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Αδύναμος σεισμός μεγέθους 2.9 - 30 km νότια από Benton, Saline County, Αρκάνσας, Ηνωμένες Πολιτείες, Πέμπτη, 18 Νοε 2021 12:01 (GMT -6) -

Αδύναμος σεισμός μεγέθους 2.9 - 30 km νότια από Benton, Saline County, Αρκάνσας, Ηνωμένες Πολιτείες, Πέμπτη, 18 Νοε 2021 12:01 (GMT -6) Αδύναμος σεισμός μεγέθους 2.9 - 30 km νότια από Benton, Saline County, Αρκάνσας, Ηνωμένες Πολιτείες, Πέμπτη, 18 Νοε 2021 12:01 (GMT -6)

Αδύναμος σεισμός μεγέθους 2.9 σε βάθος 8.9 χλμ

18 Nov 18:07 UTC: Πρώτα να αναφέρει: USGS after 7 λεπτά.
18 Nov 18:38: Hypocenter depth recalculated from 9.2 to 9.4 km (from 5.7 to 5.8 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards SW.
18 Nov 18:46: Magnitude recalculated from 2.8 to 2.9. Hypocenter depth recalculated from 9.4 to 8.9 km (from 5.8 to 5.5 mi).

Λεπτομέρειες σεισμού

Ημερομηνία και ώρα18 Nov 2021 18:01:01 UTC -
Τοπική ώρα στο επίκεντροΠέμ, 18 Νοε 2021 12:01 (GMT -6)
StatusΕπιβεβαιωμένος
Μέγεθος2.9
Βάθος8.9 km
Επίκεντρο γεωγραφικό πλάτος / γεωγραφικό μήκος34.29083°N / 92.582°W (Grant, Αρκάνσας, Ηνωμένες Πολιτείες)
Antipode34.291°S / 87.418°E
Ένταση δονήσεωνΑσθενής
Αισθητός12 αναφορές
Κύρια πηγή δεδομένωνUSGS (United States Geological Survey)
Κοντινά μέρη4 km (2 mi) ΝΔ of Prattsville (pop: 306) | Στον χάρτη | Σεισμοί κοντά
17 km (10 mi) Δ of Sheridan (pop: 4,810) | Στον χάρτη | Σεισμοί κοντά
23 km (14 mi) ΝΑ of Malvern (pop: 10,900) | Στον χάρτη | Σεισμοί κοντά
30 km (19 mi) Ν of Benton (Saline County) (pop: 34,200) | Στον χάρτη | Σεισμοί κοντά
35 km (22 mi) ΝΔ of Bryant (pop: 20,000) | Στον χάρτη | Σεισμοί κοντά
49 km (31 mi) ΝΑ of Hot Springs (pop: 35,600) | Στον χάρτη | Σεισμοί κοντά
52 km (32 mi) ΝΑ of Hot Springs National Park (pop: 35,200) | Στον χάρτη | Σεισμοί κοντά
54 km (33 mi) Δ of Pine Bluff (pop: 44,800) | Στον χάρτη | Σεισμοί κοντά
57 km (36 mi) ΝΔ of Λιτλ Ροκ (pop: 198,000) | Στον χάρτη | Σεισμοί κοντά
61 km (38 mi) ΝΔ of North Little Rock (pop: 66,500) | Στον χάρτη | Σεισμοί κοντά
Ο καιρός στο επίκεντρο την ώρα του σεισμούOvercast Clouds 13°C (55 F), humidity: 27%, wind: 5 m/s (10 kts) from NNE
Εκτιμώμενη εκλυόμενη σεισμική ενέργεια1.4 x 109 joules (392 kilowatt hours, ισοδυναμεί με 0.338 τόνους TNT) | about seismic energy
Διαδραστικός χάρτης
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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.ΒάθοςΤοποθεσίαΠηγή
2.98.9 km3 Km SW of Prattsville, ArkansasUSGS
3.18 kmARKANSASEMSC

Seismograms

Seismic station: Mount Ida, Arkansas, USA (MIAR/US network) | Distance from quake: 96 km / 59 mi | Show on map | Station Info
Seismic station Mount Ida, Arkansas, 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. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
Δείτε περισσότερα

User reports for this quake (14)

At magnitude 2.9, 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.
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Prattsville / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Loud noise and rumbling woke me up from a nap and things in the house were rattling. Went outside to see if there was a car wreck or maybe a tree had fallen. Very loud. | One user found this interesting.  
Bradford Arjansad (179.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : I hear I heard a thunder swell up and then a really loud bolt of lightning strike. Like the lightning strikes get right in my front yard it was so loud. There was no lightning before that or after it.  
212 Country Club Rd, Malvern (16.5 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Sounded like explosion near us, house, windows, floors shook and rattled | One user found this interesting.  
873 Grant 45, Prattsville, Ar / Very weak shaking (MMI II) / single lateral shake / very short : The warning siren test was sounding, then the house shook and heard a sound like an explosion. | One user found this interesting.  
Prattsville / Weak shaking (MMI III) / very short : It was a quick shake and like a boom, almost like someone hit the building I was in | One user found this interesting.  
Judsonia (139.9 km NE of epicenter) [Map] / not felt
Home at Traskwood, Ar. (Benton, Ar) (17.1 km SSE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating : I was asleep, at noon, I heard a noise, I heard my ceiling fan rocking. This woke me  
near Malvern, Hot Spring, Arkansas (5.1 km NW of epicenter) [Map] / Light shaking (MMI IV) / both vertical and horizontal swinging / 2-5 s : Felt like an explosion next door to us.  
near Seridyana, Grant, Arkansas (17.7 km ESE of epicenter) [Map] / Very weak shaking (MMI II)
Poyen AR / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : I was at my school. And it moved everything thing in the classroom and scared me  
8724 Melett lane Benton, at 72015 / not felt / complex motion difficult to describe / 5-10 s
Malvern Arkansas / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Small shake  
Prattsville / Very weak shaking (MMI II) / single lateral shake / 2-5 s : Just felt house shake  
Poyen, Arkansas / Light shaking (MMI IV) / rattling, vibrating / 2-5 s

Earlier earthquakes in the same area

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