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Αδύναμος σεισμός μεγέθους 3.1 - 57 km βορειοδυτικά από Jonesboro, Craighead County, Αρκάνσας, Ηνωμένες Πολιτείες, Κυριακή, 21 Αυγ 2022 09:12 (GMT -5) -

Αδύναμος σεισμός μεγέθους 3.1 - 57 km βορειοδυτικά από Jonesboro, Craighead County, Αρκάνσας, Ηνωμένες Πολιτείες, Κυριακή, 21 Αυγ 2022 09:12 (GMT -5) Αδύναμος σεισμός μεγέθους 3.1 - 57 km βορειοδυτικά από Jonesboro, Craighead County, Αρκάνσας, Ηνωμένες Πολιτείες, Κυριακή, 21 Αυγ 2022 09:12 (GMT -5)

Αδύναμος σεισμός μεγέθους 3.1 σε βάθος 16 χλμ

21 Aug 14:19 UTC: Πρώτα να αναφέρει: VolcanoDiscovery after 7 λεπτά.
21 Aug 14:20: Now using data updates from USGS
21 Aug 15:38: Hypocenter depth recalculated from 14.8 to 16.0 km (from 9.2 to 9.9 mi). Epicenter location corrected by 1.2 km (0.7 mi) towards NW.
Update Sun, 21 Aug 2022, 14:24

Magnitude 3.1 earthquake strikes near Jonesboro, Craighead County, Arkansas, USA

3.1 quake 21 Aug 9:12 am (GMT -5)
3.1 quake 21 Aug 9:12 am (GMT -5)
A shallow magnitude 3.1 earthquake was reported in the morning near Jonesboro, Craighead County, Arkansas, USA.
According to the United States Geological Survey, the quake hit on Sunday, August 21st, 2022, at 9:12 am local time at a shallow depth of 9.2 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 3.1 earthquake as well. A third agency, the citizen-seismograph network of RaspberryShake, reported the same quake at magnitude 3.1.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ravenden (pop. 450) located 6 miles from the epicenter, Pocahontas (pop. 6,400) 14 miles away, Hoxie (pop. 2,700) 14 miles away, and Walnut Ridge (pop. 4,700) 15 miles away. In Highland (pop. 1,100, 20 miles away), Cherokee Village (pop. 4,600, 20 miles away), Ash Flat (pop. 1,100, 24 miles away), Jonesboro (pop. 73,900, 35 miles away), and Paragould (pop. 27,900, 39 miles away), the quake was probably not felt.

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Λεπτομέρειες σεισμού

Ημερομηνία και ώρα21 Aug 2022 14:12:44 UTC -
Τοπική ώρα στο επίκεντροΚυρ, 21 Αυγ 2022 09:12 (GMT -5)
StatusΕπιβεβαιωμένος
Μέγεθος3.1
Βάθος16.0 km
Επίκεντρο γεωγραφικό πλάτος / γεωγραφικό μήκος36.16867°N / 91.19883°W (Lawrence, Αρκάνσας, Ηνωμένες Πολιτείες)
Antipode36.169°S / 88.801°E
Ένταση δονήσεωνΑσθενής
Αισθητός29 αναφορές
Κύρια πηγή δεδομένωνUSGS (United States Geological Survey)
Κοντινά μέρη9 km (5 mi) ΝΑ of Ravenden (pop: 450) | Στον χάρτη | Σεισμοί κοντά
23 km (14 mi) ΝΔ of Pocahontas (Randolph County) (pop: 6,440) | Στον χάρτη | Σεισμοί κοντά
25 km (15 mi) ΒΔ of Walnut Ridge (pop: 4,670) | Στον χάρτη | Σεισμοί κοντά
32 km (20 mi) ΝΑ of Cherokee Village (pop: 4,600) | Στον χάρτη | Σεισμοί κοντά
37 km (23 mi) Α of Ash Flat (pop: 1,060) | Στον χάρτη | Σεισμοί κοντά
57 km (36 mi) ΒΔ of Jonesboro (pop: 73,900) | Στον χάρτη | Σεισμοί κοντά
64 km (40 mi) Δ of Paragould (Greene County) (pop: 27,900) | Στον χάρτη | Σεισμοί κοντά
187 km (116 mi) ΒΑ of Λιτλ Ροκ (pop: 198,000) | Στον χάρτη | Σεισμοί κοντά
Ο καιρός στο επίκεντρο την ώρα του σεισμούOvercast Clouds 21.6°C (71 F), humidity: 87%, wind: 2 m/s (4 kts) from WNW
Εκτιμώμενη εκλυόμενη σεισμική ενέργεια2.8 x 109 joules (783 kilowatt hours, ισοδυναμεί με 0.674 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
3.116 km4 Km SSW of Imboden, ArkansasUSGS
3.116 kmMissouri-Arkansas Border RegionRaspberryShake
3.412 kmARKANSASEMSC

Seismograms

Seismic station: Cathedral Cave, Missouri, USA (CCM/IU network) | Distance from quake: 210 km / 130 mi | Show on map | Station Info
Seismic station Cathedral Cave, Missouri, 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 (30)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Arkansas (6 km NE of epicenter) [Map] / Weak shaking (MMI III) : Was sitting in my house heard a loud boom and then house shook and lots of stuff rattled | 4 users found this interesting.  
Walnut Ridge, AR (24.3 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Sitting on couch, shook house,rattled windows, lasted for several seconds, also heard loud bo just as shaking began. | 2 users found this interesting.  
Conway,Arkansas (164.6 km SW of epicenter) [Map] / not felt : So many people lie, or click the wrong button without paying attention not realizing the incorrect information might interfere with scientific studies. It is ok to be honest people and just said “no, I did not feel the movements” I promise you will no | 2 users found this interesting.  
1 Glen Oak Trail Williford, Ar. (22.5 km NW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : Heard boom like thunder. Felt wave that moved me up and then down. heard windows shake. Very short duration. | One user found this interesting.  
602 Strawberry River Road Smithville, Ar (19.2 km WSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Heard it before I felt it Shook pictures, but didn’t knock off the wall Multiple animals reacted to it as well | One user found this interesting.  
Biggers Arkansas (39 km ENE of epicenter) [Map] / Very weak shaking (MMI II) : Didn’t notice any shaking but I could feel the floor under my feet rattling around, at first I thought it was the washer because I was washing pillows so I got up and checked it and it had already been done with the load. As I walked to check and see if | One user found this interesting.  
Ash Flat, Arkansas (35.9 km WNW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 1-2 s : In bed and felt a 1-2 vibration and a sound that the ground makes when it shakes. | 2 users found this interesting.  
Williford (22.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 1-2 s : We heard a loud thump & then the ground rolled from the southwest. | 2 users found this interesting.  
Jonesboro, AR (61 km ESE of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 1-2 s : Felt like something hit my foundation. | 2 users found this interesting.  
Smithville,AR (14.4 km SW of epicenter) [Map] / Weak shaking (MMI III) : At first I thought it was thunder then a loud boom and the whole house shook | 2 users found this interesting.  
McDonald's in Walnut Ridge, AR 72476 / Moderate shaking (MMI V) / vibration and rolling / very short : Sitting in my car and it felt like a duffle bag rolled off the trunk. I looked around to see if someone was rocking the car messing with me but I was alone. I said to myself "that had to be an earthquake" | One user found this interesting.  
Walnut Ridge,AR / Light shaking (MMI IV) / rattling, vibrating / very short : Laying in bed, heard a rumble. Felt a quick shook on floor that slightly rattled my door. | 2 users found this interesting.  
POCAHONTAS, AR (18.3 km NNE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : I had just woke up and felt the house shake. | One user found this interesting.  
Cherokee Village, Sharp, Arkansas (31.1 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / very short : My whole couch and walls vibrated and rumbled | One user found this interesting.  
72542 (32 km WNW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / very short : Whole house moved and shook. Windows rattling | One user found this interesting.  
Jonesboro ar (53.3 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s : Just a rumble | One user found this interesting.  
Strawberry Arkansas / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : My house is on a concrete pad. It shook the whole floor. | One user found this interesting.  
Pocahontas, AR / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Light shaking and a loud "boom" within just few seconds while inside my home. | One user found this interesting.  
Powhatan, Ar (10.5 km SSE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 10-15 s
Highland, AR (30.4 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : It woke me up and my house was rattling and popping.  
WEST PLAINS, Missouri (68.7 km NW of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s : Felt the house rumble nothing moved just the little shake of house my cats perked up and noticed too  
Batesville Ar (53.2 km SW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Very slight shaking  
jonesboro, ar (47 km ESE of epicenter) [Map] / Weak shaking (MMI III)
Walnut ridge, arkansas (25 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Ash Flat, Sharp, Arkansas (43.6 km WNW of epicenter) [Map] / Weak shaking (MMI III) / 1-2 s : In my bed watching TV, bed rocked a little  
Evening shade AR / Very weak shaking (MMI II) / 2-5 s
Williford, AR / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
Pocahontas / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Boom and vibrations  
Pocahontas / Light shaking (MMI IV) / vibration and rolling / 2-5 s
Williford, Arkansas 72482 / Weak shaking (MMI III) / single lateral shake / very short
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Earlier earthquakes in the same area

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