Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 20-01-2016 and time 15:07:09 (UTC) in region 4 km NE Castrocaro Terme e Terra del Sole (FC)

A magnitude ML 1.3 earthquake occured in region: 4 km NE Castrocaro Terme e Terra del Sole (FC), on

  • 20-01-2016 15:07:09 (UTC)
  • 20-01-2016 16:07:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2090, 11.9710 at 31 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.

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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
Castrocaro Terme e Terra del Sole FC 4 6426 6426
Forlì FC 6 117913 124339
Faenza RA 11 58541 182880
Meldola FC 12 9970 192850
Dovadola FC 12 1653 194503
Predappio FC 12 6346 200849
Forlimpopoli FC 13 13290 214139
Bertinoro FC 15 11059 225198
Modigliana FC 15 4560 229758
Brisighella RA 16 7639 237397
Castel Bolognese RA 18 9554 246951
Russi RA 19 12247 259198
Rocca San Casciano FC 19 1910 261108
Cotignola RA 20 7474 268582
Solarolo RA 20 4488 273070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Forlì (117913 inhabitants)
11 Km SE of Faenza (58541 inhabitants)
23 Km W of Cesena (96758 inhabitants)
26 Km SE of Imola (69797 inhabitants)
30 Km SW of Ravenna (159116 inhabitants)
50 Km W of Rimini (147750 inhabitants)
59 Km SE of Bologna (386663 inhabitants)
75 Km SE of Ferrara (133155 inhabitants)
75 Km NE of Firenze (382808 inhabitants)
79 Km E of Prato (191150 inhabitants)
81 Km NE of Scandicci (50609 inhabitants)
82 Km W of Pesaro (94582 inhabitants)
83 Km N of Arezzo (99543 inhabitants)
90 Km E of Pistoia (90315 inhabitants)
93 Km W of Fano (60888 inhabitants)
96 Km SE of Modena (184973 inhabitants)
97 Km S of Rovigo (51867 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 1.3 2016-01-20
15:07:09		 44.2093 11.9712 31 2016-01-20
15:13:25		 Sala Sismica INGV-Roma 23166491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-01-20 15:07:09 ± 0.44
Latitude 44.2093 ± 0.0126
Longitude 11.9712 ± 0.0238
Depth (km) 31 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 23166491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1560
Semi-minor axis of confidence ellipse (meter) 1328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 1560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 232
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58996
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 23166491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-01-20 15:13:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2016-01-20T15:08:19.99 3.0 undecidable manual Sn -2.61 0
IV.TOLF.HHZ. 2016-01-20T15:07:42.80 3.0 positive manual Pn -1.68 0
IV.CRE.HHZ. 2016-01-20T15:07:31.08 0.1 undecidable manual S 181 65.49 110 0.71 78
IV.CPGN.EHE. 2016-01-20T15:07:26.97 0.3 undecidable manual S 148 53.2023 115 -0.35 68
IV.ASQU.HHZ. 2016-01-20T15:07:26.27 0.1 undecidable manual S 198 48.0186 118 0.19 94
IV.SFI.EHZ. 2016-01-20T15:07:22.59 0.3 undecidable manual S 196 35.2425 127 -0.59 66
IV.LMD.HHZ. 2016-01-20T15:07:21.22 0.3 undecidable manual S 235 25.5522 136 -0.03 76
IV.CRE.HHZ. 2016-01-20T15:07:21.64 1.0 undecidable manual P 181 65.49 110 0.1 23
IV.BRIS.HHZ. 2016-01-20T15:07:20.02 0.1 undecidable manual S 276 16.3725 149 0.26 100
IV.CPGN.EHE. 2016-01-20T15:07:19.63 0.3 undecidable manual P 148 53.2023 115 -0.16 71
IV.ASQU.HHZ. 2016-01-20T15:07:19.08 0.6 negative manual P 198 48.0186 118 0.01 49
IV.SFI.EHZ. 2016-01-20T15:07:17.00 0.6 negative manual P 196 35.2425 127 -0.39 46
IV.LMD.HHZ. 2016-01-20T15:07:16.13 0.1 undecidable manual P 235 25.5522 136 -0.15 99
IV.BRIS.HHZ. 2016-01-20T15:07:15.48 0.3 positive manual P 276 16.3725 149 0.06 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHE. ML:1.1 0.0000317 0.54 AML other m 2016-01-20T15:07:27.55
IV.ASQU.HHN. ML:1.2 0.00003635 0.82 AML other m 2016-01-20T15:07:27.57
IV.LMD.HHE. ML:1.4 0.00008435 0.14 AML other m 2016-01-20T15:07:21.78
IV.LMD.HHN. ML:1.4 0.0000812 0.52 AML other m 2016-01-20T15:07:22.49
IV.SFI.EHE. ML:1.3 0.00006165 0.24 AML other m 2016-01-20T15:07:24.09
IV.SFI.EHN. ML:1.4 0.00006525 0.2 AML other m 2016-01-20T15:07:24.19
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