INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 20-02-2019 and time 06:13:01 (Italy) in region 1 km SE Castelmagno (CN)

A magnitude ML 1.1 earthquake occured in region: 1 km SE Castelmagno (CN), on

  • 20-02-2019 05:13:01 (UTC)
  • 20-02-2019 06:13:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4, 7.22 at 5 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
Castelmagno CN 1 66 66
Pradleves CN 5 250 316
Monterosso Grana CN 8 505 821
Celle di Macra CN 9 100 921
San Damiano Macra CN 10 430 1351
Cartignano CN 10 190 1541
Aisone CN 10 248 1789
Macra CN 11 59 1848
Vinadio CN 11 644 2492
Marmora CN 12 68 2560
Demonte CN 12 2003 4563
Canosio CN 12 80 4643
Roccabruna CN 13 1585 6228
Valgrana CN 13 786 7014
Montemale di Cuneo CN 13 241 7255
Dronero CN 13 7035 14290
Sambuco CN 14 92 14382
Stroppo CN 14 103 14485
Valloriate CN 14 109 14594
Villar San Costanzo CN 16 1547 16141
Rittana CN 16 109 16250
Prazzo CN 16 170 16420
Pietraporzio CN 16 77 16497
Moiola CN 16 234 16731
Caraglio CN 17 6836 23567
Gaiola CN 17 582 24149
Bernezzo CN 17 4104 28253
Elva CN 18 97 28350
Valmala CN 19 52 28402
Roccasparvera CN 19 741 29143
Frassino CN 19 265 29408
Melle CN 19 292 29700
Sampeyre CN 20 1022 30722
Acceglio CN 20 162 30884
Cervasca CN 20 5013 35897
Valdieri CN 20 935 36832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
76 Km SW of Moncalieri (57294 inhabitants)
79 Km NW of Sanremo (54807 inhabitants)
83 Km SW of Torino (890529 inhabitants)
95 Km SW of Asti (76202 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 1.1 2019-02-20
05:13:01
44.41 7.22 5 2019-02-20
06:44:47
Sala Sismica INGV-Roma 65723031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-20 05:13:01 ± 0.11
Latitude 44.41 ± 0.01
Longitude 7.22 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65723031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1150
Semi-minor axis of confidence ellipse (meter) 390
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.12591
Epicentral distance of station farthest from the epicenter (degree) 0.75363
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 65723031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-20 06:44:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2019-02-20T05:13:27.26 0.3 undecidable manual S 105 0.7536 50 0.07 65
GU.GBOS.HHZ. 2019-02-20T05:13:18.71 0.1 undecidable manual S 110 0.4721 50 -0.14 91
GU.BHB.HHZ. 2019-02-20T05:13:17.05 0.3 undecidable manual S 4 0.4308 50 -0.58 62
GU.CANO.HHZ. 2019-02-20T05:13:16.53 0.1 undecidable manual P 105 0.7536 50 0.38 82
GU.GBOS.HHZ. 2019-02-20T05:13:11.84 0.1 undecidable manual P 110 0.4721 50 0.51 84
GU.BHB.HHZ. 2019-02-20T05:13:10.55 0.1 undecidable manual P 4 0.4308 50 -0.08 93
GU.ENR.HHZ. 2019-02-20T05:13:09.85 0.1 undecidable manual S 141 0.2284 101 -0.19 95
GU.STV.HHZ. 2019-02-20T05:13:07.83 0.1 undecidable manual S 155 0.1763 104 -0.25 94
GU.ENR.HHZ. 2019-02-20T05:13:06.34 0.1 undecidable manual P 141 0.2284 101 0.1 96
GU.PZZ.HHZ. 2019-02-20T05:13:06.20 0.1 undecidable manual S 324 0.1259 110 -0.01 100
GU.STV.HHZ. 2019-02-20T05:13:05.06 0.1 undecidable manual P 155 0.1763 104 -0.05 98
GU.PZZ.HHZ. 2019-02-20T05:13:04.19 0.1 undecidable manual P 324 0.1259 110 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.2 0.0001965 0.1 AML other m 2019-02-20T05:13:06.46
GU.PZZ.HHE. ML:1.6 0.000435 0.24 AML other m 2019-02-20T05:13:06.51
GU.STV.HHN. ML:0.9 6.37E-5 1.68 AML other m 2019-02-20T05:13:08.93
GU.STV.HHE. ML:0.8 5.395E-5 0.24 AML other m 2019-02-20T05:13:08.31
GU.ENR.HHN. ML:1.3 0.000127 0.74 AML other m 2019-02-20T05:13:10.50
GU.ENR.HHE. ML:1.2 8.82E-5 1.44 AML other m 2019-02-20T05:13:10.15
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