Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 31-10-2020 and time 11:24:47 (Italy) 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) 44.2860, 11.4710 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.

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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
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 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) 780.0
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(km) Takeoff_angle Residual Weight
OX.SABO.HHZ. 2020-10-31T10:25:22.29 0.1 undecidable manual P 41 253.5573 54 -2.69 6
ST.PANI.EHZ. 2020-10-31T10:25:18.51 0.3 undecidable manual P 357 196.0593 54 0.68 42
ST.RONC.EHZ. 2020-10-31T10:25:18.88 0.3 undecidable manual P 341 199.3449 54 0.64 42
IV.MAGA.HHZ. 2020-10-31T10:25:15.49 0.3 undecidable manual P 339 177.9885 54 -0.09 52
ST.VARA.EHZ. 2020-10-31T10:25:14.81 0.3 undecidable manual P 345 176.6898 54 -0.62 45
IV.MBAL.EHZ. 2020-10-31T10:25:13.28 0.3 undecidable manual P 343 163.8138 54 -0.54 50
IV.MURB.HHZ. 2020-10-31T10:25:11.38 0.3 undecidable manual P 143 141.3474 93 0.67 52
GU.GRAM.HHZ. 2020-10-31T10:25:07.64 0.3 undecidable manual P 282 113.7972 94 1.18 45
IV.ASQU.HHZ. 2020-10-31T10:25:06.76 0.3 undecidable manual S 155 59.8956 99 0.71 60
IV.PE3.EHZ. 2020-10-31T10:25:06.00 0.3 undecidable manual P 128 104.7174 95 0.93 51
IV.PII.HHZ. 2020-10-31T10:25:04.15 0.6 undecidable manual P 231 98.0241 95 0.1 44
IV.CPGN.EHZ. 2020-10-31T10:25:03.10 0.3 undecidable manual P 128 86.4468 96 0.84 55
IV.RUFI.EHZ. 2020-10-31T10:25:03.66 0.6 undecidable manual S 176 49.7169 101 0.27 47
GU.MAIM.HHZ. 2020-10-31T10:25:03.19 0.3 undecidable manual P 243 88.245 96 0.65 59
MN.VLC.HHZ. 2020-10-31T10:25:02.98 0.3 undecidable manual P 261 87.3459 96 0.57 61
IV.RINC.HHZ. 2020-10-31T10:25:02.82 0.3 undecidable manual S 166 45.5211 102 0.52 66
GU.SARM.EHN. 2020-10-31T10:25:02.83 0.3 undecidable manual P 263 85.8474 96 0.66 59
GU.CARD.HHZ. 2020-10-31T10:25:02.63 0.3 undecidable manual P 250 83.8494 96 0.76 57
IV.CRE.HHZ. 2020-10-31T10:25:01.91 0.3 undecidable manual P 152 83.3499 96 0.13 68
IV.BDI.HNZ. 2020-10-31T10:25:00.13 0.3 undecidable manual P 251 73.9704 97 -0.22 68
IV.MOCL.EHZ. 2020-10-31T10:25:00.58 0.6 undecidable manual S 217 38.8278 105 0.04 50
IV.RONT.HHZ. 2020-10-31T10:24:59.25 0.3 undecidable manual S 185 32.5452 109 0.3 72
IV.CRMI.HNN. 2020-10-31T10:24:59.54 0.3 undecidable manual P 216 66.9774 98 0.25 69
IV.FNVD.HHZ. 2020-10-31T10:24:58.72 0.6 undecidable manual S 245 30.6471 111 0.25 49
IV.SEI.HHZ. 2020-10-31T10:24:57.63 0.6 undecidable manual S 199 27.1506 114 0.01 51
IV.ASQU.HHZ. 2020-10-31T10:24:57.72 0.3 undecidable manual P 155 59.8956 99 -0.48 67
IV.IMOL.EHZ. 2020-10-31T10:24:57.73 1.0 undecidable manual S 69 23.0547 119 1.1 19
IV.BRIS.HHZ. 2020-10-31T10:24:57.41 0.3 undecidable manual S 106 24.3534 117 0.46 72
IV.RUFI.EHZ. 2020-10-31T10:24:56.19 0.3 undecidable manual P 176 49.7169 101 -0.47 68
IV.SFI.HNN. 2020-10-31T10:24:56.37 0.1 undecidable manual P 145 51.8037 101 -0.6 86
IV.MPPT.EHZ. 2020-10-31T10:24:55.56 0.3 undecidable manual P 220 47.4192 102 -0.75 62
IV.ZCCA.HNZ. 2020-10-31T10:24:55.08 0.6 undecidable manual P 281 39.9267 105 -0.11 49
IV.RINC.HHZ. 2020-10-31T10:24:55.43 0.1 undecidable manual P 166 45.5211 102 -0.6 88
IV.CMPO.HNZ. 2020-10-31T10:24:55.78 0.3 undecidable manual P 39 42.1245 104 0.27 73
IV.MTRZ.HHZ. 2020-10-31T10:24:54.01 0.3 undecidable manual S 309 4.7952 163 0.57 72
IV.VISG.HHZ. 2020-10-31T10:24:54.16 0.6 undecidable manual S 195 11.0778 143 -0.05 53
IV.RONT.HHZ. 2020-10-31T10:24:54.20 0.3 undecidable manual P 185 32.5452 109 0.1 75
IV.MOCL.EHZ. 2020-10-31T10:24:54.24 0.3 undecidable manual P 217 38.8278 105 -0.78 62
IV.SEI.HHZ. 2020-10-31T10:24:52.63 0.1 positive manual P 199 27.1506 114 -0.7 87
IV.FNVD.HHZ. 2020-10-31T10:24:52.82 0.1 positive manual P 245 30.6471 111 -1 76
IV.IMOL.EHZ. 2020-10-31T10:24:52.33 0.3 undecidable manual P 69 23.0547 119 -0.43 71
IV.BRIS.HHZ. 2020-10-31T10:24:52.47 0.1 undecidable manual P 106 24.3534 117 -0.47 94
IV.MTRZ.HHZ. 2020-10-31T10:24:50.59 0.1 positive manual P 309 4.7952 163 -0.32 100
IV.VISG.HHZ. 2020-10-31T10:24:50.77 0.1 undecidable manual P 195 11.0778 143 -0.59 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:2.9 0.006390000000000001 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 0.0017349999999999998 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 0.0006605000000000001 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 0.0003635 0.22 AML other m 2020-10-31T10:25:01.89
IV.MOCL.EHN. ML:2.0 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 0.0005629999999999999 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 0.00015099999999999998 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 0.00014850000000000003 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 0.00009964999999999998 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 0.00020150000000000002 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 0.00009845 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 0.00016350000000000002 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 0.00008585000000000001 0.72 AML other m 2020-10-31T10:25:47.46
IV.EL6.EHN. ML:2.1 0.0000559 1.42 AML other m 2020-10-31T10:25:47.00
IV.EL6.EHE. ML:2.2 0.000058355000000000006 0.38 AML other m 2020-10-31T10:25:48.63
IV.AGLI.HHE. ML:2.8 0.00003485 1.22 AML other m 2020-10-31T10:25:58.81
IV.AGLI.HHN. ML:2.6 0.000024900000000000002 1.2 AML other m 2020-10-31T10:26:00.81
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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