M6.5 quake 177 km W of Nikolski, Alaska leads 20 notable earthquakes on 17 September 2026
Quakes M2.5+
20
20 of any size
Strongest
M6.5
177 km W of Nikolski, Alaska
Other hazards
31
Fires, storms, floods, eruptions
Peak Kp
—
Geomagnetic activity
Earthquakes
Seismic networks reported 20 earthquakes in total, 20 of them magnitude 2.5 or above. That is busier than the previous week's average of 5 a day.
The strongest was a magnitude 6.5 177 km W of Nikolski, Alaska, at a depth of 98 km. It was flagged for possible tsunami potential, so check official bulletins for the area. 8 people reported feeling it.
Across the day, 1 quake reached magnitude 6 or more, 5 quakes reached magnitude 5 or more, 20 quakes reached magnitude 4 or more.
- 6.5177 km W of Nikolski, Alaska17 Sept 2026, 14:19 UTC · 98 km deep
- 5.3152 km SSE of Hihifo, Tonga17 Sept 2026, 04:06 UTC · 10 km deep
- 5.3189 km SE of Mata-Utu, Wallis and Futuna17 Sept 2026, 06:42 UTC · 10 km deep
- 5.2130 km WNW of Ternate, Indonesia17 Sept 2026, 06:20 UTC · 10 km deep
- 5.0South Atlantic Ocean17 Sept 2026, 06:48 UTC · 10 km deep
- 4.9northern Mid-Atlantic Ridge17 Sept 2026, 19:19 UTC · 10 km deep
- 4.759 km SSE of Lakatoro, Vanuatu17 Sept 2026, 06:32 UTC · 10 km deep
- 4.7105 km SE of Vilyuchinsk, Russia17 Sept 2026, 13:30 UTC · 64 km deep
Volcanoes, fires, storms and floods
New entries on the hazard record: 5 floods, 26 wildfires.
Sky & Space
5 asteroids passed Earth. The closest, (2026 RB39), came within 1.0 lunar distances and is 7 m across.
4 orbital launches were scheduled.