Earthquake with magnitude of ML 1.1 on date 26-03-2020 and time 13:30:11 (Italy) in region 4 km S Monterosso Grana (CN)

A magnitude ML 1.1 earthquake occured in region: 4 km S Monterosso Grana (CN), on

  • 26-03-2020 12:30:11 (UTC)
  • 26-03-2020 13:30:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.37, 7.32 at 7 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
Monterosso Grana CN 4 505 505
Valloriate CN 6 109 614
Pradleves CN 6 250 864
Demonte CN 7 2003 2867
Valgrana CN 7 786 3653
Rittana CN 7 109 3762
Moiola CN 8 234 3996
Gaiola CN 8 582 4578
Montemale di Cuneo CN 9 241 4819
Castelmagno CN 9 66 4885
Bernezzo CN 10 4104 8989
Aisone CN 10 248 9237
Caraglio CN 10 6836 16073
Roccasparvera CN 10 741 16814
Dronero CN 11 7035 23849
Roccabruna CN 12 1585 25434
Cartignano CN 12 190 25624
Cervasca CN 12 5013 30637
Vignolo CN 12 2600 33237
Valdieri CN 12 935 34172
Villar San Costanzo CN 13 1547 35719
Vinadio CN 14 644 36363
San Damiano Macra CN 14 430 36793
Borgo San Dalmazzo CN 14 12468 49261
Roccavione CN 15 2761 52022
Roaschia CN 16 107 52129
Entracque CN 16 774 52903
Celle di Macra CN 17 100 53003
Robilante CN 18 2306 55309
Macra CN 18 59 55368
Cuneo CN 19 56081 111449
Boves CN 19 9835 121284
Valmala CN 19 52 121336
Sambuco CN 20 92 121428

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Cuneo (56081 inhabitants)
72 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)
93 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 1.1 2020-03-26
12:30:11
44.37 7.32 7 2020-03-26
12:36:38
Sala Sismica INGV-Roma 77590301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-26 12:30:11 ± 0.22
Latitude 44.37 ± 0.03
Longitude 7.32 ± 0.06
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77590301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5361
Semi-minor axis of confidence ellipse (meter) 417
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) 5360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.1277
Epicentral distance of station farthest from the epicenter (degree) 0.46315
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77590301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-26 12:36:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2020-03-26T12:30:25.93 0.3 undecidable manual S 109 0.3948 50 -0.17 71
GU.GBOS.HHZ. 2020-03-26T12:30:20.22 0.3 undecidable manual P 109 0.3948 50 0.45 67
GU.BHB.HHZ. 2020-03-26T12:30:20.55 0.1 undecidable manual P 355 0.4632 50 -0.38 90
GU.PZZ.HHZ. 2020-03-26T12:30:18.90 0.3 undecidable manual S 313 0.197 109 -0.22 72
GU.ENR.HHZ. 2020-03-26T12:30:17.60 0.3 undecidable manual S 154 0.1637 112 -0.3 70
GU.STV.HHZ. 2020-03-26T12:30:16.16 0.3 undecidable manual S 178 0.1277 117 -0.5 72
GU.ENR.HHZ. 2020-03-26T12:30:15.25 0.1 undecidable manual P 154 0.1637 112 0.22 100
GU.PZZ.HHZ. 2020-03-26T12:30:15.93 0.1 undecidable manual P 313 0.197 109 0.19 98
GU.STV.HHZ. 2020-03-26T12:30:14.40 0.1 undecidable manual P 178 0.1277 117 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHN. ML:1.1 0.00013385 0.26 AML other m 2020-03-26T12:30:16.22
GU.STV.HHE. ML:1 0.00011075 0.12 AML other m 2020-03-26T12:30:16.23
GU.ENR.HHN. ML:1 9.195E-5 0.72 AML other m 2020-03-26T12:30:17.83
GU.ENR.HHE. ML:1.1 0.00011265 1.44 AML other m 2020-03-26T12:30:18.88
GU.PZZ.HHN. ML:1 7.895E-5 1.3 AML other m 2020-03-26T12:30:19.76
GU.PZZ.HHE. ML:1.1 9.055E-5 0.14 AML other m 2020-03-26T12:30:19.89
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