Earthquake with magnitude of Mwp 5.8 on date 19-09-2023 and time 21:14:50 (UTC) in region South Island, New Zealand [Land: New Zealand]

A magnitude Mwp 5.8 earthquake occured in region: South Island, New Zealand [Land: New Zealand], on

  • 19-09-2023 21:14:50 (UTC)
  • 19-09-2023 23:14:50 (UTC +02:00) Italian time
  • 20-09-2023 09:14:50 (UTC +12:00) local time in the region of the earthquake (Pacific/Auckland)

and geographic coordinates (lat, lon) -43.6570, 171.3910 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.3
Mwp 5.8

Mwpd 5.9
2023-09-19
21:14:50
-43.657 171.391 9 2023-09-19
21:34:49
Sala Sismica INGV-Roma 121244021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-19 21:14:50
Latitude -43.6570
Longitude 171.3910
Depth (km) 9 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 121244021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 34921029
Semi-minor axis of confidence ellipse (meter) 20934987
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 29549400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127.628
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.77724
Epicentral distance of station closest to the epicenter (degree) 1.48591
Epicentral distance of station farthest from the epicenter (degree) 64.31567
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

Mwp:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 6
Type of magnitude Mwp
Reference to an origin 121244021
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-19 21:34:49

Mwpd:5.9

Field Value
Value 5.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude Mwpd
Reference to an origin 121244021
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-19 21:34:49

mb:5.3

Field Value
Value 5.3
Uncertainty 0.2
Num. used stations 16
Type of magnitude mb
Reference to an origin 121244021
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-19 21:34:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GE.SMRI.BHZ. 2023-09-19T21:25:25.12 10.0 positive automatic P 286 7139.0427 -0.724323 0.20244
GE.BKB.BHZ. 2023-09-19T21:25:25.62 10.0 positive automatic P 295 7137.8439 -0.404959 0.197906
GE.LUWI.BHZ. 2023-09-19T21:24:59.17 10.0 positive automatic P 301 6727.4769 -0.299239 0.115363
GE.JAGI.BHZ. 2023-09-19T21:24:58.42 10.0 positive automatic P 288 6740.7525 -1.32007 0.168348
II.KAPI.BHZ.00 2023-09-19T21:24:51.72 10.0 positive automatic P 295 6603.5676 -0.517483 0.239392
GE.FAKI.BHZ. 2023-09-19T21:24:07.22 10.0 positive automatic P 308 5932.4394 -1.15178 0.193951
GE.SOEI.BHZ. 2023-09-19T21:24:06.12 10.0 positive automatic P 295 5880.2472 -0.122175 0.0712869
IU.QSPA.BHZ.00 2023-09-19T21:23:18.57 10.0 positive automatic P 180 5136.8136 1.83165 0.46771
IU.NWAO.BHZ.00 2023-09-19T21:22:49.45 10.0 positive automatic P 265 4777.0737 0.929335 0.457507
IU.SBA.BHZ.00 2023-09-19T21:21:39.22 10.0 positive automatic P 182 3800.7954 2.58923 0.690326
IU.CTAO.BHZ.00 2023-09-19T21:21:11.10 10.0 positive automatic P 310 3501.273 -1.16868 0.861952
AU.QLP.BHZ. 2023-09-19T21:20:38.10 10.0 positive automatic P 299 3085.2561 -0.225923 0.941176
AU.HTT.BHZ.00 2023-09-19T21:20:32.38 10.0 positive automatic P 281 3014.6823 -0.508271 0.91954
AU.EIDS.BHZ. 2023-09-19T21:20:09.60 10.0 positive automatic P 311 2736.3165 -0.665657 0.162602
ND.KOUNC.BHZ.00 2023-09-19T21:20:03.35 10.0 positive automatic P 343 2647.7052 -0.360089 0.909091
ND.MARNC.BHZ.00 2023-09-19T21:19:50.65 10.0 positive automatic P 352 2480.8722 2.6402 0.888889
ND.ONTNC.BHZ.00 2023-09-19T21:19:41.20 10.0 positive automatic P 348 2412.7071 0.0473906 0.754717
AU.ARMA.BHZ. 2023-09-19T21:19:28.80 10.0 positive automatic P 304 2275.2114 0.757827 1.24096
AU.TOO.BHZ.00 2023-09-19T21:19:27.78 10.0 positive automatic P 278 2273.6574 0.427567 0.930233
G.CAN.BHZ.00 2023-09-19T21:19:13.05 10.0 positive automatic P 288 2120.7882 0.560012 0.909091
AU.RIV.BHZ. 2023-09-19T21:19:06.85 10.0 positive automatic P 295 2055.0318 -0.0864319 0.952381
AU.MILA.BHZ.00 2023-09-19T21:19:01.23 10.0 positive automatic P 284 2010.7428 0.134757 0.91954
II.TAU.BHZ.00 2023-09-19T21:18:53.37 10.0 positive automatic P 264 1939.8471 0.421409 0.888889
AU.NFK.BHZ.00 2023-09-19T21:18:22.28 10.0 positive automatic P 348 1650.7254 2.70646 0.480769
NZ.OUZ.HHZ.10 2023-09-19T21:16:54.61 10.0 positive automatic P 12 955.2993 -1.04164 1.25099
NZ.KHZ.HHZ.10 2023-09-19T21:15:25.36 10.0 positive automatic P 52 222.1443 -2.11282 0.329642
NZ.ODZ.HHZ.10 2023-09-19T21:15:12.80 10.0 positive automatic P 201 164.9349 -4.85168 0.835692
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download