Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 24-09-2020 and time 11:56:51 (Italy) in region 4 km NW Sellano (PG)

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

  • 24-09-2020 09:56:51 (UTC)
  • 24-09-2020 11:56:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9260, 12.9090 at 9 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
Sellano PG 4 1079 1079
Monte Cavallo MC 11 145 1224
Cerreto di Spoleto PG 12 1075 2299
Preci PG 12 724 3023
Trevi PG 14 8469 11492
Visso MC 15 1107 12599
Campello sul Clitunno PG 16 2442 15041
Serravalle di Chienti MC 17 1070 16111
Foligno PG 17 57155 73266
Pieve Torina MC 18 1458 74724
Vallo di Nera PG 18 364 75088
Ussita MC 19 444 75532
Fiordimonte MC 19 202 75734
Valtopina PG 20 1398 77132

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
47 Km E of Perugia (166134 inhabitants)
71 Km W of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 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 2020-09-24
09:56:51		 42.926 12.9092 9 2020-09-24
10:07:57		 Sala Sismica INGV-Roma 83194261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-24 09:56:51 ± 0.05
Latitude 42.9260 ± 0.0018
Longitude 12.9092 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83194261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 239
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 83194261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-24 10:07:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2020-09-24T09:59:00.33 3.0 undecidable manual Sn 1.1 0
MN.BNI.HHZ. 2020-09-24T09:58:59.15 3.0 undecidable manual Sg 17.08 0
IV.CMPR.HHZ. 2020-09-24T09:58:37.77 3.0 undecidable manual Sg 9.96 0
SL.KOGS.BHZ. 2020-09-24T09:58:35.72 3.0 undecidable manual Sn -4.32 0
IV.SENA.HHZ. 2020-09-24T09:58:18.14 3.0 undecidable manual Sn -3.39 0
IV.VBKN.HHZ. 2020-09-24T09:58:14.05 3.0 undecidable manual Sg 5.82 0
IT.LRNO.HNZ. 2020-09-24T09:58:05.31 3.0 undecidable manual Sg 8.58 0
IV.VOBA.HNZ. 2020-09-24T09:58:03.62 3.0 undecidable manual Sg 3.19 0
CR.STON.BHZ. 2020-09-24T09:57:58.52 3.0 positive manual Pg 13.13 0
IV.CMPR.HHZ. 2020-09-24T09:57:45.43 3.0 undecidable manual Pg 3.89 0
IV.NOCI.HHZ. 2020-09-24T09:57:45.59 3.0 negative manual Pn -4.64 0
GU.GBOS.HHZ. 2020-09-24T09:57:44.14 3.0 undecidable manual Pg 8.96 0
ST.RONC.EHZ. 2020-09-24T09:57:32.81 3.0 negative manual Pg 2.97 0
IV.PTRJ.HNZ. 2020-09-24T09:57:27.38 3.0 undecidable manual Pg 2.07 0
IV.CADC.HNZ. 2020-09-24T09:57:25.64 3.0 undecidable manual Pg -0.23 0
IV.MAGO.CHZ. 2020-09-24T09:57:17.34 3.0 undecidable manual S -6.07 0
IV.ATCC.EHZ. 2020-09-24T09:57:04.32 0.3 undecidable manual S 323 36.1416 50 0.15 70
IV.CSP1.EHZ. 2020-09-24T09:57:02.40 0.3 undecidable manual S 52 30.2475 106 -0.09 71
IV.GAVE.EHZ. 2020-09-24T09:57:01.09 0.3 undecidable manual S 183 25.9518 109 0.02 73
IV.ASSB.HHZ. 2020-09-24T09:57:00.37 0.3 undecidable manual S 303 24.0537 110 -0.09 72
IV.MML1.EHN. 2020-09-24T09:56:59.67 0.3 undecidable manual S 14 21.3675 112 0.08 73
IV.NRCA.HHZ. 2020-09-24T09:56:58.85 0.3 undecidable manual S 122 19.5693 114 -0.15 72
IV.ATCC.EHZ. 2020-09-24T09:56:58.70 0.1 undecidable manual P 323 36.1416 50 -0.14 93
IV.FDMO.HHZ. 2020-09-24T09:56:58.77 0.3 undecidable manual S 50 18.9699 115 -0.04 74
IV.CSP1.EHZ. 2020-09-24T09:56:57.67 0.1 undecidable manual P 52 30.2475 106 -0.2 93
IV.GAVE.EHZ. 2020-09-24T09:56:57.04 0.1 undecidable manual P 183 25.9518 109 -0.01 97
IV.MML1.EHN. 2020-09-24T09:56:56.18 0.1 undecidable manual P 14 21.3675 112 -0.02 98
IV.ASSB.HHZ. 2020-09-24T09:56:56.63 0.1 undecidable manual P 303 24.0537 110 -0.07 97
IV.FEMA.HNE. 2020-09-24T09:56:56.79 0.3 undecidable manual S 71 12.0768 126 0.04 74
IT.MTCL.HGZ. 2020-09-24T09:56:56.10 0.3 undecidable manual S 44 10.4784 130 -0.21 72
TV.SF04.EHZ. 2020-09-24T09:56:56.52 3.0 negative manual P 0.84 0
IV.MC2.EHZ. 2020-09-24T09:56:56.98 0.3 undecidable manual P 94 22.755 111 0.53 66
IV.FDMO.HHZ. 2020-09-24T09:56:55.71 0.1 undecidable manual P 50 18.9699 115 -0.04 98
IV.CESI.HHZ. 2020-09-24T09:56:55.99 0.3 undecidable manual S 358 8.7801 135 0.12 74
IV.NRCA.HHZ. 2020-09-24T09:56:55.79 0.1 undecidable manual P 122 19.5693 114 -0.07 97
IV.FEMA.HNE. 2020-09-24T09:56:54.74 0.1 undecidable manual P 71 12.0768 126 0.18 96
IT.MTCL.HGZ. 2020-09-24T09:56:54.32 0.1 undecidable manual P 44 10.4784 130 0.01 100
IV.CESI.HHZ. 2020-09-24T09:56:54.17 0.1 undecidable manual P 358 8.7801 135 0.12 98
IV.CPGN.EHZ. 2020-09-24T09:56:48.87 3.0 undecidable manual P -4.79 0
IV.CRE.HHZ. 2020-09-24T09:56:47.28 3.0 positive manual P -3.27 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.1 0.0002065 0.48 AML other m 2020-09-24T09:56:56.05
IV.CESI.HHE. ML:1.1 0.000175 0.7 AML other m 2020-09-24T09:56:57.67
IV.FDMO.HHN. ML:0.9 0.00007209999999999999 0.46 AML other m 2020-09-24T09:56:59.47
IV.FDMO.HHE. ML:0.9 0.00006575 0.52 AML other m 2020-09-24T09:56:59.89
IV.NRCA.HHE. ML:1.0 0.00007895 0.18 AML other m 2020-09-24T09:57:00.30
IV.ASSB.HHN. ML:1.0 0.00005925 1.14 AML other m 2020-09-24T09:57:00.11
IV.NRCA.HHN. ML:0.9 0.0000633 0.1 AML other m 2020-09-24T09:57:01.44
IV.ASSB.HHE. ML:0.9 0.000049199999999999997 0.56 AML other m 2020-09-24T09:57:01.44
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