Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 06-12-2019 and time 08:43:52 (Italy) in region 5 km W Santa Sofia (FC)

A magnitude ML 1.9 earthquake occured in region: 5 km W Santa Sofia (FC), on

  • 06-12-2019 07:43:52 (UTC)
  • 06-12-2019 08:43:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9670, 11.8550 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
Santa Sofia FC 5 4136 4136
Galeata FC 6 2516 6652
Premilcuore FC 6 799 7451
Civitella di Romagna FC 8 3786 11237
Portico e San Benedetto FC 9 756 11993
Rocca San Casciano FC 11 1910 13903
Tredozio FC 15 1212 15115
Bagno di Romagna FC 16 6026 21141
Dovadola FC 18 1653 22794
Predappio FC 18 6346 29140
San Godenzo FI 19 1167 30307

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Forlì (117913 inhabitants)
36 Km S of Faenza (58541 inhabitants)
36 Km SW of Cesena (96758 inhabitants)
45 Km S of Imola (69797 inhabitants)
53 Km E of Firenze (382808 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
57 Km SW of Ravenna (159116 inhabitants)
58 Km W of Rimini (147750 inhabitants)
59 Km E of Scandicci (50609 inhabitants)
61 Km E of Prato (191150 inhabitants)
72 Km SE of Bologna (386663 inhabitants)
75 Km E of Pistoia (90315 inhabitants)
83 Km NE of Siena (53903 inhabitants)
85 Km W of Pesaro (94582 inhabitants)
94 Km W of Fano (60888 inhabitants)
99 Km S of Ferrara (133155 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 1.9 2019-12-06
07:43:52		 43.9668 11.8547 10 2020-02-28
16:42:21		 Bollettino Sismico Italiano INGV 75913981
Reviewed
Rev100 		ML 1.8 2019-12-06
07:43:52		 43.9693 11.8832 9 2019-12-06
07:50:39		 Sala Sismica INGV-Roma 74369491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-06 07:43:52 ± 0.1
Latitude 43.9668 ± 0.0054
Longitude 11.8547 ± 0.0100
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 75913981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 864
Semi-minor axis of confidence ellipse (meter) 116
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.65021
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 74369491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-06 07:50:39

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 75913981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-27 15:36:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BADI.EHE. 2019-12-06T07:44:11.98 0.6 undecidable manual S 148 59.5959 50 0.43 42
IV.PARC.HHE. 2019-12-06T07:44:07.92 0.6 undecidable manual S 139 46.8198 50 -0.23 45
IV.CRE.HHZ. 2019-12-06T07:44:06.34 0.6 undecidable manual S 169 39.3273 50 0.17 46
IV.ATPI.EHZ. 2019-12-06T07:44:05.97 0.3 undecidable manual P 142 72.1722 50 0.35 62
IV.SEI.HHZ. 2019-12-06T07:44:05.76 0.6 undecidable manual S 284 40.7259 50 -0.77 38
IV.BRIS.HHZ. 2019-12-06T07:44:04.00 0.6 undecidable manual S 346 29.4483 50 0.49 44
IV.RUFI.EHZ. 2019-12-06T07:44:04.23 0.6 undecidable manual S 243 31.0467 50 0.28 45
IV.BADI.EHE. 2019-12-06T07:44:03.26 0.3 undecidable manual P 148 59.5959 50 -0.42 63
IV.MOCL.EHZ. 2019-12-06T07:44:03.32 0.3 undecidable manual P 275 53.9016 50 0.51 62
IV.MTRZ.HNN. 2019-12-06T07:44:02.97 0.3 undecidable manual P 318 51.4152 50 0.55 62
IV.PARC.HHE. 2019-12-06T07:44:01.63 0.1 undecidable manual P 139 46.8198 50 -0.08 92
IV.SEI.HHZ. 2019-12-06T07:44:00.19 0.6 undecidable manual P 284 40.7259 50 -0.59 41
IV.ASQU.HHZ. 2019-12-06T07:44:00.87 0.6 undecidable manual S 195 19.5693 117 0.36 46
IV.CRE.HHZ. 2019-12-06T07:44:00.24 0.1 negative manual P 169 39.3273 50 -0.33 89
IV.CPGN.EHZ. 2019-12-06T07:44:00.96 0.1 undecidable manual P 116 41.5251 50 0.06 93
IV.RUFI.EHZ. 2019-12-06T07:43:59.21 0.1 positive manual P 243 31.0467 50 -0.08 95
IV.LMD.HHZ. 2019-12-06T07:43:59.97 0.6 undecidable manual S 316 16.9719 120 0.25 47
IV.BRIS.HHZ. 2019-12-06T07:43:58.87 0.1 positive manual P 346 29.4483 50 -0.17 93
IV.ASQU.HHZ. 2019-12-06T07:43:57.24 0.1 positive manual P 195 19.5693 117 -0.06 97
IV.SFI.EHZ. 2019-12-06T07:43:57.13 0.3 undecidable manual S 185 6.8931 145 0.05 74
IV.LMD.HHZ. 2019-12-06T07:43:56.56 0.1 undecidable manual P 316 16.9719 120 -0.28 93
IV.SFI.EHZ. 2019-12-06T07:43:55.30 0.1 positive manual P 185 6.8931 145 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.HNN. ML:2.5 0.00477 0.14 AML other m 2019-12-06T07:43:57.29
IV.SFI.EHN. ML:2.5 0.0048 0.14 AML other m 2019-12-06T07:43:57.29
IV.SFI.HNE. ML:2.3 0.0033049999999999998 0.24 AML other m 2019-12-06T07:43:57.30
IV.SFI.EHE. ML:2.3 0.0032949999999999998 0.24 AML other m 2019-12-06T07:43:57.30
IV.LMD.HHN. ML:1.6 0.0003735 1.58 AML other m 2019-12-06T07:44:00.04
IV.LMD.HHE. ML:1.6 0.000386 1.08 AML other m 2019-12-06T07:44:00.81
IV.ASQU.HHE. ML:1.9 0.000666 1.7 AML other m 2019-12-06T07:44:01.13
IV.ASQU.HHN. ML:2.0 0.0007025 0.4 AML other m 2019-12-06T07:44:01.02
IV.BRIS.HHN. ML:2.0 0.0005800000000000001 0.4 AML other m 2019-12-06T07:44:04.40
IV.RUFI.EHE. ML:1.6 0.000171 0.86 AML other m 2019-12-06T07:44:04.67
IV.RUFI.EHN. ML:1.8 0.000261 0.46 AML other m 2019-12-06T07:44:04.93
IV.BRIS.HHE. ML:1.9 0.0004265 1.74 AML other m 2019-12-06T07:44:04.07
IV.CRE.HHN. ML:2.0 0.0003375 0.24 AML other m 2019-12-06T07:44:06.62
IV.CRE.HHE. ML:1.8 0.0002 0.34 AML other m 2019-12-06T07:44:06.90
IV.CPGN.EHN. ML:1.4 0.00008945 0.86 AML other m 2019-12-06T07:44:18.31
IV.CPGN.EHE. ML:1.4 0.00008615000000000001 0.42 AML other m 2019-12-06T07:44:19.75
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