Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 25-05-2024 and time 05:47:18 (UTC) in region 4 km E Casalfiumanese (BO)

A magnitude ML 1.5 earthquake occured in region: 4 km E Casalfiumanese (BO), on

  • 25-05-2024 05:47:18 (UTC)
  • 25-05-2024 07:47:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2940, 11.6680 at 22 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
Casalfiumanese BO 4 3438 3438
Riolo Terme RA 5 5720 9158
Borgo Tossignano BO 7 3288 12446
Imola BO 8 69797 82243
Dozza BO 8 6652 88895
Casola Valsenio RA 9 2617 91512
Fontanelice BO 10 1943 93455
Castel Bolognese RA 11 9554 103009
Brisighella RA 11 7639 110648
Castel San Pietro Terme BO 13 20811 131459
Castel Guelfo di Bologna BO 15 4455 135914
Castel del Rio BO 16 1246 137160
Solarolo RA 16 4488 141648
Mordano BO 16 4760 146408
Bagnara di Romagna RA 17 2429 148837
Faenza RA 17 58541 207378
Modigliana FC 18 4560 211938

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SW of Imola (69797 inhabitants)
17 Km W of Faenza (58541 inhabitants)
31 Km W of Forlì (117913 inhabitants)
34 Km SE of Bologna (386663 inhabitants)
45 Km W of Ravenna (159116 inhabitants)
49 Km W of Cesena (96758 inhabitants)
61 Km S of Ferrara (133155 inhabitants)
65 Km NE of Prato (191150 inhabitants)
67 Km NE of Firenze (382808 inhabitants)
71 Km SE of Modena (184973 inhabitants)
71 Km NE of Scandicci (50609 inhabitants)
72 Km NE of Pistoia (90315 inhabitants)
76 Km W of Rimini (147750 inhabitants)
83 Km SE of Carpi (70699 inhabitants)
87 Km S of Rovigo (51867 inhabitants)
94 Km N of Arezzo (99543 inhabitants)
94 Km E of Reggio nell'Emilia (171345 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 1.5 2024-05-25
05:47:18		 44.2942 11.6685 22 2024-05-25
05:57:27		 Sala Sismica INGV-Roma 128139201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-05-25 05:47:18 ± 0.26
Latitude 44.2942 ± 0.0099
Longitude 11.6685 ± 0.0126
Depth (km) 22 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 128139201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 999
Semi-minor axis of confidence ellipse (meter) 595
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45416
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 128139201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-05-25 05:57:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GATE.HHZ. 2024-05-25T05:49:02.46 3.0 undecidable manual Sn 4.2 0
IV.TDS.HHZ. 2024-05-25T05:48:58.77 3.0 undecidable manual Pg 14.71 0
IV.VAGA.HNZ. 2024-05-25T05:48:53.13 3.0 undecidable manual Sn 0.33 0
IV.GATE.HHZ. 2024-05-25T05:48:18.99 3.0 negative manual Pn 4.19 0
IV.LPEL.HHZ. 2024-05-25T05:48:11.64 3.0 undecidable manual Pg 7.24 0
IV.RCAV.EHZ. 2024-05-25T05:48:00.26 3.0 undecidable manual Pn -0.12 0
IV.TRIF.CHZ. 2024-05-25T05:47:59.54 3.0 undecidable manual S -0.85 0
IV.CTI.HHZ. 2024-05-25T05:47:47.57 3.0 undecidable manual Pn -1.88 0
GU.GSCL.HHZ. 2024-05-25T05:47:46.68 3.0 undecidable manual S 0.01 0
IV.TRIF.CHZ. 2024-05-25T05:47:42.28 3.0 negative manual P -0.01 0
IV.PIEI.HHZ. 2024-05-25T05:47:35.42 3.0 undecidable manual P -2.55 0
IV.SFI.EHZ. 2024-05-25T05:47:34.37 0.3 undecidable manual S 162 45.5211 107 0.91 56
IV.CRMI.HHZ. 2024-05-25T05:47:33.02 3.0 negative manual P 0.32 0
IV.VMGN.HHZ. 2024-05-25T05:47:32.05 0.3 undecidable manual S 196 39.2274 111 0.17 72
IV.CRE.HHZ. 2024-05-25T05:47:32.92 3.0 positive manual P 0.27 0
IV.SEI.HHZ. 2024-05-25T05:47:31.72 0.6 undecidable manual S 223 36.2415 113 0.57 44
IV.MPPT.EHZ. 2024-05-25T05:47:29.50 3.0 positive manual P -0.13 0
IV.LMD.HHZ. 2024-05-25T05:47:28.00 0.6 undecidable manual S 173 24.2535 125 -0.32 47
IV.MTRZ.HHZ. 2024-05-25T05:47:28.10 0.6 undecidable manual S 276 19.4694 132 0.78 41
IV.VISG.HHZ. 2024-05-25T05:47:27.44 0.3 undecidable manual S 238 21.9669 128 -0.4 70
IV.MOCL.EHZ. 2024-05-25T05:47:27.98 0.3 undecidable manual P 231 50.4162 105 0.15 70
IV.SFI.EHZ. 2024-05-25T05:47:27.18 0.3 undecidable manual P 162 45.5211 107 0.08 72
IV.BOSL.HHZ. 2024-05-25T05:47:27.30 0.3 undecidable manual P 210 46.62 107 0.03 73
IT.MOG.HNN. 2024-05-25T05:47:26.36 0.3 undecidable manual S 150 15.7731 139 -0.28 72
IV.VMGN.HHZ. 2024-05-25T05:47:26.26 0.3 undecidable manual P 196 39.2274 111 0.07 73
IV.IMOL.EHZ. 2024-05-25T05:47:26.05 0.3 undecidable manual S 39 9.2796 153 0.38 72
IV.SEI.HHZ. 2024-05-25T05:47:25.57 0.3 undecidable manual P 223 36.2415 113 -0.2 71
IT.MRR.HGE. 2024-05-25T05:47:24.39 0.3 undecidable manual P 192 26.0517 122 0.02 76
IV.VISG.HHZ. 2024-05-25T05:47:23.25 0.1 negative manual P 238 21.9669 128 -0.61 88
IV.LMD.HHZ. 2024-05-25T05:47:23.73 0.3 negative manual P 173 24.2535 125 -0.41 70
IV.MTRZ.HHZ. 2024-05-25T05:47:23.86 0.1 negative manual P 276 19.4694 132 0.3 96
IV.IMOL.EHZ. 2024-05-25T05:47:22.40 0.1 negative manual P 39 9.2796 153 -0.2 100
IT.MOG.HNN. 2024-05-25T05:47:22.81 0.3 undecidable manual P 150 15.7731 139 -0.35 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IMOL.HNN. ML:2.4 0.0017 0.22 AML other m 2024-05-25T05:47:26.51
IV.IMOL.HNE. ML:2.2 0.0010459999999999998 0.52 AML other m 2024-05-25T05:47:27.38
IV.VISG.HHE. ML:1.7 0.0002515 0.42 AML other m 2024-05-25T05:47:27.75
IV.VISG.HHN. ML:1.8 0.00033650000000000005 1.88 AML other m 2024-05-25T05:47:29.02
IV.LMD.HHE. ML:1.5 0.000161 1.36 AML other m 2024-05-25T05:47:29.30
IV.LMD.HHN. ML:1.7 0.0002485 0.54 AML other m 2024-05-25T05:47:30.69
IV.MTRZ.HHE. ML:1.9 0.000391 0.78 AML other m 2024-05-25T05:47:30.58
IV.MTRZ.HHN. ML:1.8 0.000382 0.38 AML other m 2024-05-25T05:47:31.28
IV.SEI.HHN. ML:2.2 0.0005189999999999999 0.24 AML other m 2024-05-25T05:47:32.33
IV.VMGN.HHE. ML:1.1 0.00003784999999999999 0.68 AML other m 2024-05-25T05:47:32.24
IV.VMGN.HHN. ML:1.2 0.000047350000000000006 0.72 AML other m 2024-05-25T05:47:33.45
IV.SEI.HHE. ML:1.9 0.0002495 1.06 AML other m 2024-05-25T05:47:33.94
IV.SFI.EHE. ML:1.6 0.0001031 0.24 AML other m 2024-05-25T05:47:34.90
IV.SFI.EHN. ML:1.4 0.000067 0.8 AML other m 2024-05-25T05:47:35.28
IV.BOSL.HHN. ML:0.8 0.00001428 0.3 AML other m 2024-05-25T05:47:36.29
IV.BOSL.HHE. ML:0.6 0.000011099999999999999 1.06 AML other m 2024-05-25T05:47:36.94
IV.MOCL.EHE. ML:1.4 0.00005465000000000001 1.34 AML other m 2024-05-25T05:47:37.81
IV.MOCL.EHN. ML:1.4 0.00006575 1.3 AML other m 2024-05-25T05:47:37.34
IV.MPPT.EHN. ML:1.2 0.000032149999999999995 0.6 AML other m 2024-05-25T05:47:41.91
IV.MPPT.EHE. ML:1.2 0.0000305 0.28 AML other m 2024-05-25T05:47:42.38
IV.CRE.HHN. ML:1.3 0.00003185 1.02 AML other m 2024-05-25T05:47:45.02
IV.CRE.HHE. ML:1.3 0.0000303 1.52 AML other m 2024-05-25T05:47:45.87
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