Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 19-09-2020 and time 01:08:56 (Italy) in region 4 km SE Sellano (PG)

A magnitude ML 1.8 earthquake occured in region: 4 km SE Sellano (PG), on

  • 18-09-2020 23:08:56 (UTC)
  • 19-09-2020 01:08:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8720, 12.9640 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Preci PG 6 724 1803
Cerreto di Spoleto PG 7 1075 2878
Visso MC 12 1107 3985
Norcia PG 14 4957 8942
Vallo di Nera PG 14 364 9306
Monte Cavallo MC 14 145 9451
Castelsantangelo sul Nera MC 16 281 9732
Campello sul Clitunno PG 16 2442 12174
Ussita MC 16 444 12618
Cascia PG 17 3217 15835
Trevi PG 18 8469 24304
Poggiodomo PG 18 117 24421
Sant'Anatolia di Narco PG 19 564 24985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
99 Km N of Guidonia Montecelio (88673 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
Bulletin
Rev1000 		ML 1.8 2020-09-18
23:08:56		 42.8718 12.9642 10 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87295751
Reviewed
Rev100 		ML 1.8 2020-09-18
23:08:56		 42.8728 12.9628 10 2020-09-18
23:17:52		 Sala Sismica INGV-Roma 83017751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 23:08:56 ± 0.05
Latitude 42.8718 ± 0.0027
Longitude 12.9642 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87295751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 287
Semi-minor axis of confidence ellipse (meter) 216
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 63
Number of defining phases 62
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.79230
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 87295751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-19 09:30:50

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 83017751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 23:17:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LMD.HHZ. 2020-09-18T23:09:45.43 3.0 undecidable manual S 1.52 0
IV.MPAG.EHZ. 2020-09-18T23:09:23.50 0.6 undecidable manual S 349 85.6476 50 1.01 32
IV.ARVD.HHZ. 2020-09-18T23:09:18.89 0.6 undecidable manual S 358 69.4749 50 0.71 38
IV.SSFR.HHZ. 2020-09-18T23:09:17.32 0.6 undecidable manual S 347 64.2912 50 0.51 41
IV.FOSV.HNE. 2020-09-18T23:09:13.09 0.6 undecidable manual S 341 49.7169 50 0.19 46
IV.EL6.EHZ. 2020-09-18T23:09:13.66 0.6 undecidable manual S 12 51.9036 50 0.15 46
IV.APEC.HHZ. 2020-09-18T23:09:12.69 0.1 undecidable manual P 330 87.9453 50 0.68 74
IV.RM33.EHZ. 2020-09-18T23:09:11.57 0.3 undecidable manual S 153 45.1215 50 -0.12 70
IV.MPAG.EHZ. 2020-09-18T23:09:11.59 0.1 undecidable manual P 349 85.6476 50 -0.05 88
IV.SMA1.EHN. 2020-09-18T23:09:11.03 0.6 undecidable manual S 131 40.4262 50 0.61 42
IV.NARO.HHZ. 2020-09-18T23:09:11.54 0.3 undecidable manual P 339 87.6456 50 -0.42 61
IV.MF5.EHZ. 2020-09-18T23:09:11.68 0.3 undecidable manual S 72 42.2244 50 0.76 59
IV.ATCC.EHZ. 2020-09-18T23:09:11.52 0.3 undecidable manual S 323 43.5231 50 0.25 68
IV.T1299.HNN. 2020-09-18T23:09:10.01 0.6 undecidable manual S 135 36.9297 50 0.5 44
IV.CESX.HHE. 2020-09-18T23:09:10.93 0.6 undecidable manual S 227 42.4242 50 -0.03 48
IV.ARRO.EHZ. 2020-09-18T23:09:09.20 0.3 undecidable manual S 207 36.2415 50 -0.12 71
IV.GUMA.HHZ. 2020-09-18T23:09:09.77 0.3 undecidable manual S 55 36.8298 50 0.31 68
IV.MTRA.EHE. 2020-09-18T23:09:09.42 0.6 undecidable manual S 110 37.4292 50 -0.21 47
IV.ARVD.HHZ. 2020-09-18T23:09:09.07 0.1 undecidable manual P 358 69.4749 50 -0.09 90
IV.SSFR.HHZ. 2020-09-18T23:09:08.17 0.1 undecidable manual P 347 64.2912 50 -0.19 89
IV.MOMA.HHZ. 2020-09-18T23:09:08.88 0.3 undecidable manual S 257 32.9448 50 0.45 67
IV.PF6.EHN. 2020-09-18T23:09:08.45 0.6 undecidable manual S 32 34.9428 50 -0.5 44
IV.LNSS.HHZ. 2020-09-18T23:09:07.46 0.6 undecidable manual S 168 30.4473 50 -0.31 46
IV.MNTT.EHZ. 2020-09-18T23:09:07.40 0.1 undecidable manual P 67 55.4001 50 0.4 86
IV.ASSB.HHZ. 2020-09-18T23:09:07.43 0.3 undecidable manual S 307 31.2465 50 -0.54 65
IV.CSP1.EHZ. 2020-09-18T23:09:07.63 0.6 undecidable manual S 39 31.2465 50 -0.35 46
IV.SEF1.HNN. 2020-09-18T23:09:07.25 0.6 undecidable manual S 357 30.5472 50 -0.54 44
IV.MMO1.EHN. 2020-09-18T23:09:07.02 0.3 undecidable manual S 84 29.6481 50 -0.52 66
IV.EL6.EHZ. 2020-09-18T23:09:06.20 0.1 undecidable manual P 12 51.9036 50 -0.26 90
IV.MML1.EHE. 2020-09-18T23:09:06.42 0.3 undecidable manual S 1 26.8509 110 -0.28 70
IV.MF5.EHZ. 2020-09-18T23:09:05.19 0.1 undecidable manual P 72 42.2244 50 0.22 92
IV.ATCC.EHZ. 2020-09-18T23:09:05.16 0.3 positive manual P 323 43.5231 50 -0.01 72
IV.FOSV.HNE. 2020-09-18T23:09:05.99 0.3 undecidable manual P 341 49.7169 50 -0.12 70
IV.RM33.EHZ. 2020-09-18T23:09:05.17 0.1 undecidable manual P 153 45.1215 50 -0.24 91
IV.MC2.EHZ. 2020-09-18T23:09:04.13 0.6 undecidable manual S 76 18.7701 117 -0.01 50
IV.FDMO.HHZ. 2020-09-18T23:09:04.52 0.6 undecidable manual S 29 20.7681 115 -0.25 47
IV.T1299.HNN. 2020-09-18T23:09:04.16 0.1 undecidable manual P 135 36.9297 50 0.01 97
IV.ARRO.EHZ. 2020-09-18T23:09:04.02 0.1 undecidable manual P 207 36.2415 50 -0.02 97
IV.MDAR.HNN. 2020-09-18T23:09:04.49 0.1 undecidable manual P 22 38.4282 50 0.12 95
IV.GAVE.EHZ. 2020-09-18T23:09:04.79 0.6 undecidable manual S 196 20.7681 115 0.04 50
IV.SMA1.EHN. 2020-09-18T23:09:04.70 0.1 undecidable manual P 131 40.4262 50 0.03 96
IV.CESX.HHE. 2020-09-18T23:09:04.49 0.3 undecidable manual P 227 42.4242 50 -0.5 65
IV.GUMA.HHZ. 2020-09-18T23:09:04.25 0.1 positive manual P 55 36.8298 50 0.12 95
IV.MTRA.EHE. 2020-09-18T23:09:04.08 0.1 undecidable manual P 110 37.4292 50 -0.14 94
IV.CSP1.EHZ. 2020-09-18T23:09:03.09 0.1 positive manual P 39 31.2465 50 -0.18 95
IV.SEF1.HNN. 2020-09-18T23:09:03.04 0.1 undecidable manual P 357 30.5472 50 -0.12 96
IV.MOMA.HHZ. 2020-09-18T23:09:03.78 0.1 undecidable manual P 257 32.9448 50 0.25 93
IV.PF6.EHN. 2020-09-18T23:09:03.46 0.3 undecidable manual P 32 34.9428 50 -0.37 68
IV.ASSB.HHZ. 2020-09-18T23:09:03.06 0.1 undecidable manual P 307 31.2465 50 -0.2 94
IV.CESI.HHZ. 2020-09-18T23:09:03.27 0.3 undecidable manual S 342 15.5733 122 0.12 74
IV.NRCA.HHZ. 2020-09-18T23:09:02.38 0.6 undecidable manual S 109 12.876 126 -0.02 50
IV.MMO1.EHN. 2020-09-18T23:09:02.74 0.1 undecidable manual P 84 29.6481 50 -0.28 93
IV.MML1.EHE. 2020-09-18T23:09:02.27 0.1 undecidable manual P 1 26.8509 110 -0.26 94
IV.FEMA.HNZ. 2020-09-18T23:09:02.04 0.6 undecidable manual S 35 12.1767 128 -0.16 49
IV.LNSS.HHZ. 2020-09-18T23:09:02.94 0.1 undecidable manual P 168 30.4473 50 -0.22 94
IT.MTCL.HGZ. 2020-09-18T23:09:02.25 0.6 undecidable manual S 12 13.875 125 -0.41 46
IV.GAVE.EHZ. 2020-09-18T23:09:01.57 0.1 undecidable manual P 196 20.7681 115 0.16 97
IV.MC2.EHZ. 2020-09-18T23:09:01.24 0.3 positive manual P 76 18.7701 117 0.19 72
IV.FDMO.HHZ. 2020-09-18T23:09:01.42 0.1 positive manual P 29 20.7681 115 0 100
IT.MTCL.HGZ. 2020-09-18T23:09:00.35 0.1 undecidable manual P 12 13.875 125 0.15 98
IV.CESI.HHZ. 2020-09-18T23:09:00.77 0.1 positive manual P 342 15.5733 122 0.29 95
IV.NRCA.HHZ. 2020-09-18T23:09:00.23 0.1 negative manual P 109 12.876 126 0.17 98
IV.FEMA.HNZ. 2020-09-18T23:09:00.21 0.1 undecidable manual P 35 12.1767 128 0.28 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNN. ML:2.1 0.001435 0.16 AML other m 2020-09-18T23:09:02.53
IV.NRCA.HHN. ML:2.2 0.0019500000000000001 0.14 AML other m 2020-09-18T23:09:02.53
IV.NRCA.HNN. ML:2.2 0.001795 0.16 AML other m 2020-09-18T23:09:02.53
IV.FEMA.HNE. ML:2.3 0.002345 0.1 AML other m 2020-09-18T23:09:02.57
IV.NRCA.HHE. ML:1.9 0.0009935 0.12 AML other m 2020-09-18T23:09:03.23
IV.NRCA.HNE. ML:1.9 0.0009299999999999999 0.12 AML other m 2020-09-18T23:09:03.23
IV.CESI.HHN. ML:2.0 0.000975 0.34 AML other m 2020-09-18T23:09:03.60
IV.CESI.HHE. ML:1.7 0.000516 0.08 AML other m 2020-09-18T23:09:03.79
IV.FDMO.HHE. ML:2.2 0.0010969999999999999 0.18 AML other m 2020-09-18T23:09:04.73
IV.FDMO.HHN. ML:2.0 0.0007045 1.22 AML other m 2020-09-18T23:09:04.22
IV.GAVE.EHE. ML:1.8 0.0004185 0.28 AML other m 2020-09-18T23:09:05.25
IV.GAVE.EHN. ML:1.7 0.0003695 1 AML other m 2020-09-18T23:09:05.41
IV.LNSS.HHE. ML:1.9 0.0003435 0.12 AML other m 2020-09-18T23:09:07.66
IV.LNSS.HHN. ML:1.8 0.0002845 1.8 AML other m 2020-09-18T23:09:08.90
IV.CSP1.EHE. ML:2.1 0.0006245000000000001 0.26 AML other m 2020-09-18T23:09:08.33
IV.CSP1.EHN. ML:2.0 0.000447 0.58 AML other m 2020-09-18T23:09:08.55
IV.MOMA.HHE. ML:1.3 0.00009195 0.28 AML other m 2020-09-18T23:09:09.25
IV.ARRO.EHE. ML:1.4 0.0000926 0.76 AML other m 2020-09-18T23:09:09.49
IV.ARRO.EHN. ML:1.3 0.0000767 0.22 AML other m 2020-09-18T23:09:09.59
IV.GUMA.HHE. ML:1.9 0.000283 0.3 AML other m 2020-09-18T23:09:10.01
IV.MOMA.HHN. ML:1.1 0.00005905 0.82 AML other m 2020-09-18T23:09:10.51
IV.GUMA.HNN. ML:2.2 0.0005665000000000001 0.4 AML other m 2020-09-18T23:09:10.60
IV.GUMA.HHN. ML:1.7 0.000206 1.42 AML other m 2020-09-18T23:09:12.20
IV.RM33.EHN. ML:1.3 0.00005325 0.78 AML other m 2020-09-18T23:09:12.57
IV.RM33.EHE. ML:1.4 0.00006925 1.5 AML other m 2020-09-18T23:09:13.08
IV.GUMA.HNE. ML:1.8 0.000253 1.34 AML other m 2020-09-18T23:09:16.14
IV.SSFR.HHN. ML:1.5 0.00006405 0.18 AML other m 2020-09-18T23:09:18.28
IV.SSFR.HHE. ML:1.6 0.00007225 0.16 AML other m 2020-09-18T23:09:19.44
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