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- M7.8 - M7.8 Earthquake in Kamchatka, Russia with Tsunami Threat

 

On September 18, 2025, a magnitude 7.8 earthquake struck Kamchatka, the result of expected aftershocks following the recent major 8.8 magnitude earthquake.

 

M7.8 Earthquake in Kamchatka, Russia with Tsunami Threat
Reading time: Less than a minute

Our station detected the movement, as reflected in the graphs, but no alarms were triggered. This was because, at the very moment we were monitoring, significant changes were being made to the detection algorithms. Although this reaction was anticipated, we were unable to capture the exact moment.

Nevertheless, we were able to record the event live and document it with seismograms and a spectrogram.

Earthquake data:

 

Date and time of origin: 2025-09-18 18:58:15 UTC
Date and time of arrival at the Citizen seismic station: 2025-09-18 19:10:43 UTC
Location where the station is located: Germans Sàbat, Girona, ES (EU)
Time difference from the event to arrival at the station: 12 minutes and 28 seconds
Distance from the epicenter to the station: 9.219,43 Km
Wave speed: 12,33 km/s => 12.325,45 m/s
Wave type (according to speed): PKP
Sensor type: Geophone 4.5Hz - 200 V/m/s
Sampling frequency (sps): 100Hz
Place of Origin: 128 km E of Petropavlovsk-Kamchatsky, Russia
Geodetic coordinates of the epicenter:  📍 53.1760°N 160.5370°E
Depth (hypocenter): 30.0 km
Tsunami alert: Yes
Magnitude Richter Scale: M7.8
Modified Mercalli Scale Magnitude MMI => DYFI (Did You Feel It):
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URL Official Data USGS:  https://earthquake.usgs.gov/earthquakes/eventpage/...

 

 

- GlobalQuake visualization software





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