Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 09-03-2024 and time 08:46:02 (Italy) in region 5 km W Casola Valsenio (RA)

A magnitude ML 1.2 earthquake occured in region: 5 km W Casola Valsenio (RA), on

  • 09-03-2024 07:46:02 (UTC)
  • 09-03-2024 08:46:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2120, 11.5690 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.

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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
Casola Valsenio RA 5 2617 2617
Castel del Rio BO 5 1246 3863
Fontanelice BO 5 1943 5806
Borgo Tossignano BO 8 3288 9094
Casalfiumanese BO 10 3438 12532
Palazzuolo sul Senio FI 11 1154 13686
Riolo Terme RA 14 5720 19406
Marradi FI 16 3139 22545
Brisighella RA 16 7639 30184
Dozza BO 17 6652 36836
Monterenzio BO 18 6035 42871
Firenzuola FI 18 4726 47597
Modigliana FC 19 4560 52157
Imola BO 20 69797 121954

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SW of Imola (69797 inhabitants)
26 Km W of Faenza (58541 inhabitants)
36 Km SE of Bologna (386663 inhabitants)
38 Km W of Forlì (117913 inhabitants)
53 Km NE of Prato (191150 inhabitants)
54 Km W of Cesena (96758 inhabitants)
55 Km NE of Firenze (382808 inhabitants)
55 Km W of Ravenna (159116 inhabitants)
59 Km NE of Scandicci (50609 inhabitants)
61 Km NE of Pistoia (90315 inhabitants)
70 Km S of Ferrara (133155 inhabitants)
70 Km SE of Modena (184973 inhabitants)
81 Km W of Rimini (147750 inhabitants)
84 Km SE of Carpi (70699 inhabitants)
87 Km NW of Arezzo (99543 inhabitants)
92 Km SE of Reggio nell'Emilia (171345 inhabitants)
95 Km E of Lucca (89046 inhabitants)
97 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 1.2 2024-03-09
07:46:02		 44.2117 11.5693 24 2024-03-09
08:03:33		 Sala Sismica INGV-Roma 125783851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-09 07:46:02 ± 0.27
Latitude 44.2117 ± 0.0126
Longitude 11.5693 ± 0.0176
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125783851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1363
Semi-minor axis of confidence ellipse (meter) 1058
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 190
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.36602
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 125783851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-09 08:03:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.MOG.HNE. 2024-03-09T07:46:35.38 0.3 undecidable manual S 16.3725 2.385 0
IT.MOG.HNE. 2024-03-09T07:46:24.98 3.0 undecidable manual P 16.3725 1.715 0
IV.SFI.EHZ. 2024-03-09T07:46:17.31 0.3 undecidable manual S 147 40.626 113 0.52 67
IV.VMGN.HHZ. 2024-03-09T07:46:14.14 0.3 undecidable manual S 186 28.6491 123 0.16 74
IV.SEI.HHZ. 2024-03-09T07:46:13.28 0.3 undecidable manual S 224 24.2535 129 0.26 73
IV.LMD.HHZ. 2024-03-09T07:46:11.86 0.3 undecidable manual S 144 18.4704 137 -0.05 76
IV.VISG.HHN. 2024-03-09T07:46:10.68 0.3 undecidable manual S 257 11.0778 152 -0.07 77
IV.SFI.EHZ. 2024-03-09T07:46:10.78 0.1 undecidable manual P 147 40.626 113 -0.09 98
IV.FNVD.HHZ. 2024-03-09T07:46:10.24 0.6 negative manual P 262 35.8419 117 0.04 50
IV.VMGN.HHZ. 2024-03-09T07:46:09.10 0.1 undecidable manual P 186 28.6491 123 -0.15 99
IV.MTRZ.HHN. 2024-03-09T07:46:08.49 0.1 undecidable manual P 314 16.0728 142 0.69 87
IV.SEI.HHZ. 2024-03-09T07:46:08.54 0.1 undecidable manual P 224 24.2535 129 -0.15 100
IV.LMD.HHZ. 2024-03-09T07:46:07.84 0.3 negative manual P 144 18.4704 137 -0.21 75
IV.VISG.HHN. 2024-03-09T07:46:07.06 0.1 undecidable manual P 257 11.0778 152 -0.32 98
IT.MRR.HGZ. 2024-03-09T07:46:07.56 0.1 undecidable manual P 171 16.5723 141 -0.29 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.4 0.0001295 0.76 AML other m 2024-03-09T07:46:12.03
IV.LMD.HHN. ML:1.5 0.000163 0.72 AML other m 2024-03-09T07:46:12.10
IV.VMGN.HHE. ML:1.0 0.0000333 0.94 AML other m 2024-03-09T07:46:14.36
IV.VMGN.HHN. ML:1.0 0.00003465 1.16 AML other m 2024-03-09T07:46:15.60
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