Earthquake with magnitude of ML 1.5 on date 31-03-2020 and time 23:18:59 (Italy) in region 4 km NW Borgo Tossignano (BO)

A magnitude ML 1.5 earthquake occured in region: 4 km NW Borgo Tossignano (BO), on

  • 31-03-2020 21:18:59 (UTC)
  • 31-03-2020 23:18:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.31, 11.57 at 26 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
Borgo Tossignano BO 4 3288 3288
Casalfiumanese BO 4 3438 6726
Fontanelice BO 6 1943 8669
Dozza BO 7 6652 15321
Castel San Pietro Terme BO 10 20811 36132
Casola Valsenio RA 11 2617 38749
Castel del Rio BO 12 1246 39995
Imola BO 13 69797 109792
Monterenzio BO 13 6035 115827
Riolo Terme RA 13 5720 121547
Castel Guelfo di Bologna BO 16 4455 126002
Ozzano dell'Emilia BO 17 13596 139598
Castel Bolognese RA 19 9554 149152
Brisighella RA 19 7639 156791
Medicina BO 19 16739 173530
Pianoro BO 20 17460 190990
Loiano BO 20 4294 195284

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km W of Imola (69797 inhabitants)
25 Km W of Faenza (58541 inhabitants)
27 Km SE of Bologna (386663 inhabitants)
39 Km W of Forlì (117913 inhabitants)
52 Km W of Ravenna (159116 inhabitants)
57 Km W of Cesena (96758 inhabitants)
59 Km S of Ferrara (133155 inhabitants)
61 Km NE of Prato (191150 inhabitants)
63 Km SE of Modena (184973 inhabitants)
65 Km NE of Firenze (382808 inhabitants)
67 Km NE of Pistoia (90315 inhabitants)
69 Km NE of Scandicci (50609 inhabitants)
75 Km SE of Carpi (70699 inhabitants)
84 Km W of Rimini (147750 inhabitants)
86 Km E of Reggio nell'Emilia (171345 inhabitants)
86 Km S of Rovigo (51867 inhabitants)
97 Km N of Arezzo (99543 inhabitants)
100 Km NE of Lucca (89046 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.5 2020-03-31
21:18:59
44.31 11.57 26 2020-03-31
21:33:09
Sala Sismica INGV-Roma 77736231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 21:18:59 ± 0.46
Latitude 44.31 ± 0.02
Longitude 11.57 ± 0.02
Depth (km) 26 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77736231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1536
Semi-minor axis of confidence ellipse (meter) 1339
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 1540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47484
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 77736231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 21:33:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHZ. 2020-03-31T21:19:45.56 3.0 undecidable manual Sg 10.67 0
IV.FRON.EHZ. 2020-03-31T21:19:37.61 3.0 undecidable manual Sg 12.42 0
IV.MCIV.CHZ. 2020-03-31T21:19:35.32 3.0 undecidable manual Sg 0.55 0
IV.CESI.HHZ. 2020-03-31T21:19:28.16 3.0 undecidable manual Sn -3.8 0
IV.ZONE.HHZ. 2020-03-31T21:19:21.06 3.0 undecidable manual Pn 0.22 0
IV.CPGN.EHZ. 2020-03-31T21:19:21.98 3.0 undecidable manual Sn -0.28 0
IV.RUFI.EHE. 2020-03-31T21:19:17.75 0.3 undecidable manual S 185 0.4748 110 0.58 62
IV.RINC.HHN. 2020-03-31T21:19:16.35 0.3 undecidable manual S 176 0.4254 112 0.54 63
IV.SEI.HHE. 2020-03-31T21:19:12.33 0.6 undecidable manual S 210 0.2968 122 -0.08 48
IV.LMD.HHZ. 2020-03-31T21:19:11.09 0.3 undecidable manual S 157 0.2545 127 -0.27 70
IV.RUFI.EHE. 2020-03-31T21:19:10.09 0.3 undecidable manual P 185 0.4748 110 0.2 68
IV.BRIS.HHZ. 2020-03-31T21:19:09.00 0.3 undecidable manual S 121 0.1673 140 -0.47 68
IV.IMOL.EHZ. 2020-03-31T21:19:09.66 0.3 undecidable manual S 69 0.1349 146 0.77 61
IV.RINC.HHN. 2020-03-31T21:19:09.34 0.3 undecidable manual P 176 0.4254 112 0.23 68
IV.MTRZ.HHZ. 2020-03-31T21:19:09.05 0.3 undecidable manual S 271 0.1016 154 0.65 64
IV.VISG.HHZ. 2020-03-31T21:19:08.53 0.6 undecidable manual S 218 0.1547 142 -0.71 42
IV.SEI.HHE. 2020-03-31T21:19:07.02 0.3 undecidable manual P 210 0.2968 122 -0.12 71
IV.LMD.HHZ. 2020-03-31T21:19:06.00 0.3 undecidable manual P 157 0.2545 127 -0.54 65
IV.BRIS.HHZ. 2020-03-31T21:19:05.21 0.1 undecidable manual P 121 0.1673 140 -0.24 95
IV.IMOL.EHZ. 2020-03-31T21:19:05.30 0.3 undecidable manual P 69 0.1349 146 0.18 73
IV.MTRZ.HHZ. 2020-03-31T21:19:04.77 0.1 undecidable manual P 271 0.1016 154 -0.06 100
IV.VISG.HHZ. 2020-03-31T21:19:04.48 0.3 negative manual P 218 0.1547 142 -0.84 59
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.5 0.00015563022 0.128 AML other m 2020-03-31T21:19:09.32
IV.MTRZ.HHN. ML:1.8 0.0003294868 0.2176 AML other m 2020-03-31T21:19:10.21
IV.MTRZ.HHE. ML:1.6 0.0002106921 0.2048 AML other m 2020-03-31T21:19:09.95
IV.MTRZ.HNN. ML:1.8 0.000329990185 0.2176 AML other m 2020-03-31T21:19:10.22
IV.MTRZ.HNE. ML:1.5 0.0001699395 0.192 AML other m 2020-03-31T21:19:10.06
IV.BRIS.HHE. ML:1.4 0.000111402915 0.384 AML other m 2020-03-31T21:19:09.58
IV.BRIS.HHN. ML:1.3 9.461369E-5 0.2432 AML other m 2020-03-31T21:19:11.75
IV.IMOL.HNN. ML:1.5 0.0001664034 0.2304 AML other m 2020-03-31T21:19:10.90
IV.IMOL.HNE. ML:1.4 0.000118331785 0.1792 AML other m 2020-03-31T21:19:10.29
IV.LMD.HHE. ML:1.5 0.0001157625 0.4992 AML other m 2020-03-31T21:19:11.67
IV.LMD.HHN. ML:1.6 0.00014368555 0.2176 AML other m 2020-03-31T21:19:11.87
IV.VISG.HHN. ML:1.5 0.00016405155 0.1152 AML other m 2020-03-31T21:19:09.29
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download