Earthquake with magnitude of ML 1.0 on date 18-12-2019 and time 11:45:46 (UTC) in region 4 km NW Riolunato (MO)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Riolunato (MO), on

  • 18-12-2019 11:45:46 (UTC)
  • 18-12-2019 12:45:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2540, 10.6150 at 8 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
Riolunato MO 4 712 712
Pievepelago MO 5 2222 2934
Frassinoro MO 6 1926 4860
Palagano MO 8 2194 7054
Montecreto MO 9 940 7994
Fiumalbo MO 9 1280 9274
Lama Mocogno MO 11 2734 12008
Montefiorino MO 12 2203 14211
Sestola MO 13 2508 16719
Abetone PT 13 621 17340
Polinago MO 13 1672 19012
Toano RE 14 4463 23475
Fanano MO 15 2989 26464
Villa Minozzo RE 17 3750 30214
Fosciandora LU 20 602 30816
Castiglione di Garfagnana LU 20 1818 32634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Pistoia (90315 inhabitants)
45 Km NE of Massa (69479 inhabitants)
46 Km E of Carrara (63133 inhabitants)
46 Km N of Lucca (89046 inhabitants)
49 Km S of Reggio nell'Emilia (171345 inhabitants)
50 Km SW of Modena (184973 inhabitants)
52 Km NE of Viareggio (62467 inhabitants)
57 Km NW of Prato (191150 inhabitants)
62 Km N of Pisa (89158 inhabitants)
63 Km SW of Carpi (70699 inhabitants)
64 Km W of Bologna (386663 inhabitants)
65 Km E of La Spezia (93959 inhabitants)
65 Km SE of Parma (192836 inhabitants)
71 Km NW of Scandicci (50609 inhabitants)
74 Km NW of Firenze (382808 inhabitants)
82 Km NE of Livorno (159219 inhabitants)
88 Km W of Imola (69797 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
Reviewed
Rev100
ML 1.0 2019-12-18
11:45:46
44.2538 10.6153 9 2019-12-18
11:55:31
Sala Sismica INGV-Roma 74762491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-18 11:45:46 ± 0.09
Latitude 44.2538 ± 0.0045
Longitude 10.6153 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74762491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 475
Semi-minor axis of confidence ellipse (meter) 340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 19
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45865
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 74762491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-18 11:55:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NDIM.HNZ. 2019-12-18T11:46:16.97 3.0 undecidable manual Sg 9.91 0
IV.CAVE.HHZ. 2019-12-18T11:46:08.80 3.0 undecidable manual Sn 1.56 0
IV.RIBO.EHZ.01 2019-12-18T11:46:04.31 3.0 negative manual P -0.05 0
GU.GRAM.HHE. 2019-12-18T11:46:03.09 0.6 undecidable manual S 301 50.9157 50 0.28 45
IV.FNVD.HHZ. 2019-12-18T11:46:00.41 0.3 undecidable manual S 103 41.4252 50 0.12 72
GU.EQUI.HHZ. 2019-12-18T11:45:58.61 0.3 undecidable manual S 255 38.0286 50 -0.75 60
GU.GRAM.HHE. 2019-12-18T11:45:56.11 0.1 undecidable manual P 301 50.9157 50 0.33 90
IV.CAVE.HHZ. 2019-12-18T11:45:56.16 3.0 positive manual Pn 0.03 0
GU.POPM.HHZ. 2019-12-18T11:45:55.36 0.3 undecidable manual S 154 25.752 108 -0.22 72
GU.CARD.HHZ. 2019-12-18T11:45:55.81 0.3 undecidable manual S 203 27.3504 107 -0.31 71
IV.BDI.HHZ. 2019-12-18T11:45:54.17 0.1 undecidable manual S 184 21.2676 112 0.07 100
MN.VLC.HHZ. 2019-12-18T11:45:54.31 0.3 undecidable manual S 240 20.9679 112 0.28 72
IV.FNVD.HHZ. 2019-12-18T11:45:54.52 0.3 undecidable manual P 103 41.4252 50 0.2 70
GU.SARM.EHZ. 2019-12-18T11:45:53.44 0.1 undecidable manual S 246 18.7701 114 0.14 99
GU.EQUI.HHZ. 2019-12-18T11:45:53.38 0.3 undecidable manual P 255 38.0286 50 -0.41 68
IV.ZCCA.HHN. 2019-12-18T11:45:52.92 0.6 undecidable manual P 69 30.6471 105 0.38 46
GU.POPM.HHZ. 2019-12-18T11:45:51.38 0.1 undecidable manual P 154 25.752 108 -0.22 96
GU.CARD.HHZ. 2019-12-18T11:45:51.83 0.1 undecidable manual P 203 27.3504 107 -0.09 99
GU.GSCL.HHZ. 2019-12-18T11:45:50.51 0.3 undecidable manual S 349 10.9779 128 -0.46 70
MN.VLC.HHZ. 2019-12-18T11:45:50.96 0.1 undecidable manual P 240 20.9679 112 0.26 96
GU.SARM.EHZ. 2019-12-18T11:45:50.55 0.1 undecidable manual P 246 18.7701 114 0.26 96
IV.BDI.HHZ. 2019-12-18T11:45:50.90 0.1 undecidable manual P 184 21.2676 112 0.15 98
GU.GSCL.HHZ. 2019-12-18T11:45:48.73 0.3 undecidable manual P 349 10.9779 128 -0.21 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHN. ML:1.2 0.00010585 0.2 AML other m 2019-12-18T11:45:54.49
IV.BDI.HHE. ML:1.1 0.00009329999999999999 0.4 AML other m 2019-12-18T11:45:54.69
GU.CARD.HHE. ML:0.9 0.000045350000000000005 0.94 AML other m 2019-12-18T11:45:56.14
GU.CARD.HHN. ML:1.0 0.000052449999999999994 0.46 AML other m 2019-12-18T11:45:58.33
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