Earthquake with magnitude of ML 1.2 on date 20-08-2019 and time 08:57:43 (Italy) in region 2 km E Sellano (PG)

A magnitude ML 1.2 earthquake occured in region: 2 km E Sellano (PG), on

  • 20-08-2019 06:57:43 (UTC)
  • 20-08-2019 08:57:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.89, 12.95 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 2 1079 1079
Preci PG 7 724 1803
Cerreto di Spoleto PG 8 1075 2878
Visso MC 12 1107 3985
Monte Cavallo MC 13 145 4130
Vallo di Nera PG 15 364 4494
Norcia PG 16 4957 9451
Campello sul Clitunno PG 16 2442 11893
Trevi PG 17 8469 20362
Castelsantangelo sul Nera MC 17 281 20643
Ussita MC 17 444 21087
Pieve Torina MC 19 1458 22545
Sant'Anatolia di Narco PG 19 564 23109
Cascia PG 19 3217 26326
Poggiodomo PG 20 117 26443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
100 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 1.2 2019-08-20
06:57:43
42.89 12.95 11 2019-08-20
07:11:04
Sala Sismica INGV-Roma 71642191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 06:57:43 ± 0.08
Latitude 42.89 ± 0.00
Longitude 12.95 ± 0.01
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 71642191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 385
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.27609
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 16
Type of magnitude ML
Reference to an origin 71642191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 07:11:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.PUK.HHZ. 2019-08-20T06:58:56.02 3.0 undecidable manual Pg 5.96 0
IV.ILLI.HHZ. 2019-08-20T06:58:46.54 3.0 positive manual Pg 1.62 0
IV.SPS2.HHZ. 2019-08-20T06:58:45.40 3.0 negative manual Pg 5.26 0
IV.ECTS.EHZ. 2019-08-20T06:58:45.08 3.0 undecidable manual Pn -7.79 0
MN.CLTB.HHZ. 2019-08-20T06:58:40.65 3.0 undecidable manual Pn -9.99 0
IV.CIGN.HHZ. 2019-08-20T06:58:26.65 3.0 undecidable manual Sg 0.84 0
IV.TDS.HHZ. 2019-08-20T06:58:25.38 3.0 undecidable manual Pn -9.99 0
GU.GSCL.HHZ. 2019-08-20T06:58:23.52 3.0 undecidable manual Pg 6.1 0
IV.TOLF.HHZ. 2019-08-20T06:58:19.54 3.0 undecidable manual Sg 3.01 0
IV.PE3.EHZ. 2019-08-20T06:58:14.35 3.0 undecidable manual Sn 2 0
IV.RIBO.EHZ.01 2019-08-20T06:58:01.38 3.0 positive manual Pn -4.74 0
IV.SACS.HNZ. 2019-08-20T06:57:54.02 3.0 undecidable manual Pn -3.43 0
IV.CSP1.EHZ. 2019-08-20T06:57:53.69 0.6 undecidable manual S 42 0.2761 50 -0.18 63
IV.MML1.EHE. 2019-08-20T06:57:52.41 0.6 undecidable manual S 4 0.2266 50 0.03 65
IV.MC2.EHZ. 2019-08-20T06:57:51.64 0.6 undecidable manual S 82 0.1763 118 0.82 52
IV.GAVE.EHZ. 2019-08-20T06:57:51.57 0.6 undecidable manual S 192 0.1996 50 -0.01 66
IV.FDMO.HHZ. 2019-08-20T06:57:50.59 0.6 undecidable manual S 34 0.1799 118 -0.34 62
IV.CSP1.EHZ. 2019-08-20T06:57:49.58 0.6 undecidable manual P 42 0.2761 50 0.26 61
IV.NRCA.HNZ. 2019-08-20T06:57:49.03 0.6 undecidable manual S 114 0.1322 126 -0.33 62
IV.CESI.HHE. 2019-08-20T06:57:49.17 0.6 undecidable manual S 344 0.1223 128 0.12 65
IT.MTCL.HGE. 2019-08-20T06:57:48.55 0.6 undecidable manual S 19 0.1124 130 -0.22 64
IV.MML1.EHE. 2019-08-20T06:57:48.40 0.6 undecidable manual P 4 0.2266 50 -0.06 65
IV.FEMA.HNZ. 2019-08-20T06:57:48.50 0.6 undecidable manual S 44 0.1043 132 -0.04 67
IV.FDMO.HHZ. 2019-08-20T06:57:47.51 0.6 positive manual P 34 0.1799 118 -0.11 65
IV.MC2.EHZ. 2019-08-20T06:57:47.52 0.6 negative manual P 82 0.1763 118 -0.04 66
IV.GAVE.EHZ. 2019-08-20T06:57:47.96 0.3 positive manual P 192 0.1996 50 -0.04 98
IV.CESI.HHE. 2019-08-20T06:57:46.69 0.3 undecidable manual P 344 0.1223 128 0.15 97
IV.FEMA.HNZ. 2019-08-20T06:57:46.35 0.6 undecidable manual P 44 0.1043 132 0.11 66
IV.T1299.EHZ. 2019-08-20T06:57:46.26 3.0 undecidable manual P 0
IT.MTCL.HGE. 2019-08-20T06:57:46.39 0.3 undecidable manual P 19 0.1124 130 0.02 100
IV.RM33.HNZ. 2019-08-20T06:57:46.84 3.0 undecidable manual P -1.31 0
IV.NRCA.HNZ. 2019-08-20T06:57:46.64 0.3 undecidable manual P 114 0.1322 126 -0.07 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.7 0.000138910605 0.0992 AML other m 2019-08-20T06:57:52.92
IV.RM33.EHN. ML:1.3 5.8854805E-5 0.0608 AML other m 2019-08-20T06:57:52.91
IV.RM33.HNE. ML:1.7 0.0001408167 0.0608 AML other m 2019-08-20T06:57:51.24
IV.RM33.HNN. ML:1.6 0.00012321797 0.6304 AML other m 2019-08-20T06:57:55.03
IV.FDMO.HHE. ML:1 6.9140655E-5 0.1792 AML other m 2019-08-20T06:57:50.65
IV.FDMO.HHN. ML:1 7.2998065E-5 0.16 AML other m 2019-08-20T06:57:50.73
IV.GAVE.EHE. ML:0.8 4.083422E-5 0.0992 AML other m 2019-08-20T06:57:52.24
IV.GAVE.EHN. ML:0.7 3.029085E-5 0.0992 AML other m 2019-08-20T06:57:51.85
IV.GAVE.HNE. ML:1.2 0.00011497834 0.7488 AML other m 2019-08-20T06:58:03.58
IV.GAVE.HNN. ML:1.4 0.00016928485 0.6688 AML other m 2019-08-20T06:57:54.11
IV.CSP1.EHE. ML:1 4.305672E-5 0.24 AML other m 2019-08-20T06:57:54.41
IV.CSP1.EHN. ML:0.8 2.9537165E-5 0.2176 AML other m 2019-08-20T06:57:54.41
IV.SACS.HHE. ML:1.1 1.26923235E-5 0.4608 AML other m 2019-08-20T06:57:59.61
IV.SACS.HHN. ML:0.9 9.1676355E-6 0.4576 AML other m 2019-08-20T06:58:07.31
IV.SACS.HNE. ML:3.4 0.0032148866 0.72 AML other m 2019-08-20T06:58:18.09
IV.SACS.HNN. ML:3.4 0.0030636155 0.7584 AML other m 2019-08-20T06:58:18.10
IV.RIBO.EHE.01 ML:1.8 2.928846E-5 0.08 AML other m 2019-08-20T06:58:06.45
IV.ILLI.HHN. ML:4.7 0.001317672 0.8992 AML other m 2019-08-20T06:58:53.92
IV.ILLI.HHE. ML:4.6 0.00103168475 0.8992 AML other m 2019-08-20T06:58:55.44
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