Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 24-11-2020 and time 22:24:34 (UTC) in region 4 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km E Norcia (PG), on

  • 24-11-2020 22:24:34 (UTC)
  • 24-11-2020 23:24:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.14 at 10 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.

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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
Norcia PG 4 4957 4957
Castelsantangelo sul Nera MC 13 281 5238
Arquata del Tronto AP 13 1178 6416
Cascia PG 13 3217 9633
Accumoli RI 13 667 10300
Preci PG 14 724 11024
Montegallo AP 17 523 11547
Visso MC 17 1107 12654
Ussita MC 18 444 13098
Cittareale RI 18 482 13580
Poggiodomo PG 19 117 13697
Cerreto di Spoleto PG 19 1075 14772
Montemonaco AP 20 604 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 2020-11-24
22:24:34		 42.78 13.14 11 2020-11-24
22:42:52		 Sala Sismica INGV-Roma 84992961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-24 22:24:34 ± 0.06
Latitude 42.78 ± 0.00
Longitude 13.14 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84992961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 353
Semi-minor axis of confidence ellipse (meter) 184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.54679
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 84992961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-24 22:42:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-11-24T22:24:54.46 0.6 undecidable manual S 357 0.5468 50 0.78 37
IV.SNTG.HHZ. 2020-11-24T22:24:52.09 0.3 undecidable manual S 343 0.4946 50 -0.04 70
IV.ASSB.HHZ. 2020-11-24T22:24:50.52 0.3 undecidable manual S 306 0.4398 50 0 71
IV.MOMA.HHZ. 2020-11-24T22:24:50.61 0.3 undecidable manual S 273 0.4218 50 0.63 61
IV.TERO.HHZ. 2020-11-24T22:24:48.38 0.3 undecidable manual S 115 0.3741 50 -0.18 70
IV.ARRO.EHZ. 2020-11-24T22:24:47.94 0.3 undecidable manual S 234 0.3453 50 0.22 70
IV.GUMA.HHZ. 2020-11-24T22:24:47.11 0.3 undecidable manual S 27 0.3121 50 0.38 68
IV.MF5.EHZ. 2020-11-24T22:24:47.19 0.3 undecidable manual S 48 0.3085 50 0.56 64
IV.CSP1.EHZ. 2020-11-24T22:24:46.53 0.3 undecidable manual S 8 0.3112 50 -0.18 71
IV.CAMP.HHZ. 2020-11-24T22:24:46.59 0.3 undecidable manual S 142 0.3148 50 -0.22 70
IV.CESI.HHZ. 2020-11-24T22:24:45.68 0.3 undecidable manual S 322 0.2824 50 -0.18 71
IV.SNTG.HHZ. 2020-11-24T22:24:45.32 0.1 undecidable manual P 343 0.4946 50 0.47 86
IV.EL6.EHZ. 2020-11-24T22:24:45.54 0.1 undecidable manual P 357 0.5468 50 -0.21 90
IT.MTCL.HGZ. 2020-11-24T22:24:44.02 0.3 undecidable manual S 333 0.2356 50 -0.44 68
IV.MNTT.EHZ. 2020-11-24T22:24:44.42 0.1 undecidable manual P 50 0.4317 50 0.64 81
IV.FDMO.HHZ. 2020-11-24T22:24:44.61 0.3 undecidable manual S 351 0.2563 50 -0.47 67
IV.ASSB.HHZ. 2020-11-24T22:24:43.64 0.1 undecidable manual P 306 0.4398 50 -0.28 90
IV.LNSS.HHZ. 2020-11-24T22:24:43.37 0.3 undecidable manual S 203 0.1961 116 0.08 74
IV.MOMA.HHZ. 2020-11-24T22:24:43.60 0.1 undecidable manual P 273 0.4218 50 -0.01 96
IV.SMA1.EHZ. 2020-11-24T22:24:43.36 0.3 undecidable manual S 137 0.2077 50 -0.28 71
IV.T1299.HNE. 2020-11-24T22:24:42.75 0.3 undecidable manual S 146 0.1799 118 0 75
IV.ARRO.EHZ. 2020-11-24T22:24:42.27 0.1 undecidable manual P 234 0.3453 50 -0.03 97
IV.FEMA.HNZ. 2020-11-24T22:24:42.95 0.3 undecidable manual S 339 0.1916 116 -0.18 72
IV.TERO.HHZ. 2020-11-24T22:24:42.54 0.1 undecidable manual P 115 0.3741 50 -0.25 92
IV.MMO1.EHN. 2020-11-24T22:24:42.36 0.3 undecidable manual S 49 0.1772 118 -0.28 71
IV.MTRA.EHZ. 2020-11-24T22:24:42.93 0.3 undecidable manual S 98 0.1871 117 -0.05 75
IV.CAMP.HHZ. 2020-11-24T22:24:41.61 0.1 undecidable manual P 142 0.3148 50 -0.17 95
IV.GUMA.HHZ. 2020-11-24T22:24:41.88 0.1 undecidable manual P 27 0.3121 50 0.15 95
IV.MF5.EHZ. 2020-11-24T22:24:41.99 0.1 undecidable manual P 48 0.3085 50 0.32 92
IV.CESI.HHZ. 2020-11-24T22:24:41.13 0.1 undecidable manual P 322 0.2824 50 -0.1 97
IV.MC2.EHZ. 2020-11-24T22:24:41.31 0.3 undecidable manual S 14 0.1322 126 0.15 74
IV.CSP1.EHZ. 2020-11-24T22:24:41.57 0.1 undecidable manual P 8 0.3112 50 -0.15 95
IV.FDMO.HHZ. 2020-11-24T22:24:40.60 0.1 undecidable manual P 351 0.2563 50 -0.18 96
IT.MTCL.HGZ. 2020-11-24T22:24:40.19 0.1 undecidable manual P 333 0.2356 50 -0.24 95
IV.MMO1.EHN. 2020-11-24T22:24:39.30 0.1 undecidable manual P 49 0.1772 118 -0.07 99
IV.MTRA.EHZ. 2020-11-24T22:24:39.43 0.1 positive manual P 98 0.1871 117 -0.14 98
IV.NRCA.HNZ. 2020-11-24T22:24:39.20 0.3 undecidable manual S 336 0.0549 150 0.08 76
IV.T1299.HNE. 2020-11-24T22:24:39.66 0.1 undecidable manual P 146 0.1799 118 0.22 96
IV.LNSS.HHZ. 2020-11-24T22:24:39.84 0.1 positive manual P 203 0.1961 116 0.1 98
IV.SMA1.EHZ. 2020-11-24T22:24:39.94 0.1 positive manual P 137 0.2077 50 -0.01 100
IV.FEMA.HNZ. 2020-11-24T22:24:39.25 0.1 undecidable manual P 339 0.1916 116 -0.41 92
IV.MC2.EHZ. 2020-11-24T22:24:38.73 0.1 positive manual P 14 0.1322 126 0.21 97
IV.NRCA.HNZ. 2020-11-24T22:24:37.61 0.1 negative manual P 336 0.0549 150 0.27 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:0.9 3.25E-5 1.14 AML other m 2020-11-24T22:24:49.16
IV.NRCA.HNN. ML:1.8 0.0010315 0.14 AML other m 2020-11-24T22:24:39.34
IV.NRCA.HHE. ML:1.8 0.00105 0.1 AML other m 2020-11-24T22:24:39.97
IV.NRCA.HNE. ML:1.8 0.000985 0.12 AML other m 2020-11-24T22:24:39.98
IV.LNSS.HHE. ML:1.5 0.0002365 0.26 AML other m 2020-11-24T22:24:43.72
IV.LNSS.HHN. ML:1.5 0.0001955 0.64 AML other m 2020-11-24T22:24:43.88
IV.MTRA.EHN. ML:1.2 0.0001245 0.5 AML other m 2020-11-24T22:24:43.96
IV.MTRA.EHE. ML:1.2 0.0001145 1.86 AML other m 2020-11-24T22:24:44.95
IV.CESI.HHN. ML:1.4 0.00010355 1.02 AML other m 2020-11-24T22:24:46.31
IV.CESI.HHE. ML:1.1 6.07E-5 1.08 AML other m 2020-11-24T22:24:46.87
IV.SMA1.EHN. ML:1 6.29E-5 1.14 AML other m 2020-11-24T22:24:46.36
IV.GUMA.HHE. ML:1.6 0.0001675 0.28 AML other m 2020-11-24T22:24:47.60
IV.GUMA.HHN. ML:1.5 0.0001205 0.58 AML other m 2020-11-24T22:24:47.69
IV.SMA1.EHE. ML:1 5.995E-5 0.4 AML other m 2020-11-24T22:24:47.93
IV.FDMO.HHN. ML:0.9 3.985E-5 0.76 AML other m 2020-11-24T22:24:48.02
IV.TERO.HHE. ML:1.1 3.8E-5 0.12 AML other m 2020-11-24T22:24:48.81
IV.FDMO.HHE. ML:0.8 3.11E-5 0.62 AML other m 2020-11-24T22:24:49.05
IV.ARRO.EHE. ML:1 3.455E-5 0.92 AML other m 2020-11-24T22:24:49.37
IV.TERO.HHN. ML:1.2 5.67E-5 0.78 AML other m 2020-11-24T22:24:49.41
IV.MTRA.HNE. ML:1.3 0.000130343545 0.2304 AML other m 2020-11-24T22:24:44.95
IV.MTRA.HNN. ML:1.1 8.352672E-5 0.2176 AML other m 2020-11-24T22:24:43.67
IV.LNSS.HNE. ML:1.5 0.0002045476 0.32 AML other m 2020-11-24T22:24:43.56
IV.LNSS.HNN. ML:1.3 0.000143265205 0.1152 AML other m 2020-11-24T22:24:44.39
IV.CSP1.EHE. ML:1.2 7.1466545E-5 0.1664 AML other m 2020-11-24T22:24:47.36
IV.CSP1.EHN. ML:1.3 7.257447E-5 0.1408 AML other m 2020-11-24T22:24:48.54
IV.GUMA.HNE. ML:1.4 0.00011011393 0.32 AML other m 2020-11-24T22:24:47.92
IV.MOMA.HHE. ML:1.2 5.2312875E-5 0.2432 AML other m 2020-11-24T22:24:51.99
IV.MOMA.HHN. ML:1 2.4965385E-5 0.1408 AML other m 2020-11-24T22:24:52.83
IV.ASSB.HHE. ML:1 2.5038493E-5 0.128 AML other m 2020-11-24T22:24:53.34
IV.ASSB.HHN. ML:0.9 2.1304705E-5 0.1536 AML other m 2020-11-24T22:24:52.36
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download