Earthquake with magnitude of ML 0.9 on date 04-11-2021 and time 12:43:40 (Italy) in region 3 km E Cervasca (CN)

A magnitude ML 0.9 earthquake occured in region: 3 km E Cervasca (CN), on

  • 04-11-2021 11:43:40 (UTC)
  • 04-11-2021 12:43:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.391, 7.509 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
Cervasca CN 3 5013 5013
Cuneo CN 3 56081 61094
Vignolo CN 5 2600 63694
Bernezzo CN 6 4104 67798
Borgo San Dalmazzo CN 7 12468 80266
Caraglio CN 7 6836 87102
Boves CN 8 9835 96937
Roccasparvera CN 8 741 97678
Roccavione CN 9 2761 100439
Rittana CN 10 109 100548
Gaiola CN 10 582 101130
Valgrana CN 10 786 101916
Robilante CN 11 2306 104222
Peveragno CN 11 5543 109765
Beinette CN 11 3423 113188
Tarantasca CN 12 2122 115310
Montemale di Cuneo CN 12 241 115551
Castelletto Stura CN 12 1351 116902
Valloriate CN 12 109 117011
Moiola CN 12 234 117245
Roaschia CN 14 107 117352
Busca CN 14 10181 127533
Margarita CN 14 1441 128974
Centallo CN 14 6954 135928
Dronero CN 14 7035 142963
Villar San Costanzo CN 15 1547 144510
Monterosso Grana CN 15 505 145015
Montanera CN 15 760 145775
Chiusa di Pesio CN 15 3676 149451
Valdieri CN 15 935 150386
Vernante CN 16 1178 151564
Pianfei CN 16 2202 153766
Roccabruna CN 16 1585 155351
Morozzo CN 17 2086 157437
Villafalletto CN 17 2925 160362
Rossana CN 18 908 161270
Pradleves CN 18 250 161520
Demonte CN 19 2003 163523
Entracque CN 19 774 164297
Rocca de' Baldi CN 19 1662 165959
Costigliole Saluzzo CN 20 3375 169334

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of Cuneo (56081 inhabitants)
67 Km NW of Sanremo (54807 inhabitants)
69 Km S of Moncalieri (57294 inhabitants)
77 Km S of Torino (890529 inhabitants)
78 Km W of Savona (61345 inhabitants)
79 Km SW of Asti (76202 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-11-04
11:43:40
44.3907 7.5093 7 2021-11-04
11:58:48
Sala Sismica INGV-Roma 97254481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-04 11:43:40 ± 0.17
Latitude 44.3907 ± 0.0108
Longitude 7.5093 ± 0.0113
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97254481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1031
Semi-minor axis of confidence ellipse (meter) 816
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.75453
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 97254481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-04 11:58:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-11-04T11:45:13.78 3.0 undecidable manual Sg 5.64 0
IV.ATFO.HHZ. 2021-11-04T11:45:11.93 3.0 undecidable manual Sg 2.34 0
IV.LAV9.HNZ. 2021-11-04T11:45:11.17 3.0 undecidable manual Sn -9.99 0
IT.FIE.HGZ. 2021-11-04T11:44:55.40 3.0 undecidable manual Sg 6.93 0
IV.FIR.HHZ. 2021-11-04T11:44:49.72 3.0 undecidable manual Sg 1.94 0
OX.MARN.HHZ. 2021-11-04T11:44:46.87 3.0 undecidable manual Sn -9.99 0
IV.BOZZ.HNZ. 2021-11-04T11:44:41.72 3.0 undecidable manual Sg -3.46 0
IV.EL6.EHZ. 2021-11-04T11:44:37.43 3.0 undecidable manual Pg 11 0
IV.MMUR.HNZ. 2021-11-04T11:44:36.51 3.0 undecidable manual Pg 11.16 0
IV.PP3.EHZ. 2021-11-04T11:44:34.83 3.0 undecidable manual Pg 3.56 0
GU.GRAM.HHZ. 2021-11-04T11:44:33.36 3.0 undecidable manual Sg 0.12 0
IV.RIBO.EHZ.01 2021-11-04T11:44:16.37 3.0 positive manual Pg 8.46 0
OX.MARN.HHZ. 2021-11-04T11:44:10.60 3.0 undecidable manual Pn -6.16 0
IV.AGLI.HHZ. 2021-11-04T11:44:07.74 3.0 undecidable manual Pn 1.41 0
CH.MUGIO.HHZ. 2021-11-04T11:43:57.32 3.0 undecidable manual Pn -8.74 0
GU.PCP.HHE. 2021-11-04T11:43:56.56 1.0 undecidable manual P 78 0.7545 50 0.75 20
GU.PZZ.HHZ. 2021-11-04T11:43:52.34 0.6 undecidable manual S 293 0.304 101 -0.51 47
GU.GBOS.HHE. 2021-11-04T11:43:51.44 0.3 undecidable manual S 122 0.2797 102 -0.49 72
GU.RORO.HHE. 2021-11-04T11:43:51.14 0.3 undecidable manual P 125 0.4865 50 -0.09 75
GU.BHB.HHZ. 2021-11-04T11:43:50.61 0.6 undecidable manual P 339 0.4775 50 -0.47 46
GU.MGRO.HHE. 2021-11-04T11:43:49.79 1.0 undecidable manual P 148 0.4083 50 -0.11 25
GU.PZZ.HHZ. 2021-11-04T11:43:48.11 0.3 undecidable manual P 293 0.304 101 0.3 74
GU.STV.HHZ. 2021-11-04T11:43:48.53 0.3 undecidable manual S 222 0.1961 107 -0.28 76
GU.ENR.HHZ. 2021-11-04T11:43:47.83 0.3 undecidable manual S 202 0.1736 109 -0.19 78
GU.GBOS.HHE. 2021-11-04T11:43:47.62 0.3 undecidable manual P 122 0.2797 102 0.34 74
GU.ENR.HHZ. 2021-11-04T11:43:45.41 0.3 undecidable manual P 202 0.1736 109 0.39 75
GU.STV.HHZ. 2021-11-04T11:43:45.84 0.1 undecidable manual P 222 0.1961 107 0.36 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:1.5 0.0002715 0.08 AML other m 2021-11-04T11:43:47.92
GU.ENR.HHN. ML:1.2 0.00012195 1.56 AML other m 2021-11-04T11:43:48.04
GU.STV.HHE. ML:0.6 3.23800365E-5 0.2176 AML other m 2021-11-04T11:43:48.63
GU.STV.HHN. ML:0.7 3.8086255E-5 0.0832 AML other m 2021-11-04T11:43:49.26
GU.PZZ.HHE. ML:0.8 2.7919485E-5 0.1792 AML other m 2021-11-04T11:43:53.04
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