Earthquake (quarry blast) with magnitude of Md 1.2 on date 03-04-2019 and time 16:34:48 (Italy) in region 1 km W Roccavignale (SV)

A magnitude Md 1.2 (quarry blast) earthquake occured in region: 1 km W Roccavignale (SV), on

  • 03-04-2019 14:34:48 (UTC)
  • 03-04-2019 16:34:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.36, 8.18 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
Roccavignale SV 1 752 752
Millesimo SV 2 3383 4135
Cengio SV 3 3563 7698
Montezemolo CN 4 259 7957
Cosseria SV 4 1105 9062
Castelnuovo di Ceva CN 4 110 9172
Plodio SV 5 650 9822
Murialdo SV 6 841 10663
Saliceto CN 6 1323 11986
Priero CN 7 529 12515
Camerana CN 7 631 13146
Pallare SV 8 923 14069
Cairo Montenotte SV 8 13269 27338
Carcare SV 9 5587 32925
Perlo CN 9 116 33041
Sale delle Langhe CN 9 486 33527
Osiglia SV 9 444 33971
Sale San Giovanni CN 9 183 34154
Bormida SV 10 387 34541
Nucetto CN 10 430 34971
Gottasecca CN 11 148 35119
Massimino SV 11 113 35232
Paroldo CN 12 211 35443
Mallare SV 12 1146 36589
Ceva CN 12 5782 42371
Monesiglio CN 13 645 43016
Bagnasco CN 13 1035 44051
Altare SV 13 2108 46159
Dego SV 14 1985 48144
Mombarcaro CN 14 268 48412
Roascio CN 14 97 48509
Torresina CN 14 52 48561
Castelletto Uzzone CN 14 331 48892
Prunetto CN 14 451 49343
Battifollo CN 15 219 49562
Calizzano SV 15 1475 51037
Scagnello CN 16 194 51231
Igliano CN 16 74 51305
Piana Crixia SV 17 788 52093
Gorzegno CN 17 304 52397
Mombasiglio CN 17 609 53006
San Benedetto Belbo CN 17 179 53185
Lisio CN 17 201 53386
Rialto SV 18 564 53950
Castellino Tanaro CN 18 312 54262
Lesegno CN 18 794 55056
Murazzano CN 18 834 55890
Priola CN 18 701 56591
Niella Belbo CN 19 372 56963
Marsaglia CN 19 245 57208
Viola CN 19 391 57599
Giusvalla SV 19 441 58040
Merana AL 19 189 58229
Bardineto SV 20 756 58985
Levice CN 20 231 59216
Monasterolo Casotto CN 20 89 59305
Orco Feglino SV 20 890 60195
Pezzolo Valle Uzzone CN 20 344 60539
Quiliano SV 20 7232 67771
Calice Ligure SV 20 1730 69501
Magliolo SV 20 974 70475

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of Savona (61345 inhabitants)
50 Km E of Cuneo (56081 inhabitants)
60 Km S of Asti (76202 inhabitants)
60 Km W of Genova (586655 inhabitants)
68 Km NE of Sanremo (54807 inhabitants)
70 Km SW of Alessandria (93943 inhabitants)
81 Km SE of Moncalieri (57294 inhabitants)
88 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 1.2 2019-04-03
14:34:48
44.36 8.18 1 2019-08-22
08:25:11
Bollettino Sismico Italiano INGV 70791391
Rev 100 Md 1.2 2019-04-03
14:34:48
44.33 8.21 9 2019-04-03
14:42:25
Sala Sismica INGV-Roma 67223281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-03 14:34:48 ± 0.19
Latitude 44.36 ± 0.01
Longitude 8.18 ± 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 70791391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1480
Semi-minor axis of confidence ellipse (meter) 840
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 331
Circular confidence region, given by single value of horizontal uncertainty (meter) 1480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude Md
Reference to an origin 70791391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-07-22 10:30:40

Md:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude Md
Reference to an origin 67223281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-03 14:42:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.PCP.HHZ. 2019-04-03T14:34:55.62 0.3 undecidable manual P 55 0.3121 91 -0.2 70
GU.GBOS.HHZ. 2019-04-03T14:34:55.17 0.1 undecidable manual P 244 0.2752 91 0.17 95
GU.RORO.HHZ. 2019-04-03T14:34:54.57 0.1 undecidable manual P 199 0.2662 91 -0.22 94
GU.CANO.HHZ. 2019-04-03T14:34:52.44 0.1 undecidable manual P 166 0.161 92 -0.02 100
IV.QLNO.HHZ. 2019-04-03T14:34:51.81 0.1 positive manual P 109 0.1223 92 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHZ. Md:1 7 END duration s
GU.RORO.HHZ. Md:1.2 8 END duration s
GU.GBOS.HHZ. Md:1.2 8 END duration s
GU.PCP.HHZ. Md:1.4 11 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