Earthquake with magnitude of ML 1.0 on date 27-03-2020 and time 07:41:26 (UTC) in region 2 km NE Castelmagno (CN)

A magnitude ML 1.0 earthquake occured in region: 2 km NE Castelmagno (CN), on

  • 27-03-2020 07:41:26 (UTC)
  • 27-03-2020 08:41:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.42, 7.23 at 17 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 2 66 66
Pradleves CN 4 250 316
Monterosso Grana CN 8 505 821
Cartignano CN 8 190 1011
San Damiano Macra CN 8 430 1441
Celle di Macra CN 8 100 1541
Macra CN 10 59 1600
Roccabruna CN 11 1585 3185
Montemale di Cuneo CN 12 241 3426
Marmora CN 12 68 3494
Dronero CN 12 7035 10529
Aisone CN 12 248 10777
Valgrana CN 12 786 11563
Canosio CN 13 80 11643
Stroppo CN 13 103 11746
Demonte CN 13 2003 13749
Vinadio CN 13 644 14393
Villar San Costanzo CN 14 1547 15940
Valloriate CN 15 109 16049
Sambuco CN 15 92 16141
Prazzo CN 16 170 16311
Rittana CN 16 109 16420
Caraglio CN 16 6836 23256
Valmala CN 17 52 23308
Bernezzo CN 17 4104 27412
Moiola CN 17 234 27646
Gaiola CN 17 582 28228
Frassino CN 17 265 28493
Melle CN 17 292 28785
Elva CN 17 97 28882
Pietraporzio CN 18 77 28959
Sampeyre CN 18 1022 29981
Roccasparvera CN 19 741 30722
Cervasca CN 19 5013 35735
Brossasco CN 20 1084 36819

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
74 Km SW of Moncalieri (57294 inhabitants)
80 Km NW of Sanremo (54807 inhabitants)
81 Km SW of Torino (890529 inhabitants)
94 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 1.0 2020-03-27
07:41:26
44.42 7.23 17 2020-03-27
07:46:27
Sala Sismica INGV-Roma 77612271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-27 07:41:26 ± 0.27
Latitude 44.42 ± 0.02
Longitude 7.23 ± 0.06
Depth (km) 17 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77612271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5030
Semi-minor axis of confidence ellipse (meter) 1020
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 5030
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41459
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 77612271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-27 07:46:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2020-03-27T07:41:42.83 3.0 undecidable manual S 0
GU.BHB.HHZ. 2020-03-27T07:41:40.88 0.3 undecidable manual S 3 0.4146 99 0.01 73
GU.GBOS.HHZ. 2020-03-27T07:41:36.67 3.0 undecidable manual P 0
GU.BHB.HHZ. 2020-03-27T07:41:35.34 1.0 positive manual P 3 0.4146 99 0.75 21
GU.ENR.HHZ. 2020-03-27T07:41:35.51 0.3 undecidable manual S 145 0.2365 110 -0.24 74
GU.STV.HHZ. 2020-03-27T07:41:33.98 0.3 undecidable manual S 159 0.188 118 -0.45 72
GU.ENR.HHZ. 2020-03-27T07:41:32.54 0.6 undecidable manual P 145 0.2365 110 0.9 39
GU.PZZ.HHZ. 2020-03-27T07:41:32.05 0.3 undecidable manual S 316 0.1187 134 -0.71 67
GU.STV.HHZ. 2020-03-27T07:41:31.45 1.0 undecidable manual P 159 0.188 118 0.57 23
GU.PZZ.HHZ. 2020-03-27T07:41:30.17 0.1 positive manual P 316 0.1187 134 0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.1 0.0001049 0.2 AML other m 2020-03-27T07:41:32.29
GU.PZZ.HHE. ML:0.9 6.38E-5 0.18 AML other m 2020-03-27T07:41:32.47
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