Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 08-03-2024 and time 12:10:14 (Italy) in region 2 km N Marradi (FI)

A magnitude ML 1.0 earthquake occured in region: 2 km N Marradi (FI), on

  • 08-03-2024 11:10:14 (UTC)
  • 08-03-2024 12:10:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0980, 11.6170 at 11 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
Marradi FI 2 3139 3139
Palazzuolo sul Senio FI 6 1154 4293
Tredozio FC 10 1212 5505
Casola Valsenio RA 14 2617 8122
Portico e San Benedetto FC 15 756 8878
Modigliana FC 16 4560 13438
Castel del Rio BO 16 1246 14684
Fontanelice BO 18 1943 16627
Brisighella RA 18 7639 24266
Rocca San Casciano FC 19 1910 26176
Premilcuore FC 19 799 26975
San Godenzo FI 19 1167 28142
Firenzuola FI 19 4726 32868

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km S of Imola (69797 inhabitants)
30 Km SW of Faenza (58541 inhabitants)
37 Km W of Forlì (117913 inhabitants)
47 Km NE of Firenze (382808 inhabitants)
48 Km NE of Prato (191150 inhabitants)
49 Km SE of Bologna (386663 inhabitants)
50 Km W of Cesena (96758 inhabitants)
51 Km NE of Scandicci (50609 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
59 Km E of Pistoia (90315 inhabitants)
73 Km NW of Arezzo (99543 inhabitants)
76 Km W of Rimini (147750 inhabitants)
82 Km SE of Modena (184973 inhabitants)
82 Km S of Ferrara (133155 inhabitants)
90 Km N of Siena (53903 inhabitants)
94 Km E of Lucca (89046 inhabitants)
96 Km SE of Carpi (70699 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 1.0 2024-03-08
11:10:14		 44.0983 11.6168 11 2024-03-08
11:17:20		 Sala Sismica INGV-Roma 125770661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-08 11:10:14 ± 0.21
Latitude 44.0983 ± 0.0099
Longitude 11.6168 ± 0.0100
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125770661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1042
Semi-minor axis of confidence ellipse (meter) 411
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.25451
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 125770661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-08 11:17:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2024-03-08T11:10:22.81 0.3 undecidable manual S 257 21.1677 117 0.39 70
IV.VISG.HHZ. 2024-03-08T11:10:21.41 0.3 undecidable manual S 305 17.6712 121 0.05 76
IV.VMGN.HHZ. 2024-03-08T11:10:21.57 0.3 undecidable manual S 203 17.2716 121 0.32 72
IV.SFI.HNZ. 2024-03-08T11:10:20.09 0.1 undecidable manual P 139 28.2495 50 0.03 100
IV.LMD.HHZ. 2024-03-08T11:10:18.58 0.3 undecidable manual S 108 7.5813 144 -0.15 76
IV.SEI.HHZ. 2024-03-08T11:10:18.67 0.1 undecidable manual P 257 21.1677 117 -0.28 96
IT.MOG.HNN. 2024-03-08T11:10:18.47 0.1 undecidable manual P 56 14.3745 126 0.68 87
IV.VISG.HHZ. 2024-03-08T11:10:18.05 0.1 undecidable manual P 305 17.6712 121 -0.29 97
IV.VMGN.HHZ. 2024-03-08T11:10:18.13 0.1 undecidable manual P 203 17.2716 121 -0.15 99
IV.LMD.HHZ. 2024-03-08T11:10:16.46 0.1 positive manual P 108 7.5813 144 -0.36 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.2 0.0002395 1.24 AML other m 2024-03-08T11:10:19.09
IV.LMD.HHE. ML:1.4 0.0003165 1.7 AML other m 2024-03-08T11:10:19.04
IV.VMGN.HHE. ML:0.6 0.000036152415 0.38 AML other m 2024-03-08T11:10:22.87
IV.VISG.HHE. ML:0.7 0.000038350000000000004 0.28 AML other m 2024-03-08T11:10:22.61
IV.VMGN.HHN. ML:0.7 0.00003755 1.76 AML other m 2024-03-08T11:10:22.11
IV.VISG.HHN. ML:0.7 0.0000465 0.42 AML other m 2024-03-08T11:10:23.57
IV.SEI.HHE. ML:1.3 0.000129 1.6 AML other m 2024-03-08T11:10:24.16
IV.SEI.HHN. ML:1.4 0.000184 1.48 AML other m 2024-03-08T11:10:26.74
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