Earthquake with magnitude of ML 1.5 on date 19-10-2021 and time 16:26:07 (UTC) in region 3 km E Elva (CN)

A magnitude ML 1.5 earthquake occured in region: 3 km E Elva (CN), on

  • 19-10-2021 16:26:07 (UTC)
  • 19-10-2021 18:26:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.543, 7.124 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Elva CN 3 97 97
Stroppo CN 4 103 200
Macra CN 6 59 259
Sampeyre CN 7 1022 1281
Casteldelfino CN 7 157 1438
Celle di Macra CN 8 100 1538
Prazzo CN 9 170 1708
Bellino CN 9 109 1817
Marmora CN 10 68 1885
Canosio CN 10 80 1965
Pontechianale CN 12 179 2144
San Damiano Macra CN 12 430 2574
Frassino CN 13 265 2839
Acceglio CN 13 162 3001
Cartignano CN 15 190 3191
Melle CN 16 292 3483
Oncino CN 16 76 3559
Castelmagno CN 16 66 3625
Ostana CN 18 83 3708
Crissolo CN 18 168 3876
Valmala CN 18 52 3928
Pradleves CN 19 250 4178
Roccabruna CN 19 1585 5763
Brossasco CN 19 1084 6847
Sanfront CN 19 2395 9242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Cuneo (56081 inhabitants)
68 Km SW of Moncalieri (57294 inhabitants)
74 Km SW of Torino (890529 inhabitants)
94 Km W of Asti (76202 inhabitants)
96 Km NW of Sanremo (54807 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.5 2021-10-19
16:26:07
44.5427 7.1243 10 2021-10-19
16:31:49
Sala Sismica INGV-Roma 96766141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 16:26:07 ± 0.13
Latitude 44.5427 ± 0.0072
Longitude 7.1243 ± 0.0189
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96766141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1598
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 1600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.91641
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 96766141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 16:31:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-10-19T16:26:35.50 0.6 undecidable manual S 112 0.8624 50 -0.16 44
GU.IMI.HHZ. 2021-10-19T16:26:35.01 0.6 undecidable manual S 139 0.8382 50 0.08 45
GU.RORO.HHZ. 2021-10-19T16:26:33.65 0.6 undecidable manual S 122 0.7995 50 -0.14 45
GU.MGRO.HHZ. 2021-10-19T16:26:30.76 0.6 undecidable manual S 135 0.6997 50 -0.06 46
GU.RSP.HHZ. 2021-10-19T16:26:28.05 0.6 undecidable manual S 9 0.6133 50 -0.22 46
FR.SAOF.HHZ.00 2021-10-19T16:26:28.79 0.6 undecidable manual S 151 0.6358 50 -0.14 46
GU.LSD.HHZ. 2021-10-19T16:26:24.94 0.1 undecidable manual P 0 0.9164 50 0.31 84
GU.CANO.HHZ. 2021-10-19T16:26:24.08 0.6 negative manual P 112 0.8624 50 0.36 42
IV.QLNO.HHZ. 2021-10-19T16:26:24.75 0.1 undecidable manual P 104 0.8984 50 0.42 83
GU.IMI.HHZ. 2021-10-19T16:26:23.68 0.1 undecidable manual P 139 0.8382 50 0.38 84
GU.RRL.HHZ. 2021-10-19T16:26:23.21 0.6 undecidable manual S 328 0.4461 50 -0.12 48
GU.RORO.HHZ. 2021-10-19T16:26:22.60 0.1 undecidable manual P 122 0.7995 50 -0.03 91
GU.MGRO.HHZ. 2021-10-19T16:26:21.23 0.1 undecidable manual P 135 0.6997 50 0.31 88
FR.SAOF.HHZ.00 2021-10-19T16:26:20.39 0.1 undecidable manual P 151 0.6358 50 0.56 84
GU.ENR.HHZ. 2021-10-19T16:26:20.80 0.6 undecidable manual S 146 0.3768 50 -0.47 46
GU.STV.HHZ. 2021-10-19T16:26:19.12 0.3 undecidable manual S 154 0.331 50 -0.78 61
GU.RSP.HHZ. 2021-10-19T16:26:19.58 1.0 negative manual P 9 0.6133 50 0.13 23
GU.BHB.HHZ. 2021-10-19T16:26:18.22 0.6 undecidable manual S 19 0.3085 50 -1.03 37
GU.RRL.HHZ. 2021-10-19T16:26:16.92 1.0 undecidable manual P 328 0.4461 50 0.33 23
GU.ENR.HHZ. 2021-10-19T16:26:15.29 0.6 positive manual P 146 0.3768 50 -0.12 49
GU.BHB.HHZ. 2021-10-19T16:26:14.15 0.1 negative manual P 19 0.3085 50 -0.09 100
GU.STV.HHZ. 2021-10-19T16:26:14.51 0.6 undecidable manual P 154 0.331 50 -0.1 50
GU.PZZ.HHZ. 2021-10-19T16:26:10.71 0.3 undecidable manual S 190 0.0369 158 -0.43 74
GU.PZZ.HHZ. 2021-10-19T16:26:09.66 1.0 undecidable manual P 190 0.0369 158 0.1 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:2.2 0.003055 0.32 AML other m 2021-10-19T16:26:10.79
GU.PZZ.HHE. ML:2.2 0.002595 1.76 AML other m 2021-10-19T16:26:11.93
GU.BHB.HHN. ML:1.6 0.0001855 0.28 AML other m 2021-10-19T16:26:18.81
GU.BHB.HNN. ML:1.7 0.0001945 0.26 AML other m 2021-10-19T16:26:18.81
GU.BHB.HHE. ML:1.5 0.000129 1.5 AML other m 2021-10-19T16:26:19.07
GU.BHB.HNE. ML:1.6 0.0001585 1.48 AML other m 2021-10-19T16:26:19.08
GU.STV.HHE. ML:1.2 6.52E-5 0.1 AML other m 2021-10-19T16:26:19.23
GU.STV.HHN. ML:1.4 8.795E-5 0.1 AML other m 2021-10-19T16:26:19.46
GU.ENR.HHN. ML:1.5 9.745E-5 0.46 AML other m 2021-10-19T16:26:20.46
GU.ENR.HHE. ML:1.7 0.0001795 0.16 AML other m 2021-10-19T16:26:21.38
GU.RRL.HHN. ML:1.1 3.4E-5 0.6 AML other m 2021-10-19T16:26:24.19
GU.RRL.HHE. ML:1.3 5.09E-5 1.3 AML other m 2021-10-19T16:26:25.28
GU.RSP.HHE. ML:1.4 4.695E-5 1.38 AML other m 2021-10-19T16:26:28.02
GU.RSP.HHN. ML:1.4 4.105E-5 1.28 AML other m 2021-10-19T16:26:28.74
GU.MGRO.HHN. ML:1.4 3.8E-5 1.5 AML other m 2021-10-19T16:26:31.24
GU.MGRO.HHE. ML:1.5 4.37E-5 0.2 AML other m 2021-10-19T16:26:32.16
GU.IMI.HHE. ML:1.7 5.205E-5 1.12 AML other m 2021-10-19T16:26:36.98
GU.IMI.HHN. ML:1.8 7.375E-5 0.42 AML other m 2021-10-19T16:26:36.45
GU.LSD.HHN. ML:1.3 2.195E-5 0.58 AML other m 2021-10-19T16:26:38.81
GU.LSD.HHE. ML:1.6 3.35E-5 1.56 AML other m 2021-10-19T16:26:40.15
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