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Weak mag. 2.8 earthquake - 10.9 mi northeast of Pocahontas, Randolph County, Arkansas, USA, on Tuesday, Sep 27, 2022 at 3:35 am (GMT -5) -

Weak mag. 2.8 earthquake - 10.9 mi northeast of Pocahontas, Randolph County, Arkansas, USA, on Tuesday, Sep 27, 2022 at 3:35 am (GMT -5) Weak mag. 2.8 earthquake - 10.9 mi northeast of Pocahontas, Randolph County, Arkansas, USA, on Tuesday, Sep 27, 2022 at 3:35 am (GMT -5)

Weak magnitude 2.8 earthquake at 11 km depth

27 Sep 08:42 UTC: First to report: USGS after 6 minutes.
27 Sep 12:20: Magnitude recalculated from 2.4 to 2.8. Hypocenter depth recalculated from 15.1 to 10.8 km (from 9.4 to 6.7 mi). Epicenter location corrected by 1.2 km (0.7 mi) towards SW.

Earthquake details

Date & timeSep 27, 2022 08:35:39 UTC -
Local time at epicenterTuesday, Sep 27, 2022 at 3:35 am (GMT -5)
Depth10.8 km
Epicenter latitude / longitude36.40283°N / 90.88367°W (Randolph, Arkansas, United States)
Antipode36.403°S / 89.116°E
Shaking intensityWeak shaking
Felt6 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities2 km (1 mi) SSE of Maynard (pop: 417) | Show on map | Quakes nearby
18 km (11 mi) NNE of Pocahontas (Randolph County) (pop: 6,440) | Show on map | Quakes nearby
25 km (15 mi) SSW of Doniphan (Missouri) (pop: 1,990) | Show on map | Quakes nearby
27 km (17 mi) W of Corning (pop: 3,160) | Show on map | Quakes nearby
52 km (32 mi) NW of Paragould (Greene County) (pop: 27,900) | Show on map | Quakes nearby
59 km (37 mi) SW of Poplar Bluff (Butler County, Missouri) (pop: 17,300) | Show on map | Quakes nearby
64 km (40 mi) NNW of Jonesboro (pop: 73,900) | Show on map | Quakes nearby
224 km (139 mi) NE of Littlerock (pop: 198,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 7.9°C (46 F), humidity: 45%, wind: 2 m/s (5 kts) from NNW
Estimated seismic energy released1 x 109 joules (278 kilowatt hours, equivalent to 0.239 tons of TNT) | 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.
2.810.8 kmArkansasUSGS
2.810.8 kmNew Madrid, Missouri RegionRaspberryShake
2.410 kmNew Madrid, Missouri RegionIRIS


Seismic station: Cathedral Cave, Missouri, USA (CCM/IU network) | Distance from quake: 187 km / 116 mi | Show on map | Station Info
Seismic station Cathedral Cave, Missouri, 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. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (7)

At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Mark as helpful or interesting.
Send your own user report!
Branson West Missouri / Very weak shaking (MMI II) / single vertical bump / very short : Very weak bump under my feet while sitting on the couch and leaning forward to play solitaire. My husband was on the same couch but had his feet up on the couch and didn't feel a thing.  
Biggers, AR / Light shaking (MMI IV) / very short : Windows rattled and bed moved slightly. Enough to wake me up and understand what it was. | One user found this interesting.  
Maynard Arkansas / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Heard a loud noise and the windows in the house started shaking | One user found this interesting.  
Bismarck, Arkansas (314.4 km SW of epicenter) [Map] / not felt
Dennis Jones Maynard (middebrook) arkansas 72444 / Very weak shaking (MMI II) / 2-5 s
Maynard / Light shaking (MMI IV) / rattling, vibrating : Light shaking - My bed shook and it woke me up  
Pocahontas / Very weak shaking (MMI II) / rattling, vibrating / 10-15 s

Earlier earthquakes in the same area

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