Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 04-04-2017 and time 18:48:50 (Italy) in region 2 km SE Visso (MC)

A magnitude ML 1.8 earthquake occured in region: 2 km SE Visso (MC), on

  • 04-04-2017 16:48:50 (UTC)
  • 04-04-2017 18:48:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9180, 13.1110 at 10 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.

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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
Visso MC 2 1107 1107
Ussita MC 4 444 1551
Castelsantangelo sul Nera MC 4 281 1832
Preci PG 7 724 2556
Monte Cavallo MC 12 145 2701
Bolognola MC 13 142 2843
Fiordimonte MC 13 202 3045
Acquacanina MC 14 121 3166
Fiastra MC 14 559 3725
Norcia PG 14 4957 8682
Pieve Torina MC 15 1458 10140
Sellano PG 15 1079 11219
Pievebovigliana MC 16 866 12085
Montemonaco AP 18 604 12689
Montefortino FM 19 1178 13867
Muccia MC 19 915 14782
Cerreto di Spoleto PG 19 1075 15857
Montegallo AP 20 523 16380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Viterbo (67173 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 1.8 2017-04-04
16:48:50		 42.9183 13.1112 11 2017-04-04
16:56:55		 Sala Sismica INGV-Roma 43381151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-04 16:48:50 ± 0.04
Latitude 42.9183 ± 0.0018
Longitude 13.1112 ± 0.0025
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 43381151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 195
Semi-minor axis of confidence ellipse (meter) 173
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31027
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 43381151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-04 16:56:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2017-04-04T16:49:11.65 3.0 undecidable manual S 0.19 0
IV.PIEI.HHZ. 2017-04-04T16:49:05.30 3.0 undecidable manual P 0.33 0
IV.ATVO.HHZ. 2017-04-04T16:49:03.73 3.0 negative manual P -0.27 0
IV.T1299.EHZ. 2017-04-04T16:49:02.54 0.3 undecidable manual S 156 34.4433 50 0.38 67
IV.MURB.HHZ. 2017-04-04T16:49:01.43 3.0 negative manual P 0.05 0
IV.T1222.EHZ. 2017-04-04T16:49:01.21 3.0 undecidable manual P 0.2 0
IV.T1241.EHZ. 2017-04-04T16:49:00.01 0.3 undecidable manual S 105 26.9508 50 -0.13 72
IV.T1217.EHZ. 2017-04-04T16:49:00.03 0.3 undecidable manual S 213 27.1506 50 -0.18 71
IV.RM33.EHZ. 2017-04-04T16:48:59.51 3.0 positive manual P 0.41 0
IV.T1211.EHZ. 2017-04-04T16:48:59.34 3.0 positive manual P 0.01 0
IV.ATCC.EHZ. 2017-04-04T16:48:59.41 3.0 negative manual P 0.13 0
IV.MOMA.HHZ. 2017-04-04T16:48:59.06 3.0 negative manual P 0.08 0
IV.TERO.HHZ. 2017-04-04T16:48:59.64 3.0 negative manual P -0.37 0
IV.CAMP.HHZ. 2017-04-04T16:48:59.37 3.0 undecidable manual P -0.17 0
IV.T1220.EHZ. 2017-04-04T16:48:58.53 0.3 undecidable manual S 355 21.3675 116 -0.09 73
IV.MMO1.EHZ. 2017-04-04T16:48:57.22 0.3 undecidable manual S 97 17.6712 121 -0.27 71
IV.SNTG.HHZ. 2017-04-04T16:48:57.99 3.0 undecidable manual P 0.17 0
IV.T1299.EHZ. 2017-04-04T16:48:57.46 0.1 undecidable manual P 156 34.4433 50 0.29 92
IV.CESI.HHZ. 2017-04-04T16:48:57.99 0.3 undecidable manual S 300 19.3695 118 -0.01 75
IV.ASSB.HHZ. 2017-04-04T16:48:57.76 3.0 positive manual P -0.06 0
IV.T1212.EHZ. 2017-04-04T16:48:57.80 0.3 undecidable manual S 196 19.2696 119 -0.18 72
IV.T1219.EHZ. 2017-04-04T16:48:57.22 0.3 undecidable manual S 331 17.5713 121 -0.23 72
IV.T1214.EHZ. 2017-04-04T16:48:57.90 0.3 undecidable manual S 156 19.3695 118 -0.1 74
IV.FDMO.HHZ. 2017-04-04T16:48:56.22 0.3 undecidable manual S 352 13.2756 128 -0.01 76
IV.T1256.HHZ. 2017-04-04T16:48:56.35 0.3 undecidable manual S 44 13.4754 128 0.05 75
IV.T1220.EHZ. 2017-04-04T16:48:55.08 0.1 undecidable manual P 355 21.3675 116 -0.05 99
IV.NRCA.HNZ. 2017-04-04T16:48:55.04 0.3 undecidable manual S 178 9.3795 138 -0.22 73
IV.T1241.EHZ. 2017-04-04T16:48:55.87 0.1 positive manual P 105 26.9508 50 -0.14 96
IV.T1245.HHZ. 2017-04-04T16:48:55.38 0.3 undecidable manual S 138 9.2796 138 0.16 74
IV.T1217.EHZ. 2017-04-04T16:48:55.87 0.1 undecidable manual P 213 27.1506 50 -0.18 95
IV.T1219.EHZ. 2017-04-04T16:48:54.44 0.1 undecidable manual P 331 17.5713 121 -0.02 100
IV.T1214.EHZ. 2017-04-04T16:48:54.80 0.1 undecidable manual P 156 19.3695 118 0.03 99
IV.FEMA.HNZ. 2017-04-04T16:48:54.86 0.3 undecidable manual S 314 6.993 146 0.13 75
IV.MMO1.EHZ. 2017-04-04T16:48:54.44 0.1 positive manual P 97 17.6712 121 -0.04 99
IV.T1216.EHZ. 2017-04-04T16:48:54.95 0.3 undecidable manual S 248 8.0808 142 -0.01 76
IV.CESI.HHZ. 2017-04-04T16:48:54.80 0.1 undecidable manual P 300 19.3695 118 0.03 99
IV.T1212.EHZ. 2017-04-04T16:48:54.76 0.1 positive manual P 196 19.2696 119 0 100
IV.T1245.HHZ. 2017-04-04T16:48:53.28 0.1 undecidable manual P 138 9.2796 138 0.11 99
IV.FDMO.HHZ. 2017-04-04T16:48:53.80 0.1 undecidable manual P 352 13.2756 128 0.05 100
IV.FEMA.HNZ. 2017-04-04T16:48:53.11 0.1 undecidable manual P 314 6.993 146 0.22 98
IV.T1256.HHZ. 2017-04-04T16:48:53.89 0.1 positive manual P 44 13.4754 128 0.1 99
IV.T1216.EHZ. 2017-04-04T16:48:53.16 0.1 undecidable manual P 248 8.0808 142 0.14 99
IV.NRCA.HNZ. 2017-04-04T16:48:53.24 0.3 undecidable manual P 178 9.3795 138 0.05 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.8 0.0001985 0.26 AML other m 2017-04-04T16:49:03.58
IV.ASSB.HHN. ML:1.7 0.0001895 0.9 AML other m 2017-04-04T16:49:04.10
IV.ATCC.EHN. ML:1.3 0.0000555 0.88 AML other m 2017-04-04T16:49:07.50
IV.ATCC.EHE. ML:1.4 0.00006895 0.64 AML other m 2017-04-04T16:49:08.44
IV.CESI.HHE. ML:2.0 0.0007415000000000001 0.24 AML other m 2017-04-04T16:48:58.39
IV.CESI.HHN. ML:2.3 0.0014100000000000002 0.22 AML other m 2017-04-04T16:48:58.28
IV.FDMO.HHN. ML:1.7 0.000481 0.48 AML other m 2017-04-04T16:48:56.39
IV.FDMO.HHE. ML:1.7 0.0005825 0.74 AML other m 2017-04-04T16:48:56.25
IV.MOMA.HHE. ML:1.6 0.0001065 0.72 AML other m 2017-04-04T16:49:07.47
IV.MOMA.HHN. ML:1.3 0.0000625 0.14 AML other m 2017-04-04T16:49:07.30
IV.MURB.HHN. ML:1.7 0.0000927 0.18 AML other m 2017-04-04T16:49:12.83
IV.MURB.HHE. ML:1.6 0.00008690000000000001 1.64 AML other m 2017-04-04T16:49:14.83
IV.NRCA.HHN. ML:2.2 0.0020499999999999997 0.16 AML other m 2017-04-04T16:48:55.17
IV.NRCA.HNN. ML:2.2 0.0019100000000000002 0.14 AML other m 2017-04-04T16:48:55.10
IV.NRCA.HHE. ML:2.1 0.00156 1.86 AML other m 2017-04-04T16:48:55.03
IV.NRCA.HNE. ML:2.1 0.0014500000000000001 1.86 AML other m 2017-04-04T16:48:55.03
IV.RM33.EHE. ML:1.4 0.00006575 0.4 AML other m 2017-04-04T16:49:07.56
IV.RM33.EHN. ML:1.2 0.000046 0.84 AML other m 2017-04-04T16:49:07.60
IV.SNTG.HHN. ML:1.2 0.0000531 0.1 AML other m 2017-04-04T16:49:04.36
IV.SNTG.HHE. ML:1.2 0.00004775 0.94 AML other m 2017-04-04T16:49:03.87
IV.T1212.EHE. ML:1.8 0.000477 1.72 AML other m 2017-04-04T16:48:57.00
IV.T1212.EHN. ML:1.9 0.0005615 1.4 AML other m 2017-04-04T16:48:57.93
IV.T1214.EHE. ML:1.4 0.00019800000000000002 0.84 AML other m 2017-04-04T16:48:58.17
IV.T1214.EHN. ML:1.4 0.00019800000000000002 0.78 AML other m 2017-04-04T16:48:59.35
IV.T1216.EHE. ML:2.3 0.00276 1.72 AML other m 2017-04-04T16:48:54.99
IV.T1216.EHN. ML:2.4 0.00333 0.26 AML other m 2017-04-04T16:48:55.15
IV.T1219.HNE. ML:1.7 0.00041000000000000005 0.24 AML other m 2017-04-04T16:48:57.61
IV.T1219.EHE. ML:1.7 0.00042 0.24 AML other m 2017-04-04T16:48:57.61
IV.T1219.EHN. ML:1.9 0.0006405 0.3 AML other m 2017-04-04T16:48:57.48
IV.T1219.HNN. ML:1.9 0.000608 0.3 AML other m 2017-04-04T16:48:57.48
IV.T1220.EHE. ML:2.1 0.0008625000000000001 0.48 AML other m 2017-04-04T16:49:00.51
IV.T1220.EHN. ML:2.3 0.0014 0.24 AML other m 2017-04-04T16:49:00.40
IV.T1241.EHE. ML:1.9 0.000434 0.14 AML other m 2017-04-04T16:49:00.11
IV.T1241.HNE. ML:1.9 0.0004145 0.14 AML other m 2017-04-04T16:49:00.18
IV.T1241.EHN. ML:1.9 0.000397 0.8 AML other m 2017-04-04T16:49:00.09
IV.T1241.HNN. ML:1.9 0.0004625 0.78 AML other m 2017-04-04T16:49:00.10
IV.T1245.HNN. ML:2.0 0.0013700000000000001 0.32 AML other m 2017-04-04T16:48:56.27
IV.T1245.HHN. ML:2.0 0.001345 0.3 AML other m 2017-04-04T16:48:56.43
IV.T1245.HHE. ML:1.8 0.0008629999999999999 1.56 AML other m 2017-04-04T16:48:57.88
IV.T1245.HNE. ML:1.8 0.0008905 1.56 AML other m 2017-04-04T16:48:57.10
IV.T1256.HHE. ML:1.8 0.0006684999999999999 0.22 AML other m 2017-04-04T16:48:56.58
IV.T1256.HHN. ML:1.7 0.000509 0.62 AML other m 2017-04-04T16:48:56.82
IV.TERO.HHN. ML:1.3 0.000049000000000000005 0.88 AML other m 2017-04-04T16:49:08.71
IV.TERO.HHE. ML:1.3 0.000042499999999999996 0.44 AML other m 2017-04-04T16:49:08.46
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