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Moderate mag. 4.4 earthquake - 10.8 mi southeast of Volcano Village, Hawaii County, USA, on Sunday, Dec 20, 2020 at 10:36 pm (GMT -10)

Moderate mag. 4.4 earthquake - 10.8 mi southeast of Volcano Village, Hawaii County, USA, on Sunday, Dec 20, 2020 at 10:36 pm (GMT -10) Moderate mag. 4.4 earthquake - 10.8 mi southeast of Volcano Village, Hawaii County, USA, on Sunday, Dec 20, 2020 at 10:36 pm (GMT -10)

Moderate magnitude 4.4 earthquake at 6 km depth

21 Dec 08:42 UTC: First to report: USGS after 6 minutes.
21 Dec 08:50: Magnitude recalculated from 4.3 to 4.4. Hypocenter depth recalculated from 5.7 to 5.6 km (from 3.5 to 3.5 mi).
... [show all] ...
21 Dec 10:34: Hypocenter depth recalculated from 6.4 to 6.3 km (from 4 to 3.9 mi).
Update Mon, 21 Dec 2020, 08:48

Light magnitude 4.3 quake hits 11 miles southeast of Volcano Village, Hawaii, United States late at night

4.3 quake 20 Dec 10:36 pm (GMT -10)
4.3 quake 20 Dec 10:36 pm (GMT -10)
An earthquake of magnitude 4.3 occurred only 12 minutes ago 11 miles southeast of Volcano Village, Hawaii, United States, the United States Geological Survey (USGS) reported.
The quake hit at a very shallow depth of 3.5 miles beneath the epicenter near Volcano Village, Hawaii County, Hawaii, USA, late at night on Sunday 20 December 2020 at 10:36 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake as well.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Fern Forest (pop. 930) located 9 miles from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Eden Roc (pop. 940) located 10 miles from the epicenter, Volcano Village (pop. 2,600) 11 miles away, Fern Acres (pop. 1,500) 12 miles away, Mountain View (pop. 3,900) 15 miles away, Leilani Estates (pop. 1,600) 15 miles away, Hawaiian Paradise Park (pop. 11,400) 20 miles away, and Hilo (pop. 43,300) 27 miles away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & timeDec 21, 2020 08:36:27 UTC
Local time at epicenterSunday, Dec 20, 2020 at 10:36 pm (GMT -10)
StatusConfirmed
Magnitude4.4
Depth6.3 km
Epicenter latitude / longitude19.337°N / 155.11183°W (Hawaii, Hawaii, United States)
Antipode19.337°S / 24.888°E
Shaking intensityLight shaking
Felt41 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoKilauea (20 km / 12 mi)
Nearby towns and cities15 km (9 mi) S of Fern Forest (pop: 931) | Show on map | Quakes nearby
17 km (11 mi) SE of Volcano Village (pop: 2,580) | Show on map | Quakes nearby
24 km (15 mi) S of Mountain View (pop: 3,920) | Show on map | Quakes nearby
28 km (18 mi) SW of Nanawale Estates (pop: 1,430) | Show on map | Quakes nearby
32 km (20 mi) SSW of Hawaiian Paradise Park (Hawaii County) (pop: 11,400) | Show on map | Quakes nearby
41 km (26 mi) ENE of Pāhala (pop: 1,360) | Show on map | Quakes nearby
44 km (27 mi) S of Hilo (pop: 43,300) | Show on map | Quakes nearby
55 km (34 mi) S of Pepeekeo (pop: 1,790) | Show on map | Quakes nearby
99 km (61 mi) ESE of Kailua-Kona (Hawaii County) (pop: 12,000) | Show on map | Quakes nearby
361 km (224 mi) SE of Honolulu (pop: 371,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeHeavy Intensity Rain 20.3°C (68 F), humidity: 88%, wind: 2 m/s (3 kts)
Estimated seismic energy released2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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
4.46.3 km14 Km S of Fern Forest, Hawaii, USAUSGS
4.59 kmISLAND OF HAWAII, HAWAII, USAEMSC

Seismograms

Seismic station: Pohakuloa, Hawaii, USA (POHA/IU network) | Distance from quake: 64 km / 40 mi | Show on map | Station Info
Seismic station Pohakuloa, Hawaii, 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 (41)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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mountain View (22.2 km N of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 2-5 s : The house was totally still, no animal movement, just lying down in bed. A rumble and constant small shaking and rolling. First lasted 2 or 3 seconds, then there was a final shake 1 second. | 3 users found this interesting. (reported through our app)  
Hilo, Hawaii, Hawaii (42.6 km N of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s : Strong enough to rattle double hung windows and creaking of walls and ceiling | 5 users found this interesting. (reported through our app)  
HPP park / Moderate shaking (MMI V) / rattling, vibrating / 10-15 s : I was watching t,v, my chair moved back words, the house shook , a boom, then the shaking. | 4 users found this interesting.  
Pepeekeo, Hawaii, Hawaii (58.3 km N of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s : I was lying in bed and felt the shaking, t made me jump out of bed. | 2 users found this interesting.  
Pahoa, HI (25.5 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Like a train passing near the window, woken up upstairs | 2 users found this interesting.  
Volcano Village, Hawaii, Hawaii (20 km WNW of epicenter) [Map] / Very weak shaking (MMI II) : Was prepping coffee pot, it slid off the counter like I was being slightly tilted up. Staying at KMC military camp  
hilo, hi / Light shaking (MMI IV) / single lateral shake / 2-5 s : quick tremor shook bed, balanced objects did not fall. | 2 users found this interesting.  
Pahoa /Aina loa / Weak shaking (MMI III) / single lateral shake / 1-2 s : My bed shook and closet doors rattled | 2 users found this interesting.  
Fern acres / Light shaking (MMI IV) / horizontal (sideways) swinging : Sideways in line from south rolling north felt for 10 seconds | 2 users found this interesting.  
545 Leilani St, Hilo (41.7 km N of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s : I was lying on my bed and felt the ground and my bed shake for a few seconds, maybe 3? | One user found this interesting.  
Kalapana Hawaii / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s : Whole house shook and rumbled, windows rattled | One user found this interesting.  
Hilo / Light shaking (MMI IV) / 2-5 s : While sitting in bed, bed vibrated back and forth 4 times. | One user found this interesting.  
Hawaiian Acres Kurtistown / Light shaking (MMI IV) / single vertical bump / 1-2 s : Quick shake woke me up | One user found this interesting.  
Hawaiian paradise park (28.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s
Honolulu (361.7 km NW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short (reported through our app)
Hilo, Hawaii, Hawaii (38.1 km N of epicenter) [Map] / Very weak shaking (MMI II) / very short
Shake and roll Nanawale (26.7 km NE of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 5-10 s
Kurtistown (27 km N of epicenter) [Map] / Light shaking (MMI IV) / 1-2 s
Hilo (39.9 km N of epicenter) [Map] / Light shaking (MMI IV)
Leilani Estates (23.5 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s
Orchidlands Estates, Hawaii, Hawaii (28.8 km NNE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Fern Acres, Hawaii, Hawaii (12.7 km N of epicenter) [Map] / Moderate shaking (MMI V) / 2-5 s (reported through our app)
Orchidlands Estates, Hawaii, Hawaii (29 km NNE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Hawaian paradise park / Weak shaking (MMI III) / vibration and rolling : Felt and saw the dining table roll. Very short time.  
Kihei / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : While lying in bed, on the fifth floor, felt slight bouncing.  
Kihei / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : While lying in bed, on the fifth floor, felt slight bouncing.  
Hilo, Hawaii / Very weak shaking (MMI II)
Hawaiian Paradise Park, Keaau / Moderate shaking (MMI V) / horizontal (sideways) swinging : Lasted several seconds. Initial light shaking followed by stronger shaking for about 3-5 seconds.  
Keaau / Light shaking (MMI IV) / 1-2 s
Kihei / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : While lying in bed, on the fifth floor, felt slight bouncing.  
Miloli’i, HI / Very weak shaking (MMI II) / rattling, vibrating / 15-20 s
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