Earthquake with magnitude of ML 0.0 on date 01-06-2017 and time 23:38:18 (Italy) in region 6 km W Arquata del Tronto (AP)

A magnitude ML 0.0 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

  • 01-06-2017 21:38:18 (UTC)
  • 01-06-2017 23:38:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.774, 13.224 at 4 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 6 1178 1178
Accumoli RI 9 667 1845
Norcia PG 11 4957 6802
Montegallo AP 12 523 7325
Castelsantangelo sul Nera MC 15 281 7606
Acquasanta Terme AP 15 2916 10522
Montemonaco AP 16 604 11126
Amatrice RI 17 2657 13783
Cittareale RI 18 482 14265
Cascia PG 18 3217 17482
Preci PG 19 724 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
53 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 NE of Guidonia Montecelio (88673 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
97 Km S of Ancona (100861 inhabitants)
100 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Md 0.9
ML 0.0
42.7738 13.2242 4 2017-06-01
Sala Sismica INGV-Roma 46123291
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2017-06-01 21:38:18 ± 0.65
Latitude 42.7738 ± 0.0243
Longitude 13.2242 ± 0.0159
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 46123291


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2746
Semi-minor axis of confidence ellipse (meter) 1305
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 353
Circular confidence region, given by single value of horizontal uncertainty (meter) 2750
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 260
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.1313
Epicentral distance of station farthest from the epicenter (degree) 0.31746
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information


Field Value
Value 0
Uncertainty 0
Num. used stations 0
Type of magnitude ML
Reference to an origin 46123291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-06-01 22:01:35


Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude Md
Reference to an origin 46123291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-06-01 22:01:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2017-06-01T21:38:30.20 0.3 undecidable manual S 118 0.3175 97 -0.58 65
IV.TERO.HHZ. 2017-06-01T21:38:25.18 0.3 undecidable manual P 118 0.3175 97 -0.41 69
IV.SMA1.EHZ. 2017-06-01T21:38:25.44 0.3 undecidable manual S 150 0.1646 103 0.44 70
IV.T1299.EHZ. 2017-06-01T21:38:24.09 0.3 undecidable manual S 163 0.1457 104 -0.19 74
IV.T1218.EHZ. 2017-06-01T21:38:23.30 0.1 undecidable manual S 218 0.1313 106 -0.44 94
IV.T1299.EHZ. 2017-06-01T21:38:22.14 0.3 undecidable manual P 163 0.1457 104 0.31 73
IV.SMA1.EHZ. 2017-06-01T21:38:22.82 0.1 undecidable manual P 150 0.1646 103 0.58 90
IV.T1218.EHZ. 2017-06-01T21:38:21.69 0.1 undecidable manual P 218 0.1313 106 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1218.EHZ. Md:0.8 6 END duration s
IV.T1299.EHZ. Md:1 7 END duration s
IV.SMA1.EHZ. Md:0.6 4 END duration s
IV.TERO.HHZ. Md:1.5 13 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download