Earthquake with magnitude of ML 2.0 on date 31-12-2020 and time 21:22:33 (Italy) in region 3 km NE Biancavilla (CT)

A magnitude ML 2.0 earthquake occured in region: 3 km NE Biancavilla (CT), on

  • 31-12-2020 20:22:33 (UTC)
  • 31-12-2020 21:22:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.67, 14.89 at 16 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
Biancavilla CT 3 24007 24007
Adrano CT 5 36122 60129
Santa Maria di Licodia CT 6 7641 67770
Ragalna CT 6 3924 71694
PaternĂ² CT 10 48228 119922
Belpasso CT 12 28108 148030
Centuripe EN 14 5470 153500
Nicolosi CT 14 7463 160963
Bronte CT 14 19172 180135
Camporotondo Etneo CT 15 5023 185158
San Pietro Clarenza CT 16 7743 192901
Pedara CT 16 14102 207003
Trecastagni CT 18 10910 217913
Mascalucia CT 18 31958 249871
Maletto CT 18 3920 253791
Motta Sant'Anastasia CT 19 12116 265907
Tremestieri Etneo CT 19 20589 286496
Misterbianco CT 19 49410 335906
Zafferana Etnea CT 20 9517 345423
Gravina di Catania CT 20 25838 371261
Viagrande CT 20 8563 379824

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Catania (314555 inhabitants)
26 Km W of Acireale (52622 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
77 Km NW of Siracusa (122291 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
83 Km SW of Messina (238439 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
86 Km NE of Vittoria (63339 inhabitants)
87 Km NE of Gela (75827 inhabitants)
91 Km N of Modica (54633 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 2.0 2020-12-31
20:22:33
37.67 14.89 16 2021-02-26
14:56:20
Bollettino Sismico Italiano INGV 87499051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-31 20:22:33 ± 0.19
Latitude 37.67 ± 0.01
Longitude 14.89 ± 0.02
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87499051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1568
Semi-minor axis of confidence ellipse (meter) 573
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 1570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
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) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.73205
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 87499051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-26 09:45:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-12-31T20:22:58.68 0.3 undecidable manual S 165 0.732 94 0.52 58
IV.SSY.HHZ. 2020-12-31T20:22:52.89 0.6 undecidable manual S 164 0.5315 96 0.66 38
IV.HAVL.HHZ. 2020-12-31T20:22:47.54 0.3 undecidable manual P 165 0.732 94 -0.4 62
IV.HLNI.HHZ. 2020-12-31T20:22:46.57 0.6 undecidable manual S 182 0.3193 102 0.55 42
IV.SSY.HHZ. 2020-12-31T20:22:44.39 0.3 undecidable manual P 164 0.5315 96 -0.12 68
IV.HLNI.HHZ. 2020-12-31T20:22:40.55 0.1 undecidable manual P 182 0.3193 102 -0.38 90
IV.ENIC.HHZ. 2020-12-31T20:22:40.45 0.6 undecidable manual S 109 0.1133 133 -0.04 49
IV.ECHR.HNZ. 2020-12-31T20:22:40.07 0.6 undecidable manual S 50 0.0288 167 0.86 40
IV.EPOZ.HNZ. 2020-12-31T20:22:39.43 0.3 undecidable manual P 89 0.2392 108 -0.18 71
IV.EPIT.HHZ. 2020-12-31T20:22:39.16 0.3 undecidable manual P 43 0.197 114 0.23 70
IV.ESML.HHZ. 2020-12-31T20:22:38.88 0.6 undecidable manual S 186 0.0504 157 -0.53 45
IV.EPZF.HHZ. 2020-12-31T20:22:38.65 0.3 undecidable manual P 352 0.1574 122 0.32 70
IV.EMSG.HHZ. 2020-12-31T20:22:38.60 0.3 undecidable manual P 18 0.161 121 0.22 71
IV.ENIC.HHZ. 2020-12-31T20:22:37.45 0.3 undecidable manual P 109 0.1133 133 -0.28 71
IV.ESLN.HHZ. 2020-12-31T20:22:37.01 0.3 undecidable manual P 70 0.0746 147 -0.3 71
IV.ESML.HHZ. 2020-12-31T20:22:36.92 0.1 negative manual P 186 0.0504 157 -0.18 97
IV.ECHR.HNZ. 2020-12-31T20:22:36.93 0.1 undecidable manual P 50 0.0288 167 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHN. ML:1.6 0.0004055 0.96 AML other m 2020-12-31T20:22:39.97
IV.ESML.HHE. ML:1.6 0.000438 0.3 AML other m 2020-12-31T20:22:40.42
IV.ENIC.HHE. ML:2 0.0008675 0.56 AML other m 2020-12-31T20:22:41.68
IV.ENIC.HHN. ML:2 0.0007505 0.16 AML other m 2020-12-31T20:22:43.55
IV.EPZF.HHN. ML:1.8 0.000435 0.52 AML other m 2020-12-31T20:22:45.77
IV.EPZF.HHE. ML:1.8 0.000397 0.94 AML other m 2020-12-31T20:22:46.33
IV.SSY.HHE. ML:2.3 0.0004265 1.68 AML other m 2020-12-31T20:22:53.15
IV.SSY.HHN. ML:2.4 0.0005955 0.54 AML other m 2020-12-31T20:22:56.32
IV.HAVL.HHN. ML:2.2 0.000201 0.8 AML other m 2020-12-31T20:22:59.02
IV.HAVL.HHE. ML:2 0.0001315 0.12 AML other m 2020-12-31T20:22:59.49
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download