Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-12-2019 and time 18:15:59 (Italy) in region 6 km SE Premilcuore (FC)

A magnitude ML 1.8 earthquake occured in region: 6 km SE Premilcuore (FC), on

  • 03-12-2019 17:15:59 (UTC)
  • 03-12-2019 18:15:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9290, 11.7980 at 6 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
Premilcuore FC 6 799 799
Santa Sofia FC 9 4136 4935
Portico e San Benedetto FC 11 756 5691
Galeata FC 12 2516 8207
San Godenzo FI 14 1167 9374
Civitella di Romagna FC 14 3786 13160
Rocca San Casciano FC 15 1910 15070
Bagno di Romagna FC 16 6026 21096
Pratovecchio Stia AR 17 5845 26941
Tredozio FC 17 1212 28153
Londa FI 20 1840 29993

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Forlì (117913 inhabitants)
40 Km S of Faenza (58541 inhabitants)
43 Km SW of Cesena (96758 inhabitants)
47 Km E of Firenze (382808 inhabitants)
48 Km S of Imola (69797 inhabitants)
52 Km N of Arezzo (99543 inhabitants)
53 Km E of Scandicci (50609 inhabitants)
56 Km E of Prato (191150 inhabitants)
63 Km SW of Ravenna (159116 inhabitants)
63 Km W of Rimini (147750 inhabitants)
70 Km E of Pistoia (90315 inhabitants)
73 Km SE of Bologna (386663 inhabitants)
78 Km NE of Siena (53903 inhabitants)
90 Km W of Pesaro (94582 inhabitants)
98 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 1.8 2019-12-03
17:15:59		 43.9292 11.7978 6 2020-02-28
16:42:18		 Bollettino Sismico Italiano INGV 75437671
Reviewed
Rev100 		ML 1.9 2019-12-03
17:15:59		 43.9337 11.8183 9 2019-12-03
17:24:26		 Sala Sismica INGV-Roma 74284711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-03 17:15:59 ± 0.12
Latitude 43.9292 ± 0.0063
Longitude 11.7978 ± 0.0087
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75437671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 763
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.56837
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 74284711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-03 17:24:26

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 75437671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-10 17:11:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.OSSC.HHZ. 2019-12-03T17:16:20.56 0.6 undecidable manual S 225 63.0924 50 0.09 44
IV.MOCL.EHZ. 2019-12-03T17:16:17.05 0.3 undecidable manual S 280 50.0166 50 0.09 68
IV.CPGN.HNZ. 2019-12-03T17:16:16.01 0.3 undecidable manual S 109 44.1225 97 0.64 59
IV.BRIS.HHZ. 2019-12-03T17:16:12.05 0.3 undecidable manual S 356 32.8449 99 0.56 64
IV.SEI.HHZ. 2019-12-03T17:16:12.87 0.3 undecidable manual S 292 37.7289 98 -0.28 67
IV.CRE.HHZ. 2019-12-03T17:16:12.30 0.3 undecidable manual S 160 36.5412 99 -0.46 65
IV.OSSC.HHZ. 2019-12-03T17:16:11.65 0.1 undecidable manual P 225 63.0924 50 -0.14 89
IV.MTRZ.HNN. 2019-12-03T17:16:10.89 0.6 undecidable manual P 325 51.9036 50 0.83 36
IV.RUFI.EHZ. 2019-12-03T17:16:09.61 0.3 undecidable manual S 246 25.1526 102 0.74 60
IV.BRSN.HNE. 2019-12-03T17:16:09.47 1.0 undecidable manual P 30 45.3213 50 0.42 21
IV.IMOL.HNZ. 2019-12-03T17:16:09.36 1.0 undecidable manual P 355 47.9187 50 -0.09 23
IV.MOCL.EHZ. 2019-12-03T17:16:09.29 0.1 undecidable manual P 280 50.0166 50 -0.48 85
IV.CPGN.HNZ. 2019-12-03T17:16:08.58 0.3 undecidable manual P 109 44.1225 97 -0.26 67
IV.SEI.HHZ. 2019-12-03T17:16:06.61 0.1 undecidable manual P 292 37.7289 98 -0.96 70
IV.CRE.HHZ. 2019-12-03T17:16:06.67 0.1 positive manual P 160 36.5412 99 -0.66 80
IV.BRIS.HHZ. 2019-12-03T17:16:06.53 0.1 undecidable manual P 356 32.8449 99 -0.08 94
IV.ASQU.HHZ. 2019-12-03T17:16:06.03 0.3 undecidable manual S 183 14.6742 111 0.65 63
IV.RUFI.EHZ. 2019-12-03T17:16:05.34 0.1 undecidable manual P 246 25.1526 102 0.25 92
IV.ASQU.HHZ. 2019-12-03T17:16:03.34 0.1 undecidable manual P 183 14.6742 111 0.26 94
IV.SFI.EHZ. 2019-12-03T17:16:02.38 0.1 undecidable manual S 125 4.7952 139 -0.08 98
IV.SFI.EHZ. 2019-12-03T17:16:01.40 0.1 undecidable manual P 125 4.7952 139 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHN. ML:1.9 0.00035749999999999996 0.26 AML other m 2019-12-03T17:16:12.53
IV.BRIS.HHE. ML:1.9 0.0003965 0.2 AML other m 2019-12-03T17:16:12.62
IV.CRE.HHN. ML:1.8 0.000247 0.48 AML other m 2019-12-03T17:16:12.53
IV.SEI.HHN. ML:2.3 0.000775 0.36 AML other m 2019-12-03T17:16:13.14
IV.SEI.HHE. ML:2.0 0.000352 0.36 AML other m 2019-12-03T17:16:13.83
IV.SFI.HNN. ML:0.0 0.0112160345 0.128 AML other m 2019-12-03T17:16:02.50
IV.SFI.EHN. ML:0.0 0.0111048775 0.1408 AML other m 2019-12-03T17:16:02.50
IV.ASQU.HHE. ML:1.6 0.0004104293 0.1792 AML other m 2019-12-03T17:16:06.42
IV.ASQU.HHN. ML:1.7 0.00061225635 0.1792 AML other m 2019-12-03T17:16:06.43
IV.CRE.HHE. ML:1.4 0.00009391909 0.192 AML other m 2019-12-03T17:16:12.88
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