Earthquake with magnitude of ML 1.5 on date 26-10-2021 and time 19:19:34 (Italy) in region 5 km NE Spoleto (PG)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Spoleto (PG), on

  • 26-10-2021 17:19:34 (UTC)
  • 26-10-2021 19:19:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.768, 12.787 at 12 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
Spoleto PG 5 38218 38218
Sant'Anatolia di Narco PG 6 564 38782
Campello sul Clitunno PG 6 2442 41224
Vallo di Nera PG 6 364 41588
Scheggino PG 7 461 42049
Castel Ritaldi PG 11 3278 45327
Cerreto di Spoleto PG 12 1075 46402
Trevi PG 13 8469 54871
Poggiodomo PG 14 117 54988
Ferentillo TR 16 1913 56901
Sellano PG 18 1079 57980
Montefalco PG 18 5679 63659
Giano dell'Umbria PG 19 3846 67505
Monteleone di Spoleto PG 19 599 68104
Montefranco TR 19 1276 69380
Cascia PG 19 3217 72597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
26 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
76 Km W of Teramo (54892 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
100 Km N of Roma (2864731 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 1.5 2021-10-26
17:19:34
42.7683 12.7867 12 2021-10-26
17:27:57
Sala Sismica INGV-Roma 97006731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 17:19:34 ± 0.04
Latitude 42.7683 ± 0.0018
Longitude 12.7867 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97006731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 122
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.42988
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 27
Type of magnitude ML
Reference to an origin 97006731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 17:27:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2021-10-26T17:20:03.34 3.0 negative manual P 0.9 0
IV.EL6.EHZ. 2021-10-26T17:19:56.43 3.0 undecidable manual S 0.23 0
IV.ATCC.EHZ. 2021-10-26T17:19:50.54 0.6 undecidable manual S 346 0.4299 91 0.77 38
IV.ARVD.HHZ. 2021-10-26T17:19:48.39 3.0 positive manual P -0.75 0
IV.MML1.EHZ. 2021-10-26T17:19:48.25 0.6 undecidable manual S 21 0.3705 92 0.24 46
IV.FDMO.HHZ. 2021-10-26T17:19:47.21 0.6 undecidable manual S 39 0.3471 92 -0.09 47
IV.ASSB.HHZ. 2021-10-26T17:19:45.77 0.6 undecidable manual S 341 0.2896 93 0.16 47
IV.NRCA.HHZ. 2021-10-26T17:19:44.33 0.3 undecidable manual S 75 0.2491 94 -0.08 71
IV.CESI.HHZ. 2021-10-26T17:19:44.43 0.3 undecidable manual S 20 0.2518 93 -0.06 72
IV.LNSS.HHZ. 2021-10-26T17:19:44.58 0.6 undecidable manual S 131 0.2491 94 0.17 48
IV.ATCC.EHZ. 2021-10-26T17:19:43.36 0.3 undecidable manual P 346 0.4299 91 0.01 70
IV.CSP1.EHZ. 2021-10-26T17:19:43.68 3.0 negative manual P -0.04 0
IV.CESX.HHZ. 2021-10-26T17:19:43.25 0.1 undecidable manual S 223 0.2167 95 -0.21 93
IV.FDMO.HHZ. 2021-10-26T17:19:42.13 0.3 undecidable manual P 39 0.3471 92 0.21 69
IV.MML1.EHZ. 2021-10-26T17:19:42.09 0.3 undecidable manual P 21 0.3705 92 -0.24 68
IV.ARRO.EHZ. 2021-10-26T17:19:42.71 0.3 undecidable manual S 185 0.1898 96 0.05 74
IV.RM33.EHZ. 2021-10-26T17:19:42.93 3.0 negative manual P -0.25 0
IV.MOMA.HHZ. 2021-10-26T17:19:41.76 0.1 undecidable manual S 283 0.1628 100 -0.11 97
IV.MC2.EHZ. 2021-10-26T17:19:41.74 3.0 negative manual P 0.18 0
IV.GAVE.EHZ. 2021-10-26T17:19:40.36 0.3 undecidable manual S 134 0.1097 117 -0.01 75
IV.ASSB.HHZ. 2021-10-26T17:19:40.80 0.3 negative manual P 341 0.2896 93 -0.14 70
IV.NRCA.HHZ. 2021-10-26T17:19:40.11 0.1 undecidable manual P 75 0.2491 94 -0.14 94
IV.CESI.HHZ. 2021-10-26T17:19:40.21 0.1 positive manual P 20 0.2518 93 -0.08 95
IV.LNSS.HHZ. 2021-10-26T17:19:40.20 0.1 undecidable manual P 131 0.2491 94 -0.05 96
IV.CESX.HHZ. 2021-10-26T17:19:39.84 0.1 undecidable manual P 223 0.2167 95 0.14 96
IV.ARRO.EHZ. 2021-10-26T17:19:39.29 0.1 positive manual P 185 0.1898 96 0.05 99
IV.MOMA.HHZ. 2021-10-26T17:19:38.73 0.1 negative manual P 283 0.1628 100 -0.05 98
IV.GAVE.EHZ. 2021-10-26T17:19:37.96 0.1 undecidable manual P 134 0.1097 117 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.8 0.0005305 1.7 AML other m 2021-10-26T17:19:41.99
IV.MOMA.HNN. ML:1.8 0.0005185 1.7 AML other m 2021-10-26T17:19:41.99
IV.MOMA.HHE. ML:2 0.000699 0.16 AML other m 2021-10-26T17:19:42.22
IV.MOMA.HNE. ML:1.9 0.0006335 0.16 AML other m 2021-10-26T17:19:42.14
IV.ARRO.EHE. ML:1.3 0.0001355 1.22 AML other m 2021-10-26T17:19:42.93
IV.ARRO.EHN. ML:1.4 0.0001895 0.58 AML other m 2021-10-26T17:19:43.51
IV.CESX.HHN. ML:1.6 0.0002675 0.44 AML other m 2021-10-26T17:19:43.77
IV.NRCA.HHE. ML:1.6 0.000189 0.16 AML other m 2021-10-26T17:19:44.49
IV.CESI.HHE. ML:1.7 0.0002645 0.28 AML other m 2021-10-26T17:19:44.74
IV.CESI.HHN. ML:1.8 0.0003045 0.24 AML other m 2021-10-26T17:19:44.77
IV.CESX.HHE. ML:1.5 0.0001735 0.32 AML other m 2021-10-26T17:19:44.76
IV.LNSS.HHN. ML:1.6 0.0002055 0.26 AML other m 2021-10-26T17:19:44.83
IV.NRCA.HHN. ML:1.4 0.0001305 1.08 AML other m 2021-10-26T17:19:45.60
IV.LNSS.HHE. ML:1.7 0.0002455 0.72 AML other m 2021-10-26T17:19:45.43
IV.ASSB.HHN. ML:1.3 9.485E-5 0.42 AML other m 2021-10-26T17:19:46.23
IV.ASSB.HHE. ML:1.2 6.58E-5 0.54 AML other m 2021-10-26T17:19:46.21
IV.FDMO.HHN. ML:1.3 7.05E-5 0.22 AML other m 2021-10-26T17:19:47.74
IV.FDMO.HHE. ML:1.4 9.55E-5 0.18 AML other m 2021-10-26T17:19:48.28
IV.MML1.EHE. ML:1.4 7.42E-5 0.36 AML other m 2021-10-26T17:19:49.17
IV.MML1.EHN. ML:1.3 7.055E-5 0.18 AML other m 2021-10-26T17:19:49.51
IV.RM33.EHN. ML:1.3 5.58E-5 0.48 AML other m 2021-10-26T17:19:49.85
IV.RM33.EHE. ML:1.4 6.71E-5 1.22 AML other m 2021-10-26T17:19:50.67
IV.ATCC.EHE. ML:1.4 6.635E-5 1.56 AML other m 2021-10-26T17:19:50.92
IV.ATCC.EHN. ML:1.2 4.515E-5 0.62 AML other m 2021-10-26T17:19:51.05
IV.EL6.EHE. ML:1.7 8.635E-5 0.2 AML other m 2021-10-26T17:19:56.91
IV.EL6.EHN. ML:1.6 6.27E-5 0.42 AML other m 2021-10-26T17:20:01.14
IV.NRCA.HNE. ML:1.6 0.00020559365 0.7424 AML other m 2021-10-26T17:19:44.51
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