Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 12-12-2021 and time 15:24:27 (UTC) in region 3 km SE Amatrice (RI)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Amatrice (RI), on

  • 12-12-2021 15:24:27 (UTC)
  • 12-12-2021 16:24:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6080, 13.3180 at 10 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 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 10 665 3864
Montereale AQ 11 2581 6445
Accumoli RI 11 667 7112
Cittareale RI 13 482 7594
Crognaleto TE 15 1297 8891
Cortino TE 16 656 9547
Barete AQ 18 737 10284
Cagnano Amiterno AQ 18 1369 11653
Borbona RI 18 617 12270
Arquata del Tronto AP 19 1178 13448
Fano Adriano TE 19 296 13744
Pizzoli AQ 19 4326 18070
Rocca Santa Maria TE 19 537 18607
Acquasanta Terme AP 20 2916 21523

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of L'Aquila (69753 inhabitants)
32 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
75 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
94 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 1.7 2021-12-12
15:24:27		 42.6075 13.3183 10 2022-03-30
13:04:29		 Bollettino Sismico Italiano INGV 99681821
Reviewed
Rev100 		ML 1.7 2021-12-12
15:24:27		 42.5983 13.3263 12 2021-12-12
15:32:28		 Sala Sismica INGV-Roma 98430661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-12 15:24:27 ± 0.08
Latitude 42.6075 ± 0.0054
Longitude 13.3183 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99681821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.50722
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 99681821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-31 11:41:03

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 98430661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-12 15:32:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2021-12-12T15:24:45.63 0.6 undecidable manual S 138 56.2992 50 0.76 38
IV.GUMA.HHZ. 2021-12-12T15:24:44.10 0.6 undecidable manual S 2 50.5161 50 0.77 39
IV.CSP1.EHZ. 2021-12-12T15:24:44.80 0.3 undecidable manual S 350 54.501 50 0.4 65
IV.CESI.HHZ. 2021-12-12T15:24:44.78 0.6 undecidable manual S 323 55.5 50 0.12 46
IV.VCEL.EHN. 2021-12-12T15:24:43.64 0.6 undecidable manual S 119 48.8178 50 0.76 39
IV.FDMO.HHZ. 2021-12-12T15:24:43.50 0.3 undecidable manual S 339 51.2154 50 -0.01 71
IV.MF5.EHZ. 2021-12-12T15:24:42.20 0.3 undecidable manual S 15 43.7229 50 0.68 61
IV.MC2.EHZ. 2021-12-12T15:24:39.54 0.6 undecidable manual S 343 35.3424 50 0.26 46
IV.GAVE.EHZ. 2021-12-12T15:24:39.22 0.6 undecidable manual S 285 35.8419 50 -0.2 47
IV.T0110.HHZ. 2021-12-12T15:24:37.17 0.3 undecidable manual P 138 56.2992 50 -0.23 67
IV.GUMA.HHZ. 2021-12-12T15:24:36.46 0.3 undecidable manual P 2 50.5161 50 -0.05 71
IV.GIGS.HJZ. 2021-12-12T15:24:36.27 0.6 undecidable manual S 129 26.9508 50 -0.77 40
IV.CESI.HHZ. 2021-12-12T15:24:36.94 0.1 undecidable manual P 323 55.5 50 -0.34 88
IV.FDMO.HHZ. 2021-12-12T15:24:36.30 0.1 undecidable manual P 339 51.2154 50 -0.31 89
IV.VCEL.EHN. 2021-12-12T15:24:36.23 0.3 undecidable manual P 119 48.8178 50 -0.02 71
IV.CSP1.EHZ. 2021-12-12T15:24:36.80 0.1 undecidable manual P 350 54.501 50 -0.33 88
IV.MF5.EHZ. 2021-12-12T15:24:35.70 0.3 undecidable manual P 15 43.7229 50 0.23 69
IV.FAGN.HHZ. 2021-12-12T15:24:35.79 0.3 undecidable manual P 150 43.7229 50 0.33 68
IV.TERO.HHZ. 2021-12-12T15:24:35.33 0.6 undecidable manual S 86 23.3544 114 -0.71 41
IV.LNSS.HHZ. 2021-12-12T15:24:35.89 0.6 undecidable manual S 269 22.6551 114 0.07 49
IV.MC2.EHZ. 2021-12-12T15:24:34.01 0.3 undecidable manual P 343 35.3424 50 -0.16 71
IV.GAVE.EHZ. 2021-12-12T15:24:34.03 0.1 undecidable manual P 285 35.8419 50 -0.22 93
IV.MTRA.HNZ. 2021-12-12T15:24:33.80 0.3 undecidable manual S 21 17.7711 120 -0.49 68
IV.GIGS.HJZ. 2021-12-12T15:24:32.48 0.1 undecidable manual P 129 26.9508 50 -0.4 91
IV.CAMP.HHZ. 2021-12-12T15:24:32.56 0.3 undecidable manual S 137 10.878 133 0.2 73
IV.LNSS.HHZ. 2021-12-12T15:24:32.17 0.1 undecidable manual P 269 22.6551 114 0 100
IV.SMA1.EHZ. 2021-12-12T15:24:31.42 0.6 undecidable manual S 28 2.8971 164 0.56 45
IV.TERO.HHZ. 2021-12-12T15:24:31.93 0.1 undecidable manual P 86 23.3544 114 -0.37 93
IV.MTRA.HNZ. 2021-12-12T15:24:31.16 0.1 undecidable manual P 21 17.7711 120 -0.13 98
IV.CAMP.HHZ. 2021-12-12T15:24:30.47 0.1 undecidable manual P 137 10.878 133 0.3 96
IV.SMA1.EHZ. 2021-12-12T15:24:29.80 0.1 undecidable manual P 28 2.8971 164 0.49 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.000839 0.42 AML other m 2021-12-12T15:24:31.98
IV.SMA1.EHE. ML:1.9 0.00148 0.14 AML other m 2021-12-12T15:24:32.08
IV.CAMP.HHN. ML:1.4 0.0003285 0.2 AML other m 2021-12-12T15:24:32.65
IV.CAMP.HHE. ML:1.6 0.0005075 0.16 AML other m 2021-12-12T15:24:32.65
IV.MTRA.HNE. ML:2.2 0.0014399999999999999 1.9 AML other m 2021-12-12T15:24:33.95
IV.MTRA.EHE. ML:2.2 0.0014399999999999999 1.92 AML other m 2021-12-12T15:24:33.96
IV.MTRA.EHN. ML:2.1 0.0010385 1.9 AML other m 2021-12-12T15:24:34.00
IV.MTRA.HNN. ML:2.1 0.0009875 0.54 AML other m 2021-12-12T15:24:34.00
IV.LNSS.HNN. ML:1.4 0.00017491795 1.8464 AML other m 2021-12-12T15:24:35.94
IV.LNSS.HHE. ML:1.7 0.000306 0.14 AML other m 2021-12-12T15:24:36.07
IV.LNSS.HNE. ML:1.6 0.00027591245 0.1408 AML other m 2021-12-12T15:24:36.07
IV.TERO.HNE. ML:1.4 0.000161592445 0.0896 AML other m 2021-12-12T15:24:36.40
IV.TERO.HHN. ML:1.3 0.00011372444500000001 0.064 AML other m 2021-12-12T15:24:36.55
IV.LNSS.HHN. ML:1.5 0.00020400000000000003 1.32 AML other m 2021-12-12T15:24:36.02
IV.TERO.HNN. ML:1.5 0.00018145122 0.256 AML other m 2021-12-12T15:24:37.20
IV.GAVE.EHE. ML:1.8 0.00027850000000000005 1.82 AML other m 2021-12-12T15:24:39.03
IV.GAVE.EHN. ML:1.6 0.00014350000000000002 0.48 AML other m 2021-12-12T15:24:40.36
IV.FDMO.HHE. ML:1.1 0.000034045445 0.432 AML other m 2021-12-12T15:24:44.82
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