Earthquake with magnitude of ML 1.3 on date 31-01-2024 and time 23:03:25 (UTC) in region 3 km E Casalfiumanese (BO)

A magnitude ML 1.3 earthquake occured in region: 3 km E Casalfiumanese (BO), on

  • 31-01-2024 23:03:25 (UTC)
  • 01-02-2024 00:03:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2860, 11.6490 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.

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 3 3438 3438
Borgo Tossignano BO 5 3288 6726
Riolo Terme RA 6 5720 12446
Casola Valsenio RA 7 2617 15063
Fontanelice BO 8 1943 17006
Dozza BO 8 6652 23658
Imola BO 9 69797 93455
Brisighella RA 12 7639 101094
Castel Bolognese RA 13 9554 110648
Castel San Pietro Terme BO 13 20811 131459
Castel del Rio BO 14 1246 132705
Castel Guelfo di Bologna BO 17 4455 137160
Solarolo RA 18 4488 141648
Mordano BO 18 4760 146408
Bagnara di Romagna RA 18 2429 148837
Modigliana FC 18 4560 153397
Faenza RA 19 58541 211938
Monterenzio BO 20 6035 217973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SW of Imola (69797 inhabitants)
19 Km W of Faenza (58541 inhabitants)
32 Km W of Forlì (117913 inhabitants)
34 Km SE of Bologna (386663 inhabitants)
46 Km W of Ravenna (159116 inhabitants)
50 Km W of Cesena (96758 inhabitants)
61 Km S of Ferrara (133155 inhabitants)
63 Km NE of Prato (191150 inhabitants)
65 Km NE of Firenze (382808 inhabitants)
70 Km NE of Scandicci (50609 inhabitants)
70 Km SE of Modena (184973 inhabitants)
70 Km NE of Pistoia (90315 inhabitants)
77 Km W of Rimini (147750 inhabitants)
82 Km SE of Carpi (70699 inhabitants)
88 Km S of Rovigo (51867 inhabitants)
93 Km E of Reggio nell'Emilia (171345 inhabitants)
93 Km N of Arezzo (99543 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 1.3 2024-01-31
23:03:25
44.2862 11.6487 10 2024-01-31
23:10:25
Sala Sismica INGV-Roma 124971841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-31 23:03:25 ± 0.22
Latitude 44.2862 ± 0.0117
Longitude 11.6487 ± 0.0151
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124971841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1350
Semi-minor axis of confidence ellipse (meter) 1120
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 334
Circular confidence region, given by single value of horizontal uncertainty (meter) 1350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.76532
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 124971841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-31 23:10:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2024-01-31T23:03:49.83 0.3 undecidable manual S 162 77.8665 50 0.94 55
IV.RUFI.EHZ. 2024-01-31T23:03:42.03 0.3 undecidable manual S 193 50.9157 50 0.33 71
IV.RINC.EHZ. 2024-01-31T23:03:40.53 0.6 undecidable manual S 184 44.4222 50 0.56 45
IV.SFI.EHZ. 2024-01-31T23:03:39.77 0.6 undecidable manual S 159 45.1215 50 -0.38 48
IV.CRE.HHZ. 2024-01-31T23:03:39.01 1.0 positive manual P 162 77.8665 50 0.03 24
IV.PARC.HHZ. 2024-01-31T23:03:39.74 0.1 undecidable manual P 146 84.9483 50 -0.33 89
IV.VMGN.HHZ. 2024-01-31T23:03:38.48 0.3 undecidable manual S 194 37.9287 50 0.25 74
IV.SEI.HHZ. 2024-01-31T23:03:37.65 0.6 undecidable manual S 222 34.5432 50 0.32 49
IV.RUFI.EHZ. 2024-01-31T23:03:34.41 0.1 undecidable manual P 193 50.9157 50 -0.42 93
IV.LMD.HHZ. 2024-01-31T23:03:34.57 0.6 undecidable manual S 169 23.6541 113 0.2 51
IV.RINC.EHZ. 2024-01-31T23:03:33.54 0.1 undecidable manual P 184 44.4222 50 -0.29 97
IV.VISG.HHZ. 2024-01-31T23:03:33.65 0.6 undecidable manual S 238 20.1687 117 0.37 50
IV.SFI.EHZ. 2024-01-31T23:03:33.38 1.0 positive manual P 159 45.1215 50 -0.56 23
IV.SEI.HHZ. 2024-01-31T23:03:32.07 0.6 positive manual P 222 34.5432 50 -0.24 50
IV.VMGN.HHZ. 2024-01-31T23:03:32.62 0.1 undecidable manual P 194 37.9287 50 -0.21 100
IV.LMD.HHZ. 2024-01-31T23:03:30.22 0.1 positive manual P 169 23.6541 113 -0.38 99
IV.IMOL.EHZ. 2024-01-31T23:03:29.05 0.1 undecidable manual P 42 10.9779 133 0.6 95
IV.VISG.HHZ. 2024-01-31T23:03:29.60 0.6 undecidable manual P 238 20.1687 117 -0.37 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.3 0.0001535 0.08 AML other m 2024-01-31T23:03:34.42
IV.LMD.HHE. ML:1.3 0.00013140000000000002 1.72 AML other m 2024-01-31T23:03:34.00
IV.LMD.HHN. ML:1.3 0.00011625 0.94 AML other m 2024-01-31T23:03:35.74
IV.VISG.HHN. ML:1.2 0.00012545 0.6 AML other m 2024-01-31T23:03:35.30
IV.SEI.HHE. ML:1.8 0.00027350000000000003 1.58 AML other m 2024-01-31T23:03:38.81
IV.VMGN.HHE. ML:1.0 0.000035449999999999994 1.34 AML other m 2024-01-31T23:03:39.08
IV.SEI.HHN. ML:1.9 0.000356 0.8 AML other m 2024-01-31T23:03:39.94
IV.VMGN.HHN. ML:1.0 0.00004105 1.48 AML other m 2024-01-31T23:03:40.83
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download