Earthquake with magnitude of ML 1.5 on date 25-03-2020 and time 10:53:43 (UTC) in region 5 km W Casalfiumanese (BO)

A magnitude ML 1.5 earthquake occured in region: 5 km W Casalfiumanese (BO), on

  • 25-03-2020 10:53:43 (UTC)
  • 25-03-2020 11:53:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.32, 11.57 at 32 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
Casalfiumanese BO 5 3438 3438
Borgo Tossignano BO 5 3288 6726
Fontanelice BO 7 1943 8669
Dozza BO 7 6652 15321
Castel San Pietro Terme BO 9 20811 36132
Casola Valsenio RA 12 2617 38749
Imola BO 12 69797 108546
Castel del Rio BO 13 1246 109792
Monterenzio BO 13 6035 115827
Riolo Terme RA 14 5720 121547
Castel Guelfo di Bologna BO 16 4455 126002
Ozzano dell'Emilia BO 16 13596 139598
Medicina BO 19 16739 156337
Castel Bolognese RA 19 9554 165891
Pianoro BO 19 17460 183351
Brisighella RA 20 7639 190990

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km W of Imola (69797 inhabitants)
26 Km W of Faenza (58541 inhabitants)
26 Km SE of Bologna (386663 inhabitants)
39 Km W of Forlì (117913 inhabitants)
52 Km W of Ravenna (159116 inhabitants)
58 Km W of Cesena (96758 inhabitants)
58 Km S of Ferrara (133155 inhabitants)
61 Km NE of Prato (191150 inhabitants)
63 Km SE of Modena (184973 inhabitants)
66 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)
85 Km W of Rimini (147750 inhabitants)
85 Km E of Reggio nell'Emilia (171345 inhabitants)
86 Km S of Rovigo (51867 inhabitants)
98 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 2020-03-25
10:53:43
44.32 11.57 32 2020-03-25
11:05:10
Sala Sismica INGV-Roma 77560231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-25 10:53:43 ± 0.7
Latitude 44.32 ± 0.02
Longitude 11.57 ± 0.05
Depth (km) 32 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77560231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3490
Semi-minor axis of confidence ellipse (meter) 2506
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 3490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30397
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77560231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-25 11:05:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CARD.HHZ. 2020-03-25T10:54:04.29 3.0 undecidable manual P 1.27 0
IV.NARO.HHZ. 2020-03-25T10:54:03.89 3.0 undecidable manual P -1.22 0
IV.SEI.HHZ. 2020-03-25T10:53:56.64 0.3 undecidable manual S 209 0.304 129 0.03 75
IV.LMD.HHZ. 2020-03-25T10:53:55.90 0.3 undecidable manual S 157 0.2617 134 0.22 72
IV.MTRZ.HHZ. 2020-03-25T10:53:53.48 0.3 undecidable manual S 266 0.1016 159 0.49 71
IV.VISG.HHZ. 2020-03-25T10:53:52.86 0.3 undecidable manual S 216 0.161 148 -0.92 59
IV.SEI.HHZ. 2020-03-25T10:53:51.33 0.1 undecidable manual P 209 0.304 129 0.45 91
IV.LMD.HHZ. 2020-03-25T10:53:50.23 0.1 undecidable manual P 157 0.2617 134 -0.11 99
IV.MTRZ.HHZ. 2020-03-25T10:53:49.02 0.1 undecidable manual P 266 0.1016 159 0.23 100
IV.BRIS.HHZ. 2020-03-25T10:53:49.31 0.6 undecidable manual P 123 0.1718 146 -0.04 51
IV.VISG.HHZ. 2020-03-25T10:53:48.71 0.1 undecidable manual P 216 0.161 148 -0.54 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:1.5 0.0001345 0.7 AML other m 2020-03-25T10:53:53.55
IV.VISG.HHE. ML:1.4 0.00011705 1.02 AML other m 2020-03-25T10:53:54.58
IV.SEI.HHN. ML:2 0.000295 0.38 AML other m 2020-03-25T10:53:57.07
IV.SEI.HHE. ML:1.4 7.96E-5 0.5 AML other m 2020-03-25T10:53:58.66
IV.MTRZ.HHE. ML:1.3 9.1677045E-5 0.1984 AML other m 2020-03-25T10:53:54.22
IV.MTRZ.HHN. ML:1.6 0.0001629423 0.2176 AML other m 2020-03-25T10:53:54.48
IV.LMD.HHE. ML:1.3 5.9196515E-5 0.2048 AML other m 2020-03-25T10:53:56.25
IV.LMD.HHN. ML:1.4 9.080137E-5 0.256 AML other m 2020-03-25T10:53:56.09
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