Light mag. 3.9 earthquake - South Pacific Ocean, 28 km south of Gisborne, New Zealand, on Wednesday, Sep 15, 2021 8:55 pm (GMT +12) -

Updated: Sep 16, 2021 10:20 GMT -
I felt this quake
Light mag. 3.9 earthquake - South Pacific Ocean, 28 km south of Gisborne, New Zealand, on Wednesday, Sep 15, 2021 8:55 pm (GMT +12)

Light magnitude 3.9 earthquake at 25 km depth

15 Sep 08:57 UTC: First to report: GEONET (NZ) after 2 minutes.
15 Sep 09:00: Magnitude recalculated from 4.2 to 3.9. Hypocenter depth recalculated from 23.8 to 25.1 km (from 14.8 to 15.6 mi). Epicenter location corrected by 0.6 km (0.4 mi) towards SSE.
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Date & time: Sep 15, 2021 08:55:19 UTC -
Local time at epicenter: Wednesday, Sep 15, 2021 8:55 pm (GMT +12)
Magnitude: 3.9
Depth: 25.1 km
Epicenter latitude / longitude: 38.90403°S / 178.0231°E (South Pacific Ocean, New Zealand)
Antipode: 38.904°N / 1.977°W
Nearest volcano: Reporoa (157 km / 98 mi)
Nearby towns and cities:
26 km (16 mi) SSE of Manutuke (pop: 685) --> See nearby quakes!
28 km (17 mi) S of Gisborne (pop: 34,300) --> See nearby quakes!
59 km (36 mi) ENE of Wairoa (pop: 4,260) --> See nearby quakes!
116 km (72 mi) NE of Napier City (pop: 56,800) --> See nearby quakes!
130 km (81 mi) NE of Hastings (pop: 61,700) --> See nearby quakes!
139 km (86 mi) SE of Whakatane (pop: 18,600) --> See nearby quakes!
177 km (110 mi) ESE of Rotorua (pop: 65,900) --> See nearby quakes!
211 km (131 mi) SE of Tauranga (pop: 110,300) --> See nearby quakes!
366 km (228 mi) SE of Auckland (pop: 417,900) --> See nearby quakes!
383 km (238 mi) NE of Wellington (pop: 381,900) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 10.6°C (51 F), humidity: 93%, wind: 8 m/s (16 kts) from NE
Primary data source: GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) 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.
Mag.DepthLocationSource
3.925 kmNew ZealandGEONET (NZ)
3.925 kmNew Zealand: OFF E. COAST OF N. ISLAND, N.Z.EMSC

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Translate
Gisborne / Light shaking (MMI IV) / 15-20 s
Gisborne / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
Gisborne / Very weak shaking (MMI II) / single lateral shake : Slight rocking nothing major  
Gisborne / Very weak shaking (MMI II) / horizontal (sideways) swinging / 10-15 s : Very weak  
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