Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 20:30:32 (UTC) in region 4 km E Ussita (MC)

A magnitude ML 2.0 earthquake occured in region: 4 km E Ussita (MC), on

  • 31-10-2016 20:30:32 (UTC)
  • 31-10-2016 21:30:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9350, 13.1910 at 14 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
Bolognola MC 7 142 867
Visso MC 8 1107 1974
Acquacanina MC 11 121 2095
Fiastra MC 12 559 2654
Montemonaco AP 12 604 3258
Montefortino FM 12 1178 4436
Preci PG 14 724 5160
Fiordimonte MC 14 202 5362
Amandola FM 14 3629 8991
Sarnano MC 15 3264 12255
Montegallo AP 16 523 12778
Pieve Torina MC 17 1458 14236
Pievebovigliana MC 17 866 15102
Monte Cavallo MC 17 145 15247
Norcia PG 18 4957 20204
Comunanza AP 18 3166 23370
Gualdo MC 19 815 24185
Arquata del Tronto AP 20 1178 25363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
91 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 2.0 2016-10-31
20:30:32		 42.9348 13.1912 14 2019-02-12
14:03:26		 Bollettino Sismico Italiano INGV 50877741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 20:30:32 ± 0.1
Latitude 42.9348 ± 0.0045
Longitude 13.1912 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50877741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 530
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55668
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 22
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 5
Type of magnitude ML
Reference to an origin 50877741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-10-11 08:47:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FSSB.HHZ. 2016-10-31T20:30:58.99 3.0 undecidable manual S -0.53 0
IV.MPAG.EHZ. 2016-10-31T20:30:57.99 3.0 undecidable manual S -0.15 0
IV.SAMA.HHZ. 2016-10-31T20:30:55.02 3.0 undecidable manual P 2.04 0
IV.VCEL.EHZ. 2016-10-31T20:30:55.99 0.6 undecidable manual S -2.24 0
IV.VIVA.HHZ. 2016-10-31T20:30:54.56 3.0 undecidable manual P 1.73 0
IV.T1247.HHZ. 2016-10-31T20:30:48.99 0.6 undecidable manual S -2.16 0
IV.T1211.EHZ. 2016-10-31T20:30:47.99 0.6 undecidable manual S -1.99 0
IV.ASSB.HHZ. 2016-10-31T20:30:47.99 0.3 undecidable manual S 0.1 1.22
IV.T1217.EHZ. 2016-10-31T20:30:45.23 3.0 undecidable manual P 0
IV.LNSS.HHZ. 2016-10-31T20:30:45.99 0.3 undecidable manual S -0.47 1.22
IV.T1243.HHZ. 2016-10-31T20:30:44.27 0.1 undecidable manual S 142 33.744 98 -0.07 95
IV.GIGS.HHZ. 2016-10-31T20:30:43.61 0.3 positive manual P 150 61.7937 94 -0.18 66
IV.ARRO.EHZ. 2016-10-31T20:30:42.35 0.6 undecidable manual P 221 52.503 94 -0.01 46
IV.ATCC.EHZ. 2016-10-31T20:30:42.61 1.0 negative manual P 302 52.6029 94 0.24 22
IV.CAMP.HHZ. 2016-10-31T20:30:41.33 1.0 undecidable manual P 158 47.7189 95 -0.29 22
IV.RM33.EHZ. 2016-10-31T20:30:41.50 1.0 undecidable manual P 178 47.3193 95 -0.05 23
IV.OFFI.HHZ. 2016-10-31T20:30:41.32 3.0 positive manual P 1.26 0
IV.T1241.HNZ. 2016-10-31T20:30:41.00 0.6 undecidable manual S 114 21.3675 108 -0.12 48
IV.TERO.HHZ. 2016-10-31T20:30:41.49 0.6 undecidable manual P 136 48.2184 95 -0.21 45
IV.GUMA.HHZ. 2016-10-31T20:30:40.88 0.6 undecidable manual S 39 18.3705 113 0.51 45
IV.SMA1.EHZ. 2016-10-31T20:30:40.52 0.1 undecidable manual P 161 35.742 98 0.74 77
XO.AM05.EHZ. 2016-10-31T20:30:39.31 0.6 undecidable manual S 70 13.9749 123 -0.01 49
IV.T1243.HHZ. 2016-10-31T20:30:39.07 0.1 undecidable manual P 142 33.744 98 -0.41 89
IV.T1216.EHZ. 2016-10-31T20:30:39.52 0.6 undecidable manual S 251 14.874 121 0 49
IV.FDMO.HHZ. 2016-10-31T20:30:39.15 0.6 undecidable manual S 323 14.0748 123 -0.2 47
IV.T1245.HNZ. 2016-10-31T20:30:38.56 0.1 undecidable manual S 182 8.6802 140 0.29 95
IV.FEMA.HNZ. 2016-10-31T20:30:38.77 0.3 undecidable manual S 285 11.877 129 -0.1 73
IV.T1215.EHZ. 2016-10-31T20:30:38.82 3.0 positive manual P 0.34 0
IV.MMO1.HNZ. 2016-10-31T20:30:38.64 0.6 undecidable manual S 110 11.6772 130 -0.2 47
IV.T1256.HHZ. 2016-10-31T20:30:38.22 0.6 undecidable manual S 20 8.3805 141 -0.01 49
IV.T1241.HNZ. 2016-10-31T20:30:37.47 0.6 positive manual P 114 21.3675 108 -0.14 48
IV.GUMA.HHZ. 2016-10-31T20:30:37.40 0.1 negative manual P 39 18.3705 113 0.22 94
IV.FDMO.HHZ. 2016-10-31T20:30:36.40 0.1 undecidable manual P 323 14.0748 123 -0.2 95
IV.T1245.HNZ. 2016-10-31T20:30:36.04 0.1 undecidable manual P 182 8.6802 140 0.07 99
XO.AM05.EHZ. 2016-10-31T20:30:36.65 0.1 negative manual P 70 13.9749 123 0.07 98
IV.FEMA.HNZ. 2016-10-31T20:30:36.23 0.1 undecidable manual P 285 11.877 129 -0.09 98
IV.T1216.EHZ. 2016-10-31T20:30:36.67 0.1 undecidable manual P 251 14.874 121 -0.02 99
IV.MMO1.HNZ. 2016-10-31T20:30:36.21 0.1 undecidable manual P 110 11.6772 130 -0.09 97
IV.T1256.HHZ. 2016-10-31T20:30:35.96 0.1 undecidable manual P 20 8.3805 141 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1256.HHE. ML:1.9 0.0009414051999999999 0.2816 AML other m 2016-10-31T20:30:38.67
IV.T1245.HNE. ML:2.6 0.0043164075 0.1664 AML other m 2016-10-31T20:30:38.75
IV.FDMO.HHE. ML:1.7 0.0004321937 0.1408 AML other m 2016-10-31T20:30:39.39
XO.AM05.EHN. ML:1.2 0.00013795545 0.3968 AML other m 2016-10-31T20:30:39.44
IV.GUMA.HNE. ML:2.2 0.001151891 0.1664 AML other m 2016-10-31T20:30:41.29
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
Waveforms Seismic signals in miniseed + resp format Download