QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

Earthquake near Saratoga Springs, UT

USGS: 0 km NNW of Saratoga Springs, Utah

in Saratoga Springs, UT · 47 km (29 mi) S of Salt Lake City, UT

8:06 pm MDT, Apr 10, 2019 · · 6.5 km deep · released about 130 lb of TNT

10 km30 km60 km120 km N Utah County 33 kmSalt Lake County 35 kmWasatch County 63 kmDavis County 80 kmMorgan County 87 kmSummit County 98 kmWeber County 102 kmJuab County 103 kmTooele County 104 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
8:06 pm MDT on 10 April 2019 ()
Where
in Saratoga Springs, UT · earthquakes near Saratoga Springs
Magnitude
M 2.4 (ml)
Depth
6.5 km below the surface
Felt
77 reports · strongest reported intensity III
Nearest
Utah County, 33 km SE
Nearest mapped fault
Utah Lake faults, 2 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2661 days ago

A magnitude 2.4 earthquake was recorded in Saratoga Springs, UT, at 8:06 pm MDT on 10 April 2019 (02:06 UTC). 77 people have reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Lehi, Eagle Mountain, American Fork, Highland, Cedar Hills, Pleasant Grove.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 80,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.2× the energy of this one
  4. This earthquake M 2.4 about 130 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:

  1. 5.3 Near Salt Lake City, Utah · 40 km NNE of this epicentre
  2. 5.0 1 km NE of Magna, Utah · 43 km NNW of this epicentre
  3. 5.0 1 km SSW of Mount Nebo, Utah · 47 km S 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 40.3543, -111.9085. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Utah County, UT 33 km (21 mi) SE earthquakes near Utah County
Salt Lake County, UT 35 km (22 mi) N earthquakes near Salt Lake County
Wasatch County, UT 63 km (39 mi) E earthquakes near Wasatch County
Davis County, UT 80 km (50 mi) NNW earthquakes near Davis County
Morgan County, UT 87 km (54 mi) NNE earthquakes near Morgan County
Summit County, UT 98 km (61 mi) NE earthquakes near Summit County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

59 earthquakes have been recorded within 50 km since this one.

  1. 2.1 6 km NNE of Magna, Utah
  2. 2.1 6 km NNE of Magna, Utah
  3. 3.1 1 km NE of Magna, Utah
  4. 1.9 5 km NE of Magna, Utah
  5. 2.2 5 km NE of Magna, Utah
  6. 2.2 3 km NE of Magna, Utah
  7. 1.8 6 km NNE of Magna, Utah
  8. 2.3 6 km NNE of Magna, Utah
  9. 2.0 6 km NE of Magna, Utah
  10. 2.2 3 km NE of Magna, Utah
  11. 1.6 6 km NE of Magna, Utah
  12. 2.0 6 km NE of Magna, Utah
  13. 2.0 5 km NE of Magna, Utah
  14. 1.9 7 km NNE of Magna, Utah
  15. 1.9 7 km NE of Magna, 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.