Earthquake with magnitude of ML 1.6 on date 08-09-2021 and time 17:46:35 (UTC) in region 4 km SW Campello sul Clitunno (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km SW Campello sul Clitunno (PG), on

  • 08-09-2021 17:46:35 (UTC)
  • 08-09-2021 19:46:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.795, 12.744 at 8 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.

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 4 2442 2442
Castel Ritaldi PG 7 3278 5720
Spoleto PG 7 38218 43938
Trevi PG 9 8469 52407
Vallo di Nera PG 10 364 52771
Sant'Anatolia di Narco PG 10 564 53335
Scheggino PG 12 461 53796
Montefalco PG 13 5679 59475
Giano dell'Umbria PG 14 3846 63321
Cerreto di Spoleto PG 14 1075 64396
Poggiodomo PG 18 117 64513
Massa Martana PG 18 3770 68283
Sellano PG 18 1079 69362
Foligno PG 18 57155 126517
Bevagna PG 19 5081 131598
Ferentillo TR 20 1913 133511
Acquasparta TR 20 4778 138289
Gualdo Cattaneo PG 20 6155 144444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km S of Foligno (57155 inhabitants)
27 Km NE of Terni (111501 inhabitants)
45 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.6 2021-09-08
17:46:35
42.7948 12.7442 8 2021-09-08
17:55:27
Sala Sismica INGV-Roma 95206571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-08 17:46:35 ± 0.06
Latitude 42.7948 ± 0.0036
Longitude 12.7442 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95206571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 358
Semi-minor axis of confidence ellipse (meter) 277
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 21
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
Epicentral distance of station farthest from the epicenter (degree) 0.47754
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 95206571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-08 17:55:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CET2.HHZ. 2021-09-08T17:48:25.53 3.0 undecidable manual Sg 9.18 0
IV.SENA.HHZ. 2021-09-08T17:47:46.79 3.0 undecidable manual Sn -9.99 0
IV.MSSA.HHZ. 2021-09-08T17:47:45.82 3.0 undecidable manual Sn -4.24 0
TV.SU26.HHZ. 2021-09-08T17:47:42.35 3.0 undecidable manual Pg 0.32 0
MN.BNI.HHZ. 2021-09-08T17:47:41.03 3.0 negative manual Pn -4.43 0
IV.MILN.HNZ. 2021-09-08T17:47:41.55 3.0 negative manual Pg 12.57 0
IV.ESCV.HHZ. 2021-09-08T17:47:38.37 3.0 undecidable manual Pn -8.99 0
OT.OT16.EHZ. 2021-09-08T17:47:26.72 3.0 undecidable manual Sn -1.74 0
IV.IMOL.HNZ. 2021-09-08T17:47:26.90 3.0 undecidable manual Sg 1.39 0
IV.TST02.HHZ. 2021-09-08T17:47:22.63 3.0 undecidable manual Sg 8.64 0
IV.TST01.HHZ. 2021-09-08T17:47:20.55 3.0 undecidable manual Sg 3.48 0
IV.MRLC.HHZ. 2021-09-08T17:47:16.05 3.0 undecidable manual Pg 0.82 0
IV.PE3.EHZ. 2021-09-08T17:47:12.14 3.0 undecidable manual Sg 5.87 0
OT.OT13.EHZ. 2021-09-08T17:47:12.56 3.0 positive manual Pn -1.07 0
IX.NSC3.EHZ.02 2021-09-08T17:47:11.42 3.0 undecidable manual Pn -0.2 0
IX.RSF3.HHZ.02 2021-09-08T17:47:11.32 3.0 undecidable manual Pg 0.42 0
IV.PCRO.HNZ. 2021-09-08T17:47:09.26 3.0 undecidable manual Sn 1.3 0
IV.NARO.HHZ. 2021-09-08T17:47:02.54 3.0 undecidable manual Sn -1.5 0
IV.EL6.EHZ. 2021-09-08T17:46:57.37 3.0 undecidable manual Sn -1.12 0
IV.CERT.HHZ. 2021-09-08T17:46:54.53 3.0 undecidable manual Sn -2.78 0
IV.ATCC.EHZ. 2021-09-08T17:46:51.04 0.3 undecidable manual S 349 0.3975 50 0.42 66
IV.ARVD.HHZ. 2021-09-08T17:46:49.16 3.0 undecidable manual Pg 0.1 0
IV.MML1.EHZ. 2021-09-08T17:46:49.81 0.3 undecidable manual S 28 0.3597 50 0.32 68
IV.FDMO.HHZ. 2021-09-08T17:46:49.27 0.3 undecidable manual S 46 0.348 50 0.1 72
IV.LNSS.HHZ. 2021-09-08T17:46:47.08 0.3 undecidable manual S 131 0.2905 104 -0.12 72
IV.EL6.EHZ. 2021-09-08T17:46:47.68 3.0 negative manual Pg 0.36 0
IV.NRCA.HHZ. 2021-09-08T17:46:46.72 0.3 undecidable manual S 82 0.2743 105 0.12 73
IV.ASSB.HHZ. 2021-09-08T17:46:46.09 0.3 undecidable manual S 346 0.2554 106 0.19 72
IV.CESI.HHZ. 2021-09-08T17:46:45.54 0.3 undecidable manual S 29 0.2401 107 0.19 72
IV.MGAB.HHZ. 2021-09-08T17:46:45.81 0.3 undecidable manual P 284 0.4775 50 0.13 70
IV.PE3.EHZ. 2021-09-08T17:46:45.02 3.0 undecidable manual Pn -6.67 0
IV.CESX.HHZ. 2021-09-08T17:46:44.92 0.3 undecidable manual S 212 0.2194 108 0.35 70
IV.CSP1.EHZ. 2021-09-08T17:46:44.99 3.0 positive manual Pn -0.07 0
IV.ATCC.EHZ. 2021-09-08T17:46:44.08 0.1 undecidable manual P 349 0.3975 50 -0.23 92
IV.TOLF.HHZ. 2021-09-08T17:46:44.39 3.0 negative manual Pg -3.15 0
IV.FDMO.HHZ. 2021-09-08T17:46:43.10 0.1 undecidable manual P 46 0.348 50 -0.37 91
IV.MML1.EHZ. 2021-09-08T17:46:43.48 0.1 undecidable manual P 28 0.3597 50 -0.17 94
IV.MC2.EHZ. 2021-09-08T17:46:43.68 3.0 positive manual Pn 0.39 0
IV.GAVE.EHZ. 2021-09-08T17:46:42.48 0.3 undecidable manual S 133 0.1502 115 0.37 71
IV.LNSS.HHZ. 2021-09-08T17:46:41.98 0.1 undecidable manual P 131 0.2905 104 -0.35 92
IV.ASSB.HHZ. 2021-09-08T17:46:41.33 0.1 undecidable manual P 346 0.2554 106 -0.26 94
IV.MOMA.HHZ. 2021-09-08T17:46:41.25 0.3 undecidable manual S 274 0.1277 119 -0.08 75
IV.CESI.HHZ. 2021-09-08T17:46:41.30 0.1 undecidable manual P 29 0.2401 107 0.03 99
IV.SAMA.EHZ. 2021-09-08T17:46:41.09 3.0 undecidable manual P -7.52 0
IV.NRCA.HHZ. 2021-09-08T17:46:41.76 0.1 undecidable manual P 82 0.2743 105 -0.23 95
IV.CESX.HHZ. 2021-09-08T17:46:40.83 0.1 undecidable manual P 212 0.2194 108 0.01 100
IV.GAVE.EHZ. 2021-09-08T17:46:39.60 0.1 undecidable manual P 133 0.1502 115 0.21 97
IV.MOMA.HHZ. 2021-09-08T17:46:38.81 0.1 undecidable manual P 274 0.1277 119 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.8 0.0006065 0.5 AML other m 2021-09-08T17:46:41.51
IV.MOMA.HNN. ML:1.7 0.000562 0.64 AML other m 2021-09-08T17:46:42.51
IV.MOMA.HNE. ML:1.8 0.0006535 0.54 AML other m 2021-09-08T17:46:42.65
IV.MOMA.HHE. ML:1.8 0.000694 0.52 AML other m 2021-09-08T17:46:42.64
IV.GAVE.EHE. ML:1.7 0.0004595 0.42 AML other m 2021-09-08T17:46:43.32
IV.GAVE.EHN. ML:1.7 0.0004915 0.46 AML other m 2021-09-08T17:46:44.38
IV.ASSB.HHN. ML:1.5 0.0001595 0.16 AML other m 2021-09-08T17:46:46.28
IV.CESI.HHN. ML:1.8 0.000341 0.22 AML other m 2021-09-08T17:46:46.23
IV.ASSB.HHE. ML:1.6 0.0002325 0.28 AML other m 2021-09-08T17:46:46.45
IV.CESX.HHN. ML:1.7 0.000335 0.44 AML other m 2021-09-08T17:46:46.93
IV.CESX.HHE. ML:1.8 0.000393 0.66 AML other m 2021-09-08T17:46:46.93
IV.CESI.HHE. ML:1.5 0.00017 1.2 AML other m 2021-09-08T17:46:47.14
IV.LNSS.HHE. ML:1.7 0.0002365 1.24 AML other m 2021-09-08T17:46:47.27
IV.NRCA.HHE. ML:1.7 0.000227 0.12 AML other m 2021-09-08T17:46:48.66
IV.NRCA.HHN. ML:1.5 0.000161 0.34 AML other m 2021-09-08T17:46:49.21
IV.FDMO.HHE. ML:1.5 0.00011885 0.22 AML other m 2021-09-08T17:46:49.76
IV.LNSS.HHN. ML:1.7 0.0002225 1.78 AML other m 2021-09-08T17:46:49.04
IV.MML1.EHN. ML:1.3 7.05E-5 0.94 AML other m 2021-09-08T17:46:50.82
IV.MML1.EHE. ML:1.5 0.000111 0.26 AML other m 2021-09-08T17:46:51.23
IV.ATCC.EHE. ML:1.6 0.00013145 0.2 AML other m 2021-09-08T17:46:51.62
IV.ATCC.EHN. ML:1.7 0.000164 0.18 AML other m 2021-09-08T17:46:51.75
IV.FDMO.HHN. ML:1.4 8.39E-5 0.8 AML other m 2021-09-08T17:46:52.22
IV.CSP1.EHE. ML:1.9 0.000219 0.4 AML other m 2021-09-08T17:46:53.13
IV.CSP1.EHN. ML:1.9 0.0002055 1.46 AML other m 2021-09-08T17:46:54.86
IV.MGAB.HHN. ML:1.4 5.43E-5 0.22 AML other m 2021-09-08T17:46:56.81
IV.MGAB.HHE. ML:1.5 7.67E-5 0.46 AML other m 2021-09-08T17:46:58.28
IX.NSC3.EHE.02 ML:2.5 4.265E-5 0.58 AML other m 2021-09-08T17:48:03.38
IX.NSC3.EHN.02 ML:2.6 5.655E-5 0.68 AML other m 2021-09-08T17:48:04.05
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