Earthquake with magnitude of ML 0.9 on date 28-02-2024 and time 08:25:46 (UTC) in region 1 km N Marradi (FI)

A magnitude ML 0.9 earthquake occured in region: 1 km N Marradi (FI), on

  • 28-02-2024 08:25:46 (UTC)
  • 28-02-2024 09:25:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0860, 11.6120 at 7 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
Marradi FI 1 3139 3139
Palazzuolo sul Senio FI 6 1154 4293
Tredozio FC 11 1212 5505
Portico e San Benedetto FC 15 756 6261
Casola Valsenio RA 15 2617 8878
Modigliana FC 17 4560 13438
Castel del Rio BO 17 1246 14684
San Godenzo FI 18 1167 15851
Premilcuore FC 18 799 16650
Rocca San Casciano FC 19 1910 18560
Firenzuola FI 19 4726 23286
Fontanelice BO 20 1943 25229
Brisighella RA 20 7639 32868

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km S of Imola (69797 inhabitants)
31 Km SW of Faenza (58541 inhabitants)
38 Km W of Forlì (117913 inhabitants)
45 Km NE of Firenze (382808 inhabitants)
47 Km E of Prato (191150 inhabitants)
50 Km NE of Scandicci (50609 inhabitants)
50 Km SE of Bologna (386663 inhabitants)
51 Km W of Cesena (96758 inhabitants)
58 Km E of Pistoia (90315 inhabitants)
60 Km SW of Ravenna (159116 inhabitants)
72 Km NW of Arezzo (99543 inhabitants)
76 Km W of Rimini (147750 inhabitants)
83 Km SE of Modena (184973 inhabitants)
83 Km S of Ferrara (133155 inhabitants)
88 Km N of Siena (53903 inhabitants)
93 Km E of Lucca (89046 inhabitants)
97 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 0.9 2024-02-28
08:25:46
44.0865 11.6123 7 2024-02-28
08:31:17
Sala Sismica INGV-Roma 125588591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-28 08:25:46 ± 0.12
Latitude 44.0865 ± 0.0036
Longitude 11.6123 ± 0.0050
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125588591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 116
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 169
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.25900
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:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 125588591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-28 08:31:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2024-02-28T08:25:56.26 0.3 undecidable manual S 137 27.5502 104 0.04 72
IV.RUFI.EHE. 2024-02-28T08:25:56.66 0.3 undecidable manual S 197 28.749 103 0.02 72
IV.RINC.EHZ. 2024-02-28T08:25:54.81 0.3 undecidable manual S 181 22.1556 107 0.37 68
IV.SEI.HHZ. 2024-02-28T08:25:54.02 0.3 undecidable manual S 260 20.5683 108 0.13 72
IV.VISG.HHZ. 2024-02-28T08:25:53.36 0.3 undecidable manual S 309 18.1707 110 0.25 70
IT.MOG.HNZ. 2024-02-28T08:25:52.66 0.3 undecidable manual S 53 15.4734 113 0.43 68
IV.VMGN.HHZ. 2024-02-28T08:25:52.89 0.3 undecidable manual S 203 15.9729 113 0.49 67
IV.BOSL.HHZ. 2024-02-28T08:25:51.74 0.1 undecidable manual P 228 25.6521 105 0.03 97
IV.RUFI.EHE. 2024-02-28T08:25:51.96 0.1 undecidable manual P 197 28.749 103 -0.35 90
IV.RINC.EHZ. 2024-02-28T08:25:51.07 0.1 undecidable manual P 181 22.1556 107 0.03 97
IV.SFI.EHZ. 2024-02-28T08:25:51.80 0.1 undecidable manual P 137 27.5502 104 -0.27 92
IV.VMGN.HHZ. 2024-02-28T08:25:50.08 0.6 undecidable manual P 203 15.9729 113 0.22 47
IV.VISG.HHZ. 2024-02-28T08:25:50.17 0.1 undecidable manual P 309 18.1707 110 -0.1 96
IV.SEI.HHZ. 2024-02-28T08:25:50.45 0.1 undecidable manual P 260 20.5683 108 -0.27 93
IV.LMD.HHZ. 2024-02-28T08:25:49.93 0.1 undecidable manual S 97 7.5813 131 0.01 100
IT.MOG.HNZ. 2024-02-28T08:25:49.81 0.3 undecidable manual P 53 15.4734 113 0.05 74
IV.LMD.HHZ. 2024-02-28T08:25:48.32 0.1 undecidable manual P 97 7.5813 131 -0.11 98
IT.MRR.HGE. 2024-02-28T08:25:48.65 0.1 undecidable manual S 196 2.5974 159 -0.23 97
IT.MRR.HGE. 2024-02-28T08:25:47.69 0.1 undecidable manual P 196 2.5974 159 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:0.7 0.00010159999999999999 0.88 AML other m 2024-02-28T08:25:50.48
IV.LMD.HHE. ML:0.6 0.00008005000000000001 0.6 AML other m 2024-02-28T08:25:50.71
IV.SEI.HHE. ML:1.0 0.00008675 0.4 AML other m 2024-02-28T08:25:54.43
IV.SEI.HHN. ML:1.3 0.00014355000000000002 1.54 AML other m 2024-02-28T08:25:56.98
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