Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-10-2021 and time 07:28:46 (UTC) in region 5 km S Campello sul Clitunno (PG)

A magnitude ML 1.9 earthquake occured in region: 5 km S Campello sul Clitunno (PG), on

  • 01-10-2021 07:28:46 (UTC)
  • 01-10-2021 09:28:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 12.7690 at 8 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
Campello sul Clitunno PG 5 2442 2442
Spoleto PG 5 38218 40660
Sant'Anatolia di Narco PG 8 564 41224
Vallo di Nera PG 8 364 41588
Scheggino PG 9 461 42049
Castel Ritaldi PG 9 3278 45327
Trevi PG 11 8469 53796
Cerreto di Spoleto PG 13 1075 54871
Poggiodomo PG 16 117 54988
Montefalco PG 16 5679 60667
Giano dell'Umbria PG 17 3846 64513
Ferentillo TR 18 1913 66426
Sellano PG 18 1079 67505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
91 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 1.9 2021-10-01
07:28:46		 42.7793 12.7687 8 2022-03-30
13:04:19		 Bollettino Sismico Italiano INGV 98047371
Reviewed
Rev100 		ML 2.0 2021-10-01
07:28:46		 42.7732 12.7525 11 2021-10-01
07:36:48		 Sala Sismica INGV-Roma 96093371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-01 07:28:46 ± 0.05
Latitude 42.7793 ± 0.0027
Longitude 12.7687 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98047371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 247
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63312
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 98047371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-02 10:45:00

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 96093371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-01 07:36:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FAGN.HHZ. 2021-10-01T07:29:15.08 3.0 undecidable manual S 0.44 0
IV.TERO.HHZ. 2021-10-01T07:29:09.04 0.3 undecidable manual S 104 70.2741 50 0.35 65
IV.EL6.EHZ. 2021-10-01T07:29:08.45 0.3 undecidable manual S 24 66.6777 50 0.71 58
IV.MURB.HHZ. 2021-10-01T07:29:05.93 0.3 undecidable manual S 340 57.1983 50 0.74 58
IV.SMA1.EHZ. 2021-10-01T07:29:03.50 0.3 undecidable manual S 109 49.0176 50 0.48 65
IV.CSP1.EHZ. 2021-10-01T07:29:03.10 0.3 undecidable manual S 45 49.617 50 -0.06 71
IV.MTRA.EHZ. 2021-10-01T07:29:03.71 0.3 undecidable manual S 93 51.2154 50 0.12 70
IV.MMO1.EHZ. 2021-10-01T07:29:02.47 0.3 undecidable manual S 73 47.3193 50 -0.09 71
IV.RM33.EHZ. 2021-10-01T07:29:02.44 0.3 undecidable manual S 129 47.1195 50 -0.07 72
IV.MML1.EHZ. 2021-10-01T07:29:00.37 0.6 undecidable manual S 24 40.5261 50 -0.39 45
IV.MC2.EHZ. 2021-10-01T07:28:59.90 0.6 undecidable manual S 67 37.2294 50 0.05 49
IV.TERO.HHZ. 2021-10-01T07:28:59.27 0.3 undecidable manual P 104 70.2741 50 -0.14 68
IV.EL6.EHZ. 2021-10-01T07:28:58.78 0.3 undecidable manual P 24 66.6777 50 -0.08 69
IV.ASSB.HHZ. 2021-10-01T07:28:57.49 0.3 undecidable manual S 343 30.5472 104 -0.17 72
IV.SACS.HHZ. 2021-10-01T07:28:57.74 3.0 undecidable manual P -1.7 0
IV.MURB.HHZ. 2021-10-01T07:28:57.43 0.6 undecidable manual P 340 57.1983 50 0.04 47
IT.MTCL.HGZ. 2021-10-01T07:28:57.44 0.3 undecidable manual S 38 30.3474 104 -0.14 73
IV.MGAB.HHZ. 2021-10-01T07:28:57.19 0.3 undecidable manual P 286 55.4001 50 0.07 70
IV.NRCA.HHZ. 2021-10-01T07:28:57.11 0.3 undecidable manual S 78 28.749 105 0.04 74
IV.LNSS.HHZ. 2021-10-01T07:28:57.18 0.1 undecidable manual S 131 29.5482 105 -0.15 97
IV.MTRA.EHZ. 2021-10-01T07:28:56.19 0.1 undecidable manual P 93 51.2154 50 -0.28 91
IV.CESI.HHZ. 2021-10-01T07:28:56.74 0.6 undecidable manual S 24 27.3504 106 0.14 49
IV.SMA1.EHZ. 2021-10-01T07:28:56.02 0.1 negative manual P 109 49.0176 50 -0.12 94
IV.CSP1.EHZ. 2021-10-01T07:28:56.14 0.1 undecidable manual P 45 49.617 50 -0.08 95
IV.CESX.HHZ. 2021-10-01T07:28:55.18 0.6 undecidable manual S 218 24.0537 108 -0.32 47
IV.RM33.EHZ. 2021-10-01T07:28:55.42 0.1 undecidable manual P 129 47.1195 50 -0.42 89
IV.MMO1.EHZ. 2021-10-01T07:28:55.62 0.1 negative manual P 73 47.3193 50 -0.25 92
IV.ARRO.EHZ. 2021-10-01T07:28:55.22 0.3 undecidable manual S 181 22.1556 109 0.33 71
IV.MC2.EHZ. 2021-10-01T07:28:54.20 0.1 negative manual P 67 37.2294 50 -0.11 96
IV.MML1.EHZ. 2021-10-01T07:28:54.54 0.1 undecidable manual P 24 40.5261 50 -0.29 92
IV.MOMA.HHZ. 2021-10-01T07:28:53.02 0.3 undecidable manual S 280 16.3725 115 0 77
IT.MTCL.HGZ. 2021-10-01T07:28:53.00 0.1 undecidable manual P 38 30.3474 104 0 100
IV.LNSS.HHZ. 2021-10-01T07:28:52.71 0.1 negative manual P 131 29.5482 105 -0.14 97
IV.GAVE.EHZ. 2021-10-01T07:28:52.89 0.6 undecidable manual S 133 14.0748 119 0.59 45
IV.ASSB.HHZ. 2021-10-01T07:28:52.88 0.1 negative manual P 343 30.5472 104 -0.16 96
IV.CESI.HHZ. 2021-10-01T07:28:52.56 0.1 undecidable manual P 24 27.3504 106 0.13 98
IV.NRCA.HHZ. 2021-10-01T07:28:52.69 0.1 negative manual P 78 28.749 105 -0.01 100
IV.ARRO.EHZ. 2021-10-01T07:28:51.50 0.1 undecidable manual P 181 22.1556 109 0.06 100
IV.CESX.HHZ. 2021-10-01T07:28:51.58 0.1 negative manual P 218 24.0537 108 -0.22 97
IT.GNU.HGE. 2021-10-01T07:28:50.54 0.3 undecidable manual P 280 16.3725 115 0.18 74
IV.GAVE.EHZ. 2021-10-01T07:28:50.29 0.1 negative manual P 133 14.0748 119 0.34 96
IV.MOMA.HHZ. 2021-10-01T07:28:50.48 0.1 negative manual P 280 16.3725 115 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.9 0.0007749999999999999 0.2 AML other m 2021-10-01T07:28:53.56
IV.MOMA.HNN. ML:1.9 0.0007830000000000001 0.2 AML other m 2021-10-01T07:28:53.56
IV.MOMA.HNE. ML:2.5 0.002885 0.24 AML other m 2021-10-01T07:28:53.66
IV.MOMA.HHE. ML:2.5 0.003065 0.24 AML other m 2021-10-01T07:28:53.66
IV.GAVE.EHE. ML:2.1 0.0012900000000000001 0.94 AML other m 2021-10-01T07:28:53.72
IV.GAVE.HNE. ML:2.0 0.0012375 0.4 AML other m 2021-10-01T07:28:53.64
IV.GAVE.HNN. ML:1.5 0.0003695 0.44 AML other m 2021-10-01T07:28:55.11
IV.GAVE.EHN. ML:2.0 0.0011099999999999999 0.48 AML other m 2021-10-01T07:28:55.57
IV.ARRO.EHE. ML:1.6 0.000292 0.88 AML other m 2021-10-01T07:28:55.82
IV.CESI.HHN. ML:2.1 0.000771 1.76 AML other m 2021-10-01T07:28:56.90
IV.CESX.HHN. ML:2.0 0.0006255 0.28 AML other m 2021-10-01T07:28:57.06
IV.CESX.HHE. ML:1.8 0.0004035 1.3 AML other m 2021-10-01T07:28:57.81
IV.CESI.HHE. ML:1.6 0.0002445 0.18 AML other m 2021-10-01T07:28:57.36
IV.LNSS.HHE. ML:2.0 0.0005529999999999999 1 AML other m 2021-10-01T07:28:57.37
IV.NRCA.HHN. ML:1.9 0.0004575 0.3 AML other m 2021-10-01T07:28:57.87
IV.ASSB.HHN. ML:1.8 0.00027800000000000004 0.2 AML other m 2021-10-01T07:28:57.76
IV.ASSB.HHE. ML:1.8 0.00033099999999999997 0.22 AML other m 2021-10-01T07:28:57.85
IV.NRCA.HHE. ML:2.0 0.000532 0.16 AML other m 2021-10-01T07:28:58.49
IV.ARRO.EHN. ML:1.5 0.000224 0.22 AML other m 2021-10-01T07:28:58.72
IV.LNSS.HHN. ML:2.0 0.000565 0.14 AML other m 2021-10-01T07:28:58.82
IV.MML1.EHE. ML:1.8 0.00020250000000000002 0.2 AML other m 2021-10-01T07:29:01.15
IV.MML1.EHN. ML:1.7 0.000187 0.18 AML other m 2021-10-01T07:29:01.62
IV.RM33.EHN. ML:1.8 0.000195 1.76 AML other m 2021-10-01T07:29:04.89
IV.CSP1.EHN. ML:2.4 0.0006730000000000001 0.68 AML other m 2021-10-01T07:29:04.07
IV.RM33.EHE. ML:1.9 0.0002155 0.18 AML other m 2021-10-01T07:29:04.11
IV.CSP1.EHE. ML:2.4 0.000753 1.56 AML other m 2021-10-01T07:29:04.94
IV.MTRA.EHN. ML:1.9 0.00018449999999999999 0.62 AML other m 2021-10-01T07:29:04.20
IV.MTRA.EHE. ML:2.0 0.000261 0.64 AML other m 2021-10-01T07:29:04.49
IV.SMA1.EHN. ML:2.0 0.0002725 1 AML other m 2021-10-01T07:29:05.55
IV.SMA1.EHE. ML:2.1 0.00035350000000000003 1.74 AML other m 2021-10-01T07:29:06.07
IV.MURB.HHE. ML:2.2 0.0003105 0.96 AML other m 2021-10-01T07:29:06.45
IV.MURB.HHN. ML:2.1 0.000265 0.44 AML other m 2021-10-01T07:29:07.02
IV.MGAB.HHN. ML:1.7 0.00010435 0.88 AML other m 2021-10-01T07:29:09.53
IV.MGAB.HHE. ML:1.7 0.0001115 0.98 AML other m 2021-10-01T07:29:11.01
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
Waveforms Seismic signals in miniseed + resp format Download