Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-05-2020 and time 11:46:23 (Italy) in region 3 km NW Tredozio (FC)

A magnitude ML 2.0 earthquake occured in region: 3 km NW Tredozio (FC), on

  • 17-05-2020 09:46:23 (UTC)
  • 17-05-2020 11:46:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1070, 11.7310 at 30 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
Tredozio FC 3 1212 1212
Modigliana FC 8 4560 5772
Portico e San Benedetto FC 10 756 6528
Marradi FI 10 3139 9667
Rocca San Casciano FC 10 1910 11577
Dovadola FC 13 1653 13230
Brisighella RA 13 7639 20869
Palazzuolo sul Senio FI 15 1154 22023
Premilcuore FC 15 799 22822
Casola Valsenio RA 16 2617 25439
Galeata FC 19 2516 27955
Riolo Terme RA 19 5720 33675
Castrocaro Terme e Terra del Sole FC 19 6426 40101
Civitella di Romagna FC 20 3786 43887

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Faenza (58541 inhabitants)
28 Km S of Imola (69797 inhabitants)
28 Km W of Forlì (117913 inhabitants)
41 Km W of Cesena (96758 inhabitants)
51 Km SW of Ravenna (159116 inhabitants)
53 Km SE of Bologna (386663 inhabitants)
53 Km NE of Firenze (382808 inhabitants)
57 Km E of Prato (191150 inhabitants)
59 Km NE of Scandicci (50609 inhabitants)
67 Km W of Rimini (147750 inhabitants)
68 Km E of Pistoia (90315 inhabitants)
72 Km N of Arezzo (99543 inhabitants)
82 Km S of Ferrara (133155 inhabitants)
88 Km SE of Modena (184973 inhabitants)
93 Km NE of Siena (53903 inhabitants)
97 Km W of Pesaro (94582 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 2.0 2020-05-17
09:46:23		 44.107 11.7313 30 2020-11-19
12:36:45		 Bollettino Sismico Italiano INGV 79407041
Reviewed
Rev100 		ML 1.9 2020-05-17
09:46:23		 44.1068 11.7303 30 2020-05-17
10:03:08		 Sala Sismica INGV-Roma 79224261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-17 09:46:23 ± 0.19
Latitude 44.1070 ± 0.0045
Longitude 11.7313 ± 0.0075
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79407041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44067
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 79407041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-21 12:26:30

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79224261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-17 10:03:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATTE.HHZ. 2020-05-17T09:46:57.64 3.0 undecidable manual S -0.02 0
IV.FNVD.HHZ. 2020-05-17T09:46:40.12 0.6 undecidable manual S 278 48.9177 116 0.31 45
IV.MTRZ.HHZ. 2020-05-17T09:46:36.61 0.3 undecidable manual S 313 33.4443 127 0.34 69
IV.RUFI.EHZ. 2020-05-17T09:46:36.30 0.3 undecidable manual S 211 34.743 126 -0.24 71
IV.ASQU.HHZ. 2020-05-17T09:46:36.64 0.3 undecidable manual S 172 34.743 126 0.09 74
IV.IMOL.EHZ. 2020-05-17T09:46:35.32 0.3 undecidable manual S 2 28.0497 132 0.16 73
IV.RONT.HHZ. 2020-05-17T09:46:35.12 0.3 undecidable manual S 242 26.9508 134 0.18 72
IV.RINC.HHZ. 2020-05-17T09:46:34.95 0.3 undecidable manual S 202 26.3514 134 0.1 74
IV.SFI.EHZ. 2020-05-17T09:46:34.61 0.3 undecidable manual S 158 24.2535 137 0.16 74
IV.VISG.HHZ. 2020-05-17T09:46:34.20 0.3 undecidable manual S 291 25.3524 136 -0.44 69
IV.CPGN.EHE. 2020-05-17T09:46:33.99 3.0 undecidable manual P -0.04 0
IV.FNVD.HHZ. 2020-05-17T09:46:32.74 0.3 undecidable manual P 278 48.9177 116 -0.01 73
IV.BRIS.HHZ. 2020-05-17T09:46:32.70 0.3 undecidable manual S 12 13.3755 154 -0.07 76
IV.ASQU.HHZ. 2020-05-17T09:46:31.09 0.3 undecidable manual P 172 34.743 126 0.22 72
IV.BRSN.EHE. 2020-05-17T09:46:30.88 3.0 undecidable manual P 0.1 0
IV.IMOL.EHZ. 2020-05-17T09:46:30.32 0.3 undecidable manual P 2 28.0497 132 0.25 72
IV.MTRZ.HHZ. 2020-05-17T09:46:30.98 0.3 undecidable manual P 313 33.4443 127 0.28 70
IV.RUFI.EHZ. 2020-05-17T09:46:30.77 0.3 undecidable manual P 211 34.743 126 -0.1 73
IV.VISG.HHZ. 2020-05-17T09:46:29.37 0.1 positive manual P 291 25.3524 136 -0.4 93
IV.RONT.HHZ. 2020-05-17T09:46:29.74 0.3 undecidable manual P 242 26.9508 134 -0.2 73
IT.FAZ.HNZ. 2020-05-17T09:46:29.68 0.1 undecidable manual P 31 24.6531 136 -0.02 100
IV.RINC.HHZ. 2020-05-17T09:46:29.89 0.3 undecidable manual P 202 26.3514 134 0 76
IV.SFI.EHZ. 2020-05-17T09:46:29.71 0.3 undecidable manual P 158 24.2535 137 0.06 75
IV.BRIS.HHZ. 2020-05-17T09:46:28.37 0.1 positive manual P 12 13.3755 154 -0.32 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:2.0 0.0004575 1.3 AML other m 2020-05-17T09:46:32.19
IV.BRIS.HHN. ML:2.0 0.0005145 1.32 AML other m 2020-05-17T09:46:32.29
IV.VISG.HHE. ML:1.9 0.0003 0.44 AML other m 2020-05-17T09:46:34.76
IV.VISG.HHN. ML:2.0 0.00039400000000000004 0.44 AML other m 2020-05-17T09:46:34.59
IV.SFI.EHE. ML:1.8 0.0002075 0.56 AML other m 2020-05-17T09:46:35.53
IV.SFI.EHN. ML:1.8 0.00022350000000000004 1.22 AML other m 2020-05-17T09:46:35.01
IV.RONT.HHN. ML:2.0 0.00033299999999999996 0.2 AML other m 2020-05-17T09:46:36.10
IV.RONT.HHE. ML:2.0 0.00034550000000000005 1.72 AML other m 2020-05-17T09:46:37.10
IV.FNVD.HHE. ML:2.0 0.00024349999999999998 1.52 AML other m 2020-05-17T09:46:40.17
IV.FNVD.HHN. ML:2.0 0.000241 0.32 AML other m 2020-05-17T09:46:41.41
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