Earthquake with magnitude of ML 1.0 on date 20-01-2021 and time 18:14:00 (UTC) in region 3 km E Scheggino (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km E Scheggino (PG), on

  • 20-01-2021 18:14:00 (UTC)
  • 20-01-2021 19:14:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.71, 12.86 at 10 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 3 461 461
Sant'Anatolia di Narco PG 4 564 1025
Poggiodomo PG 6 117 1142
Vallo di Nera PG 7 364 1506
Monteleone di Spoleto PG 9 599 2105
Spoleto PG 11 38218 40323
Ferentillo TR 11 1913 42236
Cascia PG 12 3217 45453
Polino TR 13 233 45686
Cerreto di Spoleto PG 14 1075 46761
Montefranco TR 14 1276 48037
Campello sul Clitunno PG 15 2442 50479
Arrone TR 16 2763 53242
Leonessa RI 18 2435 55677
Morro Reatino RI 20 373 56050

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Terni (111501 inhabitants)
31 Km SE of Foligno (57155 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
70 Km E of Viterbo (67173 inhabitants)
79 Km N of Guidonia Montecelio (88673 inhabitants)
83 Km N of Tivoli (56533 inhabitants)
96 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 1.0 2021-01-20
18:14:00
42.71 12.86 10 2021-01-20
18:29:37
Sala Sismica INGV-Roma 86406311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-20 18:14:00 ± 0.1
Latitude 42.71 ± 0.01
Longitude 12.86 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86406311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 654
Semi-minor axis of confidence ellipse (meter) 528
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 86406311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-20 18:29:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMUR.HNZ. 2021-01-20T18:14:15.01 3.0 undecidable manual P -0.21 0
IV.FDMO.HHZ. 2021-01-20T18:14:14.02 0.3 undecidable manual S 26 0.3687 50 -0.03 73
IV.CESI.HHZ. 2021-01-20T18:14:12.06 0.3 undecidable manual S 6 0.3004 50 0.03 74
IV.NRCA.HHZ. 2021-01-20T18:14:09.22 0.3 undecidable manual S 55 0.223 111 -0.33 71
IV.MOMA.HHZ. 2021-01-20T18:14:09.82 0.3 undecidable manual S 295 0.2374 110 -0.23 72
IV.FDMO.HHZ. 2021-01-20T18:14:08.16 0.1 undecidable manual P 26 0.3687 50 -0.09 97
IV.MC2.EHZ. 2021-01-20T18:14:08.01 0.3 undecidable manual P 49 0.3148 50 0.69 62
IV.LNSS.HHZ. 2021-01-20T18:14:07.37 0.3 undecidable manual S 128 0.1646 118 -0.13 75
IV.ARRO.EHZ. 2021-01-20T18:14:06.56 0.3 undecidable manual S 210 0.1457 121 -0.28 73
IV.MOMA.HHZ. 2021-01-20T18:14:06.25 0.3 undecidable manual P 295 0.2374 110 0.31 71
IV.CESI.HHZ. 2021-01-20T18:14:06.89 0.3 undecidable manual P 6 0.3004 50 -0.19 72
IV.NRCA.HHZ. 2021-01-20T18:14:05.40 0.3 undecidable manual P 55 0.223 111 -0.26 72
IV.ARRO.EHZ. 2021-01-20T18:14:04.07 0.3 undecidable manual P 210 0.1457 121 -0.02 77
IV.LNSS.HHZ. 2021-01-20T18:14:04.43 0.3 undecidable manual P 128 0.1646 118 -0.04 76
IV.GAVE.EHZ. 2021-01-20T18:14:04.03 0.1 undecidable manual S 121 0.0252 163 0.24 100
IV.GAVE.EHZ. 2021-01-20T18:14:02.58 0.1 undecidable manual P 121 0.0252 163 0.25 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.5 0.0005855 0.42 AML other m 2021-01-20T18:14:04.07
IV.GAVE.EHE. ML:1.5 0.00058 0.16 AML other m 2021-01-20T18:14:04.39
IV.ARRO.EHN. ML:1.1 0.00010695 0.24 AML other m 2021-01-20T18:14:06.99
IV.ARRO.EHE. ML:1.2 0.000128 0.12 AML other m 2021-01-20T18:14:07.15
IV.LNSS.HHN. ML:1.2 0.0001385 1.76 AML other m 2021-01-20T18:14:07.90
IV.LNSS.HHE. ML:1.4 0.000199 0.12 AML other m 2021-01-20T18:14:07.93
IV.NRCA.HHN. ML:0.8 3.52E-5 0.16 AML other m 2021-01-20T18:14:09.40
IV.NRCA.HHE. ML:1 5.895E-5 0.48 AML other m 2021-01-20T18:14:09.30
IV.MOMA.HHE. ML:0.8 3.2548295E-5 0.1408 AML other m 2021-01-20T18:14:10.23
IV.MOMA.HHN. ML:0.6 2.3425064E-5 0.1408 AML other m 2021-01-20T18:14:10.96
IV.CESI.HHE. ML:0.8 2.506231E-5 0.2176 AML other m 2021-01-20T18:14:13.09
IV.CESI.HHN. ML:1.1 4.8097365E-5 0.1664 AML other m 2021-01-20T18:14:12.56
IV.FDMO.HHE. ML:1 2.876298E-5 0.1792 AML other m 2021-01-20T18:14:14.76
IV.FDMO.HHN. ML:0.6 1.5636735E-5 0.1408 AML other m 2021-01-20T18:14:15.08
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