Earthquake with magnitude of ML 1.3 on date 31-03-2020 and time 22:17:03 (Italy) in region 5 km NW Borgo Tossignano (BO)

A magnitude ML 1.3 earthquake occured in region: 5 km NW Borgo Tossignano (BO), on

  • 31-03-2020 20:17:03 (UTC)
  • 31-03-2020 22:17:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.31, 11.54 at 25 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 5 3288 3288
Fontanelice BO 6 1943 5231
Casalfiumanese BO 6 3438 8669
Dozza BO 9 6652 15321
Castel San Pietro Terme BO 11 20811 36132
Castel del Rio BO 11 1246 37378
Casola Valsenio RA 11 2617 39995
Monterenzio BO 11 6035 46030
Imola BO 14 69797 115827
Riolo Terme RA 15 5720 121547
Ozzano dell'Emilia BO 16 13596 135143
Castel Guelfo di Bologna BO 18 4455 139598
Loiano BO 18 4294 143892
Pianoro BO 18 17460 161352

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Imola (69797 inhabitants)
26 Km SE of Bologna (386663 inhabitants)
27 Km W of Faenza (58541 inhabitants)
41 Km W of Forlì (117913 inhabitants)
54 Km W of Ravenna (159116 inhabitants)
59 Km W of Cesena (96758 inhabitants)
59 Km S of Ferrara (133155 inhabitants)
59 Km NE of Prato (191150 inhabitants)
62 Km SE of Modena (184973 inhabitants)
64 Km NE of Firenze (382808 inhabitants)
65 Km NE of Pistoia (90315 inhabitants)
68 Km NE of Scandicci (50609 inhabitants)
74 Km SE of Carpi (70699 inhabitants)
85 Km SE of Reggio nell'Emilia (171345 inhabitants)
86 Km W of Rimini (147750 inhabitants)
87 Km S of Rovigo (51867 inhabitants)
97 Km N of Arezzo (99543 inhabitants)
98 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 2020-03-31
20:17:03
44.31 11.55 25 2020-03-31
20:35:25
Sala Sismica INGV-Roma 77733631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 20:17:03 ± 0.35
Latitude 44.31 ± 0.01
Longitude 11.55 ± 0.02
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77733631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1333
Semi-minor axis of confidence ellipse (meter) 937
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 110
Circular confidence region, given by single value of horizontal uncertainty (meter) 1330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.54049
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 77733631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 20:35:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PZUN.HHZ. 2020-03-31T20:18:08.65 3.0 positive manual Pg 14.42 0
IV.VCEL.EHZ. 2020-03-31T20:17:51.81 3.0 undecidable manual Sn -0.3 0
OT.OT05.EHZ. 2020-03-31T20:17:43.88 3.0 negative manual Pn -0.01 0
IV.PTRJ.HNZ. 2020-03-31T20:17:38.73 3.0 undecidable manual Pn 0.38 0
IV.VCEL.EHZ. 2020-03-31T20:17:25.47 3.0 undecidable manual Pn 1.05 0
IV.RINC.HHZ. 2020-03-31T20:17:19.63 0.6 undecidable manual S 174 0.4236 111 0.68 40
IV.SEI.HHZ. 2020-03-31T20:17:15.46 0.6 undecidable manual S 208 0.2869 121 0.17 48
IV.LMD.HHZ. 2020-03-31T20:17:14.55 0.3 undecidable manual S 153 0.2581 125 -0.04 75
IV.ASQU.HHZ. 2020-03-31T20:17:14.51 0.3 undecidable manual P 161 0.5405 106 0.3 67
IV.MURB.HHZ. 2020-03-31T20:17:13.66 3.0 undecidable manual P 3.7 0
IV.IMOL.EHZ. 2020-03-31T20:17:12.88 0.6 undecidable manual S 70 0.1502 142 0.65 44
IV.MTRZ.HHZ. 2020-03-31T20:17:12.23 0.6 undecidable manual S 273 0.0863 156 0.97 39
IV.RINC.HHZ. 2020-03-31T20:17:12.58 0.3 undecidable manual P 174 0.4236 111 0.27 69
IV.BRIS.HHZ. 2020-03-31T20:17:12.04 0.6 undecidable manual S 118 0.179 136 -0.76 41
IV.VISG.HHZ. 2020-03-31T20:17:11.73 0.3 undecidable manual S 214 0.143 143 -0.38 71
IV.SEI.HHZ. 2020-03-31T20:17:10.14 0.6 undecidable manual P 208 0.2869 121 -0.06 49
IV.LMD.HHZ. 2020-03-31T20:17:09.40 0.3 undecidable manual P 153 0.2581 125 -0.39 69
IV.ATFO.HHZ. 2020-03-31T20:17:09.86 3.0 undecidable manual Pn 0.02 0
IV.CMPO.HNN. 2020-03-31T20:17:09.98 1.0 undecidable manual P 34 0.3292 117 -0.86 18
IV.BRIS.HHZ. 2020-03-31T20:17:08.39 0.3 undecidable manual P 118 0.179 136 -0.37 70
IV.IMOL.EHZ. 2020-03-31T20:17:08.60 0.1 negative manual P 70 0.1502 142 0.17 100
IV.RIBO.EHZ.01 2020-03-31T20:17:08.87 3.0 negative manual Pn -0.76 0
IV.MTRZ.HHZ. 2020-03-31T20:17:07.98 0.3 undecidable manual P 273 0.0863 156 0.11 77
IV.CPGN.EHZ. 2020-03-31T20:17:07.24 3.0 undecidable manual Pn -0.8 0
IV.VISG.HHZ. 2020-03-31T20:17:07.76 0.3 undecidable manual P 214 0.143 143 -0.6 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHN. ML:0 0.00019305625 0.4224 AML other m 2020-03-31T20:17:16.03
IV.SEI.HHE. ML:0 7.3338705E-5 0.2944 AML other m 2020-03-31T20:17:16.24
IV.VISG.HHE. ML:1.3 0.00010147552 0.128 AML other m 2020-03-31T20:17:12.53
IV.VISG.HHN. ML:1.2 7.7261245E-5 0.1024 AML other m 2020-03-31T20:17:12.50
IV.MTRZ.HNN. ML:1.4 0.00016497965 0.2048 AML other m 2020-03-31T20:17:13.44
IV.MTRZ.HNE. ML:1.2 0.00010168939 0.2816 AML other m 2020-03-31T20:17:14.79
IV.MTRZ.HHE. ML:1.3 0.00011329238 0.1792 AML other m 2020-03-31T20:17:13.27
IV.MTRZ.HHN. ML:1.5 0.0001792412 0.2176 AML other m 2020-03-31T20:17:13.44
IV.BRIS.HHN. ML:1 4.7967283E-5 0.2176 AML other m 2020-03-31T20:17:14.96
IV.BRIS.HNE. ML:1.4 0.00012028429 0.7552 AML other m 2020-03-31T20:17:14.82
IV.BRIS.HHE. ML:0.8 3.205473E-5 0.1536 AML other m 2020-03-31T20:17:15.46
IV.IMOL.HNN. ML:1.4 0.000133159735 0.1664 AML other m 2020-03-31T20:17:13.00
IV.IMOL.HNE. ML:1.5 0.000167091699 0.2304 AML other m 2020-03-31T20:17:14.44
IV.LMD.HHN. ML:1.3 6.859643E-5 0.2432 AML other m 2020-03-31T20:17:14.96
IV.LMD.HHE. ML:1.1 5.220226E-5 0.4224 AML other m 2020-03-31T20:17:14.88
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download