Earthquake with magnitude of ML 1.1 on date 24-05-2020 and time 03:57:42 (UTC) in region 4 km S Castel di Casio (BO)

A magnitude ML 1.1 earthquake occured in region: 4 km S Castel di Casio (BO), on

  • 24-05-2020 03:57:42 (UTC)
  • 24-05-2020 05:57:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.13, 11.05 at 11 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
Castel di Casio BO 4 3448 3448
Sambuca Pistoiese PT 5 1626 5074
Camugnano BO 6 1885 6959
Alto Reno Terme BO 7 6960 13919
Castiglione dei Pepoli BO 9 5648 19567
Cantagallo PO 12 3105 22672
Vernio PO 12 6060 28732
Gaggio Montano BO 12 4878 33610
Lizzano in Belvedere BO 13 2212 35822
Grizzana Morandi BO 17 3916 39738
Castel d'Aiano BO 18 1906 41644
San Benedetto Val di Sambro BO 18 4315 45959
Montese MO 18 3353 49312
Vergato BO 18 7639 56951
Vaiano PO 19 9895 66846

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Pistoia (90315 inhabitants)
28 Km N of Prato (191150 inhabitants)
42 Km N of Scandicci (50609 inhabitants)
43 Km NW of Firenze (382808 inhabitants)
47 Km SW of Bologna (386663 inhabitants)
54 Km NE of Lucca (89046 inhabitants)
59 Km S of Modena (184973 inhabitants)
59 Km W of Imola (69797 inhabitants)
69 Km W of Faenza (58541 inhabitants)
69 Km NE of Pisa (89158 inhabitants)
70 Km E of Viareggio (62467 inhabitants)
72 Km SE of Reggio nell'Emilia (171345 inhabitants)
73 Km E of Massa (69479 inhabitants)
74 Km S of Carpi (70699 inhabitants)
76 Km E of Carrara (63133 inhabitants)
80 Km W of Forlì (117913 inhabitants)
87 Km NE of Livorno (159219 inhabitants)
91 Km SW of Ferrara (133155 inhabitants)
93 Km N of Siena (53903 inhabitants)
94 Km SE of Parma (192836 inhabitants)
95 Km W of Cesena (96758 inhabitants)
97 Km W of Ravenna (159116 inhabitants)
97 Km E of La Spezia (93959 inhabitants)
99 Km NW of Arezzo (99543 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
Reviewed
Rev100
ML 1.1 2020-05-24
03:57:42
44.13 11.05 11 2020-05-24
04:03:16
Sala Sismica INGV-Roma 79498891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-24 03:57:42 ± 0.08
Latitude 44.13 ± 0.00
Longitude 11.05 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79498891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 460
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) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 79498891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-24 04:03:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VISG.HHZ. 2020-05-24T03:57:53.44 0.3 undecidable manual S 77 0.2833 50 0 74
IV.ZCCA.HNZ. 2020-05-24T03:57:52.15 0.6 undecidable manual S 347 0.2293 50 0.31 47
GU.POPM.HHZ. 2020-05-24T03:57:51.45 0.3 undecidable manual S 249 0.2248 50 -0.28 71
IV.SEI.HHZ. 2020-05-24T03:57:51.94 0.3 undecidable manual S 108 0.2338 50 -0.04 74
IV.MPPT.EHZ. 2020-05-24T03:57:50.40 0.3 undecidable manual S 170 0.1727 119 0.28 71
IV.VISG.HHZ. 2020-05-24T03:57:48.76 0.3 positive manual P 77 0.2833 50 -0.06 73
IV.ZCCA.HNZ. 2020-05-24T03:57:48.26 0.3 undecidable manual P 347 0.2293 50 0.37 69
IV.MPPT.EHZ. 2020-05-24T03:57:47.02 0.1 positive manual P 170 0.1727 119 0.12 98
GU.POPM.HHZ. 2020-05-24T03:57:47.69 0.3 undecidable manual P 249 0.2248 50 -0.14 73
IV.SEI.HHZ. 2020-05-24T03:57:47.80 0.6 undecidable manual P 108 0.2338 50 -0.18 48
IV.FNVD.HHZ. 2020-05-24T03:57:46.83 0.3 undecidable manual S 53 0.0665 145 -0.18 74
IV.FNVD.HHZ. 2020-05-24T03:57:44.98 0.1 undecidable manual P 53 0.0665 145 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FNVD.HHE. ML:1.5 0.0004175 0.3 AML other m 2020-05-24T03:57:47.52
IV.FNVD.HHN. ML:1.6 0.000647 1.18 AML other m 2020-05-24T03:57:47.09
IV.MPPT.EHE. ML:1.1 0.00010745 0.58 AML other m 2020-05-24T03:57:50.46
IV.MPPT.EHN. ML:1.2 0.000119 0.22 AML other m 2020-05-24T03:57:50.54
GU.POPM.HHE. ML:1.3 0.00011175 0.22 AML other m 2020-05-24T03:57:51.56
GU.POPM.HHN. ML:1.2 8.31E-5 1.58 AML other m 2020-05-24T03:57:51.87
IV.SEI.HHE. ML:0.8 3.585E-5 1.22 AML other m 2020-05-24T03:57:53.82
IV.SEI.HHN. ML:1 5.615E-5 0.42 AML other m 2020-05-24T03:57:55.40
IV.VISG.HHE. ML:0.3 9.89002345E-6 0.7392 AML other m 2020-05-24T03:57:54.67
IV.VISG.HHN. ML:0 7.481761E-6 0.64 AML other m 2020-05-24T03:57:53.75
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