Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 29-01-2020 and time 18:52:01 (Italy) in region 6 km W Santa Sofia (FC)

A magnitude ML 1.7 earthquake occured in region: 6 km W Santa Sofia (FC), on

  • 29-01-2020 17:52:01 (UTC)
  • 29-01-2020 18:52:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9280, 11.8410 at 8 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
Santa Sofia FC 6 4136 4136
Premilcuore FC 8 799 4935
Galeata FC 10 2516 7451
Civitella di Romagna FC 12 3786 11237
Portico e San Benedetto FC 12 756 11993
Bagno di Romagna FC 13 6026 18019
Rocca San Casciano FC 15 1910 19929
San Godenzo FI 18 1167 21096
Pratovecchio Stia AR 18 5845 26941
Tredozio FC 19 1212 28153
Verghereto FC 20 1907 30060

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Forlì (117913 inhabitants)
40 Km SW of Cesena (96758 inhabitants)
40 Km S of Faenza (58541 inhabitants)
48 Km S of Imola (69797 inhabitants)
50 Km E of Firenze (382808 inhabitants)
51 Km N of Arezzo (99543 inhabitants)
56 Km E of Scandicci (50609 inhabitants)
60 Km E of Prato (191150 inhabitants)
60 Km W of Rimini (147750 inhabitants)
62 Km SW of Ravenna (159116 inhabitants)
74 Km E of Pistoia (90315 inhabitants)
75 Km SE of Bologna (386663 inhabitants)
79 Km NE of Siena (53903 inhabitants)
86 Km W of Pesaro (94582 inhabitants)
95 Km W of Fano (60888 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 1.7 2020-01-29
17:52:01		 43.9283 11.8412 8 2020-07-18
21:08:35		 Bollettino Sismico Italiano INGV 78949001
Reviewed
Rev100 		ML 1.7 2020-01-29
17:52:01		 43.9272 11.844 9 2020-01-29
18:04:40		 Sala Sismica INGV-Roma 76000271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-29 17:52:01 ± 0.09
Latitude 43.9283 ± 0.0036
Longitude 11.8412 ± 0.0075
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78949001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 31
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
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) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.02428
Epicentral distance of station farthest from the epicenter (degree) 0.36872
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 78949001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-16 22:19:03

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 76000271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-29 18:04:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2020-01-29T17:52:16.10 0.3 undecidable manual S 290 40.9257 50 0.12 69
IV.BRIS.HHZ. 2020-01-29T17:52:14.50 0.6 undecidable manual S 350 33.4443 104 0.57 42
IV.CRE.HHZ. 2020-01-29T17:52:14.73 0.3 undecidable manual S 165 35.4423 50 0.22 68
IV.RONT.HHZ. 2020-01-29T17:52:14.20 0.6 undecidable manual S 283 33.3444 104 0.27 45
IV.RUFI.EHZ. 2020-01-29T17:52:12.05 0.3 undecidable manual S 249 28.3494 106 -0.19 69
IV.RINC.HHZ. 2020-01-29T17:52:09.34 0.6 undecidable manual S 256 19.2696 113 0.07 48
IV.LMD.HHZ. 2020-01-29T17:52:09.42 0.3 undecidable manual S 327 19.6692 113 0.02 73
IV.SEI.HHZ. 2020-01-29T17:52:09.72 0.1 undecidable manual P 290 40.9257 50 -0.35 87
IV.CRE.HHZ. 2020-01-29T17:52:08.97 0.1 positive manual P 165 35.4423 50 -0.25 90
IV.ASQU.HHZ. 2020-01-29T17:52:08.40 0.3 undecidable manual S 196 15.1737 119 0.41 68
IV.RONT.HHZ. 2020-01-29T17:52:08.76 0.3 undecidable manual P 283 33.3444 104 -0.12 70
IV.BRIS.HHZ. 2020-01-29T17:52:08.97 0.1 undecidable manual P 350 33.4443 104 0.09 94
IV.RUFI.EHZ. 2020-01-29T17:52:07.73 0.1 positive manual P 249 28.3494 106 -0.17 93
IV.RINC.HHZ. 2020-01-29T17:52:06.26 0.1 positive manual P 256 19.2696 113 0.07 96
IV.LMD.HHZ. 2020-01-29T17:52:06.13 0.1 positive manual P 327 19.6692 113 -0.14 95
IV.ASQU.HHZ. 2020-01-29T17:52:05.70 0.1 positive manual P 196 15.1737 119 0.25 94
IV.SFI.EHZ. 2020-01-29T17:52:04.70 0.1 undecidable manual S 170 2.6973 162 -0.32 94
IV.SFI.EHZ. 2020-01-29T17:52:03.76 0.1 undecidable manual P 170 2.6973 162 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHN. ML:1.5 0.000341 0.36 AML other m 2020-01-29T17:52:08.76
IV.ASQU.HHE. ML:1.3 0.0001930923 0.2304 AML other m 2020-01-29T17:52:09.73
IV.LMD.HHE. ML:1.8 0.0005035 0.22 AML other m 2020-01-29T17:52:09.67
IV.LMD.HHN. ML:1.7 0.00039949999999999995 0.16 AML other m 2020-01-29T17:52:09.76
IV.RINC.HHE. ML:1.5 0.0002476966 0.2816 AML other m 2020-01-29T17:52:10.04
IV.RUFI.EHN. ML:1.5 0.00018190129999999999 0.2176 AML other m 2020-01-29T17:52:12.26
IV.RINC.HHN. ML:1.2 0.000128541945 0.8448 AML other m 2020-01-29T17:52:13.41
IV.RONT.HHE. ML:2.1 0.0004948507500000001 0.0896 AML other m 2020-01-29T17:52:14.69
IV.RONT.HHN. ML:2.1 0.000502 0.12 AML other m 2020-01-29T17:52:14.83
IV.BRIS.HHN. ML:1.6 0.00017648864999999999 0.192 AML other m 2020-01-29T17:52:14.89
IV.BRIS.HHE. ML:1.8 0.00026423770000000003 0.2688 AML other m 2020-01-29T17:52:15.08
IV.CRE.HHN. ML:1.4 0.00009797873 0.2688 AML other m 2020-01-29T17:52:14.82
IV.SEI.HHN. ML:2.0 0.000358 0.36 AML other m 2020-01-29T17:52:16.33
IV.SEI.HHE. ML:1.7 0.000153 0.34 AML other m 2020-01-29T17:52:16.89
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