Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-09-2020 and time 23:12:09 (Italy) in region 7 km NW Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 7 km NW Sellano (PG), on

  • 30-09-2020 21:12:09 (UTC)
  • 30-09-2020 23:12:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9300, 12.8680 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.

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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 7 1079 1079
Trevi PG 11 8469 9548
Cerreto di Spoleto PG 13 1075 10623
Monte Cavallo MC 13 145 10768
Foligno PG 14 57155 67923
Campello sul Clitunno PG 14 2442 70365
Preci PG 15 724 71089
Valtopina PG 17 1398 72487
Serravalle di Chienti MC 17 1070 73557
Spello PG 17 8645 82202
Vallo di Nera PG 18 364 82566
Montefalco PG 18 5679 88245
Visso MC 18 1107 89352
Pieve Torina MC 20 1458 90810
Castel Ritaldi PG 20 3278 94088

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
45 Km NE of Terni (111501 inhabitants)
75 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
100 Km SE of Arezzo (99543 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 0.9 2020-09-30
21:12:09		 42.9303 12.8683 10 2020-09-30
21:20:25		 Sala Sismica INGV-Roma 83396231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 21:12:09 ± 0.06
Latitude 42.9303 ± 0.0036
Longitude 12.8683 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83396231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33725
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 83396231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 21:20:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCIAR.HHZ. 2020-09-30T21:14:13.05 3.0 undecidable manual Sn -9.99 0
IV.CMPR.HHZ. 2020-09-30T21:13:50.09 3.0 undecidable manual Sg 6.19 0
SL.LJU.BHZ. 2020-09-30T21:13:45.07 3.0 undecidable manual Sg 7.33 0
MN.CLTB.HHZ. 2020-09-30T21:13:40.15 3.0 positive manual Pg 15.64 0
IV.AGST.EHZ. 2020-09-30T21:13:34.49 3.0 undecidable manual Pn -0.11 0
IV.IOCA.HHZ. 2020-09-30T21:13:16.16 3.0 undecidable manual Sn -4.12 0
IV.MCI.EHZ. 2020-09-30T21:13:07.86 3.0 undecidable manual Sg 3.6 0
IV.FIR.HHZ. 2020-09-30T21:12:31.13 3.0 undecidable manual Sn -2.72 0
IV.MMO1.EHZ. 2020-09-30T21:12:22.08 0.1 undecidable manual S 95 37.4292 50 -0.05 98
IV.ATCC.EHZ. 2020-09-30T21:12:21.15 0.1 undecidable manual S 327 33.744 50 -0.01 98
IV.MOMA.HHN. 2020-09-30T21:12:20.47 0.6 undecidable manual S 240 28.0497 50 0.85 38
IV.GAVE.EHZ. 2020-09-30T21:12:19.09 0.3 undecidable manual S 175 26.5512 110 -0.04 74
IV.ASSB.HHE. 2020-09-30T21:12:17.03 0.1 undecidable manual S 306 21.0678 114 -0.35 93
IV.FDMO.HHZ. 2020-09-30T21:12:17.32 0.3 undecidable manual S 56 21.3675 114 -0.14 73
IV.NRCA.HHZ. 2020-09-30T21:12:17.67 0.1 undecidable manual S 118 22.6551 113 -0.23 95
IV.ATCC.EHZ. 2020-09-30T21:12:16.06 0.1 undecidable manual P 327 33.744 50 -0.11 97
IV.MMO1.EHZ. 2020-09-30T21:12:16.67 0.6 positive manual P 95 37.4292 50 -0.06 49
IV.CSP1.EHZ. 2020-09-30T21:12:16.01 0.6 undecidable manual P 57 32.6451 50 0.01 49
IV.MOMA.HHN. 2020-09-30T21:12:15.12 0.1 undecidable manual P 240 28.0497 50 -0.16 96
IV.GAVE.EHZ. 2020-09-30T21:12:15.09 0.6 undecidable manual P 175 26.5512 110 0.1 49
IV.CESI.HHZ. 2020-09-30T21:12:14.04 0.1 undecidable manual S 20 8.7801 137 0.18 99
IV.FDMO.HHZ. 2020-09-30T21:12:14.01 0.1 undecidable manual P 56 21.3675 114 -0.03 100
IV.NRCA.HHZ. 2020-09-30T21:12:14.27 0.1 positive manual P 118 22.6551 113 -0.01 100
IV.PE3.EHZ. 2020-09-30T21:12:13.15 3.0 undecidable manual P -1.93 0
IV.ASSB.HHE. 2020-09-30T21:12:13.90 0.1 undecidable manual P 306 21.0678 114 -0.09 98
IV.CESI.HHZ. 2020-09-30T21:12:12.31 0.1 negative manual P 20 8.7801 137 0.36 95
IT.MTCL.HGE. 2020-09-30T21:12:12.75 0.1 undecidable manual P 56 12.7761 127 0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.0 0.0001269801 0.1536 AML other m 2020-09-30T21:12:14.16
IV.CESI.HHN. ML:1.1 0.00019083495 0.1536 AML other m 2020-09-30T21:12:14.43
IV.CESI.HNE. ML:1.0 0.00012488935 0.1664 AML other m 2020-09-30T21:12:14.15
IV.PE3.EHE. ML:1.5 0.000039522895 0.0768 AML other m 2020-09-30T21:12:13.86
IV.PE3.EHN. ML:1.8 0.000070279375 0.0768 AML other m 2020-09-30T21:12:14.09
IV.NRCA.HHE. ML:0.8 0.000037829 0.1024 AML other m 2020-09-30T21:12:18.60
IV.NRCA.HHN. ML:0.7 0.000034894835 0.0896 AML other m 2020-09-30T21:12:18.12
IV.GAVE.EHE. ML:0.7 0.00002826837 0.1792 AML other m 2020-09-30T21:12:20.35
IV.GAVE.EHN. ML:0.6 0.00002716346 0.1152 AML other m 2020-09-30T21:12:19.94
IV.ATCC.EHN. ML:0.7 0.000019059800000000003 0.2432 AML other m 2020-09-30T21:12:21.50
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