QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Parks, AZ

USGS: 9 km S of Parks, Arizona

29 km (18 mi) W of Flagstaff, AZ

1:43 pm MST, Mar 18, 2017 · · 2.4 km deep · released about 240 lb of TNT

Every earthquake near Parks Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coconino County 74 kmYavapai County 84 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
1:43 pm MST on 18 March 2017 ()
Where
10 km (6 mi) S of Parks, AZ · earthquakes near Parks
Magnitude
M 2.6 (ml)
Depth
2.4 km below the surface
Felt
no reports yet
Nearest
Coconino County, 74 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3405 days ago

A magnitude 2.6 earthquake was recorded 10 km (6 mi) S of Parks, AZ, at 1:43 pm MST on 18 March 2017 (20:43 UTC). This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

Earthquakes near other towns within 30 km: Williams, Kachina Village, Flagstaff, Mountainaire.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 2 earthquakes of M5 or more within 50 km:

  1. 6.2 Near Flagstaff, Arizona · 22 km E of this epicentre
  2. 6.2 Near Flagstaff, Arizona · 22 km ENE 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 35.1748, -111.9430. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Coconino County, AZ 74 km (46 mi) NNE earthquakes near Coconino County
Yavapai County, AZ 84 km (52 mi) SW earthquakes near Yavapai County

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

Aftershocks so far

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

  1. 2.5 14 km N of Clarkdale, Arizona
  2. 2.6 20 km NE of Parks, Arizona
  3. 2.6 9 km WSW of Williams, Arizona
  4. 2.7 10 km ESE of Flagstaff, Arizona
  5. 3.3 4 km ESE of Flagstaff, Arizona
  6. 3.3 13 km E of Flagstaff, Arizona
  7. 3.1 10 km ESE of Flagstaff, Arizona
  8. 2.7 9 km SSW of Parks, 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.