Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 12-08-2020 and time 14:09:17 (Italy) in region 7 km W Monteleone di Spoleto (PG)

A magnitude ML 1.0 earthquake occured in region: 7 km W Monteleone di Spoleto (PG), on

  • 12-08-2020 12:09:17 (UTC)
  • 12-08-2020 14:09:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6470, 12.8700 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.

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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
Monteleone di Spoleto PG 7 599 599
Polino TR 7 233 832
Ferentillo TR 7 1913 2745
Scheggino PG 8 461 3206
Poggiodomo PG 9 117 3323
Sant'Anatolia di Narco PG 10 564 3887
Montefranco TR 10 1276 5163
Arrone TR 11 2763 7926
Leonessa RI 12 2435 10361
Vallo di Nera PG 14 364 10725
Morro Reatino RI 14 373 11098
Cascia PG 14 3217 14315
Labro RI 15 374 14689
Spoleto PG 15 38218 52907
Rivodutri RI 15 1253 54160
Poggio Bustone RI 16 2055 56215
Colli sul Velino RI 18 533 56748
Cerreto di Spoleto PG 20 1075 57823
Cantalice RI 20 2755 60578

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
68 Km E of Viterbo (67173 inhabitants)
68 Km W of Teramo (54892 inhabitants)
73 Km N of Guidonia Montecelio (88673 inhabitants)
76 Km N of Tivoli (56533 inhabitants)
90 Km NE of Roma (2864731 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
Reviewed
Rev100 		ML 1.0 2020-08-12
12:09:17		 42.6472 12.8703 11 2020-08-12
12:21:35		 Sala Sismica INGV-Roma 81906571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-12 12:09:17 ± 0.05
Latitude 42.6472 ± 0.0036
Longitude 12.8703 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81906571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 406
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.42448
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 81906571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-12 12:21:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-08-12T12:09:33.17 0.3 undecidable manual S 339 47.1195 50 0.19 68
IV.MMO1.HNN. 2020-08-12T12:09:32.85 0.3 undecidable manual S 53 46.5201 50 0.03 71
IV.FDMO.HHZ. 2020-08-12T12:09:32.95 0.3 undecidable manual S 22 46.62 50 0.09 70
IV.MC2.EHN. 2020-08-12T12:09:31.02 0.3 undecidable manual S 41 39.1275 50 0.16 70
IV.CESI.HHE. 2020-08-12T12:09:31.30 0.3 undecidable manual S 4 39.8268 50 0.28 68
IV.SMA1.EHE. 2020-08-12T12:09:30.84 0.6 undecidable manual S 93 38.0286 50 0.29 45
IT.GNU.HGZ. 2020-08-12T12:09:28.16 0.3 undecidable manual S 306 30.0477 50 -0.25 69
IV.MOMA.HHZ. 2020-08-12T12:09:28.24 0.3 undecidable manual S 306 30.0477 50 -0.18 71
IV.RM33.EHZ. 2020-08-12T12:09:28.71 0.3 undecidable manual S 118 32.0457 50 -0.24 69
IV.MMO1.HNN. 2020-08-12T12:09:27.36 1.0 undecidable manual P 53 46.5201 50 0.85 18
IV.NRCA.HHZ. 2020-08-12T12:09:27.64 0.3 undecidable manual S 44 28.6491 50 -0.42 67
IV.FDMO.HHZ. 2020-08-12T12:09:26.47 0.1 undecidable manual P 22 46.62 50 -0.06 94
IV.ASSB.HHZ. 2020-08-12T12:09:26.56 0.1 undecidable manual P 339 47.1195 50 -0.04 94
IV.CESI.HHE. 2020-08-12T12:09:25.44 0.1 undecidable manual P 4 39.8268 50 -0.03 95
IV.SMA1.EHE. 2020-08-12T12:09:25.39 0.3 undecidable manual P 93 38.0286 50 0.2 69
IV.MC2.EHN. 2020-08-12T12:09:25.37 0.1 undecidable manual P 41 39.1275 50 0 96
IV.RM33.EHZ. 2020-08-12T12:09:24.37 0.1 undecidable manual P 118 32.0457 50 0.1 95
IV.NRCA.HHZ. 2020-08-12T12:09:23.55 0.1 undecidable manual P 44 28.6491 50 -0.21 94
IV.ARRO.EHZ. 2020-08-12T12:09:23.31 0.3 undecidable manual S 229 11.3775 133 0 76
IT.GNU.HGZ. 2020-08-12T12:09:23.88 0.3 undecidable manual P 306 30.0477 50 -0.08 72
IV.MOMA.HHZ. 2020-08-12T12:09:23.96 0.1 undecidable manual P 306 30.0477 50 0 98
IV.LNSS.HHZ. 2020-08-12T12:09:23.93 0.3 undecidable manual S 109 14.6742 126 -0.27 71
IV.LNSS.HHZ. 2020-08-12T12:09:21.54 0.1 undecidable manual P 109 14.6742 126 0.01 100
IV.GAVE.EHZ. 2020-08-12T12:09:21.88 0.3 undecidable manual S 21 5.3946 153 -0.17 74
IV.ARRO.EHZ. 2020-08-12T12:09:21.22 0.1 undecidable manual P 229 11.3775 133 0.21 97
IV.GAVE.EHZ. 2020-08-12T12:09:20.45 0.1 undecidable manual P 21 5.3946 153 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.8 0.0009350000000000001 0.38 AML other m 2020-08-12T12:09:22.25
IV.GAVE.EHE. ML:1.5 0.000489 0.98 AML other m 2020-08-12T12:09:22.75
IV.ARRO.EHN. ML:1.1 0.0001565 0.32 AML other m 2020-08-12T12:09:23.62
IV.ARRO.EHE. ML:1.0 0.00011235000000000001 0.64 AML other m 2020-08-12T12:09:23.46
IV.LNSS.HHN. ML:1.4 0.00020899999999999998 0.4 AML other m 2020-08-12T12:09:24.34
IV.LNSS.HHE. ML:1.4 0.00023700000000000001 0.58 AML other m 2020-08-12T12:09:24.13
IV.NRCA.HHN. ML:0.9 0.000038400000000000005 1.08 AML other m 2020-08-12T12:09:27.78
IV.NRCA.HHE. ML:1.0 0.00005615 0.6 AML other m 2020-08-12T12:09:27.62
IV.MOMA.HHE. ML:0.9 0.00003345 1.04 AML other m 2020-08-12T12:09:29.14
IV.RM33.EHE. ML:0.8 0.000025500000000000003 0.3 AML other m 2020-08-12T12:09:29.93
IV.MOMA.HHN. ML:1.0 0.00004795 0.54 AML other m 2020-08-12T12:09:30.03
IV.RM33.EHN. ML:0.6 0.000021649999999999998 0.52 AML other m 2020-08-12T12:09:31.02
IV.FDMO.HHE. ML:1.0 0.000023199999999999998 0.42 AML other m 2020-08-12T12:09:33.69
IV.ASSB.HHE. ML:1.0 0.0000258 0.66 AML other m 2020-08-12T12:09:33.96
IV.FDMO.HHN. ML:0.7 0.00001635 1.18 AML other m 2020-08-12T12:09:34.73
IV.ASSB.HHN. ML:1.0 0.00002615 0.12 AML other m 2020-08-12T12:09:34.69
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