Earthquake with magnitude of ML 2.4 on date 31-10-2020 and time 10:24:47 (UTC) in region 7 km SE Monterenzio (BO)

A magnitude ML 2.4 earthquake occured in region: 7 km SE Monterenzio (BO), on

  • 31-10-2020 10:24:47 (UTC)
  • 31-10-2020 11:24:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.286, 11.471 at 18 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
Monterenzio BO 7 6035 6035
Fontanelice BO 8 1943 7978
Castel del Rio BO 8 1246 9224
Borgo Tossignano BO 10 3288 12512
Casalfiumanese BO 12 3438 15950
Loiano BO 12 4294 20244
Casola Valsenio RA 14 2617 22861
Monghidoro BO 14 3749 26610
Pianoro BO 15 17460 44070
Dozza BO 15 6652 50722
Castel San Pietro Terme BO 16 20811 71533
Monzuno BO 16 6328 77861
Ozzano dell'Emilia BO 18 13596 91457
Firenzuola FI 20 4726 96183

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Imola (69797 inhabitants)
26 Km SE of Bologna (386663 inhabitants)
33 Km W of Faenza (58541 inhabitants)
46 Km W of Forlì (117913 inhabitants)
54 Km NE of Prato (191150 inhabitants)
59 Km NE of Pistoia (90315 inhabitants)
59 Km SE of Modena (184973 inhabitants)
60 Km W of Ravenna (159116 inhabitants)
60 Km NE of Firenze (382808 inhabitants)
62 Km S of Ferrara (133155 inhabitants)
63 Km NE of Scandicci (50609 inhabitants)
64 Km W of Cesena (96758 inhabitants)
72 Km SE of Carpi (70699 inhabitants)
81 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km W of Rimini (147750 inhabitants)
91 Km S of Rovigo (51867 inhabitants)
92 Km NE of Lucca (89046 inhabitants)
97 Km NW 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 2.4 2020-10-31
10:24:47
44.2855 11.4713 18 2021-02-26
14:56:13
Bollettino Sismico Italiano INGV 86037911
Reviewed
Rev100
ML 2.4 2020-10-31
10:24:46
44.3328 11.4318 22 2020-10-31
10:34:27
Sala Sismica INGV-Roma 84318611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 10:24:47 ± 0.12
Latitude 44.2855 ± 0.0072
Longitude 11.4713 ± 0.0088
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86037911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 778
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 780
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
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) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 2.28428
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 86037911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 14:05:13

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 84318611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 10:34:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.SABO.HHZ. 2020-10-31T10:25:22.29 0.1 undecidable manual P 41 2.2843 54 -2.69 6
ST.RONC.EHZ. 2020-10-31T10:25:18.88 0.3 undecidable manual P 341 1.7959 54 0.64 42
ST.PANI.EHZ. 2020-10-31T10:25:18.51 0.3 undecidable manual P 357 1.7663 54 0.68 42
IV.MAGA.HHZ. 2020-10-31T10:25:15.49 0.3 undecidable manual P 339 1.6035 54 -0.09 52
ST.VARA.EHZ. 2020-10-31T10:25:14.81 0.3 undecidable manual P 345 1.5918 54 -0.62 45
IV.MBAL.EHZ. 2020-10-31T10:25:13.28 0.3 undecidable manual P 343 1.4758 54 -0.54 50
IV.MURB.HHZ. 2020-10-31T10:25:11.38 0.3 undecidable manual P 143 1.2734 93 0.67 52
GU.GRAM.HHZ. 2020-10-31T10:25:07.64 0.3 undecidable manual P 282 1.0252 94 1.18 45
IV.ASQU.HHZ. 2020-10-31T10:25:06.76 0.3 undecidable manual S 155 0.5396 99 0.71 60
IV.PE3.EHZ. 2020-10-31T10:25:06.00 0.3 undecidable manual P 128 0.9434 95 0.93 51
IV.PII.HHZ. 2020-10-31T10:25:04.15 0.6 undecidable manual P 231 0.8831 95 0.1 44
IV.RUFI.EHZ. 2020-10-31T10:25:03.66 0.6 undecidable manual S 176 0.4479 101 0.27 47
GU.MAIM.HHZ. 2020-10-31T10:25:03.19 0.3 undecidable manual P 243 0.795 96 0.65 59
IV.CPGN.EHZ. 2020-10-31T10:25:03.10 0.3 undecidable manual P 128 0.7788 96 0.84 55
GU.CARD.HHZ. 2020-10-31T10:25:02.63 0.3 undecidable manual P 250 0.7554 96 0.76 57
MN.VLC.HHZ. 2020-10-31T10:25:02.98 0.3 undecidable manual P 261 0.7869 96 0.57 61
IV.RINC.HHZ. 2020-10-31T10:25:02.82 0.3 undecidable manual S 166 0.4101 102 0.52 66
GU.SARM.EHN. 2020-10-31T10:25:02.83 0.3 undecidable manual P 263 0.7734 96 0.66 59
IV.CRE.HHZ. 2020-10-31T10:25:01.91 0.3 undecidable manual P 152 0.7509 96 0.13 68
IV.BDI.HNZ. 2020-10-31T10:25:00.13 0.3 undecidable manual P 251 0.6664 97 -0.22 68
IV.MOCL.EHZ. 2020-10-31T10:25:00.58 0.6 undecidable manual S 217 0.3498 105 0.04 50
IV.CRMI.HNN. 2020-10-31T10:24:59.54 0.3 undecidable manual P 216 0.6034 98 0.25 69
IV.RONT.HHZ. 2020-10-31T10:24:59.25 0.3 undecidable manual S 185 0.2932 109 0.3 72
IV.FNVD.HHZ. 2020-10-31T10:24:58.72 0.6 undecidable manual S 245 0.2761 111 0.25 49
IV.BRIS.HHZ. 2020-10-31T10:24:57.41 0.3 undecidable manual S 106 0.2194 117 0.46 72
IV.SEI.HHZ. 2020-10-31T10:24:57.63 0.6 undecidable manual S 199 0.2446 114 0.01 51
IV.ASQU.HHZ. 2020-10-31T10:24:57.72 0.3 undecidable manual P 155 0.5396 99 -0.48 67
IV.IMOL.EHZ. 2020-10-31T10:24:57.73 1.0 undecidable manual S 69 0.2077 119 1.1 19
IV.SFI.HNN. 2020-10-31T10:24:56.37 0.1 undecidable manual P 145 0.4667 101 -0.6 86
IV.RUFI.EHZ. 2020-10-31T10:24:56.19 0.3 undecidable manual P 176 0.4479 101 -0.47 68
IV.ZCCA.HNZ. 2020-10-31T10:24:55.08 0.6 undecidable manual P 281 0.3597 105 -0.11 49
IV.RINC.HHZ. 2020-10-31T10:24:55.43 0.1 undecidable manual P 166 0.4101 102 -0.6 88
IV.CMPO.HNZ. 2020-10-31T10:24:55.78 0.3 undecidable manual P 39 0.3795 104 0.27 73
IV.MPPT.EHZ. 2020-10-31T10:24:55.56 0.3 undecidable manual P 220 0.4272 102 -0.75 62
IV.MOCL.EHZ. 2020-10-31T10:24:54.24 0.3 undecidable manual P 217 0.3498 105 -0.78 62
IV.MTRZ.HHZ. 2020-10-31T10:24:54.01 0.3 undecidable manual S 309 0.0432 163 0.57 72
IV.VISG.HHZ. 2020-10-31T10:24:54.16 0.6 undecidable manual S 195 0.0998 143 -0.05 53
IV.RONT.HHZ. 2020-10-31T10:24:54.20 0.3 undecidable manual P 185 0.2932 109 0.1 75
IV.FNVD.HHZ. 2020-10-31T10:24:52.82 0.1 positive manual P 245 0.2761 111 -1 76
IV.IMOL.EHZ. 2020-10-31T10:24:52.33 0.3 undecidable manual P 69 0.2077 119 -0.43 71
IV.BRIS.HHZ. 2020-10-31T10:24:52.47 0.1 undecidable manual P 106 0.2194 117 -0.47 94
IV.SEI.HHZ. 2020-10-31T10:24:52.63 0.1 positive manual P 199 0.2446 114 -0.7 87
IV.VISG.HHZ. 2020-10-31T10:24:50.77 0.1 undecidable manual P 195 0.0998 143 -0.59 93
IV.MTRZ.HHZ. 2020-10-31T10:24:50.59 0.1 positive manual P 309 0.0432 163 -0.32 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:2.9 0.00639 0.38 AML other m 2020-10-31T10:24:54.27
IV.VISG.HHN. ML:2.7 0.00432 0.6 AML other m 2020-10-31T10:24:54.34
IV.MTRZ.HHN. ML:2.5 0.002665 0.44 AML other m 2020-10-31T10:24:55.55
IV.MTRZ.HNN. ML:2.5 0.002605 0.46 AML other m 2020-10-31T10:24:55.56
IV.MTRZ.HHE. ML:2.3 0.001805 1.48 AML other m 2020-10-31T10:24:56.23
IV.MTRZ.HNE. ML:2.3 0.001735 1.46 AML other m 2020-10-31T10:24:56.97
IV.BRIS.HHN. ML:2.4 0.00127 1.24 AML other m 2020-10-31T10:24:57.37
IV.SEI.HHN. ML:2.6 0.00198 0.42 AML other m 2020-10-31T10:24:58.60
IV.SEI.HHE. ML:2.5 0.00138 0.32 AML other m 2020-10-31T10:24:59.99
IV.FNVD.HHE. ML:2.2 0.0006075 0.36 AML other m 2020-10-31T10:24:59.78
IV.BRIS.HHE. ML:2.2 0.000882 0.44 AML other m 2020-10-31T10:25:00.35
IV.FNVD.HHN. ML:2.2 0.0006605 0.4 AML other m 2020-10-31T10:25:00.38
IV.RONT.HHE. ML:2.5 0.00124 0.24 AML other m 2020-10-31T10:25:00.37
IV.RONT.HHN. ML:2.4 0.001116 0.2 AML other m 2020-10-31T10:25:00.70
IV.MOCL.EHE. ML:2 0.0003635 0.22 AML other m 2020-10-31T10:25:01.89
IV.MOCL.EHN. ML:2 0.000313 0.3 AML other m 2020-10-31T10:25:01.94
IV.MPPT.EHN. ML:1.6 0.000111 1.64 AML other m 2020-10-31T10:25:03.84
IV.RINC.HHE. ML:2.3 0.000563 1.08 AML other m 2020-10-31T10:25:04.82
IV.RINC.HHN. ML:2.2 0.0004185 0.44 AML other m 2020-10-31T10:25:04.63
IV.MPPT.EHE. ML:1.8 0.000151 0.7 AML other m 2020-10-31T10:25:04.54
IV.ASQU.HHE. ML:2.3 0.0004205 0.4 AML other m 2020-10-31T10:25:08.24
IV.ASQU.HHN. ML:2.1 0.000255 0.42 AML other m 2020-10-31T10:25:08.36
IV.CRE.HHN. ML:2.1 0.0001485 0.52 AML other m 2020-10-31T10:25:15.88
GU.CARD.HHN. ML:1.9 0.00010345 1 AML other m 2020-10-31T10:25:17.60
IV.CRE.HHE. ML:2.1 0.000155 0.54 AML other m 2020-10-31T10:25:18.23
GU.CARD.HHE. ML:1.9 9.965E-5 0.52 AML other m 2020-10-31T10:25:20.51
IV.PII.HHN. ML:2.2 0.0001545 0.32 AML other m 2020-10-31T10:25:21.30
IV.PII.HHE. ML:2.3 0.0002045 0.3 AML other m 2020-10-31T10:25:22.62
IV.PE3.EHN. ML:2.5 0.000316 0.36 AML other m 2020-10-31T10:25:24.63
GU.GRAM.HHN. ML:2.5 0.000236 1.6 AML other m 2020-10-31T10:25:25.13
GU.GRAM.HHE. ML:2.4 0.0002015 0.32 AML other m 2020-10-31T10:25:25.13
IV.PE3.EHE. ML:2.6 0.000363 0.38 AML other m 2020-10-31T10:25:31.02
IV.MURB.HHE. ML:2.2 9.845E-5 0.32 AML other m 2020-10-31T10:25:33.58
IV.MURB.HHN. ML:2.4 0.0001265 0.32 AML other m 2020-10-31T10:25:35.17
ST.VARA.EHN. ML:2.5 0.00011415 1.48 AML other m 2020-10-31T10:25:38.22
ST.VARA.EHE. ML:2.6 0.0001595 0.16 AML other m 2020-10-31T10:25:38.70
IV.MAGA.HHN. ML:2.6 0.0001635 0.26 AML other m 2020-10-31T10:25:41.31
IV.MAGA.HHE. ML:2.8 0.000253 1.38 AML other m 2020-10-31T10:25:44.72
ST.RONC.EHN. ML:2.6 0.00011545 0.42 AML other m 2020-10-31T10:25:46.47
ST.RONC.EHE. ML:2.5 8.585E-5 0.72 AML other m 2020-10-31T10:25:47.46
IV.EL6.EHN. ML:2.1 5.59E-5 1.42 AML other m 2020-10-31T10:25:47.00
IV.EL6.EHE. ML:2.2 5.8355E-5 0.38 AML other m 2020-10-31T10:25:48.63
IV.AGLI.HHE. ML:2.8 3.485E-5 1.22 AML other m 2020-10-31T10:25:58.81
IV.AGLI.HHN. ML:2.6 2.49E-5 1.2 AML other m 2020-10-31T10:26:00.81
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