Earthquake with magnitude of ML 2.0 on date 31-12-2020 and time 21:18:34 (Italy) in region 3 km N Ragalna (CT)

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

  • 31-12-2020 20:18:34 (UTC)
  • 31-12-2020 21:18:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.66, 14.94 at 15 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
Ragalna CT 3 3924 3924
Biancavilla CT 7 24007 27931
Santa Maria di Licodia CT 7 7641 35572
Belpasso CT 8 28108 63680
Nicolosi CT 9 7463 71143
Adrano CT 9 36122 107265
PaternĂ² CT 10 48228 155493
Pedara CT 12 14102 169595
Camporotondo Etneo CT 12 5023 174618
San Pietro Clarenza CT 12 7743 182361
Trecastagni CT 13 10910 193271
Mascalucia CT 14 31958 225229
Viagrande CT 15 8563 233792
Tremestieri Etneo CT 15 20589 254381
Zafferana Etnea CT 15 9517 263898
Gravina di Catania CT 15 25838 289736
Aci Bonaccorsi CT 16 3524 293260
San Giovanni la Punta CT 16 23060 316320
Misterbianco CT 17 49410 365730
Motta Sant'Anastasia CT 17 12116 377846
Sant'Agata li Battiati CT 17 9479 387325
Milo CT 17 1087 388412
Bronte CT 17 19172 407584
Aci Sant'Antonio CT 17 17984 425568
Santa Venerina CT 18 8592 434160
Centuripe EN 18 5470 439630
San Gregorio di Catania CT 18 11966 451596
Valverde CT 19 7840 459436
Aci Catena CT 19 29851 489287
Maletto CT 20 3920 493207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Acireale (52622 inhabitants)
22 Km NW of Catania (314555 inhabitants)
74 Km NW of Siracusa (122291 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
80 Km SW of Messina (238439 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
87 Km NE of Vittoria (63339 inhabitants)
90 Km NE of Gela (75827 inhabitants)
90 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
20:18:34
37.66 14.94 15 2021-02-26
14:56:20
Bollettino Sismico Italiano INGV 87498931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-31 20:18:34 ± 0.18
Latitude 37.66 ± 0.01
Longitude 14.94 ± 0.02
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87498931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1700
Semi-minor axis of confidence ellipse (meter) 258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 1700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.71496
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 12
Type of magnitude ML
Reference to an origin 87498931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-26 09:42:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-12-31T20:18:58.67 0.6 undecidable manual S 168 0.715 93 0.78 37
IV.SSY.HHZ. 2020-12-31T20:18:52.87 0.6 undecidable manual S 168 0.5135 95 0.94 36
IV.HAVL.HHZ. 2020-12-31T20:18:47.55 0.3 undecidable manual P 168 0.715 93 -0.34 63
IV.HLNI.HHZ. 2020-12-31T20:18:46.46 0.6 undecidable manual S 190 0.3166 100 0.32 46
IV.SSY.HHZ. 2020-12-31T20:18:44.37 0.3 undecidable manual P 168 0.5135 95 -0.08 70
IV.EPZF.HHZ. 2020-12-31T20:18:43.43 0.6 undecidable manual S 338 0.1763 114 1.27 32
IV.AIO.HHZ. 2020-12-31T20:18:42.32 0.6 undecidable manual P 37 0.3876 97 0.01 48
IV.GALF.HHZ. 2020-12-31T20:18:41.36 0.6 undecidable manual P 280 0.3004 101 0.52 44
IV.HLNI.HHZ. 2020-12-31T20:18:40.58 0.3 undecidable manual P 190 0.3166 100 -0.53 66
IV.ENIC.HHZ. 2020-12-31T20:18:40.42 0.6 undecidable manual S 114 0.0701 146 0.7 44
IV.ECHR.HHE. 2020-12-31T20:18:39.77 0.6 undecidable manual S 320 0.0342 163 0.52 47
IV.ESML.HHZ. 2020-12-31T20:18:39.31 0.6 undecidable manual S 229 0.0639 149 -0.31 48
IV.ESLN.HHZ. 2020-12-31T20:18:39.27 0.6 undecidable manual S 39 0.0423 159 -0.07 51
IV.EPZF.HHZ. 2020-12-31T20:18:38.68 0.3 undecidable manual P 338 0.1763 114 -0.13 74
IV.EMSG.HHZ. 2020-12-31T20:18:38.50 0.1 undecidable manual P 3 0.161 117 -0.06 100
IV.ENIC.HHZ. 2020-12-31T20:18:37.18 0.3 undecidable manual P 114 0.0701 146 -0.22 73
IV.ESLN.HHZ. 2020-12-31T20:18:36.96 0.1 undecidable manual P 39 0.0423 159 -0.22 99
IV.ECHR.HHE. 2020-12-31T20:18:36.93 0.1 undecidable manual P 320 0.0342 163 -0.2 99
IV.ESML.HHZ. 2020-12-31T20:18:36.93 0.1 negative manual P 229 0.0639 149 -0.41 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:1.7 0.0005645 0.64 AML other m 2020-12-31T20:18:40.43
IV.ENIC.HHN. ML:1.9 0.0009165 0.8 AML other m 2020-12-31T20:18:41.69
IV.ENIC.HHE. ML:2 0.0010505 0.76 AML other m 2020-12-31T20:18:41.67
IV.ESML.HHN. ML:1.7 0.0004785 0.34 AML other m 2020-12-31T20:18:44.48
IV.EPZF.HHN. ML:1.9 0.0004845 0.66 AML other m 2020-12-31T20:18:44.55
IV.EPZF.HHE. ML:1.8 0.000465 0.54 AML other m 2020-12-31T20:18:45.10
IV.GALF.HHE. ML:1.9 0.0003315 1.66 AML other m 2020-12-31T20:18:50.84
IV.SSY.HHE. ML:2.5 0.0006785 1.68 AML other m 2020-12-31T20:18:53.15
IV.GALF.HHN. ML:1.8 0.0002845 1.44 AML other m 2020-12-31T20:18:53.96
IV.SSY.HHN. ML:2.6 0.0009475 0.52 AML other m 2020-12-31T20:18:56.07
IV.HAVL.HHN. ML:2.3 0.000291 1.5 AML other m 2020-12-31T20:18:59.02
IV.HAVL.HHE. ML:2.1 0.000184 0.92 AML other m 2020-12-31T20:18:59.32
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download