Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 23-12-2021 and time 21:34:09 (Italy) in region 7 km SW Motta Sant'Anastasia (CT)

A magnitude ML 2.4 earthquake occured in region: 7 km SW Motta Sant'Anastasia (CT), on

  • 23-12-2021 20:34:09 (UTC)
  • 23-12-2021 21:34:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4750, 14.9090 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 7 12116 12116
Misterbianco CT 10 49410 61526
Paternò CT 11 48228 109754
Camporotondo Etneo CT 14 5023 114777
Belpasso CT 14 28108 142885
San Pietro Clarenza CT 15 7743 150628
Santa Maria di Licodia CT 16 7641 158269
Catania CT 16 314555 472824
Gravina di Catania CT 17 25838 498662
Mascalucia CT 17 31958 530620
Ragalna CT 18 3924 534544
Sant'Agata li Battiati CT 18 9479 544023
Tremestieri Etneo CT 18 20589 564612
Nicolosi CT 19 7463 572075
Biancavilla CT 19 24007 596082

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Catania (314555 inhabitants)
28 Km SW of Acireale (52622 inhabitants)
57 Km NW of Siracusa (122291 inhabitants)
63 Km N of Ragusa (73313 inhabitants)
67 Km NE of Vittoria (63339 inhabitants)
70 Km N of Modica (54633 inhabitants)
74 Km NE of Gela (75827 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
96 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 2.4 2021-12-23
20:34:09		 37.4753 14.9087 10 2022-03-30
13:04:40		 Bollettino Sismico Italiano INGV 101754451
Reviewed
Rev100 		ML 2.4 2021-12-23
20:34:09		 37.4702 14.9013 10 2021-12-23
21:02:33		 Sala Sismica INGV-Roma 98863471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-23 20:34:09 ± 0.08
Latitude 37.4753 ± 0.0027
Longitude 14.9087 ± 0.0068
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 101754451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 597
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 64
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.13040
Epicentral distance of station farthest from the epicenter (degree) 1.54953
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 68
Type of magnitude ML
Reference to an origin 101754451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-25 14:55:49

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 86
Type of magnitude ML
Reference to an origin 98863471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-23 21:02:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2021-12-23T20:34:40.96 0.1 undecidable manual S 31 102.0201 50 1.15 29
IV.CRJA.HHZ. 2021-12-23T20:34:37.59 0.1 undecidable manual P 283 171.0954 50 -0.22 34
IV.PLAC.HHZ. 2021-12-23T20:34:36.91 0.1 undecidable manual P 51 171.9945 50 -1.03 38
IV.MPNC.HHZ. 2021-12-23T20:34:35.32 0.1 undecidable manual S 27 84.0492 50 0.32 42
IV.CORL.HHZ. 2021-12-23T20:34:34.75 0.1 undecidable manual P 289 148.3404 50 0.45 36
IV.ISPIC.HNZ. 2021-12-23T20:34:34.03 0.1 undecidable manual S 180 77.0673 50 0.87 34
IV.CROCE.HHZ. 2021-12-23T20:34:33.70 0.1 undecidable manual S 205 78.5658 50 0.14 44
IV.SOLUN.HHZ. 2021-12-23T20:34:32.51 0.1 undecidable manual P 300 138.6612 50 -0.3 57
IV.MCPD.HHZ. 2021-12-23T20:34:32.81 0.1 undecidable manual S 348 73.1712 50 0.7 37
IY.OPPI.HHZ. 2021-12-23T20:34:31.72 0.1 undecidable manual P 47 130.4694 50 0.18 39
IV.HVIT.HHZ. 2021-12-23T20:34:29.56 0.1 undecidable manual S 213 63.492 50 0.03 69
IV.IFIL.HHZ. 2021-12-23T20:34:29.83 0.1 undecidable manual P 347 124.2867 50 -0.76 34
IV.HMDC.HHZ. 2021-12-23T20:34:28.45 0.1 undecidable manual S 191 58.3971 50 0.3 44
IV.MSRU.HHZ. 2021-12-23T20:34:27.06 0.1 undecidable manual P 31 102.0201 50 -0.1 64
IV.HSRS.HHZ. 2021-12-23T20:34:26.59 0.1 undecidable manual S 147 50.7159 50 0.49 42
IV.CLTA.HHZ. 2021-12-23T20:34:25.78 0.1 undecidable manual P 247 90.6426 50 0.38 61
IV.MTTG.HHZ. 2021-12-23T20:34:25.36 0.1 undecidable manual P 50 90.8424 50 -0.07 66
IV.MILZ.HHZ. 2021-12-23T20:34:25.40 0.1 undecidable manual P 18 92.7405 50 -0.33 62
IV.CROCE.HHZ. 2021-12-23T20:34:23.07 0.1 undecidable manual P 205 78.5658 50 -0.48 62
IV.ISPIC.HNZ. 2021-12-23T20:34:23.10 0.1 undecidable manual P 180 77.0673 50 -0.22 87
IV.MPNC.HHZ. 2021-12-23T20:34:23.92 0.1 undecidable manual P 27 84.0492 50 -0.46 61
IV.SSY.HHZ. 2021-12-23T20:34:23.54 0.1 undecidable manual S 157 38.1285 50 0.78 39
IV.MCPD.HHZ. 2021-12-23T20:34:22.77 0.1 undecidable manual P 348 73.1712 50 0.06 68
IV.HVZN.HHZ. 2021-12-23T20:34:22.29 0.1 undecidable manual S 207 37.1295 50 -0.19 48
IV.MSFR.HHZ. 2021-12-23T20:34:22.06 0.1 undecidable manual P 336 67.8765 50 0.16 67
IV.EVRN.HHZ. 2021-12-23T20:34:21.30 0.1 undecidable manual S 40 30.9468 50 0.45 45
IV.HAGA.HHZ. 2021-12-23T20:34:20.98 0.1 undecidable manual S 134 30.2475 50 0.31 46
IV.AIO.HHZ. 2021-12-23T20:34:20.80 0.1 undecidable manual P 27 61.8936 50 -0.19 68
IV.HMDC.HHZ. 2021-12-23T20:34:20.07 0.1 undecidable manual P 191 58.3971 50 -0.36 66
IV.HVIT.HHZ. 2021-12-23T20:34:20.64 0.1 undecidable manual P 213 63.492 50 -0.59 82
MN.VAE.HHZ. 2021-12-23T20:34:19.53 0.1 undecidable manual P 269 48.9177 50 0.56 42
IV.ESLN.HHZ. 2021-12-23T20:34:19.73 0.1 undecidable manual S 13 24.8529 112 0.54 44
IV.RAFF.HHZ. 2021-12-23T20:34:19.88 0.1 positive manual P 240 55.6998 50 -0.15 92
IV.EMPL.HHZ. 2021-12-23T20:34:19.23 0.1 undecidable manual S 13 23.2545 113 0.57 68
IV.EFIU.HHE. 2021-12-23T20:34:18.17 0.1 undecidable manual P 37 43.8228 50 -0.01 73
IV.HSRS.HHZ. 2021-12-23T20:34:18.91 0.1 undecidable manual P 147 50.7159 50 -0.34 89
IV.ECTS.HHZ. 2021-12-23T20:34:18.77 0.1 undecidable manual P 22 48.8178 50 -0.19 69
IT.LNT.HGZ. 2021-12-23T20:34:18.79 0.1 undecidable manual S 158 22.3554 114 0.42 47
IV.ESVO.HHE. 2021-12-23T20:34:17.03 0.1 undecidable manual P 6 33.2445 50 0.48 67
IV.GALF.HHZ. 2021-12-23T20:34:17.59 0.1 negative manual P 311 39.8268 50 0.02 97
IV.ESAL.HHZ. 2021-12-23T20:34:17.21 0.1 undecidable manual P 33 36.8298 50 0.1 96
IV.EPIT.HHZ. 2021-12-23T20:34:17.30 0.1 undecidable manual P 19 39.4272 50 -0.22 93
IV.EPZF.HHZ. 2021-12-23T20:34:17.82 0.1 undecidable manual P 353 38.9277 50 0.38 68
IV.SSY.HHZ. 2021-12-23T20:34:17.31 0.1 undecidable manual P 157 38.1285 50 0 98
IV.EMNR.HHZ. 2021-12-23T20:34:17.40 0.1 undecidable manual P 15 39.2274 50 -0.09 72
IV.HVZN.HHZ. 2021-12-23T20:34:16.88 0.1 undecidable manual P 207 37.1295 50 -0.27 93
IV.EMCN.HHN. 2021-12-23T20:34:16.17 0.1 undecidable manual P 17 36.741 50 -0.92 37
IV.ESML.HHZ. 2021-12-23T20:34:16.81 0.1 undecidable manual S 351 16.0728 122 0.37 48
IV.ECBD.HHN. 2021-12-23T20:34:16.50 0.1 undecidable manual P 25 37.2294 50 -0.68 62
IV.ESCV.HHZ. 2021-12-23T20:34:16.46 0.1 undecidable manual P 345 31.2465 50 0.21 95
IV.ECZM.HHN. 2021-12-23T20:34:16.08 0.1 undecidable manual P 359 28.3494 50 0.26 94
IV.EPOZ.HHZ. 2021-12-23T20:34:16.89 0.1 positive manual P 48 32.8449 50 0.39 91
IV.EVRN.HHZ. 2021-12-23T20:34:16.08 0.1 undecidable manual P 40 30.9468 50 -0.14 72
IV.HLNI.HHE. 2021-12-23T20:34:16.53 0.1 undecidable manual S 193 14.4744 125 0.55 70
IV.EMFO.HHE. 2021-12-23T20:34:15.66 0.1 undecidable manual P 29 32.9448 50 -0.87 58
IV.EMPL.HHZ. 2021-12-23T20:34:15.04 0.1 positive manual P 13 23.2545 113 0.09 100
IV.ESPC.HHN. 2021-12-23T20:34:15.11 0.1 undecidable manual P 23 26.2515 50 -0.37 93
IV.HAGA.HHZ. 2021-12-23T20:34:15.87 0.1 negative manual P 134 30.2475 50 -0.24 95
IV.EMFS.HHE. 2021-12-23T20:34:15.82 0.1 undecidable manual P 16 28.1496 50 0.04 49
IV.ECHR.HHE. 2021-12-23T20:34:15.32 0.1 undecidable manual P 1 23.3544 113 0.34 71
IV.ESLN.HHZ. 2021-12-23T20:34:15.34 0.1 undecidable manual P 13 24.8529 112 0.09 99
IT.LNT.HGZ. 2021-12-23T20:34:14.76 0.1 negative manual P 158 22.3554 114 -0.03 99
IV.ESML.HHZ. 2021-12-23T20:34:13.51 0.1 negative manual P 351 16.0728 122 -0.16 97
IV.HLNI.HHE. 2021-12-23T20:34:13.58 0.1 undecidable manual P 193 14.4744 125 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:2.2 0.0015311254999999999 0.1536 AML other m 2021-12-23T20:34:17.59
IV.ESML.HNE. ML:2.1 0.0012600925 0.1664 AML other m 2021-12-23T20:34:17.60
IV.ESML.HHN. ML:2.1 0.0012216945 0.1536 AML other m 2021-12-23T20:34:17.51
IV.ESML.HNN. ML:2.1 0.0010725 0.16 AML other m 2021-12-23T20:34:17.51
IV.EMPL.HHE. ML:2.9 0.0056915595 0.6784 AML other m 2021-12-23T20:34:20.29
IV.EMPL.HHN. ML:2.9 0.0054440555 0.2176 AML other m 2021-12-23T20:34:21.61
IV.EVRN.HHE. ML:2.4 0.0011715533 0.3584 AML other m 2021-12-23T20:34:22.50
IV.EVRN.HNE. ML:2.3 0.0009316096999999999 0.3328 AML other m 2021-12-23T20:34:22.50
IV.HAGA.HHE. ML:2.0 0.0005143739 0.2048 AML other m 2021-12-23T20:34:23.05
IV.EPOZ.HHE. ML:2.3 0.0008545 0.2 AML other m 2021-12-23T20:34:23.33
IV.EPOZ.HHN. ML:2.2 0.0006690194499999999 0.2048 AML other m 2021-12-23T20:34:23.23
IV.ESAL.HHE. ML:2.0 0.00041599454999999996 0.2432 AML other m 2021-12-23T20:34:23.51
IV.SSY.HHE. ML:3.0 0.0033710429999999998 0.192 AML other m 2021-12-23T20:34:23.76
IV.ESCV.HHE. ML:2.4 0.001159869 0.6016 AML other m 2021-12-23T20:34:23.37
IV.HAGA.HHN. ML:2.3 0.0009410000000000001 0.08 AML other m 2021-12-23T20:34:24.94
IV.EVRN.HHN. ML:2.4 0.00121824905 0.1792 AML other m 2021-12-23T20:34:24.98
IV.EVRN.HNN. ML:2.5 0.001414414 0.1664 AML other m 2021-12-23T20:34:24.99
IV.SSY.HNN. ML:2.6 0.001393149 0.1664 AML other m 2021-12-23T20:34:25.08
IV.ESCV.HHN. ML:2.4 0.001245 0.28 AML other m 2021-12-23T20:34:25.75
IV.EPOZ.HNE. ML:2.0 0.00046333985499999995 0.1536 AML other m 2021-12-23T20:34:26.69
IV.SSY.HHN. ML:3.1 0.005220000000000001 0.28 AML other m 2021-12-23T20:34:26.90
IV.SSY.HNE. ML:2.6 0.0016 0.28 AML other m 2021-12-23T20:34:26.91
IV.HVZN.HHE. ML:2.6 0.001685 1.46 AML other m 2021-12-23T20:34:27.12
IV.EPZF.HHN. ML:2.5 0.0010625 1.72 AML other m 2021-12-23T20:34:27.13
IV.EPZF.HHE. ML:2.5 0.0010765 0.38 AML other m 2021-12-23T20:34:27.59
IV.HSRS.HHN. ML:2.1 0.00033853869999999996 0.2432 AML other m 2021-12-23T20:34:27.81
IV.GALF.HHN. ML:2.5 0.001175 0.34 AML other m 2021-12-23T20:34:28.28
IV.HSRS.HHE. ML:2.2 0.00040849999999999995 0.18 AML other m 2021-12-23T20:34:29.39
IV.RAFF.HHE. ML:2.3 0.00043000000000000004 0.22 AML other m 2021-12-23T20:34:29.62
IV.HVIT.HHN. ML:2.6 0.00071392885 0.2176 AML other m 2021-12-23T20:34:30.13
IV.RAFF.HHN. ML:2.2 0.00033389655 0.1792 AML other m 2021-12-23T20:34:29.98
IV.HMDC.HHN. ML:2.7 0.0010209826 0.1792 AML other m 2021-12-23T20:34:30.23
IV.HMDC.HNN. ML:2.6 0.0008975 0.26 AML other m 2021-12-23T20:34:30.24
IV.HVIT.HHE. ML:2.4 0.0005105 0.08 AML other m 2021-12-23T20:34:30.48
IV.HMDC.HNE. ML:2.6 0.0008058331000000001 0.32 AML other m 2021-12-23T20:34:30.59
IV.HMDC.HHE. ML:2.6 0.0009162447 0.3328 AML other m 2021-12-23T20:34:30.59
IV.AIO.HHE. ML:2.2 0.00027404485 0.2688 AML other m 2021-12-23T20:34:30.63
IV.HVZN.HHN. ML:2.7 0.0019320719999999997 0.5248 AML other m 2021-12-23T20:34:31.08
IV.AIO.HHN. ML:2.0 0.0001865 1.74 AML other m 2021-12-23T20:34:32.11
IV.MSFR.HHN. ML:1.8 0.00010679329 0.2048 AML other m 2021-12-23T20:34:33.45
IV.MCPD.HHE. ML:2.4 0.0003855 0.42 AML other m 2021-12-23T20:34:33.44
IV.CROCE.HNN. ML:2.6 0.0005044686000000001 0.2432 AML other m 2021-12-23T20:34:34.20
IV.CROCE.HHN. ML:2.5 0.00040849999999999995 0.24 AML other m 2021-12-23T20:34:34.33
IV.CROCE.HNE. ML:2.6 0.0005672871 0.3072 AML other m 2021-12-23T20:34:34.31
IV.CROCE.HHE. ML:2.5 0.00046699999999999997 0.3 AML other m 2021-12-23T20:34:34.32
IV.MCPD.HHN. ML:2.2 0.0002638037 0.2816 AML other m 2021-12-23T20:34:34.43
IV.ISPIC.HNN. ML:2.9 0.001286043 0.2688 AML other m 2021-12-23T20:34:34.66
IV.ISPIC.EHN. ML:2.9 0.001294092 0.256 AML other m 2021-12-23T20:34:34.67
IV.ISPIC.HNE. ML:2.8 0.0009891701 0.1408 AML other m 2021-12-23T20:34:34.99
IV.ISPIC.EHE. ML:2.8 0.00101789275 0.1408 AML other m 2021-12-23T20:34:34.92
IV.MSFR.HHE. ML:1.8 0.000101050225 0.3328 AML other m 2021-12-23T20:34:34.84
MN.VAE.HHN. ML:1.8 0.00015922651999999998 0.5504 AML other m 2021-12-23T20:34:36.14
IV.MPNC.HHN. ML:2.2 0.00021900000000000004 0.46 AML other m 2021-12-23T20:34:36.62
IV.MILZ.HHN. ML:2.5 0.00033670675 0.32 AML other m 2021-12-23T20:34:40.08
IV.MTTG.HHN. ML:2.0 0.00011999999999999999 0.46 AML other m 2021-12-23T20:34:40.98
IV.MILZ.HHE. ML:2.6 0.00040113095 0.32 AML other m 2021-12-23T20:34:41.40
IV.MSRU.HHN. ML:2.4 0.0002534753 0.3328 AML other m 2021-12-23T20:34:42.13
IV.MSRU.HHE. ML:2.5 0.00032270955 0.3584 AML other m 2021-12-23T20:34:43.57
IV.CLTA.HHN. ML:1.8 0.00006898323 0.3584 AML other m 2021-12-23T20:34:43.32
IV.MTTG.HHE. ML:1.8 0.000066232695 0.6144 AML other m 2021-12-23T20:34:44.67
IV.CLTA.HHE. ML:1.9 0.00008815113 0.3584 AML other m 2021-12-23T20:34:45.97
IV.IFIL.HHE. ML:3.1 0.0009775 0.4 AML other m 2021-12-23T20:34:46.22
IV.IFIL.HHN. ML:2.7 0.00038700000000000003 0.32 AML other m 2021-12-23T20:34:48.95
IV.SOLUN.HHN. ML:2.1 0.00007465000000000001 0.4 AML other m 2021-12-23T20:34:54.22
IV.SOLUN.HHE. ML:2.2 0.00008424999999999999 0.44 AML other m 2021-12-23T20:34:57.29
IV.PLAC.HHE. ML:2.0 0.00004130977 0.448 AML other m 2021-12-23T20:35:06.80
IV.PLAC.HNN. ML:2.2 0.00006952799 0.6272 AML other m 2021-12-23T20:35:07.10
IV.PLAC.HHN. ML:2.1 0.0000528 1.36 AML other m 2021-12-23T20:35:07.13
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