Earthquake with magnitude of ML 0.9 on date 21-05-2020 and time 22:34:09 (Italy) in region 4 km NE Cartignano (CN)

A magnitude ML 0.9 earthquake occured in region: 4 km NE Cartignano (CN), on

  • 21-05-2020 20:34:09 (UTC)
  • 21-05-2020 22:34:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.52, 7.31 at 11 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
Cartignano CN 4 190 190
Valmala CN 5 52 242
Roccabruna CN 5 1585 1827
San Damiano Macra CN 5 430 2257
Melle CN 5 292 2549
Villar San Costanzo CN 7 1547 4096
Frassino CN 7 265 4361
Dronero CN 7 7035 11396
Brossasco CN 8 1084 12480
Venasca CN 9 1437 13917
Isasca CN 10 76 13993
Montemale di Cuneo CN 10 241 14234
Macra CN 10 59 14293
Rossana CN 10 908 15201
Celle di Macra CN 11 100 15301
Pradleves CN 11 250 15551
Monterosso Grana CN 12 505 16056
Sampeyre CN 12 1022 17078
Brondello CN 12 290 17368
Valgrana CN 13 786 18154
Gambasca CN 13 371 18525
Busca CN 13 10181 28706
Martiniana Po CN 13 734 29440
Piasco CN 13 2774 32214
Castelmagno CN 14 66 32280
Caraglio CN 14 6836 39116
Stroppo CN 14 103 39219
Sanfront CN 15 2395 41614
Pagno CN 15 585 42199
Costigliole Saluzzo CN 15 3375 45574
Rifreddo CN 16 1078 46652
Castellar CN 16 295 46947
Verzuolo CN 17 6459 53406
Revello CN 17 4262 57668
Bernezzo CN 17 4104 61772
Elva CN 18 97 61869
Marmora CN 18 68 61937
Manta CN 18 3787 65724
Villafalletto CN 19 2925 68649
Tarantasca CN 19 2122 70771
Canosio CN 19 80 70851
Paesana CN 19 2784 73635
Envie CN 19 2074 75709
Cervasca CN 19 5013 80722
Rittana CN 20 109 80831

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Cuneo (56081 inhabitants)
62 Km SW of Moncalieri (57294 inhabitants)
69 Km SW of Torino (890529 inhabitants)
83 Km SW of Asti (76202 inhabitants)
86 Km NW of Sanremo (54807 inhabitants)
96 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
Reviewed
Rev100
ML 0.9 2020-05-21
20:34:09
44.52 7.31 11 2020-05-21
20:40:34
Sala Sismica INGV-Roma 79421211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-21 20:34:09 ± 0.16
Latitude 44.52 ± 0.00
Longitude 7.31 ± 0.02
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79421211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1280
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.1376
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:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 79421211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-21 20:40:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RRL.HHE. 2020-05-21T20:34:28.07 0.3 undecidable manual S 318 0.5477 90 -0.47 65
GU.BURY.HHE. 2020-05-21T20:34:24.14 0.3 undecidable manual P 166 0.7536 90 -0.04 68
GU.BHB.HHZ. 2020-05-21T20:34:21.43 0.1 undecidable manual S 354 0.322 90 -0.42 92
GU.RRL.HHE. 2020-05-21T20:34:21.04 0.3 undecidable manual P 318 0.5477 90 0.39 66
GU.ENR.HHZ. 2020-05-21T20:34:20.88 0.1 undecidable manual S 165 0.2995 90 -0.3 94
GU.STV.HHZ. 2020-05-21T20:34:19.94 0.1 undecidable manual S 177 0.2698 90 -0.38 93
GU.STV.HHZ. 2020-05-21T20:34:16.23 0.1 negative manual P 177 0.2698 90 0.33 95
GU.ENR.HHZ. 2020-05-21T20:34:16.76 0.1 undecidable manual P 165 0.2995 90 0.36 94
GU.PZZ.HHZ. 2020-05-21T20:34:16.21 0.1 undecidable manual S 267 0.1376 90 -0.19 100
GU.BHB.HHZ. 2020-05-21T20:34:16.96 0.1 undecidable manual P 354 0.322 90 0.17 97
GU.PZZ.HHZ. 2020-05-21T20:34:13.98 0.1 positive manual P 267 0.1376 90 0.34 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:1.1 0.000122 0.14 AML other m 2020-05-21T20:34:16.31
GU.PZZ.HHN. ML:1.2 0.000128 0.22 AML other m 2020-05-21T20:34:16.61
GU.ENR.HHN. ML:0.9 3.695E-5 1.28 AML other m 2020-05-21T20:34:21.76
GU.STV.HHE. ML:0.7 2.2802735E-5 0.1152 AML other m 2020-05-21T20:34:20.16
GU.STV.HHN. ML:0.3 1.19197575E-5 0.0896 AML other m 2020-05-21T20:34:20.31
GU.ENR.HHE. ML:0.9 3.2534845E-5 0.0512 AML other m 2020-05-21T20:34:21.57
GU.BHB.HHE. ML:0.1 2.9867675E-6 0.0768 AML other m 2020-05-21T20:34:21.45
GU.BHB.HHN. ML:0.1 3.2319695E-6 0.3584 AML other m 2020-05-21T20:34:21.45
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