Earthquake with magnitude of ML 1.0 on date 22-09-2020 and time 00:17:22 (UTC) in region 4 km SE Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Sellano (PG), on

  • 22-09-2020 00:17:22 (UTC)
  • 22-09-2020 02:17:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.96 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
Sellano PG 4 1079 1079
Cerreto di Spoleto PG 6 1075 2154
Preci PG 7 724 2878
Visso MC 13 1107 3985
Vallo di Nera PG 13 364 4349
Norcia PG 13 4957 9306
Monte Cavallo MC 15 145 9451
Campello sul Clitunno PG 16 2442 11893
Castelsantangelo sul Nera MC 16 281 12174
Cascia PG 17 3217 15391
Poggiodomo PG 17 117 15508
Ussita MC 17 444 15952
Trevi PG 17 8469 24421
Sant'Anatolia di Narco PG 18 564 24985
Scheggino PG 20 461 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
54 Km SE of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 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 2020-09-22
00:17:22
42.86 12.96 11 2020-09-22
00:30:41
Sala Sismica INGV-Roma 83118451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-22 00:17:22 ± 0.03
Latitude 42.86 ± 0.00
Longitude 12.96 ± 0.00
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 83118451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 212
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 210
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28958
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 83118451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-22 00:30:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2020-09-22T00:19:13.93 3.0 undecidable manual Sn 3.51 0
IV.CMPR.HHZ. 2020-09-22T00:18:41.35 3.0 undecidable manual Sn -0.44 0
XK.GIZZ.HHZ. 2020-09-22T00:18:19.05 3.0 negative manual Pn -4.29 0
IV.IOCA.HHZ. 2020-09-22T00:18:13.25 3.0 undecidable manual Sn -4.46 0
IV.ROSPO.HHZ. 2020-09-22T00:18:11.35 3.0 undecidable manual Sn -0.31 0
MN.TRI.HHZ. 2020-09-22T00:18:09.98 3.0 negative manual Pn 3.9 0
IV.ROSPO.HHZ. 2020-09-22T00:17:46.90 3.0 undecidable manual Pn 0.74 0
IV.ASSB.HHZ. 2020-09-22T00:17:33.24 0.3 undecidable manual S 309 0.2842 50 -0.05 73
IV.CSP1.EHZ. 2020-09-22T00:17:33.57 0.3 undecidable manual S 38 0.2896 50 0.12 72
IV.MML1.HNE. 2020-09-22T00:17:32.27 0.3 undecidable manual S 2 0.25 50 0 74
IV.MMO1.EHZ. 2020-09-22T00:17:32.78 0.3 undecidable manual S 82 0.2707 50 -0.11 72
IV.LNSS.HHZ. 2020-09-22T00:17:32.74 0.3 undecidable manual S 167 0.2671 50 -0.05 73
IV.MC2.EHZ. 2020-09-22T00:17:30.25 0.3 undecidable manual S 74 0.1736 119 0.24 71
IV.GAVE.EHZ. 2020-09-22T00:17:30.08 0.3 undecidable manual S 196 0.1781 50 -0.07 74
IV.FDMO.HHZ. 2020-09-22T00:17:30.50 0.3 undecidable manual S 28 0.1961 50 -0.18 72
IV.MMO1.EHZ. 2020-09-22T00:17:28.45 0.3 undecidable manual P 82 0.2707 50 0.02 73
IT.MTCL.HGZ. 2020-09-22T00:17:28.54 0.3 undecidable manual S 12 0.1331 126 -0.14 73
IV.LNSS.HHZ. 2020-09-22T00:17:28.37 0.3 undecidable manual P 167 0.2671 50 0 74
IV.ASSB.HHZ. 2020-09-22T00:17:28.72 0.6 undecidable manual P 309 0.2842 50 0.06 48
IV.CSP1.EHZ. 2020-09-22T00:17:28.82 0.3 undecidable manual P 38 0.2896 50 0.06 72
IV.CESI.HHZ. 2020-09-22T00:17:28.99 0.3 undecidable manual S 344 0.1466 123 -0.13 74
IV.MML1.HNE. 2020-09-22T00:17:28.14 0.3 undecidable manual P 2 0.25 50 0.07 73
IV.NRCA.HHZ. 2020-09-22T00:17:27.98 0.1 undecidable manual S 105 0.1169 130 -0.2 97
IV.FDMO.HHZ. 2020-09-22T00:17:27.14 0.3 undecidable manual P 28 0.1961 50 -0.01 75
IV.CESI.HHZ. 2020-09-22T00:17:26.39 0.3 undecidable manual P 344 0.1466 123 0.14 73
IV.MC2.EHZ. 2020-09-22T00:17:26.84 0.3 undecidable manual P 74 0.1736 119 0.07 74
IT.MTCL.HGZ. 2020-09-22T00:17:26.05 0.3 undecidable manual P 12 0.1331 126 0.05 75
IV.GAVE.EHZ. 2020-09-22T00:17:26.97 0.3 undecidable manual P 196 0.1781 50 0.12 73
IV.NRCA.HHZ. 2020-09-22T00:17:25.77 0.1 undecidable manual P 105 0.1169 130 0.06 100
IV.SRES.HHZ. 2020-09-22T00:17:19.38 3.0 undecidable manual P -0.98 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0001815 0.12 AML other m 2020-09-22T00:17:28.13
IV.CESI.HHN. ML:1.1 0.0001026 0.16 AML other m 2020-09-22T00:17:29.24
IV.CESI.HHE. ML:0.9 6.49E-5 0.16 AML other m 2020-09-22T00:17:29.24
IV.GAVE.EHE. ML:1.1 8.2995E-5 0.24 AML other m 2020-09-22T00:17:30.32
IV.FDMO.HHN. ML:0.5 2.205E-5 0.12 AML other m 2020-09-22T00:17:30.69
IV.FDMO.HHE. ML:0.7 3.745E-5 0.18 AML other m 2020-09-22T00:17:30.93
IV.NRCA.HNE. ML:1.1 0.00011832695 0.47 AML other m 2020-09-22T00:17:28.37
IV.NRCA.HNN. ML:1.4 0.00026245045 0.91 AML other m 2020-09-22T00:17:28.14
IV.NRCA.HHE. ML:1 0.000103339375 0.1 AML other m 2020-09-22T00:17:28.77
IV.CESI.HNE. ML:1.2 0.000139636475 0.95 AML other m 2020-09-22T00:17:29.32
IV.GAVE.HNE. ML:1.2 0.0001279896 0.93 AML other m 2020-09-22T00:17:30.33
IV.GAVE.HNN. ML:1.4 0.00018864988 2.54 AML other m 2020-09-22T00:17:32.90
IV.GAVE.EHN. ML:0.9 5.482718E-5 1.54 AML other m 2020-09-22T00:17:30.47
IV.CSP1.EHE. ML:0.8 3.20346935E-5 2.22 AML other m 2020-09-22T00:17:33.64
IV.CSP1.EHN. ML:0.9 3.435998E-5 0.86 AML other m 2020-09-22T00:17:34.04
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