Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 25-11-2022 and time 18:50:20 (UTC) in region 3 km SW Brisighella (RA)

A magnitude ML 2.1 earthquake occured in region: 3 km SW Brisighella (RA), on

  • 25-11-2022 18:50:20 (UTC)
  • 25-11-2022 19:50:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2000, 11.7420 at 20 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
Brisighella RA 3 7639 7639
Modigliana FC 6 4560 12199
Riolo Terme RA 9 5720 17919
Casola Valsenio RA 10 2617 20536
Tredozio FC 13 1212 21748
Castel Bolognese RA 14 9554 31302
Dovadola FC 15 1653 32955
Faenza RA 15 58541 91496
Casalfiumanese BO 15 3438 94934
Borgo Tossignano BO 15 3288 98222
Fontanelice BO 16 1943 100165
Castrocaro Terme e Terra del Sole FC 17 6426 106591
Marradi FI 17 3139 109730
Imola BO 17 69797 179527
Rocca San Casciano FC 17 1910 181437
Palazzuolo sul Senio FI 18 1154 182591
Castel del Rio BO 19 1246 183837
Portico e San Benedetto FC 20 756 184593
Solarolo RA 20 4488 189081
Dozza BO 20 6652 195733

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SW of Faenza (58541 inhabitants)
17 Km S of Imola (69797 inhabitants)
24 Km W of Forlì (117913 inhabitants)
41 Km W of Cesena (96758 inhabitants)
44 Km SW of Ravenna (159116 inhabitants)
46 Km SE of Bologna (386663 inhabitants)
62 Km NE of Firenze (382808 inhabitants)
63 Km NE of Prato (191150 inhabitants)
66 Km NE of Scandicci (50609 inhabitants)
68 Km W of Rimini (147750 inhabitants)
72 Km S of Ferrara (133155 inhabitants)
72 Km E of Pistoia (90315 inhabitants)
82 Km SE of Modena (184973 inhabitants)
82 Km N of Arezzo (99543 inhabitants)
94 Km SE of Carpi (70699 inhabitants)
97 Km S of Rovigo (51867 inhabitants)
99 Km W of Pesaro (94582 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 2.1 2022-11-25
18:50:20		 44.2003 11.7423 20 2024-03-01
15:28:26		 Bollettino Sismico Italiano INGV 118245671
Reviewed
Rev100 		ML 2.1 2022-11-25
18:50:20		 44.1982 11.7503 20 2022-11-25
18:59:17		 Sala Sismica INGV-Roma 112206261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-11-25 18:50:20 ± 0.19
Latitude 44.2003 ± 0.0090
Longitude 11.7423 ± 0.0088
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118245671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 923
Semi-minor axis of confidence ellipse (meter) 383
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 920.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 23
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) 0.98386
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 118245671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-09 17:35:11

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 112206261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-11-25 18:59:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2022-11-25T18:51:10.84 3.0 undecidable manual Sn -0.2 0
GU.CANO.HHZ. 2022-11-25T18:51:07.81 3.0 undecidable manual Pg 6.81 0
IV.CRE.HHZ. 2022-11-25T18:50:42.71 0.6 undecidable manual S 165 66.6777 100 1.31 30
IV.FRON.EHZ. 2022-11-25T18:50:39.49 0.3 undecidable manual P 134 109.2129 95 0.23 61
IV.MPAG.EHZ. 2022-11-25T18:50:38.33 0.6 undecidable manual P 128 103.0191 96 0 43
IV.FNVD.HHZ. 2022-11-25T18:50:37.54 0.6 undecidable manual S 266 49.4172 104 0.64 40
IV.OSSC.HHZ. 2022-11-25T18:50:36.23 0.3 undecidable manual P 208 84.9483 97 0.68 57
IV.RUFI.EHZ. 2022-11-25T18:50:35.65 0.6 undecidable manual S 205 44.3223 106 0.08 48
IV.PARC.HHZ. 2022-11-25T18:50:33.45 0.3 undecidable manual P 147 72.9714 99 -0.26 64
IV.SFI.EHZ. 2022-11-25T18:50:33.10 0.3 undecidable manual S 166 33.8439 112 0.17 72
IV.SEI.HHZ. 2022-11-25T18:50:33.10 0.3 undecidable manual S 242 34.6431 111 -0.02 73
Y1.T1756.HNE. 2022-11-25T18:50:33.65 0.6 undecidable manual S 118 32.6451 113 1.02 35
IV.CRE.HHZ. 2022-11-25T18:50:32.58 0.1 undecidable manual P 165 66.6777 100 -0.18 88
IV.VISG.HHZ. 2022-11-25T18:50:30.70 0.6 undecidable manual S 267 24.5532 121 0 50
IV.FNVD.HHZ. 2022-11-25T18:50:30.11 0.3 undecidable manual P 266 49.4172 104 -0.05 71
IV.RUFI.EHZ. 2022-11-25T18:50:29.11 0.1 undecidable manual P 205 44.3223 106 -0.28 90
IV.LMD.HHZ. 2022-11-25T18:50:28.40 0.6 undecidable manual S 192 13.875 140 -0.14 49
IV.BRIS.HHZ. 2022-11-25T18:50:27.40 0.6 undecidable manual S 36 3.2967 169 0.09 50
IV.SEI.HHZ. 2022-11-25T18:50:27.66 0.1 negative manual P 242 34.6431 111 -0.32 91
IV.MTRZ.HHZ. 2022-11-25T18:50:27.53 0.1 undecidable manual P 296 28.1496 117 0.46 89
Y1.T1756.HNE. 2022-11-25T18:50:27.66 0.1 undecidable manual P 118 32.6451 113 -0.04 97
IV.SFI.EHZ. 2022-11-25T18:50:27.57 0.1 positive manual P 166 33.8439 112 -0.3 92
IV.VISG.HHZ. 2022-11-25T18:50:26.36 0.1 positive manual P 267 24.5532 121 -0.22 95
IV.BRIS.HHZ. 2022-11-25T18:50:24.41 0.1 positive manual P 36 3.2967 169 -0.21 100
IV.LMD.HHZ. 2022-11-25T18:50:24.96 0.1 positive manual P 192 13.875 140 -0.37 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHN. ML:2.2 0.00131 0.28 AML other m 2022-11-25T18:50:27.79
IV.BRIS.HNN. ML:2.6 0.003125 0.26 AML other m 2022-11-25T18:50:27.78
IV.BRIS.HHE. ML:2.1 0.0010015 0.18 AML other m 2022-11-25T18:50:27.62
IV.BRIS.HNE. ML:2.4 0.002345 0.18 AML other m 2022-11-25T18:50:27.71
IV.LMD.HHN. ML:2.4 0.001695 0.24 AML other m 2022-11-25T18:50:28.59
IV.LMD.HHE. ML:2.3 0.001435 0.42 AML other m 2022-11-25T18:50:28.73
IV.VISG.HHN. ML:2.0 0.00043099999999999996 0.88 AML other m 2022-11-25T18:50:31.17
IV.VISG.HHE. ML:1.9 0.00034950000000000004 0.2 AML other m 2022-11-25T18:50:31.16
IV.SFI.EHE. ML:2.0 0.00036150000000000006 0.3 AML other m 2022-11-25T18:50:33.47
IV.SFI.HNE. ML:2.0 0.0003355 0.26 AML other m 2022-11-25T18:50:33.47
IV.SFI.HNN. ML:2.1 0.0004290000000000001 0.78 AML other m 2022-11-25T18:50:33.84
IV.SFI.EHN. ML:2.0 0.000375 0.78 AML other m 2022-11-25T18:50:33.84
IV.SEI.HHN. ML:2.4 0.0008534999999999999 1.68 AML other m 2022-11-25T18:50:35.86
IV.SEI.HHE. ML:2.1 0.000461 1.12 AML other m 2022-11-25T18:50:35.12
IV.MTRZ.HNN. ML:2.3 0.0009815 0.28 AML other m 2022-11-25T18:50:35.08
IV.MTRZ.HHN. ML:2.4 0.001009 0.28 AML other m 2022-11-25T18:50:35.08
IV.MTRZ.HHE. ML:2.3 0.0008025 0.46 AML other m 2022-11-25T18:50:36.10
IV.MTRZ.HNE. ML:2.2 0.0007484999999999999 0.44 AML other m 2022-11-25T18:50:36.33
IV.RUFI.EHE. ML:1.9 0.000208 0.36 AML other m 2022-11-25T18:50:36.65
IV.RUFI.EHN. ML:1.6 0.00011660000000000002 0.34 AML other m 2022-11-25T18:50:37.93
IV.FNVD.HHE. ML:2.0 0.0002685 0.6 AML other m 2022-11-25T18:50:38.51
IV.FNVD.HHN. ML:1.9 0.0001975 0.6 AML other m 2022-11-25T18:50:39.12
IV.CRE.HHN. ML:2.0 0.000175 0.28 AML other m 2022-11-25T18:50:43.25
IV.CRE.HHE. ML:1.6 0.00007439999999999999 0.3 AML other m 2022-11-25T18:50:43.59
IV.PARC.HHE. ML:1.4 0.00003845 1.36 AML other m 2022-11-25T18:50:48.89
IV.PARC.HHN. ML:1.4 0.00004015 0.76 AML other m 2022-11-25T18:50:53.64
IV.FRON.EHN. ML:1.8 0.00004895 0.38 AML other m 2022-11-25T18:50:59.73
IV.FRON.EHE. ML:1.7 0.00003945 1.54 AML other m 2022-11-25T18:51:00.91
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