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Event status: unconfirmed [?]

Reported quake or seismic-like event: 25 mi south of Lansing, Ingham County, Michigan, USA, Tuesday, Sep 21, 2021 at 12:10 pm (GMT -4) -

Reported quake or seismic-like event: 25 mi south of Lansing, Ingham County, Michigan, USA, Tuesday, Sep 21, 2021 at 12:10 pm (GMT -4) Reported quake or seismic-like event: 25 mi south of Lansing, Ingham County, Michigan, USA, Tuesday, Sep 21, 2021 at 12:10 pm (GMT -4)
21 Sep 16:23 UTC: First to report: VolcanoDiscovery after 13 minutes.

Earthquake details

Date & timeSep 21, 2021 16:10:35 UTC -
Local time at epicenterTuesday, Sep 21, 2021 at 12:10 pm (GMT -4)
Statusunconfirmed
Magnitudeunknown (3.8?)
Depth50.0 km
Epicenter latitude / longitude42.37318°N / 84.63071°W (Jackson, Michigan, United States)
Antipode42.373°S / 95.369°E
Shaking intensityVery weak shaking
Felt424 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities6 km (3 mi) E of Springport (pop: 790) | Show on map | Quakes nearby
18 km (11 mi) NE of Albion (pop: 8,230) | Show on map | Quakes nearby
24 km (15 mi) NW of Jackson (pop: 33,100) | Show on map | Quakes nearby
40 km (25 mi) S of Lansing (pop: 115,100) | Show on map | Quakes nearby
42 km (26 mi) SSW of East Lansing (pop: 48,500) | Show on map | Quakes nearby
45 km (28 mi) E of Battle Creek (pop: 51,600) | Show on map | Quakes nearby
74 km (46 mi) W of Ann Arbor (pop: 117,100) | Show on map | Quakes nearby
79 km (49 mi) E of Kalamazoo (pop: 76,000) | Show on map | Quakes nearby
119 km (74 mi) NW of Toledo (Ohio) (pop: 279,800) | Show on map | Quakes nearby
748 km (465 mi) WNW of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 22.2°C (72 F), humidity: 84%, wind: 5 m/s (10 kts) from SSW
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Seismograms

Seismic station: Ann Arbor, Michigan, USA (AAM/US network) | Distance from quake: 80 km / 50 mi | Show on map | Station Info
Seismic station Ann Arbor, Michigan, 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 (600)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Pinckney, MI (56.5 km E of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short
Rives Junction / not felt / 1-2 s : It sounded like a huge explosion and expected to see a mushroom cloud. Felt a shock wave from it but not shaking  
Jackson Michigan / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Parma, MI. / Very weak shaking (MMI II) / rattling, vibrating / very short : A quick shake of the house. Like something large fell.  
Lansing Michigan (36.6 km N of epicenter) [Map] / not felt
Eckford / not felt : Heard an audible boom. Did not sound like thunder or an explosion.  
5061 Pine Dr. Jackson, MI 49201 (28.5 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : Loud boom in the distance to the northwest of my location  
Jackson / not felt
Albion / not felt : live next to kazoo river didntfeel anything  
Jackson Mi / not felt : A loud BOOM! Almost like a bowling ball dropping on the floor inside of the house. ((My husband and I were both outside cleaning out the garage when it happened))  
Brighton MI / Weak shaking (MMI III) / 2-5 s : Loud bang like something crashed into the house and the house shook for a few seconds after  
Fowlerville Michigan (53.5 km NE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Heard a boom and also shook my house  
2010 Pringle Ave / Very weak shaking (MMI II) / 1-2 s
Jackson, MI (16.7 km SE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s
Parma, mi / Very weak shaking (MMI II) / 2-5 s : Loud echoing boom  
Pleasant Lake / Very weak shaking (MMI II) / 2-5 s
Marshall, mi / Very weak shaking (MMI II) / single vertical bump / very short : Just a loud boom  
Rives Junction / not felt : Heard the boom!  
East side Jackson / not felt
Pleasant Lake, Michigan / Light shaking (MMI IV) / single lateral shake / 20-30 s : Windows rattled loud boom And I thought something hit the house  
Stockbridge / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s : Something heavy falling on the house.  
Jackson / Very weak shaking (MMI II) / single vertical bump / very short
48819 (34 km ENE of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / very short : it felt more like an explosion/blast than an earthquake  
Jackson, MI / not felt
Jackson Mi / Very weak shaking (MMI II) / very short : Heard it. Sounded like an explosion  
Waterloo Township / not felt : Loud boom!  
He’ll Michigan / not felt : Saw reports but didn’t feel anything  
Leslie / Light shaking (MMI IV) / 2-5 s : It felt as if someone ran into my house with a dump truck and sounded like it as well.  
Jackson, mi / not felt : I was at the bank in drive thru a little after noon and my window was down and I heard a loud boom sound. I first thought it was thunder and I looked up into the sky and saw nothing.. then I thought it was a car hitting the bank building and I looked into  
Jackson / not felt
Vandercook Michigan / not felt : We were sitting outside when we heard it. It was a loud boom then sounded like ever lasting thunder. Crazy!  
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