Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 07-11-2021 and time 13:18:47 (UTC) in region 5 km SE Castel Ritaldi (PG)

A magnitude ML 1.7 earthquake occured in region: 5 km SE Castel Ritaldi (PG), on

  • 07-11-2021 13:18:47 (UTC)
  • 07-11-2021 14:18:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 12.7170 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castel Ritaldi PG 5 3278 3278
Campello sul Clitunno PG 6 2442 5720
Spoleto PG 6 38218 43938
Trevi PG 10 8469 52407
Sant'Anatolia di Narco PG 12 564 52971
Vallo di Nera PG 12 364 53335
Giano dell'Umbria PG 12 3846 57181
Scheggino PG 13 461 57642
Montefalco PG 13 5679 63321
Massa Martana PG 16 3770 67091
Cerreto di Spoleto PG 17 1075 68166
Acquasparta TR 18 4778 72944
Bevagna PG 18 5081 78025
Foligno PG 19 57155 135180
Gualdo Cattaneo PG 19 6155 141335
Ferentillo TR 20 1913 143248
Poggiodomo PG 20 117 143365

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
82 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2021-11-07
13:18:47		 42.7893 12.7168 10 2022-03-30
13:04:19		 Bollettino Sismico Italiano INGV 98012851
Reviewed
Rev100 		ML 1.7 2021-11-07
13:18:47		 42.7867 12.7178 10 2021-11-07
13:34:15		 Sala Sismica INGV-Roma 97316721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-07 13:18:47 ± 0.04
Latitude 42.7893 ± 0.0027
Longitude 12.7168 ± 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 98012851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 340
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.72665
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 98012851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-01 12:54:04

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 97316721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-07 13:34:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2021-11-07T13:19:04.42 0.6 undecidable manual S 109 53.4021 50 0.39 43
IV.RM33.EHZ. 2021-11-07T13:19:03.42 0.6 undecidable manual S 127 51.1155 50 -0.01 47
IV.CSP1.EHZ. 2021-11-07T13:19:03.97 0.6 undecidable manual S 50 51.9036 50 0.33 44
IV.ATCC.EHZ. 2021-11-07T13:19:01.88 0.3 undecidable manual S 352 44.3223 50 0.26 67
IV.FDMO.HHZ. 2021-11-07T13:19:00.58 0.3 undecidable manual S 48 40.7259 50 -0.06 71
IV.ARVD.HHZ. 2021-11-07T13:19:00.86 0.6 undecidable manual P 13 80.6637 50 -0.23 42
IV.MC2.EHZ. 2021-11-07T13:19:00.88 0.6 undecidable manual S 70 40.7259 50 0.23 46
IV.CING.HHZ. 2021-11-07T13:19:00.32 0.3 undecidable manual P 31 75.6687 50 -0.01 67
IV.EL6.EHZ. 2021-11-07T13:18:59.04 0.1 undecidable manual P 27 67.4769 50 -0.03 91
IV.SACS.HHZ. 2021-11-07T13:18:59.03 0.3 undecidable manual P 276 65.9895 50 0.2 66
IT.MTCL.HGZ. 2021-11-07T13:18:58.08 0.6 undecidable manual S 45 32.2455 50 -0.31 45
IV.NRCA.HHZ. 2021-11-07T13:18:58.53 0.3 undecidable manual S 81 32.745 50 0.02 72
IV.GUMA.HHZ. 2021-11-07T13:18:58.04 0.3 undecidable manual P 59 58.6968 50 0.34 65
IV.LNSS.HHZ. 2021-11-07T13:18:58.55 0.3 undecidable manual S 128 33.5442 50 -0.17 70
IV.MF5.EHZ. 2021-11-07T13:18:58.59 0.6 undecidable manual P 70 64.2912 50 0.03 46
IV.FEMA.HNE. 2021-11-07T13:18:58.46 0.6 undecidable manual S 55 33.1446 50 -0.17 47
IV.ASSB.HHZ. 2021-11-07T13:18:57.58 0.6 undecidable manual S 350 28.4493 50 0.2 47
IV.SMA1.EHZ. 2021-11-07T13:18:57.24 0.1 undecidable manual P 109 53.4021 50 0.35 87
IV.CESI.HHZ. 2021-11-07T13:18:57.42 0.6 undecidable manual S 32 28.3494 50 0.07 48
IV.RM33.EHZ. 2021-11-07T13:18:56.40 0.1 undecidable manual P 127 51.1155 50 -0.14 91
IV.ARRO.EHZ. 2021-11-07T13:18:56.36 0.6 undecidable manual S 170 23.6541 113 0.29 46
IV.CSP1.EHZ. 2021-11-07T13:18:56.64 0.1 positive manual P 50 51.9036 50 -0.02 93
IV.SNTG.HHZ. 2021-11-07T13:18:56.90 0.1 undecidable manual P 19 54.7008 50 -0.2 90
IV.MGAB.HHZ. 2021-11-07T13:18:56.67 0.1 undecidable manual P 286 51.0156 50 0.15 91
IV.ATCC.EHZ. 2021-11-07T13:18:55.48 0.1 undecidable manual P 352 44.3223 50 -0.01 95
IV.CESX.HHZ. 2021-11-07T13:18:55.45 0.3 undecidable manual S 208 22.6551 114 -0.32 69
IV.FDMO.HHZ. 2021-11-07T13:18:54.79 0.1 positive manual P 48 40.7259 50 -0.14 93
IV.MML1.EHZ. 2021-11-07T13:18:54.85 0.3 undecidable manual P 30 41.5251 50 -0.2 69
IV.GAVE.EHZ. 2021-11-07T13:18:54.55 0.3 undecidable manual S 127 18.0708 120 0.23 71
IV.MC2.EHZ. 2021-11-07T13:18:54.87 0.1 positive manual P 70 40.7259 50 -0.06 94
IV.FEMA.HNE. 2021-11-07T13:18:53.78 0.3 undecidable manual P 55 33.1446 50 0.01 72
IV.ASSB.HHZ. 2021-11-07T13:18:53.17 0.3 undecidable manual P 350 28.4493 50 0.12 71
IT.MTCL.HGZ. 2021-11-07T13:18:53.50 0.3 undecidable manual P 45 32.2455 50 -0.13 71
IV.NRCA.HHZ. 2021-11-07T13:18:53.44 0.1 positive manual P 81 32.745 50 -0.26 92
IV.LNSS.HHZ. 2021-11-07T13:18:53.72 0.1 undecidable manual P 128 33.5442 50 -0.1 95
IV.MOMA.HHZ. 2021-11-07T13:18:52.61 0.3 undecidable manual S 278 12.0768 130 0 75
IT.GNU.HGZ. 2021-11-07T13:18:52.66 0.6 undecidable manual S 278 12.0768 130 0.05 50
IV.ARRO.EHZ. 2021-11-07T13:18:52.77 0.6 undecidable manual P 170 23.6541 113 0.48 45
IV.CESI.HHZ. 2021-11-07T13:18:52.85 0.1 negative manual P 32 28.3494 50 -0.18 94
IV.GAVE.EHZ. 2021-11-07T13:18:51.22 0.1 undecidable manual P 127 18.0708 120 -0.06 98
IV.CESX.HHZ. 2021-11-07T13:18:51.85 0.1 undecidable manual P 208 22.6551 114 -0.26 93
IV.MOMA.HHZ. 2021-11-07T13:18:50.32 0.1 positive manual P 278 12.0768 130 0.03 100
IT.GNU.HGZ. 2021-11-07T13:18:50.34 0.1 undecidable manual P 278 12.0768 130 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:2.0 0.0011275 1.48 AML other m 2021-11-07T13:18:53.01
IV.MOMA.HNE. ML:2.2 0.0019100000000000002 1.78 AML other m 2021-11-07T13:18:53.03
IV.MOMA.HHE. ML:2.2 0.001945 1.76 AML other m 2021-11-07T13:18:53.03
IV.MOMA.HNN. ML:2.0 0.001023 0.94 AML other m 2021-11-07T13:18:53.28
IV.GAVE.EHN. ML:1.8 0.0005545 0.76 AML other m 2021-11-07T13:18:55.60
IV.CESX.HHE. ML:1.6 0.00024249999999999999 0.22 AML other m 2021-11-07T13:18:56.30
IV.GAVE.EHE. ML:1.9 0.0007 0.66 AML other m 2021-11-07T13:18:56.43
IV.CESX.HHN. ML:1.7 0.0003305 0.46 AML other m 2021-11-07T13:18:57.92
IV.CESI.HNN. ML:1.8 0.00029 0.56 AML other m 2021-11-07T13:18:58.61
IV.NRCA.HHN. ML:1.8 0.00029600000000000004 1.88 AML other m 2021-11-07T13:18:59.01
IV.NRCA.HHE. ML:2.0 0.00048650000000000006 0.12 AML other m 2021-11-07T13:18:59.23
IV.CESI.HHE. ML:1.6 0.000179 0.24 AML other m 2021-11-07T13:18:59.48
IV.CESI.HHN. ML:1.6 0.00022899999999999998 0.36 AML other m 2021-11-07T13:18:59.60
IV.LNSS.HHE. ML:1.9 0.000347 0.14 AML other m 2021-11-07T13:19:00.00
IV.LNSS.HHN. ML:1.7 0.00022649999999999998 1.18 AML other m 2021-11-07T13:19:00.01
IV.CESI.HNE. ML:1.6 0.0002155 0.6 AML other m 2021-11-07T13:19:01.17
IV.FDMO.HHN. ML:1.4 0.0000902 0.1 AML other m 2021-11-07T13:19:01.52
IV.ATCC.EHE. ML:1.6 0.0001275 0.86 AML other m 2021-11-07T13:19:02.59
IV.MML1.EHE. ML:1.4 0.00008335 1.3 AML other m 2021-11-07T13:19:02.19
IV.FDMO.HHE. ML:1.6 0.0001325 1.52 AML other m 2021-11-07T13:19:02.22
IV.MML1.EHN. ML:1.5 0.0000937 1.14 AML other m 2021-11-07T13:19:03.89
IV.ATCC.EHN. ML:1.6 0.0001305 0.22 AML other m 2021-11-07T13:19:04.66
IV.CSP1.EHN. ML:2.0 0.00023549999999999998 1.58 AML other m 2021-11-07T13:19:04.97
IV.CSP1.EHE. ML:2.0 0.000256 0.68 AML other m 2021-11-07T13:19:05.52
IV.RM33.EHE. ML:1.7 0.000124 0.14 AML other m 2021-11-07T13:19:05.49
IV.MGAB.HHN. ML:1.7 0.0001171 0.48 AML other m 2021-11-07T13:19:05.44
IV.SMA1.EHN. ML:1.7 0.000112 0.24 AML other m 2021-11-07T13:19:06.53
IV.GUMA.HHE. ML:1.8 0.00014850000000000003 0.26 AML other m 2021-11-07T13:19:06.67
IV.SNTG.HHE. ML:1.3 0.000047850000000000004 0.6 AML other m 2021-11-07T13:19:06.75
IV.SMA1.EHE. ML:1.8 0.000158 0.24 AML other m 2021-11-07T13:19:06.64
IV.RM33.EHN. ML:1.5 0.0000759 0.16 AML other m 2021-11-07T13:19:06.83
IV.SNTG.HHN. ML:1.3 0.0000472 1.28 AML other m 2021-11-07T13:19:07.26
IV.MGAB.HHE. ML:1.6 0.00010960000000000001 0.48 AML other m 2021-11-07T13:19:07.66
IV.GUMA.HHN. ML:1.8 0.000136 0.5 AML other m 2021-11-07T13:19:09.41
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