Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 07-08-2024 and time 01:38:11 (Italy) in region 5 km NE Gaggio Montano (BO)

A magnitude ML 1.8 earthquake occured in region: 5 km NE Gaggio Montano (BO), on

  • 06-08-2024 23:38:11 (UTC)
  • 07-08-2024 01:38:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2320, 10.9760 at 20 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
Gaggio Montano BO 5 4878 4878
Montese MO 5 3353 8231
Castel d'Aiano BO 6 1906 10137
Alto Reno Terme BO 9 6960 17097
Castel di Casio BO 9 3448 20545
Lizzano in Belvedere BO 10 2212 22757
Camugnano BO 11 1885 24642
Vergato BO 12 7639 32281
Zocca MO 13 4719 37000
Grizzana Morandi BO 14 3916 40916
Sambuca Pistoiese PT 14 1626 42542
Fanano MO 15 2989 45531
Sestola MO 16 2508 48039
Pavullo nel Frignano MO 17 17383 65422
Castiglione dei Pepoli BO 17 5648 71070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km N of Pistoia (90315 inhabitants)
40 Km N of Prato (191150 inhabitants)
41 Km SW of Bologna (386663 inhabitants)
46 Km S of Modena (184973 inhabitants)
55 Km NW of Scandicci (50609 inhabitants)
56 Km NW of Firenze (382808 inhabitants)
57 Km NE of Lucca (89046 inhabitants)
59 Km SE of Reggio nell'Emilia (171345 inhabitants)
60 Km W of Imola (69797 inhabitants)
62 Km S of Carpi (70699 inhabitants)
70 Km E of Massa (69479 inhabitants)
71 Km NE of Viareggio (62467 inhabitants)
72 Km E of Carrara (63133 inhabitants)
73 Km W of Faenza (58541 inhabitants)
74 Km NE of Pisa (89158 inhabitants)
82 Km SE of Parma (192836 inhabitants)
84 Km SW of Ferrara (133155 inhabitants)
85 Km W of Forlì (117913 inhabitants)
93 Km NE of Livorno (159219 inhabitants)
93 Km E of La Spezia (93959 inhabitants)
100 Km W of Ravenna (159116 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 1.8 2024-08-06
23:38:11		 44.2323 10.9763 21 2024-08-06
23:43:58		 Sala Sismica INGV-Roma 130465371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-08-06 23:38:11 ± 0.17
Latitude 44.2323 ± 0.0054
Longitude 10.9763 ± 0.0075
Depth (km) 21 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 130465371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 211
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42898
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 130465371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-08-06 23:43:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MAGA.HHZ. 2024-08-06T23:38:38.53 3.0 positive manual Pn -0.04 0
GU.GRAM.HHZ. 2024-08-06T23:38:26.25 3.0 negative manual P 0.16 0
IV.SEI.HHZ. 2024-08-06T23:38:24.73 0.3 undecidable manual S 123 36.2415 111 0.25 71
GU.GSCL.HHE. 2024-08-06T23:38:23.77 0.3 undecidable manual S 293 33.5442 113 -0.02 74
IV.MPPT.EHZ. 2024-08-06T23:38:23.35 0.1 undecidable manual S 163 31.8459 114 -0.03 99
GU.POPM.HHZ. 2024-08-06T23:38:22.22 0.3 undecidable manual S 220 27.1506 119 -0.05 75
MN.VLC.HHZ. 2024-08-06T23:38:21.13 0.1 positive manual P 260 47.619 105 0.32 90
IV.PSL.EHZ. 2024-08-06T23:38:21.69 0.3 undecidable manual S 189 25.0527 121 -0.1 75
GU.CARD.HHZ. 2024-08-06T23:38:20.74 0.6 undecidable manual P 240 45.5211 106 0.24 46
IV.ZCCA.HHZ. 2024-08-06T23:38:19.83 0.3 undecidable manual S 0 13.1757 142 0.44 70
IV.SEI.HHZ. 2024-08-06T23:38:19.18 0.6 negative manual P 123 36.2415 111 0.03 49
IV.VISG.HHZ. 2024-08-06T23:38:19.00 0.3 undecidable manual P 97 36.741 110 -0.22 70
IV.MTRZ.HNE. 2024-08-06T23:38:19.62 1.0 undecidable manual P 76 36.741 110 0.4 23
IV.BDI.HNE. 2024-08-06T23:38:18.89 0.3 undecidable manual P 238 35.6421 111 -0.17 72
IV.MPPT.EHZ. 2024-08-06T23:38:18.41 0.3 undecidable manual P 163 31.8459 114 -0.11 73
GU.GSCL.HHE. 2024-08-06T23:38:18.67 0.3 undecidable manual P 293 33.5442 113 -0.08 73
GU.POPM.HHZ. 2024-08-06T23:38:17.85 0.1 positive manual P 220 27.1506 119 -0.02 100
IV.PSL.EHZ. 2024-08-06T23:38:17.55 0.3 positive manual P 189 25.0527 121 -0.05 75
IV.ZCCA.HHZ. 2024-08-06T23:38:15.73 0.1 positive manual P 0 13.1757 142 -0.48 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ZCCA.HNN. ML:2.3 0.0012055 0.38 AML other m 2024-08-06T23:38:20.10
IV.ZCCA.HHN. ML:2.3 0.0012684999999999999 0.38 AML other m 2024-08-06T23:38:20.10
IV.ZCCA.HHE. ML:2.1 0.0008975 0.34 AML other m 2024-08-06T23:38:20.32
IV.ZCCA.HNE. ML:2.1 0.000922 0.34 AML other m 2024-08-06T23:38:20.32
GU.POPM.HHN. ML:1.9 0.00038700000000000003 0.32 AML other m 2024-08-06T23:38:22.41
GU.POPM.HHE. ML:2.0 0.0003915 0.18 AML other m 2024-08-06T23:38:22.68
IV.MPPT.EHN. ML:1.3 0.00007105 0.4 AML other m 2024-08-06T23:38:24.06
IV.MPPT.EHE. ML:1.3 0.0000733 1.4 AML other m 2024-08-06T23:38:24.78
IV.SEI.HHE. ML:1.4 0.0000958 0.42 AML other m 2024-08-06T23:38:25.46
IV.VISG.HHN. ML:1.0 0.000028250000000000002 0.32 AML other m 2024-08-06T23:38:26.36
IV.VISG.HHE. ML:1.0 0.0000362 0.32 AML other m 2024-08-06T23:38:26.21
MN.VLC.HHE. ML:1.7 0.0001225 0.24 AML other m 2024-08-06T23:38:28.46
IV.SEI.HHN. ML:1.7 0.00016749999999999998 0.56 AML other m 2024-08-06T23:38:28.36
MN.VLC.HHN. ML:2.0 0.00022700000000000002 0.46 AML other m 2024-08-06T23:38:28.47
GU.GRAM.HHN. ML:1.6 0.00004965 0.3 AML other m 2024-08-06T23:38:39.14
GU.GRAM.HHE. ML:1.8 0.00007805000000000001 0.32 AML other m 2024-08-06T23:38:39.18
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