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Moderate mag. 3.9 earthquake - Sea of Marmara, 31 km northeast of Bandırma, Balıkesir, Turkey, on Thursday, Mar 9, 2023 at 8:28 am (GMT +3) -

Moderate mag. 3.9 earthquake - Sea of Marmara, 31 km northeast of Bandırma, Balıkesir, Turkey, on Thursday, Mar 9, 2023 at 8:28 am (GMT +3) Moderate mag. 3.9 earthquake - Sea of Marmara, 31 km northeast of Bandırma, Balıkesir, Turkey, on Thursday, Mar 9, 2023 at 8:28 am (GMT +3)

Moderate magnitude 3.9 earthquake at 10 km depth

9 Mar 05:32 UTC: First to report: RaspberryShake after 3 minutes.
9 Mar 05:34: Now using data updates from NOA

Earthquake details

Date & timeMar 9, 2023 05:28:56 UTC -
Local time at epicenterThursday, Mar 9, 2023 at 8:28 am (GMT +3)
Depth10.0 km
Epicenter latitude / longitude40.588°N / 28.167°E (Sea of Marmara, Turkey)
Antipode40.588°S / 151.833°W
Shaking intensityWeak shaking
Felt7 reports
Primary data sourceNOA (National Observatory of Athens)
Nearest volcanoKenger (220 km / 137 mi)
Nearby towns and cities31 km (19 mi) NNE of Bandırma (pop: 107,600) | Show on map | Quakes nearby
38 km (24 mi) NE of Erdek (pop: 22,700) | Show on map | Quakes nearby
45 km (28 mi) NNW of Karacabey (pop: 44,300) | Show on map | Quakes nearby
59 km (37 mi) SW of Beylikduzu (pop: 122,500) | Show on map | Quakes nearby
60 km (37 mi) SW of Büyükçekmece (pop: 163,100) | Show on map | Quakes nearby
65 km (40 mi) NNW of Mustafakemalpaşa (pop: 101,400) | Show on map | Quakes nearby
81 km (50 mi) SW of Istanbul (pop: 14,804,100) | Show on map | Quakes nearby
405 km (251 mi) WNW of Ankara (pop: 3,517,200) | Show on map | Quakes nearby
Weather at epicenter at time of quakeScattered Clouds 7.3°C (45 F), humidity: 82%, wind: 6 m/s (11 kts) from SSW
Estimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | about seismic energy
Show interactive Map
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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.
3.910 kmTurkey: 164 Km ESE From DidymoteichoNOA
4.012 kmTurkeyRaspberryShake

User reports for this quake (14)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Bahçelievler, Istanbul (69.4 km NE of epicenter) [Map] / not felt / rattling, vibrating / 5-10 s : У меня трясло кровать несколько секунд Живу на 4 этаже и мой сын был на 3ем он тоже почувствовал  
Bursa (76.6 km SE of epicenter) [Map] / Very weak shaking (MMI II) / very short
Istanbul (84.8 km NE of epicenter) [Map] / Light shaking (MMI IV)
اسطنبول (82.3 km NE of epicenter) [Map] / not felt (reported through our app)
Bahçelievler, Istanbul (73.1 km NE of epicenter) [Map] / not felt (reported through our app)
Çatalca, Istanbul (70.7 km NNE of epicenter) [Map] / not felt
Gürpınar, kartal sokak (58.4 km NE of epicenter) [Map] / Moderate shaking (MMI V) / 1-2 s
Bandırma (30.2 km SSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Light shaking, vibrating, 1-2 seconds long  
Istanbul / Very weak shaking (MMI II) / single vertical bump : Seemed to a light earthquake but both me and my husband woke up. . (reported through our app)  
Beyoglu / not felt : I was asleep.  
Istanbul / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : Light shaking of the bed  
İstanbul / not felt (reported through our app)
Kanuni sultan suleyman education and research hosp / not felt (reported through our app)
Istanbul / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : I was in bed, the I felt light movement from side to side (reported through our app)  

Earlier earthquakes in the same area

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