IGES Institute of Geophysics and Engineering Seismology after A. Nazarov

A night tremor near Tsaghkunk

2.0ML
A night tremor near Lake Sevan

Near Tsaghkunk, Gegharkunik

3.5 km south of Tsaghkunk, 7 km west of Sevan

  • Date28 October 2026
  • Time03:49 local · 23:49:51 UTC (27 Oct)
  • MagnitudeML 2.0

Located by the CHARNET network, IGES

At ten to four in the morning on 28 October, a small earthquake occurred in Gegharkunik province, about 3.5 kilometres south of the village of Tsaghkunk and 7 kilometres west of the town of Sevan. It was a weak event that most people would not have noticed, but our stations recorded it and located the epicentre.

At our Byurakan station on the slope of Aragats, 56 km away, the S-wave arrived about 7 seconds after the P-wave.

Near and far: 54, 56 and 78 km
GLRKGyulagarak · 54 km · N–SP 23:50:01.6S 23:50:08.8
BRKNByurakan · 56 km · E–WP 23:50:02.0S 23:50:09.1
DGZVDeghdzavan · 78 km · N–SP 23:50:05.6S 23:50:15.2

Horizontal components (N–S at Gyulagarak and Deghdzavan, E–W at Byurakan), 1–15 Hz, the whole earthquake, 63 seconds of record (23:49:58–23:51:01 UTC), shown 3× faster. Blue — the P-wave, gold — the S-wave. Location and magnitude: IGES, CHARNET network.