Earthquake with magnitude of ML 2.4 on date 20-09-2023 and time 01:35:29 (UTC) in region 3 km E Marradi (FI)

A magnitude ML 2.4 earthquake occured in region: 3 km E Marradi (FI), on

  • 20-09-2023 01:35:29 (UTC)
  • 20-09-2023 03:35:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0700, 11.6510 at 6 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 3 3139 3139
Tredozio FC 8 1212 4351
Palazzuolo sul Senio FI 10 1154 5505
Portico e San Benedetto FC 12 756 6261
Premilcuore FC 14 799 7060
Modigliana FC 15 4560 11620
Rocca San Casciano FC 15 1910 13530
San Godenzo FI 16 1167 14697
Casola Valsenio RA 17 2617 17314
Brisighella RA 19 7639 24953
Castel del Rio BO 20 1246 26199
Dovadola FC 20 1653 27852

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SW of Faenza (58541 inhabitants)
32 Km S of Imola (69797 inhabitants)
36 Km W of Forlì (117913 inhabitants)
46 Km NE of Firenze (382808 inhabitants)
48 Km W of Cesena (96758 inhabitants)
49 Km E of Prato (191150 inhabitants)
51 Km NE of Scandicci (50609 inhabitants)
53 Km SE of Bologna (386663 inhabitants)
58 Km SW of Ravenna (159116 inhabitants)
61 Km E of Pistoia (90315 inhabitants)
70 Km N of Arezzo (99543 inhabitants)
73 Km W of Rimini (147750 inhabitants)
85 Km S of Ferrara (133155 inhabitants)
86 Km SE of Modena (184973 inhabitants)
87 Km NE of Siena (53903 inhabitants)
95 Km E of Lucca (89046 inhabitants)
100 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 2.4 2023-09-20
01:35:29
44.0698 11.6507 6 2023-09-20
01:52:41
Sala Sismica INGV-Roma 121256801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-20 01:35:29 ± 0.14
Latitude 44.0698 ± 0.0054
Longitude 11.6507 ± 0.0088
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121256801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 668
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 126
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50002
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 15
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 62
Type of magnitude ML
Reference to an origin 121256801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-20 01:52:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.SABO.HHZ. 2023-09-20T01:36:37.69 3.0 undecidable manual Sn -0.5 0
IV.MMO1.EHZ. 2023-09-20T01:36:26.03 3.0 undecidable manual Sg 4.75 0
IV.MF5.EHZ. 2023-09-20T01:36:25.17 3.0 undecidable manual Sg 3.57 0
IV.CAMP.HHZ. 2023-09-20T01:36:03.49 3.0 undecidable manual Pn 0.97 0
IV.ATMI.HHZ. 2023-09-20T01:35:59.60 3.0 undecidable manual S 0.18 0
IV.MGAB.HHZ. 2023-09-20T01:35:52.90 3.0 positive manual P 1.35 0
GU.POPM.HHZ. 2023-09-20T01:35:52.32 3.0 undecidable manual S 0.39 0
IV.CRE.HHZ. 2023-09-20T01:35:47.34 0.3 undecidable manual S 154 55.5 50 -0.02 71
IV.BRSN.EHZ. 2023-09-20T01:35:45.94 0.3 undecidable manual S 55 41.625 99 2.32 21
IV.ATVO.HHZ. 2023-09-20T01:35:45.88 3.0 positive manual P -0.51 0
IV.PIEI.HHZ. 2023-09-20T01:35:45.00 3.0 negative manual P -0.59 0
IV.ATMI.HHZ. 2023-09-20T01:35:45.91 3.0 negative manual P -0.11 0
IV.NARO.HHZ. 2023-09-20T01:35:44.57 3.0 positive manual P -0.68 0
IV.CAFI.HHZ. 2023-09-20T01:35:44.55 3.0 positive manual P 0.17 0
IV.ATPI.EHZ. 2023-09-20T01:35:44.68 3.0 negative manual P -0.7 0
IV.IMOL.EHZ. 2023-09-20T01:35:42.68 0.3 undecidable manual S 13 32.9448 101 2.03 28
IV.CSNT.HHZ. 2023-09-20T01:35:42.73 3.0 positive manual P 0.77 0
IV.MTRZ.HHZ. 2023-09-20T01:35:42.82 0.6 undecidable manual S 326 32.4453 101 2.36 13
IV.MOCL.EHZ. 2023-09-20T01:35:42.19 0.3 undecidable manual S 259 38.1285 99 -0.24 70
IV.OSSC.HHZ. 2023-09-20T01:35:41.39 3.0 positive manual P 0.02 0
GU.POPM.HHZ. 2023-09-20T01:35:41.55 3.0 positive manual P -0.26 0
IV.PARC.HHZ. 2023-09-20T01:35:40.77 3.0 undecidable manual P -0.44 0
IV.CRMI.HHZ. 2023-09-20T01:35:40.33 3.0 positive manual P 0.17 0
IV.BOSL.HHZ. 2023-09-20T01:35:39.26 0.6 undecidable manual S 235 26.8509 103 0.67 42
IV.RUFI.EHZ. 2023-09-20T01:35:39.35 0.3 undecidable manual S 204 28.0497 103 0.36 69
IV.CRE.HHZ. 2023-09-20T01:35:38.80 0.3 positive manual P 154 55.5 50 -0.81 57
IV.SEI.HHZ. 2023-09-20T01:35:37.59 0.3 undecidable manual S 266 23.3544 105 0.19 73
IV.FNVD.HHZ. 2023-09-20T01:35:37.01 3.0 negative manual P -0.16 0
IV.SFI.EHZ. 2023-09-20T01:35:37.87 0.6 undecidable manual S 139 24.0537 105 0.22 48
IV.BRSN.EHZ. 2023-09-20T01:35:37.72 0.3 negative manual P 55 41.625 99 0.28 69
IV.RINC.EHZ. 2023-09-20T01:35:37.07 0.3 undecidable manual S 190 20.6682 107 0.58 66
IV.MPPT.EHZ. 2023-09-20T01:35:37.43 3.0 positive manual P -0.19 0
IV.VISG.HHZ. 2023-09-20T01:35:36.83 0.3 undecidable manual S 308 21.7671 106 -0.02 75
IV.MOCL.EHZ. 2023-09-20T01:35:36.06 0.1 positive manual P 259 38.1285 99 -0.7 82
IV.VMGN.HHZ. 2023-09-20T01:35:35.78 0.3 undecidable manual S 216 15.873 111 0.85 60
IV.IMOL.EHZ. 2023-09-20T01:35:35.66 0.6 negative manual P 13 32.9448 101 -0.07 49
IV.MTRZ.HHZ. 2023-09-20T01:35:35.86 0.1 negative manual P 326 32.4453 101 0.24 94
IV.RUFI.EHZ. 2023-09-20T01:35:34.54 0.1 positive manual P 204 28.0497 103 -0.23 95
IT.MOG.HNZ. 2023-09-20T01:35:34.32 0.3 undecidable manual S 40 14.4744 113 -0.16 74
IV.BOSL.HHZ. 2023-09-20T01:35:34.47 0.1 positive manual P 235 26.8509 103 -0.07 99
IV.RINC.EHZ. 2023-09-20T01:35:33.38 0.1 positive manual P 190 20.6682 107 0.05 100
IV.SEI.HHZ. 2023-09-20T01:35:33.54 0.1 positive manual P 266 23.3544 105 -0.31 94
IV.SFI.EHZ. 2023-09-20T01:35:33.72 0.6 positive manual P 139 24.0537 105 -0.28 47
IV.VISG.HHZ. 2023-09-20T01:35:33.13 0.1 positive manual P 308 21.7671 106 -0.41 93
IV.VMGN.HHZ. 2023-09-20T01:35:32.63 0.1 positive manual P 216 15.873 111 0.2 98
IV.LMD.HHZ. 2023-09-20T01:35:31.13 0.3 undecidable manual S 79 4.5954 144 -0.57 68
IT.MRR.HGZ. 2023-09-20T01:35:31.35 0.3 undecidable manual S 261 3.7962 148 -0.2 75
IT.MOG.HNZ. 2023-09-20T01:35:31.82 0.1 undecidable manual P 40 14.4744 113 -0.35 95
IT.MRR.HGZ. 2023-09-20T01:35:30.25 0.1 undecidable manual P 261 3.7962 148 -0.22 99
IV.LMD.HHZ. 2023-09-20T01:35:29.94 1.0 undecidable manual P 79 4.5954 144 -0.62 22
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VMGN.HHE. ML:2.2 0.001565 1.58 AML other m 2023-09-20T01:35:36.19
IV.SEI.HHN. ML:3.4 0.015349999999999999 0.28 AML other m 2023-09-20T01:35:38.05
IV.VMGN.HHN. ML:2.4 0.002385 0.7 AML other m 2023-09-20T01:35:38.13
IV.RINC.EHE. ML:2.7 0.00395 0.6 AML other m 2023-09-20T01:35:38.86
IV.SFI.HNE. ML:2.4 0.00152 0.74 AML other m 2023-09-20T01:35:38.33
IV.SFI.EHE. ML:2.4 0.0015699999999999998 0.76 AML other m 2023-09-20T01:35:38.33
IV.VISG.HHE. ML:2.3 0.0015249999999999999 0.76 AML other m 2023-09-20T01:35:39.45
IV.BOSL.HHN. ML:2.2 0.0009535 0.4 AML other m 2023-09-20T01:35:39.59
IV.BOSL.HHE. ML:1.9 0.0005110000000000001 0.36 AML other m 2023-09-20T01:35:39.60
IV.RUFI.EHN. ML:2.4 0.0014700000000000002 0.44 AML other m 2023-09-20T01:35:39.46
IV.RUFI.EHE. ML:1.9 0.000439 0.42 AML other m 2023-09-20T01:35:39.73
IV.VISG.HHN. ML:2.4 0.00172 0.34 AML other m 2023-09-20T01:35:39.59
IV.SEI.HHE. ML:3.0 0.00753 0.4 AML other m 2023-09-20T01:35:40.28
IV.RINC.EHN. ML:2.6 0.0028650000000000004 1.46 AML other m 2023-09-20T01:35:41.79
IV.SFI.HNN. ML:2.4 0.0015249999999999999 0.8 AML other m 2023-09-20T01:35:41.51
IV.SFI.EHN. ML:2.4 0.00156 0.82 AML other m 2023-09-20T01:35:41.52
IV.MOCL.EHE. ML:2.4 0.000889 0.16 AML other m 2023-09-20T01:35:42.58
IV.MOCL.EHN. ML:2.7 0.001815 0.16 AML other m 2023-09-20T01:35:42.73
IV.MTRZ.HNE. ML:2.7 0.002485 0.3 AML other m 2023-09-20T01:35:43.47
IV.MTRZ.HHE. ML:2.7 0.00252 0.5 AML other m 2023-09-20T01:35:44.63
IV.IMOL.EHN. ML:2.2 0.00080776 1.3 AML other m 2023-09-20T01:35:45.23
IV.FNVD.HHE. ML:2.7 0.0017649999999999999 1.58 AML other m 2023-09-20T01:35:45.84
IV.MPPT.EHN. ML:2.2 0.0004545 0.8 AML other m 2023-09-20T01:35:46.09
IV.BRSN.HNN. ML:2.7 0.0016799999999999999 0.58 AML other m 2023-09-20T01:35:46.14
IV.MTRZ.HHN. ML:2.7 0.00246 0.38 AML other m 2023-09-20T01:35:47.52
IV.MTRZ.HNN. ML:2.7 0.0023650000000000003 0.38 AML other m 2023-09-20T01:35:47.52
IV.FNVD.HHN. ML:2.0 0.0003435 0.62 AML other m 2023-09-20T01:35:47.24
IV.CRE.HHN. ML:2.8 0.001495 0.22 AML other m 2023-09-20T01:35:47.78
IV.MPPT.EHE. ML:2.3 0.0005985000000000001 0.74 AML other m 2023-09-20T01:35:47.44
IV.CRE.HHE. ML:2.4 0.0006035 0.2 AML other m 2023-09-20T01:35:48.22
IV.CRMI.HHE. ML:1.8 0.000127 0.34 AML other m 2023-09-20T01:35:49.55
IV.CRMI.HHN. ML:2.2 0.000329 0.32 AML other m 2023-09-20T01:35:49.54
IV.IMOL.HNN. ML:2.6 0.0019950000000000002 0.52 AML other m 2023-09-20T01:35:49.87
IV.IMOL.EHE. ML:2.3 0.0009655 0.66 AML other m 2023-09-20T01:35:50.50
IV.IMOL.HNE. ML:2.6 0.001795 1.6 AML other m 2023-09-20T01:35:50.83
GU.POPM.HHE. ML:2.3 0.0003075 0.26 AML other m 2023-09-20T01:35:54.25
IV.BRSN.EHE. ML:2.6 0.00128 0.62 AML other m 2023-09-20T01:35:54.95
IV.BRSN.HNE. ML:2.7 0.00176 0.6 AML other m 2023-09-20T01:35:54.97
IV.PARC.HHN. ML:2.2 0.0002545 0.5 AML other m 2023-09-20T01:35:55.16
IV.OSSC.HHE. ML:2.4 0.0004395 1.36 AML other m 2023-09-20T01:35:55.95
IV.OSSC.HHN. ML:2.3 0.000367 0.58 AML other m 2023-09-20T01:35:57.40
IV.BRSN.EHN. ML:2.7 0.00181 0.8 AML other m 2023-09-20T01:35:57.68
GU.POPM.HHN. ML:2.2 0.0002465 1.58 AML other m 2023-09-20T01:35:57.16
IV.CAFI.HHE. ML:2.4 0.00028149999999999996 0.6 AML other m 2023-09-20T01:35:58.94
IV.CAFI.HNE. ML:2.3 0.00026349999999999995 0.6 AML other m 2023-09-20T01:35:58.94
IV.CSNT.HHN. ML:2.3 0.00033999999999999997 0.42 AML other m 2023-09-20T01:35:59.53
IV.CAFI.HHN. ML:2.1 0.0001565 0.66 AML other m 2023-09-20T01:36:00.54
IV.PARC.HHE. ML:2.0 0.000177 0.48 AML other m 2023-09-20T01:36:00.40
IV.CAFI.HNN. ML:2.0 0.00013700000000000002 0.76 AML other m 2023-09-20T01:36:00.92
IV.CSNT.HHE. ML:2.3 0.00034550000000000005 0.58 AML other m 2023-09-20T01:36:01.39
IV.NARO.HHN. ML:1.9 0.00008599999999999999 0.78 AML other m 2023-09-20T01:36:03.81
IV.ATPI.EHE. ML:2.0 0.0001105 1.5 AML other m 2023-09-20T01:36:05.05
IV.ATPI.EHN. ML:2.0 0.0001265 1.26 AML other m 2023-09-20T01:36:06.05
IV.NARO.HHE. ML:1.8 0.00007735 0.66 AML other m 2023-09-20T01:36:08.55
IV.ATMI.HHN. ML:2.6 0.00041549999999999996 0.68 AML other m 2023-09-20T01:36:10.40
IV.ATVO.HHN. ML:2.2 0.00014299999999999998 0.5 AML other m 2023-09-20T01:36:11.33
IV.PIEI.HHE. ML:1.9 0.00008255000000000001 0.7 AML other m 2023-09-20T01:36:11.27
IV.PIEI.HHN. ML:1.8 0.00007705 0.54 AML other m 2023-09-20T01:36:13.54
IV.ATVO.HHE. ML:2.3 0.00019 0.92 AML other m 2023-09-20T01:36:15.94
IV.ATMI.HHE. ML:2.5 0.0003055 1.36 AML other m 2023-09-20T01:36:20.73
IV.CAMP.HHN. ML:2.3 0.00004720000000000001 1.34 AML other m 2023-09-20T01:36:47.74
IV.CAMP.HHE. ML:2.2 0.000036200000000000006 1.12 AML other m 2023-09-20T01:36:58.24
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