54 UTC), 14 km deep.
USGS: 5 km S of Girdwood, Alaska
54 km (34 mi) SE of Anchorage, AK
- When
- 12:54 pm AKDT on 8 July 2022 ()
- Where
- 6 km (4 mi) south of Girdwood, AK · earthquakes near Girdwood
- Magnitude
- M 1.9 (ml)
- Depth
- 14 km below the surface
- Felt
- no reports yet
- Nearest
- Anchorage Municipality, 32 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1540 days ago
Earthquake alerts for Girdwood, 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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 5 km (3 mi) from the epicentre. In Girdwood, 6 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 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 4.2 on 2020-06-18 — about 2,800 times the energy of this one.
Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 22 km ENE of Whittier, Alaska · 46 km E of this epicentre
- 6.3 27 km ENE of Whittier, Alaska · 49 km E of this epicentre
- 6.0 21 km N of Whittier, Alaska · 27 km ENE of this epicentre
- 5.7 13 km S of Girdwood, Alaska · 8 km S of this epicentre
- 5.6 17 km W of Whittier, Alaska · 18 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 60.8914, -149.1558. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Anchorage Municipality, AK | 32 km (20 mi) | NNW | earthquakes near Anchorage Municipality |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.5 22 km S of Sunrise, Alaska
- 2.1 18 km N of Hope, Alaska
- 1.5 25 km NNE of Moose Pass, Alaska
- 1.5 8 km NNW of Girdwood, Alaska
- 1.7 9 km SSE of Girdwood, Alaska
- 2.3 7 km SE of Eagle River, Alaska
- 1.6 23 km N of Girdwood, Alaska
- 1.5 23 km NNE of Moose Pass, Alaska
- 2.4 8 km SSE of Girdwood, Alaska
- 1.5 11 km ESE of Elmendorf Air Force Base, Alaska
- 1.7 7 km W of Moose Pass, Alaska
- 1.6 2 km WSW of Girdwood, Alaska
- 1.5 25 km ESE of Elmendorf Air Force Base, Alaska
- 1.6 2 km NW of Hope, Alaska
- 1.5 22 km NNE of Girdwood, 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.