Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-02-2024 and time 18:45:50 (UTC) in region 4 km W Castel del Rio (BO)

A magnitude ML 1.6 earthquake occured in region: 4 km W Castel del Rio (BO), on

  • 28-02-2024 18:45:50 (UTC)
  • 28-02-2024 19:45:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2080, 11.4590 at 24 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 1246 1246
Fontanelice BO 10 1943 3189
Monghidoro BO 11 3749 6938
Firenzuola FI 12 4726 11664
Palazzuolo sul Senio FI 13 1154 12818
Loiano BO 13 4294 17112
Borgo Tossignano BO 13 3288 20400
Casola Valsenio RA 13 2617 23017
Monterenzio BO 14 6035 29052
Casalfiumanese BO 16 3438 32490
Monzuno BO 17 6328 38818
San Benedetto Val di Sambro BO 18 4315 43133
Marradi FI 19 3139 46272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SW of Imola (69797 inhabitants)
33 Km S of Bologna (386663 inhabitants)
35 Km W of Faenza (58541 inhabitants)
46 Km NE of Prato (191150 inhabitants)
47 Km W of Forlì (117913 inhabitants)
51 Km NE of Firenze (382808 inhabitants)
53 Km NE of Pistoia (90315 inhabitants)
55 Km NE of Scandicci (50609 inhabitants)
63 Km W of Cesena (96758 inhabitants)
63 Km W of Ravenna (159116 inhabitants)
65 Km SE of Modena (184973 inhabitants)
71 Km S of Ferrara (133155 inhabitants)
79 Km SE of Carpi (70699 inhabitants)
85 Km SE of Reggio nell'Emilia (171345 inhabitants)
86 Km E of Lucca (89046 inhabitants)
89 Km NW of Arezzo (99543 inhabitants)
90 Km W of Rimini (147750 inhabitants)
99 Km N of Siena (53903 inhabitants)
100 Km S of Rovigo (51867 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 1.6 2024-02-28
18:45:50		 44.2077 11.459 24 2024-02-28
18:52:28		 Sala Sismica INGV-Roma 125601821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-28 18:45:50 ± 0.49
Latitude 44.2077 ± 0.0189
Longitude 11.4590 ± 0.0263
Depth (km) 24 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125601821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2255
Semi-minor axis of confidence ellipse (meter) 509
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 136
Circular confidence region, given by single value of horizontal uncertainty (meter) 2260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
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) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.28329
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:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 125601821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-28 18:52:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.MOG.HNZ. 2024-02-28T18:46:01.38 0.3 undecidable manual S 100 24.8529 127 0.29 93
IV.LMD.HHZ. 2024-02-28T18:46:01.06 0.3 undecidable manual S 126 24.4533 128 0.04 98
IV.MTRZ.HHZ. 2024-02-28T18:46:00.07 0.6 undecidable manual S 347 11.9769 150 1.28 44
IV.SEI.HHZ. 2024-02-28T18:46:00.24 0.3 undecidable manual S 205 18.7701 136 0.35 94
IV.VISG.HHZ. 2024-02-28T18:45:57.41 0.3 undecidable manual S 223 2.8971 172 -0.58 90
IV.BOSL.HHZ. 2024-02-28T18:45:57.85 0.3 undecidable manual P 192 31.4463 120 0.27 93
IV.VMGN.HHZ. 2024-02-28T18:45:57.28 0.3 undecidable manual P 168 28.6491 123 0.06 98
IV.LMD.HHZ. 2024-02-28T18:45:56.22 0.3 undecidable manual P 126 24.4533 128 -0.47 91
IT.MOG.HNZ. 2024-02-28T18:45:56.32 0.3 undecidable manual P 100 24.8529 127 -0.41 92
IT.MRR.HGZ. 2024-02-28T18:45:56.53 0.3 undecidable manual P 144 19.6692 135 0.4 92
IV.MTRZ.HHZ. 2024-02-28T18:45:55.52 0.3 undecidable manual P 347 11.9769 150 0.12 100
IV.SEI.HHZ. 2024-02-28T18:45:55.89 0.3 undecidable manual P 205 18.7701 136 -0.15 97
IV.VISG.HHZ. 2024-02-28T18:45:54.29 0.3 undecidable manual P 223 2.8971 172 -0.65 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.3 0.000136 0.72 AML other m 2024-02-28T18:45:57.50
IV.VISG.HHN. ML:1.4 0.00019350000000000001 0.46 AML other m 2024-02-28T18:45:57.61
IV.MTRZ.HHE. ML:2.0 0.000622 0.3 AML other m 2024-02-28T18:46:00.40
IV.MTRZ.HNE. ML:2.0 0.0006445000000000001 0.28 AML other m 2024-02-28T18:46:00.40
IV.MTRZ.HHN. ML:1.9 0.0004485 0.58 AML other m 2024-02-28T18:46:00.35
IV.SEI.HHE. ML:1.6 0.0001975 1.36 AML other m 2024-02-28T18:46:00.74
IV.SEI.HHN. ML:1.6 0.00020600000000000002 1.42 AML other m 2024-02-28T18:46:00.98
IV.MTRZ.HNN. ML:1.9 0.00045799999999999997 0.44 AML other m 2024-02-28T18:46:01.36
IV.LMD.HHE. ML:1.2 0.00007575 0.14 AML other m 2024-02-28T18:46:01.21
IV.LMD.HHN. ML:1.4 0.0001066 0.14 AML other m 2024-02-28T18:46:01.30
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