Terremoto forte mag. 5.5 - 54 km a sud ovest da Bojnourd, North Khorasan, Iran, lunedì, 17 maggio 2021 -

Terremoto forte mag. 5.5 - 54 km a sud ovest da Bojnourd, North Khorasan, Iran, lunedì, 17 maggio 2021

Terremoto forte magnitudine 5.5 at 10 km depth

17 May 01:00 UTC: Primo a segnalare: GFZ dopo 6 minuti.
17 May 01:00: Magnitudine ricalcolata da 5.2 a 5.3. Posizione dell'epicentro corretta di 3.5 km (2.1 mi) al SSW.
17 May 05:36: Magnitudine ricalcolata da 5.3 a 5.5. Posizione dell'epicentro corretta di 19 km (12 mi) al S.
Update Mon, 17 May 2021, 01:06
Significant 5.3 quake hits near Bojnourd, North Khorasan, Iran
5.3 quake 17 May 5:24 am (GMT +4:30)
5.3 quake 17 May 5:24 am (GMT +4:30)
An earthquake of magnitude 5.3 occurred only 12 minutes ago 47 km west of Bojnourd, Iran, the German Research Centre for Geosciences (GFZ) reported.
The quake hit at a shallow depth of 10 km beneath the epicenter near Bojnourd, North Khorasan, Iran, early morning on Monday 17 May 2021 at 4:54 am 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 5.5 earthquake. A third agency, France's Réseau National de Surveillance Sismique (RéNaSS), reported the same quake at magnitude 5.5.
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 Bojnourd (pop. 192,000) located 47 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Esfarāyen (pop. 59,700) located 76 km from the epicenter, Shīrvān (pop. 82,800) 100 km away, and Kalāleh (pop. 33,700) 116 km 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 data:

Data & ora: 17 May 2021 00:54:01 UTC -
Ora locale a epicentro: 17 May 5:24 am (GMT +4:30)
Magnitudine: 5.5
Profondità: 10.0 km
Epicentro latitudine / longitudine: 37.29°N / 56.76°E (North Khorasan, Iran)
Nearby towns and cities:
54 km OSO da Bojnourd (pop: 192,000) --> Vedi sismi vicini
71 km ONO da Esfarāyen (pop: 59,700) --> Vedi sismi vicini
104 km O da Shīrvān (pop: 82,800) --> Vedi sismi vicini
112 km E da Kalāleh (Kalaleh, Golestan) (pop: 33,700) --> Vedi sismi vicini
141 km E da Gonbad-e Kāvūs (Golestan) (pop: 131,400) --> Vedi sismi vicini
143 km E da Āzādshahr (Golestan) (pop: 47,600) --> Vedi sismi vicini
145 km NO da Sabzevar (Razavi Khorasan) (pop: 226,200) --> Vedi sismi vicini
161 km OSO da Aşgabat (Ashgabat, Turkmenistan) (pop: 727,700) --> Vedi sismi vicini
276 km ONO da Mashhad (Razavi Khorasan) (pop: 2,307,200) --> Vedi sismi vicini
509 km ENE da Teheran (Tehrān) (pop: 7,153,300) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky 11°C (52 F), humidity: 50%, wind: 1 m/s (2 kts)
Fonte dati primaria: GFZ (German Research Centre for Geosciences)
Stima dell'energia sismica liberata: 1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 atomic bombs!) More info
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If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
5.510 kmNorthern And Central IranGFZ
unknownn/aNear Gorgan, Golestan, IranVolcanoDiscovery
5.410 kmIran: Near AshgabatRENASS
5.410 kmIran: 17 Km of Sankhast, North KhorasanIRSC
5.210 kmIran: 伊朗CEIC
5.410 km55 Km WSW of Bojnūrd, IranUSGS
5.510 kmNorthern And Central IranBMKG
5.729 kmNorthern And Central IranGeoAu
5.74 kmIran: Western AsiaKNDC
5.610 kmIran: 147km WSW of Ashgabat, TurkmenistanNCS

User reports for this quake (12)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Mark as helpful or interesting.
Send your own user report!
Ashgabat, Turkmenistan (214.6 km ENE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : It was around 4:40 a.m. I was asleep. Then I woke up of a sudden shake. My bed as well as some furniture moved from side to side. It lasted a few seconds. | 4 users found this interesting.  
141.7 km W of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : It woke me up! | 3 users found this interesting.  
home (3399 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / complex motion difficult to describe / 30-60 s : longer transition of cold power | 2 users found this interesting.  
Ashgabat (154.3 km ENE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : Shahshsh | One user found this interesting.  
Gorgan / Light shaking (MMI IV) / 20-30 s
Mashhad / Moderate shaking (MMI V) / horizontal (sideways) swinging / 10-15 s
113.8 km W of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
بجنورد / Strong shaking (MMI VI) / rattling, vibrating / 2-5 s
Ashgabat (156.3 km ENE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Bojnourd / Light shaking (MMI IV) / very short
Ashgabat / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s
211.9 km WSW of epicenter [Map] / Weak shaking (MMI III) / 2-5 s
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