Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 29-11-2023 and time 01:51:53 (UTC) in region 3 km W Tredozio (FC)

A magnitude ML 1.0 earthquake occured in region: 3 km W Tredozio (FC), on

  • 29-11-2023 01:51:53 (UTC)
  • 29-11-2023 02:51:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0700, 11.7100 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
Tredozio FC 3 1212 1212
Portico e San Benedetto FC 8 756 1968
Marradi FI 8 3139 5107
Rocca San Casciano FC 11 1910 7017
Premilcuore FC 12 799 7816
Modigliana FC 12 4560 12376
Palazzuolo sul Senio FI 14 1154 13530
Dovadola FC 15 1653 15183
San Godenzo FI 18 1167 16350
Brisighella RA 18 7639 23989
Galeata FC 18 2516 26505
Casola Valsenio RA 19 2617 29122
Civitella di Romagna FC 20 3786 32908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Faenza (58541 inhabitants)
32 Km SW of Forlì (117913 inhabitants)
32 Km S of Imola (69797 inhabitants)
43 Km W of Cesena (96758 inhabitants)
49 Km NE of Firenze (382808 inhabitants)
53 Km E of Prato (191150 inhabitants)
55 Km NE of Scandicci (50609 inhabitants)
55 Km SW of Ravenna (159116 inhabitants)
56 Km SE of Bologna (386663 inhabitants)
65 Km E of Pistoia (90315 inhabitants)
68 Km W of Rimini (147750 inhabitants)
69 Km N of Arezzo (99543 inhabitants)
86 Km S of Ferrara (133155 inhabitants)
89 Km NE of Siena (53903 inhabitants)
89 Km SE of Modena (184973 inhabitants)
98 Km W of Pesaro (94582 inhabitants)
100 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 1.0 2023-11-29
01:51:53		 44.0703 11.7103 10 2023-11-29
02:17:12		 Sala Sismica INGV-Roma 123548301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-29 01:51:53 ± 0.11
Latitude 44.0703 ± 0.0045
Longitude 11.7103 ± 0.0100
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123548301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 725
Semi-minor axis of confidence ellipse (meter) 519
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.27879
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 123548301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-29 02:17:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BOSL.HHZ. 2023-11-29T01:52:05.19 0.1 undecidable manual S 240 30.9468 50 0.2 95
IV.SEI.HHZ. 2023-11-29T01:52:04.40 0.1 undecidable manual S 266 28.0497 50 0.17 96
IV.VISG.HHZ. 2023-11-29T01:52:03.71 0.1 undecidable manual S 301 25.6521 111 0.2 97
IV.SFI.EHZ. 2023-11-29T01:52:02.22 0.1 undecidable manual S 149 21.3675 115 0.07 99
IV.VMGN.HHZ. 2023-11-29T01:52:01.56 0.1 undecidable manual S 228 19.1697 117 0.11 100
IV.BOSL.HHZ. 2023-11-29T01:52:00.40 0.6 negative manual P 240 30.9468 50 0.06 49
IV.VISG.HHZ. 2023-11-29T01:51:59.35 0.3 negative manual P 301 25.6521 111 -0.14 73
IT.MOG.HNE. 2023-11-29T01:51:59.68 0.1 undecidable manual S 22 11.9769 129 0.32 96
IV.SEI.HHZ. 2023-11-29T01:51:59.35 0.1 positive manual P 266 28.0497 50 -0.55 89
IV.VMGN.HHZ. 2023-11-29T01:51:58.39 0.3 positive manual P 228 19.1697 117 0.09 75
IV.SFI.EHZ. 2023-11-29T01:51:58.63 0.6 positive manual P 149 21.3675 115 -0.07 50
IT.MOG.HNE. 2023-11-29T01:51:56.95 0.1 undecidable manual P 22 11.9769 129 -0.14 100
IT.MRR.HGZ. 2023-11-29T01:51:56.30 0.1 undecidable manual P 265 8.5803 139 -0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VMGN.HHE. ML:0.8 0.0000552 1.68 AML other m 2023-11-29T01:52:02.11
IV.VMGN.HHN. ML:0.9 0.0000582 0.42 AML other m 2023-11-29T01:52:02.69
IV.VISG.HHN. ML:1.1 0.00007495 0.16 AML other m 2023-11-29T01:52:03.83
IV.VISG.HHE. ML:0.8 0.000040300000000000004 0.24 AML other m 2023-11-29T01:52:03.96
IV.SEI.HHN. ML:1.5 0.000182 0.3 AML other m 2023-11-29T01:52:04.69
IV.SEI.HHE. ML:1.2 0.00007500000000000001 0.38 AML other m 2023-11-29T01:52:09.30
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