Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.6 on date 30-10-2020 and time 15:53:25 (UTC) in region 2 km S Zuccarello (SV)

A magnitude ML 0.6 (quarry blast) earthquake occured in region: 2 km S Zuccarello (SV), on

  • 30-10-2020 15:53:25 (UTC)
  • 30-10-2020 16:53:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0960, 8.1190 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Zuccarello SV 2 309 309
Arnasco SV 2 645 954
Cisano sul Neva SV 2 2085 3039
Castelvecchio di Rocca Barbena SV 4 145 3184
Castelbianco SV 4 330 3514
Vendone SV 4 388 3902
Erli SV 5 245 4147
Ortovero SV 5 1586 5733
Balestrino SV 6 595 6328
Villanova d'Albenga SV 6 2657 8985
Onzo SV 6 219 9204
Garlenda SV 7 1254 10458
Nasino SV 8 207 10665
Toirano SV 8 2644 13309
Casanova Lerrone SV 9 749 14058
Aquila d'Arroscia IM 9 166 14224
Ceriale SV 9 5561 19785
Albenga SV 9 24213 43998
Ranzo IM 9 557 44555
Boissano SV 9 2492 47047
Alto CN 9 128 47175
Borghetto Santo Spirito SV 10 4948 52123
Alassio SV 11 10934 63057
Bardineto SV 11 756 63813
Stellanello SV 12 808 64621
Borghetto d'Arroscia IM 12 456 65077
Loano SV 12 11407 76484
Testico SV 12 196 76680
Caprauna CN 13 104 76784
Giustenice SV 13 977 77761
Garessio CN 13 3244 81005
Vessalico IM 14 282 81287
Laigueglia SV 14 1810 83097
Pietra Ligure SV 14 8992 92089
Villa Faraldi IM 14 444 92533
Cesio IM 15 283 92816
Magliolo SV 15 974 93790
Tovo San Giacomo SV 15 2582 96372
Andora SV 15 7552 103924
Calizzano SV 16 1475 105399
Armo IM 16 111 105510
Borgio Verezzi SV 17 2205 107715
Chiusanico IM 17 607 108322
Pieve di Teco IM 17 1338 109660
Caravonica IM 17 282 109942
Diano Arentino IM 18 722 110664
Ormea CN 18 1617 112281
Chiusavecchia IM 18 577 112858
Priola CN 18 701 113559
San Bartolomeo al Mare IM 19 3129 116688
Calice Ligure SV 19 1730 118418
Rialto SV 19 564 118982
Diano San Pietro IM 19 1145 120127
Lucinasco IM 19 272 120399
Cervo IM 19 1187 121586
Borgomaro IM 19 865 122451
Pontedassio IM 19 2323 124774
Diano Castello IM 20 2214 126988
Finale Ligure SV 20 11711 138699
Aurigo IM 20 347 139046

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Savona (61345 inhabitants)
41 Km NE of Sanremo (54807 inhabitants)
56 Km SE of Cuneo (56081 inhabitants)
74 Km W of Genova (586655 inhabitants)
90 Km S of Asti (76202 inhabitants)
99 Km SW of Alessandria (93943 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
Bulletin
Rev1000 		ML 0.6 2020-10-30
15:53:25		 44.0962 8.1192 1 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85499181
Reviewed
Rev100 		ML 0.6 2020-10-30
15:53:26		 44.1148 8.0915 5 2020-10-30
16:02:09		 Sala Sismica INGV-Roma 84269871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-30 15:53:25 ± 0.31
Latitude 44.0962 ± 0.0171
Longitude 8.1192 ± 0.0225
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 85499181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2200
Semi-minor axis of confidence ellipse (meter) 1440
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 318
Circular confidence region, given by single value of horizontal uncertainty (meter) 2200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 4
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24731
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 85499181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-17 17:36:53

ML:0.6

Field Value
Value 0.6
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 84269871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-30 16:02:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2020-10-30T15:54:37.88 3.0 undecidable manual Pg 13.37 0
IV.SPS2.HHZ. 2020-10-30T15:54:34.45 3.0 positive manual Pg 15.92 0
IV.VAGA.HHZ. 2020-10-30T15:54:30.81 3.0 undecidable manual Sg 8.53 0
XK.GIZZ.HHZ. 2020-10-30T15:54:26.12 3.0 negative manual Pn 4.78 0
GU.TRAV.HHZ. 2020-10-30T15:54:25.74 3.0 undecidable manual Sg 14.47 0
IV.RNI2.HHZ. 2020-10-30T15:54:17.30 3.0 undecidable manual Sn 1.64 0
IT.PLTA.HNZ. 2020-10-30T15:54:16.97 3.0 undecidable manual Sn -2.79 0
IV.MRVN.HHZ. 2020-10-30T15:54:12.93 3.0 undecidable manual Pg 14.08 0
IV.VVLD.HHZ. 2020-10-30T15:54:09.34 3.0 undecidable manual Sn 2.45 0
IV.VIVA.HHZ. 2020-10-30T15:54:03.34 3.0 undecidable manual Sn 0.58 0
GU.REMY.HHZ. 2020-10-30T15:53:46.55 3.0 undecidable manual Pn 3.71 0
IV.LAV9.HHZ. 2020-10-30T15:53:42.26 3.0 undecidable manual Pg 10.53 0
IV.MMO1.EHZ. 2020-10-30T15:53:40.79 3.0 undecidable manual Sn -2.78 0
IV.RNI2.HHZ. 2020-10-30T15:53:33.30 3.0 undecidable manual Pn -4.97 0
IV.VIVA.HHZ. 2020-10-30T15:53:31.44 3.0 undecidable manual Pn 0.42 0
IV.IMI.HHZ. 2020-10-30T15:53:31.38 0.3 undecidable manual P 221 27.3504 91 -0.04 75
GU.GBOS.HHZ. 2020-10-30T15:53:31.12 0.3 undecidable manual P 306 27.4503 91 -0.32 71
GU.CANO.HHZ. 2020-10-30T15:53:29.08 0.3 undecidable manual P 37 15.5733 92 0.03 77
IV.MMO1.EHZ. 2020-10-30T15:53:28.51 3.0 undecidable manual Pg 8.27 0
GU.RORO.HHZ. 2020-10-30T15:53:27.10 0.1 undecidable manual P 293 4.5954 96 0.24 100
IV.MNTT.EHZ. 2020-10-30T15:53:22.41 3.0 negative manual Pn 1.71 0
IV.APEC.HHZ. 2020-10-30T15:53:18.55 3.0 undecidable manual S -2.22 0
IV.ARRO.EHZ. 2020-10-30T15:53:18.48 3.0 negative manual Pn -2.06 0
IV.NDIM.HHZ. 2020-10-30T15:53:17.05 3.0 undecidable manual S -0.64 0
IV.CSNT.HHZ. 2020-10-30T15:53:16.61 3.0 undecidable manual S -0.9 0
GU.CARD.HHZ. 2020-10-30T15:53:16.27 3.0 undecidable manual S -1.53 0
IV.FIR.HHZ. 2020-10-30T15:53:09.06 3.0 undecidable manual S -0.92 0
GU.POPM.HHZ. 2020-10-30T15:53:06.47 3.0 negative manual P 3.44 0
IV.IMOL.HNZ. 2020-10-30T15:52:58.60 3.0 undecidable manual S -1.84 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHN. ML:0.6 0.000045742165 1.7952 AML other m 2020-10-30T15:53:32.99
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