INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.6 on date 28-12-2018 and time 07:01:51 (Italy) in region 4 km NW Valloriate (CN)

A magnitude ML 0.6 earthquake occured in region: 4 km NW Valloriate (CN), on

  • 28-12-2018 06:01:51 (UTC)
  • 28-12-2018 07:01:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.36, 7.34 at 9 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
Valloriate CN 4 109 109
Rittana CN 5 109 218
Monterosso Grana CN 5 505 723
Valgrana CN 6 786 1509
Gaiola CN 6 582 2091
Moiola CN 6 234 2325
Demonte CN 6 2003 4328
Pradleves CN 8 250 4578
Bernezzo CN 8 4104 8682
Roccasparvera CN 8 741 9423
Montemale di Cuneo CN 9 241 9664
Caraglio CN 9 6836 16500
Cervasca CN 10 5013 21513
Vignolo CN 10 2600 24113
Valdieri CN 11 935 25048
Aisone CN 11 248 25296
Castelmagno CN 11 66 25362
Dronero CN 12 7035 32397
Borgo San Dalmazzo CN 12 12468 44865
Roccabruna CN 13 1585 46450
Roccavione CN 13 2761 49211
Cartignano CN 13 190 49401
Villar San Costanzo CN 14 1547 50948
Roaschia CN 14 107 51055
Entracque CN 15 774 51829
Vinadio CN 15 644 52473
San Damiano Macra CN 15 430 52903
Robilante CN 16 2306 55209
Cuneo CN 17 56081 111290
Boves CN 17 9835 121125
Celle di Macra CN 18 100 121225
Busca CN 20 10181 131406
Macra CN 20 59 131465
Valmala CN 20 52 131517

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Cuneo (56081 inhabitants)
70 Km NW of Sanremo (54807 inhabitants)
76 Km SW of Moncalieri (57294 inhabitants)
83 Km SW of Torino (890529 inhabitants)
91 Km SW of Asti (76202 inhabitants)
91 Km W of Savona (61345 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 0.6 2018-12-28
06:01:51
44.37 7.34 9 2018-12-28
06:12:08
Sala Sismica INGV-Roma 64296811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-28 06:01:51 ± 0.13
Latitude 44.37 ± 0.02
Longitude 7.34 ± 0.04
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 64296811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3479
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 3480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 64296811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-28 06:12:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IMOL.HNZ. 2018-12-28T06:02:48.54 3.0 undecidable manual Sn 0.25 0
IV.SNTG.HHZ. 2018-12-28T06:02:37.78 3.0 negative manual Pn 7.23 0
IV.MNTP.HNZ. 2018-12-28T06:02:35.79 3.0 positive manual Pn -0.09 0
IV.IMOL.HNZ. 2018-12-28T06:02:27.21 3.0 positive manual Pg 11.37 0
IV.BRIS.HHZ. 2018-12-28T06:02:22.95 3.0 undecidable manual Pg 6.64 0
GU.CANO.HHZ. 2018-12-28T06:02:10.14 3.0 undecidable manual Sn 0.37 0
IV.QLNO.HHZ. 2018-12-28T06:02:08.70 3.0 undecidable manual Sn -0.37 0
GU.GSCL.HHZ. 2018-12-28T06:02:05.33 3.0 positive manual Pn -0.58 0
GU.GBOS.HHZ. 2018-12-28T06:02:05.26 0.6 undecidable manual S 109 0.3768 50 -0.34 61
GU.PZZ.HHZ. 2018-12-28T06:02:00.25 0.3 undecidable manual S 311 0.2149 111 -0.24 96
GU.GBOS.HHZ. 2018-12-28T06:01:59.93 0.6 undecidable manual P 109 0.3768 50 0.25 62
GU.ENR.HHZ. 2018-12-28T06:01:58.09 0.3 undecidable manual S 158 0.1493 120 -0.12 100
GU.STV.HHZ. 2018-12-28T06:01:57.10 0.3 undecidable manual S 185 0.1196 125 -0.16 100
IV.EUCT.HNZ. 2018-12-28T06:01:57.34 3.0 positive manual P -0.01 0
GU.PZZ.HHZ. 2018-12-28T06:01:56.92 0.3 undecidable manual P 311 0.2149 111 0.19 97
GU.STV.HHZ. 2018-12-28T06:01:55.05 0.3 undecidable manual P 185 0.1196 125 0.19 99
GU.ENR.HHZ. 2018-12-28T06:01:55.61 0.3 undecidable manual P 158 0.1493 120 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHN. ML:0.6 4.390424E-5 0.16 AML other m 2018-12-28T06:01:57.20
GU.STV.HHE. ML:0.5 3.569882E-5 0.0992 AML other m 2018-12-28T06:01:57.19
GU.ENR.HHE. ML:0.5 3.151332E-5 0.08 AML other m 2018-12-28T06:01:58.40
GU.ENR.HHN. ML:0.4 2.3831555E-5 0.0608 AML other m 2018-12-28T06:01:58.89
GU.PZZ.HHN. ML:0.7 3.0260325E-5 0.0992 AML other m 2018-12-28T06:02:00.79
GU.PZZ.HHE. ML:0.6 2.3344755E-5 0.0992 AML other m 2018-12-28T06:02:00.98
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download