Earthquake (quarry blast) with magnitude of ML 0.5 on date 04-12-2018 and time 14:46:30 (Italy) in region 1 km W Bagnasco (CN)

A magnitude ML 0.5 (quarry blast) earthquake occured in region: 1 km W Bagnasco (CN), on

  • 04-12-2018 13:46:30 (UTC)
  • 04-12-2018 14:46:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3, 8.03 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 1 1035 1035
Battifollo CN 2 219 1254
Massimino SV 3 113 1367
Lisio CN 4 201 1568
Scagnello CN 5 194 1762
Nucetto CN 5 430 2192
Viola CN 5 391 2583
Perlo CN 5 116 2699
Priola CN 7 701 3400
Monasterolo Casotto CN 8 89 3489
Mombasiglio CN 8 609 4098
Ceva CN 9 5782 9880
Priero CN 10 529 10409
Pamparato CN 10 302 10711
Castelnuovo di Ceva CN 10 110 10821
Calizzano SV 10 1475 12296
Murialdo SV 11 841 13137
Roburent CN 11 495 13632
Sale delle Langhe CN 11 486 14118
Sale San Giovanni CN 11 183 14301
Torre Mondovì CN 12 498 14799
Garessio CN 12 3244 18043
Lesegno CN 12 794 18837
Montezemolo CN 12 259 19096
San Michele Mondovì CN 13 2003 21099
Roascio CN 13 97 21196
Montaldo di Mondovì CN 13 557 21753
Osiglia SV 14 444 22197
Castellino Tanaro CN 14 312 22509
Torresina CN 14 52 22561
Roccavignale SV 15 752 23313
Paroldo CN 15 211 23524
Bardineto SV 15 756 24280
Niella Tanaro CN 15 1046 25326
Vicoforte CN 15 3136 28462
Igliano CN 16 74 28536
Millesimo SV 16 3383 31919
Briaglia CN 16 318 32237
Camerana CN 16 631 32868
Saliceto CN 16 1323 34191
Bormida SV 17 387 34578
Cigliè CN 17 190 34768
Rocca Cigliè CN 17 142 34910
Marsaglia CN 17 245 35155
Monastero di Vasco CN 17 1297 36452
Cengio SV 17 3563 40015
Frabosa Soprana CN 18 759 40774
Cosseria SV 18 1105 41879
Plodio SV 18 650 42529
Frabosa Sottana CN 18 1497 44026
Bastia Mondovì CN 19 669 44695
Mombarcaro CN 19 268 44963
Murazzano CN 19 834 45797
Mondovì CN 19 22484 68281
Monesiglio CN 19 645 68926
Erli SV 20 245 69171
Ormea CN 20 1617 70788
Pallare SV 20 923 71711

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Savona (61345 inhabitants)
39 Km E of Cuneo (56081 inhabitants)
57 Km NE of Sanremo (54807 inhabitants)
68 Km S of Asti (76202 inhabitants)
73 Km W of Genova (586655 inhabitants)
82 Km SW of Alessandria (93943 inhabitants)
82 Km SE of Moncalieri (57294 inhabitants)
90 Km SE of Torino (890529 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 0.5 2018-12-04
13:46:30
44.31 8.03 1 2019-06-04
09:16:16
Bollettino Sismico Italiano INGV 68359811
Rev 100 ML 0.5 2018-12-04
13:46:30
44.29 8.04 8 2018-12-04
14:15:58
Sala Sismica INGV-Roma 63634741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-04 13:46:30 ± 0.27
Latitude 44.31 ± 0.02
Longitude 8.03 ± 0.01
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 68359811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2460
Semi-minor axis of confidence ellipse (meter) 1020
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 2460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44337
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 68359811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-08 14:39:32

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 63634741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-04 14:15:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SALB.HHZ. 2018-12-04T13:48:24.14 3.0 negative manual Pn 20.18 0
MN.TRI.HHZ. 2018-12-04T13:48:21.85 3.0 undecidable manual Sn -9.18 0
IV.RM33.HNZ. 2018-12-04T13:48:17.97 3.0 undecidable manual Sn 6.43 0
IV.BORM.HNZ. 2018-12-04T13:47:58.54 3.0 undecidable manual Sg 1.43 0
IV.VVLD.HHZ. 2018-12-04T13:47:50.29 3.0 undecidable manual Pg 23.610001 0
MN.TRI.HHZ. 2018-12-04T13:47:49.95 3.0 undecidable manual Pg 18.68 0
IV.VIVA.HHZ. 2018-12-04T13:47:49.88 3.0 undecidable manual Pg 30.860001 0
IV.RM33.HNZ. 2018-12-04T13:47:42.21 3.0 undecidable manual Pg 21.889999 0
IV.CAVE.HHZ. 2018-12-04T13:47:40.38 3.0 undecidable manual Sg 1.23 0
GU.MAIM.HHZ. 2018-12-04T13:47:18.27 3.0 undecidable manual Sn -4.02 0
IV.NDIM.HHZ. 2018-12-04T13:47:05.52 3.0 positive manual Pg 4.15 0
GU.TRAV.HHZ. 2018-12-04T13:46:49.45 3.0 undecidable manual Pn -0.13 0
GU.ENR.HHZ. 2018-12-04T13:46:39.69 0.3 undecidable manual P 260 0.4434 91 -0.42 66
IV.QLNO.HHZ. 2018-12-04T13:46:35.40 0.3 undecidable manual P 85 0.2266 91 0.09 74
GU.CANO.HHZ. 2018-12-04T13:46:34.16 0.1 undecidable manual P 123 0.1781 91 -0.05 100
GU.RORO.HHZ. 2018-12-04T13:46:34.52 0.3 undecidable manual P 172 0.1943 91 -0.07 75
GU.GBOS.HHZ. 2018-12-04T13:46:33.93 0.1 undecidable manual P 245 0.1502 92 0.33 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:0.2 1.29841285E-5 0.1152 AML other m 2018-12-04T13:46:36.92
GU.GBOS.HHN. ML:0.6 3.807111E-5 0.0416 AML other m 2018-12-04T13:46:36.98
GU.CANO.HHN. ML:0.7 4.3192996E-5 0.1216 AML other m 2018-12-04T13:46:37.24
GU.RORO.HHE. ML:0.4 2.071301E-5 0.1024 AML other m 2018-12-04T13:46:37.54
GU.RORO.HHN. ML:0.4 2.16753835E-5 0.0768 AML other m 2018-12-04T13:46:38.27
GU.CANO.HHE. ML:0.9 6.2644895E-5 0.7232 AML other m 2018-12-04T13:46:38.93
IV.RM33.HNE. ML:0 0.0014135 0.82 AML other m 2018-12-04T13:48:19.95
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