Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 03-06-2020 and time 09:01:59 (UTC) in region 8 km N Marradi (FI)

A magnitude ML 1.2 earthquake occured in region: 8 km N Marradi (FI), on

  • 03-06-2020 09:01:59 (UTC)
  • 03-06-2020 11:01:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1430, 11.6340 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.

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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
Palazzuolo sul Senio FI 8 1154 1154
Marradi FI 8 3139 4293
Casola Valsenio RA 9 2617 6910
Tredozio FC 11 1212 8122
Modigliana FC 13 4560 12682
Castel del Rio BO 13 1246 13928
Brisighella RA 14 7639 21567
Fontanelice BO 14 1943 23510
Borgo Tossignano BO 16 3288 26798
Riolo Terme RA 17 5720 32518
Casalfiumanese BO 17 3438 35956
Portico e San Benedetto FC 18 756 36712
Rocca San Casciano FC 19 1910 38622

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km S of Imola (69797 inhabitants)
26 Km SW of Faenza (58541 inhabitants)
34 Km W of Forlì (117913 inhabitants)
46 Km SE of Bologna (386663 inhabitants)
49 Km W of Cesena (96758 inhabitants)
51 Km NE of Firenze (382808 inhabitants)
52 Km NE of Prato (191150 inhabitants)
55 Km SW of Ravenna (159116 inhabitants)
56 Km NE of Scandicci (50609 inhabitants)
62 Km E of Pistoia (90315 inhabitants)
75 Km W of Rimini (147750 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
78 Km N of Arezzo (99543 inhabitants)
79 Km SE of Modena (184973 inhabitants)
93 Km SE of Carpi (70699 inhabitants)
95 Km N of Siena (53903 inhabitants)
96 Km E of Lucca (89046 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 1.2 2020-06-03
09:01:59		 44.1427 11.6343 10 2020-06-03
09:07:03		 Sala Sismica INGV-Roma 79853451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-03 09:01:59 ± 0.09
Latitude 44.1427 ± 0.0045
Longitude 11.6343 ± 0.0038
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79853451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 546
Semi-minor axis of confidence ellipse (meter) 252
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) 213
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36333
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79853451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-03 09:07:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-06-03T09:02:30.04 3.0 undecidable manual S 0.27 0
IV.NDIM.HNZ. 2020-06-03T09:02:14.34 3.0 undecidable manual P -0.29 0
IV.ASQU.HHZ. 2020-06-03T09:02:13.14 0.3 undecidable manual S 162 40.3263 50 0.05 71
IV.SFI.EHZ. 2020-06-03T09:02:10.69 0.6 undecidable manual S 147 31.3464 50 -0.01 49
IV.RINC.HHZ. 2020-06-03T09:02:09.79 0.3 undecidable manual S 184 28.5492 50 -0.15 71
IV.SEI.HHZ. 2020-06-03T09:02:08.49 0.3 undecidable manual S 246 24.0537 112 -0.12 72
IV.RONT.HHZ. 2020-06-03T09:02:08.47 0.3 undecidable manual S 224 23.0547 113 0.19 71
IV.ASQU.HHZ. 2020-06-03T09:02:07.73 0.3 undecidable manual P 162 40.3263 50 0.34 67
IV.VISG.HHZ. 2020-06-03T09:02:06.32 0.3 undecidable manual S 288 16.7721 120 0 75
IV.RINC.HHZ. 2020-06-03T09:02:05.53 0.6 undecidable manual P 184 28.5492 50 -0.04 49
IV.SFI.EHZ. 2020-06-03T09:02:05.76 0.6 undecidable manual P 147 31.3464 50 -0.25 46
IV.SEI.HHZ. 2020-06-03T09:02:04.66 0.1 positive manual P 246 24.0537 112 -0.14 96
IV.LMD.HHZ. 2020-06-03T09:02:04.21 0.1 undecidable manual S 141 9.2796 137 -0.06 100
IV.RONT.HHZ. 2020-06-03T09:02:04.69 0.3 negative manual P 224 23.0547 113 0.08 73
IV.VISG.HHZ. 2020-06-03T09:02:03.52 0.1 positive manual P 288 16.7721 120 0.05 99
IV.LMD.HHZ. 2020-06-03T09:02:02.33 0.3 positive manual P 141 9.2796 137 0.04 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.1 0.0001715 0.7 AML other m 2020-06-03T09:02:04.81
IV.VISG.HHN. ML:1.3 0.0001715 0.94 AML other m 2020-06-03T09:02:06.90
IV.VISG.HHE. ML:1.1 0.00012245 1.18 AML other m 2020-06-03T09:02:07.62
IV.LMD.HHN. ML:1.1 0.000182 0.22 AML other m 2020-06-03T09:02:07.02
IV.RONT.HHE. ML:1.6 0.00028300000000000005 0.6 AML other m 2020-06-03T09:02:08.59
IV.RONT.HHN. ML:1.7 0.00029800000000000003 1.2 AML other m 2020-06-03T09:02:08.94
IV.SEI.HHN. ML:1.7 0.0003305 0.38 AML other m 2020-06-03T09:02:08.97
IV.RINC.HHN. ML:0.8 0.0000373 0.78 AML other m 2020-06-03T09:02:10.50
IV.SEI.HHE. ML:1.4 0.00016299999999999998 0.36 AML other m 2020-06-03T09:02:10.35
IV.RINC.HHE. ML:1.1 0.00006145 0.88 AML other m 2020-06-03T09:02:11.18
IV.SFI.EHN. ML:0.7 0.00002375 0.36 AML other m 2020-06-03T09:02:11.67
IV.SFI.EHE. ML:0.6 0.000021900000000000004 0.84 AML other m 2020-06-03T09:02:11.45
IV.ASQU.HHN. ML:0.9 0.000026450000000000003 0.48 AML other m 2020-06-03T09:02:14.47
IV.ASQU.HHE. ML:0.8 0.00002095 0.82 AML other m 2020-06-03T09:02:14.72
IV.NARO.HHN. ML:1.6 0.00004245 0.06 AML other m 2020-06-03T09:02:50.37
IV.NARO.HHE. ML:1.5 0.00003695 0.06 AML other m 2020-06-03T09:02:50.53
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