Earthquake · reviewed by a seismologist
M 2.7ml
Earthquake near Malta, MT
No earthquake was likely felt in Malta in the 24 hours to 11:12 pm MST (06:12 UTC), and no quake recorded near town since 2016 is estimated to have been strong enough to notice there. Every earthquake near Malta
This page: a magnitude 2.7 earthquake was recorded 24 km (15 mi) south-southeast of Malta, MT, at 7:33 am MDT on 10 July 2021 (13:33 UTC), 10 km deep.
USGS: 24 km SSE of Malta, Montana
- When
- 7:33 am MDT on 10 July 2021 ()
- Where
- 24 km (15 mi) south-southeast of Malta, MT · earthquakes near Malta
- Montana today
- every earthquake in Montana in the last 24 hours
- Magnitude
- M 2.7 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Phillips County, 15 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1882 days ago
Earthquake alerts for Malta, MT
Get a notification in this browser when USGS records an earthquake near Malta, MT. 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 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 23 km (14 mi) from the epicentre. In Malta, 24 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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
- Magna, Utah 2020 M 5.7 32,000× the energy of this one
- Around the size people start to feel M 3.0 2.8× the energy of this one
- This earthquake M 2.7 about 340 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
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 48.1508, -107.7899. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Phillips County, MT | 15 km (9 mi) | NW | earthquakes near Phillips County |
| Valley County, MT | 86 km (53 mi) | ENE | earthquakes near Valley County |
| Blaine County, MT | 92 km (57 mi) | WNW | earthquakes near Blaine County |
| Garfield County, MT | 115 km (71 mi) | SSE | earthquakes near Garfield County |
| Petroleum County, MT | 117 km (73 mi) | SSW | earthquakes near Petroleum County |
| Fergus County, MT | 149 km (93 mi) | SW | earthquakes near Fergus County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have 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.
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.