Earthquake with magnitude of ML 0.9 on date 20-08-2019 and time 09:25:00 (Italy) in region 1 km S Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km S Sellano (PG), on

  • 20-08-2019 07:25:00 (UTC)
  • 20-08-2019 09:25:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.88, 12.92 at 11 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 1 1079 1079
Cerreto di Spoleto PG 7 1075 2154
Preci PG 9 724 2878
Vallo di Nera PG 13 364 3242
Campello sul Clitunno PG 14 2442 5684
Trevi PG 14 8469 14153
Monte Cavallo MC 14 145 14298
Visso MC 15 1107 15405
Norcia PG 17 4957 20362
Sant'Anatolia di Narco PG 18 564 20926
Poggiodomo PG 19 117 21043
Castelsantangelo sul Nera MC 19 281 21324
Ussita MC 19 444 21768
Cascia PG 19 3217 24985
Scheggino PG 20 461 25446
Foligno PG 20 57155 82601

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
95 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
Rev 100 ML 0.9 2019-08-20
07:25:00
42.88 12.92 11 2019-08-20
07:35:20
Sala Sismica INGV-Roma 71642481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 07:25:00 ± 0.05
Latitude 42.88 ± 0.00
Longitude 12.92 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71642481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 361
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37592
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 71642481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 07:35:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2019-08-20T07:25:50.82 3.0 undecidable manual S 0.07 0
IV.RIBO.EHZ.01 2019-08-20T07:25:47.57 3.0 undecidable manual S 0.18 0
IT.VNF1.HGZ. 2019-08-20T07:25:30.34 3.0 positive manual Pg -0.06 0
IV.PE3.EHZ. 2019-08-20T07:25:26.50 3.0 undecidable manual S -6 0
IV.ARVD.HHZ. 2019-08-20T07:25:15.32 3.0 undecidable manual P 1.6 0
IV.CSP1.EHZ. 2019-08-20T07:25:11.57 0.6 undecidable manual S 44 0.295 50 0.03 51
IV.ASSB.HHZ. 2019-08-20T07:25:10.09 0.6 undecidable manual S 310 0.2536 50 -0.23 50
IV.MML1.HNZ. 2019-08-20T07:25:09.82 0.6 undecidable manual S 8 0.2365 50 0.01 52
IV.GAVE.EHZ. 2019-08-20T07:25:08.44 0.6 undecidable manual S 187 0.188 50 0.06 52
IV.FDMO.HHZ. 2019-08-20T07:25:08.40 0.6 undecidable manual S 37 0.197 50 -0.24 50
IV.MC2.EHZ. 2019-08-20T07:25:08.90 1.0 undecidable manual S 81 0.1961 50 0.29 25
IV.SNTG.HHZ. 2019-08-20T07:25:08.32 0.6 undecidable manual P 2 0.3759 50 0.18 49
IV.NRCA.HNZ. 2019-08-20T07:25:06.90 0.6 undecidable manual S 108 0.1466 123 -0.08 52
IV.CSP1.EHZ. 2019-08-20T07:25:06.70 1.0 negative manual P 44 0.295 50 -0.07 25
IV.CESI.HNZ. 2019-08-20T07:25:06.28 0.6 undecidable manual S 353 0.1259 127 -0.06 52
IV.MC2.EHZ. 2019-08-20T07:25:05.17 1.0 positive manual P 81 0.1961 50 0.09 26
IV.ASSB.HHZ. 2019-08-20T07:25:05.96 0.3 undecidable manual P 310 0.2536 50 -0.1 76
IV.GAVE.EHZ. 2019-08-20T07:25:05.06 0.3 undecidable manual P 187 0.188 50 0.12 77
IV.FDMO.HHZ. 2019-08-20T07:25:05.13 1.0 positive manual P 37 0.197 50 0.04 26
IV.MML1.HNZ. 2019-08-20T07:25:05.78 0.3 undecidable manual P 8 0.2365 50 0.02 78
IT.MTCL.HGZ. 2019-08-20T07:25:03.82 0.3 undecidable manual P 26 0.1268 127 0.05 79
IV.CESI.HNZ. 2019-08-20T07:25:03.92 0.3 undecidable manual P 353 0.1259 127 0.16 77
IV.FEMA.HNZ. 2019-08-20T07:25:03.94 0.3 undecidable manual P 48 0.1232 128 0.22 76
IV.NRCA.HNZ. 2019-08-20T07:25:03.85 0.1 undecidable manual P 108 0.1466 123 -0.28 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1 7.698375E-5 0.1824 AML other m 2019-08-20T07:25:08.53
IV.GAVE.EHN. ML:1 7.7150615E-5 0.16 AML other m 2019-08-20T07:25:08.91
IV.GAVE.HNE. ML:1.1 9.523495E-5 0.3008 AML other m 2019-08-20T07:25:09.65
IV.GAVE.HNN. ML:1.4 0.00019729945 0.6816 AML other m 2019-08-20T07:25:09.20
IV.FDMO.HHE. ML:0.8 4.1688225E-5 0.16 AML other m 2019-08-20T07:25:08.72
IV.FDMO.HHN. ML:0.8 4.5353735E-5 0.1984 AML other m 2019-08-20T07:25:08.47
IV.ASSB.HHE. ML:0.8 3.1436125E-5 0.0992 AML other m 2019-08-20T07:25:10.79
IV.ASSB.HHN. ML:0.7 2.548618E-5 0.1216 AML other m 2019-08-20T07:25:10.45
IV.CSP1.EHE. ML:1 3.9743015E-5 0.2816 AML other m 2019-08-20T07:25:12.24
IV.CSP1.EHN. ML:0.9 3.536199E-5 0.32 AML other m 2019-08-20T07:25:11.62
IV.SNTG.HHE. ML:0.5 8.603775E-6 0.1184 AML other m 2019-08-20T07:25:16.35
IV.SNTG.HHN. ML:0.5 1.0855798E-5 0.0992 AML other m 2019-08-20T07:25:14.80
IV.SNTG.HNE. ML:1.6 0.0001194989 0.7392 AML other m 2019-08-20T07:25:22.36
IV.SNTG.HNN. ML:1.7 0.0001809513 0.7808 AML other m 2019-08-20T07:25:18.21
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