Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 24-12-2021 and time 06:29:21 (UTC) in region 6 km SW Motta Sant'Anastasia (CT)

A magnitude ML 2.0 earthquake occured in region: 6 km SW Motta Sant'Anastasia (CT), on

  • 24-12-2021 06:29:21 (UTC)
  • 24-12-2021 07:29:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4710, 14.9210 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 10 49410 61526
Paternò CT 12 48228 109754
Camporotondo Etneo CT 13 5023 114777
Belpasso CT 14 28108 142885
San Pietro Clarenza CT 15 7743 150628
Catania CT 15 314555 465183
Gravina di Catania CT 16 25838 491021
Mascalucia CT 16 31958 522979
Santa Maria di Licodia CT 17 7641 530620
Sant'Agata li Battiati CT 17 9479 540099
Tremestieri Etneo CT 18 20589 560688
Ragalna CT 18 3924 564612
Nicolosi CT 19 7463 572075
San Giovanni la Punta CT 19 23060 595135
Biancavilla CT 20 24007 619142
San Gregorio di Catania CT 20 11966 631108

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km W of Catania (314555 inhabitants)
27 Km SW of Acireale (52622 inhabitants)
56 Km NW of Siracusa (122291 inhabitants)
63 Km N of Ragusa (73313 inhabitants)
67 Km NE of Vittoria (63339 inhabitants)
69 Km N of Modica (54633 inhabitants)
74 Km NE of Gela (75827 inhabitants)
76 Km E of Caltanissetta (63360 inhabitants)
95 Km SW of Reggio di Calabria (183035 inhabitants)
98 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 2.0 2021-12-24
06:29:21		 37.4712 14.9208 10 2022-03-30
13:04:24		 Bollettino Sismico Italiano INGV 99061781
Reviewed
Rev100 		ML 2.1 2021-12-24
06:29:21		 37.4517 14.9832 10 2021-12-24
06:33:52		 Sala Sismica INGV-Roma 98890501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-24 06:29:21 ± 0.07
Latitude 37.4712 ± 0.0027
Longitude 14.9208 ± 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 99061781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 695
Semi-minor axis of confidence ellipse (meter) 58
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
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) 85
Number of associated phases, regardless of their use for origin computation 62
Number of defining phases 62
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.12860
Epicentral distance of station farthest from the epicenter (degree) 1.54414
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 98890501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-24 06:33:52

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 99061781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-15 17:40:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-12-24T06:29:48.64 0.3 undecidable manual P 50 171.3951 50 -0.84 41
IV.MPNC.HHZ. 2021-12-24T06:29:46.96 0.6 undecidable manual S 27 83.9493 50 0.39 41
IV.JOPP.HHZ. 2021-12-24T06:29:45.44 0.3 undecidable manual P 33 151.5372 50 -0.98 42
IV.ISPIC.EHZ. 2021-12-24T06:29:45.38 0.6 undecidable manual S 181 76.6677 50 0.76 38
IV.MCPD.HHZ. 2021-12-24T06:29:44.70 0.6 undecidable manual S 347 73.8705 50 0.82 37
IV.AIO.HHZ. 2021-12-24T06:29:41.10 0.6 undecidable manual S 26 61.8936 50 0.43 43
IV.HVIT.HHZ. 2021-12-24T06:29:40.96 0.6 undecidable manual S 214 63.7917 50 -0.22 43
IV.RAFF.HHZ. 2021-12-24T06:29:40.48 0.6 undecidable manual S 241 56.499 50 1.25 32
IV.HMDC.HHZ. 2021-12-24T06:29:39.88 0.6 undecidable manual S 192 58.0974 50 0.21 46
IV.MSRU.HHZ. 2021-12-24T06:29:38.94 0.3 undecidable manual P 30 101.9202 50 0.18 62
IV.CLTA.HHZ. 2021-12-24T06:29:37.24 0.3 undecidable manual P 248 91.4418 50 0.08 65
IV.MTTG.HHZ. 2021-12-24T06:29:37.20 0.3 undecidable manual P 49 90.243 50 0.22 63
IV.MPNC.HHZ. 2021-12-24T06:29:35.62 0.3 undecidable manual P 27 83.9493 50 -0.38 62
IV.SSY.HHZ. 2021-12-24T06:29:35.20 0.6 undecidable manual S 159 37.3293 50 1.08 35
IV.EPOZ.HHZ. 2021-12-24T06:29:34.77 0.6 undecidable manual S 47 32.3454 50 1.96 20
IV.MCPD.HHZ. 2021-12-24T06:29:34.59 0.3 undecidable manual P 347 73.8705 50 0.14 66
IV.HVZN.HHZ. 2021-12-24T06:29:34.17 0.6 undecidable manual S 209 37.2294 50 0.08 48
IV.ISPIC.EHZ. 2021-12-24T06:29:34.75 0.3 undecidable manual P 181 76.6677 50 -0.13 66
IV.MSFR.HHZ. 2021-12-24T06:29:33.70 0.3 undecidable manual P 335 68.7756 50 0.04 68
IV.EMCN.HHN. 2021-12-24T06:29:33.47 0.6 undecidable manual S 16 36.8298 50 -0.53 43
IV.EVRN.HHZ. 2021-12-24T06:29:33.11 0.6 undecidable manual S 38 30.6471 50 0.76 41
IV.ECBD.HHN. 2021-12-24T06:29:33.58 0.6 undecidable manual S 23 37.2294 50 -0.52 43
IV.AIO.HHZ. 2021-12-24T06:29:32.40 0.1 undecidable manual P 26 61.8936 50 -0.2 89
IV.HAGA.HHZ. 2021-12-24T06:29:32.42 0.6 undecidable manual S 135 29.2485 50 0.46 45
IV.HVIT.HHZ. 2021-12-24T06:29:32.23 0.1 undecidable manual P 214 63.7917 50 -0.66 77
IV.ECZM.HHN. 2021-12-24T06:29:32.38 0.6 undecidable manual S 357 28.8489 50 0.51 45
IV.ESLN.HHZ. 2021-12-24T06:29:31.32 0.6 undecidable manual S 11 25.0527 50 0.46 45
IV.ECHR.HNZ. 2021-12-24T06:29:31.37 0.6 undecidable manual S 358 23.8539 50 0.83 38
MN.VAE.HHZ. 2021-12-24T06:29:31.08 0.3 undecidable manual P 270 50.0166 50 0.31 67
IV.RAFF.HHZ. 2021-12-24T06:29:31.39 0.1 positive manual P 241 56.499 50 -0.37 86
IV.EMPL.HHZ. 2021-12-24T06:29:31.23 0.6 undecidable manual S 11 23.4543 50 0.81 38
IV.HMDC.HHZ. 2021-12-24T06:29:31.55 0.3 undecidable manual P 192 58.0974 50 -0.47 63
IV.ESPC.HHZ. 2021-12-24T06:29:31.11 0.6 undecidable manual S 21 26.2515 50 -0.07 48
IV.HSRS.HHZ. 2021-12-24T06:29:30.44 0.3 undecidable manual P 148 49.7169 50 -0.28 67
IT.LNT.HGZ. 2021-12-24T06:29:30.21 0.3 undecidable manual S 161 21.4674 116 0.36 68
IV.EPZF.HHZ. 2021-12-24T06:29:29.39 0.3 undecidable manual P 352 39.5271 50 0.23 69
IV.GALF.HHZ. 2021-12-24T06:29:29.43 0.1 undecidable manual P 311 40.9257 50 0.06 96
IV.EFIU.HHZ. 2021-12-24T06:29:29.72 0.3 undecidable manual P 36 43.5231 50 -0.05 71
IV.EMNR.HHZ. 2021-12-24T06:29:29.03 0.3 undecidable manual P 14 39.4272 50 -0.11 71
IV.EPOZ.HHZ. 2021-12-24T06:29:28.51 0.1 positive manual P 47 32.3454 50 0.46 89
IV.ESAL.HHE. 2021-12-24T06:29:28.53 0.3 undecidable manual P 31 36.6411 50 -0.18 70
IV.EPDN.HHZ. 2021-12-24T06:29:28.78 0.3 undecidable manual P 14 33.744 50 0.51 66
IV.EPIT.HHN. 2021-12-24T06:29:28.97 0.3 undecidable manual P 18 39.5271 50 -0.19 70
IV.ESML.HHZ. 2021-12-24T06:29:28.67 0.6 undecidable manual S 347 16.6722 122 0.28 46
IV.HVZN.HHZ. 2021-12-24T06:29:28.54 0.3 undecidable manual P 209 37.2294 50 -0.26 69
IV.EMCN.HHN. 2021-12-24T06:29:28.16 0.1 undecidable manual P 16 36.8298 50 -0.58 85
IV.ESVO.HHE. 2021-12-24T06:29:28.68 0.3 undecidable manual P 4 33.5442 50 0.44 67
IV.HLNI.HHZ. 2021-12-24T06:29:28.04 0.3 undecidable manual S 198 14.2746 126 0.34 68
IV.SSY.HHZ. 2021-12-24T06:29:28.79 0.1 negative manual P 159 37.3293 50 -0.02 96
IV.ECBD.HHN. 2021-12-24T06:29:28.15 0.1 positive manual P 23 37.2294 50 -0.65 82
IV.HAGA.HHZ. 2021-12-24T06:29:27.43 0.1 negative manual P 135 29.2485 50 -0.13 95
IV.ECZM.HHN. 2021-12-24T06:29:27.66 0.1 undecidable manual P 357 28.8489 50 0.14 96
IV.ESCV.HHN. 2021-12-24T06:29:27.98 0.3 undecidable manual P 343 31.9458 50 -0.01 73
IV.EVRN.HHZ. 2021-12-24T06:29:27.58 0.3 undecidable manual P 38 30.6471 50 -0.21 71
IV.EMFS.HHZ. 2021-12-24T06:29:27.06 0.1 undecidable manual P 14 28.3494 50 -0.38 91
IV.ESLN.HHZ. 2021-12-24T06:29:26.87 0.1 undecidable manual P 11 25.0527 50 -0.06 99
IV.ESPC.HHZ. 2021-12-24T06:29:26.75 0.1 positive manual P 21 26.2515 50 -0.36 92
IT.LNT.HGZ. 2021-12-24T06:29:26.28 0.1 undecidable manual P 161 21.4674 116 -0.07 99
IV.ECHR.HNZ. 2021-12-24T06:29:26.67 0.1 undecidable manual P 358 23.8539 50 -0.07 99
IV.EMPL.HHZ. 2021-12-24T06:29:26.64 0.1 undecidable manual P 11 23.4543 50 -0.04 98
IV.HLNI.HHZ. 2021-12-24T06:29:25.05 0.1 negative manual P 198 14.2746 126 -0.05 100
IV.ESML.HHZ. 2021-12-24T06:29:25.24 0.1 undecidable manual P 347 16.6722 122 -0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HNN. ML:1.7 0.0004305907 0.08 AML other m 2021-12-24T06:29:27.69
IV.ESML.HHN. ML:1.8 0.00062302635 0.08 AML other m 2021-12-24T06:29:27.73
IV.HLNI.HHE. ML:2.3 0.0021433419999999995 0.1408 AML other m 2021-12-24T06:29:28.24
IV.HLNI.HHN. ML:2.2 0.0017457315000000003 0.2784 AML other m 2021-12-24T06:29:28.30
IV.EMPL.HHE. ML:2.7 0.0031034035 0.5984 AML other m 2021-12-24T06:29:31.95
IV.EMPL.HHN. ML:2.8 0.004190177000000001 0.2208 AML other m 2021-12-24T06:29:31.76
IV.HAGA.HHE. ML:1.9 0.0003807655 0.1792 AML other m 2021-12-24T06:29:32.56
IV.HAGA.HHN. ML:2.0 0.0004869158 0.4608 AML other m 2021-12-24T06:29:32.80
IV.HVZN.HHE. ML:2.1 0.00043304834999999996 0.48 AML other m 2021-12-24T06:29:34.98
IV.SSY.HNN. ML:1.8 0.00023922055 0.272 AML other m 2021-12-24T06:29:35.34
IV.SSY.HHE. ML:2.1 0.00045133574999999996 0.4992 AML other m 2021-12-24T06:29:35.33
IV.SSY.HNE. ML:1.9 0.00032032595 0.2112 AML other m 2021-12-24T06:29:35.59
IV.SSY.HHN. ML:2.4 0.000986162 0.1984 AML other m 2021-12-24T06:29:35.87
IV.HSRS.HHN. ML:1.4 0.00007132524 0.5216 AML other m 2021-12-24T06:29:38.29
IV.HSRS.HHE. ML:1.6 0.00010146454999999999 0.32 AML other m 2021-12-24T06:29:38.22
IV.HMDC.HHE. ML:1.9 0.0001723179 0.3584 AML other m 2021-12-24T06:29:40.03
IV.HMDC.HHN. ML:1.8 0.0001322993 0.4992 AML other m 2021-12-24T06:29:40.20
IV.RAFF.HHN. ML:1.7 0.00010482425 0.2592 AML other m 2021-12-24T06:29:40.61
IV.HMDC.HNE. ML:2.0 0.0001974688 1.2704 AML other m 2021-12-24T06:29:40.21
IV.HVIT.HHN. ML:2.1 0.0002539372 0.24 AML other m 2021-12-24T06:29:41.57
IV.HVIT.HHE. ML:1.9 0.00015414725000000002 0.1792 AML other m 2021-12-24T06:29:41.79
IV.AIO.HHE. ML:1.9 0.0001565948 0.6816 AML other m 2021-12-24T06:29:42.30
IV.AIO.HHN. ML:1.5 0.000062391635 1.1584 AML other m 2021-12-24T06:29:41.70
IV.MSFR.HHN. ML:1.5 0.000055849999999999996 0.18 AML other m 2021-12-24T06:29:45.12
IV.MCPD.HHE. ML:2.0 0.00014000000000000001 0.44 AML other m 2021-12-24T06:29:45.11
IV.MCPD.HHN. ML:1.8 0.00009274349000000001 1.6224 AML other m 2021-12-24T06:29:45.16
IV.ISPIC.HNN. ML:2.4 0.0004097628 0.528 AML other m 2021-12-24T06:29:45.99
IV.ISPIC.EHN. ML:2.4 0.00033031509999999995 0.5184 AML other m 2021-12-24T06:29:45.99
IV.ISPIC.EHE. ML:2.2 0.000215581 0.32 AML other m 2021-12-24T06:29:45.74
IV.ISPIC.HNE. ML:2.2 0.00023558584999999998 0.528 AML other m 2021-12-24T06:29:46.00
IV.MPNC.HHN. ML:1.9 0.00010415836 0.2592 AML other m 2021-12-24T06:29:47.26
IV.MPNC.HHE. ML:1.8 0.00008914177500000001 0.4384 AML other m 2021-12-24T06:29:47.86
IV.JOPP.HHN. ML:1.8 0.00003695 0.42 AML other m 2021-12-24T06:30:04.24
IV.JOPP.HHE. ML:1.7 0.00002303549 0.32 AML other m 2021-12-24T06:30:05.55
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