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Weak mag. 2.7 earthquake - 17 mi north of Huntsville, Madison County, Alabama, USA, on Saturday, Aug 13, 2022 at 5:16 am (GMT -5) -

Weak mag. 2.7 earthquake - 17 mi north of Huntsville, Madison County, Alabama, USA, on Saturday, Aug 13, 2022 at 5:16 am (GMT -5) Weak mag. 2.7 earthquake - 17 mi north of Huntsville, Madison County, Alabama, USA, on Saturday, Aug 13, 2022 at 5:16 am (GMT -5)

Weak magnitude 2.7 earthquake at 13 km depth

13 Aug 10:22 UTC: First to report: VolcanoDiscovery after 5 minutes.
13 Aug 13:30: Now using data updates from USGS
13 Aug 13:32: Magnitude recalculated from 2.6 to 2.7. Hypocenter depth recalculated from 4.7 to 13.5 km (from 2.9 to 8.4 mi). Epicenter location corrected by 1.4 km (0.9 mi) towards N.
13 Aug 13:36: Hypocenter depth recalculated from 13.5 to 13.1 km (from 8.4 to 8.1 mi).

Earthquake details

Date & timeAug 13, 2022 10:16:53 UTC -
Local time at epicenterSaturday, Aug 13, 2022 at 5:16 am (GMT -5)
Depth13.1 km
Epicenter latitude / longitude34.98017°N / 86.6185°W (Madison, Alabama, United States)
Antipode34.98°S / 93.382°E
Shaking intensityVery weak shaking
Felt5 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities7 km (4 mi) NW of Hazel Green (pop: 3,630) | Show on map | Quakes nearby
18 km (11 mi) NNW of Moores Mill (pop: 5,680) | Show on map | Quakes nearby
28 km (17 mi) N of Huntsville (pop: 190,600) | Show on map | Quakes nearby
33 km (21 mi) NNE of Madison (pop: 47,000) | Show on map | Quakes nearby
38 km (24 mi) ENE of Athens (pop: 25,000) | Show on map | Quakes nearby
53 km (33 mi) NE of Decatur (pop: 55,400) | Show on map | Quakes nearby
292 km (182 mi) N of Montgomery (pop: 200,600) | Show on map | Quakes nearby
956 km (594 mi) WSW of Washington (District of Columbia) (pop: 601,700) | Show on map | Quakes nearby
Estimated seismic energy released7.1 x 108 joules (197 kilowatt hours, equivalent to 0.169 tons of TNT) | about seismic energy
Show interactive Map
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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.
2.713 km6 Km NW of Hazel Green, AlabamaUSGS
2.713 kmAlabamaRaspberryShake


Seismic station: Waverly, Tennessee, USA (WVT/IU network) | Distance from quake: 168 km / 105 mi | Show on map | Station Info
Seismic station Waverly, Tennessee, 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 (9)

At magnitude 2.7, 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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Send your own user report!
Harvest / Light shaking (MMI IV) / single lateral shake / 2-5 s : A big shake and vibration. Baby monitor picked up motion | 4 users found this interesting.  
Huntsville, AL (27.7 km S of epicenter) [Map] / not felt
Biblehill Decatur county TN (160.6 km WNW of epicenter) [Map] / not felt
Hazel Green, AL (3.8 km SE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short : loud boom, followed by widows rattle  
Meridianville, AL (14 km SSE of epicenter) [Map] / Very weak shaking (MMI II) : Laying in bed, very loud, felt the house shaking a little  
Vinemont Al. Standing at the side window . I felt / Light shaking (MMI IV) / single lateral shake / 10-15 s : Listed above  
Murfreesboro,Tn / not felt : Felt more so dizziness like the room was moving as I was getting ready for work.  
Winchester, TN / not felt
Fayetteville, Tn / Very weak shaking (MMI II) / rattling, vibrating : Rolling thunder sound and house popped  

Earlier earthquakes in the same area

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