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Moderate mag. 4.2 earthquake - 18 mi north of Eugene, Lane County, Oregon, USA, on Monday, Dec 20, 2021 at 12:11 pm (GMT -8) -

Moderate mag. 4.2 earthquake - 18 mi north of Eugene, Lane County, Oregon, USA, on Monday, Dec 20, 2021 at 12:11 pm (GMT -8) Moderate mag. 4.2 earthquake - 18 mi north of Eugene, Lane County, Oregon, USA, on Monday, Dec 20, 2021 at 12:11 pm (GMT -8)

Moderate magnitude 4.2 earthquake at 5 km depth

20 Dec 20:16 UTC: First to report: RaspberryShake after 5 minutes.

Earthquake details

Date & timeDec 20, 2021 20:11:21 UTC -
Local time at epicenterMonday, Dec 20, 2021 at 12:11 pm (GMT -8)
StatusConfirmed
Magnitude4.2
Depth5.4 km
Epicenter latitude / longitude44.30623°N / 123.04722°W (Linn, Oregon, United States)
Antipode44.306°S / 56.953°E
Shaking intensityLight shaking
Felt6 reports
Primary data sourceRaspberryShake (RaspberryShake)
Nearest volcanoSand Mountain (89 km / 55 mi)
Nearby towns and cities10 km (6 mi) ENE of Harrisburg (pop: 3,700) | Show on map | Quakes nearby
27 km (17 mi) WSW of Sweet Home (Linn County) (pop: 9,270) | Show on map | Quakes nearby
28 km (17 mi) SSW of Lebanon (pop: 16,300) | Show on map | Quakes nearby
28 km (18 mi) N of Eugene (pop: 163,500) | Show on map | Quakes nearby
29 km (18 mi) N of Springfield (pop: 60,900) | Show on map | Quakes nearby
33 km (21 mi) SSE of Corvallis (pop: 55,800) | Show on map | Quakes nearby
37 km (23 mi) S of Albany (pop: 52,200) | Show on map | Quakes nearby
69 km (43 mi) S of Four Corners (pop: 15,900) | Show on map | Quakes nearby
71 km (44 mi) S of Salem (Oregon) (pop: 164,500) | Show on map | Quakes nearby
139 km (86 mi) SSW of Portland (pop: 632,300) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 7.5°C (46 F), humidity: 96%, wind: 0 m/s (1 kts) from NE
Estimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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.
Mag.DepthLocationSource
4.25.4 kmOregonRaspberryShake

User reports for this quake (13)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Bandon (169.9 km SW of epicenter) [Map] / not felt : Didn’t feel it, family members in gold beach did. We received a call from them asking if we were ok or felt it. We did not feel it. Other family members in cottage grove sent pictures of buildings with broken windows from the earth quake. It’s has bee | One user found this interesting.  
salem oregon / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : my bed was slightly vibrating and the object on my dresser started vibrating. at first i thought maybe it was a train near my house or a truck driving by but this lasted at least 10 seconds and i started to wonder if it was an earthquake i was experiencin  
At home sitting. / not felt : I was at home sitting, as close as I am to it I should have felt it at 4.2. I think this is another "phantom quake" (reported through our app)  
Grants Pass Oregon / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : I was in the upstairs at work in the lunch room it felt like a forklift hit a beam the it was a side to side roll i was facing north.  
Junction City, Lane, Oregon (17.5 km SW of epicenter) [Map] / not felt (reported through our app)
Salem Oregon off of state st / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s (reported through our app)
Portland / not felt (reported through our app)
Pistol River / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Southern Lake County, Oregon / not felt : Quake not felt. (reported through our app)  
merlin, or / Light shaking (MMI IV) / vibration and rolling / 2-5 s : Had a little weak jolt before the rumbling roll came through  
tualatin, or / not felt (reported through our app)
Eureka / Very weak shaking (MMI II) / single lateral shake / 1-2 s : Just felt a little wiggle. Like the 6.2 started. (reported through our app)  
Seattle WA us / not felt (reported through our app)
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