Strong mag. 5.7 earthquake - Tasman Sea, 231 km southwest of Invercargill, Southland, New Zealand, on Tuesday, 23 Feb 2021 5:07 pm (GMT +13) -

Strong mag. 5.7 earthquake - Tasman Sea, 231 km southwest of Invercargill, Southland, New Zealand, on Tuesday, 23 Feb 2021 5:07 pm (GMT +13)

Strong magnitude 5.7 earthquake at 5 km depth

23 Feb 04:11 UTC: First to report: GEONET (NZ) after 4 minutes.
23 Feb 04:19: Magnitude recalculated from 5.2 to 5.7. Epicenter location corrected by 20 km (12 mi) towards W.
Date & time: 23 Feb 2021 04:07:26 UTC -
Local time at epicenter: Tuesday, 23 Feb 2021 5:07 pm (GMT +13)
Magnitude: 5.7
Depth: 5.0 km
Epicenter latitude / longitude: 47.39288°S / 165.68594°E (Tasman Sea, New Zealand)
Nearby towns and cities:
193 km (120 mi) WSW of Half Moon Bay (pop: 387) --> See nearby quakes!
231 km (143 mi) WSW of Invercargill (pop: 47,300) --> See nearby quakes!
269 km (167 mi) SW of Te Anau (pop: 2,070) --> See nearby quakes!
287 km (178 mi) WSW of Gore (pop: 12,100) --> See nearby quakes!
302 km (187 mi) WSW of Papatowai (pop: 6,590) --> See nearby quakes!
349 km (217 mi) SW of Queenstown (pop: 10,400) --> See nearby quakes!
405 km (252 mi) WSW of Dunedin (pop: 114,300) --> See nearby quakes!
480 km (298 mi) SW of Oamaru (pop: 13,000) --> See nearby quakes!
545 km (338 mi) SW of Timaru (pop: 28,000) --> See nearby quakes!
991 km (616 mi) SW of Wellington (pop: 381,900) --> See nearby quakes!
168 km (104 mi) WSW of Stewart Island (pop: 387) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 15.5°C (60 F), humidity: 88%, wind: 22 m/s (43 kts) from N
Primary data source: GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Estimated released energy: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 5.75 kmNew ZealandGEONET (NZ)
M 5.131 km206 Km WSW of Riverton, New ZealandUSGS
M 5.130 kmOFF W. COAST OF S. ISLAND, N.Z., New ZealandEMSC
M 5.119 kmOff W. Coast of S. Island, N.Z., New ZealandGeoAu
M 5.410 kmOff W. Coast of S. Island, N.Z., New ZealandBMKG
M 5.110 kmOff W. Coast of S. Island, N.Z., New ZealandGFZ

User reports for this quake (13)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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186 km ENE of epicenter [Map] / Light shaking (MMI IV) : Slight shaking for first 20-30 seconds then built in strength for approximately 10 seconds before peterimg off | 6 users found this interesting.
Dalby Qld Australia / Weak shaking (MMI III) / 2-5 s : 2 x approx 3 second tremors | 4 users found this interesting.
Gore / Weak shaking (MMI III) : Rocked the couch I was sitting on side ways | 2 users found this interesting.
Otatara Invercargill / Weak shaking (MMI III) : Slightly shaking of chair | One user found this interesting.
Invercargill (220.1 km ENE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
london (18900 km WNW of epicenter) [Map] / Very weak shaking (MMI II)
Gore (261.3 km ENE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s
231 km ENE of epicenter [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s
Thornbury Southland (207.3 km ENE of epicenter) [Map] / not felt
Woodend invercargill / not felt
Invercargill / Very weak shaking (MMI II)
Central hastings / Weak shaking (MMI III) / rattling, vibrating / 10-15 s
Invercargill / Light shaking (MMI IV)
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Aftershocks

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