Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 01-11-2021 and time 10:23:37 (Italy) in region 7 km W Nocera Umbra (PG)

A magnitude ML 1.6 earthquake occured in region: 7 km W Nocera Umbra (PG), on

  • 01-11-2021 09:23:37 (UTC)
  • 01-11-2021 10:23:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1260, 12.7080 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
Nocera Umbra PG 7 5839 5839
Valtopina PG 8 1398 7237
Valfabbrica PG 9 3389 10626
Assisi PG 10 28299 38925
Gualdo Tadino PG 13 15208 54133
Bastia Umbra PG 14 21874 76007
Spello PG 15 8645 84652
Cannara PG 18 4305 88957
Foligno PG 19 57155 146112
Fossato di Vico PG 19 2840 148952
Fiuminata MC 20 1402 150354
Sefro MC 20 422 150776

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Foligno (57155 inhabitants)
26 Km E of Perugia (166134 inhabitants)
63 Km N of Terni (111501 inhabitants)
77 Km E of Arezzo (99543 inhabitants)
84 Km SW of Fano (60888 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
89 Km S of Pesaro (94582 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
96 Km NW of Teramo (54892 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 1.6 2021-11-01
09:23:37		 43.126 12.7082 10 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99407111
Reviewed
Rev100 		ML 1.6 2021-11-01
09:23:37		 43.1228 12.709 10 2021-11-01
09:32:22		 Sala Sismica INGV-Roma 97138081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-01 09:23:37 ± 0.04
Latitude 43.1260 ± 0.0018
Longitude 12.7082 ± 0.0025
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 99407111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 246
Semi-minor axis of confidence ellipse (meter) 100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 70
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.57736
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 43
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 99407111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-06 13:06:53

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 97138081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-01 09:32:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2021-11-01T09:23:57.50 0.6 undecidable manual S 291 64.0914 50 0.52 42
IV.MPAG.EHZ. 2021-11-01T09:23:55.10 0.6 undecidable manual S 4 55.9995 50 0.28 45
IV.PIEI.HHZ. 2021-11-01T09:23:53.20 0.6 undecidable manual S 343 47.5191 50 0.63 42
IV.GAVE.EHZ. 2021-11-01T09:23:53.60 0.6 undecidable manual S 163 50.4162 50 0.26 46
IV.CING.HHZ. 2021-11-01T09:23:53.30 0.3 undecidable manual S 55 48.1185 50 0.57 64
IV.NRCA.HHZ. 2021-11-01T09:23:52.40 0.3 undecidable manual S 134 46.2204 50 0.17 71
IV.ARVD.HHZ. 2021-11-01T09:23:52.20 0.3 undecidable manual S 24 45.3213 50 0.21 71
IV.CSP1.EHZ. 2021-11-01T09:23:51.00 0.3 undecidable manual S 95 40.4262 50 0.34 69
IV.EL6.EHZ. 2021-11-01T09:23:50.70 0.3 undecidable manual S 55 39.0276 50 0.41 68
IV.SSFR.HHZ. 2021-11-01T09:23:49.00 0.3 undecidable manual S 10 34.9428 50 -0.2 72
IV.FEMA.HNE. 2021-11-01T09:23:49.00 0.3 undecidable manual S 123 33.1446 50 0.28 71
IV.ATVO.HHZ. 2021-11-01T09:23:49.70 0.3 undecidable manual S 319 37.4292 50 -0.17 72
IV.MOMA.HHZ. 2021-11-01T09:23:49.70 0.6 undecidable manual S 197 37.4292 50 -0.18 48
IV.MF5.EHZ. 2021-11-01T09:23:48.74 0.3 undecidable manual P 104 62.7927 50 0.31 67
IV.FDMO.HHZ. 2021-11-01T09:23:48.30 0.3 undecidable manual S 108 32.2455 50 -0.2 72
IV.BADI.EHE. 2021-11-01T09:23:48.16 0.6 undecidable manual P 319 56.6988 50 0.68 40
IV.ATLO.EHE. 2021-11-01T09:23:48.00 0.3 undecidable manual S 311 32.1456 50 -0.45 69
IV.ATSC.EHE. 2021-11-01T09:23:48.62 0.3 undecidable manual S 357 33.1446 50 -0.09 74
IV.CAFI.HHZ. 2021-11-01T09:23:48.29 0.6 undecidable manual P 291 64.0914 50 -0.33 44
IV.MGAB.HHZ. 2021-11-01T09:23:47.15 0.3 undecidable manual P 244 53.8017 50 0.1 71
IT.MTCL.HGZ. 2021-11-01T09:23:47.40 0.3 undecidable manual S 122 27.75 50 0.1 74
IV.MPAG.EHZ. 2021-11-01T09:23:47.21 0.3 undecidable manual P 4 55.9995 50 -0.16 70
IV.APEC.HNN. 2021-11-01T09:23:47.23 0.6 undecidable manual P 334 53.3022 50 0.27 46
IV.ATFO.HHZ. 2021-11-01T09:23:47.70 0.3 undecidable manual S 338 28.8489 50 0.11 74
IV.GAVE.EHZ. 2021-11-01T09:23:46.42 0.3 undecidable manual P 163 50.4162 50 -0.1 72
IV.CING.HHZ. 2021-11-01T09:23:46.11 0.3 undecidable manual P 55 48.1185 50 -0.06 73
IV.ATBU.EHZ. 2021-11-01T09:23:45.13 0.6 undecidable manual P 342 40.9257 50 0.08 49
IV.SNTG.HHZ. 2021-11-01T09:23:45.80 0.3 undecidable manual S 53 23.6541 113 -0.32 72
IV.MC2.EHZ. 2021-11-01T09:23:45.98 0.3 undecidable manual P 121 45.7209 50 0.19 71
IV.CESI.HHZ. 2021-11-01T09:23:45.10 0.3 undecidable manual S 130 20.868 116 -0.13 75
IV.ATPI.EHE. 2021-11-01T09:23:45.58 0.3 undecidable manual P 326 43.623 50 0.1 72
IV.FRON.EHZ. 2021-11-01T09:23:45.20 0.3 undecidable manual P 2 43.5231 50 -0.25 70
IV.MURB.HHZ. 2021-11-01T09:23:45.60 0.3 undecidable manual S 316 21.2676 115 0.24 73
IV.ATPC.HHE. 2021-11-01T09:23:45.91 0.3 undecidable manual P 333 44.2224 50 0.34 69
IV.ARVD.HHZ. 2021-11-01T09:23:45.48 0.3 undecidable manual P 24 45.3213 50 -0.26 70
IV.PIEI.HHZ. 2021-11-01T09:23:45.85 0.3 undecidable manual P 343 47.5191 50 -0.22 70
IV.MML1.EHZ. 2021-11-01T09:23:45.30 0.3 undecidable manual S 94 21.3675 115 -0.11 75
IV.NRCA.HHZ. 2021-11-01T09:23:45.74 0.3 undecidable manual P 134 46.2204 50 -0.14 72
IV.TB02.DHZ.01 2021-11-01T09:23:44.17 0.3 undecidable manual P 318 36.3414 50 -0.17 72
IV.MDAR.HNN. 2021-11-01T09:23:44.30 0.3 undecidable manual P 78 35.9418 50 0.01 75
IV.TB03.DHZ.01 2021-11-01T09:23:44.70 0.3 undecidable manual P 322 38.8278 50 -0.04 74
IV.ATVA.EHE. 2021-11-01T09:23:44.47 0.3 undecidable manual P 296 38.1285 50 -0.16 72
IV.TB01.DHZ.01 2021-11-01T09:23:44.17 0.3 undecidable manual P 322 35.9418 50 -0.11 73
IV.SEF1.HNN. 2021-11-01T09:23:44.60 0.3 undecidable manual S 83 19.5693 117 -0.23 74
IV.MOMA.HHZ. 2021-11-01T09:23:44.34 0.3 undecidable manual P 197 37.4292 50 -0.18 72
IV.EL6.EHZ. 2021-11-01T09:23:44.67 0.3 undecidable manual P 55 39.0276 50 -0.09 73
IV.FOSV.EHZ. 2021-11-01T09:23:44.70 0.6 undecidable manual S 13 19.1697 118 -0.03 51
IV.ATVO.HHZ. 2021-11-01T09:23:44.27 0.3 undecidable manual P 319 37.4292 50 -0.25 71
IV.CSP1.EHZ. 2021-11-01T09:23:44.89 0.3 undecidable manual P 95 40.4262 50 -0.08 73
IT.FOPC.HGN. 2021-11-01T09:23:44.40 0.3 undecidable manual S 181 17.3715 120 0.23 74
IV.PF6.EHN. 2021-11-01T09:23:44.55 0.3 undecidable manual P 88 39.3273 50 -0.27 71
IV.ATFO.HHZ. 2021-11-01T09:23:43.05 0.3 undecidable manual P 338 28.8489 50 -0.15 74
IV.ATLO.EHE. 2021-11-01T09:23:43.50 0.3 undecidable manual P 311 32.1456 50 -0.2 72
IV.FEMA.HNE. 2021-11-01T09:23:43.53 0.3 undecidable manual P 123 33.1446 50 -0.32 70
IT.MTCL.HGZ. 2021-11-01T09:23:43.46 0.3 undecidable manual P 122 27.75 50 0.43 69
IT.GNU.HGE. 2021-11-01T09:23:43.76 0.6 undecidable manual P 197 37.4292 50 -0.76 40
IV.SSFR.HHZ. 2021-11-01T09:23:43.93 0.3 undecidable manual P 10 34.9428 50 -0.2 72
IV.FDMO.HHZ. 2021-11-01T09:23:43.50 0.3 undecidable manual P 108 32.2455 50 -0.22 72
IV.ATSC.EHE. 2021-11-01T09:23:43.66 0.3 undecidable manual P 357 33.1446 50 -0.19 72
IV.MURB.HHZ. 2021-11-01T09:23:42.04 0.1 undecidable manual P 316 21.2676 115 0.12 100
IV.ATCC.EHZ. 2021-11-01T09:23:42.10 0.3 undecidable manual S 320 8.5803 140 0.3 74
IV.ASSB.HHN. 2021-11-01T09:23:42.10 0.3 undecidable manual S 203 10.0788 135 -0.05 78
IV.SNTG.HHZ. 2021-11-01T09:23:42.37 0.3 undecidable manual P 53 23.6541 113 0.02 76
IV.FOSV.EHZ. 2021-11-01T09:23:41.48 0.3 undecidable manual P 13 19.1697 118 -0.07 76
IV.MML1.EHZ. 2021-11-01T09:23:41.90 0.3 undecidable manual P 94 21.3675 115 -0.04 76
IV.SEF1.HNN. 2021-11-01T09:23:41.57 0.6 undecidable manual P 83 19.5693 117 -0.04 51
IV.CESI.HHZ. 2021-11-01T09:23:41.71 0.3 undecidable manual P 130 20.868 116 -0.13 75
IT.FOPC.HGN. 2021-11-01T09:23:41.36 0.3 undecidable manual P 181 17.3715 120 0.14 75
IV.ASSB.HHN. 2021-11-01T09:23:40.30 0.3 undecidable manual P 203 10.0788 135 0.24 75
IV.ATCC.EHZ. 2021-11-01T09:23:40.15 0.3 undecidable manual P 320 8.5803 140 0.29 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:1.9 0.001142 0.18 AML other m 2021-11-01T09:23:42.62
IV.ATCC.EHN. ML:2.0 0.001325 0.32 AML other m 2021-11-01T09:23:42.48
IV.FOSV.EHE. ML:1.5 0.000223 1.76 AML other m 2021-11-01T09:23:45.00
IV.FOSV.EHN. ML:1.4 0.000177 0.74 AML other m 2021-11-01T09:23:45.12
IV.CESI.HHE. ML:1.3 0.0001305 0.16 AML other m 2021-11-01T09:23:45.55
IV.MML1.HNN. ML:1.9 0.000519 1.08 AML other m 2021-11-01T09:23:45.60
IV.MML1.EHN. ML:1.8 0.000477 1.08 AML other m 2021-11-01T09:23:45.60
IV.MML1.EHE. ML:1.6 0.000295 0.24 AML other m 2021-11-01T09:23:45.81
IV.MML1.HNE. ML:1.6 0.00029000000000000006 0.24 AML other m 2021-11-01T09:23:45.81
IV.CESI.HHN. ML:1.2 0.00011905 0.34 AML other m 2021-11-01T09:23:45.64
IV.MURB.HHN. ML:1.8 0.00046899999999999996 0.22 AML other m 2021-11-01T09:23:46.49
IV.SNTG.HHE. ML:1.5 0.000187 0.92 AML other m 2021-11-01T09:23:46.26
IV.SNTG.HHN. ML:1.4 0.000164 0.62 AML other m 2021-11-01T09:23:46.87
IV.MURB.HNN. ML:1.8 0.00040149999999999995 0.5 AML other m 2021-11-01T09:23:47.49
IV.ATFO.HHN. ML:1.1 0.000060299999999999995 0.34 AML other m 2021-11-01T09:23:48.38
IV.FDMO.HHN. ML:1.4 0.00011085 0.26 AML other m 2021-11-01T09:23:48.73
IV.ATFO.HHE. ML:1.3 0.00009625000000000001 0.34 AML other m 2021-11-01T09:23:48.51
IV.MURB.HHE. ML:1.8 0.00043 0.22 AML other m 2021-11-01T09:23:48.87
IV.FDMO.HHE. ML:1.5 0.0001325 1.48 AML other m 2021-11-01T09:23:49.74
IV.MURB.HNE. ML:1.8 0.00042200000000000007 0.22 AML other m 2021-11-01T09:23:49.76
IV.MOMA.HHN. ML:1.2 0.000058450000000000005 0.26 AML other m 2021-11-01T09:23:50.06
IV.SSFR.HHN. ML:1.7 0.0001835 0.12 AML other m 2021-11-01T09:23:50.80
IV.SSFR.HHE. ML:1.7 0.000183 0.16 AML other m 2021-11-01T09:23:50.90
IV.SSFR.HNE. ML:1.8 0.0002785 1.32 AML other m 2021-11-01T09:23:51.68
IV.EL6.EHN. ML:1.8 0.00024050000000000002 0.14 AML other m 2021-11-01T09:23:51.05
IV.SSFR.HNN. ML:1.9 0.000288 0.74 AML other m 2021-11-01T09:23:51.53
IV.EL6.EHE. ML:2.0 0.0003305 0.52 AML other m 2021-11-01T09:23:51.16
IV.CSP1.EHN. ML:1.9 0.000258 0.12 AML other m 2021-11-01T09:23:51.74
IV.CSP1.EHE. ML:2.0 0.000302 0.36 AML other m 2021-11-01T09:23:51.80
IV.ARVD.HHE. ML:1.1 0.0000348 1.12 AML other m 2021-11-01T09:23:52.40
IV.ARVD.HHN. ML:1.2 0.000043349999999999997 1.78 AML other m 2021-11-01T09:23:52.97
IV.MOMA.HHE. ML:1.3 0.0000701 1.7 AML other m 2021-11-01T09:23:52.14
IV.NRCA.HHN. ML:1.5 0.000102 0.1 AML other m 2021-11-01T09:23:53.05
IV.NRCA.HHE. ML:1.4 0.00008175000000000001 0.1 AML other m 2021-11-01T09:23:53.25
IV.CING.HHE. ML:1.2 0.00004315 0.4 AML other m 2021-11-01T09:23:53.91
IV.CING.HHN. ML:1.4 0.00006415 0.64 AML other m 2021-11-01T09:23:53.98
IV.PIEI.HHE. ML:1.2 0.00003965 0.14 AML other m 2021-11-01T09:23:54.23
IV.GAVE.EHE. ML:1.6 0.000115 0.48 AML other m 2021-11-01T09:23:54.54
IV.GAVE.EHN. ML:1.6 0.00009745000000000001 0.22 AML other m 2021-11-01T09:23:54.73
IV.PIEI.HHN. ML:0.9 0.000020799999999999997 0.92 AML other m 2021-11-01T09:23:56.24
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