Turkey earthquakes

M3.3 earthquake 18 km SE of Kumba?, Turkey

A magnitude 3.3 earthquake struck 18 km SE of Kumba?, Turkey on Tue, Sep 21, 1999, 3:46 PM GMT+3 (12:46 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M3.5 31 km NNW of Biga, Turkey. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.3 (Md, duration), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1999-09-21 12:46:21 UTC
Depth
18.6 km (11.6 mi), shallow
Epicenter
40.772° N, 27.623° E
Region
Turkey
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.811 km ESE of Kumba?, Turkey · 9855 days ago · 6 km deep · 7 km away
  2. 2.78 km SW of Manyas, Turkey · 9851 days ago · 0 km deep · 89 km away
  3. 3.531 km NNW of Biga, Turkey · 9846 days ago · 11 km deep · 52 km away
  4. 3.017 km SSE of Kumba?, Turkey · 9839 days ago · 5 km deep · 6 km away
  5. 2.814 km SSE of Kumba?, Turkey · 9835 days ago · 4 km deep · 7 km away
  6. 2.914 km SSE of Beylikdüzü, Turkey · 9822 days ago · 5 km deep · 90 km away

Before

  1. 2.8Western Turkey · 9874 days ago · 9 km deep · 14 km away
  2. 3.214 km NNE of Marmara, Turkey · 9875 days ago · 6 km deep · 7 km away
  3. 3.713 km NNE of Marmara, Turkey · 9875 days ago · 8 km deep · 8 km away
  4. 4.87 km NNE of Marmara, Turkey · 9875 days ago · 10 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0009eta. Read Sat, Oct 3, 2026, 3:15 PM UTC.