Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 16-02-2023 and time 04:23:09 (UTC) in region 5 km SE Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Amatrice (RI), on

  • 16-02-2023 04:23:09 (UTC)
  • 16-02-2023 05:23:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5910, 13.3160 at 14 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 5 2657 2657
Campotosto AQ 6 542 3199
Capitignano AQ 8 665 3864
Montereale AQ 9 2581 6445
Accumoli RI 13 667 7112
Cittareale RI 13 482 7594
Crognaleto TE 14 1297 8891
Barete AQ 16 737 9628
Cortino TE 16 656 10284
Cagnano Amiterno AQ 16 1369 11653
Pizzoli AQ 17 4326 15979
Borbona RI 17 617 16596
Fano Adriano TE 19 296 16892
Posta RI 19 694 17586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
75 Km W of Chieti (51815 inhabitants)
75 Km W of Pescara (121014 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
95 Km SE of Perugia (166134 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
Bulletin
Rev1000 		ML 1.0 2023-02-16
04:23:09		 42.5913 13.316 14 2024-03-01
17:17:55		 Bollettino Sismico Italiano INGV 114506871
Reviewed
Rev100 		ML 1.0 2023-02-16
04:23:09		 42.5887 13.3132 13 2023-02-16
04:27:40		 Sala Sismica INGV-Roma 114473971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-16 04:23:09 ± 0.08
Latitude 42.5913 ± 0.0036
Longitude 13.3160 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114506871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 49
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.40469
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 114473971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-16 04:27:40

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 114506871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-10-30 11:00:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2023-02-16T04:23:22.19 0.6 undecidable manual S 344 37.0296 97 0.13 47
IV.GAVE.EHZ. 2023-02-16T04:23:21.61 0.6 undecidable manual S 288 36.2415 97 -0.24 47
IV.NRCA.HHZ. 2023-02-16T04:23:20.52 0.6 undecidable manual S 329 31.5462 99 -0.09 49
IV.GIGS.HHZ. 2023-02-16T04:23:18.76 0.3 undecidable manual S 126 25.9518 102 -0.4 68
IV.LNSS.HHZ. 2023-02-16T04:23:18.13 0.1 undecidable manual S 273 22.5552 105 -0.14 97
IV.FAGN.HHZ. 2023-02-16T04:23:18.26 0.3 undecidable manual P 149 42.2244 95 0.62 63
IV.TERO.HHZ. 2023-02-16T04:23:18.26 0.6 undecidable manual S 81 23.754 104 -0.32 47
IV.MC2.EHZ. 2023-02-16T04:23:17.00 0.3 undecidable manual P 344 37.0296 97 0.17 71
IV.ARRO.EHZ. 2023-02-16T04:23:17.98 0.3 undecidable manual P 268 44.9217 95 -0.07 71
7F.SIB1.EHE. 2023-02-16T04:23:16.55 0.3 undecidable manual P 354 33.8439 98 0.2 71
IV.GAVE.EHZ. 2023-02-16T04:23:16.71 0.1 positive manual P 288 36.2415 97 0 98
IV.RM33.EHZ. 2023-02-16T04:23:15.60 0.1 undecidable manual S 222 12.3765 127 -0.2 98
IV.GIGS.HHZ. 2023-02-16T04:23:15.11 0.1 undecidable manual P 126 25.9518 102 -0.05 98
IV.CAMP.HHZ. 2023-02-16T04:23:15.18 0.6 undecidable manual S 129 9.7791 136 -0.1 50
IV.NRCA.HHZ. 2023-02-16T04:23:15.88 0.1 undecidable manual P 329 31.5462 99 -0.11 96
IV.TERO.HHZ. 2023-02-16T04:23:14.79 0.1 undecidable manual P 81 23.754 104 -0.03 99
IV.SMA1.EHZ. 2023-02-16T04:23:14.36 0.6 undecidable manual S 20 4.5954 157 -0.16 51
IV.LNSS.HHZ. 2023-02-16T04:23:14.74 0.1 positive manual P 273 22.5552 105 0.1 98
IV.CAMP.HHZ. 2023-02-16T04:23:13.08 0.1 undecidable manual P 129 9.7791 136 0.16 99
IV.RM33.EHZ. 2023-02-16T04:23:13.31 0.1 undecidable manual P 222 12.3765 127 0.1 100
IV.SMA1.EHZ. 2023-02-16T04:23:12.66 0.1 negative manual P 20 4.5954 157 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.1 0.000154 1.3 AML other m 2023-02-16T04:23:14.81
IV.SMA1.EHE. ML:1.2 0.0001725 0.12 AML other m 2023-02-16T04:23:14.96
IV.CAMP.HHN. ML:0.9 0.00009085 0.22 AML other m 2023-02-16T04:23:15.26
IV.CAMP.HHE. ML:0.9 0.00007935 0.4 AML other m 2023-02-16T04:23:15.25
IV.RM33.EHE. ML:1.2 0.00014049999999999997 0.34 AML other m 2023-02-16T04:23:15.91
IV.RM33.EHN. ML:1.0 0.00008295 0.16 AML other m 2023-02-16T04:23:16.45
IV.LNSS.HHE. ML:1.2 0.0001019 0.12 AML other m 2023-02-16T04:23:18.32
IV.LNSS.HHN. ML:1.1 0.00008065 0.12 AML other m 2023-02-16T04:23:18.32
IV.TERO.HHN. ML:1.0 0.0000608 0.2 AML other m 2023-02-16T04:23:19.93
IV.GIGS.HHE. ML:0.3 0.000008 0.76 AML other m 2023-02-16T04:23:20.32
IV.GIGS.HHN. ML:0.3 0.00001041 0.56 AML other m 2023-02-16T04:23:20.84
IV.TERO.HHE. ML:0.8 0.000041549999999999994 0.62 AML other m 2023-02-16T04:23:20.88
IV.NRCA.HHE. ML:1.4 0.0001215 0.2 AML other m 2023-02-16T04:23:20.70
IV.NRCA.HHN. ML:1.1 0.000056349999999999994 0.12 AML other m 2023-02-16T04:23:21.00
IV.GAVE.EHE. ML:1.1 0.000047300000000000005 1.36 AML other m 2023-02-16T04:23:22.94
IV.GAVE.EHN. ML:0.9 0.0000321 1.12 AML other m 2023-02-16T04:23:22.41
IV.FAGN.HHE. ML:0.8 0.00002116 0.54 AML other m 2023-02-16T04:23:26.42
IV.FAGN.HHN. ML:0.9 0.0000229 0.42 AML other m 2023-02-16T04:23:27.94
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download