Earthquake with magnitude of ML 1.8 on date 21-01-2020 and time 03:04:27 (UTC) in region 3 km SE Castiglione dei Pepoli (BO)

A magnitude ML 1.8 earthquake occured in region: 3 km SE Castiglione dei Pepoli (BO), on

  • 21-01-2020 03:04:27 (UTC)
  • 21-01-2020 04:04:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.13, 11.18 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Castiglione dei Pepoli BO 3 5648 5648
Vernio PO 8 6060 11708
Camugnano BO 9 1885 13593
San Benedetto Val di Sambro BO 11 4315 17908
Cantagallo PO 12 3105 21013
Castel di Casio BO 13 3448 24461
Barberino di Mugello FI 15 10836 35297
Grizzana Morandi BO 15 3916 39213
Sambuca Pistoiese PT 15 1626 40839
Monghidoro BO 15 3749 44588
Firenzuola FI 16 4726 49314
Alto Reno Terme BO 17 6960 56274
Vaiano PO 18 9895 66169
Monzuno BO 18 6328 72497
Vergato BO 19 7639 80136
Loiano BO 20 4294 84430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Prato (191150 inhabitants)
30 Km NE of Pistoia (90315 inhabitants)
40 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 E of Lucca (89046 inhabitants)
69 Km W of Forlì (117913 inhabitants)
77 Km SE of Carpi (70699 inhabitants)
77 Km SE of Reggio nell'Emilia (171345 inhabitants)
77 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)
92 Km NW of Arezzo (99543 inhabitants)
95 Km NE of Livorno (159219 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.8 2020-01-21
03:04:27
44.13 11.18 10 2020-01-21
03:12:36
Sala Sismica INGV-Roma 75691601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-21 03:04:27 ± 0.11
Latitude 44.13 ± 0.01
Longitude 11.18 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75691601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 706
Semi-minor axis of confidence ellipse (meter) 615
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 710
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
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) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.14389
Epicentral distance of station farthest from the epicenter (degree) 0.62323
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 75691601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-21 03:12:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RUFI.EHZ. 2020-01-21T03:04:40.69 0.3 undecidable manual S 141 0.3705 50 -0.42 65
GU.POPM.HHZ. 2020-01-21T03:04:39.24 0.3 undecidable manual S 255 0.3175 50 -0.28 68
IV.PII.HHZ. 2020-01-21T03:04:39.44 0.3 undecidable manual P 230 0.6232 50 -0.23 65
IV.RONT.HHZ. 2020-01-21T03:04:37.05 0.3 undecidable manual S 126 0.2221 50 0.34 70
IV.BDI.HHZ. 2020-01-21T03:04:36.24 0.1 undecidable manual P 262 0.4272 50 -0.08 93
IV.BRIS.HHZ. 2020-01-21T03:04:36.79 0.1 undecidable manual P 77 0.429 50 0.44 87
IV.RUFI.EHZ. 2020-01-21T03:04:35.76 0.3 undecidable manual P 141 0.3705 50 0.4 67
IV.VISG.HHZ. 2020-01-21T03:04:35.24 0.3 undecidable manual S 71 0.1898 116 -0.39 69
IV.MPPT.EHZ. 2020-01-21T03:04:35.52 0.3 undecidable manual S 202 0.1817 117 0.18 71
IV.ZCCA.HNZ. 2020-01-21T03:04:34.12 0.1 undecidable manual P 327 0.2698 50 0.5 88
IV.SEI.HHZ. 2020-01-21T03:04:34.18 0.3 undecidable manual S 120 0.1439 123 0.09 73
GU.POPM.HHZ. 2020-01-21T03:04:34.27 0.1 undecidable manual P 255 0.3175 50 -0.17 93
IV.MPPT.EHZ. 2020-01-21T03:04:32.10 0.1 undecidable manual P 202 0.1817 117 0.08 97
IV.RONT.HHZ. 2020-01-21T03:04:32.76 0.1 undecidable manual P 126 0.2221 50 -0.05 97
IV.VISG.HHZ. 2020-01-21T03:04:31.86 0.1 undecidable manual P 71 0.1898 116 -0.33 93
IV.SEI.HHZ. 2020-01-21T03:04:31.27 0.1 undecidable manual P 120 0.1439 123 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHN. ML:2.1 0.00127 0.32 AML other m 2020-01-21T03:04:34.47
IV.SEI.HHE. ML:2.1 0.001125 0.34 AML other m 2020-01-21T03:04:35.60
IV.VISG.HHN. ML:1.6 0.000299 0.38 AML other m 2020-01-21T03:04:35.49
IV.VISG.HHE. ML:1.5 0.0002105 1.28 AML other m 2020-01-21T03:04:35.72
IV.MPPT.EHE. ML:1.7 0.000395 0.22 AML other m 2020-01-21T03:04:35.78
IV.MPPT.EHN. ML:1.9 0.0006135 1.5 AML other m 2020-01-21T03:04:36.90
IV.RONT.HHN. ML:1.9 0.0005085 0.14 AML other m 2020-01-21T03:04:38.49
IV.RONT.HHE. ML:1.9 0.000433 1.04 AML other m 2020-01-21T03:04:38.87
GU.POPM.HHE. ML:1.5 0.000136 1.14 AML other m 2020-01-21T03:04:39.42
GU.POPM.HHN. ML:1.7 0.000203 1.4 AML other m 2020-01-21T03:04:40.92
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download