Earthquake (quarry blast) with magnitude of ML 1.3 on date 22-08-2019 and time 09:01:10 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.3 (quarry blast) earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 22-08-2019 09:01:10 (UTC)
  • 22-08-2019 11:01:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.94, 8.17 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
Andora SV 4 7552 7552
Laigueglia SV 4 1810 9362
Cervo IM 5 1187 10549
San Bartolomeo al Mare IM 6 3129 13678
Villa Faraldi IM 7 444 14122
Diano Marina IM 8 5977 20099
Alassio SV 8 10934 31033
Diano San Pietro IM 8 1145 32178
Diano Castello IM 9 2214 34392
Diano Arentino IM 10 722 35114
Stellanello SV 11 808 35922
Villanova d'Albenga SV 12 2657 38579
Garlenda SV 12 1254 39833
Pontedassio IM 13 2323 42156
Albenga SV 13 24213 66369
Imperia IM 13 42034 108403
Testico SV 14 196 108599
Casanova Lerrone SV 14 749 109348
Ortovero SV 15 1586 110934
Chiusanico IM 15 607 111541
Chiusavecchia IM 16 577 112118
Arnasco SV 17 645 112763
Cisano sul Neva SV 17 2085 114848
Vendone SV 17 388 115236
Lucinasco IM 17 272 115508
Vasia IM 17 389 115897
Cesio IM 18 283 116180
Onzo SV 18 219 116399
Dolcedo IM 18 1415 117814
Caravonica IM 18 282 118096
Ceriale SV 18 5561 123657
Ranzo IM 19 557 124214
Borgomaro IM 19 865 125079
Civezza IM 19 609 125688
PrelĂ  IM 19 503 126191
San Lorenzo al Mare IM 19 1297 127488
Zuccarello SV 20 309 127797

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Sanremo (54807 inhabitants)
48 Km SW of Savona (61345 inhabitants)
71 Km SE of Cuneo (56081 inhabitants)
80 Km SW of Genova (586655 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 1.3 2019-08-22
09:01:10
43.94 8.17 1 2019-11-13
14:31:07
Bollettino Sismico Italiano INGV 73292831
Reviewed
Rev100
ML 1.3 2019-08-22
09:01:12
44.09 8.17 11 2019-08-22
09:14:02
Sala Sismica INGV-Roma 71695381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-22 09:01:10 ± 0.59
Latitude 43.94 ± 0.03
Longitude 8.17 ± 0.04
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 73292831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4080
Semi-minor axis of confidence ellipse (meter) 1190
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 315
Circular confidence region, given by single value of horizontal uncertainty (meter) 4080
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 233
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.68079
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73292831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-16 21:24:08

ML:1.3

Field Value
Value 1.3
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 71695381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-22 09:14:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCRV.HHZ. 2019-08-22T09:03:05.43 3.0 undecidable manual Pg 19.870001 0
IV.SGTA.HNZ. 2019-08-22T09:03:03.02 3.0 negative manual Pg 18.35 0
IT.VNF1.HGZ. 2019-08-22T09:02:35.83 3.0 positive manual Pn 5.27 0
TV.SF04.EHZ. 2019-08-22T09:02:33.65 3.0 undecidable manual Sn -3 0
IV.CERA.HHZ. 2019-08-22T09:02:32.17 3.0 negative manual Pn 2.74 0
OX.MPRI.HHZ. 2019-08-22T09:02:26.36 3.0 negative manual Pg 9.46 0
IV.MAGA.HHZ. 2019-08-22T09:01:58.07 3.0 negative manual Pg 3.19 0
IV.TREG.HNZ. 2019-08-22T09:01:55.16 3.0 undecidable manual Pn -1.64 0
IV.BOB.HHZ. 2019-08-22T09:01:53.02 3.0 undecidable manual S -2.88 0
IV.OSSC.HHZ. 2019-08-22T09:01:52.43 3.0 negative manual Pn -0.45 0
IV.NDIM.HNZ. 2019-08-22T09:01:51.23 3.0 undecidable manual Pn 0.71 0
MN.BNI.HHZ. 2019-08-22T09:01:42.25 3.0 undecidable manual Pg 1.89 0
GU.STV.HHZ. 2019-08-22T09:01:24.80 0.1 undecidable manual P 297 0.6808 50 -0.3 89
GU.ENR.HHN. 2019-08-22T09:01:23.22 0.3 undecidable manual P 298 0.6124 50 -0.71 60
GU.BURY.HNN. 2019-08-22T09:01:21.45 0.3 undecidable manual P 251 0.4703 91 0.32 70
FR.SAOF.HHZ.00 2019-08-22T09:01:20.49 0.3 undecidable manual P 276 0.4488 91 -0.16 72
GU.GBOS.HHZ. 2019-08-22T09:01:19.08 0.1 undecidable manual P 322 0.3867 91 -0.19 97
IV.QLNO.HHE. 2019-08-22T09:01:19.41 0.1 undecidable manual P 18 0.4056 91 -0.29 95
GU.CANO.HHZ. 2019-08-22T09:01:17.02 0.1 undecidable manual P 10 0.2734 91 0.26 98
GU.RORO.HHZ. 2019-08-22T09:01:15.54 0.1 undecidable manual P 336 0.1907 91 0.63 90
IV.IMI.HHN. 2019-08-22T09:01:15.42 0.1 undecidable manual P 262 0.2032 91 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHN. ML:1.6 0.0001995 0.8 AML other m 2019-08-22T09:01:18.95
GU.CANO.HHE. ML:1.5 0.0001675 0.78 AML other m 2019-08-22T09:01:18.78
GU.STV.HHN. ML:1.1 1.89E-5 0.6 AML other m 2019-08-22T09:01:28.05
GU.STV.HHE. ML:1.1 1.845E-5 0.86 AML other m 2019-08-22T09:01:28.12
FR.SAOF.HHE.00 ML:1.2 4.045E-5 0.56 AML other m 2019-08-22T09:01:31.46
FR.SAOF.HHN.00 ML:1.2 4.07E-5 0.54 AML other m 2019-08-22T09:01:32.01
IV.MAGA.HHE. ML:3.2 0.0002355 1.92 AML other m 2019-08-22T09:02:00.96
IV.MAGA.HHN. ML:3 0.000142 0.98 AML other m 2019-08-22T09:02:01.49
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