Earthquake with magnitude of ML 1.0 on date 24-07-2021 and time 15:02:10 (Italy) in region 1 km E Pradleves (CN)

A magnitude ML 1.0 earthquake occured in region: 1 km E Pradleves (CN), on

  • 24-07-2021 13:02:10 (UTC)
  • 24-07-2021 15:02:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.421, 7.289 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
Pradleves CN 1 250 250
Monterosso Grana CN 3 505 755
Castelmagno CN 6 66 821
Cartignano CN 6 190 1011
Montemale di Cuneo CN 7 241 1252
Valgrana CN 7 786 2038
Roccabruna CN 8 1585 3623
Dronero CN 8 7035 10658
San Damiano Macra CN 8 430 11088
Villar San Costanzo CN 10 1547 12635
Caraglio CN 11 6836 19471
Celle di Macra CN 11 100 19571
Valloriate CN 11 109 19680
Demonte CN 12 2003 21683
Rittana CN 12 109 21792
Bernezzo CN 12 4104 25896
Macra CN 12 59 25955
Aisone CN 13 248 26203
Gaiola CN 13 582 26785
Moiola CN 14 234 27019
Valmala CN 15 52 27071
Cervasca CN 15 5013 32084
Roccasparvera CN 15 741 32825
Vinadio CN 16 644 33469
Marmora CN 16 68 33537
Vignolo CN 16 2600 36137
Melle CN 16 292 36429
Stroppo CN 16 103 36532
Frassino CN 17 265 36797
Canosio CN 17 80 36877
Brossasco CN 18 1084 37961
Rossana CN 18 908 38869
Busca CN 18 10181 49050
Venasca CN 18 1437 50487
Valdieri CN 18 935 51422
Borgo San Dalmazzo CN 19 12468 63890
Sambuco CN 19 92 63982
Roccavione CN 19 2761 66743
Sampeyre CN 19 1022 67765
Prazzo CN 20 170 67935

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
72 Km SW of Moncalieri (57294 inhabitants)
78 Km NW of Sanremo (54807 inhabitants)
79 Km SW of Torino (890529 inhabitants)
90 Km SW of Asti (76202 inhabitants)
96 Km W of Savona (61345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.0 2021-07-24
13:02:10
44.4207 7.2893 17 2021-07-24
13:08:02
Sala Sismica INGV-Roma 93149711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-24 13:02:10 ± 0.42
Latitude 44.4207 ± 0.0162
Longitude 7.2893 ± 0.0353
Depth (km) 17 ± 8 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93149711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2484
Semi-minor axis of confidence ellipse (meter) 1865
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 2480
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 25
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.61334
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 93149711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-24 13:08:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MARS.HNZ. 2021-07-24T13:04:03.24 3.0 undecidable manual Pn 5.84 0
IV.MTGR.HHZ. 2021-07-24T13:03:56.31 3.0 negative manual Pn -0.64 0
CR.ZAG.BHZ. 2021-07-24T13:03:47.20 3.0 undecidable manual Pn 4.2 0
IV.BRSN.EHZ. 2021-07-24T13:03:43.54 3.0 undecidable manual Sn -2.85 0
IV.TST01.HHZ. 2021-07-24T13:03:32.17 3.0 undecidable manual Pn -2 0
IV.VOBA.EHZ. 2021-07-24T13:03:28.93 3.0 undecidable manual Sn 1.8 0
IV.POFI.HHZ. 2021-07-24T13:03:27.22 3.0 undecidable manual Pn -0.95 0
OX.MPRI.HHZ. 2021-07-24T13:03:22.61 3.0 positive manual Pn 5.6 0
IV.ARVD.HHZ. 2021-07-24T13:03:13.34 3.0 negative manual Pn 0.94 0
IV.FOSV.EHZ. 2021-07-24T13:03:10.93 3.0 undecidable manual Pn -0.3 0
IV.ZCCA.HHZ. 2021-07-24T13:03:03.74 3.0 positive manual Pg 11.84 0
IV.CPGN.EHZ. 2021-07-24T13:03:03.36 3.0 undecidable manual Pn -2.25 0
IV.RIBO.EHZ.01 2021-07-24T13:02:56.00 3.0 undecidable manual Pn -0.31 0
GU.GORR.HHZ. 2021-07-24T13:02:55.96 3.0 undecidable manual Sn -2.49 0
IV.SARZ.HHZ. 2021-07-24T13:02:35.00 3.0 positive manual Pg 1.57 0
GU.RRL.HHZ. 2021-07-24T13:02:31.46 0.6 undecidable manual S 325 0.6133 96 0.47 46
GU.BHB.HHZ. 2021-07-24T13:02:24.90 0.3 undecidable manual S 357 0.4146 100 -0.28 73
GU.RRL.HHZ. 2021-07-24T13:02:21.61 0.1 undecidable manual P 325 0.6133 96 -0.63 84
GU.BHB.HHZ. 2021-07-24T13:02:19.46 1.0 undecidable manual P 357 0.4146 100 0.58 23
GU.ENR.HHZ. 2021-07-24T13:02:19.29 0.3 undecidable manual S 154 0.2122 115 -0.11 79
GU.STV.HHZ. 2021-07-24T13:02:18.12 0.1 undecidable manual S 171 0.1772 121 -0.37 100
GU.PZZ.HHZ. 2021-07-24T13:02:17.93 0.3 undecidable manual S 305 0.1511 126 0.1 82
GU.ENR.HHZ. 2021-07-24T13:02:16.32 0.6 undecidable manual P 154 0.2122 115 0.77 45
GU.STV.HHZ. 2021-07-24T13:02:15.60 0.6 undecidable manual P 171 0.1772 121 0.58 49
GU.PZZ.HHZ. 2021-07-24T13:02:15.37 1.0 undecidable manual P 305 0.1511 126 0.73 23
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1 6.475E-5 0.12 AML other m 2021-07-24T13:02:18.08
GU.STV.HHE. ML:1 6.402687E-5 0.1216 AML other m 2021-07-24T13:02:18.20
GU.PZZ.HHE. ML:0.9 6.105E-5 0.16 AML other m 2021-07-24T13:02:18.15
GU.STV.HHN. ML:1.1 7.275E-5 0.08 AML other m 2021-07-24T13:02:18.20
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download