Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 01-11-2021 and time 13:55:04 (Italy) in region 2 km NE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 2 km NE Norcia (PG), on

  • 01-11-2021 12:55:04 (UTC)
  • 01-11-2021 13:55:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8060, 13.1110 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
Norcia PG 2 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 11 281 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Ussita MC 16 444 10730
Arquata del Tronto AP 16 1178 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 17 667 13650
Sellano PG 18 1079 14729
Poggiodomo PG 18 117 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 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 1.2 2021-11-01
12:55:04		 42.806 13.111 10 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99407291
Reviewed
Rev100 		ML 1.4 2021-11-01
12:55:04		 42.8048 13.1052 11 2021-11-01
13:04:20		 Sala Sismica INGV-Roma 97142251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-01 12:55:04 ± 0.05
Latitude 42.8060 ± 0.0027
Longitude 13.1110 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99407291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 318
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 99407291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-06 12:00:22

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 97142251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-01 13:04:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-11-01T12:55:19.10 0.6 undecidable manual S 306 45.1215 50 -0.17 47
IV.MOMA.HNZ. 2021-11-01T12:55:19.85 0.3 undecidable manual S 270 44.0226 50 0.88 56
IV.TERO.HHZ. 2021-11-01T12:55:19.20 0.6 undecidable manual S 117 45.0216 50 -0.03 48
IV.MF5.EHZ. 2021-11-01T12:55:17.40 0.6 undecidable manual S 54 34.743 50 0.9 38
IV.MML1.EHZ. 2021-11-01T12:55:16.70 0.6 undecidable manual S 342 35.9418 50 -0.11 48
IV.RM33.EHZ. 2021-11-01T12:55:16.20 0.6 undecidable manual S 166 34.0437 50 -0.09 48
IV.CSP1.EHZ. 2021-11-01T12:55:15.80 0.6 undecidable manual S 13 32.6451 50 -0.12 48
IV.CESI.HHZ. 2021-11-01T12:55:14.30 0.6 undecidable manual S 323 27.75 50 -0.31 47
IV.FDMO.HHZ. 2021-11-01T12:55:13.60 0.6 undecidable manual S 356 25.6521 50 -0.46 45
IV.MOMA.HNZ. 2021-11-01T12:55:13.04 0.3 undecidable manual P 270 44.0226 50 0.17 70
IV.LNSS.HHZ. 2021-11-01T12:55:13.20 0.6 undecidable manual S 194 23.2545 113 -0.13 49
IV.T1299.HNN. 2021-11-01T12:55:13.60 0.6 undecidable manual S 144 23.6541 113 0.16 48
IV.MTRA.EHZ. 2021-11-01T12:55:13.30 0.6 undecidable manual S 103 23.8539 113 -0.23 48
IV.ASSB.HHZ. 2021-11-01T12:55:12.76 0.3 undecidable manual P 306 45.1215 50 -0.28 68
IV.GAVE.EHZ. 2021-11-01T12:55:12.70 0.6 undecidable manual S 235 21.6672 115 -0.14 49
IV.TERO.HHZ. 2021-11-01T12:55:12.70 0.1 undecidable manual P 117 45.0216 50 -0.32 90
IV.MMO1.HNN. 2021-11-01T12:55:12.30 0.6 undecidable manual S 59 20.3685 116 -0.12 49
IV.ARRO.EHZ. 2021-11-01T12:55:12.16 0.3 undecidable manual P 228 37.7289 50 0.26 69
IV.MF5.EHZ. 2021-11-01T12:55:11.74 0.1 undecidable manual P 54 34.743 50 0.29 92
IV.CSP1.EHZ. 2021-11-01T12:55:11.01 0.3 undecidable manual P 13 32.6451 50 -0.1 73
IV.MML1.EHZ. 2021-11-01T12:55:11.53 0.3 undecidable manual P 342 35.9418 50 -0.09 72
IV.FEMA.HNZ. 2021-11-01T12:55:11.60 0.6 undecidable manual S 344 18.0708 119 -0.1 50
IV.RM33.EHZ. 2021-11-01T12:55:11.25 0.3 undecidable manual P 166 34.0437 50 -0.07 73
IV.MC2.EHZ. 2021-11-01T12:55:10.70 0.6 undecidable manual S 28 13.2756 127 0.37 47
IV.CESI.HHZ. 2021-11-01T12:55:10.21 0.1 positive manual P 323 27.75 50 -0.14 97
IV.FDMO.HHZ. 2021-11-01T12:55:09.96 0.1 undecidable manual P 356 25.6521 50 -0.07 98
IV.LNSS.HHZ. 2021-11-01T12:55:09.60 0.1 undecidable manual P 194 23.2545 113 -0.01 100
IT.MTCL.HGZ. 2021-11-01T12:55:09.20 0.6 undecidable manual P 337 22.755 114 -0.32 47
IV.MMO1.HNN. 2021-11-01T12:55:09.20 0.3 undecidable manual P 59 20.3685 116 0.11 74
IV.MTRA.EHZ. 2021-11-01T12:55:09.52 0.1 undecidable manual P 103 23.8539 113 -0.21 96
IV.T1299.HNN. 2021-11-01T12:55:09.74 0.1 undecidable manual P 144 23.6541 113 0.06 99
IV.GAVE.EHZ. 2021-11-01T12:55:09.26 0.1 undecidable manual P 235 21.6672 115 -0.07 99
IV.MC2.EHZ. 2021-11-01T12:55:08.15 0.1 negative manual P 28 13.2756 127 0.27 96
IV.FEMA.HNZ. 2021-11-01T12:55:08.92 0.3 undecidable manual P 344 18.0708 119 0.25 72
IV.NRCA.HNZ. 2021-11-01T12:55:08.00 0.3 undecidable manual S 5 3.0969 163 -0.19 75
IV.NRCA.HNZ. 2021-11-01T12:55:06.83 0.1 negative manual P 5 3.0969 163 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.1 0.002480992 0.0832 AML other m 2021-11-01T12:55:08.20
IV.NRCA.HNE. ML:2.1 0.0023702385 0.0768 AML other m 2021-11-01T12:55:08.20
IV.NRCA.HNN. ML:1.7 0.0009424999999999999 0.08 AML other m 2021-11-01T12:55:08.23
IV.NRCA.HHN. ML:1.8 0.0010868535000000002 0.0768 AML other m 2021-11-01T12:55:08.23
IV.LNSS.HHN. ML:1.3 0.00012194576499999999 0.1152 AML other m 2021-11-01T12:55:13.96
IV.GAVE.EHE. ML:1.4 0.00018099999999999998 0.14 AML other m 2021-11-01T12:55:13.48
IV.MTRA.EHN. ML:1.1 0.00007204432 0.1792 AML other m 2021-11-01T12:55:13.77
IV.GAVE.EHN. ML:1.3 0.00014644000000000001 0.2176 AML other m 2021-11-01T12:55:13.72
IV.LNSS.HHE. ML:1.4 0.00015999999999999999 0.12 AML other m 2021-11-01T12:55:13.91
IV.MTRA.EHE. ML:1.1 0.00007784434 0.16 AML other m 2021-11-01T12:55:13.85
IV.FDMO.HHN. ML:1.1 0.000067228895 0.2048 AML other m 2021-11-01T12:55:14.36
IV.FDMO.HHE. ML:1.0 0.0000561 0.12 AML other m 2021-11-01T12:55:14.45
IV.CESI.HHE. ML:0.9 0.000040149728499999994 0.1216 AML other m 2021-11-01T12:55:15.84
IV.CESI.HHN. ML:1.1 0.00006274692 0.0768 AML other m 2021-11-01T12:55:14.75
IV.TERO.HHN. ML:1.1 0.0000392 0.06 AML other m 2021-11-01T12:55:19.71
IV.GAVE.HNE. ML:1.4 0.00018090885000000002 0.1792 AML other m 2021-11-01T12:55:13.47
IV.GAVE.HNN. ML:1.3 0.00013763115 0.9216 AML other m 2021-11-01T12:55:11.47
IV.MTRA.HNN. ML:1.0 0.00006556084000000001 0.16 AML other m 2021-11-01T12:55:14.31
IV.LNSS.HNE. ML:1.3 0.000130498635 0.128 AML other m 2021-11-01T12:55:13.97
IV.LNSS.HNN. ML:1.3 0.000118682435 0.1088 AML other m 2021-11-01T12:55:13.85
IV.CSP1.EHE. ML:1.5 0.00014050744999999997 0.3584 AML other m 2021-11-01T12:55:16.59
IV.CSP1.EHN. ML:1.3 0.000091000805 0.2176 AML other m 2021-11-01T12:55:16.10
IV.RM33.EHE. ML:1.0 0.000046913915 0.1216 AML other m 2021-11-01T12:55:17.44
IV.RM33.EHN. ML:0.9 0.000029317234999999997 0.096 AML other m 2021-11-01T12:55:17.27
IV.MML1.EHE. ML:0.9 0.000028659435 0.1984 AML other m 2021-11-01T12:55:17.51
IV.MML1.EHN. ML:0.7 0.000021756064999999998 0.2368 AML other m 2021-11-01T12:55:17.07
IV.ARRO.EHN. ML:1.0 0.00003257975 0.2752 AML other m 2021-11-01T12:55:18.50
IV.ARRO.EHE. ML:0.7 0.000018128306 0.2176 AML other m 2021-11-01T12:55:20.33
IV.ASSB.HHN. ML:0.7 0.000014127188000000001 0.1344 AML other m 2021-11-01T12:55:21.14
IV.ASSB.HHE. ML:0.9 0.000023184360000000002 0.1984 AML other m 2021-11-01T12:55:20.77
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