Moderate magnitude 4.3 earthquake at 5 km depth
20 Feb 07:35 UTC: First to report: GEONET (NZ) after 2 minutes.
20 Feb 07:39: Magnitude recalculated from 4.2 to 4.3. Hypocenter depth recalculated from 6.3 to 5.0 km (from 3.9 to 3.1 mi).
Update Sat, 20 Feb 2021, 07:39Moderate tremor of magnitude 4.2 just reported 78 km northwest of Christchurch, New Zealand
4.2 quake 20 Feb 8:33 pm (GMT +13)
An earthquake of magnitude 4.2 occurred in the evening on Saturday 20 February 2021 at 8:33 pm local time near Christchurch, Christchurch City, Canterbury, New Zealand, as reported by New Zealand's Earthquake Commission and Geological Survey (GeoNet).
According to preliminary data, the quake was located at a very shallow depth of 6.3 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.2 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Oxford (pop. 1,800) located 47 km from the epicenter, Amberley (pop. 1,100) 48 km away, Woodend (pop. 3,100) 58 km away, Kaiapoi (pop. 10,200) 63 km away, Darfield (pop. 1,600) 68 km away, and Christchurch (pop. 363,900) 78 km away.
Download the Volcanoes & Earthquakes app
and get one of the fastest seismic alerts online:Android