Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 16-09-2024 and time 18:27:42 (UTC) in region 4 km N Palazzuolo sul Senio (FI)

A magnitude ML 1.6 earthquake occured in region: 4 km N Palazzuolo sul Senio (FI), on

  • 16-09-2024 18:27:42 (UTC)
  • 16-09-2024 20:27:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1500, 11.5620 at 9 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
Palazzuolo sul Senio FI 4 1154 1154
Castel del Rio BO 9 1246 2400
Marradi FI 9 3139 5539
Casola Valsenio RA 10 2617 8156
Fontanelice BO 12 1943 10099
Borgo Tossignano BO 15 3288 13387
Firenzuola FI 15 4726 18113
Tredozio FC 17 1212 19325
Casalfiumanese BO 17 3438 22763
Brisighella RA 18 7639 30402
Modigliana FC 19 4560 34962
Riolo Terme RA 19 5720 40682

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SW of Imola (69797 inhabitants)
30 Km SW of Faenza (58541 inhabitants)
39 Km W of Forlì (117913 inhabitants)
42 Km SE of Bologna (386663 inhabitants)
48 Km NE of Prato (191150 inhabitants)
49 Km NE of Firenze (382808 inhabitants)
53 Km NE of Scandicci (50609 inhabitants)
54 Km W of Cesena (96758 inhabitants)
57 Km E of Pistoia (90315 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
80 Km NW of Arezzo (99543 inhabitants)
81 Km W of Rimini (147750 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
91 Km E of Lucca (89046 inhabitants)
94 Km N of Siena (53903 inhabitants)
96 Km SE 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 1.6 2024-09-16
18:27:42		 44.1497 11.5623 9 2024-09-16
18:35:07		 Sala Sismica INGV-Roma 131500761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-09-16 18:27:42 ± 0.09
Latitude 44.1497 ± 0.0045
Longitude 11.5623 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 131500761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 536
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31386
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 131500761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-09-16 18:35:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2024-09-16T18:27:54.92 3.0 undecidable manual P -0.5 0
IV.RINC.EHZ. 2024-09-16T18:27:53.41 0.6 undecidable manual S 173 29.4483 50 -0.02 49
IV.BOSL.HHZ. 2024-09-16T18:27:53.38 0.3 undecidable manual S 212 28.5492 108 0.21 70
IV.VMGN.HHZ. 2024-09-16T18:27:51.22 0.3 undecidable manual S 186 21.7671 113 0.23 73
IV.MPPT.EHZ. 2024-09-16T18:27:51.03 3.0 undecidable manual P -0.29 0
IV.SEI.HHZ. 2024-09-16T18:27:50.60 0.6 undecidable manual S 237 19.3695 116 0.38 47
IV.RUFI.EHZ. 2024-09-16T18:27:49.44 0.3 undecidable manual P 187 34.8429 50 -0.31 71
IV.BOSL.HHZ. 2024-09-16T18:27:48.69 0.1 undecidable manual P 212 28.5492 108 -0.08 100
IV.LMD.HHZ. 2024-09-16T18:27:48.68 0.3 undecidable manual S 125 14.0748 124 0.06 76
IV.IMOL.EHZ. 2024-09-16T18:27:48.91 0.3 undecidable manual P 32 27.3504 109 0.37 69
IV.RINC.EHZ. 2024-09-16T18:27:48.81 0.1 undecidable manual P 173 29.4483 50 -0.1 99
IV.VISG.HHZ. 2024-09-16T18:27:47.47 0.6 undecidable manual S 293 11.0778 130 -0.33 48
IV.VMGN.HHZ. 2024-09-16T18:27:47.53 0.3 undecidable manual P 186 21.7671 113 0.03 76
IV.MTRZ.HHZ. 2024-09-16T18:27:47.72 0.3 undecidable manual P 329 21.1677 114 0.33 71
IV.LMD.HHZ. 2024-09-16T18:27:46.00 0.1 undecidable manual P 125 14.0748 124 -0.14 99
IV.SEI.HHZ. 2024-09-16T18:27:46.97 0.3 undecidable manual P 237 19.3695 116 -0.1 75
IV.VISG.HHZ. 2024-09-16T18:27:45.48 0.1 positive manual P 293 11.0778 130 -0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:0.0 0.00045900000000000004 0.14 AML other m 2024-09-16T18:27:47.56
IV.VISG.HHE. ML:0.0 0.0002845 0.24 AML other m 2024-09-16T18:27:48.34
IV.LMD.HHN. ML:1.7 0.0005344999999999999 1.48 AML other m 2024-09-16T18:27:48.12
IV.LMD.HHE. ML:1.8 0.0006765 0.1 AML other m 2024-09-16T18:27:48.87
IV.SEI.HHN. ML:0.0 0.00157 0.18 AML other m 2024-09-16T18:27:50.99
IV.VMGN.HHE. ML:1.3 0.00014250000000000002 0.5 AML other m 2024-09-16T18:27:51.59
IV.SEI.HHE. ML:0.0 0.000603 0.22 AML other m 2024-09-16T18:27:52.20
IV.VMGN.HHN. ML:1.3 0.00013800000000000002 1.74 AML other m 2024-09-16T18:27:52.08
IV.BOSL.HHN. ML:0.0 0.00003990000000000001 0.32 AML other m 2024-09-16T18:27:54.00
IV.BOSL.HHE. ML:0.0 0.00004295 1.42 AML other m 2024-09-16T18:27:54.03
IV.MTRZ.HHE. ML:0.0 0.0006625000000000001 1.5 AML other m 2024-09-16T18:27:54.11
IV.MTRZ.HNE. ML:0.0 0.0006964999999999999 1.48 AML other m 2024-09-16T18:27:54.12
IV.MTRZ.HNN. ML:0.0 0.0007065 0.32 AML other m 2024-09-16T18:27:54.13
IV.MTRZ.HHN. ML:0.0 0.0007515000000000001 0.32 AML other m 2024-09-16T18:27:54.13
IV.RINC.EHE. ML:1.6 0.00022 0.52 AML other m 2024-09-16T18:27:54.21
IV.RINC.EHN. ML:1.5 0.00015839999999999997 0.3 AML other m 2024-09-16T18:27:54.58
IV.MPPT.EHE. ML:1.0 0.00003515 0.52 AML other m 2024-09-16T18:27:58.63
IV.IMOL.HNE. ML:1.9 0.0004365 1.1 AML other m 2024-09-16T18:28:02.70
IV.MPPT.EHN. ML:1.0 0.00003345 0.42 AML other m 2024-09-16T18:28:03.23
IV.IMOL.HNN. ML:1.9 0.0003945 0.5 AML other m 2024-09-16T18:28:03.96
IV.CRE.HHE. ML:1.2 0.00002835 0.24 AML other m 2024-09-16T18:28:04.95
IV.CRE.HHN. ML:1.4 0.0000458 0.24 AML other m 2024-09-16T18:28:06.54
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