Earthquake with magnitude of ML 2.6 on date 25-03-2020 and time 09:42:30 (Italy) in region 2 km NW Casalfiumanese (BO)

A magnitude ML 2.6 earthquake occured in region: 2 km NW Casalfiumanese (BO), on

  • 25-03-2020 08:42:30 (UTC)
  • 25-03-2020 09:42:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.31, 11.59 at 20 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
Casalfiumanese BO 3 3438 3438
Borgo Tossignano BO 4 3288 6726
Dozza BO 6 6652 13378
Fontanelice BO 7 1943 15321
Castel San Pietro Terme BO 10 20811 36132
Casola Valsenio RA 10 2617 38749
Imola BO 11 69797 108546
Riolo Terme RA 11 5720 114266
Castel del Rio BO 13 1246 115512
Monterenzio BO 15 6035 121547
Castel Guelfo di Bologna BO 15 4455 126002
Castel Bolognese RA 17 9554 135556
Brisighella RA 17 7639 143195
Ozzano dell'Emilia BO 17 13596 156791
Medicina BO 19 16739 173530
Mordano BO 20 4760 178290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km W of Imola (69797 inhabitants)
23 Km W of Faenza (58541 inhabitants)
28 Km SE of Bologna (386663 inhabitants)
37 Km W of Forlì (117913 inhabitants)
50 Km W of Ravenna (159116 inhabitants)
55 Km W of Cesena (96758 inhabitants)
58 Km S of Ferrara (133155 inhabitants)
62 Km NE of Prato (191150 inhabitants)
65 Km SE of Modena (184973 inhabitants)
66 Km NE of Firenze (382808 inhabitants)
68 Km NE of Pistoia (90315 inhabitants)
70 Km NE of Scandicci (50609 inhabitants)
77 Km SE of Carpi (70699 inhabitants)
83 Km W of Rimini (147750 inhabitants)
86 Km S of Rovigo (51867 inhabitants)
88 Km E of Reggio nell'Emilia (171345 inhabitants)
97 Km N of Arezzo (99543 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Bulletin
Rev1000
ML 2.6 2020-03-25
08:42:30
44.31 11.59 20 2020-07-18
21:08:38
Bollettino Sismico Italiano INGV 79689861
Reviewed
Rev100
ML 2.7 2020-03-25
08:42:30
44.32 11.59 23 2020-03-25
08:57:21
Sala Sismica INGV-Roma 77555371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-25 08:42:30 ± 0.13
Latitude 44.31 ± 0.01
Longitude 11.59 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79689861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 873
Semi-minor axis of confidence ellipse (meter) 274
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.11691
Epicentral distance of station farthest from the epicenter (degree) 1.5936
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 77555371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-25 08:57:21

ML:2.6

Field Value
Value 2.6
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 79689861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-24 17:13:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZOVE.EHZ. 2020-03-25T08:43:08.33 0.3 undecidable manual S 356 1.143 94 1.29 40
IV.CSNT.HHZ. 2020-03-25T08:42:59.40 1.0 undecidable manual S 195 0.8669 96 0.51 20
OX.CGRP.HHZ. 2020-03-25T08:42:57.46 0.3 undecidable manual P 5 1.5747 54 -0.73 46
IV.EL6.EHZ. 2020-03-25T08:42:57.82 0.6 undecidable manual P 132 1.4659 54 1.13 26
ST.DOSS.HHZ. 2020-03-25T08:42:57.76 0.3 undecidable manual P 350 1.5936 54 -0.69 46
IV.MBAL.EHZ. 2020-03-25T08:42:56.10 0.3 undecidable manual P 340 1.4785 54 -0.76 48
IV.FOSV.EHZ. 2020-03-25T08:42:55.38 0.3 undecidable manual P 140 1.3211 54 0.69 50
IV.ZOVE.EHZ. 2020-03-25T08:42:51.40 0.1 undecidable manual P 356 1.143 94 -0.25 81
IV.TEOL.HHE. 2020-03-25T08:42:50.24 0.1 undecidable manual P 3 1.0504 95 0.17 84
IV.PII.HHZ. 2020-03-25T08:42:49.62 0.3 undecidable manual P 233 0.9677 95 0.95 49
IV.ASQU.HHZ. 2020-03-25T08:42:49.49 0.3 undecidable manual S 165 0.5342 101 0.35 68
IV.MPPT.EHZ. 2020-03-25T08:42:48.80 0.3 undecidable manual S 226 0.5054 102 0.49 66
MN.VLC.HHZ. 2020-03-25T08:42:48.71 0.3 undecidable manual P 260 0.8768 96 1.59 35
IV.SFI.EHZ. 2020-03-25T08:42:47.27 0.6 undecidable manual S 156 0.4461 103 0.68 42
GU.MAIM.HHZ. 2020-03-25T08:42:47.95 0.6 undecidable manual P 244 0.8849 96 0.7 37
IV.RUFI.EHZ. 2020-03-25T08:42:47.87 0.3 undecidable manual S 187 0.4775 102 0.37 69
GU.SARM.EHN. 2020-03-25T08:42:47.74 0.3 undecidable manual P 262 0.8624 96 0.86 52
IV.CSNT.HHZ. 2020-03-25T08:42:47.32 0.3 undecidable manual P 195 0.8669 96 0.38 63
IV.PARC.HHZ. 2020-03-25T08:42:46.02 0.1 undecidable manual P 145 0.8094 97 0.04 91
IV.RINC.HHZ. 2020-03-25T08:42:46.70 0.3 undecidable manual S 179 0.4254 104 0.7 62
IV.BDI.HNZ. 2020-03-25T08:42:45.05 0.3 undecidable manual P 251 0.7572 97 -0.03 70
IV.CRE.HHZ. 2020-03-25T08:42:44.83 0.3 undecidable manual P 159 0.7392 97 0.04 69
IV.FNVD.HHZ. 2020-03-25T08:42:44.19 0.6 undecidable manual S 247 0.366 107 -0.11 50
GU.POPM.HHZ. 2020-03-25T08:42:43.61 0.3 undecidable manual P 246 0.6556 98 0.24 67
IV.RONT.HHZ. 2020-03-25T08:42:43.95 0.6 undecidable manual S 200 0.339 109 0.42 46
IV.SEI.HHZ. 2020-03-25T08:42:42.25 0.6 undecidable manual S 213 0.3076 111 -0.42 47
IV.LMD.HHZ. 2020-03-25T08:42:41.44 0.6 undecidable manual S 161 0.2491 117 0.37 48
IV.ASQU.HHZ. 2020-03-25T08:42:41.03 0.1 undecidable manual P 165 0.5342 101 -0.29 92
IV.MPPT.EHZ. 2020-03-25T08:42:40.33 0.3 undecidable manual P 226 0.5054 102 -0.51 67
IV.RINC.HHZ. 2020-03-25T08:42:39.27 0.1 undecidable manual P 179 0.4254 104 -0.24 95
IV.BRIS.HHZ. 2020-03-25T08:42:39.11 0.3 undecidable manual S 125 0.152 133 0.38 74
IV.SFI.EHZ. 2020-03-25T08:42:39.48 0.1 undecidable manual P 156 0.4461 103 -0.37 92
IV.RUFI.EHZ. 2020-03-25T08:42:39.83 0.3 undecidable manual P 187 0.4775 102 -0.54 66
IV.VISG.HHZ. 2020-03-25T08:42:38.48 0.3 undecidable manual S 223 0.1673 130 -0.58 68
IV.FNVD.HHZ. 2020-03-25T08:42:38.03 0.1 undecidable manual P 247 0.366 107 -0.49 91
IV.MTRZ.HHZ. 2020-03-25T08:42:38.64 0.3 undecidable manual S 270 0.1196 141 0.56 71
IV.IMOL.EHZ. 2020-03-25T08:42:38.79 0.6 undecidable manual S 66 0.1169 142 0.77 44
IV.RONT.HHZ. 2020-03-25T08:42:37.53 0.3 undecidable manual P 200 0.339 109 -0.55 68
IV.SEI.HHZ. 2020-03-25T08:42:36.85 0.1 undecidable manual P 213 0.3076 111 -0.73 84
IV.IMOL.EHZ. 2020-03-25T08:42:35.22 0.1 undecidable manual P 66 0.1169 142 0.32 100
IV.LMD.HHZ. 2020-03-25T08:42:35.85 0.1 undecidable manual P 161 0.2491 117 -0.81 82
IV.BRIS.HHZ. 2020-03-25T08:42:35.09 0.1 undecidable manual P 125 0.152 133 -0.22 100
IV.VISG.HHZ. 2020-03-25T08:42:34.35 0.1 undecidable manual P 223 0.1673 130 -1.15 71
IV.MTRZ.HHZ. 2020-03-25T08:42:34.63 0.1 undecidable manual P 270 0.1196 141 -0.3 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:2.7 0.002785 1.28 AML other m 2020-03-25T08:42:38.27
IV.BRIS.HHE. ML:2.7 0.003265 0.4 AML other m 2020-03-25T08:42:39.49
IV.VISG.HHN. ML:2.8 0.003785 0.72 AML other m 2020-03-25T08:42:39.59
IV.MTRZ.HHE. ML:2.9 0.00581 1.8 AML other m 2020-03-25T08:42:40.90
IV.MTRZ.HNE. ML:2.9 0.00549 1.8 AML other m 2020-03-25T08:42:40.90
IV.MTRZ.HHN. ML:3.2 0.00995 1.1 AML other m 2020-03-25T08:42:40.16
IV.MTRZ.HNN. ML:3.2 0.009595 1.1 AML other m 2020-03-25T08:42:40.16
IV.IMOL.HNE. ML:2.7 0.003215 0.56 AML other m 2020-03-25T08:42:40.28
IV.IMOL.HNN. ML:2.8 0.00479 0.8 AML other m 2020-03-25T08:42:41.88
IV.LMD.HHE. ML:2.9 0.00319 0.42 AML other m 2020-03-25T08:42:41.84
IV.BRIS.HHN. ML:2.6 0.002685 0.26 AML other m 2020-03-25T08:42:41.56
IV.LMD.HHN. ML:3 0.00443 0.26 AML other m 2020-03-25T08:42:41.81
IV.SEI.HHN. ML:3.6 0.01415 0.36 AML other m 2020-03-25T08:42:42.79
IV.RONT.HHN. ML:3.2 0.00469 0.3 AML other m 2020-03-25T08:42:44.23
IV.SEI.HHE. ML:3 0.003815 0.8 AML other m 2020-03-25T08:42:45.68
IV.SFI.HNE. ML:2.5 0.0008505 0.56 AML other m 2020-03-25T08:42:47.48
IV.SFI.EHE. ML:2.5 0.0008 0.54 AML other m 2020-03-25T08:42:47.49
IV.RONT.HHE. ML:3.3 0.00652 0.28 AML other m 2020-03-25T08:42:47.62
IV.RINC.HHE. ML:2.7 0.001445 0.32 AML other m 2020-03-25T08:42:48.00
IV.SFI.HNN. ML:2.8 0.00144 1.54 AML other m 2020-03-25T08:42:48.98
IV.SFI.EHN. ML:2.8 0.001455 1.52 AML other m 2020-03-25T08:42:48.98
IV.RUFI.EHE. ML:2.2 0.000376 0.3 AML other m 2020-03-25T08:42:48.33
IV.MPPT.EHE. ML:2.4 0.0004975 0.68 AML other m 2020-03-25T08:42:49.42
IV.RUFI.EHN. ML:2.3 0.0005195 0.36 AML other m 2020-03-25T08:42:49.58
IV.MPPT.EHN. ML:2.2 0.0003335 1.3 AML other m 2020-03-25T08:42:49.70
IV.RINC.HHN. ML:2.6 0.001135 0.74 AML other m 2020-03-25T08:42:50.38
IV.ASQU.HHE. ML:2.6 0.0008145 1.3 AML other m 2020-03-25T08:42:50.19
IV.ASQU.HHN. ML:2.7 0.00105 1.3 AML other m 2020-03-25T08:42:51.11
GU.POPM.HHN. ML:2.2 0.000214 1.26 AML other m 2020-03-25T08:42:54.34
GU.POPM.HHE. ML:2.1 0.0001755 0.76 AML other m 2020-03-25T08:42:57.38
IV.CRE.HHN. ML:2.5 0.0003825 0.28 AML other m 2020-03-25T08:42:59.18
IV.CRE.HHE. ML:2.4 0.0003045 0.44 AML other m 2020-03-25T08:43:00.55
IV.PARC.HHN. ML:2.2 0.00018745 0.62 AML other m 2020-03-25T08:43:02.65
IV.CSNT.HHE. ML:2.4 0.000246 0.48 AML other m 2020-03-25T08:43:03.52
IV.CSNT.HHN. ML:2.6 0.0003665 0.54 AML other m 2020-03-25T08:43:04.40
ST.OZOL.HNE. ML:3.4 0.0005985 0.82 AML other m 2020-03-25T08:43:06.75
IV.PARC.HHE. ML:2.1 0.000142 0.76 AML other m 2020-03-25T08:43:06.73
IV.ZOVE.EHN. ML:2.7 0.0003065 1.2 AML other m 2020-03-25T08:43:10.11
IV.ZOVE.HNN. ML:2.6 0.000302 0.74 AML other m 2020-03-25T08:43:10.11
IV.ZOVE.HNE. ML:2.7 0.000318 0.44 AML other m 2020-03-25T08:43:10.43
IV.ZOVE.EHE. ML:2.7 0.000339 0.44 AML other m 2020-03-25T08:43:10.44
IV.MBAL.EHE. ML:2.3 8.095E-5 0.8 AML other m 2020-03-25T08:43:21.20
ST.DOSS.HHN. ML:2.6 0.0001565 0.62 AML other m 2020-03-25T08:43:23.53
IV.MBAL.EHN. ML:2.2 7.24E-5 1.26 AML other m 2020-03-25T08:43:23.71
ST.DOSS.HHE. ML:2.7 0.0001715 0.44 AML other m 2020-03-25T08:43:27.67
OX.CGRP.HHN. ML:2.5 0.00012655 0.54 AML other m 2020-03-25T08:43:31.70
IV.PTRJ.HHE. ML:0 0.0001405 0.4 AML other m 2020-03-25T08:43:32.77
ST.OZOL.EHN. ML:2.6 9.42E-5 0.48 AML other m 2020-03-25T08:43:43.64
IV.PTRJ.HHN. ML:0 0.000677 0.44 AML other m 2020-03-25T08:43:44.88
IV.PTRJ.HNN. ML:0 0.000788 0.44 AML other m 2020-03-25T08:43:44.66
IV.PTRJ.HNE. ML:0 0.0005845 1.18 AML other m 2020-03-25T08:43:45.34
ST.OZOL.EHE. ML:2.7 0.000115 0.58 AML other m 2020-03-25T08:43:46.61
OX.CGRP.HHE. ML:2.5 0.00011385 0.42 AML other m 2020-03-25T08:43:48.66
ST.OZOL.HNN. ML:3.1 0.0002745 0.42 AML other m 2020-03-25T08:43:58.94
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download