Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.4 on date 18-07-2022 and time 15:02:01 (Italy) in region 2 km SE Pallare (SV)

A magnitude ML 0.4 (quarry blast) earthquake occured in region: 2 km SE Pallare (SV), on

  • 18-07-2022 13:02:01 (UTC)
  • 18-07-2022 15:02:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3130, 8.2870 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
Pallare SV 2 923 923
Mallare SV 3 1146 2069
Carcare SV 5 5587 7656
Altare SV 5 2108 9764
Bormida SV 6 387 10151
Plodio SV 6 650 10801
Cosseria SV 8 1105 11906
Osiglia SV 8 444 12350
Millesimo SV 9 3383 15733
Roccavignale SV 9 752 16485
Cairo Montenotte SV 10 13269 29754
Murialdo SV 10 841 30595
Quiliano SV 10 7232 37827
Rialto SV 10 564 38391
Cengio SV 10 3563 41954
Orco Feglino SV 11 890 42844
Vezzi Portio SV 11 809 43653
Calice Ligure SV 12 1730 45383
Vado Ligure SV 13 8336 53719
Castelnuovo di Ceva CN 13 110 53829
Montezemolo CN 14 259 54088
Magliolo SV 14 974 55062
Spotorno SV 14 3803 58865
Bergeggi SV 14 1129 59994
Saliceto CN 15 1323 61317
Tovo San Giacomo SV 15 2582 63899
Dego SV 15 1985 65884
Savona SV 16 61345 127229
Noli SV 16 2736 129965
Giustenice SV 16 977 130942
Calizzano SV 16 1475 132417
Perlo CN 16 116 132533
Finale Ligure SV 17 11711 144244
Camerana CN 17 631 144875
Borgio Verezzi SV 17 2205 147080
Priero CN 17 529 147609
Massimino SV 17 113 147722
Albissola Marina SV 17 5487 153209
Giusvalla SV 18 441 153650
Albisola Superiore SV 18 10163 163813
Pietra Ligure SV 18 8992 172805
Nucetto CN 18 430 173235
Bardineto SV 18 756 173991
Sale delle Langhe CN 19 486 174477
Pontinvrea SV 19 847 175324
Stella SV 19 3009 178333
Gottasecca CN 19 148 178481
Sale San Giovanni CN 19 183 178664
Piana Crixia SV 19 788 179452
Bagnasco CN 19 1035 180487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Savona (61345 inhabitants)
53 Km W of Genova (586655 inhabitants)
59 Km E of Cuneo (56081 inhabitants)
66 Km S of Asti (76202 inhabitants)
68 Km NE of Sanremo (54807 inhabitants)
72 Km SW of Alessandria (93943 inhabitants)
90 Km SE of Moncalieri (57294 inhabitants)
97 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 0.4 2022-07-18
13:02:01		 44.3132 8.2872 1 2023-01-31
19:03:50		 Bollettino Sismico Italiano INGV 110556131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-18 13:02:01 ± 0.24
Latitude 44.3132 ± 0.0225
Longitude 8.2872 ± 0.0251
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 110556131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2980
Semi-minor axis of confidence ellipse (meter) 1170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 324
Circular confidence region, given by single value of horizontal uncertainty (meter) 2980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.49643
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 110556131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-10-07 10:38:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GENL.EHN. 2022-07-18T13:02:12.44 0.3 undecidable manual P 79 55.1004 91 -0.37 66
GU.GBOS.HHZ. 2022-07-18T13:02:09.34 0.3 undecidable manual P 258 36.4413 91 0.27 70
GU.RORO.HHZ. 2022-07-18T13:02:07.36 0.3 undecidable manual P 218 28.3494 91 -0.09 74
GU.PCP.HHZ. 2022-07-18T13:02:07.86 0.3 undecidable manual P 39 32.5452 91 -0.44 68
GU.CANO.HHZ. 2022-07-18T13:02:04.12 0.1 undecidable manual P 199 12.3765 92 -0.13 100
IV.QLNO.HHZ. 2022-07-18T13:02:03.36 0.1 undecidable manual P 75 4.7952 96 0.62 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHN. ML:0.7 0.00007655 0.88 AML other m 2022-07-18T13:02:08.53
GU.PCP.HHE. ML:0.3 0.000007933088499999999 0.576 AML other m 2022-07-18T13:02:14.04
GU.GBOS.HHN. ML:0.4 0.000008641546 0.5568 AML other m 2022-07-18T13:02:17.78
GU.GBOS.HHE. ML:0.1 0.000005946903999999999 0.5824 AML other m 2022-07-18T13:02:22.08
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