Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 16-01-2023 and time 07:04:25 (UTC) in region 5 km S San Godenzo (FI)

A magnitude ML 1.6 earthquake occured in region: 5 km S San Godenzo (FI), on

  • 16-01-2023 07:04:25 (UTC)
  • 16-01-2023 08:04:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.8840, 11.6270 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
San Godenzo FI 5 1167 1167
Londa FI 5 1840 3007
Dicomano FI 8 5515 8522
Rufina FI 13 7346 15868
Pratovecchio Stia AR 13 5845 21713
Vicchio FI 14 8044 29757
Pelago FI 16 7660 37417
Montemignaio AR 16 566 37983
Premilcuore FC 16 799 38782
Castel San Niccolò AR 17 2707 41489
Pontassieve FI 19 20603 62092

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Firenze (382808 inhabitants)
38 Km E of Scandicci (50609 inhabitants)
42 Km E of Prato (191150 inhabitants)
49 Km SW of Faenza (58541 inhabitants)
50 Km SW of Forlì (117913 inhabitants)
51 Km NW of Arezzo (99543 inhabitants)
53 Km S of Imola (69797 inhabitants)
57 Km W of Cesena (96758 inhabitants)
57 Km E of Pistoia (90315 inhabitants)
67 Km NE of Siena (53903 inhabitants)
72 Km SE of Bologna (386663 inhabitants)
75 Km SW of Ravenna (159116 inhabitants)
78 Km W of Rimini (147750 inhabitants)
90 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
Bulletin
Rev1000 		ML 1.6 2023-01-16
07:04:25		 43.8842 11.6268 10 2024-03-01
17:18:05		 Bollettino Sismico Italiano INGV 116953891
Reviewed
Rev100 		ML 1.6 2023-01-16
07:04:25		 43.8897 11.6308 9 2023-01-16
07:14:43		 Sala Sismica INGV-Roma 113573811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-16 07:04:25 ± 0.06
Latitude 43.8842 ± 0.0036
Longitude 11.6268 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116953891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
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 31
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 116953891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-18 16:09:12

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 113573811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-16 07:14:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHZ. 2023-01-16T07:05:22.30 3.0 undecidable manual Sn -3.74 0
OT.OT15.EHZ. 2023-01-16T07:05:03.60 3.0 undecidable manual Sg 4.64 0
IV.FAVA.HNZ. 2023-01-16T07:05:00.22 3.0 undecidable manual Pn 5.47 0
IV.GRI.EHZ. 2023-01-16T07:04:48.17 3.0 positive manual Pg 6.46 0
IV.SPS2.HHZ. 2023-01-16T07:04:47.28 3.0 negative manual Pg 11.65 0
IV.CRMI.HHZ. 2023-01-16T07:04:42.68 0.3 undecidable manual S 259 52.7028 50 0.31 67
IV.CSNT.HHZ. 2023-01-16T07:04:42.20 0.3 undecidable manual S 211 53.0025 50 -0.24 68
IV.PARC.HHN. 2023-01-16T07:04:42.92 0.6 undecidable manual S 118 55.5 50 -0.2 45
IV.OSSC.HHE. 2023-01-16T07:04:41.65 0.6 undecidable manual S 218 50.3163 50 -0.08 47
IV.MTMR.HNZ. 2023-01-16T07:04:40.60 3.0 undecidable manual Sg 1.09 0
IV.MPPT.EHZ. 2023-01-16T07:04:39.98 0.3 undecidable manual S 281 43.623 50 0.04 72
IV.BRIS.HHZ. 2023-01-16T07:04:39.65 0.6 undecidable manual S 16 39.3273 50 0.85 38
IV.MOCL.EHZ. 2023-01-16T07:04:38.37 0.3 undecidable manual S 291 38.0286 50 -0.08 72
IV.VISG.HHZ. 2023-01-16T07:04:38.24 0.3 undecidable manual S 336 37.1295 50 0.04 73
IV.CRE.HHZ. 2023-01-16T07:04:38.64 0.6 undecidable manual S 138 39.3273 50 -0.14 47
IV.MCRV.HHZ. 2023-01-16T07:04:37.96 3.0 undecidable manual Sn -5.93 0
IV.PARC.HHN. 2023-01-16T07:04:35.83 0.1 undecidable manual P 118 55.5 50 0.16 92
IV.CRMI.HHZ. 2023-01-16T07:04:35.47 0.1 undecidable manual P 259 52.7028 50 0.23 91
IV.SEI.HHZ. 2023-01-16T07:04:35.79 0.3 undecidable manual S 311 28.5492 50 -0.12 73
IV.CSNT.HHZ. 2023-01-16T07:04:35.76 0.6 undecidable manual P 211 53.0025 50 0.48 43
IV.OSSC.HHE. 2023-01-16T07:04:34.99 0.6 undecidable manual P 218 50.3163 50 0.12 47
IV.LMD.HHZ. 2023-01-16T07:04:33.75 0.3 undecidable manual S 17 22.3554 113 -0.2 72
IV.MPPT.EHZ. 2023-01-16T07:04:33.73 0.3 undecidable manual P 281 43.623 50 -0.11 71
IV.BRIS.HHZ. 2023-01-16T07:04:33.38 0.3 undecidable manual P 16 39.3273 50 0.2 70
Y1.T1756.EHN. 2023-01-16T07:04:33.84 0.1 undecidable manual P 63 42.624 50 0.15 94
IV.VISG.HHZ. 2023-01-16T07:04:32.57 0.1 undecidable manual P 336 37.1295 50 -0.27 93
IV.CRE.HHZ. 2023-01-16T07:04:32.75 0.3 undecidable manual P 138 39.3273 50 -0.42 67
IV.SFI.HNE. 2023-01-16T07:04:32.73 0.6 undecidable manual S 83 17.7711 118 0.23 48
IV.MOCL.EHZ. 2023-01-16T07:04:32.91 0.3 undecidable manual P 291 38.0286 50 -0.07 72
IV.SEI.HHZ. 2023-01-16T07:04:31.20 0.1 undecidable manual P 311 28.5492 50 -0.31 93
IV.LMD.HHZ. 2023-01-16T07:04:30.28 0.1 undecidable manual P 17 22.3554 113 -0.1 98
IV.RUFI.EHZ. 2023-01-16T07:04:30.50 0.3 undecidable manual S 241 10.6782 132 0.01 77
IV.SFI.HNE. 2023-01-16T07:04:29.48 0.1 undecidable manual P 83 17.7711 118 -0.06 100
IV.RUFI.EHZ. 2023-01-16T07:04:28.55 0.1 undecidable manual P 241 10.6782 132 0.17 99
IV.VITU.HHZ. 2023-01-16T07:04:23.79 3.0 undecidable manual Sn -6.87 0
OT.OT14.EHZ. 2023-01-16T07:04:06.22 3.0 positive manual Pn 0.38 0
IV.GUAR.HHZ. 2023-01-16T07:03:50.66 3.0 positive manual P -3.07 0
IV.SRES.HHZ. 2023-01-16T07:03:50.46 3.0 positive manual P -1.34 0
IV.CSP1.EHZ. 2023-01-16T07:03:45.06 3.0 undecidable manual S 2.12 0
IV.SSFR.HHZ. 2023-01-16T07:03:45.01 3.0 positive manual P -2.01 0
IV.FAGN.HHZ. 2023-01-16T07:03:43.62 3.0 negative manual P -1.16 0
IV.EL6.EHZ. 2023-01-16T07:03:39.84 3.0 undecidable manual P -2.53 0
IV.CIMA.HNZ. 2023-01-16T07:03:38.94 3.0 negative manual P -0.48 0
IV.TERO.HHZ. 2023-01-16T07:03:37.67 3.0 undecidable manual P 0.59 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RUFI.EHE. ML:1.6 0.0005875 0.44 AML other m 2023-01-16T07:04:30.55
IV.RUFI.EHN. ML:1.7 0.0006975 0.36 AML other m 2023-01-16T07:04:30.64
IV.LMD.HHE. ML:2.0 0.0007115 1.36 AML other m 2023-01-16T07:04:34.72
IV.LMD.HHN. ML:2.1 0.0008125 0.14 AML other m 2023-01-16T07:04:34.11
IV.SEI.HHE. ML:1.8 0.0003135 1.02 AML other m 2023-01-16T07:04:36.97
IV.SEI.HHN. ML:2.0 0.000494 0.48 AML other m 2023-01-16T07:04:37.37
IV.MOCL.EHE. ML:1.6 0.0001545 1.14 AML other m 2023-01-16T07:04:39.57
IV.VISG.HHE. ML:1.0 0.00003723008499999999 0.1792 AML other m 2023-01-16T07:04:39.09
IV.MOCL.EHN. ML:1.6 0.00013800000000000002 1.34 AML other m 2023-01-16T07:04:39.82
IV.CRMI.HHE. ML:1.4 0.00005657277999999999 0.2208 AML other m 2023-01-16T07:04:39.68
IV.VISG.HHN. ML:1.0 0.000036108395 0.1408 AML other m 2023-01-16T07:04:39.84
IV.BRIS.HHE. ML:1.4 0.0000809 1.66 AML other m 2023-01-16T07:04:40.00
IV.BRIS.HHN. ML:1.5 0.00010835 1.78 AML other m 2023-01-16T07:04:40.09
IV.MPPT.EHN. ML:1.8 0.00021250000000000002 1.16 AML other m 2023-01-16T07:04:40.26
IV.MPPT.EHE. ML:1.6 0.000113 1.26 AML other m 2023-01-16T07:04:40.84
IV.CRMI.HHN. ML:1.4 0.00006522232999999999 1.6384 AML other m 2023-01-16T07:04:53.14
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