Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Evanston, WY
No earthquake was likely felt in Evanston in the 24 hours to 6:25 pm MST (01:25 UTC). The last one was M 4.7, 40 km (25 mi) S, at 7:49 am MST on 22 January 2026, estimated intensity III (weak) in town; 4,305 felt reports to USGS. Every earthquake near Evanston
This page: a magnitude 1.6 earthquake was recorded 39 km (24 mi) northwest of Evanston, WY, at 1:14 pm MST on 30 December 2018 (20:14 UTC), 18 km deep.
USGS: 10 km W of Woodruff, Utah
99 km (61 mi) NNE of Salt Lake City, UT · 52 km (33 mi) ESE of Logan, UT
- When
- 1:14 pm MST on 30 December 2018 ()
- Where
- 39 km (24 mi) northwest of Evanston, WY · earthquakes near Evanston
- Magnitude
- M 1.6 (ml)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Rich County, 13 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2874 days ago
Earthquake alerts for Evanston, WY
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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 it was probably too small to be felt, even directly above it. In Evanston, 39 km away, the estimate is intensity I (not felt). 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 6.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,200,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
- Around the size people start to feel M 3.0 140× the energy of this one
- This earthquake M 1.6 about 6.8 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 lists 3 earthquakes of M5 or more within 50 km:
- 5.8 8 km W of Garden City, Utah · 50 km NNW of this epicentre
- 5.5 26 km E of Avon, Utah · 18 km W of this epicentre
- 5.2 16 km ENE of North Logan, Utah · 42 km NW 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 41.5185, -111.2862. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Rich County, UT | 13 km (8 mi) | NNE | earthquakes near Rich County |
| Cache County, UT | 45 km (28 mi) | WNW | earthquakes near Cache County |
| Morgan County, UT | 53 km (33 mi) | SSW | earthquakes near Morgan County |
| Weber County, UT | 56 km (35 mi) | WSW | earthquakes near Weber County |
| Uinta County, WY | 66 km (41 mi) | ESE | earthquakes near Uinta County |
| Summit County, UT | 77 km (48 mi) | SSE | earthquakes near Summit County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 1.7 13 km E of North Logan, Utah
- 1.6 4 km SE of Avon, Utah
- 1.6 12 km ENE of Paradise, Utah
- 1.8 14 km ESE of Richmond, Utah
- 1.5 16 km W of Garden, Utah
- 2.2 4 km E of Huntsville, Utah
- 1.9 4 km E of Huntsville, Utah
- 1.7 12 km ESE of Millville, Utah
- 1.7 10 km WSW of Garden, Utah
- 2.3 10 km WSW of Garden, Utah
- 1.6 10 km WSW of Garden, Utah
- 1.6 10 km WSW of Garden, Utah
- 1.5 3 km ENE of Huntsville, Utah
- 1.6 12 km ENE of Avon, Utah
- 2.3 Utah
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.