Moderate mag. 4.1 earthquake - 28 mi south of Hilo, Hawaii County, USA, on Sunday, 14 Mar 2021 8:59 pm (GMT -10) -
Moderate magnitude 4.1 earthquake at 7 km depth
15 Mar 07:03 UTC: First to report: USGS after 4 minutes.
15 Mar 07:05: Magnitude recalculated from 3.6 to 3.7.
15 Mar 08:02: Hypocenter depth recalculated from 7.2 to 7.0 km (from 4.5 to 4.3 mi).
Update Mon, 15 Mar 2021, 07:09Small tremor of magnitude 3.7 just reported 28 miles southwest of Hilo, Hawaii, United States
3.7 quake 14 Mar 8:59 pm (GMT -10)
A very shallow magnitude 3.7 earthquake was reported in the evening near Hilo, Hawaii County, Hawaii, USA.
According to the United States Geological Survey, the quake hit on Sunday 14 March 2021 at 8:59 pm local time at a very shallow depth of 0.5 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 3.7 earthquake as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Volcano Village (pop. 2,600) located 7 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Fern Acres (pop. 1,500) located 15 miles from the epicenter, Mountain View (pop. 3,900) 16 miles away, Ainaloa (pop. 3,000) 19 miles away, Orchidlands Estates (pop. 2,800) 20 miles away, Hawaiian Paradise Park (pop. 11,400) 23 miles away, Hawaiian Beaches (pop. 4,300) 24 miles away, and Hilo (pop. 43,300) 28 miles away.
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Date & time: 15 Mar 2021 06:59:41 UTC -
Local time at epicenter:
Sunday, 14 Mar 2021 8:59 pm (GMT -10)
Depth: 7.0 km
Epicenter latitude / longitude: 19.3325°N / 155.20217°W
, United States
Nearest volcano: Kilauea
(12 km / 7 mi)
Nearby towns and cities:13 km (8 mi) SSE of Volcano Village
(pop: 2,580) --> See nearby quakes!27 km (17 mi) SSW of Mountain View
(pop: 3,920) --> See nearby quakes!32 km (20 mi) ENE of Pāhala
(pop: 1,360) --> See nearby quakes!36 km (22 mi) WSW of Nanawale Estates
(pop: 1,430) --> See nearby quakes!38 km (23 mi) SW of Hawaiian Paradise Park (Hawaii County)
(pop: 11,400) --> See nearby quakes!46 km (28 mi) SSW of Hilo
(pop: 43,300) --> See nearby quakes!57 km (35 mi) S of Pepeekeo
(pop: 1,790) --> See nearby quakes!66 km (41 mi) ENE of Hawaiian Ocean View
(pop: 4,440) --> See nearby quakes!341 km (212 mi) SE of East Honolulu
(pop: 49,900) --> See nearby quakes!354 km (220 mi) SE of Honolulu
(pop: 371,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 19.6°C
(67 F), humidity: 88%, wind: 2 m/s (4 kts) from SE
Primary data source: USGS
(United States Geological Survey)
Estimated released energy: 8.9 x 1010
joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) More info
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.
|4.1||7 km||12 Km SSE of Volcano, Hawaii, USA||USGS|
|4.1||11 km||ISLAND OF HAWAII, HAWAII, USA||EMSC|
User reports for this quake (13)
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45.8 km NNE of epicenter [Map]
/ Very weak shaking (MMI II) / 2-5 s : Just felt shaking | 2 users found this interesting. (reported through our app)
Holualoa, HI / Very weak shaking (MMI II) / very short : Couch shook | One user found this interesting.
Ainaloa (28 km NE of epicenter) [Map] / Weak shaking (MMI III) / vertical swinging (up and down) / very short : Dizzy, motion sickness feeling, light headed,
82.3 km WNW of epicenter [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 5-10 s
Kailua Kona (84.4 km WNW of epicenter) [Map] / Very weak shaking (MMI II)
12.5 km NW of epicenter [Map] / Very weak shaking (MMI II) / 5-10 s
Captain Cook (72.8 km W of epicenter) [Map]
/ Weak shaking (MMI III) / 1-2 s (reported through our app)
kealakekua (78.9 km WNW of epicenter) [Map] / Light shaking (MMI IV)
East 6th dead end in HPP / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Would be nice if you had a link of the lava tubes mapped in HPP. THANK YOU
Hilo / Light shaking (MMI IV)
Hakalau / Light shaking (MMI IV)
Hilo / Light shaking (MMI IV) / 2-5 s
Captain Cook / Weak shaking (MMI III)
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