Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 21-01-2020 and time 00:43:59 (Italy) in region 2 km SE Castiglione dei Pepoli (BO)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Castiglione dei Pepoli (BO), on

  • 20-01-2020 23:43:59 (UTC)
  • 21-01-2020 00:43:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1320, 11.1800 at 9 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 2 5648 5648
Camugnano BO 9 1885 7533
Vernio PO 9 6060 13593
San Benedetto Val di Sambro BO 10 4315 17908
Castel di Casio BO 12 3448 21356
Cantagallo PO 13 3105 24461
Grizzana Morandi BO 14 3916 28377
Sambuca Pistoiese PT 15 1626 30003
Monghidoro BO 15 3749 33752
Barberino di Mugello FI 15 10836 44588
Firenzuola FI 16 4726 49314
Alto Reno Terme BO 16 6960 56274
Monzuno BO 18 6328 62602
Vergato BO 18 7639 70241
Vaiano PO 19 9895 80136
Loiano BO 19 4294 84430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Prato (191150 inhabitants)
30 Km NE of Pistoia (90315 inhabitants)
41 Km N of Firenze (382808 inhabitants)
41 Km N of Scandicci (50609 inhabitants)
43 Km SW of Bologna (386663 inhabitants)
49 Km SW of Imola (69797 inhabitants)
59 Km W of Faenza (58541 inhabitants)
61 Km SE of Modena (184973 inhabitants)
63 Km NE of Lucca (89046 inhabitants)
70 Km W of Forlì (117913 inhabitants)
76 Km SE of Carpi (70699 inhabitants)
77 Km SE of Reggio nell'Emilia (171345 inhabitants)
78 Km NE of Pisa (89158 inhabitants)
80 Km E of Viareggio (62467 inhabitants)
84 Km E of Massa (69479 inhabitants)
85 Km W of Cesena (96758 inhabitants)
86 Km SW of Ferrara (133155 inhabitants)
87 Km E of Carrara (63133 inhabitants)
87 Km W of Ravenna (159116 inhabitants)
91 Km N of Siena (53903 inhabitants)
93 Km NW of Arezzo (99543 inhabitants)
95 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 1.4 2020-01-20
23:43:59		 44.1317 11.18 9 2020-07-18
21:08:21		 Bollettino Sismico Italiano INGV 76672441
Reviewed
Rev100 		ML 1.5 2020-01-20
23:43:59		 44.1328 11.1785 10 2020-01-20
23:52:27		 Sala Sismica INGV-Roma 75689031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-20 23:43:59 ± 0.08
Latitude 44.1317 ± 0.0054
Longitude 11.1800 ± 0.0050
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76672441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 551
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 20
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76672441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-20 13:25:37

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 75689031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-20 23:52:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RUFI.EHZ. 2020-01-20T23:44:13.24 0.6 undecidable manual S 141 41.8248 50 -0.07 47
GU.POPM.HHZ. 2020-01-20T23:44:11.05 0.3 undecidable manual S 254 35.0427 50 -0.45 67
IV.RONT.HHZ. 2020-01-20T23:44:08.85 0.6 undecidable manual S 127 25.3524 110 0.2 47
IV.MPPT.EHZ. 2020-01-20T23:44:07.21 0.6 undecidable manual S 200 20.5683 114 0.08 49
IV.VISG.HHZ. 2020-01-20T23:44:07.04 0.3 undecidable manual S 72 21.1677 114 -0.29 69
IV.RUFI.EHZ. 2020-01-20T23:44:07.89 0.6 undecidable manual P 141 41.8248 50 0.5 41
GU.POPM.HHZ. 2020-01-20T23:44:06.18 0.3 undecidable manual P 254 35.0427 50 -0.16 70
IV.MTRZ.HHZ. 2020-01-20T23:44:05.51 0.3 undecidable manual P 44 27.9498 108 0.31 68
IV.SEI.HHZ. 2020-01-20T23:44:05.96 0.3 undecidable manual S 121 16.5723 119 0.07 74
IV.ZCCA.HNZ. 2020-01-20T23:44:05.85 0.3 undecidable manual P 326 29.2485 108 0.42 65
IV.RONT.HHZ. 2020-01-20T23:44:04.39 0.6 undecidable manual P 127 25.3524 110 -0.3 46
IV.MPPT.EHZ. 2020-01-20T23:44:03.96 0.3 undecidable manual P 200 20.5683 114 0.14 72
IV.SEI.HHZ. 2020-01-20T23:44:03.10 0.1 undecidable manual P 121 16.5723 119 0 98
IV.VISG.HHZ. 2020-01-20T23:44:03.68 0.1 positive manual P 72 21.1677 114 -0.25 93
IV.FNVD.HHZ. 2020-01-20T23:44:03.16 0.3 undecidable manual S 311 6.0939 147 0.02 74
IV.FNVD.HHZ. 2020-01-20T23:44:01.60 0.1 undecidable manual P 311 6.0939 147 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHN. ML:1.8 0.0005993237500000001 0.2432 AML other m 2020-01-20T23:44:06.25
IV.SEI.HHE. ML:1.7 0.00043215665 0.3584 AML other m 2020-01-20T23:44:07.46
IV.VISG.HHE. ML:1.0 0.00007717712 0.1792 AML other m 2020-01-20T23:44:07.21
IV.VISG.HHN. ML:1.2 0.000114160235 0.128 AML other m 2020-01-20T23:44:07.72
IV.RONT.HHN. ML:1.6 0.0002248233 0.1408 AML other m 2020-01-20T23:44:10.39
IV.RONT.HHE. ML:1.5 0.00017423643999999998 0.1664 AML other m 2020-01-20T23:44:10.78
GU.POPM.HHN. ML:1.4 0.00008912029499999999 0.1664 AML other m 2020-01-20T23:44:11.74
GU.POPM.HHE. ML:1.4 0.00009736112 0.1024 AML other m 2020-01-20T23:44:11.74
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