Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 09-06-2020 and time 10:23:58 (Italy) in region 6 km N Marradi (FI)

A magnitude ML 1.2 earthquake occured in region: 6 km N Marradi (FI), on

  • 09-06-2020 08:23:58 (UTC)
  • 09-06-2020 10:23:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1300, 11.6280 at 9 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
Marradi FI 6 3139 3139
Palazzuolo sul Senio FI 7 1154 4293
Casola Valsenio RA 11 2617 6910
Tredozio FC 11 1212 8122
Castel del Rio BO 14 1246 9368
Modigliana FC 14 4560 13928
Brisighella RA 15 7639 21567
Fontanelice BO 15 1943 23510
Borgo Tossignano BO 17 3288 26798
Portico e San Benedetto FC 17 756 27554
Riolo Terme RA 18 5720 33274
Casalfiumanese BO 19 3438 36712
Rocca San Casciano FC 19 1910 38622
Firenzuola FI 20 4726 43348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km S of Imola (69797 inhabitants)
27 Km SW of Faenza (58541 inhabitants)
35 Km W of Forlì (117913 inhabitants)
47 Km SE of Bologna (386663 inhabitants)
49 Km W of Cesena (96758 inhabitants)
50 Km NE of Firenze (382808 inhabitants)
51 Km NE of Prato (191150 inhabitants)
55 Km NE of Scandicci (50609 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
61 Km E of Pistoia (90315 inhabitants)
75 Km W of Rimini (147750 inhabitants)
76 Km N of Arezzo (99543 inhabitants)
79 Km S of Ferrara (133155 inhabitants)
80 Km SE of Modena (184973 inhabitants)
93 Km N of Siena (53903 inhabitants)
94 Km SE of Carpi (70699 inhabitants)
95 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 2020-06-09
08:23:58		 44.1297 11.6277 9 2020-06-09
08:31:23		 Sala Sismica INGV-Roma 80023081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-09 08:23:58 ± 0.12
Latitude 44.1297 ± 0.0081
Longitude 11.6277 ± 0.0088
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80023081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 789
Semi-minor axis of confidence ellipse (meter) 693
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.44516
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 80023081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-09 08:31:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHN. 2020-06-09T08:24:11.73 0.6 undecidable manual S 161 39.1275 50 0.31 46
IV.SFI.EHZ. 2020-06-09T08:24:09.37 0.6 undecidable manual S 145 30.4473 50 0.26 47
IV.MTRZ.HHN. 2020-06-09T08:24:09.00 0.6 undecidable manual S 322 25.9518 110 1.33 31
IV.RUFI.EHE. 2020-06-09T08:24:09.84 0.6 undecidable manual S 196 33.744 50 -0.13 48
IV.MPPT.EHN. 2020-06-09T08:24:07.98 0.1 undecidable manual P 246 46.9197 50 0.99 71
IV.FIR.HHZ. 2020-06-09T08:24:07.55 0.6 undecidable manual P 217 49.4172 50 0.18 46
IV.RONT.HHZ. 2020-06-09T08:24:06.75 0.6 undecidable manual S 226 21.6672 113 0.46 46
IV.SEI.HHZ. 2020-06-09T08:24:06.70 0.6 undecidable manual S 249 22.9548 112 -0.02 50
IV.ASQU.HHN. 2020-06-09T08:24:05.60 0.1 undecidable manual P 161 39.1275 50 -0.19 94
IV.FNVD.HHZ. 2020-06-09T08:24:05.70 0.1 undecidable manual P 276 40.4262 50 -0.29 92
IV.VISG.HHZ. 2020-06-09T08:24:04.21 0.6 undecidable manual S 293 16.7721 119 -0.54 45
IV.BRIS.HHZ. 2020-06-09T08:24:04.33 0.6 undecidable manual S 46 15.2736 121 0.02 51
IV.SFI.EHZ. 2020-06-09T08:24:04.33 1.0 negative manual P 145 30.4473 50 -0.13 24
IV.RUFI.EHE. 2020-06-09T08:24:04.35 0.1 undecidable manual P 196 33.744 50 -0.61 85
IV.MTRZ.HHN. 2020-06-09T08:24:03.94 1.0 undecidable manual P 322 25.9518 110 0.3 24
IV.LMD.HHZ. 2020-06-09T08:24:02.68 0.6 undecidable manual S 132 8.5803 137 0.18 50
IV.SEI.HHZ. 2020-06-09T08:24:02.79 0.1 positive manual P 249 22.9548 112 -0.3 95
IV.RONT.HHZ. 2020-06-09T08:24:02.98 0.3 undecidable manual P 226 21.6672 113 0.15 74
IV.VISG.HHZ. 2020-06-09T08:24:01.55 0.3 positive manual P 293 16.7721 119 -0.4 70
IV.BRIS.HHZ. 2020-06-09T08:24:01.59 0.1 positive manual P 46 15.2736 121 -0.1 100
IV.LMD.HHZ. 2020-06-09T08:24:00.69 0.3 positive manual P 132 8.5803 137 0.04 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.1 0.00020050000000000002 0.46 AML other m 2020-06-09T08:24:02.76
IV.LMD.HHN. ML:0.9 0.00011495 0.2 AML other m 2020-06-09T08:24:03.11
IV.VISG.HHN. ML:1.0 0.00008125 1 AML other m 2020-06-09T08:24:04.83
IV.VISG.HHE. ML:0.9 0.00007235 0.4 AML other m 2020-06-09T08:24:04.59
IV.BRIS.HHE. ML:1.4 0.000266 0.36 AML other m 2020-06-09T08:24:04.65
IV.BRIS.HHN. ML:1.4 0.00022099999999999998 1.4 AML other m 2020-06-09T08:24:04.08
IV.SEI.HHN. ML:1.4 0.000185 0.32 AML other m 2020-06-09T08:24:07.12
IV.SEI.HHE. ML:1.2 0.00009884999999999999 0.38 AML other m 2020-06-09T08:24:07.63
IV.RONT.HHE. ML:1.4 0.00016450000000000001 0.68 AML other m 2020-06-09T08:24:07.83
IV.RONT.HHN. ML:1.4 0.0001965 1.18 AML other m 2020-06-09T08:24:08.01
IV.SFI.HNE. ML:1.3 0.000096202935 2.1504 AML other m 2020-06-09T08:24:10.75
IV.SFI.HNN. ML:1.2 0.00007084331000000001 1.4208 AML other m 2020-06-09T08:24:09.71
IV.SFI.EHE. ML:0.7 0.000024387224999999998 0.1408 AML other m 2020-06-09T08:24:09.89
IV.SFI.EHN. ML:0.5 0.000015894183999999997 0.3008 AML other m 2020-06-09T08:24:09.83
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