Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 25-07-2017 and time 18:42:41 (UTC) in region 5 km NW Visso (MC)

A magnitude ML 0.8 earthquake occured in region: 5 km NW Visso (MC), on

  • 25-07-2017 18:42:41 (UTC)
  • 25-07-2017 20:42:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9560, 13.0410 at 2 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Visso MC 5 1107 1107
Monte Cavallo MC 5 145 1252
Ussita MC 8 444 1696
Preci PG 9 724 2420
Pieve Torina MC 10 1458 3878
Fiordimonte MC 10 202 4080
Castelsantangelo sul Nera MC 11 281 4361
Sellano PG 12 1079 5440
Pievebovigliana MC 13 866 6306
Fiastra MC 13 559 6865
Acquacanina MC 14 121 6986
Muccia MC 14 915 7901
Serravalle di Chienti MC 15 1070 8971
Bolognola MC 16 142 9113
Cerreto di Spoleto PG 18 1075 10188
Norcia PG 19 4957 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
56 Km E of Perugia (166134 inhabitants)
63 Km NW of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
99 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.8 2017-07-25
18:42:41		 42.9557 13.0413 2 2017-07-25
18:47:53		 Sala Sismica INGV-Roma 48330191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-07-25 18:42:41 ± 0.09
Latitude 42.9557 ± 0.0027
Longitude 13.0413 ± 0.0049
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 48330191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29318
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 48330191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-07-25 18:47:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2017-07-25T18:43:06.82 3.0 undecidable manual S -0.04 0
IV.PE3.EHZ. 2017-07-25T18:42:54.83 3.0 undecidable manual P 0 0
IV.T1221.HNN. 2017-07-25T18:42:48.74 0.1 undecidable manual S 236 18.9699 97 0.28 94
IV.T1245.HHZ. 2017-07-25T18:42:47.83 0.3 undecidable manual S 133 16.1727 98 0.33 70
IV.ASSB.HHZ. 2017-07-25T18:42:47.60 0.6 negative manual P 287 32.5452 94 -0.76 40
IV.T1256.HNN. 2017-07-25T18:42:47.62 0.3 undecidable manual S 69 15.9729 98 0.18 72
IV.CESI.HHZ. 2017-07-25T18:42:46.68 0.3 undecidable manual S 296 12.3765 100 0.49 68
IV.NRCA.HHZ. 2017-07-25T18:42:46.88 0.3 undecidable manual S 156 14.7741 98 -0.13 73
IV.T1219.EHZ. 2017-07-25T18:42:45.99 0.3 undecidable manual S 345 11.4774 101 0.09 74
IV.T1256.HNN. 2017-07-25T18:42:45.08 0.1 undecidable manual P 69 15.9729 98 0.01 100
IV.T1221.HNN. 2017-07-25T18:42:45.40 0.3 undecidable manual P 236 18.9699 97 -0.26 71
IV.T1245.HHZ. 2017-07-25T18:42:45.25 0.1 undecidable manual P 133 16.1727 98 0.15 97
IV.FDMO.HHZ. 2017-07-25T18:42:45.41 0.1 undecidable manual S 22 9.6792 103 0.12 99
IV.T1216.EHZ. 2017-07-25T18:42:44.65 0.1 undecidable manual S 194 7.3815 107 0.13 99
IV.CESI.HHZ. 2017-07-25T18:42:44.30 0.3 positive manual P 296 12.3765 100 -0.05 75
IV.NRCA.HHZ. 2017-07-25T18:42:44.48 0.3 undecidable manual P 156 14.7741 98 -0.34 70
IV.MC2.EHZ. 2017-07-25T18:42:44.50 0.6 undecidable manual P 112 12.9759 100 0.04 50
IV.FDMO.HHZ. 2017-07-25T18:42:43.65 0.1 undecidable manual P 22 9.6792 103 -0.18 98
IV.T1219.EHZ. 2017-07-25T18:42:43.96 0.6 undecidable manual P 345 11.4774 101 -0.22 48
IV.T1216.EHZ. 2017-07-25T18:42:43.21 0.1 undecidable manual P 194 7.3815 107 -0.17 98
IV.FEMA.HNN. 2017-07-25T18:42:42.63 0.3 undecidable manual S 43 0.999 156 -0.04 77
IV.FEMA.HNN. 2017-07-25T18:42:42.14 0.1 undecidable manual P 43 0.999 156 -0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1245.HHE. ML:0.8 0.00005835 0.8 AML other m 2017-07-25T18:42:48.03
IV.T1245.HHN. ML:0.8 0.00007465 1.42 AML other m 2017-07-25T18:42:48.04
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download