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Weak mag. 2.1 earthquake - 23 mi northeast of Melbourne, Izard County, Arkansas, USA, on 2020-01-30 21:12:42 -06:00

Weak magnitude 2.1 earthquake at 5 km depth

31 Jan 12:44 UTC: First to report: USGS after 10 hours.

Earthquake details

Date & time	Jan 31, 2020 03:12:42 UTC
Local time at epicenter	2020-01-30 21:12:42 -06:00
Status	Confirmed
Magnitude	2.1
Depth	5.0 km
Epicenter latitude / longitude	36.22283°N / 91.5585°W (Arkansas, United States)
Antipode	36.223°S / 88.442°E
Shaking intensity	Very weak shaking
Felt	1 report
Primary data source	USGS (United States Geological Survey)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	4 km (3 mi) E of Ash Flat (pop: 1,060) \| Show on map \| Quakes nearby 18 km (11 mi) E of Horseshoe Bend (pop: 2,090) \| Show on map \| Quakes nearby 29 km (18 mi) SE of Salem (pop: 1,630) \| Show on map \| Quakes nearby 31 km (19 mi) N of Cave City (pop: 1,870) \| Show on map \| Quakes nearby 34 km (21 mi) S of Thayer (Missouri) (pop: 2,250) \| Show on map \| Quakes nearby 36 km (23 mi) ENE of Melbourne (pop: 1,780) \| Show on map \| Quakes nearby 51 km (32 mi) N of Batesville (pop: 10,700) \| Show on map \| Quakes nearby 53 km (33 mi) W of Pocahontas (Randolph County) (pop: 6,440) \| Show on map \| Quakes nearby 75 km (47 mi) E of Mountain Home (pop: 12,300) \| Show on map \| Quakes nearby 177 km (110 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

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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	5 km	4km E of Ash Flat, Arkansas (USA)	USGS

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

Seismograms

Seismic station: Mount Ida, Arkansas, USA (MIAR/US network) | Distance from quake: 261 km / 162 mi | Show on map | Station Info

Seismic station Mount Ida, Arkansas, USA: 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

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

Seismic station: St. Louis, MO (SLM/NM network) | Distance from quake: 293 km / 182 mi | Show on map | Station Info

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

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.
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: 369 km / 229 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: 396 km / 246 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: 455 km / 283 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 (1)

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.

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Yellville, Arkansas / Very weak shaking (MMI II) : I was in bed and felt it moving. I've had damage in the past from an earthquake.

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