Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 06-08-2023 and time 18:22:54 (Italy) in region 3 km W Vergato (BO)

A magnitude ML 1.7 earthquake occured in region: 3 km W Vergato (BO), on

  • 06-08-2023 16:22:54 (UTC)
  • 06-08-2023 18:22:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2720, 11.0760 at 15 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Vergato BO 3 7639 7639
Castel d'Aiano BO 6 1906 9545
Grizzana Morandi BO 6 3916 13461
Zocca MO 10 4719 18180
Montese MO 11 3353 21533
Camugnano BO 11 1885 23418
Castel di Casio BO 12 3448 26866
Marzabotto BO 13 6779 33645
Gaggio Montano BO 14 4878 38523
San Benedetto Val di Sambro BO 14 4315 42838
Alto Reno Terme BO 15 6960 49798
Castiglione dei Pepoli BO 16 5648 55446
Monzuno BO 16 6328 61774
Lizzano in Belvedere BO 19 2212 63986
Sasso Marconi BO 19 14735 78721
Sambuca Pistoiese PT 20 1626 80347
Loiano BO 20 4294 84641
Guiglia MO 20 3931 88572

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Bologna (386663 inhabitants)
40 Km NE of Pistoia (90315 inhabitants)
43 Km S of Modena (184973 inhabitants)
43 Km N of Prato (191150 inhabitants)
52 Km W of Imola (69797 inhabitants)
58 Km N of Scandicci (50609 inhabitants)
58 Km N of Firenze (382808 inhabitants)
59 Km S of Carpi (70699 inhabitants)
59 Km SE of Reggio nell'Emilia (171345 inhabitants)
64 Km W of Faenza (58541 inhabitants)
66 Km NE of Lucca (89046 inhabitants)
76 Km SW of Ferrara (133155 inhabitants)
77 Km W of Forlì (117913 inhabitants)
79 Km E of Massa (69479 inhabitants)
80 Km NE of Viareggio (62467 inhabitants)
81 Km E of Carrara (63133 inhabitants)
82 Km NE of Pisa (89158 inhabitants)
84 Km SE of Parma (192836 inhabitants)
91 Km W of Ravenna (159116 inhabitants)
94 Km W of Cesena (96758 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
Reviewed
Rev100 		ML 1.7 2023-08-06
16:22:54		 44.2715 11.0757 15 2023-08-06
16:29:14		 Sala Sismica INGV-Roma 119910711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-06 16:22:54 ± 0.11
Latitude 44.2715 ± 0.0054
Longitude 11.0757 ± 0.0063
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119910711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 640
Semi-minor axis of confidence ellipse (meter) 110
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 198
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50632
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 119910711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-06 16:29:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2023-08-06T16:23:36.83 3.0 undecidable manual S -0.08 0
MN.VLC.HHZ. 2023-08-06T16:23:12.62 0.6 undecidable manual S 257 56.1993 95 0.37 45
IV.BDI.HHZ. 2023-08-06T16:23:09.17 0.6 undecidable manual S 239 44.7219 97 -0.02 48
IV.MPPT.EHZ. 2023-08-06T16:23:06.77 0.6 undecidable manual S 178 34.8429 100 0.17 48
GU.POPM.HHZ. 2023-08-06T16:23:06.77 0.3 undecidable manual S 225 35.742 99 -0.05 73
IV.SEI.HHZ. 2023-08-06T16:23:05.98 0.6 undecidable manual S 137 32.9448 101 -0.12 48
MN.VLC.HHZ. 2023-08-06T16:23:05.13 0.1 undecidable manual P 257 56.1993 95 0.27 91
IV.VISG.HHZ. 2023-08-06T16:23:05.47 0.6 undecidable manual S 108 29.9478 102 0.16 49
IV.MOCL.EHZ. 2023-08-06T16:23:05.36 0.6 undecidable manual S 164 30.747 102 -0.16 48
IV.PSL.EHZ. 2023-08-06T16:23:05.65 0.6 undecidable manual S 202 31.4463 101 -0.05 49
IV.BDI.HHZ. 2023-08-06T16:23:02.98 0.1 undecidable manual P 239 44.7219 97 -0.11 95
IV.FNVD.HHZ. 2023-08-06T16:23:01.76 0.6 undecidable manual S 162 12.0768 132 0.78 43
IV.PSL.EHZ. 2023-08-06T16:23:01.05 0.1 positive manual P 202 31.4463 101 -0.02 99
IV.SEI.HHZ. 2023-08-06T16:23:01.20 0.3 undecidable manual P 137 32.9448 101 -0.11 73
IV.ZCCA.HNE. 2023-08-06T16:23:01.03 0.6 undecidable manual S 318 11.7771 132 0.1 51
IV.MPPT.EHZ. 2023-08-06T16:23:01.58 0.1 undecidable manual P 178 34.8429 100 -0.01 99
IV.MOCL.EHZ. 2023-08-06T16:23:01.00 0.1 positive manual P 164 30.747 102 0.03 100
GU.POPM.HHZ. 2023-08-06T16:23:01.68 0.1 positive manual P 225 35.742 99 -0.04 98
IV.MTRZ.HHZ. 2023-08-06T16:23:00.93 0.1 undecidable manual P 80 28.0497 104 0.36 94
IV.VISG.HHZ. 2023-08-06T16:23:00.69 0.1 undecidable manual P 108 29.9478 102 -0.16 97
IV.FNVD.HHZ. 2023-08-06T16:22:57.90 0.1 positive manual P 162 12.0768 132 -0.45 93
IV.ZCCA.HNE. 2023-08-06T16:22:57.99 0.1 undecidable manual P 318 11.7771 132 -0.33 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FNVD.HHN. ML:1.4 0.000243 0.1 AML other m 2023-08-06T16:23:02.39
IV.FNVD.HHE. ML:1.7 0.0004835 0.64 AML other m 2023-08-06T16:23:02.29
IV.MOCL.EHE. ML:1.8 0.000248 0.5 AML other m 2023-08-06T16:23:06.28
IV.VISG.HHN. ML:1.3 0.00009545 0.86 AML other m 2023-08-06T16:23:06.52
IV.SEI.HHN. ML:2.0 0.00039349999999999997 0.7 AML other m 2023-08-06T16:23:06.91
IV.MOCL.EHN. ML:1.6 0.00016450000000000001 0.72 AML other m 2023-08-06T16:23:07.62
GU.POPM.HHE. ML:2.0 0.00039949999999999995 0.18 AML other m 2023-08-06T16:23:07.29
GU.POPM.HHN. ML:2.0 0.0003765 0.38 AML other m 2023-08-06T16:23:07.48
IV.VISG.HHE. ML:1.3 0.0000835 0.64 AML other m 2023-08-06T16:23:07.88
IV.SEI.HHE. ML:2.0 0.00035749999999999996 0.26 AML other m 2023-08-06T16:23:07.64
IV.BDI.HHE. ML:1.5 0.0001 0.28 AML other m 2023-08-06T16:23:09.89
IV.BDI.HHN. ML:1.6 0.0001119 0.5 AML other m 2023-08-06T16:23:09.81
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