Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.1 on date 19-04-2019 and time 12:09:38 (Italy) in region 1 km SW Plodio (SV)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 1 km SW Plodio (SV), on

  • 19-04-2019 10:09:38 (UTC)
  • 19-04-2019 12:09:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3510, 8.2320 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
Plodio SV 1 650 650
Cosseria SV 2 1105 1755
Millesimo SV 3 3383 5138
Roccavignale SV 3 752 5890
Pallare SV 4 923 6813
Cengio SV 5 3563 10376
Carcare SV 5 5587 15963
Cairo Montenotte SV 7 13269 29232
Murialdo SV 7 841 30073
Montezemolo CN 8 259 30332
Bormida SV 8 387 30719
Castelnuovo di Ceva CN 8 110 30829
Osiglia SV 8 444 31273
Mallare SV 8 1146 32419
Saliceto CN 9 1323 33742
Altare SV 9 2108 35850
Camerana CN 11 631 36481
Priero CN 11 529 37010
Perlo CN 12 116 37126
Dego SV 13 1985 39111
Sale delle Langhe CN 13 486 39597
Sale San Giovanni CN 13 183 39780
Gottasecca CN 13 148 39928
Nucetto CN 14 430 40358
Massimino SV 14 113 40471
Rialto SV 15 564 41035
Paroldo CN 16 211 41246
Monesiglio CN 16 645 41891
Quiliano SV 16 7232 49123
Calizzano SV 16 1475 50598
Bagnasco CN 16 1035 51633
Ceva CN 16 5782 57415
Castelletto Uzzone CN 16 331 57746
Piana Crixia SV 16 788 58534
Orco Feglino SV 16 890 59424
Prunetto CN 17 451 59875
Calice Ligure SV 17 1730 61605
Vezzi Portio SV 17 809 62414
Giusvalla SV 17 441 62855
Mombarcaro CN 18 268 63123
Magliolo SV 18 974 64097
Battifollo CN 18 219 64316
Torresina CN 18 52 64368
Roascio CN 18 97 64465
Vado Ligure SV 19 8336 72801
Pontinvrea SV 19 847 73648
Merana AL 19 189 73837
Bardineto SV 19 756 74593
Gorzegno CN 20 304 74897
Tovo San Giacomo SV 20 2582 77479
Scagnello CN 20 194 77673
Giustenice SV 20 977 78650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Savona (61345 inhabitants)
54 Km E of Cuneo (56081 inhabitants)
56 Km W of Genova (586655 inhabitants)
61 Km S of Asti (76202 inhabitants)
69 Km NE of Sanremo (54807 inhabitants)
70 Km SW of Alessandria (93943 inhabitants)
84 Km SE of Moncalieri (57294 inhabitants)
91 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
Bulletin
Rev1000 		ML 1.1 2019-04-19
10:09:38		 44.3512 8.2322 1 2019-08-22
08:25:15		 Bollettino Sismico Italiano INGV 71278061
Reviewed
Rev100 		ML 1.1 2019-04-19
10:09:38		 44.3272 8.2728 10 2019-04-19
10:15:18		 Sala Sismica INGV-Roma 67740071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-19 10:09:38 ± 0.12
Latitude 44.3512 ± 0.0081
Longitude 8.2322 ± 0.0088
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 71278061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 970
Semi-minor axis of confidence ellipse (meter) 560
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) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 71278061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-08 15:51:34

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 67740071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-19 10:15:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RNI2.HHZ. 2019-04-19T10:11:18.65 3.0 undecidable manual Sn -0.44 0
IV.IST3.HHZ. 2019-04-19T10:11:02.36 3.0 negative manual Pn -4.01 0
IV.PARC.HHZ. 2019-04-19T10:10:29.91 3.0 undecidable manual Sg 4.9 0
ST.ZIAN.EHZ. 2019-04-19T10:10:26.63 3.0 undecidable manual Sn -5.64 0
IV.APEC.HHZ. 2019-04-19T10:10:24.25 3.0 undecidable manual Sn -4.55 0
IV.ARRO.EHZ. 2019-04-19T10:10:23.57 3.0 negative manual Pg 12.73 0
IV.RIBO.EHZ.01 2019-04-19T10:10:14.88 3.0 undecidable manual Sn -2.34 0
IV.LAV9.HNZ. 2019-04-19T10:10:14.80 3.0 positive manual Pn -4.04 0
IV.ZONE.HHZ. 2019-04-19T10:10:14.18 3.0 undecidable manual Sg 5.13 0
IV.CAVE.HHZ. 2019-04-19T10:10:06.98 3.0 undecidable manual Sg 4.16 0
SI.ROSI.HHZ. 2019-04-19T10:10:04.02 3.0 undecidable manual Pn -5.73 0
IV.BRSN.EHZ. 2019-04-19T10:10:01.99 3.0 undecidable manual Pg 6.27 0
IV.ZCCA.HHZ. 2019-04-19T10:09:57.81 3.0 undecidable manual S -1.93 0
IV.PE3.EHZ. 2019-04-19T10:09:57.36 3.0 undecidable manual Pn -3.9 0
GU.PCP.HHZ. 2019-04-19T10:09:45.03 0.3 undecidable manual P 49 32.5452 91 -0.11 71
GU.GBOS.HHZ. 2019-04-19T10:09:45.44 0.1 undecidable manual P 249 33.4443 91 0.12 95
GU.RORO.HHZ. 2019-04-19T10:09:44.34 0.3 undecidable manual P 207 29.6481 91 -0.21 70
IV.NDIM.HHZ. 2019-04-19T10:09:42.97 3.0 negative manual Pn -2.79 0
IV.PII.HHZ. 2019-04-19T10:09:41.42 3.0 undecidable manual Pn -2.01 0
IV.CTL8.HNZ. 2019-04-19T10:09:41.87 3.0 positive manual Pg -0.79 0
GU.CANO.HHZ. 2019-04-19T10:09:41.82 0.1 positive manual P 179 15.9729 92 0 100
IV.QLNO.HHZ. 2019-04-19T10:09:40.64 0.1 positive manual P 108 9.4794 93 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHN. ML:0.9 0.0000982 0.96 AML other m 2019-04-19T10:09:42.24
IV.QLNO.HHE. ML:1.3 0.0002255 0.62 AML other m 2019-04-19T10:09:43.02
GU.CANO.HHN. ML:1.1 0.0001385 0.24 AML other m 2019-04-19T10:09:44.66
GU.CANO.HHE. ML:1.1 0.000151 0.82 AML other m 2019-04-19T10:09:45.64
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