Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 25-04-2020 and time 21:21:57 (UTC) in region 2 km W Bagnacavallo (RA)

A magnitude ML 2.1 earthquake occured in region: 2 km W Bagnacavallo (RA), on

  • 25-04-2020 21:21:57 (UTC)
  • 25-04-2020 23:21:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4170, 11.9480 at 28 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
Bagnacavallo RA 2 16739 16739
Lugo RA 3 32390 49129
Cotignola RA 4 7474 56603
Fusignano RA 6 8222 64825
Sant'Agata sul Santerno RA 7 2862 67687
Russi RA 8 12247 79934
Massa Lombarda RA 10 10653 90587
Bagnara di Romagna RA 10 2429 93016
Solarolo RA 10 4488 97504
Mordano BO 11 4760 102264
Alfonsine RA 13 12038 114302
Conselice RA 14 9856 124158
Faenza RA 15 58541 182699
Castel Bolognese RA 16 9554 192253
Imola BO 20 69797 262050

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Faenza (58541 inhabitants)
20 Km E of Imola (69797 inhabitants)
20 Km W of Ravenna (159116 inhabitants)
23 Km NW of Forlì (117913 inhabitants)
39 Km NW of Cesena (96758 inhabitants)
49 Km E of Bologna (386663 inhabitants)
53 Km SE of Ferrara (133155 inhabitants)
63 Km NW of Rimini (147750 inhabitants)
74 Km S of Rovigo (51867 inhabitants)
85 Km E of Modena (184973 inhabitants)
90 Km NE of Prato (191150 inhabitants)
91 Km NE of Firenze (382808 inhabitants)
93 Km E of Carpi (70699 inhabitants)
95 Km NE of Scandicci (50609 inhabitants)
96 Km NW of Pesaro (94582 inhabitants)
98 Km NE of Pistoia (90315 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 2020-04-25
21:21:57		 44.4172 11.9477 28 2020-07-18
21:08:38		 Bollettino Sismico Italiano INGV 79871241
Reviewed
Rev100 		ML 2.1 2020-04-25
21:21:56		 44.4337 11.9078 31 2020-04-25
21:41:01		 Sala Sismica INGV-Roma 78584211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-25 21:21:57 ± 0.22
Latitude 44.4172 ± 0.0081
Longitude 11.9477 ± 0.0176
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79871241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1206
Semi-minor axis of confidence ellipse (meter) 823
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 104
Circular confidence region, given by single value of horizontal uncertainty (meter) 1210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 28
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) 0.12591
Epicentral distance of station farthest from the epicenter (degree) 1.08548
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 79871241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-03 22:49:33

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 78584211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-25 21:41:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ZOVE.EHE. 2020-04-25T21:22:33.33 3.0 undecidable manual S 343 120.4905 54 1.08 0
IV.RUFI.EHN. 2020-04-25T21:22:20.69 0.6 undecidable manual S 209 73.0713 105 0.7 38
IV.ASQU.HHE. 2020-04-25T21:22:19.51 1.0 undecidable manual S 190 69.9744 106 0.33 22
IV.RONT.HHZ. 2020-04-25T21:22:18.04 1.0 undecidable manual S 221 62.2932 108 0.82 18
IV.RINC.HHE. 2020-04-25T21:22:18.36 0.6 undecidable manual S 205 64.7907 107 0.5 42
IV.ZOVE.EHE. 2020-04-25T21:22:18.02 1.0 undecidable manual P 343 120.4905 54 0.5 19
IV.SEI.HHN. 2020-04-25T21:22:17.79 0.6 undecidable manual S 230 61.7937 108 0.71 38
IV.SFI.EHZ. 2020-04-25T21:22:16.03 0.3 undecidable manual S 188 57.3981 110 0.05 70
IV.LMD.HHZ. 2020-04-25T21:22:12.05 0.3 undecidable manual S 207 42.2244 117 -0.22 69
IV.FIU.EHN. 2020-04-25T21:22:12.60 1.0 undecidable manual S 305 43.7229 117 -0.03 24
IV.ASQU.HHE. 2020-04-25T21:22:10.01 0.1 undecidable manual P 190 69.9744 106 0.03 92
IV.RUFI.EHN. 2020-04-25T21:22:10.32 0.3 undecidable manual P 209 73.0713 105 -0.12 67
IV.RINC.HHE. 2020-04-25T21:22:09.18 0.1 undecidable manual P 205 64.7907 107 -0.04 92
IV.CMPO.HNE. 2020-04-25T21:22:09.24 3.0 undecidable manual S 328 21.3675 138 1.43 0
IV.BRSN.EHZ. 2020-04-25T21:22:08.34 0.3 undecidable manual S 144 18.0708 143 1.07 55
IV.BRIS.HHZ. 2020-04-25T21:22:08.28 0.3 undecidable manual S 214 25.752 132 -0.36 70
IV.SEI.HHN. 2020-04-25T21:22:08.78 0.3 undecidable manual P 230 61.7937 108 0.01 70
IV.RONT.HHZ. 2020-04-25T21:22:08.91 0.1 undecidable manual P 221 62.2932 108 0.05 92
IV.IMOL.EHZ. 2020-04-25T21:22:07.43 0.3 undecidable manual S 249 17.4714 144 0.26 71
IV.FIU.EHN. 2020-04-25T21:22:07.18 1.0 undecidable manual P 305 43.7229 117 0.98 18
IV.SFI.EHZ. 2020-04-25T21:22:07.80 0.1 undecidable manual P 188 57.3981 110 -0.34 87
IV.VISG.HHE. 2020-04-25T21:22:06.64 0.1 undecidable manual P 238 48.0186 114 -0.15 93
IT.FAZ.HNZ. 2020-04-25T21:22:06.10 0.6 undecidable manual S 199 13.9749 150 -0.56 45
IV.LMD.HHZ. 2020-04-25T21:22:05.43 0.1 undecidable manual P 207 42.2244 117 -0.56 85
IV.CMPO.HNE. 2020-04-25T21:22:03.75 0.6 undecidable manual P 328 21.3675 138 0.33 47
IV.FAEN.HNZ. 2020-04-25T21:22:03.28 0.6 undecidable manual P 202 15.2736 148 0.43 47
IV.BRSN.EHZ. 2020-04-25T21:22:03.20 0.1 undecidable manual P 144 18.0708 143 0.1 100
IV.BRIS.HHZ. 2020-04-25T21:22:03.60 0.1 undecidable manual P 214 25.752 132 -0.29 94
IT.FAZ.HNZ. 2020-04-25T21:22:02.24 0.1 undecidable manual P 199 13.9749 150 -0.51 91
IV.IMOL.EHZ. 2020-04-25T21:22:02.98 0.1 undecidable manual P 249 17.4714 144 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IMOL.HNE. ML:2.5 0.001372319 0.3072 AML other m 2020-04-25T21:22:08.08
IV.IMOL.HNN. ML:2.4 0.0011371353 0.2432 AML other m 2020-04-25T21:22:08.12
IV.BRSN.EHE. ML:2.2 0.0006541848 0.4608 AML other m 2020-04-25T21:22:08.84
IV.BRSN.EHN. ML:2.0 0.0005254062499999999 0.2816 AML other m 2020-04-25T21:22:09.82
IV.BRIS.HHN. ML:1.6 0.00016571455000000002 0.2432 AML other m 2020-04-25T21:22:10.64
IV.BRIS.HHE. ML:1.6 0.0001722448 0.32 AML other m 2020-04-25T21:22:11.07
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download