Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 16-02-2018 and time 08:50:10 (Italy) in region 5 km SW Prali (TO)

A magnitude ML 2.2 earthquake occured in region: 5 km SW Prali (TO), on

  • 16-02-2018 07:50:10 (UTC)
  • 16-02-2018 08:50:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.8620, 7.0080 at 11 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
Prali TO 5 246 246
Salza di Pinerolo TO 10 75 321
Bobbio Pellice TO 11 563 884
Massello TO 12 51 935
Perrero TO 12 659 1594
Villar Pellice TO 13 1076 2670
Sauze di Cesana TO 15 244 2914
Sestriere TO 15 929 3843
Pramollo TO 17 258 4101
Rorà TO 17 257 4358
Angrogna TO 17 889 5247
Pomaretto TO 17 1009 6256
Torre Pellice TO 18 4551 10807
Pragelato TO 18 776 11583
Perosa Argentina TO 18 3285 14868
Roure TO 18 848 15716
San Germano Chisone TO 19 1854 17570
Inverso Pinasca TO 19 730 18300
Luserna San Giovanni TO 20 7395 25695
Fenestrelle TO 20 544 26239
Pinasca TO 20 3051 29290
Cesana Torinese TO 20 967 30257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km W of Moncalieri (57294 inhabitants)
58 Km W of Torino (890529 inhabitants)
68 Km NW of Cuneo (56081 inhabitants)
94 Km W of Asti (76202 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 2.2 2018-02-16
07:50:10		 44.8618 7.0083 11 2019-04-24
14:49:23		 Bollettino Sismico Italiano INGV 55275241
Reviewed
Rev100 		ML 2.3 2018-02-16
07:50:10		 44.8657 7.0158 12 2018-02-16
07:59:03		 Sala Sismica INGV-Roma 53933171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-16 07:50:10 ± 0.12
Latitude 44.8618 ± 0.0063
Longitude 7.0083 ± 0.0102
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 55275241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 670
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.14124
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 55275241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-04-09 08:31:54

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 53933171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-16 07:59:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.PANI.EHZ. 2018-02-16T07:52:00.63 3.0 undecidable manual Sg 20.51 0
IV.LEOD.HNZ. 2018-02-16T07:50:57.61 3.0 undecidable manual Pg 10.29 0
RD.PGF.BHZ. 2018-02-16T07:50:55.20 3.0 negative manual Pn 1.94 0
GU.GBOS.HHZ. 2018-02-16T07:50:37.40 0.3 undecidable manual S 136 95.1381 90 -0.88 51
GU.TRAV.HHZ. 2018-02-16T07:50:37.04 0.3 undecidable manual S 38 92.4408 90 -0.5 59
GU.CIRO.HHZ. 2018-02-16T07:50:37.21 0.3 undecidable manual S 28 93.0402 90 -0.48 60
CH.MMK.HHZ. 2018-02-16T07:50:35.85 3.0 negative manual P 1.05 0
GU.PCP.HHZ. 2018-02-16T07:50:31.86 0.3 undecidable manual P 106 126.2736 90 0.57 56
GU.CANO.HHZ. 2018-02-16T07:50:31.06 0.3 undecidable manual P 126 121.2897 90 0.54 57
IV.IMI.HHZ. 2018-02-16T07:50:31.55 0.3 undecidable manual P 146 126.6732 90 0.17 61
GU.STV.HHZ. 2018-02-16T07:50:31.80 0.3 undecidable manual S 160 72.8715 90 -0.52 62
GU.RORO.HHZ. 2018-02-16T07:50:30.19 0.3 undecidable manual P 134 117.993 90 0.18 62
GU.LSD.HHZ. 2018-02-16T07:50:30.11 0.3 undecidable manual S 8 66.9774 90 -0.67 60
IV.QLNO.HHZ. 2018-02-16T07:50:30.73 0.3 undecidable manual P 119 121.2897 90 0.21 62
IV.MRGE.HHZ. 2018-02-16T07:50:28.00 0.1 undecidable manual P 2 100.8213 90 0.62 75
GU.CIRO.HHZ. 2018-02-16T07:50:26.80 0.3 undecidable manual P 28 93.0402 90 0.63 58
GU.GBOS.HHZ. 2018-02-16T07:50:26.67 0.3 undecidable manual P 136 95.1381 90 0.16 65
GU.TRAV.HHZ. 2018-02-16T07:50:26.41 0.3 undecidable manual P 38 92.4408 90 0.33 63
RD.ORIF.BHZ. 2018-02-16T07:50:26.72 3.0 positive manual P 0.16 0
IV.MONC.HHZ. 2018-02-16T07:50:24.01 0.3 undecidable manual P 72 75.8685 90 0.47 64
GU.PZZ.HHZ. 2018-02-16T07:50:23.00 0.1 undecidable manual S 168 40.3263 90 -0.63 85
GU.STV.HHZ. 2018-02-16T07:50:23.60 0.1 undecidable manual P 160 72.8715 90 0.53 83
GU.LSD.HHZ. 2018-02-16T07:50:22.35 0.1 undecidable manual P 8 66.9774 90 0.18 91
GU.RSP.HHZ. 2018-02-16T07:50:22.20 0.6 undecidable manual S 32 37.629 90 -0.72 41
MN.BNI.HHZ. 2018-02-16T07:50:21.13 0.1 undecidable manual S 309 33.4443 90 -0.67 89
GU.PZZ.HHZ. 2018-02-16T07:50:18.23 0.1 undecidable manual P 168 40.3263 90 0.18 96
GU.RSP.HHZ. 2018-02-16T07:50:17.90 0.1 positive manual P 32 37.629 90 0.26 95
GU.RRL.HHZ. 2018-02-16T07:50:17.40 0.1 undecidable manual S 291 18.2706 90 -0.36 99
MN.BNI.HHZ. 2018-02-16T07:50:17.30 0.1 undecidable manual P 309 33.4443 90 0.31 93
GU.BHB.HHZ. 2018-02-16T07:50:17.80 0.1 undecidable manual S 98 20.2686 90 -0.49 90
GU.BHB.HHZ. 2018-02-16T07:50:15.15 0.1 positive manual P 98 20.2686 90 0.19 100
GU.RRL.HHZ. 2018-02-16T07:50:15.03 0.1 negative manual P 291 18.2706 90 0.37 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RRL.HHE. ML:2.5 0.002267401 0.1984 AML other m 2018-02-16T07:50:17.81
GU.RRL.HHN. ML:2.4 0.0020218148 0.096 AML other m 2018-02-16T07:50:17.66
GU.BHB.HHE. ML:2.3 0.0014246328000000002 0.1024 AML other m 2018-02-16T07:50:15.22
GU.BHB.HHN. ML:2.5 0.00231198 0.1408 AML other m 2018-02-16T07:50:18.19
MN.BNI.HHE. ML:2.2 0.0006340719 0.096 AML other m 2018-02-16T07:50:21.25
MN.BNI.HHN. ML:2.0 0.0004281329 0.16 AML other m 2018-02-16T07:50:21.39
MN.BNI.HNN. ML:1.9 0.0003491861 0.1408 AML other m 2018-02-16T07:50:21.40
MN.BNI.HNE. ML:2.1 0.000502038 0.096 AML other m 2018-02-16T07:50:21.25
GU.RSP.HNN. ML:2.4 0.0008588743 0.16 AML other m 2018-02-16T07:50:22.53
GU.RSP.HNE. ML:2.3 0.0007198746499999999 0.1024 AML other m 2018-02-16T07:50:22.91
GU.RSP.HHE. ML:2.3 0.0008160779 0.0832 AML other m 2018-02-16T07:50:22.91
GU.RSP.HHN. ML:2.4 0.0009283949 0.16 AML other m 2018-02-16T07:50:22.53
GU.PZZ.HHE. ML:3.2 0.0052490015 0.1408 AML other m 2018-02-16T07:50:24.36
GU.PZZ.HHN. ML:2.8 0.0023272614999999995 0.1216 AML other m 2018-02-16T07:50:24.28
GU.LSD.HHE. ML:2.4 0.00042682715000000006 0.1408 AML other m 2018-02-16T07:50:31.20
GU.LSD.HHN. ML:2.3 0.000373347 0.1856 AML other m 2018-02-16T07:50:32.47
GU.STV.HHE. ML:2.1 0.00019066635 0.3008 AML other m 2018-02-16T07:50:33.27
GU.STV.HHN. ML:1.9 0.00013694395000000002 0.1216 AML other m 2018-02-16T07:50:33.37
IV.MONC.HHN. ML:2.4 0.0003433924 0.2432 AML other m 2018-02-16T07:50:39.01
IV.MONC.HHE. ML:2.4 0.00035461540000000005 0.2816 AML other m 2018-02-16T07:50:38.72
GU.TRAV.HHE. ML:2.2 0.00018703545 0.256 AML other m 2018-02-16T07:50:39.32
GU.TRAV.HHN. ML:2.1 0.000133371175 0.1984 AML other m 2018-02-16T07:50:41.63
GU.GBOS.HHE. ML:2.1 0.00013557897999999998 0.1216 AML other m 2018-02-16T07:50:38.50
GU.GBOS.HHN. ML:2.1 0.00014718805000000002 0.1984 AML other m 2018-02-16T07:50:38.07
RD.ORIF.BHE. ML:1.9 0.00009680558 0.32 AML other m 2018-02-16T07:50:38.57
RD.ORIF.BHN. ML:2.1 0.0001587056 0.2816 AML other m 2018-02-16T07:50:37.45
GU.CIRO.HHE. ML:1.9 0.000096808895 0.2176 AML other m 2018-02-16T07:50:38.74
GU.CIRO.HHN. ML:2.0 0.00009892843000000002 0.16 AML other m 2018-02-16T07:50:38.56
IV.MRGE.HHN. ML:2.0 0.00010142207 0.2432 AML other m 2018-02-16T07:50:43.43
IV.MRGE.HHE. ML:2.0 0.000109366165 0.2816 AML other m 2018-02-16T07:50:40.50
GU.RORO.HHN. ML:2.4 0.0001852627 0.16 AML other m 2018-02-16T07:50:45.41
GU.RORO.HHE. ML:2.3 0.00015116670000000002 0.1984 AML other m 2018-02-16T07:50:44.92
IV.QLNO.HHN. ML:2.1 0.00009497191499999999 0.1792 AML other m 2018-02-16T07:50:47.16
IV.QLNO.HHE. ML:2.2 0.00011064347 0.2176 AML other m 2018-02-16T07:50:47.08
GU.CANO.HHN. ML:2.4 0.00019849845 0.2816 AML other m 2018-02-16T07:50:47.91
GU.CANO.HHE. ML:2.4 0.0002002854 0.3392 AML other m 2018-02-16T07:50:50.22
IV.IMI.HHN. ML:2.4 0.00017558015 0.2432 AML other m 2018-02-16T07:50:48.35
IV.IMI.HHE. ML:2.2 0.00010905414000000001 0.1792 AML other m 2018-02-16T07:50:49.06
GU.PCP.HHN. ML:2.0 0.000064304645 0.1664 AML other m 2018-02-16T07:50:48.32
GU.PCP.HHE. ML:2.0 0.000068655515 0.1984 AML other m 2018-02-16T07:50:49.73
CH.MMK.HHE. ML:1.7 0.000023414784 0.3008 AML other m 2018-02-16T07:51:04.30
CH.MMK.HHN. ML:1.8 0.00003611186 0.4992 AML other m 2018-02-16T07:51:05.01
RD.PGF.BHE. ML:2.3 0.000027124195000000003 3.1232 AML other m 2018-02-16T07:51:58.49
RD.PGF.BHN. ML:2.2 0.000019605067 1.44 AML other m 2018-02-16T07:51:46.44
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