Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 30-10-2023 and time 06:12:08 (UTC) in region 4 km W Premilcuore (FC)

A magnitude ML 1.5 earthquake occured in region: 4 km W Premilcuore (FC), on

  • 30-10-2023 06:12:08 (UTC)
  • 30-10-2023 07:12:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9930, 11.7260 at 10 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
Premilcuore FC 4 799 799
Portico e San Benedetto FC 6 756 1555
Tredozio FC 10 1212 2767
San Godenzo FI 11 1167 3934
Rocca San Casciano FC 12 1910 5844
Marradi FI 13 3139 8983
Galeata FC 15 2516 11499
Santa Sofia FC 15 4136 15635
Civitella di Romagna FC 17 3786 19421
Modigliana FC 19 4560 23981
Londa FI 19 1840 25821
Dovadola FC 19 1653 27474
Palazzuolo sul Senio FI 20 1154 28628
Dicomano FI 20 5515 34143

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Faenza (58541 inhabitants)
36 Km SW of Forlì (117913 inhabitants)
40 Km S of Imola (69797 inhabitants)
44 Km W of Cesena (96758 inhabitants)
45 Km NE of Firenze (382808 inhabitants)
51 Km NE of Scandicci (50609 inhabitants)
52 Km E of Prato (191150 inhabitants)
60 Km N of Arezzo (99543 inhabitants)
61 Km SW of Ravenna (159116 inhabitants)
64 Km SE of Bologna (386663 inhabitants)
65 Km E of Pistoia (90315 inhabitants)
68 Km W of Rimini (147750 inhabitants)
81 Km NE of Siena (53903 inhabitants)
94 Km S of Ferrara (133155 inhabitants)
96 Km W of Pesaro (94582 inhabitants)
97 Km SE of Modena (184973 inhabitants)
99 Km E of Lucca (89046 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 1.5 2023-10-30
06:12:08		 43.9928 11.7265 10 2023-10-30
06:21:42		 Sala Sismica INGV-Roma 122571751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-30 06:12:08 ± 0.07
Latitude 43.9928 ± 0.0036
Longitude 11.7265 ± 0.0063
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 122571751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 469
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.15383
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 122571751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-30 06:21:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HNZ. 2023-10-30T06:13:18.87 3.0 undecidable manual Sn -0.6 0
FR.AJAC.HHZ.00 2023-10-30T06:13:04.33 3.0 negative manual Pg 7.82 0
IV.RIBO.EHZ.01 2023-10-30T06:13:04.78 3.0 undecidable manual S 206 128.0718 50 1.945 0
IV.GIUL.HHZ. 2023-10-30T06:12:52.41 3.0 negative manual Pn 0.91 0
IV.NARO.HHZ. 2023-10-30T06:12:33.16 3.0 undecidable manual S -0.83 0
IV.CAFI.HHZ. 2023-10-30T06:12:31.79 0.3 undecidable manual S 165 76.0683 50 0.34 63
IV.RIBO.EHZ.01 2023-10-30T06:12:30.03 0.1 undecidable manual P 206 128.0718 50 0.33 75
IV.ARVD.HHZ. 2023-10-30T06:12:28.52 3.0 undecidable manual P 111.7992 1.33 0
IV.PARC.HHZ. 2023-10-30T06:12:26.28 3.0 undecidable manual S -0.58 0
IV.CRE.HHZ. 2023-10-30T06:12:23.04 0.6 undecidable manual S 156 45.2214 50 -0.17 46
IV.MOCL.EHZ. 2023-10-30T06:12:23.12 0.6 undecidable manual S 272 43.5231 50 0.35 44
IV.CAFI.HHZ. 2023-10-30T06:12:22.14 1.0 undecidable manual P 165 76.0683 50 0.45 20
IV.SEI.HHZ. 2023-10-30T06:12:19.15 0.3 undecidable manual S 283 30.1476 50 -0.03 73
IV.VISG.HHZ. 2023-10-30T06:12:19.82 0.6 undecidable manual S 313 31.8459 50 0.18 47
IV.BOSL.HHZ. 2023-10-30T06:12:18.85 0.6 undecidable manual S 256 28.9488 50 -0.01 49
IT.MOG.HNN. 2023-10-30T06:12:16.35 0.1 undecidable manual S 9 19.9689 116 0.32 93
IV.CRE.HHZ. 2023-10-30T06:12:16.54 0.1 undecidable manual P 156 45.2214 50 -0.39 87
IV.MOCL.EHZ. 2023-10-30T06:12:16.68 0.6 undecidable manual P 272 43.5231 50 0 47
IV.SEI.HHZ. 2023-10-30T06:12:14.39 0.1 positive manual P 283 30.1476 50 -0.21 93
IV.VMGN.HHZ. 2023-10-30T06:12:14.91 0.6 undecidable manual S 255 16.0728 121 0.07 49
IV.VISG.HHZ. 2023-10-30T06:12:14.66 0.1 undecidable manual P 313 31.8459 50 -0.21 93
IV.BOSL.HHZ. 2023-10-30T06:12:14.38 0.1 positive manual P 256 28.9488 50 -0.04 97
IV.RINC.EHZ. 2023-10-30T06:12:14.56 0.6 undecidable manual S 219 15.1737 122 -0.02 50
IT.MRR.HGE. 2023-10-30T06:12:13.87 0.1 undecidable manual S 309 12.5763 127 0.02 100
IV.VMGN.HHZ. 2023-10-30T06:12:12.21 0.1 positive manual P 255 16.0728 121 0.11 98
IT.MOG.HNN. 2023-10-30T06:12:12.73 0.1 undecidable manual P 9 19.9689 116 -0.06 98
IV.RINC.EHZ. 2023-10-30T06:12:11.96 0.1 positive manual P 219 15.1737 122 0.01 100
IT.MRR.HGE. 2023-10-30T06:12:11.18 0.1 undecidable manual P 309 12.5763 127 -0.35 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RINC.EHE. ML:1.7 0.00045099999999999996 1.34 AML other m 2023-10-30T06:12:14.08
IV.RINC.EHN. ML:1.6 0.00041749999999999996 1.16 AML other m 2023-10-30T06:12:15.94
IV.VMGN.HHN. ML:1.3 0.000177 0.84 AML other m 2023-10-30T06:12:15.78
IV.VMGN.HHE. ML:1.4 0.00021500000000000002 0.1 AML other m 2023-10-30T06:12:16.13
IV.BOSL.HHN. ML:1.1 0.00005795 0.34 AML other m 2023-10-30T06:12:19.59
IV.SEI.HHE. ML:1.9 0.0003705 0.18 AML other m 2023-10-30T06:12:19.91
IV.BOSL.HHE. ML:1.0 0.000044999999999999996 1.22 AML other m 2023-10-30T06:12:19.83
IV.SEI.HHN. ML:2.2 0.0007700000000000001 0.2 AML other m 2023-10-30T06:12:20.02
IV.VISG.HHN. ML:1.0 0.000048299999999999995 0.8 AML other m 2023-10-30T06:12:22.68
IV.VISG.HHE. ML:0.7 0.000026799999999999998 0.6 AML other m 2023-10-30T06:12:22.98
IV.CRE.HHE. ML:1.6 0.0001295 0.28 AML other m 2023-10-30T06:12:23.65
IV.CRE.HHN. ML:1.9 0.00021300000000000003 0.34 AML other m 2023-10-30T06:12:23.55
IV.MOCL.EHE. ML:1.5 0.0000917 0.5 AML other m 2023-10-30T06:12:24.63
IV.MOCL.EHN. ML:1.5 0.00010345 0.42 AML other m 2023-10-30T06:12:31.81
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