Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-04-2022 and time 15:52:33 (UTC) in region 6 km E Monghidoro (BO)

A magnitude ML 1.0 earthquake occured in region: 6 km E Monghidoro (BO), on

  • 20-04-2022 15:52:33 (UTC)
  • 20-04-2022 17:52:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1990, 11.3800 at 20 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.

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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
Monghidoro BO 6 3749 3749
Firenzuola FI 9 4726 8475
Loiano BO 9 4294 12769
Castel del Rio BO 10 1246 14015
San Benedetto Val di Sambro BO 12 4315 18330
Monzuno BO 12 6328 24658
Monterenzio BO 14 6035 30693
Fontanelice BO 16 1943 32636
Palazzuolo sul Senio FI 16 1154 33790
Borgo Tossignano BO 19 3288 37078
Castiglione dei Pepoli BO 19 5648 42726
Grizzana Morandi BO 19 3916 46642
Casola Valsenio RA 20 2617 49259

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Imola (69797 inhabitants)
33 Km S of Bologna (386663 inhabitants)
41 Km W of Faenza (58541 inhabitants)
42 Km NE of Prato (191150 inhabitants)
47 Km NE of Pistoia (90315 inhabitants)
49 Km N of Firenze (382808 inhabitants)
51 Km NE of Scandicci (50609 inhabitants)
53 Km W of Forlì (117913 inhabitants)
62 Km SE of Modena (184973 inhabitants)
69 Km W of Cesena (96758 inhabitants)
70 Km W of Ravenna (159116 inhabitants)
74 Km S of Ferrara (133155 inhabitants)
76 Km SE of Carpi (70699 inhabitants)
80 Km E of Lucca (89046 inhabitants)
81 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km NW of Arezzo (99543 inhabitants)
95 Km NE of Pisa (89158 inhabitants)
96 Km W of Rimini (147750 inhabitants)
98 Km E of Viareggio (62467 inhabitants)
98 Km N of Siena (53903 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
Reviewed
Rev100 		ML 1.0 2022-04-20
15:52:33		 44.1988 11.3803 20 2022-04-20
15:58:10		 Sala Sismica INGV-Roma 103535541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-20 15:52:33 ± 0.47
Latitude 44.1988 ± 0.0153
Longitude 11.3803 ± 0.0238
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 103535541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1930
Semi-minor axis of confidence ellipse (meter) 816
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 1930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.27789
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:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 103535541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-20 15:58:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LMD.HHZ. 2022-04-20T15:52:43.88 0.3 undecidable manual S 117 29.2485 114 -0.04 97
IV.MTRZ.HHZ. 2022-04-20T15:52:41.21 0.3 undecidable manual S 16 13.1757 140 0.77 81
IV.SEI.HHZ. 2022-04-20T15:52:41.66 0.3 undecidable manual S 186 16.1727 134 0.68 85
IV.LMD.HHZ. 2022-04-20T15:52:39.50 0.3 undecidable manual P 117 29.2485 114 0.14 95
IV.BRIS.HHZ. 2022-04-20T15:52:39.70 0.3 undecidable manual P 85 30.8469 113 0.12 95
IV.VISG.HHZ. 2022-04-20T15:52:38.75 0.3 undecidable manual S 104 4.3956 165 -0.61 88
IV.FNVD.HHZ. 2022-04-20T15:52:38.08 0.3 undecidable manual P 261 20.7681 125 -0.14 97
IV.MTRZ.HHZ. 2022-04-20T15:52:37.06 0.3 undecidable manual P 16 13.1757 140 -0.29 95
IV.SEI.HHZ. 2022-04-20T15:52:37.68 0.3 undecidable manual P 186 16.1727 134 0.01 100
IV.VISG.HHZ. 2022-04-20T15:52:36.18 0.3 undecidable manual P 104 4.3956 165 -0.55 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:0.7 0.00004352582 0.0512 AML other m 2022-04-20T15:52:39.44
IV.VISG.HHE. ML:0.6 0.00003184876 0.0768 AML other m 2022-04-20T15:52:39.88
IV.MTRZ.HHE. ML:1.3 0.00013550000000000001 1.02 AML other m 2022-04-20T15:52:41.58
IV.SEI.HHE. ML:1.2 0.0000876 0.32 AML other m 2022-04-20T15:52:41.72
IV.SEI.HHN. ML:1.4 0.000144 0.22 AML other m 2022-04-20T15:52:41.97
IV.MTRZ.HHN. ML:1.2 0.00012011946499999999 0.2688 AML other m 2022-04-20T15:52:41.46
IV.LMD.HHN. ML:0.7 0.00002245 1.58 AML other m 2022-04-20T15:52:44.11
IV.LMD.HHE. ML:0.6 0.000015692865 0.9472 AML other m 2022-04-20T15:52:44.79
IV.MTRZ.HNN. ML:1.2 0.00011296651000000001 0.2304 AML other m 2022-04-20T15:52:41.46
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