20 km N of Springdale, Utah

2020-04-06 04:07 UTC · 12 km deep · released about 7.1 lb of TNT

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2020-04-06 04:07 UTC
Magnitude: M 1.6 (ml)
Depth: 12 km below the surface
Felt: no reports yet
Nearest: Washington County, 43 km WSW
Status: Reviewed by a seismologist

USGS · last changed by USGS 2365 days ago · we first saw it 2365 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.1 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 2,100,000× the energy of this one
Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
Around the size people start to feel M 3.0 130× the energy of this one
This earthquake M 1.6 about 7.1 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.

Where

Map loads when it scrolls into view

Epicentre 37.3705, -113.0185. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Washington County, UT	43 km (27 mi)	ENE of here	earthquakes near Washington County
Iron County, UT	65 km (40 mi)	SSE of here	earthquakes near Iron County
Kane County, UT	107 km (66 mi)	W of here	earthquakes near Kane County
Beaver County, UT	111 km (69 mi)	S of here	earthquakes near Beaver County
Piute County, UT	133 km (82 mi)	SW of here	earthquakes near Piute 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 9 km WNW of Alton, Utah 09:36 UTC
1.8 8 km NW of Cedar City, Utah 14:07 UTC
1.8 10 km SSW of Orderville, Utah 10:39 UTC
1.7 13 km SSE of Kanarraville, Utah 06:05 UTC
2.1 12 km E of Brian Head, Utah 08:50 UTC
1.6 9 km E of Springdale, Utah 23:56 UTC
1.5 12 km SSE of Kanarraville, Utah 08:51 UTC
1.6 14 km ENE of Springdale, Utah 00:41 UTC
2.4 9 km S of Cedar City, Utah 20:55 UTC
2.0 11 km WNW of Cedar City, Utah 12:59 UTC
1.6 12 km SSE of Cedar City, Utah 03:11 UTC
1.5 15 km WNW of Cedar City, Utah 13:57 UTC
1.8 14 km WNW of Cedar City, Utah 11:52 UTC
1.8 16 km WNW of Cedar City, Utah 17:22 UTC
2.0 4 km SSW of Summit, Utah 11:34 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 22:51 UTC. 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.