Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 16-02-2023 and time 06:55:50 (UTC) in region 7 km NW Fontanelice (BO)

A magnitude ML 1.9 earthquake occured in region: 7 km NW Fontanelice (BO), on

  • 16-02-2023 06:55:50 (UTC)
  • 16-02-2023 07:55:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3000, 11.4990 at 25 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.

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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 7 1943 1943
Borgo Tossignano BO 8 3288 5231
Monterenzio BO 8 6035 11266
Casalfiumanese BO 9 3438 14704
Castel del Rio BO 10 1246 15950
Dozza BO 12 6652 22602
Casola Valsenio RA 13 2617 25219
Castel San Pietro Terme BO 13 20811 46030
Loiano BO 14 4294 50324
Pianoro BO 16 17460 67784
Ozzano dell'Emilia BO 16 13596 81380
Monghidoro BO 17 3749 85129
Riolo Terme RA 18 5720 90849
Monzuno BO 18 6328 97177
Imola BO 18 69797 166974

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km W of Imola (69797 inhabitants)
25 Km SE of Bologna (386663 inhabitants)
31 Km W of Faenza (58541 inhabitants)
44 Km W of Forlì (117913 inhabitants)
56 Km NE of Prato (191150 inhabitants)
57 Km W of Ravenna (159116 inhabitants)
60 Km SE of Modena (184973 inhabitants)
61 Km S of Ferrara (133155 inhabitants)
62 Km NE of Pistoia (90315 inhabitants)
62 Km W of Cesena (96758 inhabitants)
62 Km NE of Firenze (382808 inhabitants)
65 Km NE of Scandicci (50609 inhabitants)
73 Km SE of Carpi (70699 inhabitants)
82 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km S of Rovigo (51867 inhabitants)
89 Km W of Rimini (147750 inhabitants)
94 Km NE of Lucca (89046 inhabitants)
98 Km NW of Arezzo (99543 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 1.9 2023-02-16
06:55:50		 44.2995 11.4988 25 2024-03-01
17:17:56		 Bollettino Sismico Italiano INGV 114698471
Reviewed
Rev100 		ML 2.0 2023-02-16
06:55:50		 44.3117 11.4908 23 2023-02-16
07:09:06		 Sala Sismica INGV-Roma 114477821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-16 06:55:50 ± 0.24
Latitude 44.2995 ± 0.0090
Longitude 11.4988 ± 0.0101
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114698471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 971
Semi-minor axis of confidence ellipse (meter) 584
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75453
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 114477821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-16 07:09:06

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 114698471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-10-30 11:13:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VENT.EHZ. 2023-02-16T06:57:43.22 3.0 undecidable manual Sg 8.57 0
IV.GATE.HHZ. 2023-02-16T06:57:35.21 3.0 undecidable manual Sn 0.99 0
IV.LRP.EHZ. 2023-02-16T06:57:24.93 3.0 undecidable manual Sg 7.69 0
IV.MCRV.HHZ. 2023-02-16T06:57:08.55 3.0 undecidable manual Pg 9.57 0
CR.STON.BHZ. 2023-02-16T06:57:07.06 3.0 undecidable manual Pn 3.55 0
CH.FUORN.HHZ. 2023-02-16T06:57:06.85 3.0 undecidable manual Sg 0.16 0
IV.MMO1.EHZ. 2023-02-16T06:56:48.93 3.0 undecidable manual Sn -0.92 0
IV.VARA.EHZ. 2023-02-16T06:56:37.48 3.0 undecidable manual P 0
IV.CRMI.HHZ. 2023-02-16T06:56:12.74 0.6 undecidable manual S 217 69.5748 104 0.53 42
IV.ATMI.HHZ. 2023-02-16T06:56:10.16 3.0 undecidable manual P -2.95 0
IV.SFI.EHZ. 2023-02-16T06:56:08.22 0.6 undecidable manual S 148 51.8037 110 0.55 42
IV.MPPT.EHZ. 2023-02-16T06:56:07.62 0.3 undecidable manual S 221 50.0166 110 0.41 67
IV.CRE.HHZ. 2023-02-16T06:56:05.84 0.3 undecidable manual P 154 83.7495 101 0.59 59
IV.BOSL.HHZ. 2023-02-16T06:56:05.60 0.6 undecidable manual S 194 42.0246 115 0.34 46
IV.MOCL.EHZ. 2023-02-16T06:56:05.04 0.3 undecidable manual S 218 41.3253 115 -0.04 73
IV.VMGN.HHN. 2023-02-16T06:56:04.22 0.6 undecidable manual S 176 38.3283 117 -0.15 48
IV.FNVD.HHZ. 2023-02-16T06:56:03.13 0.3 undecidable manual S 244 33.2445 121 -0.05 74
IV.CRMI.HHZ. 2023-02-16T06:56:03.82 0.3 undecidable manual P 217 69.5748 104 0.69 58
IV.LMD.HHZ. 2023-02-16T06:56:02.43 0.3 undecidable manual S 146 29.6481 125 0.05 75
IV.SEI.HHZ. 2023-02-16T06:56:01.56 0.3 undecidable manual S 202 29.4483 125 -0.75 61
IV.BRIS.HHZ. 2023-02-16T06:56:01.41 0.3 undecidable manual S 111 22.8549 133 0.46 69
IV.RUFI.EHE. 2023-02-16T06:56:00.52 0.3 undecidable manual P 179 51.2154 110 0.11 71
IV.MPPT.EHZ. 2023-02-16T06:56:00.26 0.3 undecidable manual P 221 50.0166 110 0.02 72
IV.SFI.EHZ. 2023-02-16T06:56:00.42 0.3 undecidable manual P 148 51.8037 110 -0.09 72
IV.MOCL.EHZ. 2023-02-16T06:55:59.02 0.3 undecidable manual P 218 41.3253 115 0.01 74
IV.ZCCA.HHZ. 2023-02-16T06:55:59.66 0.3 undecidable manual P 278 41.8248 115 0.58 64
IV.BOSL.HHZ. 2023-02-16T06:55:58.77 0.1 undecidable manual P 194 42.0246 115 -0.34 92
IV.MTRZ.HHZ. 2023-02-16T06:55:58.75 0.3 undecidable manual S 284 6.0939 165 0.17 76
IV.VMGN.HHN. 2023-02-16T06:55:58.14 0.1 undecidable manual P 176 38.3283 117 -0.46 90
IV.LMD.HHZ. 2023-02-16T06:55:57.11 0.1 positive manual P 146 29.6481 125 -0.34 94
IV.FNVD.HHZ. 2023-02-16T06:55:57.84 0.1 undecidable manual P 244 33.2445 121 -0.07 98
IV.SEI.HHZ. 2023-02-16T06:55:56.77 0.1 negative manual P 202 29.4483 125 -0.64 86
IV.BRIS.HHZ. 2023-02-16T06:55:56.49 0.1 undecidable manual P 111 22.8549 133 -0.13 100
IV.MTRZ.HHZ. 2023-02-16T06:55:55.03 0.1 positive manual P 284 6.0939 165 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRZ.HNN. ML:2.4 0.001595 0.62 AML other m 2023-02-16T06:55:59.66
IV.MTRZ.HHN. ML:2.4 0.001575 0.62 AML other m 2023-02-16T06:55:59.66
IV.MTRZ.HHE. ML:2.5 0.001815 0.8 AML other m 2023-02-16T06:56:00.91
IV.MTRZ.HNE. ML:2.5 0.0017749999999999999 1.34 AML other m 2023-02-16T06:56:01.91
IV.BRIS.HHE. ML:1.8 0.000273 1.56 AML other m 2023-02-16T06:56:01.07
IV.BRIS.HNE. ML:2.2 0.0007155 1.56 AML other m 2023-02-16T06:56:01.07
IV.BRIS.HHN. ML:1.8 0.000296 0.34 AML other m 2023-02-16T06:56:01.86
IV.BRIS.HNN. ML:2.2 0.0007415000000000001 0.36 AML other m 2023-02-16T06:56:01.87
IV.SEI.HHN. ML:2.4 0.0009904999999999998 0.48 AML other m 2023-02-16T06:56:02.22
IV.LMD.HHE. ML:2.0 0.00039449999999999994 1.3 AML other m 2023-02-16T06:56:02.11
IV.SEI.HHE. ML:2.1 0.0005365 0.52 AML other m 2023-02-16T06:56:03.43
IV.FNVD.HHN. ML:2.1 0.000462 0.42 AML other m 2023-02-16T06:56:03.62
IV.FNVD.HHE. ML:2.1 0.0004465 0.6 AML other m 2023-02-16T06:56:03.77
IV.LMD.HHN. ML:2.1 0.0004255 0.6 AML other m 2023-02-16T06:56:04.18
IV.BOSL.HHE. ML:1.2 0.0000378 0.74 AML other m 2023-02-16T06:56:06.29
IV.BOSL.HHN. ML:1.3 0.000047600000000000005 0.42 AML other m 2023-02-16T06:56:07.37
IV.MPPT.EHN. ML:1.8 0.000141 0.36 AML other m 2023-02-16T06:56:08.22
IV.SFI.EHN. ML:1.8 0.0001365 0.74 AML other m 2023-02-16T06:56:09.16
IV.MPPT.EHE. ML:1.6 0.00008340000000000001 1.5 AML other m 2023-02-16T06:56:09.99
IV.SFI.EHE. ML:1.7 0.000117 1.6 AML other m 2023-02-16T06:56:11.94
IV.CRMI.HHE. ML:1.4 0.0000393 0.68 AML other m 2023-02-16T06:56:13.43
IV.CRMI.HHN. ML:1.4 0.00003734999999999999 0.86 AML other m 2023-02-16T06:56:17.03
IV.CRE.HHN. ML:1.8 0.00007525 0.34 AML other m 2023-02-16T06:56:19.24
IV.CRE.HHE. ML:1.6 0.0000433 0.7 AML other m 2023-02-16T06:56:20.97
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
Waveforms Seismic signals in miniseed + resp format Download