QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Fredonia, AZ

No earthquake was likely felt in Fredonia in the 24 hours to 3:41 am MST (10:41 UTC). The last one was M 2.3, 8 km (5 mi) SE, at 5:18 pm MST on 6 November 2025, estimated intensity II (weak) in town. Every earthquake near Fredonia

This page: a magnitude 1.8 earthquake was recorded 13 km (8 mi) east-southeast of Fredonia, AZ, at 3:21 pm MST on 11 February 2024 (22:21 UTC), 18 km deep.

USGS: 12 km ESE of Fredonia, Arizona

3:21 pm MST, Feb 11, 2024 · · 18 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Kane County 67 kmWashington County 105 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
3:21 pm MST on 11 February 2024 ()
Where
13 km (8 mi) east-southeast of Fredonia, AZ · earthquakes near Fredonia
Magnitude
M 1.8 (ml)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Kane County, 67 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1005 days ago

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 Fredonia, 13 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.

Earthquakes near other towns within 30 km: Kanab.

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 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× 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 lists one earthquake of M5 or more within 50 km:

  1. 5.6 21 km SE of Fredonia, Arizona · 11 km SSE 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 36.8968, -112.3982. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kane County, UT 67 km (41 mi) NE earthquakes near Kane County
Washington County, UT 105 km (65 mi) WNW earthquakes near Washington County
Coconino County, AZ 131 km (82 mi) SSE earthquakes near Coconino County
Garfield County, UT 133 km (83 mi) NE earthquakes near Garfield County
Iron County, UT 138 km (86 mi) NW earthquakes near Iron County

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

Aftershocks so far

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

  1. 2.3 8 km SE of Fredonia, Arizona
  2. 1.7 7 km SE of Fredonia, Arizona
  3. 1.6 6 km SE of Fredonia, Arizona
  4. 1.8 6 km SE of Fredonia, Arizona
  5. 1.8 8 km S of Fredonia, Arizona
  6. 2.2 7 km SSE of Fredonia, Arizona
  7. 2.2 8 km S of Cane Beds, Arizona
  8. 1.9 5 km SSW of Kanab, Utah
  9. 2.3 7 km NE of Hildale, Utah
  10. 2.6 43 km NE of Supai, Arizona
  11. 1.5 4 km SE of Fredonia, Arizona
  12. 1.9 4 km ESE of Fredonia, Arizona
  13. 1.7 17 km NE of Hildale, Utah
  14. 1.8 16 km ESE of Springdale, Utah
  15. 2.3 5 km NE of Hildale, 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.