QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Centennial Park, AZ

USGS: 35 km NNW of Supai, Arizona

91 km (57 mi) SE of St. George, UT

10:58 pm MST, Nov 3, 2018 · · 5.0 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Washington County 101 kmKane County 119 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
10:58 pm MST on 3 November 2018 ()
Where
48 km (30 mi) SSE of Centennial Park, AZ · earthquakes near Centennial Park
Magnitude
M 2.5 (ml)
Depth
5.0 km below the surface
Felt
5 reports · strongest reported intensity II
Nearest
Washington County, 101 km NW
Nearest mapped fault
Sevier/Toroweap fault, 8 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 2786 days ago

A magnitude 2.5 earthquake was recorded 48 km (30 mi) SSE of Centennial Park, AZ, at 10:58 pm MST on 3 November 2018 (05:58 UTC). 5 people have reported feeling it to USGS. This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 · 47 km NE 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 36.5467, -112.7977. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washington County, UT 101 km (62 mi) NW earthquakes near Washington County
Kane County, UT 119 km (74 mi) NE earthquakes near Kane County
Coconino County, AZ 122 km (76 mi) SE earthquakes near Coconino County
Mohave County, AZ 126 km (78 mi) SW earthquakes near Mohave County

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

Aftershocks so far

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

  1. 2.3 10 km SW of Centennial Park, Arizona
  2. 1.8 6 km SE of Fredonia, Arizona
  3. 2.1 1 km N of Cane Beds, Arizona
  4. 1.6 20 km S of Centennial Park, Arizona
  5. 1.6 14 km S of Centennial Park, Arizona
  6. 1.8 16 km SSW of Cane Beds, Arizona
  7. 1.6 15 km SSW of Cane Beds, Arizona
  8. 2.6 14 km S of Centennial Park, Arizona
  9. 2.3 17 km S of Centennial Park, Arizona
  10. 1.7 13 km SSW of Cane Beds, Arizona
  11. 2.8 37 km SSE of Kaibab, Arizona
  12. 1.7 12 km SSE of Fredonia, Arizona
  13. 2.1 8 km E of Kaibab, Arizona
  14. 1.6 10 km SSW of Kaibab, Arizona
  15. 1.7 21 km SE of Fredonia, Arizona

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.