Earthquake with magnitude of ML 1.4 on date 18-09-2023 and time 05:41:16 (UTC) in region 3 km W Tredozio (FC)

A magnitude ML 1.4 earthquake occured in region: 3 km W Tredozio (FC), on

  • 18-09-2023 05:41:16 (UTC)
  • 18-09-2023 07:41:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0760, 11.7080 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.

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
Marradi FI 8 3139 4351
Portico e San Benedetto FC 8 756 5107
Rocca San Casciano FC 11 1910 7017
Modigliana FC 11 4560 11577
Premilcuore FC 12 799 12376
Palazzuolo sul Senio FI 13 1154 13530
Dovadola FC 15 1653 15183
Brisighella RA 17 7639 22822
Casola Valsenio RA 18 2617 25439
San Godenzo FI 18 1167 26606
Galeata FC 19 2516 29122

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Faenza (58541 inhabitants)
31 Km S of Imola (69797 inhabitants)
31 Km SW of Forlì (117913 inhabitants)
43 Km W of Cesena (96758 inhabitants)
50 Km NE of Firenze (382808 inhabitants)
53 Km E of Prato (191150 inhabitants)
55 Km SW of Ravenna (159116 inhabitants)
55 Km NE of Scandicci (50609 inhabitants)
55 Km SE of Bologna (386663 inhabitants)
65 Km E of Pistoia (90315 inhabitants)
69 Km W of Rimini (147750 inhabitants)
69 Km N of Arezzo (99543 inhabitants)
85 Km S of Ferrara (133155 inhabitants)
89 Km SE of Modena (184973 inhabitants)
89 Km NE of Siena (53903 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 1.4 2023-09-18
05:41:16
44.076 11.7077 10 2023-09-18
05:45:59
Sala Sismica INGV-Roma 121162101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-18 05:41:16 ± 0.16
Latitude 44.0760 ± 0.0045
Longitude 11.7077 ± 0.0088
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 121162101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 760
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 261
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38491
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 121162101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-18 05:45:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2023-09-18T05:41:49.49 3.0 undecidable manual Pg 2.19 0
IV.NARO.HHZ. 2023-09-18T05:41:43.62 3.0 undecidable manual S -1.83 0
IV.FRON.EHZ. 2023-09-18T05:41:34.08 3.0 undecidable manual P -1.7 0
IV.MOCL.EHZ. 2023-09-18T05:41:30.86 0.1 undecidable manual S 260 42.7239 50 0.23 92
IV.RUFI.EHZ. 2023-09-18T05:41:27.42 0.1 undecidable manual S 211 30.747 50 -0.01 99
IV.CRE.HHZ. 2023-09-18T05:41:26.60 3.0 undecidable manual P -0.5 0
IV.SEI.HHZ. 2023-09-18T05:41:26.49 0.1 undecidable manual S 265 27.9498 50 -0.18 96
IV.RINC.EHZ. 2023-09-18T05:41:25.10 0.1 undecidable manual S 201 22.4553 114 -0.02 100
IV.VISG.HHZ. 2023-09-18T05:41:25.93 0.1 undecidable manual S 300 25.1526 50 0.01 100
IV.VMGN.HHZ. 2023-09-18T05:41:24.09 0.1 undecidable manual S 226 19.3695 118 -0.06 100
IV.MOCL.EHZ. 2023-09-18T05:41:24.97 1.0 positive manual P 260 42.7239 50 0.29 23
IV.SEI.HHZ. 2023-09-18T05:41:22.23 0.6 positive manual P 265 27.9498 50 -0.16 48
IV.RUFI.EHZ. 2023-09-18T05:41:22.80 0.1 positive manual P 211 30.747 50 -0.03 98
IV.VISG.HHZ. 2023-09-18T05:41:21.80 1.0 undecidable manual P 300 25.1526 50 -0.16 24
IV.VMGN.HHZ. 2023-09-18T05:41:21.03 0.1 positive manual P 226 19.3695 118 0.09 99
IV.RINC.EHZ. 2023-09-18T05:41:21.56 0.6 positive manual P 201 22.4553 114 0.06 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VMGN.HHE. ML:1.2 0.000131 0.9 AML other m 2023-09-18T05:41:24.07
IV.RINC.EHN. ML:1.4 0.0001565 0.54 AML other m 2023-09-18T05:41:25.24
IV.VMGN.HHN. ML:1.2 0.0001315 0.64 AML other m 2023-09-18T05:41:25.21
IV.RINC.EHE. ML:1.4 0.000175 1.38 AML other m 2023-09-18T05:41:25.15
IV.VISG.HHE. ML:1.2 0.000096 1.76 AML other m 2023-09-18T05:41:25.96
IV.VISG.HHN. ML:1.4 0.000129 0.12 AML other m 2023-09-18T05:41:26.12
IV.SEI.HHE. ML:1.5 0.0001815 0.88 AML other m 2023-09-18T05:41:26.14
IV.SEI.HHN. ML:1.8 0.0003175 0.3 AML other m 2023-09-18T05:41:28.29
IV.MOCL.EHN. ML:1.3 0.00006175 0.2 AML other m 2023-09-18T05:41:31.90
IV.MOCL.EHE. ML:1.3 0.00006675000000000001 0.34 AML other m 2023-09-18T05:41:31.68
IV.CRE.HHE. ML:1.3 0.00005095 1.34 AML other m 2023-09-18T05:41:35.98
IV.CRE.HHN. ML:1.4 0.000056550000000000006 0.36 AML other m 2023-09-18T05:41:35.75
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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