Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 18-09-2023 and time 12:14:49 (Italy) in region 2 km SE Marradi (FI)

A magnitude ML 2.5 earthquake occured in region: 2 km SE Marradi (FI), on

  • 18-09-2023 10:14:49 (UTC)
  • 18-09-2023 12:14:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0640, 11.6210 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 8 1154 4293
Tredozio FC 10 1212 5505
Portico e San Benedetto FC 14 756 6261
San Godenzo FI 15 1167 7428
Premilcuore FC 16 799 8227
Modigliana FC 17 4560 12787
Rocca San Casciano FC 18 1910 14697
Casola Valsenio RA 18 2617 17314
Vicchio FI 19 8044 25358
Castel del Rio BO 19 1246 26604

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Faenza (58541 inhabitants)
33 Km S of Imola (69797 inhabitants)
38 Km W of Forlì (117913 inhabitants)
44 Km NE of Firenze (382808 inhabitants)
47 Km E of Prato (191150 inhabitants)
49 Km NE of Scandicci (50609 inhabitants)
50 Km W of Cesena (96758 inhabitants)
53 Km SE of Bologna (386663 inhabitants)
58 Km E of Pistoia (90315 inhabitants)
61 Km SW of Ravenna (159116 inhabitants)
70 Km NW of Arezzo (99543 inhabitants)
76 Km W of Rimini (147750 inhabitants)
85 Km SE of Modena (184973 inhabitants)
86 Km N of Siena (53903 inhabitants)
86 Km S of Ferrara (133155 inhabitants)
93 Km E of Lucca (89046 inhabitants)
99 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 2.5 2023-09-18
10:14:49		 44.0638 11.6207 7 2023-09-18
10:28:55		 Sala Sismica INGV-Roma 121179811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-18 10:14:49 ± 0.09
Latitude 44.0638 ± 0.0045
Longitude 11.6207 ± 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 121179811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86605
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 74
Type of magnitude ML
Reference to an origin 121179811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-18 10:28:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAPA.HHZ. 2023-09-18T10:16:45.75 3.0 undecidable manual Sn 1.59 0
IV.IVGP.HHZ. 2023-09-18T10:16:38.69 3.0 undecidable manual Pg 18.209999 0
GU.MGRO.HHZ. 2023-09-18T10:16:18.56 3.0 undecidable manual Sg 11.37 0
IV.PIPA.HHZ. 2023-09-18T10:16:16.48 3.0 negative manual Pn -1.34 0
IV.LRP.EHZ. 2023-09-18T10:16:16.62 3.0 undecidable manual Sg 7.4 0
SL.BOJS.BHZ. 2023-09-18T10:16:12.17 3.0 undecidable manual Sn -0.18 0
GU.CANO.HHZ. 2023-09-18T10:16:04.15 3.0 undecidable manual Sn 4.52 0
OX.DRE.HHZ. 2023-09-18T10:16:02.51 3.0 undecidable manual Sn 0.3 0
NI.VINO.HHZ. 2023-09-18T10:16:00.78 3.0 undecidable manual Sn 0.25 0
OX.MPRI.HHZ. 2023-09-18T10:15:58.80 3.0 undecidable manual Sn 0.76 0
IV.STAL.HHZ. 2023-09-18T10:15:57.13 3.0 undecidable manual Sn 0.42 0
OX.MLN.HHZ. 2023-09-18T10:15:53.97 3.0 undecidable manual Sn 0.36 0
IV.MAGA.HHZ. 2023-09-18T10:15:49.77 3.0 undecidable manual Sg 4.78 0
OX.VARN.HHZ. 2023-09-18T10:15:47.21 3.0 undecidable manual Sn -0.45 0
GU.RSP.HHZ. 2023-09-18T10:15:47.00 3.0 undecidable manual Pn 6.66 0
SL.BOJS.BHZ. 2023-09-18T10:15:45.17 3.0 undecidable manual Pg 9.36 0
IV.MNTP.HNZ. 2023-09-18T10:15:45.95 3.0 undecidable manual Sg 5.71 0
GU.GORR.HHZ. 2023-09-18T10:15:44.32 3.0 undecidable manual Sn 1.48 0
IV.GUMA.HHZ. 2023-09-18T10:15:44.21 3.0 undecidable manual Sg 4.75 0
NI.VINO.HHZ. 2023-09-18T10:15:29.35 3.0 negative manual Pn 0.18 0
IV.STAL.HHZ. 2023-09-18T10:15:28.11 3.0 positive manual Pn 1.09 0
OX.MLN.HHZ. 2023-09-18T10:15:25.97 3.0 positive manual Pn 0.69 0
IV.NRCA.HHZ. 2023-09-18T10:15:23.11 3.0 negative manual Pg 5.17 0
ST.VARA.EHZ. 2023-09-18T10:15:21.14 3.0 undecidable manual Pn 0.91 0
IV.MF5.EHZ. 2023-09-18T10:15:18.12 3.0 negative manual Pn -0.83 0
IV.FDMO.HHZ. 2023-09-18T10:15:17.37 3.0 positive manual P 1.65 0
IV.ASSB.HHZ. 2023-09-18T10:15:15.34 3.0 negative manual P 2.5 0
GU.POPM.HHZ. 2023-09-18T10:15:11.52 0.6 undecidable manual S 269 68.8755 50 0.58 40
IV.CSNT.HHZ. 2023-09-18T10:15:11.81 1.0 undecidable manual S 202 70.6737 50 0.39 21
IV.MURB.HHZ. 2023-09-18T10:15:10.65 3.0 negative manual P 1.03 0
IV.PARC.HHZ. 2023-09-18T10:15:10.80 0.3 undecidable manual S 133 67.5768 50 0.22 67
IV.CRMI.HHZ. 2023-09-18T10:15:08.60 0.3 undecidable manual S 240 59.2962 50 0.24 67
IV.SBPO.HNZ. 2023-09-18T10:15:07.84 3.0 negative manual P -2.39 0
IV.CRE.HHZ. 2023-09-18T10:15:07.49 0.3 undecidable manual S 152 55.9995 50 -0.01 71
IV.ATMI.HHZ. 2023-09-18T10:15:06.68 3.0 undecidable manual P 96.126 0.71 0
GU.MAIM.HHZ. 2023-09-18T10:15:06.40 3.0 undecidable manual P 91.6416 1.13 0
IV.ATPI.EHZ. 2023-09-18T10:15:05.54 3.0 undecidable manual P 92.4408 0.15 0
IV.PIEI.HHZ. 2023-09-18T10:15:05.36 3.0 negative manual P -0.76 0
IV.CAFI.HHZ. 2023-09-18T10:15:04.40 1.0 undecidable manual P 161 86.0472 50 -0.01 22
IV.FNVD.HHZ. 2023-09-18T10:15:03.35 0.6 undecidable manual S 286 41.3253 50 -0.22 47
IV.MPPT.EHZ. 2023-09-18T10:15:03.87 0.3 undecidable manual S 255 43.9227 50 -0.41 67
GU.POPM.HHZ. 2023-09-18T10:15:02.33 0.6 undecidable manual P 269 68.8755 50 0.56 41
IV.IMOL.EHZ. 2023-09-18T10:15:02.24 0.3 undecidable manual S 16 34.2435 102 0.89 57
IV.CSNT.HHZ. 2023-09-18T10:15:02.28 0.6 undecidable manual P 202 70.6737 50 0.24 44
IV.PARC.HHZ. 2023-09-18T10:15:01.01 1.0 undecidable manual P 133 67.5768 50 -0.55 21
IV.OSSC.HHZ. 2023-09-18T10:15:01.62 1.0 undecidable manual P 207 67.0773 50 0.14 23
IV.MOCL.EHZ. 2023-09-18T10:15:01.58 0.3 undecidable manual S 260 35.742 101 -0.28 70
IV.CRMI.HHZ. 2023-09-18T10:15:00.12 0.3 undecidable manual P 240 59.2962 50 -0.15 68
IV.CRE.HHZ. 2023-09-18T10:14:59.19 1.0 undecidable manual P 152 55.9995 50 -0.59 21
IV.BOSL.HHZ. 2023-09-18T10:14:58.60 0.3 undecidable manual S 233 24.5532 106 0.49 68
IV.SFI.EHZ. 2023-09-18T10:14:58.14 0.3 undecidable manual S 134 25.2525 106 -0.2 72
IV.MPPT.EHZ. 2023-09-18T10:14:57.39 1.0 undecidable manual P 255 43.9227 50 -0.52 22
IV.SEI.HHZ. 2023-09-18T10:14:57.19 0.3 undecidable manual S 267 20.9679 109 0.29 71
IV.VISG.HHZ. 2023-09-18T10:14:56.48 0.3 undecidable manual S 313 20.3685 109 -0.22 72
IV.RINC.EHZ. 2023-09-18T10:14:56.96 0.3 undecidable manual S 183 19.7691 110 0.45 69
IV.IMOL.EHZ. 2023-09-18T10:14:56.49 0.6 undecidable manual P 16 34.2435 102 0.26 47
IV.FNVD.HHZ. 2023-09-18T10:14:56.96 1.0 undecidable manual P 286 41.3253 50 -0.55 22
IV.MOCL.EHZ. 2023-09-18T10:14:55.98 1.0 undecidable manual P 260 35.742 101 -0.54 22
IV.MTRZ.HHZ. 2023-09-18T10:14:55.75 0.1 undecidable manual P 331 31.746 103 0.01 99
IV.SFI.EHZ. 2023-09-18T10:14:54.03 0.1 undecidable manual P 134 25.2525 106 -0.46 91
IV.BOSL.HHZ. 2023-09-18T10:14:54.37 0.1 undecidable manual P 233 24.5532 106 0.01 100
IV.VISG.HHZ. 2023-09-18T10:14:53.15 0.1 undecidable manual P 313 20.3685 109 -0.4 93
IV.RINC.EHZ. 2023-09-18T10:14:53.41 0.6 undecidable manual P 183 19.7691 110 -0.02 50
IV.SEI.HHZ. 2023-09-18T10:14:53.52 0.1 undecidable manual P 267 20.9679 109 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:2.6 0.00276 0.16 AML other m 2023-09-18T10:14:56.91
IV.VISG.HHE. ML:2.5 0.0023200000000000004 0.24 AML other m 2023-09-18T10:14:57.08
IV.SEI.HHN. ML:3.4 0.02095 0.22 AML other m 2023-09-18T10:14:57.61
IV.SEI.HHE. ML:3.1 0.00931 0.3 AML other m 2023-09-18T10:14:58.27
IV.BOSL.HHN. ML:2.2 0.0010345 1.58 AML other m 2023-09-18T10:14:59.80
IV.SFI.EHE. ML:2.6 0.002615 1.2 AML other m 2023-09-18T10:14:59.07
IV.SFI.HNE. ML:2.6 0.002615 0.62 AML other m 2023-09-18T10:14:59.07
IV.BOSL.HHE. ML:2.1 0.000769 1.1 AML other m 2023-09-18T10:14:59.14
IV.RINC.EHE. ML:2.6 0.0034249999999999997 0.26 AML other m 2023-09-18T10:15:00.18
IV.SFI.EHN. ML:2.6 0.00232 0.6 AML other m 2023-09-18T10:15:00.48
IV.SFI.HNN. ML:2.6 0.002345 0.62 AML other m 2023-09-18T10:15:00.47
IV.RINC.EHN. ML:2.6 0.00309 1.08 AML other m 2023-09-18T10:15:00.80
IV.MOCL.EHN. ML:3.1 0.00483 0.16 AML other m 2023-09-18T10:15:02.16
IV.MOCL.EHE. ML:2.9 0.002955 0.68 AML other m 2023-09-18T10:15:02.40
IV.MTRZ.HHE. ML:2.8 0.0031349999999999998 0.62 AML other m 2023-09-18T10:15:03.39
IV.MTRZ.HNE. ML:2.8 0.0030600000000000002 0.62 AML other m 2023-09-18T10:15:03.40
IV.IMOL.EHN. ML:2.4 0.0010135 0.18 AML other m 2023-09-18T10:15:03.72
IV.MTRZ.HHN. ML:2.9 0.003875 0.42 AML other m 2023-09-18T10:15:03.89
IV.MTRZ.HNN. ML:2.9 0.00374 0.4 AML other m 2023-09-18T10:15:03.89
IV.IMOL.HNN. ML:2.8 0.002815 1.8 AML other m 2023-09-18T10:15:03.98
IV.IMOL.HNE. ML:2.7 0.00236 0.2 AML other m 2023-09-18T10:15:04.74
IV.MPPT.EHN. ML:2.3 0.000646 0.5 AML other m 2023-09-18T10:15:05.36
IV.MPPT.EHE. ML:2.3 0.0005994999999999999 1.6 AML other m 2023-09-18T10:15:06.06
IV.IMOL.EHE. ML:2.3 0.0008685 0.26 AML other m 2023-09-18T10:15:07.40
IV.CRE.HHN. ML:3.1 0.00266 1.76 AML other m 2023-09-18T10:15:07.07
IV.CRE.HHE. ML:2.6 0.0008185 0.24 AML other m 2023-09-18T10:15:08.64
IV.CRMI.HHE. ML:2.0 0.00021650000000000003 1.58 AML other m 2023-09-18T10:15:08.82
IV.CRMI.HHN. ML:2.3 0.00041749999999999996 1.54 AML other m 2023-09-18T10:15:09.80
IV.SBPO.HNE. ML:3.4 0.0017549999999999998 0.08 AML other m 2023-09-18T10:15:10.24
IV.OSSC.HHE. ML:2.6 0.0007035 0.2 AML other m 2023-09-18T10:15:11.47
IV.OSSC.HHN. ML:2.4 0.00048499999999999997 0.42 AML other m 2023-09-18T10:15:11.60
GU.POPM.HHE. ML:2.4 0.0004295 0.2 AML other m 2023-09-18T10:15:12.12
GU.POPM.HHN. ML:2.6 0.0007099999999999999 0.22 AML other m 2023-09-18T10:15:12.17
IV.CSNT.HHN. ML:2.4 0.00037649999999999994 0.36 AML other m 2023-09-18T10:15:15.23
IV.CSNT.HHE. ML:2.3 0.000358 0.48 AML other m 2023-09-18T10:15:15.44
IV.PARC.HHN. ML:2.2 0.00028000000000000003 0.34 AML other m 2023-09-18T10:15:17.37
IV.CAFI.HHN. ML:2.2 0.0001835 0.72 AML other m 2023-09-18T10:15:18.56
GU.MAIM.HHN. ML:1.9 0.00009515 0.34 AML other m 2023-09-18T10:15:18.33
IV.CAFI.HHE. ML:2.4 0.0003155 0.78 AML other m 2023-09-18T10:15:18.50
IV.PARC.HHE. ML:2.0 0.000195 1 AML other m 2023-09-18T10:15:19.72
GU.MAIM.HHE. ML:1.8 0.0000633 0.6 AML other m 2023-09-18T10:15:23.13
IV.ZCCA.HHE. ML:1.9 0.0001545 0.42 AML other m 2023-09-18T10:15:23.77
IV.ATPI.EHN. ML:2.2 0.00017449999999999999 0.32 AML other m 2023-09-18T10:15:24.11
IV.ZCCA.HHN. ML:2.0 0.0001995 0.64 AML other m 2023-09-18T10:15:25.95
IV.ATMI.HHN. ML:2.5 0.00036449999999999997 0.44 AML other m 2023-09-18T10:15:26.79
IV.MURB.HHN. ML:2.8 0.000449 0.3 AML other m 2023-09-18T10:15:28.16
IV.PIEI.HHN. ML:1.9 0.00009504999999999999 1.68 AML other m 2023-09-18T10:15:29.14
IV.PIEI.HHE. ML:2.1 0.00012690000000000002 0.36 AML other m 2023-09-18T10:15:29.77
IV.ATPI.EHE. ML:2.1 0.000142 1.54 AML other m 2023-09-18T10:15:30.14
IV.MURB.HHE. ML:2.7 0.00036899999999999997 0.58 AML other m 2023-09-18T10:15:31.04
IV.SBPO.HNN. ML:2.9 0.000593 1.64 AML other m 2023-09-18T10:15:32.96
IV.ASSB.HHN. ML:2.0 0.0000582 1.44 AML other m 2023-09-18T10:15:34.27
IV.ATMI.HHE. ML:2.6 0.00040849999999999995 0.42 AML other m 2023-09-18T10:15:35.68
IV.ASSB.HHE. ML:2.1 0.00007165 1.12 AML other m 2023-09-18T10:15:46.21
OX.VARN.HHN. ML:2.5 0.00007855000000000001 0.64 AML other m 2023-09-18T10:15:49.53
OX.VARN.HNN. ML:2.5 0.0000837 0.52 AML other m 2023-09-18T10:15:49.54
OX.VARN.HHE. ML:2.7 0.0001265 0.62 AML other m 2023-09-18T10:15:50.02
OX.VARN.HNE. ML:2.7 0.0001245 0.62 AML other m 2023-09-18T10:15:50.02
IV.FDMO.HHN. ML:2.0 0.0000424 1.14 AML other m 2023-09-18T10:15:50.69
ST.VARA.EHN. ML:2.7 0.000144 0.36 AML other m 2023-09-18T10:15:51.46
ST.VARA.EHE. ML:2.8 0.00020400000000000003 0.42 AML other m 2023-09-18T10:15:51.58
IV.FDMO.HHE. ML:2.0 0.000040650000000000006 0.96 AML other m 2023-09-18T10:15:51.19
OX.MLN.HHE. ML:2.4 0.000043899999999999996 1.68 AML other m 2023-09-18T10:15:54.99
IV.GUMA.HHE. ML:2.8 0.000253 0.7 AML other m 2023-09-18T10:15:54.06
OX.MLN.HHN. ML:2.2 0.0000374 0.26 AML other m 2023-09-18T10:15:55.66
IV.STAL.HHN. ML:2.7 0.00008199999999999999 0.2 AML other m 2023-09-18T10:15:58.46
IV.GUMA.HHN. ML:2.8 0.0002185 0.48 AML other m 2023-09-18T10:15:59.61
IV.STAL.HHE. ML:2.6 0.00007735 0.22 AML other m 2023-09-18T10:16:00.37
OX.MPRI.HHE. ML:2.6 0.0000594 0.48 AML other m 2023-09-18T10:16:00.58
NI.VINO.HHE. ML:2.5 0.000049850000000000006 1.46 AML other m 2023-09-18T10:16:01.85
NI.VINO.HHN. ML:2.4 0.0000389 0.88 AML other m 2023-09-18T10:16:01.38
OX.MPRI.HHN. ML:2.6 0.00006445000000000001 0.78 AML other m 2023-09-18T10:16:01.59
OX.DRE.HHN. ML:2.6 0.000057900000000000005 0.4 AML other m 2023-09-18T10:16:03.99
OX.DRE.HHE. ML:2.8 0.00007939999999999999 0.88 AML other m 2023-09-18T10:16:04.45
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
Waveforms Seismic signals in miniseed + resp format Download