Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 24-12-2021 and time 05:43:58 (UTC) in region 6 km SW Motta Sant'Anastasia (CT)

A magnitude ML 1.9 earthquake occured in region: 6 km SW Motta Sant'Anastasia (CT), on

  • 24-12-2021 05:43:58 (UTC)
  • 24-12-2021 06:43:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4760, 14.9250 at 10 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
Motta Sant'Anastasia CT 6 12116 12116
Misterbianco CT 9 49410 61526
Paternò CT 12 48228 109754
Camporotondo Etneo CT 13 5023 114777
Belpasso CT 14 28108 142885
San Pietro Clarenza CT 14 7743 150628
Catania CT 15 314555 465183
Gravina di Catania CT 15 25838 491021
Mascalucia CT 16 31958 522979
Santa Maria di Licodia CT 16 7641 530620
Sant'Agata li Battiati CT 17 9479 540099
Tremestieri Etneo CT 17 20589 560688
Ragalna CT 17 3924 564612
Nicolosi CT 18 7463 572075
San Giovanni la Punta CT 19 23060 595135
San Gregorio di Catania CT 19 11966 607101
Biancavilla CT 19 24007 631108
Pedara CT 20 14102 645210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km W of Catania (314555 inhabitants)
26 Km SW of Acireale (52622 inhabitants)
57 Km NW of Siracusa (122291 inhabitants)
64 Km N of Ragusa (73313 inhabitants)
68 Km NE of Vittoria (63339 inhabitants)
70 Km N of Modica (54633 inhabitants)
75 Km NE of Gela (75827 inhabitants)
76 Km E of Caltanissetta (63360 inhabitants)
95 Km SW of Reggio di Calabria (183035 inhabitants)
97 Km SW of Messina (238439 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 1.9 2021-12-24
05:43:58		 37.4762 14.9252 10 2022-03-30
13:04:24		 Bollettino Sismico Italiano INGV 99061221
Reviewed
Rev100 		ML 2.0 2021-12-24
05:43:58		 37.4753 14.9202 9 2021-12-24
05:48:44		 Sala Sismica INGV-Roma 98888071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-24 05:43:58 ± 0.08
Latitude 37.4762 ± 0.0027
Longitude 14.9252 ± 0.0079
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99061221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 693
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 63
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.53874
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 37
Type of magnitude ML
Reference to an origin 99061221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-15 16:57:25

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 48
Type of magnitude ML
Reference to an origin 98888071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-24 05:48:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCIAC.HHZ. 2021-12-24T05:44:43.32 3.0 undecidable manual S 0.59 0
IV.PLAC.HHZ. 2021-12-24T05:44:25.73 0.3 undecidable manual P 50 170.7957 50 -0.71 44
IV.MPNC.HHZ. 2021-12-24T05:44:23.84 0.6 undecidable manual S 27 83.25 50 0.36 41
IV.ISPIC.EHZ. 2021-12-24T05:44:22.88 0.6 undecidable manual S 181 77.1672 50 1.02 33
IV.JOPP.HHZ. 2021-12-24T05:44:22.41 0.3 undecidable manual P 33 150.9378 50 -0.96 43
IV.MCPD.HHZ. 2021-12-24T05:44:21.43 0.6 undecidable manual S 347 73.371 50 0.58 39
IV.AIO.HHZ. 2021-12-24T05:44:18.08 0.3 undecidable manual S 26 61.1943 50 0.5 63
IV.HVIT.HHZ. 2021-12-24T05:44:18.27 0.6 undecidable manual S 214 64.3911 50 -0.18 44
IV.HMDC.HHZ. 2021-12-24T05:44:17.35 0.6 undecidable manual S 192 58.6968 50 0.42 43
IV.RAFF.HHZ. 2021-12-24T05:44:17.67 0.6 undecidable manual S 241 57.0984 50 1.19 31
IV.HSRS.HHZ. 2021-12-24T05:44:15.12 0.6 undecidable manual S 148 49.9167 50 0.53 42
IV.MSRU.HHZ. 2021-12-24T05:44:15.56 0.3 undecidable manual P 30 101.2209 50 -0.16 62
IV.MTTG.HHZ. 2021-12-24T05:44:14.19 0.3 undecidable manual P 49 89.6436 50 0.26 62
IV.PLLN.EHZ. 2021-12-24T05:44:13.98 0.6 undecidable manual P 310 89.3439 50 0.09 43
IV.GALF.HHZ. 2021-12-24T05:44:13.28 0.6 undecidable manual S 310 40.8258 50 1.12 33
IV.CSLB.HHZ. 2021-12-24T05:44:13.90 0.3 undecidable manual P 304 91.7415 50 -0.35 61
IV.SSY.HHZ. 2021-12-24T05:44:12.39 0.6 undecidable manual S 160 37.629 50 1.08 34
IV.MPNC.HHZ. 2021-12-24T05:44:12.72 0.1 undecidable manual P 27 83.25 50 -0.23 85
IV.EPOZ.HHZ. 2021-12-24T05:44:11.48 0.6 undecidable manual S 47 31.746 50 1.76 23
IV.MCPD.HHZ. 2021-12-24T05:44:11.43 0.3 undecidable manual P 347 73.371 50 0 68
IV.ISPIC.EHZ. 2021-12-24T05:44:11.85 0.1 undecidable manual P 181 77.1672 50 -0.17 87
IV.HVZN.HHZ. 2021-12-24T05:44:11.33 0.6 undecidable manual S 209 37.8288 50 -0.03 48
IV.ECBD.HHN. 2021-12-24T05:44:10.20 0.6 undecidable manual S 23 36.5412 50 -0.82 38
IV.EMCN.HHN. 2021-12-24T05:44:10.15 0.6 undecidable manual S 15 36.2415 50 -0.77 39
IV.HVIT.HHZ. 2021-12-24T05:44:09.27 0.3 undecidable manual P 214 64.3911 50 -0.78 56
IV.ECZM.HHZ. 2021-12-24T05:44:09.72 0.6 undecidable manual S 356 28.3494 50 0.9 38
IV.AIO.HHZ. 2021-12-24T05:44:09.32 0.1 positive manual P 26 61.1943 50 -0.23 88
IV.EVRN.HNN. 2021-12-24T05:44:09.92 0.6 undecidable manual S 38 30.0477 50 0.66 41
IV.HAGA.HHZ. 2021-12-24T05:44:09.64 0.6 undecidable manual S 136 29.3484 50 0.56 43
IV.HMDC.HHZ. 2021-12-24T05:44:08.68 0.1 undecidable manual P 192 58.6968 50 -0.49 84
IV.ECHR.HNZ. 2021-12-24T05:44:08.29 0.6 undecidable manual S 357 23.3544 113 0.9 38
IV.EMFS.HHZ. 2021-12-24T05:44:08.73 0.6 undecidable manual S 13 27.75 50 0.07 48
MN.VAE.HHZ. 2021-12-24T05:44:08.21 0.3 undecidable manual P 269 50.3163 50 0.33 66
IV.EMPL.HHZ. 2021-12-24T05:44:08.03 0.6 undecidable manual S 10 22.8549 114 0.79 40
IV.ESPC.HHZ. 2021-12-24T05:44:08.08 0.6 undecidable manual S 20 25.6521 50 -0.01 49
IV.RAFF.HHZ. 2021-12-24T05:44:08.54 0.1 positive manual P 241 57.0984 50 -0.37 86
IV.ESLN.HHZ. 2021-12-24T05:44:08.11 0.6 undecidable manual S 10 24.4533 112 0.35 46
IV.HSRS.HHZ. 2021-12-24T05:44:07.55 0.1 negative manual P 148 49.9167 50 -0.27 90
IT.LNT.HGZ. 2021-12-24T05:44:07.17 0.3 undecidable manual S 162 21.867 115 0.23 71
IV.GALF.HHZ. 2021-12-24T05:44:06.21 0.1 undecidable manual P 310 40.8258 50 -0.21 92
IV.EPZF.HHZ. 2021-12-24T05:44:06.40 0.1 undecidable manual P 351 39.0276 50 0.26 91
IV.HLNI.HHZ. 2021-12-24T05:44:05.29 0.6 undecidable manual S 198 14.9739 124 0.47 46
IV.EMCN.HHN. 2021-12-24T05:44:05.05 0.1 undecidable manual P 15 36.2415 50 -0.65 82
IV.SSY.HHZ. 2021-12-24T05:44:05.94 0.1 negative manual P 160 37.629 50 0.01 96
IV.EPIT.HHZ. 2021-12-24T05:44:05.88 0.1 negative manual P 17 38.9277 50 -0.24 92
IV.EMNR.HHZ. 2021-12-24T05:44:05.92 0.3 undecidable manual P 13 38.8278 50 -0.18 70
IV.ESAL.HHE. 2021-12-24T05:44:05.67 0.3 undecidable manual P 31 36.0417 50 0 73
IV.ECBD.HHN. 2021-12-24T05:44:05.04 0.1 undecidable manual P 23 36.5412 50 -0.72 80
IV.EPOZ.HHZ. 2021-12-24T05:44:05.46 0.1 positive manual P 47 31.746 50 0.45 89
IV.HVZN.HHZ. 2021-12-24T05:44:05.74 0.1 undecidable manual P 209 37.8288 50 -0.22 92
IV.ESML.HHZ. 2021-12-24T05:44:05.34 0.6 undecidable manual S 346 16.2726 122 0.13 49
IV.ESVO.HHE. 2021-12-24T05:44:05.61 0.1 undecidable manual P 3 32.9448 50 0.41 90
IV.ESCV.HHN. 2021-12-24T05:44:05.09 0.3 undecidable manual P 342 31.5462 50 0.11 72
IV.EVRN.HNN. 2021-12-24T05:44:04.61 0.3 undecidable manual P 38 30.0477 50 -0.13 72
IV.HAGA.HHZ. 2021-12-24T05:44:04.49 0.1 negative manual P 136 29.3484 50 -0.15 95
IV.ECZM.HHZ. 2021-12-24T05:44:04.61 0.1 undecidable manual P 356 28.3494 50 0.12 96
IV.EMFS.HHZ. 2021-12-24T05:44:04.00 0.3 undecidable manual P 13 27.75 50 -0.4 68
IV.ESLN.HHZ. 2021-12-24T05:44:03.91 0.1 undecidable manual P 10 24.4533 112 0.04 98
IV.ECHR.HNZ. 2021-12-24T05:44:03.56 0.3 undecidable manual P 357 23.3544 113 -0.1 73
IV.EMPL.HHZ. 2021-12-24T05:44:03.52 0.1 undecidable manual P 10 22.8549 114 -0.05 98
IV.ESPC.HHZ. 2021-12-24T05:44:03.65 0.1 positive manual P 20 25.6521 50 -0.42 91
IT.LNT.HGZ. 2021-12-24T05:44:03.35 0.1 undecidable manual P 162 21.867 115 -0.05 98
IV.ESML.HHZ. 2021-12-24T05:44:02.25 0.1 undecidable manual P 346 16.2726 122 -0.15 97
IV.HLNI.HHZ. 2021-12-24T05:44:02.21 0.1 negative manual P 198 14.9739 124 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HNN. ML:1.5 0.0003078444 0.0992 AML other m 2021-12-24T05:44:04.54
IV.ESML.HHN. ML:1.7 0.00042576955 0.0992 AML other m 2021-12-24T05:44:04.54
IV.ESML.HNE. ML:1.5 0.000272291 0.0896 AML other m 2021-12-24T05:44:04.77
IV.ESML.HHE. ML:1.6 0.00039877255 0.0608 AML other m 2021-12-24T05:44:04.81
IV.HLNI.HHE. ML:2.4 0.002515881 0.1408 AML other m 2021-12-24T05:44:05.46
IV.HLNI.HHN. ML:2.0 0.00104253095 0.4 AML other m 2021-12-24T05:44:05.51
IV.EMPL.HHE. ML:2.5 0.0021561950000000005 0.56 AML other m 2021-12-24T05:44:08.45
IV.EMPL.HHN. ML:2.7 0.0035691085 0.1984 AML other m 2021-12-24T05:44:08.57
IV.HAGA.HHE. ML:1.7 0.000263919825 0.1984 AML other m 2021-12-24T05:44:09.73
IV.HAGA.HHN. ML:1.7 0.0002359894 0.1216 AML other m 2021-12-24T05:44:09.73
IV.HVZN.HHE. ML:2.0 0.00035096244999999996 0.8 AML other m 2021-12-24T05:44:12.26
IV.SSY.HHE. ML:2.1 0.0004273044 0.2016 AML other m 2021-12-24T05:44:12.46
IV.HVZN.HHN. ML:1.9 0.00029506345 0.4608 AML other m 2021-12-24T05:44:12.43
IV.EPZF.HHE. ML:1.6 0.00014239929500000002 0.6176 AML other m 2021-12-24T05:44:12.24
IV.SSY.HNN. ML:1.7 0.00017877884999999998 0.128 AML other m 2021-12-24T05:44:12.54
IV.GALF.HNE. ML:1.6 0.00012978614999999998 0.7008 AML other m 2021-12-24T05:44:13.09
IV.GALF.HHE. ML:2.0 0.0003252619 0.3392 AML other m 2021-12-24T05:44:13.72
IV.HSRS.HHE. ML:1.3 0.00005473044 0.4192 AML other m 2021-12-24T05:44:15.37
IV.HSRS.HHN. ML:1.8 0.00015099999999999998 0.36 AML other m 2021-12-24T05:44:15.42
IV.HMDC.HHN. ML:1.7 0.000107420185 0.24 AML other m 2021-12-24T05:44:17.65
IV.HMDC.HHE. ML:1.8 0.00012457165 0.64 AML other m 2021-12-24T05:44:17.97
IV.HMDC.HNE. ML:1.8 0.00014767894999999996 0.64 AML other m 2021-12-24T05:44:17.65
IV.HMDC.HNN. ML:1.9 0.0001830057 0.7104 AML other m 2021-12-24T05:44:17.83
IV.AIO.HHN. ML:1.3 0.000041683540000000004 0.1984 AML other m 2021-12-24T05:44:18.65
IV.HVIT.HHN. ML:2.1 0.00021645375 0.3008 AML other m 2021-12-24T05:44:18.88
IV.AIO.HHE. ML:1.8 0.00014175576 0.6592 AML other m 2021-12-24T05:44:19.12
IV.HVIT.HHE. ML:1.7 0.00009287309 0.16 AML other m 2021-12-24T05:44:18.83
IV.MCPD.HHE. ML:1.9 0.0001155 1.54 AML other m 2021-12-24T05:44:21.97
IV.MCPD.HHN. ML:1.6 0.000056512590000000004 0.3776 AML other m 2021-12-24T05:44:22.28
IV.ISPIC.HNE. ML:2.2 0.00023934454 0.2816 AML other m 2021-12-24T05:44:23.03
IV.ISPIC.EHN. ML:2.2 0.00024297979999999997 0.16 AML other m 2021-12-24T05:44:23.11
IV.ISPIC.EHE. ML:2.2 0.00021672874000000001 0.24 AML other m 2021-12-24T05:44:23.03
IV.ISPIC.HNN. ML:2.4 0.000343 0.58 AML other m 2021-12-24T05:44:23.40
IV.MPNC.HHN. ML:1.8 0.0000842 0.36 AML other m 2021-12-24T05:44:24.05
IV.MPNC.HHE. ML:1.6 0.000056427015 1.1392 AML other m 2021-12-24T05:44:24.68
IV.MSRU.HHN. ML:2.1 0.0001215 0.62 AML other m 2021-12-24T05:44:30.65
IV.MSRU.HHE. ML:2.1 0.00011606345 0.2592 AML other m 2021-12-24T05:44:30.74
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
Waveforms Seismic signals in miniseed + resp format Download