Earthquake with magnitude of ML 1.1 on date 31-03-2020 and time 21:32:41 (Italy) in region 2 km W Borgo Tossignano (BO)

A magnitude ML 1.1 earthquake occured in region: 2 km W Borgo Tossignano (BO), on

  • 31-03-2020 19:32:41 (UTC)
  • 31-03-2020 21:32:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.28, 11.57 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.

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 2 3288 3288
Fontanelice BO 3 1943 5231
Casalfiumanese BO 4 3438 8669
Casola Valsenio RA 8 2617 11286
Castel del Rio BO 9 1246 12532
Dozza BO 10 6652 19184
Riolo Terme RA 13 5720 24904
Castel San Pietro Terme BO 13 20811 45715
Monterenzio BO 14 6035 51750
Imola BO 14 69797 121547
Brisighella RA 18 7639 129186
Castel Guelfo di Bologna BO 19 4455 133641
Castel Bolognese RA 19 9554 143195
Ozzano dell'Emilia BO 19 13596 156791
Palazzuolo sul Senio FI 19 1154 157945
Loiano BO 20 4294 162239

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Imola (69797 inhabitants)
25 Km W of Faenza (58541 inhabitants)
29 Km SE of Bologna (386663 inhabitants)
38 Km W of Forlì (117913 inhabitants)
53 Km W of Ravenna (159116 inhabitants)
56 Km W of Cesena (96758 inhabitants)
58 Km NE of Prato (191150 inhabitants)
62 Km S of Ferrara (133155 inhabitants)
62 Km NE of Firenze (382808 inhabitants)
65 Km SE of Modena (184973 inhabitants)
65 Km NE of Pistoia (90315 inhabitants)
66 Km NE of Scandicci (50609 inhabitants)
77 Km SE of Carpi (70699 inhabitants)
84 Km W of Rimini (147750 inhabitants)
87 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km S of Rovigo (51867 inhabitants)
94 Km N of Arezzo (99543 inhabitants)
98 Km E of Lucca (89046 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 1.1 2020-03-31
19:32:41
44.29 11.57 28 2020-07-18
21:08:33
Bollettino Sismico Italiano INGV 78318661
Reviewed
Rev100
ML 1.2 2020-03-31
19:32:41
44.29 11.54 30 2020-03-31
19:50:50
Sala Sismica INGV-Roma 77733121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 19:32:41 ± 0.36
Latitude 44.29 ± 0.01
Longitude 11.57 ± 0.01
Depth (km) 28 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78318661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1408
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 351
Circular confidence region, given by single value of horizontal uncertainty (meter) 1410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.33904
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 78318661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-02 23:57:38

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 77733121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 19:50:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2020-03-31T19:33:55.49 3.0 undecidable manual Sn 1.41 0
MN.TRI.HHZ. 2020-03-31T19:33:50.01 3.0 undecidable manual Sg 10.22 0
OT.OT05.EHZ. 2020-03-31T19:33:43.39 3.0 undecidable manual Sg 14.99 0
IV.ROSPO.HHZ. 2020-03-31T19:33:20.22 3.0 undecidable manual Sg 5.64 0
TV.SF01.EHZ. 2020-03-31T19:33:12.44 3.0 undecidable manual Sg 10.1 0
IX.STN3.HHZ.02 2020-03-31T19:33:03.47 3.0 negative manual Pn -1.01 0
IV.MMUR.HNZ. 2020-03-31T19:32:54.85 3.0 undecidable manual Sn -4.3 0
IV.SEI.HHZ. 2020-03-31T19:32:54.39 0.3 undecidable manual S 213 0.2752 128 0.29 72
IV.LMD.HHZ. 2020-03-31T19:32:53.31 0.3 undecidable manual S 154 0.2311 133 0.21 73
IV.MTRZ.HHZ. 2020-03-31T19:32:51.19 0.3 undecidable manual S 285 0.1052 155 0.3 75
IV.BRIS.HHZ. 2020-03-31T19:32:51.50 0.3 undecidable manual S 113 0.1556 145 -0.13 76
IV.IMOL.EHN. 2020-03-31T19:32:51.90 0.6 undecidable manual S 59 0.1457 147 0.42 48
IV.VISG.HHZ. 2020-03-31T19:32:50.78 0.3 undecidable manual S 225 0.1349 149 -0.52 70
IV.FNVD.HHZ. 2020-03-31T19:32:50.31 0.3 undecidable manual P 250 0.339 121 0.49 69
IV.SEI.HHZ. 2020-03-31T19:32:49.04 0.1 undecidable manual P 213 0.2752 128 0.12 100
IV.LMD.HHZ. 2020-03-31T19:32:48.20 0.3 undecidable manual P 154 0.2311 133 -0.14 75
IV.BRIS.HHZ. 2020-03-31T19:32:47.35 0.3 undecidable manual P 113 0.1556 145 -0.14 76
IV.IMOL.EHN. 2020-03-31T19:32:47.55 0.3 undecidable manual P 59 0.1457 147 0.14 77
IV.MTRZ.HHZ. 2020-03-31T19:32:46.95 0.3 undecidable manual P 285 0.1052 155 -0.11 76
IV.VISG.HHZ. 2020-03-31T19:32:46.65 0.1 undecidable manual P 225 0.1349 149 -0.66 88
TV.SF01.EHZ. 2020-03-31T19:32:45.08 3.0 negative manual Pg 4.34 0
IV.LAV9.HHZ. 2020-03-31T19:32:42.91 3.0 undecidable manual Pn 0.11 0
IV.TERO.HHZ. 2020-03-31T19:32:40.15 3.0 undecidable manual P 1.03 0
IV.MMO1.EHZ. 2020-03-31T19:32:39.05 3.0 undecidable manual Pn 0.98 0
IV.MURB.HNZ. 2020-03-31T19:32:38.13 3.0 undecidable manual P -0.15 0
IV.RM33.EHZ. 2020-03-31T19:32:38.13 3.0 negative manual P -0.19 0
IV.NRCA.HHZ. 2020-03-31T19:32:37.90 3.0 negative manual Pn 0.26 0
IV.SMA1.EHZ. 2020-03-31T19:32:37.10 3.0 positive manual Pn -1.19 0
IV.MTRA.EHZ. 2020-03-31T19:32:37.72 3.0 positive manual P -0.56 0
IV.LNSS.HHZ. 2020-03-31T19:32:37.67 3.0 positive manual P -0.14 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:3 0.000195 1.68 AML other m 2020-03-31T19:32:39.87
IV.SMA1.EHN. ML:2.8 0.00015 0.96 AML other m 2020-03-31T19:32:40.49
IV.NRCA.HHN. ML:2.8 0.0002005 0.12 AML other m 2020-03-31T19:32:40.80
IV.LNSS.HHE. ML:2.7 0.0001285 0.56 AML other m 2020-03-31T19:32:40.68
IV.NRCA.HHE. ML:2.9 0.0002285 1.48 AML other m 2020-03-31T19:32:40.98
IV.MTRA.EHN. ML:2.6 8.78E-5 1.02 AML other m 2020-03-31T19:32:41.54
IV.LNSS.HHN. ML:2.6 8.63E-5 0.78 AML other m 2020-03-31T19:32:41.61
IV.MTRA.EHE. ML:2.6 9.81E-5 0.42 AML other m 2020-03-31T19:32:41.54
IV.RM33.EHE. ML:2.5 6.38E-5 1.02 AML other m 2020-03-31T19:32:42.70
IV.RM33.EHN. ML:2.4 5.46E-5 0.42 AML other m 2020-03-31T19:32:42.42
IV.VISG.HHE. ML:1.2 7.81E-5 0.86 AML other m 2020-03-31T19:32:50.48
IV.VISG.HHN. ML:1.1 5.385E-5 0.26 AML other m 2020-03-31T19:32:51.80
IX.STN3.HHE.02 ML:5.3 0.00491 0.48 AML other m 2020-03-31T19:33:29.89
IX.STN3.HHN.02 ML:5.1 0.00308 1.42 AML other m 2020-03-31T19:33:29.03
TDMT - Time Domain Moment Tensor
Fault Plane solutions 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