Earthquake with magnitude of ML 1.2 on date 17-10-2020 and time 12:17:05 (Italy) in region 8 km W Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 8 km W Arquata del Tronto (AP), on

  • 17-10-2020 10:17:05 (UTC)
  • 17-10-2020 12:17:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.2 at 13 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
Arquata del Tronto AP 8 1178 1178
Norcia PG 9 4957 6135
Accumoli RI 11 667 6802
Montegallo AP 12 523 7325
Castelsantangelo sul Nera MC 13 281 7606
Montemonaco AP 16 604 8210
Preci PG 17 724 8934
Cascia PG 17 3217 12151
Acquasanta Terme AP 17 2916 15067
Ussita MC 18 444 15511
Visso MC 18 1107 16618
Amatrice RI 19 2657 19275
Cittareale RI 19 482 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
52 Km E of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
96 Km S of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 1.2 2020-10-17
10:17:05
42.79 13.2 13 2020-10-17
10:23:04
Sala Sismica INGV-Roma 83845611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 10:17:05 ± 0.06
Latitude 42.79 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83845611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 44
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33815
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 83845611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 10:23:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-10-17T10:17:39.19 3.0 undecidable manual S 0.05 0
IV.TERO.HHZ. 2020-10-17T10:17:18.21 0.6 undecidable manual S 119 0.3381 95 -0.19 47
IV.CESI.HHZ. 2020-10-17T10:17:17.68 0.6 undecidable manual S 315 0.3067 96 0.21 47
IV.MF5.EHZ. 2020-10-17T10:17:17.21 0.3 undecidable manual S 43 0.2743 97 0.69 63
IV.CSP1.EHZ. 2020-10-17T10:17:17.39 0.3 undecidable manual S 0 0.3031 96 0.03 74
IV.FDMO.HHZ. 2020-10-17T10:17:16.11 0.6 undecidable manual S 341 0.2617 97 -0.03 49
IV.RM33.EHZ. 2020-10-17T10:17:16.84 0.3 undecidable manual S 178 0.2797 97 0.18 72
IV.LNSS.HHZ. 2020-10-17T10:17:15.30 0.6 undecidable manual S 213 0.2203 100 0.38 46
IT.MTCL.HGE. 2020-10-17T10:17:15.71 0.3 undecidable manual S 324 0.2536 98 -0.18 72
IV.GAVE.EHZ. 2020-10-17T10:17:15.86 0.6 undecidable manual S 247 0.2455 98 0.2 48
IV.FEMA.HNE. 2020-10-17T10:17:14.56 0.6 undecidable manual S 327 0.2059 102 0.04 50
IV.OFFI.HHZ. 2020-10-17T10:17:14.76 3.0 undecidable manual P 0.52 0
IV.ARRO.EHZ. 2020-10-17T10:17:14.16 3.0 negative manual P -0.02 0
IV.SMA1.EHZ. 2020-10-17T10:17:13.64 0.6 undecidable manual S 148 0.1862 104 -0.29 47
IV.TERO.HHZ. 2020-10-17T10:17:13.17 0.3 undecidable manual P 119 0.3381 95 0.05 73
IV.MTRA.HNZ. 2020-10-17T10:17:12.48 0.6 undecidable manual S 102 0.1466 112 -0.34 47
IV.CSP1.EHZ. 2020-10-17T10:17:12.49 0.6 positive manual P 0 0.3031 96 -0.03 49
IV.MC2.EHZ. 2020-10-17T10:17:12.34 0.3 undecidable manual S 356 0.1232 119 0.14 74
IV.RM33.EHZ. 2020-10-17T10:17:12.06 0.1 undecidable manual P 178 0.2797 97 -0.05 98
IV.MMO1.EHZ. 2020-10-17T10:17:12.55 0.6 undecidable manual S 40 0.1439 113 -0.2 48
IV.MF5.EHZ. 2020-10-17T10:17:12.39 1.0 negative manual P 43 0.2743 97 0.36 23
IT.MTCL.HGE. 2020-10-17T10:17:11.58 0.1 undecidable manual P 324 0.2536 98 -0.09 98
IV.GAVE.EHZ. 2020-10-17T10:17:11.62 0.6 positive manual P 247 0.2455 98 0.09 49
IV.FDMO.HHZ. 2020-10-17T10:17:11.75 0.6 negative manual P 341 0.2617 97 -0.06 49
IV.CESI.HHZ. 2020-10-17T10:17:11.88 0.1 undecidable manual P 315 0.3067 96 -0.7 82
IV.LNSS.HHZ. 2020-10-17T10:17:11.15 0.1 undecidable manual P 213 0.2203 100 0.04 99
IV.NRCA.HNZ. 2020-10-17T10:17:10.96 0.6 undecidable manual S 305 0.0782 137 -0.2 50
IV.SMA1.EHZ. 2020-10-17T10:17:10.49 0.1 positive manual P 148 0.1862 104 -0.05 100
IV.FEMA.HNE. 2020-10-17T10:17:10.90 0.1 undecidable manual P 327 0.2059 102 0.02 100
IV.MMO1.EHZ. 2020-10-17T10:17:09.89 0.6 undecidable manual P 40 0.1439 113 0.04 51
IV.MTRA.HNZ. 2020-10-17T10:17:09.84 0.1 undecidable manual P 102 0.1466 112 -0.05 100
IV.MC2.EHZ. 2020-10-17T10:17:09.68 0.3 negative manual P 356 0.1232 119 0.14 74
IV.NRCA.HNZ. 2020-10-17T10:17:08.99 0.3 positive manual P 305 0.0782 137 0.05 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.000745 0.14 AML other m 2020-10-17T10:17:11.33
IV.NRCA.HHN. ML:1.6 0.000522 0.94 AML other m 2020-10-17T10:17:11.07
IV.MTRA.EHN. ML:0.9 6.255E-5 0.24 AML other m 2020-10-17T10:17:12.86
IV.MTRA.EHE. ML:1 7.55E-5 1.2 AML other m 2020-10-17T10:17:12.32
IV.SMA1.EHE. ML:1.3 0.0001255 0.24 AML other m 2020-10-17T10:17:13.97
IV.SMA1.EHN. ML:1.2 9.375E-5 1.36 AML other m 2020-10-17T10:17:14.73
IV.LNSS.HHN. ML:1.1 7.24E-5 0.94 AML other m 2020-10-17T10:17:15.97
IV.FDMO.HHN. ML:1.2 7.03E-5 0.2 AML other m 2020-10-17T10:17:16.32
IV.LNSS.HHE. ML:1.4 0.0001325 0.66 AML other m 2020-10-17T10:17:16.06
IV.GAVE.EHE. ML:1.4 0.000124 0.56 AML other m 2020-10-17T10:17:16.47
IV.FDMO.HHE. ML:1.1 6.715E-5 0.6 AML other m 2020-10-17T10:17:16.23
IV.GAVE.EHN. ML:1.3 9.53E-5 1.2 AML other m 2020-10-17T10:17:16.74
IV.RM33.EHN. ML:1.2 6.56E-5 0.3 AML other m 2020-10-17T10:17:17.12
IV.RM33.EHE. ML:1.2 7.625E-5 0.26 AML other m 2020-10-17T10:17:17.31
IV.CSP1.EHN. ML:1.5 0.0001405 0.44 AML other m 2020-10-17T10:17:18.22
IV.CESI.HHN. ML:1.2 6.125E-5 0.12 AML other m 2020-10-17T10:17:18.27
IV.TERO.HHN. ML:1 4.205E-5 0.1 AML other m 2020-10-17T10:17:18.70
IV.CSP1.EHE. ML:1.5 0.0001421 1.2 AML other m 2020-10-17T10:17:18.80
IV.TERO.HHE. ML:1 3.33E-5 0.62 AML other m 2020-10-17T10:17:19.54
IV.CESI.HHE. ML:0.9 3.34E-5 0.6 AML other m 2020-10-17T10:17:19.61
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