Earthquake with magnitude of ML 1.8 on date 19-09-2020 and time 01:08:56 (Italy) in region 3 km SE Sellano (PG)

A magnitude ML 1.8 earthquake occured in region: 3 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) 42.87, 12.96 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.

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 3 1079 1079
Preci PG 6 724 1803
Cerreto di Spoleto PG 7 1075 2878
Visso MC 12 1107 3985
Monte Cavallo MC 14 145 4130
Norcia PG 14 4957 9087
Vallo di Nera PG 14 364 9451
Castelsantangelo sul Nera MC 16 281 9732
Campello sul Clitunno PG 16 2442 12174
Ussita MC 17 444 12618
Trevi PG 18 8469 21087
Cascia PG 18 3217 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
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 1.8 2020-09-18
23:08:56
42.87 12.96 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 42.87 ± 0.00
Longitude 12.96 ± 0.00
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 83017751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 303
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40829
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 17
Magnitude information

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 Takeoff_angle Residual Weight
IV.LMD.HHZ. 2020-09-18T23:09:45.43 3.0 undecidable manual S 1.52 0
IV.APEC.HHZ. 2020-09-18T23:09:25.81 3.0 undecidable manual S 0.7 0
IV.MPAG.EHZ. 2020-09-18T23:09:24.55 3.0 undecidable manual S 0.27 0
IV.NARO.HHZ. 2020-09-18T23:09:24.78 3.0 undecidable manual S -0.17 0
IV.ARVD.HHZ. 2020-09-18T23:09:19.18 3.0 undecidable manual S -0.24 0
IV.MF5.EHZ. 2020-09-18T23:09:11.68 0.3 undecidable manual S 72 0.3813 50 0.72 60
IV.ATCC.EHZ. 2020-09-18T23:09:11.52 0.3 undecidable manual S 323 0.3912 50 0.27 68
IV.RM33.EHZ. 2020-09-18T23:09:11.57 0.3 undecidable manual S 153 0.4083 50 -0.18 69
IV.ARRO.EHZ. 2020-09-18T23:09:09.20 0.3 undecidable manual S 206 0.3274 50 -0.16 71
IV.GUMA.HHZ. 2020-09-18T23:09:09.77 0.3 undecidable manual S 55 0.3318 50 0.28 69
IV.ARVD.HHZ. 2020-09-18T23:09:09.09 3.0 positive manual P -0.42 0
IV.MNTT.EHZ. 2020-09-18T23:09:08.52 3.0 negative manual P 1.51 0
IV.MOMA.HHZ. 2020-09-18T23:09:08.88 0.3 undecidable manual S 257 0.2959 50 0.45 67
IV.SSFR.HHZ. 2020-09-18T23:09:08.35 3.0 negative manual P -0.35 0
IV.CSP1.EHZ. 2020-09-18T23:09:07.63 0.6 undecidable manual S 39 0.2815 50 -0.37 46
IV.ASSB.HHZ. 2020-09-18T23:09:07.57 0.3 undecidable manual S 307 0.2797 50 -0.38 68
IV.LNSS.HHZ. 2020-09-18T23:09:07.46 0.6 undecidable manual S 168 0.2761 50 -0.38 46
IV.MML1.EHE. 2020-09-18T23:09:06.42 0.3 undecidable manual S 2 0.2401 110 -0.27 70
IV.EL6.EHZ. 2020-09-18T23:09:06.35 3.0 positive manual P -0.2 0
IV.RM33.EHZ. 2020-09-18T23:09:05.23 0.1 undecidable manual P 153 0.4083 50 -0.23 92
IV.MF5.EHZ. 2020-09-18T23:09:05.15 1.0 undecidable manual P 72 0.3813 50 0.15 23
IV.ATCC.EHZ. 2020-09-18T23:09:05.16 0.3 positive manual P 323 0.3912 50 -0.02 72
IV.FDMO.HHZ. 2020-09-18T23:09:04.52 0.6 undecidable manual S 29 0.1871 115 -0.26 48
IV.GUMA.HHZ. 2020-09-18T23:09:04.25 0.1 positive manual P 55 0.3318 50 0.09 96
IV.GAVE.EHZ. 2020-09-18T23:09:04.79 0.6 undecidable manual S 196 0.1871 115 -0.01 50
IV.MC2.EHZ. 2020-09-18T23:09:04.13 0.6 undecidable manual S 77 0.17 117 -0.06 50
IV.ARRO.EHZ. 2020-09-18T23:09:04.09 0.6 negative manual P 206 0.3274 50 0.01 49
IV.LNSS.HHZ. 2020-09-18T23:09:03.04 0.3 undecidable manual P 168 0.2761 50 -0.16 72
IV.CSP1.EHZ. 2020-09-18T23:09:03.09 0.1 positive manual P 39 0.2815 50 -0.2 95
IV.CESI.HHZ. 2020-09-18T23:09:03.27 0.3 undecidable manual S 342 0.1385 122 0.14 74
IV.MOMA.HHZ. 2020-09-18T23:09:03.98 1.0 undecidable manual P 257 0.2959 50 0.43 22
IV.ASSB.HHZ. 2020-09-18T23:09:03.06 0.1 undecidable manual P 307 0.2797 50 -0.2 94
IV.FEMA.HNZ. 2020-09-18T23:09:02.04 0.6 undecidable manual S 35 0.1097 128 -0.17 49
IT.MTCL.HGZ. 2020-09-18T23:09:02.25 0.6 undecidable manual S 12 0.1241 125 -0.41 47
IV.MML1.EHE. 2020-09-18T23:09:02.42 0.1 undecidable manual P 2 0.2401 110 -0.12 97
IV.NRCA.HHZ. 2020-09-18T23:09:02.38 0.6 undecidable manual S 109 0.1178 126 -0.08 50
IV.MC2.EHZ. 2020-09-18T23:09:01.24 0.6 positive manual P 77 0.17 117 0.15 49
IV.FDMO.HHZ. 2020-09-18T23:09:01.42 0.1 positive manual P 29 0.1871 115 -0.01 100
IV.GAVE.EHZ. 2020-09-18T23:09:01.64 0.1 positive manual P 196 0.1871 115 0.2 96
IV.NRCA.HHZ. 2020-09-18T23:09:00.23 0.1 negative manual P 109 0.1178 126 0.13 99
IV.FEMA.HNZ. 2020-09-18T23:09:00.26 0.6 undecidable manual P 35 0.1097 128 0.31 48
IT.MTCL.HGZ. 2020-09-18T23:09:00.40 0.6 positive manual P 12 0.1241 125 0.19 49
IV.CESI.HHZ. 2020-09-18T23:09:00.77 0.1 positive manual P 342 0.1385 122 0.29 95
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 0.00195 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.HNE. ML:1.9 0.00093 0.12 AML other m 2020-09-18T23:09:03.23
IV.NRCA.HHE. ML:1.9 0.0009935 0.12 AML other m 2020-09-18T23:09:03.23
IV.CESI.HHN. ML:2 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 0.001097 0.18 AML other m 2020-09-18T23:09:04.73
IV.FDMO.HHN. ML:2 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 0.0006245 0.26 AML other m 2020-09-18T23:09:08.33
IV.CSP1.EHN. ML:2 0.000447 0.58 AML other m 2020-09-18T23:09:08.55
IV.MOMA.HHE. ML:1.3 9.195E-5 0.28 AML other m 2020-09-18T23:09:09.25
IV.ARRO.EHE. ML:1.4 9.26E-5 0.76 AML other m 2020-09-18T23:09:09.49
IV.ARRO.EHN. ML:1.3 7.67E-5 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 5.905E-5 0.82 AML other m 2020-09-18T23:09:10.51
IV.GUMA.HNN. ML:2.2 0.0005665 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 5.325E-5 0.78 AML other m 2020-09-18T23:09:12.57
IV.RM33.EHE. ML:1.4 6.925E-5 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 6.405E-5 0.18 AML other m 2020-09-18T23:09:18.28
IV.SSFR.HHE. ML:1.6 7.225E-5 0.16 AML other m 2020-09-18T23:09:19.44
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