Earthquake (quarry blast) with magnitude of ML 0.8 on date 20-05-2019 and time 15:47:17 (UTC) in region 2 km E Montezemolo (CN)

A magnitude ML 0.8 (quarry blast) earthquake occured in region: 2 km E Montezemolo (CN), on

  • 20-05-2019 15:47:17 (UTC)
  • 20-05-2019 17:47:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.37, 8.16 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
Montezemolo CN 2 259 259
Roccavignale SV 2 752 1011
Castelnuovo di Ceva CN 3 110 1121
Millesimo SV 3 3383 4504
Cengio SV 4 3563 8067
Saliceto CN 5 1323 9390
Cosseria SV 6 1105 10495
Priero CN 6 529 11024
Murialdo SV 6 841 11865
Camerana CN 6 631 12496
Plodio SV 7 650 13146
Sale delle Langhe CN 7 486 13632
Sale San Giovanni CN 8 183 13815
Perlo CN 8 116 13931
Nucetto CN 9 430 14361
Cairo Montenotte SV 9 13269 27630
Pallare SV 10 923 28553
Paroldo CN 10 211 28764
Carcare SV 10 5587 34351
Gottasecca CN 10 148 34499
Ceva CN 10 5782 40281
Osiglia SV 10 444 40725
Massimino SV 11 113 40838
Monesiglio CN 11 645 41483
Bormida SV 12 387 41870
Bagnasco CN 12 1035 42905
Torresina CN 12 52 42957
Roascio CN 12 97 43054
Mombarcaro CN 13 268 43322
Prunetto CN 13 451 43773
Battifollo CN 14 219 43992
Castelletto Uzzone CN 14 331 44323
Mallare SV 14 1146 45469
Igliano CN 15 74 45543
Dego SV 15 1985 47528
Scagnello CN 15 194 47722
Altare SV 15 2108 49830
Mombasiglio CN 15 609 50439
Calizzano SV 16 1475 51914
San Benedetto Belbo CN 16 179 52093
Castellino Tanaro CN 16 312 52405
Gorzegno CN 16 304 52709
Lesegno CN 16 794 53503
Lisio CN 16 201 53704
Murazzano CN 16 834 54538
Marsaglia CN 17 245 54783
Piana Crixia SV 17 788 55571
Niella Belbo CN 17 372 55943
Priola CN 18 701 56644
Viola CN 18 391 57035
Monasterolo Casotto CN 18 89 57124
Levice CN 19 231 57355
Rocca Cigliè CN 19 142 57497
Bonvicino CN 19 92 57589
Rialto SV 19 564 58153
Pezzolo Valle Uzzone CN 19 344 58497
Bossolasco CN 19 679 59176
Merana AL 20 189 59365
Feisoglio CN 20 316 59681
Bergolo CN 20 71 59752
Niella Tanaro CN 20 1046 60798
Bardineto SV 20 756 61554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Savona (61345 inhabitants)
49 Km E of Cuneo (56081 inhabitants)
59 Km S of Asti (76202 inhabitants)
61 Km W of Genova (586655 inhabitants)
68 Km NE of Sanremo (54807 inhabitants)
70 Km SW of Alessandria (93943 inhabitants)
80 Km SE of Moncalieri (57294 inhabitants)
87 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 Md 1.4
ML 0.8
2019-05-20
15:47:17
44.37 8.16 1 2019-11-13
14:30:58
Bollettino Sismico Italiano INGV 71688091
Rev 100 Md 1.4 2019-05-20
15:47:17
44.32 8.23 11 2019-05-20
15:53:37
Sala Sismica INGV-Roma 68731471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-20 15:47:17 ± 0.2
Latitude 44.37 ± 0.01
Longitude 8.16 ± 0.02
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 71688091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1650
Semi-minor axis of confidence ellipse (meter) 980
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 333
Circular confidence region, given by single value of horizontal uncertainty (meter) 1650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.1376
Epicentral distance of station farthest from the epicenter (degree) 0.55128
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 71688091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-20 10:22:06

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 5
Type of magnitude Md
Reference to an origin 71688091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-20 10:22:06

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 5
Type of magnitude Md
Reference to an origin 68731471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-20 15:53:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.ENR.HHZ. 2019-05-20T15:47:29.14 0.1 undecidable manual P 255 0.5513 50 -0.26 90
IV.IMI.HHN. 2019-05-20T15:47:27.77 0.6 undecidable manual P 203 0.5 91 -0.54 43
GU.PCP.HHZ. 2019-05-20T15:47:24.23 0.1 undecidable manual P 58 0.3202 91 -0.08 98
GU.RORO.HHZ. 2019-05-20T15:47:23.11 0.1 undecidable manual P 195 0.268 91 -0.05 100
GU.GBOS.HHZ. 2019-05-20T15:47:23.75 0.3 undecidable manual P 241 0.2662 91 0.65 64
GU.CANO.HHZ. 2019-05-20T15:47:21.00 0.3 undecidable manual P 162 0.1718 92 0 77
IV.QLNO.HHZ. 2019-05-20T15:47:20.42 0.1 undecidable manual P 110 0.1376 92 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHN. ML:0.9 6.695426E-5 0.2176 AML other m 2019-05-20T15:47:23.85
IV.QLNO.HHN. ML:0.9 8.3803345E-5 0.5376 AML other m 2019-05-20T15:47:24.15
GU.PCP.HHE. ML:1 4.552801E-5 1.4464 AML other m 2019-05-20T15:47:23.67
IV.QLNO.HHE. ML:0.9 8.3284635E-5 0.3968 AML other m 2019-05-20T15:47:24.43
GU.CANO.HHE. ML:1.2 0.00013042825 1.088 AML other m 2019-05-20T15:47:26.50
GU.RORO.HHN. ML:0.7 2.5197445E-5 0.1792 AML other m 2019-05-20T15:47:27.71
GU.RORO.HHE. ML:0.5 1.65979555E-5 0.2048 AML other m 2019-05-20T15:47:27.93
GU.PCP.HHN. ML:1 3.9403775E-5 1.0496 AML other m 2019-05-20T15:47:32.45
GU.GBOS.HHE. ML:0.3 1.244123E-5 0.896 AML other m 2019-05-20T15:47:34.48
GU.GBOS.HHN. ML:1.9 0.00040133085 0.4736 AML other m 2019-05-20T15:47:36.88
GU.ENR.HHN. ML:0.7 1.028032155E-5 0.0896 AML other m 2019-05-20T15:47:37.65
GU.ENR.HHE. ML:0.7 1.1295795E-5 0.1024 AML other m 2019-05-20T15:47:40.56
IV.QLNO.HHZ. Md:1.2 10 END duration s
GU.CANO.HHZ. Md:1.5 13 END duration s
GU.RORO.HHZ. Md:1.4 11 END duration s
GU.GBOS.HHZ. Md:1.4 12 END duration s
GU.PCP.HHZ. Md:1.6 14 END duration s
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