Earthquake with magnitude of ML 0.9 on date 17-08-2019 and time 08:56:18 (Italy) in region 5 km W Arquata del Tronto (AP)

A magnitude ML 0.9 earthquake occured in region: 5 km W Arquata del Tronto (AP), on

  • 17-08-2019 06:56:18 (UTC)
  • 17-08-2019 08:56:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.24 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
Arquata del Tronto AP 5 1178 1178
Montegallo AP 10 523 1701
Accumoli RI 10 667 2368
Norcia PG 12 4957 7325
Castelsantangelo sul Nera MC 14 281 7606
Acquasanta Terme AP 14 2916 10522
Montemonaco AP 15 604 11126
Amatrice RI 18 2657 13783
Preci PG 19 724 14507
Ussita MC 19 444 14951
Montefortino FM 20 1178 16129
Cascia PG 20 3217 19346
Cittareale RI 20 482 19828

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
78 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
90 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Tivoli (56533 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 2019-08-17
06:56:18
42.79 13.24 11 2019-08-17
07:11:12
Sala Sismica INGV-Roma 71565511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-17 06:56:18 ± 0.04
Latitude 42.79 ± 0.00
Longitude 13.24 ± 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 71565511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 226
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41549
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
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 71565511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-17 07:11:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SENI.HNZ. 2019-08-17T06:56:35.18 3.0 negative manual P -0.04 0
IV.MF5.EHZ. 2019-08-17T06:56:29.26 0.6 undecidable manual S 39 0.259 90 0.71 41
IV.FDMO.HHZ. 2019-08-17T06:56:28.82 0.3 undecidable manual S 337 0.2725 90 -0.11 71
IV.LNSS.HHZ. 2019-08-17T06:56:28.01 0.3 undecidable manual S 218 0.2329 90 0.23 70
IT.MTCL.HGZ. 2019-08-17T06:56:28.53 0.3 undecidable manual S 320 0.2698 90 -0.33 68
IV.GIGS.HHZ. 2019-08-17T06:56:26.60 0.6 undecidable manual P 143 0.4155 90 -0.33 44
IV.T1299.EHZ. 2019-08-17T06:56:25.68 0.6 undecidable manual S 167 0.1565 90 0.19 48
IV.SMA1.EHZ. 2019-08-17T06:56:25.80 0.3 undecidable manual S 155 0.1727 90 -0.17 72
IV.TERO.HHZ. 2019-08-17T06:56:25.16 0.3 undecidable manual P 121 0.3157 90 -0.08 72
IV.RM33.EHZ. 2019-08-17T06:56:24.68 0.3 undecidable manual P 183 0.2779 90 0.09 71
IT.MTCL.HGZ. 2019-08-17T06:56:24.33 0.3 undecidable manual P 320 0.2698 90 -0.12 71
IV.FDMO.HHZ. 2019-08-17T06:56:24.28 0.3 undecidable manual P 337 0.2725 90 -0.21 70
IV.MC2.EHZ. 2019-08-17T06:56:24.92 0.3 undecidable manual S 345 0.1295 91 0.22 72
IV.MTRA.EHZ. 2019-08-17T06:56:24.28 0.1 undecidable manual S 104 0.1214 95 -0.19 97
IV.CSP1.EHZ. 2019-08-17T06:56:24.98 0.3 undecidable manual P 356 0.3058 90 -0.08 71
IV.MF5.EHZ. 2019-08-17T06:56:24.42 0.3 undecidable manual P 39 0.259 90 0.16 71
IV.MMO1.EHZ. 2019-08-17T06:56:24.68 0.3 undecidable manual S 31 0.1304 91 -0.06 74
IV.NRCA.HHZ. 2019-08-17T06:56:23.83 0.1 undecidable manual S 298 0.1007 113 -0.04 100
IV.LNSS.HHZ. 2019-08-17T06:56:23.82 0.3 undecidable manual P 218 0.2329 90 0 73
IV.MMO1.EHZ. 2019-08-17T06:56:22.10 0.1 undecidable manual P 31 0.1304 91 0.03 100
IV.T1299.EHZ. 2019-08-17T06:56:22.56 0.3 undecidable manual P 167 0.1565 90 0.06 74
IV.SMA1.EHZ. 2019-08-17T06:56:22.79 0.1 undecidable manual P 155 0.1727 90 0.01 99
IV.MC2.EHZ. 2019-08-17T06:56:22.11 0.1 undecidable manual P 345 0.1295 91 0.07 99
IV.MTRA.EHZ. 2019-08-17T06:56:21.94 0.1 undecidable manual P 104 0.1214 95 0.03 99
IV.NRCA.HHZ. 2019-08-17T06:56:21.68 0.1 undecidable manual P 298 0.1007 113 0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHN. ML:0 5.311959E-5 0.0608 AML other m 2019-08-17T06:56:30.64
IV.TERO.HHE. ML:0 5.6373315E-5 0.1408 AML other m 2019-08-17T06:56:30.80
IV.NRCA.HHE. ML:2 0.00102775275 0.1408 AML other m 2019-08-17T06:56:23.97
IV.NRCA.HHN. ML:1.8 0.0007276297 0.1408 AML other m 2019-08-17T06:56:24.02
IV.NRCA.HNE. ML:1.9 0.0009613608 0.1504 AML other m 2019-08-17T06:56:23.97
IV.NRCA.HNN. ML:1.7 0.0006387706 0.1504 AML other m 2019-08-17T06:56:24.02
IV.MTRA.EHE. ML:1.3 0.00018934 0.1184 AML other m 2019-08-17T06:56:24.72
IV.MTRA.EHN. ML:1.2 0.00016107135 0.3584 AML other m 2019-08-17T06:56:24.73
IV.MTRA.HNE. ML:1.3 0.0001989356 0.1088 AML other m 2019-08-17T06:56:24.66
IV.MTRA.HNN. ML:1.2 0.00016438945 0.3712 AML other m 2019-08-17T06:56:24.91
IV.SMA1.EHE. ML:0.9 5.651402E-5 0.2016 AML other m 2019-08-17T06:56:26.01
IV.SMA1.EHN. ML:0.6 3.223362E-5 0.0992 AML other m 2019-08-17T06:56:25.96
IV.FDMO.HHE. ML:0.5 1.397126E-5 0.2592 AML other m 2019-08-17T06:56:29.17
IV.FDMO.HHN. ML:0.6 2.178113E-5 0.3392 AML other m 2019-08-17T06:56:29.07
IV.RM33.EHE. ML:0.6 2.239731E-5 0.16 AML other m 2019-08-17T06:56:29.77
IV.RM33.EHN. ML:0.6 1.769775E-5 0.24 AML other m 2019-08-17T06:56:29.49
IV.CSP1.EHE. ML:0.9 2.763969E-5 0.4032 AML other m 2019-08-17T06:56:31.04
IV.CSP1.EHN. ML:0.8 2.3404496E-5 0.1824 AML other m 2019-08-17T06:56:31.69
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