Earthquake with magnitude of ML 1.2 on date 23-11-2020 and time 23:50:47 (Italy) in region 1 km W Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 1 km W Amatrice (RI), on

  • 23-11-2020 22:50:47 (UTC)
  • 23-11-2020 23:50:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.633, 13.276 at 8 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 1 2657 2657
Accumoli RI 7 667 3324
Cittareale RI 10 482 3806
Campotosto AQ 11 542 4348
Montereale AQ 12 2581 6929
Capitignano AQ 13 665 7594
Arquata del Tronto AP 16 1178 8772
Borbona RI 18 617 9389
Acquasanta Terme AP 19 2916 12305
Posta RI 19 694 12999
Cortino TE 19 656 13655
Crognaleto TE 19 1297 14952
Cagnano Amiterno AQ 20 1369 16321

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2020-11-23
22:50:47
42.6328 13.2758 8 2020-11-23
23:01:37
Sala Sismica INGV-Roma 84971231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 22:50:47 ± 0.08
Latitude 42.6328 ± 0.0036
Longitude 13.2758 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84971231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 467
Semi-minor axis of confidence ellipse (meter) 375
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
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) 0.0054
Epicentral distance of station farthest from the epicenter (degree) 0.48923
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 84971231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 23:01:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-11-23T22:51:04.18 0.1 undecidable manual S 354 0.4614 50 0.17 89
IV.FDMO.HHZ. 2020-11-23T22:51:03.01 0.1 undecidable manual S 341 0.4263 50 0.04 92
IV.GUMA.HHZ. 2020-11-23T22:51:03.25 0.1 undecidable manual S 6 0.4317 50 0.12 90
IV.MF5.EHZ. 2020-11-23T22:51:02.05 0.1 undecidable manual S 21 0.3795 50 0.47 85
IV.ARRO.EHZ. 2020-11-23T22:51:00.69 0.1 undecidable manual S 262 0.3786 50 -0.87 72
IV.MC2.EHZ. 2020-11-23T22:50:59.41 0.3 undecidable manual S 347 0.286 104 0.97 53
MN.AQU.HHZ. 2020-11-23T22:50:59.13 0.3 undecidable manual S 161 0.2941 103 0.37 66
IV.MNTT.EHZ. 2020-11-23T22:50:57.33 0.1 undecidable manual P 29 0.4892 50 -0.01 91
IV.MMO1.EHZ. 2020-11-23T22:50:57.52 0.1 undecidable manual S 8 0.2689 104 -0.29 90
IV.TERO.HHZ. 2020-11-23T22:50:56.42 0.1 undecidable manual S 92 0.2419 106 -0.37 89
IV.GUMA.HHZ. 2020-11-23T22:50:56.45 0.1 undecidable manual P 6 0.4317 50 0.09 91
IV.NRCA.HHZ. 2020-11-23T22:50:56.26 0.1 undecidable manual S 329 0.2329 106 -0.22 92
IV.CSP1.EHZ. 2020-11-23T22:50:56.71 0.1 undecidable manual P 354 0.4614 50 -0.16 89
IV.MF5.EHZ. 2020-11-23T22:50:55.59 0.1 undecidable manual P 21 0.3795 50 0.13 91
IV.FDMO.HHZ. 2020-11-23T22:50:55.98 0.1 undecidable manual P 341 0.4263 50 -0.29 87
IV.ARRO.EHZ. 2020-11-23T22:50:55.41 0.1 undecidable manual P 262 0.3786 50 -0.05 93
IV.LNSS.HHZ. 2020-11-23T22:50:54.72 0.1 undecidable manual S 260 0.1754 111 0.33 91
MN.AQU.HHZ. 2020-11-23T22:50:54.69 0.3 undecidable manual P 161 0.2941 103 0.85 56
IV.MMO1.EHZ. 2020-11-23T22:50:53.13 0.1 undecidable manual P 8 0.2689 104 -0.16 93
IV.MTRA.HNZ. 2020-11-23T22:50:53.42 0.1 undecidable manual S 36 0.152 114 -0.14 95
IV.MC2.EHZ. 2020-11-23T22:50:53.56 0.3 undecidable manual P 347 0.286 104 -0.09 70
IV.NRCA.HHZ. 2020-11-23T22:50:52.50 0.1 undecidable manual P 329 0.2329 106 -0.02 96
IV.CAMP.HHZ. 2020-11-23T22:50:52.98 0.3 undecidable manual S 135 0.1376 117 -0.08 72
IV.TERO.HHZ. 2020-11-23T22:50:52.54 0.1 undecidable manual P 92 0.2419 106 -0.16 93
IV.LNSS.HHZ. 2020-11-23T22:50:51.47 0.1 positive manual P 260 0.1754 111 0.15 94
IV.MTRA.HNZ. 2020-11-23T22:50:50.89 0.1 undecidable manual P 36 0.152 114 0.05 97
IV.SMA1.EHZ. 2020-11-23T22:50:50.51 0.1 undecidable manual S 93 0.0441 148 0.24 95
IV.CAMP.HHZ. 2020-11-23T22:50:49.90 0.3 undecidable manual P 135 0.1376 117 -0.65 63
IV.SMA1.EHZ. 2020-11-23T22:50:49.34 0.1 undecidable manual P 93 0.0441 148 0.41 92
IV.T1299.HNZ. 2020-11-23T22:50:49.37 0.1 undecidable manual S 73 0.0054 176 -0.42 92
IV.T1299.HNZ. 2020-11-23T22:50:48.69 0.1 undecidable manual P 73 0.0054 176 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0 0.0038202645 0.1536 AML other m 2020-11-23T22:50:50.88
IV.SMA1.EHN. ML:0 0.0026661945 0.32 AML other m 2020-11-23T22:50:50.82
IV.LNSS.HNE. ML:1.2 0.00013759451 0.32 AML other m 2020-11-23T22:50:55.74
IV.LNSS.HHE. ML:1.1 9.9001525E-5 0.2048 AML other m 2020-11-23T22:50:55.33
IV.LNSS.HHN. ML:1.1 9.2735545E-5 0.1408 AML other m 2020-11-23T22:50:55.57
IV.NRCA.HNE. ML:1.4 0.00013554775 0.0896 AML other m 2020-11-23T22:50:56.88
IV.NRCA.HHE. ML:1.3 0.0001107781 0.1408 AML other m 2020-11-23T22:50:56.46
IV.NRCA.HHN. ML:1 5.837314E-5 0.1408 AML other m 2020-11-23T22:50:56.32
IV.TERO.HHE. ML:1.2 9.364851E-5 0.2944 AML other m 2020-11-23T22:50:56.69
IV.TERO.HHN. ML:1.3 0.000112668745 0.2816 AML other m 2020-11-23T22:50:56.65
IV.TERO.HNE. ML:1.4 0.0001267231925 0.3328 AML other m 2020-11-23T22:50:56.70
IV.TERO.HNN. ML:1.3 0.00010470085 0.5888 AML other m 2020-11-23T22:50:56.70
IV.ARRO.EHE. ML:0.5 1.15307715E-5 0.384 AML other m 2020-11-23T22:51:01.12
IV.ARRO.EHN. ML:0.7 1.44265815E-5 1.1008 AML other m 2020-11-23T22:51:01.49
IV.MF5.EHN. ML:1.1 4.02400805E-5 0.2176 AML other m 2020-11-23T22:51:02.49
IV.FDMO.HHN. ML:1 2.4725505E-5 0.2176 AML other m 2020-11-23T22:51:03.65
IV.GUMA.HHE. ML:1.4 7.007834E-5 0.3328 AML other m 2020-11-23T22:51:04.43
IV.GUMA.HHN. ML:1.2 4.1508415E-5 0.5376 AML other m 2020-11-23T22:51:03.93
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