QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near East Carbon City, UT

USGS: 16 km SSE of Sunnyside, Utah

7:25 pm MDT, Mar 18, 2019 · · -1.2 km deep · released about 15 lb of TNT

Every earthquake near East Carbon City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carbon County 37 kmEmery County 56 kmGrand County 80 kmDuchesne County 98 kmUintah County 105 kmSanpete County 108 km
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
7:25 pm MDT on 18 March 2019 ()
Where
17 km (11 mi) SSE of East Carbon City, UT · earthquakes near East Carbon City
Magnitude
M 1.8 (ml)
Depth
-1.2 km below the surface
Felt
no reports yet
Nearest
Carbon County, 37 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2745 days ago

A magnitude 1.8 earthquake was recorded 17 km (11 mi) SSE of East Carbon City, UT, at 7:25 pm MDT on 18 March 2019 (01:25 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 39.4090, -110.3197. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Carbon County, UT 37 km (23 mi) NW earthquakes near Carbon County
Emery County, UT 56 km (35 mi) SW earthquakes near Emery County
Grand County, UT 80 km (50 mi) SE earthquakes near Grand County
Duchesne County, UT 98 km (61 mi) N earthquakes near Duchesne County
Uintah County, UT 105 km (65 mi) NE earthquakes near Uintah County
Sanpete County, UT 108 km (67 mi) W earthquakes near Sanpete County

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. 1.6 17 km SSE of Sunnyside, Utah
  2. 2.1 Utah
  3. 1.7 17 km SSE of Sunnyside, Utah
  4. 1.5 18 km SSE of Sunnyside, Utah
  5. 1.5 16 km SSE of Sunnyside, Utah
  6. 1.8 18 km SSE of Sunnyside, UT
  7. 1.6 7 km E of Kenilworth, Utah
  8. 2.1 18 km SSE of Sunnyside, Utah
  9. 2.2 18 km SSE of Sunnyside, Utah
  10. 1.8 17 km SSE of Sunnyside, Utah
  11. 1.5 17 km SSE of Sunnyside, Utah
  12. 1.5 17 km SSE of Sunnyside, Utah
  13. 1.7 18 km SSE of Sunnyside, Utah
  14. 2.0 19 km SSE of Sunnyside, Utah
  15. 1.6 7 km ENE of Kenilworth, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.