Earthquake with magnitude of ML 1.0 on date 02-04-2020 and time 09:50:24 (UTC) in region 2 km NW Fontanelice (BO)

A magnitude ML 1.0 earthquake occured in region: 2 km NW Fontanelice (BO), on

  • 02-04-2020 09:50:24 (UTC)
  • 02-04-2020 11:50:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.28, 11.55 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
Fontanelice BO 3 1943 1943
Borgo Tossignano BO 3 3288 5231
Casalfiumanese BO 6 3438 8669
Castel del Rio BO 8 1246 9915
Casola Valsenio RA 9 2617 12532
Dozza BO 11 6652 19184
Monterenzio BO 13 6035 25219
Castel San Pietro Terme BO 14 20811 46030
Riolo Terme RA 14 5720 51750
Imola BO 16 69797 121547
Loiano BO 18 4294 125841
Palazzuolo sul Senio FI 19 1154 126995
Brisighella RA 19 7639 134634
Ozzano dell'Emilia BO 19 13596 148230
Monghidoro BO 20 3749 151979
Castel Guelfo di Bologna BO 20 4455 156434

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Imola (69797 inhabitants)
27 Km W of Faenza (58541 inhabitants)
29 Km SE of Bologna (386663 inhabitants)
40 Km W of Forlì (117913 inhabitants)
54 Km W of Ravenna (159116 inhabitants)
57 Km NE of Prato (191150 inhabitants)
57 Km W of Cesena (96758 inhabitants)
61 Km NE of Firenze (382808 inhabitants)
62 Km S of Ferrara (133155 inhabitants)
63 Km NE of Pistoia (90315 inhabitants)
64 Km SE of Modena (184973 inhabitants)
65 Km NE of Scandicci (50609 inhabitants)
77 Km SE of Carpi (70699 inhabitants)
85 Km W of Rimini (147750 inhabitants)
87 Km SE of Reggio nell'Emilia (171345 inhabitants)
90 Km S of Rovigo (51867 inhabitants)
94 Km N of Arezzo (99543 inhabitants)
97 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 1.0 2020-04-02
09:50:24
44.28 11.55 28 2020-04-02
10:01:44
Sala Sismica INGV-Roma 77784241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-02 09:50:24 ± 0.53
Latitude 44.28 ± 0.02
Longitude 11.55 ± 0.03
Depth (km) 28 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77784241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2471
Semi-minor axis of confidence ellipse (meter) 1934
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 13
Circular confidence region, given by single value of horizontal uncertainty (meter) 2470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2635
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77784241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-02 10:01:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CFMN.HHZ. 2020-04-02T09:52:10.63 3.0 undecidable manual Sn -0.45 0
OT.OT05.EHZ. 2020-04-02T09:51:35.92 3.0 undecidable manual Pg 9.9 0
IV.MILN.HHZ. 2020-04-02T09:51:28.86 3.0 undecidable manual Sn -0.37 0
GU.ROTM.HHZ. 2020-04-02T09:51:06.28 3.0 negative manual Pn 0.6 0
IV.CTI.HHZ. 2020-04-02T09:50:58.87 3.0 undecidable manual Pg 0.55 0
IV.COR1.EHZ. 2020-04-02T09:50:48.14 3.0 undecidable manual P -0.55 0
IV.PE3.EHZ. 2020-04-02T09:50:43.20 3.0 undecidable manual P 0.28 0
IV.LMD.HHZ. 2020-04-02T09:50:36.10 0.6 undecidable manual S 151 0.2311 133 0.55 47
IV.SEI.HHZ. 2020-04-02T09:50:36.21 0.6 undecidable manual S 211 0.2635 128 -0.08 53
IV.VISG.HHZ. 2020-04-02T09:50:33.19 0.3 undecidable manual S 223 0.1232 151 -0.36 77
IV.MTRZ.HHZ. 2020-04-02T09:50:33.70 0.3 undecidable manual S 290 0.0953 157 0.5 76
IV.BRIS.HHZ. 2020-04-02T09:50:33.76 0.6 undecidable manual S 109 0.1646 143 -0.46 49
IV.LMD.HHZ. 2020-04-02T09:50:31.17 0.3 undecidable manual P 151 0.2311 133 0.35 75
IV.SEI.HHZ. 2020-04-02T09:50:31.50 0.3 undecidable manual P 211 0.2635 128 0.26 76
IV.MTRZ.HHZ. 2020-04-02T09:50:29.41 0.3 undecidable manual P 290 0.0953 157 -0.05 82
IV.BRIS.HHZ. 2020-04-02T09:50:29.89 0.6 undecidable manual P 109 0.1646 143 -0.16 53
IV.VISG.HHZ. 2020-04-02T09:50:29.19 0.1 undecidable manual P 223 0.1232 151 -0.47 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:1 5.67E-5 1.28 AML other m 2020-04-02T09:50:34.86
IV.VISG.HHE. ML:1 4.525E-5 0.46 AML other m 2020-04-02T09:50:34.38
IV.LMD.HHN. ML:1 3.96E-5 0.24 AML other m 2020-04-02T09:50:36.34
IV.LMD.HHE. ML:0.9 3.07E-5 0.72 AML other m 2020-04-02T09:50:36.25
IV.SEI.HHN. ML:1.5 0.00010305 0.38 AML other m 2020-04-02T09:50:37.40
IV.SEI.HHE. ML:1 3.425E-5 0.76 AML other m 2020-04-02T09:50:38.40
IV.PE3.EHE. ML:2.8 0.000565 0.08 AML other m 2020-04-02T09:51:01.40
IV.PE3.EHN. ML:2.8 0.00055 0.1 AML other m 2020-04-02T09:51:01.45
IV.MILN.HHN. ML:3.3 0.0004965 0.64 AML other m 2020-04-02T09:51:41.41
IV.MILN.HHE. ML:3.2 0.0003995 1.12 AML other m 2020-04-02T09:51:42.89
IV.CFMN.HHE. ML:4.2 0.0007855 0.42 AML other m 2020-04-02T09:52:12.64
IV.CFMN.HHN. ML:4.4 0.001275 1.24 AML other m 2020-04-02T09:52:13.07
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