Earthquake with magnitude of ML 1.1 on date 08-01-2023 and time 22:35:15 (UTC) in region 7 km W Palazzuolo sul Senio (FI)

A magnitude ML 1.1 earthquake occured in region: 7 km W Palazzuolo sul Senio (FI), on

  • 08-01-2023 22:35:15 (UTC)
  • 08-01-2023 23:35:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0990, 11.4650 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Palazzuolo sul Senio FI 7 1154 1154
Firenzuola FI 7 4726 5880
Marradi FI 12 3139 9019
Castel del Rio BO 13 1246 10265
Borgo San Lorenzo FI 17 18211 28476
Monghidoro BO 18 3749 32225
Vicchio FI 18 8044 40269
Scarperia e San Piero FI 19 12217 52486
Casola Valsenio RA 19 2617 55103
Fontanelice BO 19 1943 57046

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Imola (69797 inhabitants)
38 Km NE of Prato (191150 inhabitants)
39 Km SW of Faenza (58541 inhabitants)
40 Km NE of Firenze (382808 inhabitants)
44 Km NE of Scandicci (50609 inhabitants)
45 Km S of Bologna (386663 inhabitants)
47 Km E of Pistoia (90315 inhabitants)
48 Km W of Forlì (117913 inhabitants)
62 Km W of Cesena (96758 inhabitants)
69 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
78 Km NW of Arezzo (99543 inhabitants)
82 Km E of Lucca (89046 inhabitants)
83 Km S of Ferrara (133155 inhabitants)
87 Km N of Siena (53903 inhabitants)
88 Km W of Rimini (147750 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
95 Km E of Pisa (89158 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 1.1 2023-01-08
22:35:15
44.0987 11.4652 9 2024-03-01
17:17:55
Bollettino Sismico Italiano INGV 114431341
Reviewed
Rev100
ML 0.9 2023-01-08
22:35:15
44.0958 11.4653 9 2023-01-08
22:53:14
Sala Sismica INGV-Roma 113406481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-08 22:35:15 ± 0.1
Latitude 44.0987 ± 0.0072
Longitude 11.4652 ± 0.0075
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114431341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 778
Semi-minor axis of confidence ellipse (meter) 489
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
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) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 114431341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-18 11:05:11

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 113406481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-08 22:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRIS.HHZ. 2023-01-08T22:35:26.04 0.3 undecidable manual S 60 27.75 108 0.79 59
IV.RUFI.EHZ. 2023-01-08T22:35:25.49 0.6 undecidable manual S 173 29.1486 107 -0.22 48
IV.MOCL.EHZ. 2023-01-08T22:35:24.42 0.3 undecidable manual S 245 24.9528 110 0.09 72
IV.SFI.EHZ. 2023-01-08T22:35:22.16 0.6 undecidable manual P 125 37.3293 50 -0.38 46
IV.LMD.HHZ. 2023-01-08T22:35:22.69 0.3 undecidable manual S 97 19.4694 115 0.12 75
IV.BRIS.HHZ. 2023-01-08T22:35:21.01 0.3 undecidable manual P 60 27.75 108 0.04 73
IV.RUFI.EHZ. 2023-01-08T22:35:21.10 0.3 undecidable manual P 173 29.1486 107 -0.13 73
IV.MOCL.EHZ. 2023-01-08T22:35:20.58 0.3 undecidable manual P 245 24.9528 110 0.14 71
IV.VISG.HHZ. 2023-01-08T22:35:19.49 0.3 undecidable manual S 346 10.2786 131 -0.4 69
IV.SEI.HHZ. 2023-01-08T22:35:19.91 0.3 undecidable manual S 240 9.7791 133 0.14 75
IV.LMD.HHZ. 2023-01-08T22:35:19.32 0.3 undecidable manual P 97 19.4694 115 -0.09 73
IV.SEI.HHZ. 2023-01-08T22:35:17.97 0.1 undecidable manual P 240 9.7791 133 0.17 99
IV.VISG.HHZ. 2023-01-08T22:35:17.81 0.1 undecidable manual P 346 10.2786 131 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:0.9 0.00009570000000000001 0.14 AML other m 2023-01-08T22:35:19.90
IV.SEI.HHE. ML:1.4 0.0003115 0.2 AML other m 2023-01-08T22:35:20.25
IV.SEI.HHN. ML:1.7 0.0006861024999999999 0.1664 AML other m 2023-01-08T22:35:20.27
IV.VISG.HHN. ML:0.7 0.00007092306 0.0768 AML other m 2023-01-08T22:35:20.33
IV.BRIS.HNN. ML:1.5 0.00015647785 0.7296 AML other m 2023-01-08T22:35:21.18
IV.SFI.HNE. ML:1.6 0.00014504955 1.216 AML other m 2023-01-08T22:35:21.38
IV.RUFI.EHE. ML:1.0 0.000052889005 0.9024 AML other m 2023-01-08T22:35:22.69
IV.LMD.HHN. ML:0.6 0.000035129419 0.0768 AML other m 2023-01-08T22:35:23.37
IV.LMD.HHE. ML:0.7 0.000046383605 3.8016 AML other m 2023-01-08T22:35:23.61
IV.SFI.EHN. ML:0.9 0.000029785275 0.256 AML other m 2023-01-08T22:35:25.68
IV.BRIS.HHN. ML:0.6 0.00002119569 1.9584 AML other m 2023-01-08T22:35:26.21
IV.SFI.EHE. ML:1.4 0.00008450582 0.4096 AML other m 2023-01-08T22:35:27.47
IV.BRIS.HNE. ML:1.4 0.00014870795 0.576 AML other m 2023-01-08T22:35:30.04
IV.RUFI.EHN. ML:1.0 0.000055359355 0.0224 AML other m 2023-01-08T22:35:32.71
IV.BRIS.HHE. ML:0.8 0.000030600000000000005 1.58 AML other m 2023-01-08T22:35:34.18
IV.SFI.HNN. ML:1.6 0.000141422535 1.2704 AML other m 2023-01-08T22:35:37.16
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download