Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 22-12-2019 and time 16:37:24 (Italy) in region 4 km W Premilcuore (FC)

A magnitude ML 1.9 earthquake occured in region: 4 km W Premilcuore (FC), on

  • 22-12-2019 15:37:24 (UTC)
  • 22-12-2019 16:37:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9850, 11.7240 at 7 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 4 799 799
Portico e San Benedetto FC 7 756 1555
San Godenzo FI 10 1167 2722
Tredozio FC 11 1212 3934
Rocca San Casciano FC 13 1910 5844
Marradi FI 13 3139 8983
Galeata FC 15 2516 11499
Santa Sofia FC 15 4136 15635
Civitella di Romagna FC 17 3786 19421
Londa FI 19 1840 21261
Dicomano FI 19 5515 26776
Modigliana FC 20 4560 31336
Palazzuolo sul Senio FI 20 1154 32490

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SW of Faenza (58541 inhabitants)
37 Km SW of Forlì (117913 inhabitants)
41 Km S of Imola (69797 inhabitants)
44 Km NE of Firenze (382808 inhabitants)
45 Km W of Cesena (96758 inhabitants)
50 Km NE of Scandicci (50609 inhabitants)
51 Km E of Prato (191150 inhabitants)
59 Km N of Arezzo (99543 inhabitants)
61 Km SW of Ravenna (159116 inhabitants)
64 Km SE of Bologna (386663 inhabitants)
65 Km E of Pistoia (90315 inhabitants)
68 Km W of Rimini (147750 inhabitants)
80 Km NE of Siena (53903 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
96 Km W of Pesaro (94582 inhabitants)
97 Km SE of Modena (184973 inhabitants)
99 Km E of Lucca (89046 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 2019-12-22
15:37:24		 43.9848 11.7235 7 2020-02-28
16:42:21		 Bollettino Sismico Italiano INGV 75986171
Reviewed
Rev100 		ML 2.0 2019-12-22
15:37:24		 43.9882 11.7303 9 2019-12-22
15:47:31		 Sala Sismica INGV-Roma 74900511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-22 15:37:24 ± 0.1
Latitude 43.9848 ± 0.0045
Longitude 11.7235 ± 0.0087
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75986171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 665
Semi-minor axis of confidence ellipse (meter) 110
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40110
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 75986171
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-29 07:15:15

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 74900511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-22 15:47:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTRZ.HNN. 2019-12-22T15:37:40.21 0.3 undecidable manual S 327 43.4232 50 0.3 68
IV.CRE.HHZ. 2019-12-22T15:37:39.70 0.3 undecidable manual S 156 44.5221 50 -0.5 65
IV.BRIS.HHZ. 2019-12-22T15:37:35.08 0.1 undecidable manual S 7 26.8509 105 0.49 90
IV.SEI.HHZ. 2019-12-22T15:37:35.65 0.1 undecidable manual S 285 30.1476 103 -0.05 98
IV.MTRZ.HNN. 2019-12-22T15:37:34.48 0.3 undecidable manual P 327 43.4232 50 0.88 56
IV.RONT.HHZ. 2019-12-22T15:37:33.90 3.0 undecidable manual S 0.36 0
IV.CRE.HHZ. 2019-12-22T15:37:33.21 0.3 undecidable manual P 156 44.5221 50 -0.55 64
IV.RUFI.EHZ. 2019-12-22T15:37:33.75 0.1 undecidable manual S 226 23.6541 107 0.23 95
IV.IMOL.HNZ. 2019-12-22T15:37:33.22 0.3 undecidable manual P 2 41.625 50 -0.09 71
IV.ASQU.HHZ. 2019-12-22T15:37:32.99 0.1 undecidable manual S 166 21.5673 108 0.16 97
IV.SFI.EHZ. 2019-12-22T15:37:30.38 0.1 undecidable manual S 132 13.2756 118 0.2 98
IV.BRIS.HHZ. 2019-12-22T15:37:30.45 0.1 undecidable manual P 7 26.8509 105 -0.07 98
IV.SEI.HHZ. 2019-12-22T15:37:30.81 0.1 undecidable manual P 285 30.1476 103 -0.35 92
IV.RUFI.EHZ. 2019-12-22T15:37:29.95 0.1 positive manual P 226 23.6541 107 0.05 99
IV.ASQU.HHZ. 2019-12-22T15:37:29.56 0.1 positive manual P 166 21.5673 108 0.05 99
IV.RONT.HHZ. 2019-12-22T15:37:29.91 3.0 undecidable manual P 0.08 0
IV.SFI.EHZ. 2019-12-22T15:37:28.07 0.1 undecidable manual P 132 13.2756 118 0.09 100
IV.LMD.HHZ. 2019-12-22T15:37:28.82 0.1 undecidable manual S 353 10.3785 124 -0.5 92
IV.LMD.HHZ. 2019-12-22T15:37:27.21 0.1 positive manual P 353 10.3785 124 -0.27 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:2.3 0.0030850755000000002 0.1664 AML other m 2019-12-22T15:37:29.17
IV.LMD.HHN. ML:2.0 0.0016928350000000002 0.1792 AML other m 2019-12-22T15:37:28.98
IV.SFI.EHN. ML:1.4 0.00026769065 0.1024 AML other m 2019-12-22T15:37:31.08
IV.SFI.HNN. ML:1.4 0.00026945454999999994 0.1024 AML other m 2019-12-22T15:37:31.02
IV.ASQU.HHN. ML:1.8 0.00044999265 0.2176 AML other m 2019-12-22T15:37:33.54
IV.ASQU.HHE. ML:1.7 0.00038716075 0.2816 AML other m 2019-12-22T15:37:34.52
IV.RONT.HHN. ML:2.1 0.00086256535 0.128 AML other m 2019-12-22T15:37:34.60
IV.RONT.HHE. ML:2.3 0.001275582 0.1152 AML other m 2019-12-22T15:37:34.65
IV.RUFI.EHN. ML:1.5 0.00022448782499999998 0.3072 AML other m 2019-12-22T15:37:33.99
IV.BRIS.HHE. ML:2.0 0.00057179525 0.1024 AML other m 2019-12-22T15:37:35.18
IV.BRIS.HHN. ML:2.0 0.0005159798 0.1024 AML other m 2019-12-22T15:37:35.24
IV.SEI.HHN. ML:2.3 0.0009448465499999999 0.192 AML other m 2019-12-22T15:37:36.38
IV.SEI.HHE. ML:2.0 0.0004456688 0.1536 AML other m 2019-12-22T15:37:36.18
IV.CRE.HHN. ML:1.9 0.0002217666 0.32 AML other m 2019-12-22T15:37:40.28
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
Waveforms Seismic signals in miniseed + resp format Download