Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 04-10-2017 and time 07:25:19 (Italy) in region 3 km E Ussita (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km E Ussita (MC), on

  • 04-10-2017 05:25:19 (UTC)
  • 04-10-2017 07:25:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9340, 13.1790 at 19 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ussita MC 4 444 444
Castelsantangelo sul Nera MC 5 281 725
Visso MC 7 1107 1832
Bolognola MC 8 142 1974
Acquacanina MC 11 121 2095
Fiastra MC 12 559 2654
Montemonaco AP 13 604 3258
Preci PG 13 724 3982
Montefortino FM 13 1178 5160
Fiordimonte MC 14 202 5362
Sarnano MC 15 3264 8626
Amandola FM 15 3629 12255
Monte Cavallo MC 16 145 12400
Pieve Torina MC 16 1458 13858
Montegallo AP 16 523 14381
Pievebovigliana MC 16 866 15247
Norcia PG 17 4957 20204
Comunanza AP 19 3166 23370
Muccia MC 20 915 24285
Gualdo MC 20 815 25100

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
67 Km E of Perugia (166134 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 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
Bulletin
Rev1000 		ML 0.8 2017-10-04
05:25:19		 42.9343 13.1792 19 2018-09-04
09:08:00		 Bollettino Sismico Italiano INGV 53715441
Reviewed
Rev100 		ML 0.8 2017-10-04
05:25:19		 42.9442 13.1765 18 2017-10-04
05:35:04		 Sala Sismica INGV-Roma 50676301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-10-04 05:25:19 ± 0.23
Latitude 42.9343 ± 0.0063
Longitude 13.1792 ± 0.0098
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53715441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 818
Semi-minor axis of confidence ellipse (meter) 387
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23832
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 53715441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-02-06 12:23:03

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 50676301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-10-04 05:35:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
AC.VLO.HHZ. 2017-10-04T05:26:56.99 3.0 negative manual Pg 14.69 0
CR.ZAG.BHZ. 2017-10-04T05:26:55.94 3.0 undecidable manual Sn 3.77 0
IV.MUCR.HHZ. 2017-10-04T05:26:51.71 3.0 positive manual Pg 14.36 0
SI.BOSI.HHZ. 2017-10-04T05:26:48.98 3.0 undecidable manual Sg 2.7 0
IV.IVGP.HHZ. 2017-10-04T05:26:48.12 3.0 negative manual Pg 15.05 0
IV.EUCT.HNZ. 2017-10-04T05:26:46.65 3.0 undecidable manual Sg 5.32 0
CH.MUGIO.HHZ. 2017-10-04T05:26:42.45 3.0 undecidable manual Sn -9.99 0
IV.LEOD.HNZ. 2017-10-04T05:26:38.46 3.0 undecidable manual Sg 5.37 0
IV.MELA.HHZ. 2017-10-04T05:26:28.99 3.0 undecidable manual Sn 0.67 0
IV.SBPO.HNZ. 2017-10-04T05:26:15.41 3.0 undecidable manual Sg -1.43 0
CR.STON.BHZ. 2017-10-04T05:26:11.40 3.0 undecidable manual Pn -1.68 0
CR.ZAG.BHZ. 2017-10-04T05:26:10.06 3.0 undecidable manual Pn 1.34 0
IV.CESI.HHZ. 2017-10-04T05:25:29.29 0.6 undecidable manual S 289 23.6541 120 0.35 47
IV.MTRA.HNZ. 2017-10-04T05:25:29.64 0.3 undecidable manual S 138 26.4513 117 0.04 74
IV.T1214.EHZ. 2017-10-04T05:25:28.24 0.6 undecidable manual S 173 19.5693 127 0.21 48
IV.CSP1.EHZ. 2017-10-04T05:25:27.35 0.6 undecidable manual S 7 17.5713 130 -0.27 48
IV.FDMO.HHZ. 2017-10-04T05:25:26.49 0.6 undecidable manual S 327 13.5753 139 -0.37 47
IV.NRCA.HNZ. 2017-10-04T05:25:26.47 0.3 undecidable manual S 205 12.3765 142 -0.18 74
IV.MC2.EHZ. 2017-10-04T05:25:25.48 0.6 undecidable manual S 162 2.6973 171 -0.11 51
IV.CESI.HHZ. 2017-10-04T05:25:24.68 0.3 undecidable manual P 289 23.6541 120 -0.28 71
IV.MTRA.HNZ. 2017-10-04T05:25:24.83 0.3 undecidable manual P 138 26.4513 117 -0.51 67
IV.T1214.EHZ. 2017-10-04T05:25:24.78 1.0 negative manual P 173 19.5693 127 0.35 23
IV.GUMA.HHZ. 2017-10-04T05:25:24.91 0.3 undecidable manual P 42 19.0698 128 0.54 67
IV.CSP1.EHZ. 2017-10-04T05:25:24.30 0.6 negative manual P 7 17.5713 130 0.1 50
IV.NRCA.HNZ. 2017-10-04T05:25:23.72 0.3 undecidable manual P 205 12.3765 142 0.08 75
IV.MC2.EHZ. 2017-10-04T05:25:23.21 0.1 negative manual P 162 2.6973 171 0.18 100
IV.FDMO.HHZ. 2017-10-04T05:25:23.76 0.3 undecidable manual P 327 13.5753 139 0 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.6 0.000021930089999999998 1.04 AML other m 2017-10-04T05:25:24.10
IV.FDMO.HHN. ML:1.0 0.00006335478 0.12 AML other m 2017-10-04T05:25:26.76
IV.FDMO.HHE. ML:0.8 0.00003820298499999999 0.14 AML other m 2017-10-04T05:25:27.16
IV.CSP1.EHN. ML:0.9 0.00005123859500000001 0.36 AML other m 2017-10-04T05:25:27.70
IV.CSP1.EHE. ML:0.7 0.00002858467 0.12 AML other m 2017-10-04T05:25:27.75
IV.CESI.HHN. ML:0.3 0.000012492695000000001 0.12 AML other m 2017-10-04T05:25:30.20
IV.T1214.HNN. ML:1.2 0.000093417195 0.864 AML other m 2017-10-04T05:25:30.06
IV.T1214.HNE. ML:1.2 0.00008779971500000001 0.912 AML other m 2017-10-04T05:25:41.06
IV.T1214.EHE. ML:0.7 0.00003142288 0.608 AML other m 2017-10-04T05:25:41.34
IV.T1214.EHN. ML:0.7 0.000031797041999999995 0.352 AML other m 2017-10-04T05:25:42.72
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