Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 24-03-2024 and time 19:40:06 (UTC) in region 5 km S Castel del Rio (BO)

A magnitude ML 1.1 earthquake occured in region: 5 km S Castel del Rio (BO), on

  • 24-03-2024 19:40:06 (UTC)
  • 24-03-2024 20:40:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1670, 11.4890 at 10 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
Castel del Rio BO 5 1246 1246
Palazzuolo sul Senio FI 8 1154 2400
Firenzuola FI 10 4726 7126
Fontanelice BO 12 1943 9069
Casola Valsenio RA 13 2617 11686
Marradi FI 14 3139 14825
Borgo Tossignano BO 15 3288 18113
Monghidoro BO 15 3749 21862
Loiano BO 18 4294 26156
Casalfiumanese BO 18 3438 29594
Monterenzio BO 19 6035 35629

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Imola (69797 inhabitants)
34 Km W of Faenza (58541 inhabitants)
38 Km SE of Bologna (386663 inhabitants)
45 Km W of Forlì (117913 inhabitants)
45 Km NE of Prato (191150 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
52 Km NE of Scandicci (50609 inhabitants)
52 Km E of Pistoia (90315 inhabitants)
60 Km W of Cesena (96758 inhabitants)
63 Km W of Ravenna (159116 inhabitants)
70 Km SE of Modena (184973 inhabitants)
75 Km S of Ferrara (133155 inhabitants)
84 Km SE of Carpi (70699 inhabitants)
84 Km NW of Arezzo (99543 inhabitants)
87 Km E of Lucca (89046 inhabitants)
87 Km W of Rimini (147750 inhabitants)
90 Km SE of Reggio nell'Emilia (171345 inhabitants)
95 Km N of Siena (53903 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 1.1 2024-03-24
19:40:06		 44.1667 11.4893 10 2024-03-24
19:51:45		 Sala Sismica INGV-Roma 126134711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-24 19:40:06 ± 0.12
Latitude 44.1667 ± 0.0045
Longitude 11.4893 ± 0.0100
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126134711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 773
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.27429
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.6
Num. used stations 4
Type of magnitude ML
Reference to an origin 126134711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-24 19:51:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2024-03-24T19:40:17.33 0.3 undecidable manual S 234 30.4473 50 0.03 72
IV.BOSL.HHZ. 2024-03-24T19:40:16.61 0.6 undecidable manual S 199 27.75 50 0.04 48
IV.VMGN.HHZ. 2024-03-24T19:40:15.42 0.3 undecidable manual S 172 23.754 112 0.09 72
IV.SEI.HHZ. 2024-03-24T19:40:13.16 0.3 undecidable manual S 220 16.2726 121 0.17 71
IV.BOSL.HHZ. 2024-03-24T19:40:12.24 0.1 undecidable manual P 199 27.75 50 -0.04 96
IV.MOCL.EHZ. 2024-03-24T19:40:12.55 0.3 undecidable manual P 234 30.4473 50 -0.15 70
IV.FNVD.HHZ. 2024-03-24T19:40:12.45 0.3 negative manual P 270 29.1486 50 -0.05 72
IV.VMGN.HHZ. 2024-03-24T19:40:11.44 0.3 undecidable manual P 172 23.754 112 -0.12 71
IV.SEI.HHZ. 2024-03-24T19:40:10.26 0.1 positive manual P 220 16.2726 121 0.05 98
IV.LMD.HHZ. 2024-03-24T19:40:10.76 1.0 negative manual P 120 19.9689 116 -0.11 24
IV.MTRZ.HHZ. 2024-03-24T19:40:10.97 0.6 positive manual P 342 16.9719 120 0.63 42
IV.VISG.HHZ. 2024-03-24T19:40:09.92 0.3 undecidable manual S 299 4.995 153 -0.28 71
IV.VISG.HHZ. 2024-03-24T19:40:08.58 0.1 undecidable manual P 299 4.995 153 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:0.0 0.000653 0.16 AML other m 2024-03-24T19:40:10.06
IV.VISG.HHN. ML:0.0 0.001195 0.12 AML other m 2024-03-24T19:40:10.16
IV.VMGN.HHE. ML:0.4 0.00001476525 1.32 AML other m 2024-03-24T19:40:16.16
IV.VMGN.HHN. ML:0.8 0.000033376225 2.18 AML other m 2024-03-24T19:40:15.00
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