Contact | RSS | EN | DE | EL | ES | FR | IT | RU

Weak mag. 2.1 earthquake - 11 miles NNE of Cherokee Village, Arkansas, on Friday, October 30, 2020 at 02:54 GMT

Weak magnitude 2.1 earthquake at 5 km depth

30 Oct 12:50 UTC: First to report: USGS after 10 hours.
30 Oct 14:38: Hypocenter depth recalculated from 8.3 to 4.9 km (from 5.2 to 3 mi).

Earthquake details

Date & time	Oct 30, 2020 02:54:01 UTC
Local time at epicenter
Status	Confirmed
Magnitude	2.1
Depth	4.9 km
Epicenter latitude / longitude	36.444°N / 91.419°W (Sharp County, Arkansas, United States)
Antipode	36.444°S / 88.581°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	12 km (8 mi) ESE of Mammoth Spring Station (pop: 969) \| Show on map \| Quakes nearby 14 km (9 mi) SE of Thayer (Missouri) (pop: 2,250) \| Show on map \| Quakes nearby 21 km (13 mi) NNE of Highland (pop: 1,050) \| Show on map \| Quakes nearby 37 km (23 mi) ENE of Salem (pop: 1,630) \| Show on map \| Quakes nearby 39 km (24 mi) NE of Horseshoe Bend (pop: 2,090) \| Show on map \| Quakes nearby 45 km (28 mi) WNW of Pocahontas (Randolph County) (pop: 6,440) \| Show on map \| Quakes nearby 93 km (58 mi) NW of Jonesboro (pop: 73,900) \| Show on map \| Quakes nearby 93 km (58 mi) WNW of Paragould (Greene County) (pop: 27,900) \| Show on map \| Quakes nearby 98 km (61 mi) WSW of Poplar Bluff (Butler County, Missouri) (pop: 17,300) \| Show on map \| Quakes nearby 205 km (127 mi) NNE of Littlerock (pop: 198,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	8.9 x 10⁷ joules (24.8 kilowatt hours) \| about seismic energy

Show interactive Map

[smaller] [bigger]

Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
2.1	4.9 km	12 Km ESE of Mammoth Spring, Arkansas, USA	USGS

Most recent quakes Top 20 past 24 hrs Quakes in the US Arkansas

Seismograms

Seismic station: St. Louis, MO (SLM/NM network) | Distance from quake: 265 km / 165 mi | Show on map | Station Info

Seismic station St. Louis, MO: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Show less

Seismic station St. Louis, MO: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station St. Louis, MO: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Mount Ida, Arkansas, USA (MIAR/US network) | Distance from quake: 288 km / 179 mi | Show on map | Station Info

Seismic station Mount Ida, Arkansas, USA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Mount Ida, Arkansas, USA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Mount Ida, Arkansas, USA: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Fairfield, IL (FFIL/NM network) | Distance from quake: 343 km / 213 mi | Show on map | Station Info

Seismic station Fairfield, IL: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Fairfield, IL: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Fairfield, IL: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Univ. of Southern Indiana, Evansville, IN (USIN/NM network) | Distance from quake: 373 km / 232 mi | Show on map | Station Info

Seismic station Univ. of Southern Indiana, Evansville, IN: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Univ. of Southern Indiana, Evansville, IN: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Univ. of Southern Indiana, Evansville, IN: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Vicksburg, Mississippi (VBMS/US network) | Distance from quake: 477 km / 296 mi | Show on map | Station Info

Seismic station Vicksburg, Mississippi: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Vicksburg, Mississippi: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Vicksburg, Mississippi: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

At magnitude 2.1, such a quake wouldn't normally be felt by people except under very favorable conditions.

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

Earlier earthquakes in the same area

Click here to search our database for earlier earthquakes in the same area since 1900!

Try our free app!

Android | iOS version

Why is there advertising on this site?

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:

Improved multilanguage support
Tsunami alerts
Faster responsiveness

Thanks to your past donations, these features have been added recently:

Design upgrade
Detailed quake stats
Additional seismic data sources

Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS

Thank you!

Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.

Volcanoes & Earthquakes