Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-01-2018 and time 21:24:10 (UTC) in region 2 km SE Fontanelice (BO)

A magnitude ML 1.2 earthquake occured in region: 2 km SE Fontanelice (BO), on

  • 28-01-2018 21:24:10 (UTC)
  • 28-01-2018 22:24:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2390, 11.5700 at 25 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
Fontanelice BO 2 1943 1943
Casola Valsenio RA 5 2617 4560
Borgo Tossignano BO 5 3288 7848
Castel del Rio BO 6 1246 9094
Casalfiumanese BO 8 3438 12532
Riolo Terme RA 13 5720 18252
Palazzuolo sul Senio FI 14 1154 19406
Dozza BO 14 6652 26058
Brisighella RA 16 7639 33697
Monterenzio BO 16 6035 39732
Imola BO 17 69797 109529
Castel San Pietro Terme BO 18 20811 130340
Marradi FI 18 3139 133479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Imola (69797 inhabitants)
26 Km W of Faenza (58541 inhabitants)
34 Km SE of Bologna (386663 inhabitants)
38 Km W of Forlì (117913 inhabitants)
54 Km W of Ravenna (159116 inhabitants)
55 Km W of Cesena (96758 inhabitants)
55 Km NE of Prato (191150 inhabitants)
58 Km NE of Firenze (382808 inhabitants)
62 Km NE of Scandicci (50609 inhabitants)
62 Km NE of Pistoia (90315 inhabitants)
67 Km S of Ferrara (133155 inhabitants)
68 Km SE of Modena (184973 inhabitants)
81 Km SE of Carpi (70699 inhabitants)
82 Km W of Rimini (147750 inhabitants)
89 Km N of Arezzo (99543 inhabitants)
90 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km S of Rovigo (51867 inhabitants)
96 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 1.2 2018-01-28
21:24:10		 44.2393 11.5703 25 2018-01-28
21:28:22		 Sala Sismica INGV-Roma 53516951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-28 21:24:10 ± 0.45
Latitude 44.2393 ± 0.0180
Longitude 11.5703 ± 0.0201
Depth (km) 25 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 53516951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1590
Semi-minor axis of confidence ellipse (meter) 1572
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 1590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.12770
Epicentral distance of station farthest from the epicenter (degree) 0.45865
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:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 53516951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-01-28 21:28:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHE. 2018-01-28T21:24:26.02 0.6 undecidable manual S 149 43.1235 114 0.78 41
IV.SEI.HHZ. 2018-01-28T21:24:21.04 0.6 undecidable manual S 219 26.5512 128 -0.37 49
IV.LMD.HHZ. 2018-01-28T21:24:20.14 0.6 undecidable manual S 149 20.9679 135 -0.16 52
IV.MTRZ.HHZ. 2018-01-28T21:24:20.03 0.6 undecidable manual S 305 14.1747 147 0.87 42
IV.MTCR.EHZ. 2018-01-28T21:24:20.03 0.6 undecidable manual P 243 50.9157 110 -0.07 50
IV.BRIS.HHZ. 2018-01-28T21:24:19.54 0.6 undecidable manual S 96 15.6732 144 0.15 52
IV.RUFI.EHE. 2018-01-28T21:24:19.84 0.1 undecidable manual P 186 44.8218 113 0.63 88
IV.SFI.EHE. 2018-01-28T21:24:18.82 0.1 undecidable manual P 149 43.1235 114 -0.17 100
IV.SEI.HHZ. 2018-01-28T21:24:16.01 1.0 negative manual P 219 26.5512 128 -0.77 22
IV.MTRZ.HHZ. 2018-01-28T21:24:15.41 0.3 positive manual P 305 14.1747 147 -0.07 80
IV.LMD.HHZ. 2018-01-28T21:24:15.63 0.3 undecidable manual P 149 20.9679 135 -0.5 73
IV.BRIS.HHZ. 2018-01-28T21:24:15.28 0.3 undecidable manual P 96 15.6732 144 -0.33 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.2 0.00008609999999999999 1.58 AML other m 2018-01-28T21:24:20.04
IV.BRIS.HHN. ML:1.2 0.00008510000000000001 0.92 AML other m 2018-01-28T21:24:20.09
IV.LMD.HHE. ML:0.9 0.0000335 0.2 AML other m 2018-01-28T21:24:20.96
IV.LMD.HHN. ML:1.2 0.000063 1.86 AML other m 2018-01-28T21:24:20.02
IV.MTRZ.HHN. ML:1.4 0.000134 0.34 AML other m 2018-01-28T21:24:21.54
IV.MTRZ.HHE. ML:1.5 0.0001555 0.32 AML other m 2018-01-28T21:24:21.84
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