Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 01-02-2020 and time 17:42:48 (Italy) in region 1 km NE Premilcuore (FC)

A magnitude ML 1.6 earthquake occured in region: 1 km NE Premilcuore (FC), on

  • 01-02-2020 16:42:48 (UTC)
  • 01-02-2020 17:42:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9840, 11.7820 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 1 799 799
Portico e San Benedetto FC 5 756 1555
Rocca San Casciano FC 10 1910 3465
Galeata FC 10 2516 5981
Santa Sofia FC 11 4136 10117
Tredozio FC 11 1212 11329
Civitella di Romagna FC 13 3786 15115
San Godenzo FI 14 1167 16282
Marradi FI 17 3139 19421
Dovadola FC 18 1653 21074
Modigliana FC 19 4560 25634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Forlì (117913 inhabitants)
35 Km S of Faenza (58541 inhabitants)
41 Km W of Cesena (96758 inhabitants)
42 Km S of Imola (69797 inhabitants)
48 Km E of Firenze (382808 inhabitants)
54 Km E of Scandicci (50609 inhabitants)
56 Km E of Prato (191150 inhabitants)
58 Km N of Arezzo (99543 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
63 Km W of Rimini (147750 inhabitants)
67 Km SE of Bologna (386663 inhabitants)
69 Km E of Pistoia (90315 inhabitants)
82 Km NE of Siena (53903 inhabitants)
91 Km W of Pesaro (94582 inhabitants)
96 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 1.6 2020-02-01
16:42:48		 43.9838 11.7822 7 2020-07-18
21:08:26		 Bollettino Sismico Italiano INGV 77357461
Reviewed
Rev100 		ML 1.8 2020-02-01
16:42:47		 43.9868 11.7832 9 2020-02-01
16:52:25		 Sala Sismica INGV-Roma 76104441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-01 16:42:48 ± 0.08
Latitude 43.9838 ± 0.0036
Longitude 11.7822 ± 0.0062
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 77357461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 463
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.60794
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:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 76104441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-01 16:52:25

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 77357461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-18 18:23:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.OSSC.HHZ. 2020-02-01T16:43:09.47 0.3 undecidable manual S 220 66.7776 50 0.37 64
IV.CRMI.HHZ. 2020-02-01T16:43:09.40 0.6 undecidable manual S 252 67.4769 50 0.1 45
IV.BADI.EHZ. 2020-02-01T16:43:08.71 0.3 undecidable manual S 145 64.2912 50 0.25 65
IV.PARC.HHZ. 2020-02-01T16:43:05.48 0.3 undecidable manual S 135 52.1034 50 0.28 67
IV.CRE.HHZ. 2020-02-01T16:43:02.31 0.3 undecidable manual S 161 42.7239 50 -0.37 66
IV.CRMI.HHZ. 2020-02-01T16:43:00.32 0.3 undecidable manual P 252 67.4769 50 0.02 68
IV.VISG.HHZ. 2020-02-01T16:43:00.73 0.3 undecidable manual S 309 35.8419 102 0.02 72
IV.SEI.HHZ. 2020-02-01T16:43:00.16 0.3 undecidable manual S 283 34.6431 102 -0.15 71
IV.BADI.EHZ. 2020-02-01T16:42:59.26 0.3 undecidable manual P 145 64.2912 50 -0.55 61
IV.OSSC.HHZ. 2020-02-01T16:42:59.96 0.3 undecidable manual P 220 66.7776 50 -0.22 66
IV.BRIS.HNN. 2020-02-01T16:42:58.24 0.3 undecidable manual S 357 26.751 105 0.61 64
IV.RONT.HHZ. 2020-02-01T16:42:58.22 0.3 undecidable manual S 272 27.8499 105 0.2 71
IV.MTRZ.HHE. 2020-02-01T16:42:57.75 0.6 undecidable manual P 322 46.2204 50 0.72 39
IV.PARC.HHZ. 2020-02-01T16:42:57.36 0.6 undecidable manual P 135 52.1034 50 -0.57 41
IV.RUFI.EHZ. 2020-02-01T16:42:57.76 0.3 undecidable manual S 233 27.1506 105 -0.01 74
IV.IMOL.EHZ. 2020-02-01T16:42:57.07 0.3 undecidable manual P 356 41.8248 50 0.73 59
IV.ASQU.HHZ. 2020-02-01T16:42:56.08 0.3 undecidable manual S 178 20.7681 110 0.42 68
IV.RINC.HHZ. 2020-02-01T16:42:55.08 0.6 undecidable manual S 232 17.6712 113 0.42 46
IV.CRE.HHZ. 2020-02-01T16:42:55.82 0.3 undecidable manual P 161 42.7239 50 -0.66 61
IV.SEI.HHZ. 2020-02-01T16:42:54.73 0.3 undecidable manual P 283 34.6431 102 -0.38 67
IV.VISG.HHZ. 2020-02-01T16:42:54.81 0.3 undecidable manual P 309 35.8419 102 -0.53 64
IV.RONT.HHZ. 2020-02-01T16:42:53.77 0.1 positive manual P 272 27.8499 105 -0.02 98
IV.BRIS.HNN. 2020-02-01T16:42:53.55 0.3 undecidable manual P 357 26.751 105 -0.01 74
IV.RUFI.EHZ. 2020-02-01T16:42:53.52 0.1 positive manual P 233 27.1506 105 -0.13 96
IV.RINC.HHZ. 2020-02-01T16:42:52.00 0.1 positive manual P 232 17.6712 113 0.15 97
IV.LMD.HHZ. 2020-02-01T16:42:52.55 0.3 undecidable manual S 330 11.9769 122 -0.34 71
IV.ASQU.HHZ. 2020-02-01T16:42:52.43 0.1 positive manual P 178 20.7681 110 0 99
IV.SFI.EHZ. 2020-02-01T16:42:52.48 0.3 undecidable manual S 149 10.1787 126 0.1 74
IV.LMD.HHZ. 2020-02-01T16:42:50.61 0.1 positive manual P 330 11.9769 122 -0.22 97
IV.SFI.EHZ. 2020-02-01T16:42:50.59 0.1 positive manual P 149 10.1787 126 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:1.9 0.0012831510000000002 0.0896 AML other m 2020-02-01T16:42:52.67
IV.SFI.HNE. ML:1.9 0.0012926755 0.0896 AML other m 2020-02-01T16:42:52.67
IV.LMD.HHN. ML:2.2 0.0018255135 0.192 AML other m 2020-02-01T16:42:52.89
IV.SFI.HNN. ML:1.9 0.0010718333 0.1152 AML other m 2020-02-01T16:42:52.84
IV.SFI.EHN. ML:1.9 0.00109541135 0.128 AML other m 2020-02-01T16:42:52.84
IV.LMD.HHE. ML:2.2 0.0019628320000000003 0.1664 AML other m 2020-02-01T16:42:52.95
IV.ASQU.HHE. ML:1.7 0.00036570969999999995 0.2048 AML other m 2020-02-01T16:42:56.31
IV.ASQU.HHN. ML:1.6 0.0002685159 0.2432 AML other m 2020-02-01T16:42:56.26
IV.RINC.HHE. ML:1.6 0.00035012564999999996 0.2176 AML other m 2020-02-01T16:42:57.15
IV.RUFI.EHE. ML:1.6 0.00021532365000000002 0.256 AML other m 2020-02-01T16:42:58.30
IV.RUFI.EHN. ML:1.4 0.0001489378 0.1792 AML other m 2020-02-01T16:42:58.23
IV.SEI.HHE. ML:2.0 0.0004401632 0.1408 AML other m 2020-02-01T16:43:00.96
IV.SEI.HHN. ML:2.1 0.0005842548499999999 0.1664 AML other m 2020-02-01T16:43:01.02
IV.VISG.HHN. ML:1.5 0.000135022685 0.1024 AML other m 2020-02-01T16:43:01.40
IV.VISG.HHE. ML:1.2 0.00006272102499999999 0.1536 AML other m 2020-02-01T16:43:02.02
IV.CRE.HHN. ML:2.0 0.00035086115 0.3328 AML other m 2020-02-01T16:43:02.77
IV.CRE.HHE. ML:1.6 0.00011578033500000001 0.3456 AML other m 2020-02-01T16:43:03.34
IV.PARC.HHN. ML:1.4 0.000065235725 0.2816 AML other m 2020-02-01T16:43:06.31
IV.PARC.HHE. ML:1.2 0.00003576237 0.4608 AML other m 2020-02-01T16:43:07.10
IV.CRMI.HHN. ML:1.2 0.00002885441 0.384 AML other m 2020-02-01T16:43:10.07
IV.CRMI.HNN. ML:1.6 0.00006776836 0.3328 AML other m 2020-02-01T16:43:10.06
IV.CRMI.HNE. ML:1.5 0.000053131245 0.2816 AML other m 2020-02-01T16:43:10.27
IV.CRMI.HHE. ML:1.0 0.000019418580000000003 0.3712 AML other m 2020-02-01T16:43:10.33
IV.BADI.EHE. ML:1.3 0.000039921714999999995 0.1664 AML other m 2020-02-01T16:43:10.92
IV.OSSC.HHE. ML:1.4 0.000046483635 0.32 AML other m 2020-02-01T16:43:13.65
IV.OSSC.HHN. ML:1.4 0.000044280084999999995 0.2944 AML other m 2020-02-01T16:43:13.47
IV.BADI.EHN. ML:1.4 0.000042736255 0.3328 AML other m 2020-02-01T16:43:14.96
IV.RINC.HHN. ML:1.5 0.00032071949999999997 0.3968 AML other m 2020-02-01T16:42:58.55
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