Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 30-11-2020 and time 16:31:18 (Italy) in region 5 km W Galeata (FC)

A magnitude ML 1.5 earthquake occured in region: 5 km W Galeata (FC), on

  • 30-11-2020 15:31:18 (UTC)
  • 30-11-2020 16:31:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9800, 11.8560 at 32 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 5 2516 2516
Santa Sofia FC 6 4136 6652
Premilcuore FC 6 799 7451
Civitella di Romagna FC 7 3786 11237
Portico e San Benedetto FC 8 756 11993
Rocca San Casciano FC 9 1910 13903
Tredozio FC 14 1212 15115
Dovadola FC 16 1653 16768
Bagno di Romagna FC 17 6026 22794
Predappio FC 17 6346 29140
San Godenzo FI 20 1167 30307

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Forlì (117913 inhabitants)
34 Km S of Faenza (58541 inhabitants)
36 Km W of Cesena (96758 inhabitants)
43 Km S of Imola (69797 inhabitants)
53 Km E of Firenze (382808 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
57 Km N of Arezzo (99543 inhabitants)
58 Km W of Rimini (147750 inhabitants)
59 Km E of Scandicci (50609 inhabitants)
62 Km E of Prato (191150 inhabitants)
70 Km SE of Bologna (386663 inhabitants)
75 Km E of Pistoia (90315 inhabitants)
85 Km NE of Siena (53903 inhabitants)
85 Km W of Pesaro (94582 inhabitants)
95 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 1.5 2020-11-30
15:31:18		 43.9797 11.8558 32 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85262521
Reviewed
Rev100 		ML 1.3 2020-11-30
15:31:19		 43.9925 11.9142 10 2020-11-30
15:38:08		 Sala Sismica INGV-Roma 85107881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 15:31:18 ± 0.17
Latitude 43.9797 ± 0.0063
Longitude 11.8558 ± 0.0112
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85262521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 793
Semi-minor axis of confidence ellipse (meter) 745
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 85107881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-30 15:38:08

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 85262521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 15:31:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CPOZ.HHZ. 2020-11-30T15:33:10.29 3.0 undecidable manual Sg 8.98 0
MN.BNI.HHZ. 2020-11-30T15:33:07.89 3.0 undecidable manual Sn -0.23 0
IV.VITU.HHZ. 2020-11-30T15:32:50.48 3.0 undecidable manual Sn -7.51 0
IV.CORL.HHZ. 2020-11-30T15:32:48.00 3.0 negative manual Pn -4.68 0
IV.SCHR.EHZ. 2020-11-30T15:32:44.48 3.0 undecidable manual Pg 10.4 0
IV.VVLD.HHZ. 2020-11-30T15:32:37.17 3.0 undecidable manual Sg 2.9 0
IV.SARZ.HHZ. 2020-11-30T15:32:36.62 3.0 undecidable manual Sg 7.25 0
IV.PAOL.HHZ. 2020-11-30T15:32:13.81 3.0 undecidable manual Pn -2.04 0
IV.GATE.HHZ. 2020-11-30T15:32:10.75 3.0 negative manual Pn -1.62 0
MN.TUE.HHZ. 2020-11-30T15:32:07.24 3.0 positive manual Pn -0.17 0
IV.MNTV.HNZ. 2020-11-30T15:32:00.55 3.0 undecidable manual Sn -4.42 0
IV.SBPO.HNZ. 2020-11-30T15:31:59.24 3.0 undecidable manual Sg -2.44 0
IV.SAP2.EHZ. 2020-11-30T15:31:49.15 3.0 negative manual Pg 3.3 0
IV.MAGO.CHZ. 2020-11-30T15:31:37.37 3.0 negative manual P -6.77 0
IV.PARC.HHZ. 2020-11-30T15:31:35.50 0.6 undecidable manual S 140 47.8188 118 0.31 47
IV.CRE.HHZ. 2020-11-30T15:31:33.70 0.3 undecidable manual S 169 40.7259 123 0.14 74
IV.RUFI.EHZ. 2020-11-30T15:31:31.89 0.3 undecidable manual S 241 31.8459 130 0.24 73
IV.BRIS.HHZ. 2020-11-30T15:31:31.04 0.3 undecidable manual S 345 28.0497 134 0.13 75
IV.ASQU.HHZ. 2020-11-30T15:31:29.49 0.3 undecidable manual S 195 20.9679 143 -0.17 75
IV.RINC.HHZ. 2020-11-30T15:31:29.88 0.3 undecidable manual S 243 22.3554 141 -0.01 77
IV.PARC.HHZ. 2020-11-30T15:31:28.05 0.1 undecidable manual P 140 47.8188 118 -0.1 98
IV.CRE.HHZ. 2020-11-30T15:31:27.19 0.3 undecidable manual P 169 40.7259 123 -0.02 75
IV.SEI.HHZ. 2020-11-30T15:31:27.74 0.6 undecidable manual P 282 40.5261 123 0.55 44
IV.CPGN.EHZ. 2020-11-30T15:31:27.73 0.6 undecidable manual P 118 42.1245 122 0.34 47
IV.VISG.HHZ. 2020-11-30T15:31:27.29 0.3 undecidable manual P 305 40.8258 123 0.06 74
IV.RUFI.EHZ. 2020-11-30T15:31:26.09 0.3 undecidable manual P 241 31.8459 130 -0.02 76
IV.BRIS.HHZ. 2020-11-30T15:31:25.40 0.1 undecidable manual P 345 28.0497 134 -0.29 97
IV.ASQU.HHZ. 2020-11-30T15:31:24.76 0.1 negative manual P 195 20.9679 143 -0.2 100
IV.RINC.HHZ. 2020-11-30T15:31:24.91 0.1 undecidable manual P 243 22.3554 141 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHN. ML:1.8 0.000225 0.3 AML other m 2020-11-30T15:31:29.83
IV.ASQU.HHE. ML:1.4 0.0000987 1.38 AML other m 2020-11-30T15:31:29.15
IV.RINC.HHE. ML:1.3 0.00007855000000000001 0.94 AML other m 2020-11-30T15:31:30.71
IV.RINC.HHN. ML:1.3 0.00007375 0.56 AML other m 2020-11-30T15:31:30.50
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