Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 27-10-2020 and time 03:15:33 (Italy) in region 3 km E Castiglione dei Pepoli (BO)

A magnitude ML 2.0 earthquake occured in region: 3 km E Castiglione dei Pepoli (BO), on

  • 27-10-2020 02:15:33 (UTC)
  • 27-10-2020 03:15:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1410, 11.1920 at 6 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
Castiglione dei Pepoli BO 3 5648 5648
Camugnano BO 9 1885 7533
San Benedetto Val di Sambro BO 9 4315 11848
Vernio PO 10 6060 17908
Castel di Casio BO 13 3448 21356
Grizzana Morandi BO 13 3916 25272
Monghidoro BO 13 3749 29021
Cantagallo PO 14 3105 32126
Firenzuola FI 15 4726 36852
Sambuca Pistoiese PT 16 1626 38478
Barberino di Mugello FI 16 10836 49314
Monzuno BO 17 6328 55642
Alto Reno Terme BO 17 6960 62602
Vergato BO 17 7639 70241
Loiano BO 18 4294 74535
Vaiano PO 20 9895 84430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of Prato (191150 inhabitants)
32 Km NE of Pistoia (90315 inhabitants)
41 Km SW of Bologna (386663 inhabitants)
42 Km N of Firenze (382808 inhabitants)
43 Km N of Scandicci (50609 inhabitants)
48 Km W of Imola (69797 inhabitants)
57 Km W of Faenza (58541 inhabitants)
60 Km SE of Modena (184973 inhabitants)
64 Km NE of Lucca (89046 inhabitants)
68 Km W of Forlì (117913 inhabitants)
75 Km SE of Carpi (70699 inhabitants)
76 Km SE of Reggio nell'Emilia (171345 inhabitants)
79 Km NE of Pisa (89158 inhabitants)
81 Km E of Viareggio (62467 inhabitants)
84 Km W of Cesena (96758 inhabitants)
85 Km SW of Ferrara (133155 inhabitants)
85 Km E of Massa (69479 inhabitants)
86 Km W of Ravenna (159116 inhabitants)
88 Km E of Carrara (63133 inhabitants)
92 Km N of Siena (53903 inhabitants)
93 Km NW of Arezzo (99543 inhabitants)
96 Km NE of Livorno (159219 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 2.0 2020-10-27
02:15:33		 44.141 11.1923 6 2021-02-26
14:56:04		 Bollettino Sismico Italiano INGV 84601671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 02:15:33 ± 0.1
Latitude 44.1410 ± 0.0036
Longitude 11.1923 ± 0.0050
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84601671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 47
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 202
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.63762
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 84601671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-10 10:51:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHZ. 2020-10-27T02:15:46.17 3.0 undecidable manual P 70.7736 0.17 0
GU.POPM.HHZ. 2020-10-27T02:15:45.50 0.6 undecidable manual S 253 36.2415 100 -0.37 45
IV.ZCCA.HHZ. 2020-10-27T02:15:43.05 0.6 undecidable manual S 324 28.9488 103 -0.31 46
IV.BDI.HHZ. 2020-10-27T02:15:42.72 0.6 undecidable manual P 260 48.3183 50 0.18 46
IV.RUFI.EHZ. 2020-10-27T02:15:41.99 0.6 undecidable manual P 143 42.1245 50 0.41 44
IV.RONT.HHZ. 2020-10-27T02:15:41.83 0.6 undecidable manual S 130 25.2525 104 -0.28 47
IV.RINC.HHZ. 2020-10-27T02:15:41.63 0.6 undecidable manual P 130 43.5231 50 -0.17 46
IV.VISG.HHZ. 2020-10-27T02:15:40.45 0.3 undecidable manual S 74 19.9689 108 0.09 73
IV.MPPT.EHZ. 2020-10-27T02:15:40.94 0.6 undecidable manual S 202 21.9669 106 -0.06 49
GU.POPM.HHZ. 2020-10-27T02:15:40.87 0.6 undecidable manual P 253 36.2415 100 0.41 45
IV.SEI.HHZ. 2020-10-27T02:15:39.52 0.6 undecidable manual S 126 16.3725 111 0.34 46
IV.ZCCA.HHZ. 2020-10-27T02:15:39.56 0.6 undecidable manual P 324 28.9488 103 0.55 44
IV.MOCL.EHZ. 2020-10-27T02:15:39.04 0.3 undecidable manual S 183 15.1737 113 0.26 71
IV.RONT.HHZ. 2020-10-27T02:15:38.07 0.3 undecidable manual P 130 25.2525 104 -0.22 71
IV.VISG.HHZ. 2020-10-27T02:15:37.11 0.1 positive manual P 74 19.9689 108 -0.17 96
IV.MPPT.EHZ. 2020-10-27T02:15:37.65 0.6 undecidable manual P 202 21.9669 106 0 50
IV.FNVD.HHZ. 2020-10-27T02:15:36.06 0.6 undecidable manual S 298 6.2937 136 -0.13 50
IV.SEI.HHZ. 2020-10-27T02:15:36.61 0.1 undecidable manual P 126 16.3725 111 0.01 100
IV.MOCL.EHZ. 2020-10-27T02:15:35.97 0.3 undecidable manual P 183 15.1737 113 -0.4 69
IV.FNVD.HHZ. 2020-10-27T02:15:34.99 0.1 negative manual P 298 6.2937 136 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:2.5 0.003239404 0.1792 AML other m 2020-10-27T02:15:39.23
IV.MOCL.EHE. ML:2.1 0.001488574 0.16 AML other m 2020-10-27T02:15:39.73
IV.VISG.HHE. ML:1.8 0.0005809615999999999 0.08 AML other m 2020-10-27T02:15:40.94
IV.VISG.HHN. ML:2.0 0.0009145118 0.0992 AML other m 2020-10-27T02:15:41.13
IV.MPPT.EHN. ML:2.0 0.00072961095 0.44 AML other m 2020-10-27T02:15:41.43
IV.MPPT.EHE. ML:1.8 0.00042710689999999994 0.32 AML other m 2020-10-27T02:15:41.80
IV.RONT.HHE. ML:2.2 0.00105500335 0.1408 AML other m 2020-10-27T02:15:43.23
IV.RONT.HHN. ML:2.3 0.0013672710000000002 0.1808 AML other m 2020-10-27T02:15:43.94
GU.POPM.HHE. ML:2.0 0.00042445685 0.1008 AML other m 2020-10-27T02:15:45.59
GU.POPM.HHN. ML:2.2 0.0006323458499999999 0.16 AML other m 2020-10-27T02:15:45.53
IV.ZCCA.HHE. ML:1.7 0.00025556665 0.4 AML other m 2020-10-27T02:15:46.07
IV.ZCCA.HHN. ML:1.7 0.00028073755 0.36 AML other m 2020-10-27T02:15:46.16
IV.BDI.HHE. ML:1.7 0.0001341527 0.2416 AML other m 2020-10-27T02:15:48.77
IV.BDI.HHN. ML:1.7 0.00014656395 0.3008 AML other m 2020-10-27T02:15:48.90
IV.PII.HHE. ML:2.0 0.0001700762 0.2208 AML other m 2020-10-27T02:15:53.80
IV.PII.HHN. ML:2.0 0.00015400745 0.24 AML other m 2020-10-27T02:15:53.92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download