Earthquake with magnitude of ML 0.9 on date 22-10-2020 and time 17:37:20 (UTC) in region 4 km S Scheggino (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km S Scheggino (PG), on

  • 22-10-2020 17:37:20 (UTC)
  • 22-10-2020 19:37:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 12.84 at 11 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
Scheggino PG 4 461 461
Sant'Anatolia di Narco PG 6 564 1025
Ferentillo TR 8 1913 2938
Poggiodomo PG 8 117 3055
Monteleone di Spoleto PG 9 599 3654
Vallo di Nera PG 10 364 4018
Polino TR 10 233 4251
Spoleto PG 11 38218 42469
Montefranco TR 11 1276 43745
Arrone TR 12 2763 46508
Cascia PG 15 3217 49725
Leonessa RI 16 2435 52160
Campello sul Clitunno PG 17 2442 54602
Cerreto di Spoleto PG 17 1075 55677
Morro Reatino RI 17 373 56050
Labro RI 17 374 56424
Rivodutri RI 18 1253 57677
Poggio Bustone RI 20 2055 59732

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Terni (111501 inhabitants)
33 Km SE of Foligno (57155 inhabitants)
58 Km NW of L'Aquila (69753 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
67 Km E of Viterbo (67173 inhabitants)
70 Km W of Teramo (54892 inhabitants)
76 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 0.9 2020-10-22
17:37:20
42.68 12.85 11 2020-10-22
17:50:04
Sala Sismica INGV-Roma 84032521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 17:37:20 ± 0.08
Latitude 42.68 ± 0.00
Longitude 12.85 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84032521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.3984
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 84032521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-22 17:50:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-10-22T17:37:34.87 0.3 undecidable manual S 26 0.3984 91 0.09 69
IV.SMA1.EHZ. 2020-10-22T17:37:34.33 0.3 undecidable manual S 98 0.3633 91 0.59 63
IV.ASSB.HHE. 2020-10-22T17:37:34.84 0.3 undecidable manual S 339 0.3876 91 0.38 65
IV.CESI.HHZ. 2020-10-22T17:37:32.79 0.3 undecidable manual S 8 0.3283 91 0.09 70
IV.RM33.EHZ. 2020-10-22T17:37:31.92 0.6 undecidable manual S 122 0.3202 91 -0.55 42
IV.NRCA.HHZ. 2020-10-22T17:37:30.12 0.3 undecidable manual S 52 0.2509 91 -0.27 69
IV.MOMA.HHZ. 2020-10-22T17:37:29.83 0.3 undecidable manual S 302 0.2374 91 -0.17 71
IV.FDMO.HHZ. 2020-10-22T17:37:28.76 0.6 undecidable manual P 26 0.3984 91 0.01 47
IV.CESX.HHZ. 2020-10-22T17:37:28.90 0.6 undecidable manual S 250 0.2023 92 -0.08 48
IV.SMA1.EHZ. 2020-10-22T17:37:28.98 1.0 undecidable manual P 98 0.3633 91 0.83 19
IV.RM33.EHZ. 2020-10-22T17:37:27.21 1.0 undecidable manual P 122 0.3202 91 -0.2 23
IV.ASSB.HHE. 2020-10-22T17:37:27.69 0.3 undecidable manual P 339 0.3876 91 -0.88 56
IV.LNSS.HHZ. 2020-10-22T17:37:27.73 0.3 undecidable manual S 118 0.1628 94 -0.05 73
IV.CESI.HHZ. 2020-10-22T17:37:27.36 0.1 undecidable manual P 8 0.3283 91 -0.19 93
IV.NRCA.HHZ. 2020-10-22T17:37:26.11 0.1 undecidable manual P 52 0.2509 91 -0.11 95
IV.ARRO.EHZ. 2020-10-22T17:37:26.45 0.3 undecidable manual S 210 0.116 108 0.03 75
IV.MOMA.HHZ. 2020-10-22T17:37:26.25 0.3 undecidable manual P 302 0.2374 91 0.26 69
IV.CESX.HHZ. 2020-10-22T17:37:25.12 0.6 undecidable manual P 250 0.2023 92 -0.28 46
IV.LNSS.HHZ. 2020-10-22T17:37:24.74 0.1 undecidable manual P 118 0.1628 94 0.03 99
IV.GAVE.EHZ. 2020-10-22T17:37:24.64 0.1 undecidable manual S 70 0.0387 153 -0.06 100
IV.ARRO.EHZ. 2020-10-22T17:37:24.24 0.1 undecidable manual P 210 0.116 108 0.31 94
IV.GAVE.EHZ. 2020-10-22T17:37:23.16 0.1 undecidable manual P 70 0.0387 153 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.2 0.0002289227 0.1664 AML other m 2020-10-22T17:37:25.13
IV.GAVE.EHN. ML:1.1 0.00020666775 0.1152 AML other m 2020-10-22T17:37:25.02
IV.GAVE.HNE. ML:1.2 0.0002507878 0.1792 AML other m 2020-10-22T17:37:25.13
IV.GAVE.HNN. ML:0.6 5.4397665E-5 0.1024 AML other m 2020-10-22T17:37:25.18
IV.ARRO.EHE. ML:1.1 0.0001268967 0.192 AML other m 2020-10-22T17:37:26.89
IV.ARRO.EHN. ML:1 0.0001053503 0.1664 AML other m 2020-10-22T17:37:27.06
IV.LNSS.HHE. ML:1 8.0472445E-5 0.1408 AML other m 2020-10-22T17:37:28.62
IV.LNSS.HHN. ML:0.8 5.424366E-5 0.1792 AML other m 2020-10-22T17:37:29.40
IV.NRCA.HHE. ML:0.9 4.0584415E-5 0.1152 AML other m 2020-10-22T17:37:32.17
IV.NRCA.HHN. ML:0.8 2.986142E-5 0.1536 AML other m 2020-10-22T17:37:30.21
IV.NRCA.HNE. ML:1.1 6.126895E-5 0.1664 AML other m 2020-10-22T17:37:30.58
IV.NRCA.HNN. ML:1.2 8.4205275E-5 0.2432 AML other m 2020-10-22T17:37:30.17
IV.MOMA.HHE. ML:1 4.7958325E-5 0.2304 AML other m 2020-10-22T17:37:30.79
IV.MOMA.HHN. ML:1 6.0905075E-5 0.2816 AML other m 2020-10-22T17:37:30.53
IV.MOMA.HNE. ML:1 5.59791617E-5 0.1408 AML other m 2020-10-22T17:37:30.79
IV.MOMA.HNN. ML:1.1 6.523238E-5 0.256 AML other m 2020-10-22T17:37:30.53
IV.RM33.EHE. ML:0.8 2.27216E-5 0.1408 AML other m 2020-10-22T17:37:34.37
IV.RM33.EHN. ML:0.4 1.20995855E-5 0.1792 AML other m 2020-10-22T17:37:34.57
IV.CESI.HHE. ML:0.6 1.4614405E-5 0.1152 AML other m 2020-10-22T17:37:33.74
IV.CESI.HHN. ML:0.7 2.110302E-5 0.2048 AML other m 2020-10-22T17:37:33.84
IV.FDMO.HHE. ML:0.7 1.26652155E-5 0.192 AML other m 2020-10-22T17:37:35.61
IV.FDMO.HHN. ML:0.8 1.8075772E-5 0.1536 AML other m 2020-10-22T17:37:35.49
IV.SMA1.EHE. ML:0.5 1.1402894E-5 0.1664 AML other m 2020-10-22T17:37:34.89
IV.SMA1.EHN. ML:0.6 1.33676045E-5 0.2432 AML other m 2020-10-22T17:37:35.74
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download