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Light mag. 4.7 earthquake - South Pacific Ocean, New Zealand, on 19 May 7:13 pm (GMT +12)

This quake was likely an aftershock of the 8.1 quake South Pacific Ocean, New Zealand, Mar 4, 2021 7:28 am (GMT -12), which had occurred 11 weeks earlier.

Light mag. 4.7 earthquake - South Pacific Ocean, New Zealand, on 19 May 7:13 pm (GMT +12)

Light magnitude 4.7 earthquake at 155 km depth

19 May 07:19 UTC: First to report: GEONET (NZ) after 6 minutes.
19 May 07:23: Magnitude recalculated from 4.6 to 4.7. Hypocenter depth recalculated from 265.7 to 155.0 km (from 165 to 96 mi). Epicenter location corrected by 112 km (70 mi) towards WSW.

Earthquake details

Date & time	May 19, 2021 07:13:09 UTC
Local time at epicenter	19 May 7:13 pm (GMT +12)
Status	Confirmed
Magnitude	4.7
Depth	155.0 km
Epicenter latitude / longitude	30.32123°S / 178.38405°W (South Pacific Ocean, New Zealand)
Antipode	30.321°N / 1.616°E
Shaking intensity	Not felt
Felt	0 reports
Primary data source	GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcano	Raoul Island (78 km / 48 mi)
Nearby towns and cities
Weather at epicenter at time of quake	Overcast Clouds 19.2°C (66 F), humidity: 60%, wind: 5 m/s (10 kts) from S
Estimated seismic energy released	7.1 x 10¹¹ joules (197 megawatt hours, equivalent to 169 tons of TNT) \| about seismic energy

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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.	Depth	Location	Source
4.7	155 km	New Zealand	GEONET (NZ)

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Seismograms

Seismic station: Folaha (Nukuhetulu) (TNG1/YC network) | Distance from quake: 1066 km / 662 mi | Show on map | Station Info

Seismic station Folaha (Nukuhetulu): vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

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One Tree Point, bream bay, Whangarei / not felt

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