Earthquake with magnitude of ML 1.3 on date 07-04-2020 and time 02:09:17 (Italy) in region 3 km NW Borgo Tossignano (BO)

A magnitude ML 1.3 earthquake occured in region: 3 km NW Borgo Tossignano (BO), on

  • 07-04-2020 00:09:17 (UTC)
  • 07-04-2020 02:09:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.31, 11.57 at 28 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 3 3288 3288
Casalfiumanese BO 4 3438 6726
Fontanelice BO 5 1943 8669
Dozza BO 8 6652 15321
Casola Valsenio RA 10 2617 17938
Castel San Pietro Terme BO 10 20811 38749
Castel del Rio BO 12 1246 39995
Imola BO 12 69797 109792
Riolo Terme RA 13 5720 115512
Monterenzio BO 14 6035 121547
Castel Guelfo di Bologna BO 16 4455 126002
Ozzano dell'Emilia BO 17 13596 139598
Castel Bolognese RA 18 9554 149152
Brisighella RA 18 7639 156791
Medicina BO 20 16739 173530

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km W of Imola (69797 inhabitants)
25 Km W of Faenza (58541 inhabitants)
28 Km SE of Bologna (386663 inhabitants)
38 Km W of Forlì (117913 inhabitants)
51 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)
64 Km SE of Modena (184973 inhabitants)
65 Km NE of Firenze (382808 inhabitants)
67 Km NE of Pistoia (90315 inhabitants)
68 Km NE of Scandicci (50609 inhabitants)
76 Km SE of Carpi (70699 inhabitants)
84 Km W of Rimini (147750 inhabitants)
87 Km SE of Reggio nell'Emilia (171345 inhabitants)
87 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 1.3 2020-04-07
00:09:17
44.31 11.57 29 2020-04-07
00:19:22
Sala Sismica INGV-Roma 77960001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-07 00:09:17 ± 0.4
Latitude 44.31 ± 0.01
Longitude 11.57 ± 0.02
Depth (km) 29 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77960001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1909
Semi-minor axis of confidence ellipse (meter) 865
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 1910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32825
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 77960001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-07 00:19:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2020-04-07T00:09:33.37 3.0 undecidable manual P -0.75 0
IV.RONT.HHN. 2020-04-07T00:09:31.51 0.3 undecidable manual S 198 0.3283 123 0.44 66
IV.SEI.HHZ. 2020-04-07T00:09:30.21 0.3 undecidable manual S 212 0.295 126 -0.05 74
IV.LMD.HHZ. 2020-04-07T00:09:29.22 0.3 undecidable manual S 157 0.2473 131 0.07 73
IV.BRIS.HHZ. 2020-04-07T00:09:27.01 0.3 undecidable manual S 121 0.1601 145 -0.4 69
IV.IMOL.EHZ. 2020-04-07T00:09:27.48 0.3 undecidable manual S 66 0.1313 150 0.52 69
IV.MTRZ.HHZ. 2020-04-07T00:09:27.14 0.3 undecidable manual S 274 0.107 155 0.52 68
IV.VISG.HHZ. 2020-04-07T00:09:26.79 0.3 undecidable manual S 221 0.1538 146 -0.52 68
IV.RONT.HHN. 2020-04-07T00:09:25.65 0.1 undecidable manual P 198 0.3283 123 0.34 91
IV.SEI.HHZ. 2020-04-07T00:09:25.01 0.1 undecidable manual P 212 0.295 126 0.17 95
IV.BRIS.HHZ. 2020-04-07T00:09:23.10 0.1 undecidable manual P 121 0.1601 145 -0.1 98
IV.IMOL.EHZ. 2020-04-07T00:09:23.18 0.1 undecidable manual P 66 0.1313 150 0.25 98
IV.LMD.HHZ. 2020-04-07T00:09:23.87 0.1 undecidable manual P 157 0.2473 131 -0.33 92
IV.MTRZ.HHZ. 2020-04-07T00:09:22.68 0.1 undecidable manual P 274 0.107 155 -0.06 100
IV.VISG.HHZ. 2020-04-07T00:09:22.37 0.1 undecidable manual P 221 0.1538 146 -0.77 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.2 7.25E-5 0.98 AML other m 2020-04-07T00:09:27.01
IV.VISG.HHN. ML:1.4 0.000105 1.02 AML other m 2020-04-07T00:09:27.11
IV.MTRZ.HHE. ML:1.4 0.000113 1.8 AML other m 2020-04-07T00:09:28.93
IV.MTRZ.HHN. ML:1.6 0.0001735 0.24 AML other m 2020-04-07T00:09:28.19
IV.LMD.HHN. ML:1.4 8.99E-5 0.24 AML other m 2020-04-07T00:09:29.92
IV.LMD.HHE. ML:1.2 6.14E-5 0.26 AML other m 2020-04-07T00:09:29.83
IV.BRIS.HHE. ML:1 4.414249E-5 0.36 AML other m 2020-04-07T00:09:30.48
IV.BRIS.HHN. ML:1 4.0250305E-5 0.24 AML other m 2020-04-07T00:09:29.66
IV.IMOL.HNE. ML:1.3 9.9367815E-5 0.32 AML other m 2020-04-07T00:09:29.33
IV.IMOL.HNN. ML:1.5 0.0001454672 0.26 AML other m 2020-04-07T00:09:29.45
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