Light mag. 3.1 earthquake - Sea of Marmara, 6.5 km north of Yalova, Turkey, on Thursday, Sep 23, 2021 8:58 am (GMT +3) -

Light mag. 3.1 earthquake - Sea of Marmara, 6.5 km north of Yalova, Turkey, on Thursday, Sep 23, 2021 8:58 am (GMT +3)

Light magnitude 3.1 earthquake at 2 km depth

23 Sep 06:02 UTC: First to report: EMSC after 4 minutes.
23 Sep 06:03: Magnitude recalculated from 2.9 to 3.0. Hypocenter depth recalculated from 10.0 to 9.0 km (from 6.2 to 5.6 mi). Epicenter location corrected by 2.8 km (1.7 mi) towards WSW.
... [show all] ...
23 Sep 07:04: Magnitude recalculated from 3.2 to 3.1.
Date & time: Sep 23, 2021 05:58:00 UTC -
Local time at epicenter: Thursday, Sep 23, 2021 8:58 am (GMT +3)
Magnitude: 3.1
Depth: 2.0 km
Epicenter latitude / longitude: 40.71°N / 29.25°E (Sea of Marmara, Turkey)
Antipode: 40.71°S / 150.75°W
Nearest volcano: Kenger (242 km / 150 mi)
Nearby towns and cities:
7 km (4 mi) NNW of Yalova (pop: 71,300) --> See nearby quakes!
18 km (11 mi) SW of Gebze (pop: 281,400) --> See nearby quakes!
25 km (16 mi) NNW of Orhangazi (pop: 51,800) --> See nearby quakes!
26 km (16 mi) SSE of Maltepe (pop: 427,000) --> See nearby quakes!
28 km (17 mi) S of Sultanbeyli (pop: 286,600) --> See nearby quakes!
32 km (20 mi) SSE of Ataşehir (pop: 361,600) --> See nearby quakes!
33 km (20 mi) S of Sancaktepe (pop: 241,000) --> See nearby quakes!
36 km (22 mi) SSE of Umraniye (pop: 573,300) --> See nearby quakes!
42 km (26 mi) SE of Istanbul (pop: 14,804,100) --> See nearby quakes!
318 km (198 mi) WNW of Ankara (pop: 3,517,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Light Rain 13.8°C (57 F), humidity: 81%, wind: 6 m/s (11 kts) from NNE
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 tons of TNT) More info
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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
3.12 kmWESTERN TURKEYEMSC
3.21.6 kmTurkey: YALOVA ACIKLARI (MARMARA SEA)KOERI-RETMC

User reports for this quake (9)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Yalova (8.2 km SSE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / very short
Yalova (5.9 km S of epicenter) [Map] / Weak shaking (MMI III)
Heybeliada / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
istanbul (31.7 km NNW of epicenter) [Map] / not felt / single vertical bump / very short
Pendik (18.6 km N of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s : A big jolt  
Yalova, Turkey / Light shaking (MMI IV) / 1-2 s : The house shook.  
Uskudar / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s
Yalova, Turkey (6.3 km SSE of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 2-5 s
Istanbul (36.2 km NNW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 1-2 s : It was a strong vertical shake  
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