Quake info: Light mag. 3.9 earthquake


Light mag. 3.9 earthquake - Aegean Sea, 59 km south of Kos Town, Dodecanese, South Aegean, Greece, on 18 Apr 1:35 am (GMT +3)

Light magnitude 3.9 earthquake at 17 km depth

17 Apr 22:43 UTC: First to report: EMSC after 7 minutes.
17 Apr 22:43: Now using data updates from NOA
17 Apr 22:51: Magnitude recalculated from 4.0 to 3.9. Hypocenter depth recalculated from 10.0 to 16.5 km (from 6.2 to 10.3 mi). Epicenter location corrected by 8.5 km (5.3 mi) towards SSW.

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Date & time: 17 Apr 2021 22:35:53 UTC –
Local time at epicenter: 18 Apr 1:35 am (GMT +3)
Magnitude: 3.9
Depth: 16.5 km
Epicenter latitude / longitude: 36.3753°N / 27.1257°E (
Aegean Sea, Greece)
Nearest volcano: Nisyros (17 km / 11 mi)
Nearby towns and cities:
23 km (14 mi) S of Nikia (pop: 48) –> See nearby quakes!
44 km (27 mi) SSE of Kéfalos (pop: 2,530) –> See nearby quakes!
48 km (30 mi) S of Antimacheia (Dodecanese) (pop: 2,250) –> See nearby quakes!
59 km (37 mi) SSW of Kos Town (Kos) (pop: 19,200) –> See nearby quakes!
65 km (41 mi) SSE of Kalymnos (Dodecanese) (pop: 12,300) –> See nearby quakes!
72 km (45 mi) S of Turgutreis (Bodrum, Turkey) (pop: 16,500) –> See nearby quakes!
79 km (49 mi) SSW of Bodrum (Turkey) (pop: 39,300) –> See nearby quakes!
92 km (57 mi) W of Ialysos (Ialisos) (pop: 11,500) –> See nearby quakes!
98 km (61 mi) W of Rhodes (pop: 56,100) –> See nearby quakes!
350 km (218 mi) ESE of Athens (pop: 664,000) –> See nearby quakes!
77 km (48 mi) WNW of Rhodes Island (pop: 115,300) –> See nearby quakes!

Weather at epicenter at time of quake:
Light Rain 20°C (68 F), humidity: 56%, wind: 11 m/s (22 kts) from SSE

Primary data source: NOA (National Observatory of Athens)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info

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1 hour and 36 minutes ago
17 Apr 2021 22:35 GMT, 18 Apr 1:35 am (GMT +3) local time
Lat / Lng: 36.3753 / 27.1257: Aegean Sea, Greece
Source: NOA
Other sources: USGS: 4.2 / 10 km, ENSN: 4.0 / 10 km, 1 more…

Detail info | You felt it? – Report it!‘;storedMarkers.push([‘quake-6207089′,36.37530,27.12570,’1 hour and 36 minutes ago: Mag 3.9, Aegean Sea, Greece’,html,’quakes-5-24.png’,18,18,9,9,124]);

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.

Magnitude Depth Location Source
3.9 17 km 23 Km S From Nissiros, Greece NOA
3.9 7.8 km ONIKI ADALAR (MEDITERRANEAN SEA), Greece KOERI-RETMC
4.2 2 km 15 Km S From Nissiros, Greece EMSC
4.2 10 km 28 Km S of Mandráki, Greece USGS
4.0 10 km Mediterranean Sea, 513 Km N of Marsa Matruh, Greece ENSN

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