Earthquake with magnitude of ML 1.7 on date 16-01-2021 and time 00:01:36 (UTC) in region 4 km S Premilcuore (FC)

A magnitude ML 1.7 earthquake occured in region: 4 km S Premilcuore (FC), on

  • 16-01-2021 00:01:36 (UTC)
  • 16-01-2021 01:01:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9460, 11.7870 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.

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 9 756 1555
Santa Sofia FC 10 4136 5691
Galeata FC 12 2516 8207
San Godenzo FI 14 1167 9374
Rocca San Casciano FC 14 1910 11284
Civitella di Romagna FC 14 3786 15070
Tredozio FC 15 1212 16282
Pratovecchio Stia AR 18 5845 22127
Bagno di Romagna FC 18 6026 28153
Londa FI 20 1840 29993

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Forlì (117913 inhabitants)
39 Km S of Faenza (58541 inhabitants)
42 Km SW of Cesena (96758 inhabitants)
46 Km S of Imola (69797 inhabitants)
47 Km E of Firenze (382808 inhabitants)
53 Km E of Scandicci (50609 inhabitants)
54 Km N of Arezzo (99543 inhabitants)
56 Km E of Prato (191150 inhabitants)
62 Km SW of Ravenna (159116 inhabitants)
64 Km W of Rimini (147750 inhabitants)
70 Km E of Pistoia (90315 inhabitants)
71 Km SE of Bologna (386663 inhabitants)
79 Km NE of Siena (53903 inhabitants)
90 Km W of Pesaro (94582 inhabitants)
100 Km W of Fano (60888 inhabitants)
100 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 1.7 2021-01-16
00:01:36
43.9458 11.7868 6 2021-07-12
16:54:56
Bollettino Sismico Italiano INGV 86633351
Reviewed
Rev100
ML 1.9 2021-01-16
00:01:36
43.9498 11.7938 8 2021-01-16
00:06:09
Sala Sismica INGV-Roma 86285911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-16 00:01:36 ± 0.09
Latitude 43.9458 ± 0.0045
Longitude 11.7868 ± 0.0075
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 86633351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 481
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
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) 84
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.56927
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 86633351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-04 11:43:50

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 86285911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-16 00:06:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-01-16T00:01:58.52 0.6 undecidable manual S 116 63.1923 50 1.21 30
IV.PARC.HHE. 2021-01-16T00:01:53.10 0.6 undecidable manual S 132 48.9177 50 -0.41 43
IV.SSP9.EHZ. 2021-01-16T00:01:53.57 0.6 undecidable manual S 146 49.617 50 -0.13 46
IV.CRE.HHZ. 2021-01-16T00:01:50.15 0.6 undecidable manual S 160 38.628 99 -0.34 45
IV.SEI.HHZ. 2021-01-16T00:01:49.46 0.3 undecidable manual S 290 36.2415 100 -0.22 69
IV.PE3.EHZ. 2021-01-16T00:01:48.84 0.6 undecidable manual P 116 63.1923 50 0.15 45
IV.BRIS.HHZ. 2021-01-16T00:01:48.17 0.6 undecidable manual S 357 30.9468 101 0.29 46
IV.RONT.HHZ. 2021-01-16T00:01:47.63 0.6 undecidable manual S 281 28.749 102 0.5 44
IV.MTRZ.HNN. 2021-01-16T00:01:47.03 0.6 undecidable manual P 325 49.9167 50 0.38 44
IV.BRSN.HNE. 2021-01-16T00:01:46.18 0.6 undecidable manual P 32 44.2224 50 0.41 44
IV.IMOL.HNZ. 2021-01-16T00:01:46.61 0.3 undecidable manual P 356 46.0206 50 0.56 63
IT.FAZ.HNZ. 2021-01-16T00:01:45.58 0.6 undecidable manual P 12 39.9267 99 0.56 42
IV.RUFI.EHZ. 2021-01-16T00:01:45.88 0.3 undecidable manual S 242 25.1526 104 -0.05 73
IV.SSP9.EHZ. 2021-01-16T00:01:45.90 1.0 undecidable manual P 146 49.617 50 -0.71 20
IV.PARC.HHE. 2021-01-16T00:01:45.80 0.3 undecidable manual P 132 48.9177 50 -0.7 59
IV.CRE.HHZ. 2021-01-16T00:01:44.17 0.1 undecidable manual P 160 38.628 99 -0.58 84
IV.BRIS.HHZ. 2021-01-16T00:01:43.11 0.1 undecidable manual P 357 30.9468 101 -0.14 95
IV.SEI.HHZ. 2021-01-16T00:01:43.88 0.1 undecidable manual P 290 36.2415 100 -0.41 89
IV.ASQU.HHZ. 2021-01-16T00:01:43.47 0.3 undecidable manual S 179 16.5723 111 0.41 69
IV.RINC.HHZ. 2021-01-16T00:01:43.24 0.3 undecidable manual S 245 15.7731 112 0.42 69
IV.RUFI.EHZ. 2021-01-16T00:01:42.01 0.1 undecidable manual P 242 25.1526 104 -0.11 97
IV.LMD.HHZ. 2021-01-16T00:01:42.38 0.6 undecidable manual S 337 15.9729 111 -0.48 45
IV.RONT.HHZ. 2021-01-16T00:01:42.88 0.3 undecidable manual P 281 28.749 102 0.06 73
IV.RINC.HHZ. 2021-01-16T00:01:40.48 0.1 undecidable manual P 245 15.7731 112 0.15 97
IV.SFI.EHZ. 2021-01-16T00:01:40.27 0.3 undecidable manual S 133 6.5934 133 0.19 74
IV.ASQU.HHZ. 2021-01-16T00:01:40.63 0.1 undecidable manual P 179 16.5723 111 0.17 97
IV.LMD.HHZ. 2021-01-16T00:01:39.83 0.1 undecidable manual P 337 15.9729 111 -0.52 90
IV.SFI.EHZ. 2021-01-16T00:01:38.84 0.1 undecidable manual P 133 6.5934 133 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1.5 0.0003350177 0.34 AML other m 2021-01-16T00:01:42.66
IV.LMD.HHE. ML:1.5 0.00032059195 0.16 AML other m 2021-01-16T00:01:43.02
IV.ASQU.HHE. ML:1.7 0.00049242115 0.24 AML other m 2021-01-16T00:01:44.23
IV.ASQU.HHN. ML:1.8 0.000666 0.24 AML other m 2021-01-16T00:01:44.37
IV.RINC.HHN. ML:1.5 0.00034399999999999996 0.44 AML other m 2021-01-16T00:01:45.09
IV.RINC.HHE. ML:1.5 0.00032799999999999995 1.6 AML other m 2021-01-16T00:01:46.02
IV.RUFI.EHN. ML:1.4 0.000162 0.34 AML other m 2021-01-16T00:01:46.31
IV.RUFI.EHE. ML:1.3 0.00013295836 0.18 AML other m 2021-01-16T00:01:46.95
IV.RONT.HHE. ML:1.8 0.0003533108 0.1 AML other m 2021-01-16T00:01:48.49
IV.BRIS.HHE. ML:1.8 0.000295 0.26 AML other m 2021-01-16T00:01:48.46
IV.BRIS.HHN. ML:1.8 0.00031032445 0.3 AML other m 2021-01-16T00:01:48.84
IV.RONT.HHN. ML:1.8 0.000316 0.16 AML other m 2021-01-16T00:01:49.14
IV.SEI.HHN. ML:2.1 0.0005541118000000001 0.18 AML other m 2021-01-16T00:01:49.84
IV.SEI.HHE. ML:1.9 0.00029850294999999997 0.22 AML other m 2021-01-16T00:01:50.23
IV.CRE.HHN. ML:2.1 0.00047299999999999995 0.26 AML other m 2021-01-16T00:01:50.62
IV.CRE.HHE. ML:1.8 0.00022 0.24 AML other m 2021-01-16T00:01:51.19
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