Reviewed by USGSNew Zealand4y ago
M5.2 earthquake in Kermadec Islands, New Zealand
Thursday, January 20, 2022, 13:03:07 UTC · 30.577°S, 178.053°W
A magnitude 5.2 earthquake struck in Kermadec Islands, New Zealand on Thursday, January 20, 2022, 13:03:07 UTC, at a depth of 38.4 km (shallow). It is the strongest earthquake within 300 km since an M5.2 on December 14, 2021.
- Magnitude
- 5.2
- Moderate · mb
- Depth
- 38 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 75 km aftershock search area
In context
How big was it, and why here?
Energy released
951 tons of TNT
That is about 1/16 of the Hiroshima bomb. It released about 2 times the energy of a magnitude 5.0.
Tectonic setting
115 km
from the nearest mapped plate boundary, between the Kermadec and Australian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
38 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 75 km
USGS lists 11 M2.5+ earthquakes within 75 km in the following 30 days; the largest was M5.0 on February 8, 2022. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 4.8Kermadec Islands, New Zealand4y ago · 68 km W of this epicenter
- 4.8Kermadec Islands, New Zealand4y ago · 71 km W of this epicenter
- 5.0Kermadec Islands, New Zealand4y ago · 38 km NE of this epicenter
- 4.6Kermadec Islands, New Zealand4y ago · 46 km E of this epicenter
- 4.9Kermadec Islands, New Zealand4y ago · 73 km E of this epicenter
- 4.7Kermadec Islands, New Zealand4y ago · 61 km E of this epicenter
- 4.4Kermadec Islands, New Zealand4y ago · 49 km E of this epicenter
- 4.8Kermadec Islands, New Zealand4y ago · 47 km NE of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 2,552 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.21917 Kermadec Islands, New Zealand EarthquakeMay 1, 1917 · 150 km SE of this epicenter
- 8.12021 Kermadec Islands, New Zealand EarthquakeMarch 4, 2021 · 121 km NE of this epicenter
- 8.01976 Kermadec Islands, New Zealand EarthquakeJanuary 14, 1976 · 242 km N of this epicenter
- 7.6Kermadec Islands regionJuly 6, 2011 · 201 km NE of this epicenter
- 7.5Kermadec Islands, New ZealandNovember 16, 1917 · 83 km N of this epicenter
- 7.4Kermadec Islands, New ZealandMarch 4, 2021 · 102 km N of this epicenter
- 7.4Kermadec Islands regionOctober 21, 2011 · 248 km NE of this epicenter
- 7.4Kermadec Islands regionMay 16, 2006 · 182 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 17 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1976M7.9
Kermadec Islands
14 Jan 1976 · 165 km away
Limited damage (under $1M)tsunami
- 1968M7.3
S Of, Raoul
25 Jul 1968 · 41 km away
Limited damage (under $1M)tsunami
- 2021M8.1
Sse Of Raoul Island
4 Mar 2021 · 120 km away · intensity IX
tsunami
- 1917M8.0
Kermadec Islands
1 May 1917 · 184 km away
tsunami
- 1976M7.8
Kermadec Islands
14 Jan 1976 · 108 km away · intensity VIII
- 1959M7.7
Kermadec Islands
14 Sep 1959 · 252 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.