Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 19-09-2020 and time 10:37:19 (UTC) in region 5 km SW Sellano (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km SW Sellano (PG), on

  • 19-09-2020 10:37:19 (UTC)
  • 19-09-2020 12:37:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8670, 12.8770 at 11 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 5 1079 1079
Cerreto di Spoleto PG 6 1075 2154
Campello sul Clitunno PG 10 2442 4596
Trevi PG 11 8469 13065
Vallo di Nera PG 11 364 13429
Preci PG 13 724 14153
Sant'Anatolia di Narco PG 15 564 14717
Foligno PG 17 57155 71872
Castel Ritaldi PG 17 3278 75150
Scheggino PG 17 461 75611
Monte Cavallo MC 18 145 75756
Poggiodomo PG 18 117 75873
Spoleto PG 18 38218 114091
Montefalco PG 19 5679 119770
Visso MC 19 1107 120877
Norcia PG 20 4957 125834
Cascia PG 20 3217 129051

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
72 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km NE of Viterbo (67173 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
98 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
Bulletin
Rev1000 		ML 1.4 2020-09-19
10:37:19		 42.867 12.8767 11 2021-02-26
14:56:00		 Bollettino Sismico Italiano INGV 84063361
Reviewed
Rev100 		ML 1.5 2020-09-19
10:37:19		 42.8685 12.8813 10 2020-09-19
10:50:58		 Sala Sismica INGV-Roma 83027071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-19 10:37:19 ± 0.08
Latitude 42.8670 ± 0.0036
Longitude 12.8767 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84063361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 455
Semi-minor axis of confidence ellipse (meter) 445
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 40
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) 0.47214
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 84063361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-23 17:47:18

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 83027071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-19 10:50:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.JOPP.HHZ. 2020-09-19T10:38:42.11 3.0 undecidable manual Pg 20.07 0
IX.STN3.HHZ.02 2020-09-19T10:38:42.45 3.0 undecidable manual Sn -9.99 0
SI.BOSI.HHZ. 2020-09-19T10:38:19.50 3.0 undecidable manual Sg 5.73 0
MN.BNI.HHZ. 2020-09-19T10:38:17.94 3.0 undecidable manual Sn 1.94 0
IV.EMCN.HNZ. 2020-09-19T10:38:16.41 3.0 undecidable manual Pn -9.75 0
GU.SATI.HHZ. 2020-09-19T10:38:13.56 3.0 undecidable manual Sn 0.63 0
GU.REMY.HHZ. 2020-09-19T10:38:09.24 3.0 undecidable manual Sn -9.99 0
IV.SPS2.HHZ. 2020-09-19T10:38:06.47 3.0 positive manual Pn -9.99 0
IV.VULT.HHZ. 2020-09-19T10:38:06.27 3.0 undecidable manual Pg 8.79 0
IV.VARE.HHZ. 2020-09-19T10:37:57.81 3.0 undecidable manual Sn -6.44 0
IV.SGG.HHZ. 2020-09-19T10:37:50.57 3.0 undecidable manual Pg 6.94 0
IV.MILN.HNZ. 2020-09-19T10:37:46.36 3.0 undecidable manual Sn -5.89 0
MN.VSL.HHZ. 2020-09-19T10:37:46.00 3.0 negative manual Pn -4.63 0
IV.PTRJ.HHZ. 2020-09-19T10:37:43.89 3.0 negative manual Pn -1.16 0
IV.MURB.HHZ. 2020-09-19T10:37:36.51 0.6 undecidable manual S 327 52.4031 50 0.82 37
IV.MAGA.HHZ. 2020-09-19T10:37:32.76 3.0 undecidable manual Pg 7.11 0
IV.ATCC.EHZ. 2020-09-19T10:37:32.48 0.3 undecidable manual S 332 40.2264 50 0.05 71
IV.CSP1.EHZ. 2020-09-19T10:37:31.65 0.3 undecidable manual S 47 36.4413 50 0.2 69
IV.NDIM.HHZ. 2020-09-19T10:37:30.55 3.0 undecidable manual Sg -3.31 0
IV.FDMO.HHZ. 2020-09-19T10:37:28.24 0.3 undecidable manual S 42 25.4523 50 -0.25 70
IV.MURB.HHZ. 2020-09-19T10:37:28.85 0.6 undecidable manual P 327 52.4031 50 0.15 45
IV.ASSB.HHZ. 2020-09-19T10:37:28.18 0.3 undecidable manual S 318 26.3514 50 -0.55 65
IV.ATCC.EHZ. 2020-09-19T10:37:27.06 0.6 undecidable manual P 332 40.2264 50 0.23 46
IV.NRCA.HHZ. 2020-09-19T10:37:26.89 0.1 undecidable manual S 101 19.6692 119 -0.04 98
IV.GAVE.EHZ. 2020-09-19T10:37:26.74 0.3 undecidable manual S 176 19.4694 119 -0.12 73
IV.CSP1.EHZ. 2020-09-19T10:37:26.31 0.3 undecidable manual P 47 36.4413 50 0.05 72
IT.MTCL.HGZ. 2020-09-19T10:37:25.95 0.6 undecidable manual S 35 17.2716 122 -0.26 47
IV.CESI.HHZ. 2020-09-19T10:37:25.69 0.1 undecidable manual S 8 15.4734 125 0 100
IV.ASSB.HHZ. 2020-09-19T10:37:24.41 0.3 undecidable manual P 318 26.3514 50 -0.28 70
IV.FDMO.HHZ. 2020-09-19T10:37:24.52 0.3 undecidable manual P 42 25.4523 50 -0.03 73
IV.GAVE.EHZ. 2020-09-19T10:37:23.74 0.1 positive manual P 176 19.4694 119 0.13 97
IV.CESI.HHZ. 2020-09-19T10:37:23.02 0.1 undecidable manual P 8 15.4734 125 0.09 98
IT.MTCL.HGZ. 2020-09-19T10:37:23.30 0.3 undecidable manual P 35 17.2716 122 0.07 74
IV.NRCA.HHZ. 2020-09-19T10:37:23.68 0.1 undecidable manual P 101 19.6692 119 0.03 99
IV.ZCCA.HHZ. 2020-09-19T10:37:16.41 3.0 undecidable manual Sn -4.28 0
IV.BRSN.HNZ. 2020-09-19T10:37:09.05 3.0 negative manual P -4.57 0
IV.CASP.HHZ. 2020-09-19T10:36:59.72 3.0 undecidable manual P -4.01 0
IV.RIBO.EHZ.01 2020-09-19T10:36:56.50 3.0 negative manual P -5.84 0
IV.FROS.CHZ. 2020-09-19T10:36:54.96 3.0 positive manual P -5.19 0
IV.TRIF.CHZ. 2020-09-19T10:36:54.74 3.0 negative manual P -3.98 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNN. ML:1.4 0.000245878195 0.0896 AML other m 2020-09-19T10:37:26.25
IV.CESI.HNE. ML:1.4 0.00021112655 0.1024 AML other m 2020-09-19T10:37:26.01
IV.CESI.HHE. ML:1.4 0.00024621965 0.1216 AML other m 2020-09-19T10:37:26.06
IV.CESI.HHN. ML:1.5 0.00028299125000000005 0.096 AML other m 2020-09-19T10:37:26.20
IV.NRCA.HNN. ML:1.6 0.00028260125 0.1536 AML other m 2020-09-19T10:37:27.19
IV.NRCA.HHE. ML:1.3 0.00015841264999999998 0.096 AML other m 2020-09-19T10:37:27.59
IV.NRCA.HNE. ML:1.3 0.000144349535 0.096 AML other m 2020-09-19T10:37:27.59
IV.NRCA.HHN. ML:1.6 0.0003132196 0.16 AML other m 2020-09-19T10:37:27.19
IV.GAVE.HNE. ML:1.7 0.00037183145 0.128 AML other m 2020-09-19T10:37:27.41
IV.GAVE.HNN. ML:1.2 0.00012787987500000001 0.7104 AML other m 2020-09-19T10:37:33.15
IV.GAVE.EHN. ML:1.7 0.00040194475 0.16 AML other m 2020-09-19T10:37:28.05
IV.GAVE.EHE. ML:1.7 0.00034925565000000003 0.1152 AML other m 2020-09-19T10:37:27.64
IV.FDMO.HHN. ML:0.9 0.000043767730000000007 0.1408 AML other m 2020-09-19T10:37:29.39
IV.FDMO.HHE. ML:1.1 0.000064774795 0.1984 AML other m 2020-09-19T10:37:29.40
IV.CSP1.EHN. ML:1.4 0.00008860075000000001 0.1536 AML other m 2020-09-19T10:37:32.42
IV.CSP1.EHE. ML:1.5 0.000112606495 0.3584 AML other m 2020-09-19T10:37:32.46
IV.ATCC.EHN. ML:1.2 0.000049207645 0.1216 AML other m 2020-09-19T10:37:33.21
IV.ATCC.EHE. ML:1.1 0.000037587936000000005 0.1152 AML other m 2020-09-19T10:37:33.01
IV.MURB.HNE. ML:1.6 0.000089274705 0.5824 AML other m 2020-09-19T10:37:28.58
IV.MURB.HHE. ML:1.5 0.00007038401499999999 0.2624 AML other m 2020-09-19T10:37:38.06
IV.MURB.HHN. ML:1.4 0.000064975215 0.3008 AML other m 2020-09-19T10:37:38.94
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