Earthquake with magnitude of ML 2.0 on date 20-12-2020 and time 19:20:41 (Italy) in region 8 km N Cesena (FC)

A magnitude ML 2.0 earthquake occured in region: 8 km N Cesena (FC), on

  • 20-12-2020 18:20:41 (UTC)
  • 20-12-2020 19:20:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.211, 12.239 at 22 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
Cesena FC 8 96758 96758
Forlimpopoli FC 9 13290 110048
Cervia RA 11 28940 138988
Bertinoro FC 11 11059 150047
Cesenatico FC 13 25796 175843
Gambettola FC 13 10660 186503
Montiano FC 15 1716 188219
Forlì FC 16 117913 306132
Gatteo FC 16 9068 315200
Longiano FC 17 7126 322326
Meldola FC 17 9970 332296
San Mauro Pascoli FC 18 11690 343986
Savignano sul Rubicone FC 18 17766 361752
Bellaria-Igea Marina RN 19 19519 381271
Roncofreddo FC 20 3386 384657

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km N of Cesena (96758 inhabitants)
16 Km E of Forlì (117913 inhabitants)
23 Km S of Ravenna (159116 inhabitants)
30 Km E of Faenza (58541 inhabitants)
31 Km NW of Rimini (147750 inhabitants)
45 Km E of Imola (69797 inhabitants)
63 Km NW of Pesaro (94582 inhabitants)
75 Km NW of Fano (60888 inhabitants)
78 Km E of Bologna (386663 inhabitants)
85 Km SE of Ferrara (133155 inhabitants)
88 Km NE of Arezzo (99543 inhabitants)
93 Km NE of Firenze (382808 inhabitants)
98 Km E of Prato (191150 inhabitants)
98 Km NE of Scandicci (50609 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
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.0 2020-12-20
18:20:41
44.2108 12.2393 22 2021-02-26
14:56:17
Bollettino Sismico Italiano INGV 86774221
Reviewed
Rev100
ML 2.0 2020-12-20
18:20:40
44.2123 12.27 27 2020-12-20
18:28:47
Sala Sismica INGV-Roma 85584611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-20 18:20:41 ± 0.14
Latitude 44.2108 ± 0.0099
Longitude 12.2393 ± 0.0100
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86774221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 989
Semi-minor axis of confidence ellipse (meter) 666
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 990
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.1358
Epicentral distance of station farthest from the epicenter (degree) 2.33104
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 86774221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-16 10:47:07

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 85584611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-20 18:28:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SI.KOSI.HHZ. 2020-12-20T18:21:19.90 0.6 undecidable manual P 345 2.331 54 0.39 19
IV.FREG.EHE. 2020-12-20T18:21:13.06 0.6 undecidable manual P 2 1.7995 54 0.88 24
ST.VARA.EHZ. 2020-12-20T18:21:12.99 0.3 undecidable manual P 330 1.8724 54 -0.19 44
OX.VARN.HNN. 2020-12-20T18:21:11.35 0.6 undecidable manual P 357 1.7825 54 -0.59 28
OX.MARN.HNN. 2020-12-20T18:21:08.97 0.3 undecidable manual P 333 1.6008 54 -0.47 49
IV.CSP1.EHZ. 2020-12-20T18:21:06.22 0.3 undecidable manual P 148 1.3184 54 0.69 52
IV.MPAG.EHZ. 2020-12-20T18:21:06.51 0.6 undecidable manual S 147 0.6916 100 1.63 25
IV.FDMO.HHZ. 2020-12-20T18:21:06.45 0.3 undecidable manual P 152 1.3247 54 0.84 48
IV.CRTC.HNE. 2020-12-20T18:21:04.83 0.6 undecidable manual S 133 0.6403 101 1.45 28
IV.CRE.HHZ. 2020-12-20T18:21:03.84 0.6 undecidable manual S 199 0.6268 101 0.85 37
IV.EL6.EHZ. 2020-12-20T18:21:02.00 0.3 undecidable manual P 144 1.0783 96 0.35 61
IV.VISG.HHZ. 2020-12-20T18:21:02.06 0.6 undecidable manual S 268 0.5774 102 0.51 43
IV.RINC.HHN. 2020-12-20T18:21:01.44 0.6 undecidable manual S 235 0.5576 102 0.44 44
IV.PARC.HHZ. 2020-12-20T18:21:01.58 0.6 undecidable manual S 180 0.5621 102 0.47 44
IV.ATFO.HHZ. 2020-12-20T18:20:58.13 0.3 undecidable manual P 164 0.8768 97 -0.09 67
IV.ARVD.HHZ. 2020-12-20T18:20:58.12 0.3 undecidable manual P 144 0.8741 97 -0.05 67
IV.LMD.HHZ. 2020-12-20T18:20:57.00 0.3 undecidable manual S 251 0.4038 108 0.4 68
IV.COR1.EHZ. 2020-12-20T18:20:57.49 0.3 undecidable manual P 136 0.7968 98 0.63 60
IV.SFI.EHZ. 2020-12-20T18:20:57.12 0.6 undecidable manual S 223 0.4155 108 0.19 48
IV.CPGN.EHZ. 2020-12-20T18:20:57.46 0.6 undecidable manual S 172 0.4137 108 0.6 44
IV.BRIS.HHZ. 2020-12-20T18:20:55.40 0.6 undecidable manual S 272 0.339 112 0.62 43
IV.MTRZ.HNN. 2020-12-20T18:20:54.16 0.3 undecidable manual P 280 0.5918 102 0.75 58
IV.BADI.EHZ. 2020-12-20T18:20:54.52 0.3 undecidable manual P 180 0.7006 100 -0.71 58
IV.CRTC.HNE. 2020-12-20T18:20:54.58 0.3 undecidable manual P 133 0.6403 101 0.37 67
IV.SEI.HHZ. 2020-12-20T18:20:54.73 0.3 undecidable manual P 256 0.6511 100 0.33 66
IV.MPAG.EHZ. 2020-12-20T18:20:54.49 0.3 undecidable manual P 147 0.6916 100 -0.59 61
IV.NARO.HHZ. 2020-12-20T18:20:53.88 0.3 undecidable manual P 158 0.6484 100 -0.47 65
IV.RUFI.EHZ. 2020-12-20T18:20:53.70 0.3 undecidable manual P 235 0.643 101 -0.56 63
IV.CRE.HHZ. 2020-12-20T18:20:53.41 0.1 undecidable manual P 199 0.6268 101 -0.58 84
IV.PARC.HHZ. 2020-12-20T18:20:52.20 0.1 positive manual P 180 0.5621 102 -0.7 81
IV.RINC.HHN. 2020-12-20T18:20:52.13 0.3 undecidable manual P 235 0.5576 102 -0.7 61
IV.VISG.HHZ. 2020-12-20T18:20:52.76 0.3 undecidable manual P 268 0.5774 102 -0.4 67
IV.ASQU.HHZ. 2020-12-20T18:20:51.66 0.3 undecidable manual P 218 0.5252 103 -0.64 63
IV.CPGN.EHZ. 2020-12-20T18:20:50.45 0.1 positive manual P 172 0.4137 108 0 100
IV.BRSN.EHZ. 2020-12-20T18:20:50.57 0.3 undecidable manual S 303 0.1358 141 0.73 64
IV.IMOL.EHZ. 2020-12-20T18:20:50.61 0.3 undecidable manual P 293 0.3849 109 0.62 64
IV.BLLA.EHZ. 2020-12-20T18:20:50.80 0.3 undecidable manual S 112 0.179 132 0.06 78
IV.LMD.HHZ. 2020-12-20T18:20:49.60 0.3 undecidable manual P 251 0.4038 108 -0.69 63
IV.SFI.EHZ. 2020-12-20T18:20:49.65 0.3 undecidable manual P 223 0.4155 108 -0.84 59
IV.BRIS.HHZ. 2020-12-20T18:20:49.04 0.3 undecidable manual P 272 0.339 112 -0.21 74
IV.RSM2.HHE. 2020-12-20T18:20:48.60 0.3 undecidable manual P 151 0.3103 115 -0.2 73
IV.BLLA.EHZ. 2020-12-20T18:20:46.17 0.3 undecidable manual P 112 0.179 132 -0.74 64
IV.BRSN.EHZ. 2020-12-20T18:20:45.95 0.3 undecidable manual P 303 0.1358 141 -0.44 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BLLA.EHE. ML:2.4 0.0013245 0.38 AML other m 2020-12-20T18:20:51.72
IV.BRSN.HNN. ML:2.8 0.003535 0.96 AML other m 2020-12-20T18:20:51.36
IV.BRSN.EHN. ML:2.8 0.003475 0.96 AML other m 2020-12-20T18:20:51.36
IV.BLLA.EHN. ML:2.3 0.001135 1.48 AML other m 2020-12-20T18:20:52.01
IV.BRSN.EHE. ML:2.7 0.00304 0.68 AML other m 2020-12-20T18:20:53.47
IV.BRSN.HNE. ML:2.8 0.00345 0.68 AML other m 2020-12-20T18:20:53.48
IV.BRIS.HHN. ML:2 0.000329 1.44 AML other m 2020-12-20T18:20:56.83
IV.BRIS.HHE. ML:1.9 0.000281 1.46 AML other m 2020-12-20T18:20:57.03
IV.SFI.EHN. ML:1.8 0.000186 0.84 AML other m 2020-12-20T18:20:58.05
IV.SFI.EHE. ML:1.9 0.000207 0.26 AML other m 2020-12-20T18:20:58.51
IV.CPGN.EHN. ML:2.1 0.0003535 0.86 AML other m 2020-12-20T18:20:59.15
IV.CPGN.EHE. ML:2 0.0002425 0.56 AML other m 2020-12-20T18:20:59.62
IV.ASQU.HHN. ML:1.9 0.000158 1 AML other m 2020-12-20T18:21:02.65
IV.PARC.HHE. ML:1.7 8.335E-5 0.32 AML other m 2020-12-20T18:21:02.35
IV.PARC.HHN. ML:1.7 9.545E-5 0.22 AML other m 2020-12-20T18:21:02.52
IV.ASQU.HHE. ML:1.8 0.000117 0.22 AML other m 2020-12-20T18:21:02.52
IV.SEI.HHN. ML:2.2 0.0002175 0.42 AML other m 2020-12-20T18:21:08.80
IV.MPAG.EHN. ML:1.9 0.000107 0.36 AML other m 2020-12-20T18:21:08.68
IV.SEI.HHE. ML:2.1 0.000174 1.56 AML other m 2020-12-20T18:21:09.13
IV.CRE.HHN. ML:1.9 0.0001312 1.56 AML other m 2020-12-20T18:21:09.08
IV.NARO.HHN. ML:1.8 8.34E-5 0.46 AML other m 2020-12-20T18:21:10.57
IV.CRE.HHE. ML:1.7 8.29E-5 0.68 AML other m 2020-12-20T18:21:10.02
IV.NARO.HHE. ML:1.6 6.65E-5 0.48 AML other m 2020-12-20T18:21:10.44
IV.MPAG.EHE. ML:1.8 9.385E-5 0.24 AML other m 2020-12-20T18:21:11.65
IV.BADI.EHN. ML:2.2 0.000232 1.2 AML other m 2020-12-20T18:21:14.10
IV.BADI.EHE. ML:2 0.000138 0.52 AML other m 2020-12-20T18:21:15.08
IV.ATFO.HHE. ML:2 9.14E-5 0.58 AML other m 2020-12-20T18:21:16.42
IV.ATFO.HHN. ML:1.8 7.035E-5 0.78 AML other m 2020-12-20T18:21:18.23
IV.EL6.EHE. ML:2.3 0.000155 1.04 AML other m 2020-12-20T18:21:25.19
IV.EL6.EHN. ML:2.2 0.00012245 0.4 AML other m 2020-12-20T18:21:25.85
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