Earthquake with magnitude of ML 1.9 on date 17-05-2020 and time 11:46:23 (Italy) in region 3 km NW Tredozio (FC)

A magnitude ML 1.9 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) 44.11, 11.73 at 30 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.

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)
56 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.9 2020-05-17
09:46:23
44.11 11.73 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 ± 0.17
Latitude 44.11 ± 0.00
Longitude 11.73 ± 0.01
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79224261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 652
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.52341
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

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 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 0.4398 116 0.33 45
IV.RUFI.EHZ. 2020-05-17T09:46:36.30 0.3 undecidable manual S 211 0.3121 126 -0.24 70
IV.MTRZ.HHZ. 2020-05-17T09:46:36.61 0.3 undecidable manual S 313 0.3004 127 0.34 69
IV.ASQU.HHZ. 2020-05-17T09:46:36.64 0.3 undecidable manual S 172 0.313 126 0.08 73
IV.IMOL.EHZ. 2020-05-17T09:46:35.32 0.3 undecidable manual S 2 0.2527 133 0.14 73
IV.RONT.HHZ. 2020-05-17T09:46:35.12 0.3 undecidable manual S 242 0.2419 134 0.18 73
IV.VISG.HHZ. 2020-05-17T09:46:34.20 0.3 undecidable manual S 291 0.2275 136 -0.45 68
IV.RINC.HHZ. 2020-05-17T09:46:34.95 0.3 undecidable manual S 202 0.2374 135 0.1 74
IV.SFI.EHZ. 2020-05-17T09:46:34.61 0.3 undecidable manual S 157 0.2185 137 0.14 73
IV.CPGN.EHE. 2020-05-17T09:46:33.99 0.6 undecidable manual P 126 0.5234 112 -0.04 47
IV.FNVD.HHZ. 2020-05-17T09:46:32.74 0.3 undecidable manual P 278 0.4398 116 0.01 72
IV.BRIS.HHZ. 2020-05-17T09:46:32.70 0.3 undecidable manual S 12 0.1205 154 -0.11 75
IV.ASQU.HHZ. 2020-05-17T09:46:31.09 0.3 undecidable manual P 172 0.313 126 0.23 71
IV.IMOL.EHZ. 2020-05-17T09:46:30.32 0.3 undecidable manual P 2 0.2527 133 0.25 71
IV.RUFI.EHZ. 2020-05-17T09:46:30.77 0.3 undecidable manual P 211 0.3121 126 -0.08 73
IV.MTRZ.HHZ. 2020-05-17T09:46:30.98 0.3 undecidable manual P 313 0.3004 127 0.29 70
IV.BRSN.EHE. 2020-05-17T09:46:30.88 0.6 undecidable manual P 55 0.3067 127 0.1 48
IV.SFI.EHZ. 2020-05-17T09:46:29.71 0.3 undecidable manual P 157 0.2185 137 0.06 75
IT.FAZ.HNZ. 2020-05-17T09:46:29.68 0.1 undecidable manual P 31 0.223 137 -0.03 100
IV.VISG.HHZ. 2020-05-17T09:46:29.37 0.1 positive manual P 291 0.2275 136 -0.39 92
IV.RONT.HHZ. 2020-05-17T09:46:29.74 0.3 undecidable manual P 242 0.2419 134 -0.19 72
IV.RINC.HHZ. 2020-05-17T09:46:29.89 1.0 undecidable manual P 202 0.2374 135 0.01 25
IV.BRIS.HHZ. 2020-05-17T09:46:28.37 0.1 positive manual P 12 0.1205 154 -0.32 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:2 0.0004575 1.3 AML other m 2020-05-17T09:46:32.19
IV.BRIS.HHN. ML:2 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 0.000394 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.RINC.HHN. ML:1.4 9.535E-5 0.32 AML other m 2020-05-17T09:46:35.37
IV.SFI.EHN. ML:1.8 0.0002235 1.22 AML other m 2020-05-17T09:46:35.01
IV.RINC.HHE. ML:1.6 0.0001595 0.28 AML other m 2020-05-17T09:46:36.23
IV.RONT.HHN. ML:2 0.000333 0.2 AML other m 2020-05-17T09:46:36.10
IV.RONT.HHE. ML:2 0.0003455 1.72 AML other m 2020-05-17T09:46:37.10
IV.ASQU.HHE. ML:1.5 9.835E-5 0.24 AML other m 2020-05-17T09:46:37.92
IV.ASQU.HHN. ML:1.3 5.61E-5 0.62 AML other m 2020-05-17T09:46:37.83
IV.MTRZ.HHE. ML:2.2 0.0005505 0.42 AML other m 2020-05-17T09:46:38.54
IV.MTRZ.HHN. ML:2.2 0.00058 0.34 AML other m 2020-05-17T09:46:39.57
IV.FNVD.HHE. ML:2 0.0002435 1.52 AML other m 2020-05-17T09:46:40.17
IV.FNVD.HHN. ML:2 0.000241 0.32 AML other m 2020-05-17T09:46:41.41
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download