Earthquake (quarry blast) with magnitude of ML 0.7 on date 07-10-2021 and time 14:14:02 (Italy) in region 3 km S Bagnasco (CN)

A magnitude ML 0.7 (quarry blast) earthquake occured in region: 3 km S Bagnasco (CN), on

  • 07-10-2021 12:14:02 (UTC)
  • 07-10-2021 14:14:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.277, 8.039 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Event type: quarry blast.

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
Bagnasco CN 3 1035 1035
Priola CN 4 701 1736
Massimino SV 4 113 1849
Battifollo CN 5 219 2068
Lisio CN 6 201 2269
Viola CN 6 391 2660
Nucetto CN 7 430 3090
Perlo CN 7 116 3206
Scagnello CN 7 194 3400
Calizzano SV 8 1475 4875
Garessio CN 9 3244 8119
Monasterolo Casotto CN 10 89 8208
Pamparato CN 10 302 8510
Murialdo SV 11 841 9351
Mombasiglio CN 11 609 9960
Castelnuovo di Ceva CN 11 110 10070
Bardineto SV 12 756 10826
Priero CN 12 529 11355
Roburent CN 12 495 11850
Ceva CN 12 5782 17632
Osiglia SV 13 444 18076
Torre Mondovì CN 14 498 18574
Sale delle Langhe CN 14 486 19060
Montezemolo CN 14 259 19319
Sale San Giovanni CN 14 183 19502
Montaldo di Mondovì CN 15 557 20059
Lesegno CN 15 794 20853
San Michele Mondovì CN 15 2003 22856
Bormida SV 16 387 23243
Roccavignale SV 16 752 23995
Roascio CN 16 97 24092
Erli SV 16 245 24337
Millesimo SV 17 3383 27720
Torresina CN 17 52 27772
Castellino Tanaro CN 17 312 28084
Castelvecchio di Rocca Barbena SV 17 145 28229
Paroldo CN 18 211 28440
Ormea CN 18 1617 30057
Vicoforte CN 18 3136 33193
Nasino SV 18 207 33400
Niella Tanaro CN 18 1046 34446
Camerana CN 18 631 35077
Frabosa Soprana CN 18 759 35836
Cengio SV 18 3563 39399
Briaglia CN 18 318 39717
Saliceto CN 18 1323 41040
Castelbianco SV 18 330 41370
Monastero di Vasco CN 19 1297 42667
Plodio SV 19 650 43317
Igliano CN 19 74 43391
Cosseria SV 19 1105 44496
Alto CN 19 128 44624
Caprauna CN 19 104 44728
Frabosa Sottana CN 19 1497 46225
Zuccarello SV 19 309 46534
Magliolo SV 19 974 47508
Pallare SV 20 923 48431
Cigliè CN 20 190 48621
Rocca Cigliè CN 20 142 48763
Rialto SV 20 564 49327
Marsaglia CN 20 245 49572
Balestrino SV 20 595 50167

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Savona (61345 inhabitants)
41 Km E of Cuneo (56081 inhabitants)
55 Km NE of Sanremo (54807 inhabitants)
71 Km S of Asti (76202 inhabitants)
73 Km W of Genova (586655 inhabitants)
84 Km SW of Alessandria (93943 inhabitants)
85 Km SE of Moncalieri (57294 inhabitants)
93 Km SE of Torino (890529 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 0.7 2021-10-07
12:14:02
44.2773 8.039 5 2021-10-07
12:39:07
Sala Sismica INGV-Roma 96318921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-07 12:14:02 ± 0.08
Latitude 44.2773 ± 0.0054
Longitude 8.0390 ± 0.0038
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 96318921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 374
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44786
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 96318921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-07 12:39:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.COLB.HHZ. 2021-10-07T12:15:45.84 3.0 undecidable manual Pg 15.9 0
IV.TST02.HHZ. 2021-10-07T12:15:41.22 3.0 undecidable manual Pg 18.41 0
IV.CDRU.HHZ. 2021-10-07T12:15:37.39 3.0 undecidable manual Pn -4.83 0
IV.FIR.HHZ. 2021-10-07T12:15:20.66 3.0 undecidable manual Sg 4.38 0
TV.SU26.HHZ. 2021-10-07T12:15:18.42 3.0 undecidable manual Pn -4.32 0
IV.LPEL.HHZ. 2021-10-07T12:15:16.95 3.0 positive manual Pn -3.64 0
IV.MNTT.EHZ. 2021-10-07T12:15:08.14 3.0 positive manual Pn -1.16 0
IV.VIVA.HHZ. 2021-10-07T12:15:06.37 3.0 negative manual Pn -4.41 0
IV.CSP1.EHZ. 2021-10-07T12:15:04.34 3.0 undecidable manual Pn -1.12 0
IV.FREG.EHZ. 2021-10-07T12:15:00.10 3.0 negative manual Pn 2.15 0
IV.MURB.HNZ. 2021-10-07T12:14:53.97 3.0 negative manual Pn -4.26 0
IV.BRSN.HNZ. 2021-10-07T12:14:51.43 3.0 negative manual Pn 0.54 0
IV.MOCL.EHZ. 2021-10-07T12:14:48.46 3.0 undecidable manual Pg 5.93 0
IV.IMOL.HNZ. 2021-10-07T12:14:46.56 3.0 positive manual Pn -0.96 0
IV.ZEN8.EHZ. 2021-10-07T12:14:46.51 3.0 negative manual Pg 4.35 0
IV.RIBO.EHZ.01 2021-10-07T12:14:43.75 3.0 undecidable manual Pn -3.13 0
IV.PCN.EHZ. 2021-10-07T12:14:27.37 3.0 negative manual P -2.25 0
IV.SARZ.HNZ. 2021-10-07T12:14:27.67 3.0 undecidable manual S -6.26 0
IV.EUCT.HNZ. 2021-10-07T12:14:27.41 3.0 undecidable manual P 1.23 0
IV.MSSA.HHZ. 2021-10-07T12:14:23.22 3.0 undecidable manual P -2.43 0
GU.ROTM.HHZ. 2021-10-07T12:14:13.43 3.0 positive manual P -1.01 0
GU.PCP.HHE. 2021-10-07T12:14:12.13 0.6 undecidable manual P 54 0.4479 50 -0.07 47
GU.GBOS.HHZ. 2021-10-07T12:14:08.10 0.1 undecidable manual S 256 0.1466 106 -0.08 100
GU.CANO.HHZ. 2021-10-07T12:14:08.60 0.3 undecidable manual S 116 0.1583 105 0 76
GU.RORO.HHZ. 2021-10-07T12:14:08.72 0.3 undecidable manual S 173 0.1655 104 -0.17 73
GU.MGRO.HHE. 2021-10-07T12:14:08.75 0.3 undecidable manual P 215 0.2869 98 0 74
IV.QLNO.HHZ. 2021-10-07T12:14:07.21 0.3 undecidable manual P 78 0.2248 101 -0.17 73
GU.CANO.HHZ. 2021-10-07T12:14:06.07 0.1 undecidable manual P 116 0.1583 105 0.13 99
GU.RORO.HHZ. 2021-10-07T12:14:06.24 0.1 undecidable manual P 173 0.1655 104 0.13 99
GU.GBOS.HHZ. 2021-10-07T12:14:05.81 0.1 undecidable manual P 256 0.1466 106 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:0.2 1.6527365E-5 1.184 AML other m 2021-10-07T12:14:08.39
GU.GBOS.HHN. ML:0.3 1.8632325E-5 1.2224 AML other m 2021-10-07T12:14:08.24
GU.CANO.HHE. ML:0.6 4.0710355E-5 0.96 AML other m 2021-10-07T12:14:08.68
GU.CANO.HHN. ML:1 8.4254815E-5 2.2784 AML other m 2021-10-07T12:14:09.42
GU.RORO.HHE. ML:1.2 0.000132860685 1.856 AML other m 2021-10-07T12:14:09.38
GU.RORO.HHN. ML:0.4 1.799646E-5 1.0176 AML other m 2021-10-07T12:14:09.10
IV.QLNO.HHE. ML:0.5 2.032304E-5 1.7216 AML other m 2021-10-07T12:14:08.41
IV.QLNO.HHN. ML:0.7 3.447782E-5 3.0016 AML other m 2021-10-07T12:14:09.90
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