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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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Jackson, Michigan (18 km ESE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Very loud boom lasted a second or 2 shook house and windows. Like an explosion. | 17 users found this interesting.  
East Leroy michigan (50 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / complex motion difficult to describe / 2-5 s : Not 100% sure it was an earthquake but I've been in earthquakes before out west and in Anchorage so I'm familiar with them. It felt an awful lot like that although I've never felt one in Michigan. Lasted maybe 3 seconds, very weak. Others heard and felt i | 7 users found this interesting.  
Marshall, MI (29 km WSW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / very short : Explosion like noise, followed by concussion feel against the building. Thought it was construction explosion or event on I-94. | 5 users found this interesting.  
Marshall, Michigan (38.9 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : There was 2 booms. The first I thought was thunder, it got my attention. The second boom was right after and MUCH louder with shaking. My daughter and I both felt and heard it. The second boom lasted longer than the first. | 5 users found this interesting.  
Marshall MI / Very weak shaking (MMI II) / single lateral shake / very short : I heard two loud bangs and it made my curtains pulse. A quick shake. | 7 users found this interesting.  
Gregory, / Moderate shaking (MMI V) / single vertical bump / very short : Very loud boom at about 12:03 PM Seemed more intense than a sonic boom from a passing jet. It shook the house. Checked lightning tracking sites with none reported in area. Wonder if it may have been caused by a meteorite. | 5 users found this interesting.  
  • I agree possible meteorite, LOUD booms and several reports of "felt like something hit the roof".
Pinckney MI (78.8 km E of epicenter) [Map] / Weak shaking (MMI III) / 1-2 s : Heard a loud boom like a explosion. | 5 users found this interesting.  
3659 Haynes rd Leslie, mi / Weak shaking (MMI III) / single vertical bump / very short : At 12:03pm, a cannon boom sound went off. It shook the house and the dogs were scared. It happened and was over fast. | 4 users found this interesting.  
Blackman, mi (16.5 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Heard a loud boom and some light shaking. As if some heavy equipment broke and dropped a heavy load directly in front of my house. | 3 users found this interesting.  
near Olivet, Eaton, Michigan (12.2 km W of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 1-2 s : Shook my house to the point that I thought a tree fell on it. | 4 users found this interesting.  
Springport mi (4.5 km W of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short : Sleeping, woke me up with a boom and my cat on my face, and the house shivered. | 4 users found this interesting.  
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 | 3 users found this interesting.  
Leslie, MI (18.5 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Didn’t so much feel the ground shake, but heard and felt two large booms one right after the other. Seemed like explosions. | 2 users found this interesting.  
East Leroy, MI (54.4 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / 1-2 s : Two LOUD BOOMS, I swear the house was vibrating. I was sitting by an open window but yet the noise sounded like it was coming from my basement. | 2 users found this interesting.  
Battle Creek Michigan / not felt : I heard a large boom and looked outside. Thought for sure it was thunder. | 4 users found this interesting.  
near Albion, Calhoun, Michigan (4.8 km SE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s : 2 fairly loud explosion like booms in rapid succession. Windows rattled. Seemed to come from the northwest of our house. Noticable enough for us to look outside for smoke and emergency vehicles. | One user found this interesting.  
ALBION (13.7 km SSW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / very short : Heard loud boom and whole house shook went outside to find all my neighbors outside making comments like ohh felt like someone hit the house, earthquake, thought someone fell out of bed and so on. Would love to find out the facts | One user found this interesting.  
Marshall, MI (29 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : Felt like something fell on the house, had to check the roof to see if something did. More sound felt than physical shaking. | One user found this interesting.  
Parma / Very weak shaking (MMI II) / 1-2 s : Heard explosion and house shook slightly | 3 users found this interesting.  
Marshall Michigan Downtown (29.5 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : Yes...mainly heard the 2 loud booms. | 2 users found this interesting.  
48169 / not felt / 1-2 s : I was in the basement of my house and thought it was thunder or someone in a large truck in my driveway or possibly an accident in the street in front of my house. . I immediately went upstairs to see what was going on. | One user found this interesting.  
Marshall, MI / Very weak shaking (MMI II) / complex motion difficult to describe / 2-5 s : Sounded like something fell on the house. My son and I both ran outside to see if something fell. Checked all of the rooms, basement, and garage to see if something fell or collapsed. | One user found this interesting.  
49068 / not felt : I heard a very loud what sounded like explosion. Thought it was a major accident on i94 east,just east of Marshall. | One user found this interesting.  
Marshall,MI / Very weak shaking (MMI II) : I thought it was like an accident or trucks going over bumps or an explosion like at a home or the Tenneco factory. | One user found this interesting.  
Marshall, mi / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Felt more like blast/tree hitting house than earthquake. Quick boom and widows rattle over within 6 seconds. Given direction/distance, made me think gas bubble near solid waste facility | One user found this interesting.  
Bunkerhill township, leslie, michigan (28.9 km ENE of epicenter) [Map] / not felt : Heard 2 loud explosion noises one right after other. Like boom noise of sonic boom quality. Caused minor window shaking and felt the shock in body from the sound waves. Didn't notice ground movement as was noticing noise and shock wave.  
575 Ewers Rd, Leslie, MI (28.2 km ENE of epicenter) [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s : Felt floors and house shake along with a huge boom like a tree fell on top of house. No trees fell and no rain or thunder.  
575 Ewers Rd, Leslie, MI (28.2 km ENE of epicenter) [Map] / Light shaking (MMI IV) / single vertical bump / 1-2 s : Felt floors and house shake along with a huge boom like a tree fell on top of house. No trees fell and no rain or thunder.  
Pinckney Michigan (59.1 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Basically a very big boom that made the house and windows rattle. I lived with earthquakes in alaska for over 20 years so didn’t really think much about it. Thought someone was playing with explosives.  
Shelby Twp mi (135.5 km ENE of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s : I felt a noticeable shaking that lasted about 2-3 seconds almost like a vibrating or vertical movement.  
Wyoming, Mi (105.8 km NW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s : The floor of the bank I was in shook for a few seconds… both I and the guy next to me felt it, and wondered if something had hit the building.  
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