Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 09-06-2020 and time 09:08:31 (Italy) in region 6 km E Palazzuolo sul Senio (FI)

A magnitude ML 1.6 earthquake occured in region: 6 km E Palazzuolo sul Senio (FI), on

  • 09-06-2020 07:08:31 (UTC)
  • 09-06-2020 09:08:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1370, 11.6210 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 6 1154 1154
Marradi FI 7 3139 4293
Casola Valsenio RA 10 2617 6910
Tredozio FC 12 1212 8122
Castel del Rio BO 13 1246 9368
Modigliana FC 14 4560 13928
Fontanelice BO 14 1943 15871
Brisighella RA 15 7639 23510
Borgo Tossignano BO 16 3288 26798
Riolo Terme RA 18 5720 32518
Portico e San Benedetto FC 18 756 33274
Casalfiumanese BO 18 3438 36712
Firenzuola FI 19 4726 41438
Rocca San Casciano FC 20 1910 43348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SW of Imola (69797 inhabitants)
27 Km SW of Faenza (58541 inhabitants)
35 Km W of Forlì (117913 inhabitants)
46 Km SE of Bologna (386663 inhabitants)
50 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)
76 Km W of Rimini (147750 inhabitants)
77 Km N of Arezzo (99543 inhabitants)
78 Km S of Ferrara (133155 inhabitants)
79 Km SE of Modena (184973 inhabitants)
93 Km SE of Carpi (70699 inhabitants)
94 Km N of Siena (53903 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
Bulletin
Rev1000 		ML 1.6 2020-06-09
07:08:31		 44.1368 11.6208 10 2020-11-19
12:36:49		 Bollettino Sismico Italiano INGV 80406101
Reviewed
Rev100 		ML 1.6 2020-06-09
07:08:31		 44.1388 11.6223 10 2020-06-09
07:17:20		 Sala Sismica INGV-Roma 80021971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-09 07:08:31 ± 0.09
Latitude 44.1368 ± 0.0054
Longitude 11.6208 ± 0.0063
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80406101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 532
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 343
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 0.36063
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 80406101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-22 14:13:46

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 80021971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-09 07:17:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2020-06-09T07:08:45.03 0.3 undecidable manual S 160 40.0266 50 0.4 67
IV.RUFI.EHZ. 2020-06-09T07:08:43.09 0.1 undecidable manual S 195 34.3434 50 -0.01 98
IV.SFI.EHZ. 2020-06-09T07:08:42.51 0.1 undecidable manual S 145 31.4463 50 0.18 95
IV.RONT.HHZ. 2020-06-09T07:08:39.95 0.1 undecidable manual S 223 21.867 114 0.55 88
IV.SEI.HHZ. 2020-06-09T07:08:39.76 0.3 undecidable manual S 246 22.8549 113 0.05 74
IV.ASQU.HHZ. 2020-06-09T07:08:38.70 0.1 undecidable manual P 160 40.0266 50 -0.22 92
IV.IMOL.HNZ. 2020-06-09T07:08:37.09 0.3 undecidable manual P 21 26.5512 110 0.31 70
IV.VISG.HHZ. 2020-06-09T07:08:37.28 0.1 undecidable manual S 291 15.9729 121 -0.29 95
IV.SFI.EHZ. 2020-06-09T07:08:37.31 0.1 undecidable manual P 145 31.4463 50 -0.28 93
IV.BRIS.HHZ. 2020-06-09T07:08:37.43 0.1 undecidable manual S 50 15.1737 122 0.1 99
IV.RUFI.EHZ. 2020-06-09T07:08:37.73 0.1 undecidable manual P 195 34.3434 50 -0.31 92
IV.MTRZ.HNZ. 2020-06-09T07:08:37.04 0.1 undecidable manual P 321 24.9528 111 0.55 88
IV.LMD.HHZ. 2020-06-09T07:08:35.69 0.1 undecidable manual S 134 9.4794 135 -0.12 100
IV.SEI.HHZ. 2020-06-09T07:08:35.81 0.1 undecidable manual P 246 22.8549 113 -0.27 94
IV.RONT.HHZ. 2020-06-09T07:08:35.96 0.1 undecidable manual P 223 21.867 114 0.06 99
IV.BRIS.HHZ. 2020-06-09T07:08:34.63 0.1 positive manual P 50 15.1737 122 -0.08 99
IV.VISG.HHZ. 2020-06-09T07:08:34.61 0.1 positive manual P 291 15.9729 121 -0.24 96
IV.LMD.HHZ. 2020-06-09T07:08:33.73 0.1 positive manual P 134 9.4794 135 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:1.4 0.0002395 0.98 AML other m 2020-06-09T07:08:37.91
IV.VISG.HHE. ML:1.3 0.000182 0.4 AML other m 2020-06-09T07:08:37.47
IV.BRIS.HHE. ML:2.0 0.0009205 0.34 AML other m 2020-06-09T07:08:37.76
IV.BRIS.HHN. ML:1.9 0.0007484999999999999 0.24 AML other m 2020-06-09T07:08:37.61
IV.SEI.HHN. ML:1.9 0.0005304999999999999 0.32 AML other m 2020-06-09T07:08:40.20
IV.RONT.HHN. ML:1.9 0.0004955000000000001 0.9 AML other m 2020-06-09T07:08:40.26
IV.SEI.HHE. ML:1.6 0.00023199999999999997 0.5 AML other m 2020-06-09T07:08:40.72
IV.RONT.HHE. ML:1.8 0.0004465 0.3 AML other m 2020-06-09T07:08:41.79
IV.SFI.EHE. ML:1.3 0.00008274999999999999 0.58 AML other m 2020-06-09T07:08:43.06
IV.SFI.EHN. ML:1.2 0.0000652 0.12 AML other m 2020-06-09T07:08:43.09
IV.ASQU.HHN. ML:1.4 0.00008035 0.18 AML other m 2020-06-09T07:08:46.00
IV.ASQU.HHE. ML:1.4 0.00008335 0.98 AML other m 2020-06-09T07:08:46.74
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