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) 44.1980, 11.7500 at 20 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.

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 11 2617 20536
Tredozio FC 13 1212 21748
Dovadola FC 14 1653 23401
Castel Bolognese RA 14 9554 32955
Faenza RA 15 58541 91496
Casalfiumanese BO 15 3438 94934
Borgo Tossignano BO 16 3288 98222
Castrocaro Terme e Terra del Sole FC 16 6426 104648
Fontanelice BO 17 1943 106591
Rocca San Casciano FC 17 1910 108501
Marradi FI 17 3139 111640
Imola BO 18 69797 181437
Palazzuolo sul Senio FI 19 1154 182591
Portico e San Benedetto FC 19 756 183347
Solarolo RA 20 4488 187835
Castel del Rio BO 20 1246 189081

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SW of Faenza (58541 inhabitants)
18 Km S of Imola (69797 inhabitants)
23 Km W of Forlì (117913 inhabitants)
40 Km W of Cesena (96758 inhabitants)
43 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)
67 Km NE of Scandicci (50609 inhabitants)
67 Km W of Rimini (147750 inhabitants)
72 Km S of Ferrara (133155 inhabitants)
73 Km E of Pistoia (90315 inhabitants)
82 Km N of Arezzo (99543 inhabitants)
82 Km SE of Modena (184973 inhabitants)
95 Km SE of Carpi (70699 inhabitants)
97 Km S of Rovigo (51867 inhabitants)
98 Km W of Pesaro (94582 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.18
Latitude 44.1982 ± 0.0081
Longitude 11.7503 ± 0.0100
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 112206261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 915
Semi-minor axis of confidence ellipse (meter) 520
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59715
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

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 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.FRON.EHZ. 2022-11-25T18:50:56.01 3.0 undecidable manual S 1.42 0
IV.FRON.EHZ. 2022-11-25T18:50:41.66 3.0 undecidable manual P 1.69 0
IV.MPAG.EHZ. 2022-11-25T18:50:39.81 3.0 negative manual P 0.53 0
IV.FNVD.HHZ. 2022-11-25T18:50:37.61 0.3 undecidable manual S 266 0.4506 103 0.58 61
IV.RUFI.EHZ. 2022-11-25T18:50:36.00 0.6 undecidable manual S 206 0.3993 105 0.44 44
IV.OSSC.HHZ. 2022-11-25T18:50:34.83 3.0 undecidable manual P -1 0
IV.SFI.EHZ. 2022-11-25T18:50:33.10 0.3 undecidable manual S 167 0.3013 111 0.31 70
IV.PARC.HHZ. 2022-11-25T18:50:33.63 3.0 negative manual P -0.56 0
IV.SEI.HHZ. 2022-11-25T18:50:33.10 0.3 undecidable manual S 243 0.3157 110 -0.09 71
IV.CRE.HHZ. 2022-11-25T18:50:32.76 0.6 negative manual P 166 0.5971 99 0.07 46
IV.VISG.HHZ. 2022-11-25T18:50:30.70 0.6 undecidable manual S 268 0.2266 120 -0.09 49
IV.FNVD.HHZ. 2022-11-25T18:50:30.19 0.6 positive manual P 266 0.4506 103 -0.05 47
IV.RUFI.EHZ. 2022-11-25T18:50:29.22 0.6 undecidable manual P 206 0.3993 105 -0.17 46
IV.LMD.HHZ. 2022-11-25T18:50:28.40 0.6 undecidable manual S 194 0.1241 139 -0.04 49
Y1.T1756.HNE. 2022-11-25T18:50:27.80 0.1 undecidable manual P 119 0.2878 113 0.22 94
IV.BRIS.HHZ. 2022-11-25T18:50:27.40 0.6 undecidable manual S 24 0.0288 169 0.21 49
IV.SEI.HHZ. 2022-11-25T18:50:27.66 0.1 negative manual P 243 0.3157 110 -0.36 90
IV.SFI.EHZ. 2022-11-25T18:50:27.57 0.1 positive manual P 167 0.3013 111 -0.22 92
IV.MTRZ.HHZ. 2022-11-25T18:50:27.53 0.1 undecidable manual P 296 0.2599 116 0.4 89
IV.VISG.HHZ. 2022-11-25T18:50:26.36 0.1 positive manual P 268 0.2266 120 -0.28 94
IV.BRIS.HHZ. 2022-11-25T18:50:24.41 0.1 positive manual P 24 0.0288 169 -0.15 100
IV.LMD.HHZ. 2022-11-25T18:50:24.96 0.1 positive manual P 194 0.1241 139 -0.31 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HNN. ML:2.6 0.003125 0.26 AML other m 2022-11-25T18:50:27.78
IV.BRIS.HHN. ML:2.2 0.00131 0.28 AML other m 2022-11-25T18:50:27.79
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.HNE. ML:2.0 0.0003355 0.26 AML other m 2022-11-25T18:50:33.47
IV.SFI.EHE. ML:2.0 0.00036150000000000006 0.3 AML other m 2022-11-25T18:50:33.47
IV.SFI.EHN. ML:2.0 0.000375 0.78 AML other m 2022-11-25T18:50:33.84
IV.SFI.HNN. ML:2.1 0.0004290000000000001 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.HHN. ML:2.4 0.001009 0.28 AML other m 2022-11-25T18:50:35.08
IV.MTRZ.HNN. ML:2.4 0.0009815 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
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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