Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 01-11-2021 and time 09:22:26 (Italy) in region 3 km NE Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Norcia (PG), on

  • 01-11-2021 08:22:26 (UTC)
  • 01-11-2021 09:22:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8220, 13.1100 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 4 4957 4957
Preci PG 9 724 5681
Castelsantangelo sul Nera MC 9 281 5962
Visso MC 12 1107 7069
Cascia PG 14 3217 10286
Ussita MC 14 444 10730
Cerreto di Spoleto PG 16 1075 11805
Arquata del Tronto AP 16 1178 12983
Sellano PG 17 1079 14062
Accumoli RI 18 667 14729
Montegallo AP 18 523 15252
Poggiodomo PG 19 117 15369
Montemonaco AP 20 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km W of Pescara (121014 inhabitants)
99 Km N of Tivoli (56533 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 1.5 2021-11-01
08:22:26		 42.8222 13.1097 10 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99406681
Reviewed
Rev100 		ML 1.4 2021-11-01
08:22:26		 42.8237 13.1038 10 2021-11-01
08:28:00		 Sala Sismica INGV-Roma 97136591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-01 08:22:26 ± 0.04
Latitude 42.8222 ± 0.0027
Longitude 13.1097 ± 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 99406681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 330
Semi-minor axis of confidence ellipse (meter) 15
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
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) 0.01169
Epicentral distance of station farthest from the epicenter (degree) 0.50722
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 97136591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-01 08:28:00

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 99406681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-06 11:27:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAMP.HHE. 2021-11-01T08:22:39.10 0.3 undecidable manual S 142 40.0266 50 -0.35 70
IV.MF5.EHZ. 2021-11-01T08:22:38.40 0.3 undecidable manual S 57 33.8439 50 0.6 66
IV.EL6.EHZ. 2021-11-01T08:22:36.15 0.6 undecidable manual P 359 56.2992 50 -0.14 47
IV.ATCC.EHZ. 2021-11-01T08:22:36.07 0.6 undecidable manual P 317 55.4001 50 -0.09 48
IV.SNTG.HHZ. 2021-11-01T08:22:35.29 0.6 undecidable manual P 344 49.9167 50 -0.03 49
IV.CESI.HHZ. 2021-11-01T08:22:35.20 0.6 undecidable manual S 321 26.2515 50 -0.56 45
IV.T1299.HNN. 2021-11-01T08:22:35.64 0.3 undecidable manual S 146 25.1526 112 0.19 74
IV.LNSS.HHZ. 2021-11-01T08:22:35.50 0.6 undecidable manual S 193 24.9528 112 0.11 50
IV.FDMO.HHZ. 2021-11-01T08:22:34.70 0.3 undecidable manual S 356 23.8539 113 -0.34 72
IV.ASSB.HHZ. 2021-11-01T08:22:34.26 0.6 undecidable manual P 304 44.0226 50 -0.15 48
IV.MNTP.HNZ. 2021-11-01T08:22:34.75 0.3 undecidable manual P 40 45.5211 50 0.11 73
IV.MTRA.EHZ. 2021-11-01T08:22:34.80 0.6 undecidable manual S 107 24.4533 112 -0.43 47
IV.MOMA.HHZ. 2021-11-01T08:22:34.72 0.6 undecidable manual P 268 43.9227 50 0.33 46
IV.MDAR.HNN. 2021-11-01T08:22:34.57 0.3 undecidable manual P 4 41.2254 50 0.6 65
IV.GAVE.EHZ. 2021-11-01T08:22:34.60 0.3 undecidable manual S 231 22.6551 114 -0.07 76
IV.TERO.HHZ. 2021-11-01T08:22:34.37 0.3 undecidable manual P 119 45.9207 50 -0.33 69
IV.ARRO.EHZ. 2021-11-01T08:22:33.52 0.3 undecidable manual P 226 38.9277 50 -0.09 74
IT.MTCL.HGZ. 2021-11-01T08:22:33.81 0.3 undecidable manual S 335 21.0678 115 -0.34 72
IT.FOPC.HGN. 2021-11-01T08:22:33.42 0.3 undecidable manual P 297 36.8298 50 0.12 74
IV.MMO1.EHZ. 2021-11-01T08:22:33.20 0.3 undecidable manual S 64 19.6692 117 -0.5 70
IV.RM33.EHZ. 2021-11-01T08:22:33.16 0.6 undecidable manual P 166 35.742 50 0.03 50
IV.CAMP.HHE. 2021-11-01T08:22:33.50 0.3 undecidable manual P 142 40.0266 50 -0.29 71
IV.MF5.EHZ. 2021-11-01T08:22:33.03 0.3 undecidable manual P 57 33.8439 50 0.19 73
IV.SAP2.EHE. 2021-11-01T08:22:33.89 0.3 undecidable manual P 38 38.4282 50 0.34 70
IV.CSP1.EHZ. 2021-11-01T08:22:32.29 0.3 undecidable manual P 14 30.9468 50 -0.09 75
IV.MML1.EHZ. 2021-11-01T08:22:32.76 0.6 undecidable manual P 341 34.2435 50 -0.13 49
IV.PF6.EHN. 2021-11-01T08:22:32.87 0.3 undecidable manual P 11 35.742 50 -0.25 72
IV.FEMA.HNE. 2021-11-01T08:22:32.72 0.3 undecidable manual S 343 16.2726 122 0.03 78
IV.GUMA.HNN. 2021-11-01T08:22:32.72 0.3 undecidable manual P 34 32.3454 50 0.11 74
IV.LNSS.HHZ. 2021-11-01T08:22:31.53 0.3 undecidable manual P 193 24.9528 112 0.08 76
IV.MTRA.EHZ. 2021-11-01T08:22:31.17 0.3 undecidable manual P 107 24.4533 112 -0.18 74
IV.MC2.EHZ. 2021-11-01T08:22:31.70 0.3 undecidable manual S 33 11.7771 130 0.26 75
IV.GAVE.EHZ. 2021-11-01T08:22:31.19 0.1 undecidable manual P 231 22.6551 114 0.16 100
IV.CESI.HHZ. 2021-11-01T08:22:31.60 0.3 undecidable manual P 321 26.2515 50 -0.06 76
IV.FDMO.HHZ. 2021-11-01T08:22:31.17 0.3 undecidable manual P 356 23.8539 113 -0.07 76
IV.T1299.HNN. 2021-11-01T08:22:31.57 0.3 undecidable manual P 146 25.1526 112 0.09 76
IV.MMO1.EHZ. 2021-11-01T08:22:30.40 0.3 undecidable manual P 64 19.6692 117 -0.07 77
IT.MTCL.HGZ. 2021-11-01T08:22:30.71 0.3 undecidable manual P 335 21.0678 115 -0.02 77
IV.FEMA.HNE. 2021-11-01T08:22:30.08 0.3 undecidable manual P 343 16.2726 122 0.19 75
IV.MC2.EHZ. 2021-11-01T08:22:29.47 0.1 undecidable manual P 33 11.7771 130 0.31 99
IV.NRCA.HNZ. 2021-11-01T08:22:29.50 0.3 undecidable manual S 16 1.2987 172 -0.06 79
IV.NRCA.HNZ. 2021-11-01T08:22:28.35 0.3 undecidable manual P 16 1.2987 172 0.27 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.6 0.00023947714999999998 0.1408 AML other m 2021-11-01T08:22:35.63
IV.MTRA.EHE. ML:1.7 0.0002873768 0.1984 AML other m 2021-11-01T08:22:35.96
IV.ASSB.HHN. ML:1.4 0.000072980015 0.0768 AML other m 2021-11-01T08:22:43.08
IV.ASSB.HHE. ML:1.4 0.00007916033 0.1408 AML other m 2021-11-01T08:22:41.11
IV.SNTG.HHN. ML:1.0 0.00002535 1.1 AML other m 2021-11-01T08:22:43.89
IV.SNTG.HHE. ML:0.9 0.000022070550049999997 0.2176 AML other m 2021-11-01T08:22:47.50
IV.NRCA.HNE. ML:2.4 0.005124491 0.16 AML other m 2021-11-01T08:22:29.72
IV.NRCA.HNN. ML:2.0 0.0018206485 0.128 AML other m 2021-11-01T08:22:30.20
IV.NRCA.HHN. ML:2.0 0.0020746045 0.064 AML other m 2021-11-01T08:22:29.72
IV.NRCA.HHE. ML:2.4 0.0053238925 0.16 AML other m 2021-11-01T08:22:29.72
IV.FDMO.HHN. ML:1.3 0.00012462835 0.1408 AML other m 2021-11-01T08:22:36.70
IV.GAVE.HNE. ML:1.8 0.00042155379999999997 0.1792 AML other m 2021-11-01T08:22:35.96
IV.EL6.EHE. ML:1.2 0.00003464077 0.1792 AML other m 2021-11-01T08:22:47.34
IV.GAVE.EHN. ML:1.7 0.00035344935 0.1984 AML other m 2021-11-01T08:22:35.50
IV.GAVE.EHE. ML:1.8 0.00042037184999999997 0.1856 AML other m 2021-11-01T08:22:35.96
IV.FDMO.HHE. ML:1.4 0.00014913595000000003 0.1216 AML other m 2021-11-01T08:22:35.26
IV.GAVE.HNN. ML:1.5 0.0001896485 0.2688 AML other m 2021-11-01T08:22:35.50
IV.MTRA.HNN. ML:1.6 0.00024026225000000002 0.1792 AML other m 2021-11-01T08:22:35.81
IV.MTRA.HNE. ML:1.7 0.00032400785 0.1856 AML other m 2021-11-01T08:22:35.95
IV.LNSS.HNE. ML:1.5 0.0001821375 0.1536 AML other m 2021-11-01T08:22:37.02
IV.LNSS.HHE. ML:1.6 0.00021033344999999998 0.1024 AML other m 2021-11-01T08:22:36.22
IV.LNSS.HNN. ML:1.5 0.00020253749999999998 0.1856 AML other m 2021-11-01T08:22:37.07
IV.LNSS.HHN. ML:1.6 0.00021502794999999998 0.1792 AML other m 2021-11-01T08:22:37.15
IV.CESI.HNE. ML:1.6 0.00023144445 0.16 AML other m 2021-11-01T08:22:35.67
IV.CESI.HNN. ML:2.6 0.002193099765 1.1712 AML other m 2021-11-01T08:22:33.55
IV.CESI.HHE. ML:1.6 0.00021482545 0.1792 AML other m 2021-11-01T08:22:35.66
IV.CESI.HHN. ML:1.8 0.00036373279999999997 0.2432 AML other m 2021-11-01T08:22:36.20
IV.CSP1.EHE. ML:1.7 0.0002219818 0.4032 AML other m 2021-11-01T08:22:39.90
IV.CSP1.EHN. ML:1.7 0.00022786039999999998 0.1792 AML other m 2021-11-01T08:22:36.92
IV.MML1.EHE. ML:1.2 0.00007121636 0.2368 AML other m 2021-11-01T08:22:41.56
IV.MML1.HNN. ML:1.4 0.000098683035 0.2432 AML other m 2021-11-01T08:22:40.41
IV.MML1.EHN. ML:1.3 0.00008330539 0.2176 AML other m 2021-11-01T08:22:40.29
IV.MML1.HNE. ML:1.5 0.00011769616999999999 0.4352 AML other m 2021-11-01T08:22:41.34
IV.MF5.EHN. ML:1.5 0.000123479695 0.3392 AML other m 2021-11-01T08:22:38.90
IV.MF5.EHE. ML:1.4 0.00010711279500000001 0.16 AML other m 2021-11-01T08:22:39.23
IV.RM33.EHN. ML:1.1 0.000047815115000000003 0.1408 AML other m 2021-11-01T08:22:40.16
IV.RM33.EHE. ML:1.2 0.000053096184999999994 0.1216 AML other m 2021-11-01T08:22:39.96
IV.TERO.HNE. ML:1.5 0.00009581858500000002 0.3008 AML other m 2021-11-01T08:22:44.52
IV.TERO.HHN. ML:1.3 0.000055441665 0.0768 AML other m 2021-11-01T08:22:43.03
IV.MOMA.HHN. ML:1.2 0.000048676455 0.16 AML other m 2021-11-01T08:22:44.92
IV.MOMA.HNE. ML:1.7 0.000146892155 0.192 AML other m 2021-11-01T08:22:42.66
IV.MOMA.HHE. ML:1.6 0.00012991255 0.1856 AML other m 2021-11-01T08:22:42.76
IV.ATCC.EHN. ML:1.4 0.000059913645 0.2368 AML other m 2021-11-01T08:22:45.83
IV.ATCC.EHE. ML:1.3 0.000042820885 0.1024 AML other m 2021-11-01T08:22:45.73
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