Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 27-12-2020 and time 21:25:22 (Italy) in region Galeata (FC)

A magnitude ML 1.3 earthquake occured in region: Galeata (FC), on

  • 27-12-2020 20:25:22 (UTC)
  • 27-12-2020 21:25:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9960, 11.9150 at 24 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
Galeata FC 0 2516 2516
Civitella di Romagna FC 2 3786 6302
Santa Sofia FC 5 4136 10438
Rocca San Casciano FC 9 1910 12348
Premilcuore FC 11 799 13147
Portico e San Benedetto FC 11 756 13903
Predappio FC 13 6346 20249
Dovadola FC 14 1653 21902
Bagno di Romagna FC 16 6026 27928
Tredozio FC 17 1212 29140
Meldola FC 19 9970 39110

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Forlì (117913 inhabitants)
31 Km SW of Cesena (96758 inhabitants)
32 Km S of Faenza (58541 inhabitants)
43 Km SE of Imola (69797 inhabitants)
52 Km SW of Ravenna (159116 inhabitants)
53 Km W of Rimini (147750 inhabitants)
58 Km E of Firenze (382808 inhabitants)
59 Km N of Arezzo (99543 inhabitants)
64 Km E of Scandicci (50609 inhabitants)
67 Km E of Prato (191150 inhabitants)
72 Km SE of Bologna (386663 inhabitants)
80 Km E of Pistoia (90315 inhabitants)
81 Km W of Pesaro (94582 inhabitants)
89 Km NE of Siena (53903 inhabitants)
90 Km W of Fano (60888 inhabitants)
97 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 1.3 2020-12-27
20:25:22		 43.9955 11.9147 24 2021-02-26
14:56:13		 Bollettino Sismico Italiano INGV 86000321
Reviewed
Rev100 		ML 1.4 2020-12-27
20:25:22		 43.9955 11.9147 24 2020-12-27
20:32:43		 Sala Sismica INGV-Roma 85759621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-27 20:25:22 ± 0.21
Latitude 43.9955 ± 0.0063
Longitude 11.9147 ± 0.0113
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86000321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 943
Semi-minor axis of confidence ellipse (meter) 250
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.61514
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 86000321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-03 20:03:30

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 85759621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-27 20:32:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2020-12-27T20:25:37.09 0.3 undecidable manual S 176 41.9247 112 0.4 66
IV.RUFI.EHZ. 2020-12-27T20:25:35.82 0.3 undecidable manual S 242 36.8298 116 0.37 68
IV.NARO.HHZ. 2020-12-27T20:25:34.61 0.3 undecidable manual P 128 68.2761 103 0.07 67
IV.BRIS.HHZ. 2020-12-27T20:25:34.19 0.3 undecidable manual S 335 28.0497 124 0.77 60
IV.RINC.HHZ. 2020-12-27T20:25:33.53 0.3 undecidable manual S 244 27.3504 124 0.25 70
IV.ASQU.HHZ. 2020-12-27T20:25:32.62 0.3 undecidable manual S 204 24.2535 128 0.02 74
IV.LMD.HHZ. 2020-12-27T20:25:31.20 0.3 undecidable manual S 299 18.87 136 -0.34 70
IV.IMOL.HNE. 2020-12-27T20:25:31.02 0.6 undecidable manual P 341 42.624 112 0.27 46
IV.CRE.HHZ. 2020-12-27T20:25:30.50 0.3 undecidable manual P 176 41.9247 112 -0.15 70
IV.SFI.EHZ. 2020-12-27T20:25:30.24 0.1 undecidable manual S 208 11.3775 151 -0.12 100
IV.RUFI.EHZ. 2020-12-27T20:25:29.83 0.1 undecidable manual P 242 36.8298 116 -0.1 94
IV.BRSN.EHE. 2020-12-27T20:25:29.61 0.3 undecidable manual P 22 34.6431 117 -0.02 73
IV.RINC.HHZ. 2020-12-27T20:25:28.74 0.1 undecidable manual P 244 27.3504 124 0.07 97
IV.ASQU.HHZ. 2020-12-27T20:25:28.19 0.1 undecidable manual P 204 24.2535 128 -0.09 97
IV.BRIS.HHZ. 2020-12-27T20:25:28.73 0.1 undecidable manual P 335 28.0497 124 -0.03 98
IV.LMD.HHZ. 2020-12-27T20:25:27.16 0.1 undecidable manual P 299 18.87 136 -0.51 89
IV.SFI.EHZ. 2020-12-27T20:25:26.72 0.1 undecidable manual P 208 11.3775 151 -0.27 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:1.5 0.00020024150000000002 0.1664 AML other m 2020-12-27T20:25:30.48
IV.SFI.EHE. ML:1.8 0.000347706 0.2432 AML other m 2020-12-27T20:25:30.48
IV.SFI.HNE. ML:1.8 0.00037054145 0.256 AML other m 2020-12-27T20:25:30.36
IV.SFI.HNN. ML:1.5 0.00021109355000000003 0.2304 AML other m 2020-12-27T20:25:30.38
IV.LMD.HHN. ML:1.2 0.00009079557500000001 0.3456 AML other m 2020-12-27T20:25:31.58
IV.LMD.HHE. ML:1.2 0.000074817915 0.2688 AML other m 2020-12-27T20:25:32.33
IV.ASQU.HHN. ML:1.3 0.000089714285 1.6032 AML other m 2020-12-27T20:25:33.84
IV.ASQU.HHE. ML:1.3 0.000082413 0.32 AML other m 2020-12-27T20:25:33.08
IV.RINC.HHE. ML:1.3 0.000087448915 0.3712 AML other m 2020-12-27T20:25:33.67
IV.RINC.HHN. ML:1.2 0.00006534339 1.5648 AML other m 2020-12-27T20:25:33.18
IV.BRIS.HHN. ML:1.5 0.000142176205 0.384 AML other m 2020-12-27T20:25:34.41
IV.BRIS.HHE. ML:1.3 0.000078442695 0.192 AML other m 2020-12-27T20:25:34.84
IV.RUFI.EHE. ML:1.0 0.000030821155000000006 0.4224 AML other m 2020-12-27T20:25:36.04
IV.RUFI.EHN. ML:1.3 0.00005914648 0.5248 AML other m 2020-12-27T20:25:36.43
IV.CRE.HHN. ML:1.0 0.000025583830000000003 0.3072 AML other m 2020-12-27T20:25:37.72
IV.CRE.HHE. ML:0.7 0.000013475345 0.2176 AML other m 2020-12-27T20:25:37.31
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