Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 24-12-2021 and time 00:06:32 (UTC) in region 7 km SW Motta Sant'Anastasia (CT)

A magnitude ML 1.4 earthquake occured in region: 7 km SW Motta Sant'Anastasia (CT), on

  • 24-12-2021 00:06:32 (UTC)
  • 24-12-2021 01:06:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4700, 14.9160 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 12 48228 109754
Camporotondo Etneo CT 14 5023 114777
Belpasso CT 15 28108 142885
San Pietro Clarenza CT 15 7743 150628
Catania CT 16 314555 465183
Gravina di Catania CT 16 25838 491021
Santa Maria di Licodia CT 17 7641 498662
Mascalucia CT 17 31958 530620
Sant'Agata li Battiati CT 18 9479 540099
Ragalna CT 18 3924 544023
Tremestieri Etneo CT 18 20589 564612
Nicolosi CT 19 7463 572075
Biancavilla CT 20 24007 596082
San Giovanni la Punta CT 20 23060 619142

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Catania (314555 inhabitants)
27 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)
69 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 1.4 2021-12-24
00:06:32		 37.4702 14.9163 10 2022-03-30
13:04:24		 Bollettino Sismico Italiano INGV 99051381
Reviewed
Rev100 		ML 1.7 2021-12-24
00:06:32		 37.4743 14.9337 8 2021-12-24
00:13:22		 Sala Sismica INGV-Roma 98875711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-24 00:06:32 ± 0.08
Latitude 37.4702 ± 0.0036
Longitude 14.9163 ± 0.0091
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 99051381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 808
Semi-minor axis of confidence ellipse (meter) 145
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
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) 0.12680
Epicentral distance of station farthest from the epicenter (degree) 0.92091
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 98875711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-24 00:13:22

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 99051381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-15 14:24:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2021-12-24T00:07:04.08 0.6 undecidable manual S 30 102.2199 50 1.59 23
IV.ISPIC.EHZ. 2021-12-24T00:06:56.41 0.6 undecidable manual S 181 76.5678 50 0.77 36
IV.MCPD.HHZ. 2021-12-24T00:06:55.73 0.6 undecidable manual S 347 73.8705 50 0.79 36
IV.AIO.HHZ. 2021-12-24T00:06:52.32 0.6 undecidable manual S 26 62.1933 50 0.52 41
IV.HVIT.HHZ. 2021-12-24T00:06:51.78 0.6 undecidable manual S 213 63.3921 50 -0.36 43
IV.RAFF.HHZ. 2021-12-24T00:06:51.29 0.6 undecidable manual S 241 55.9995 50 1.12 32
IV.HMDC.HNN. 2021-12-24T00:06:50.91 0.6 undecidable manual S 192 57.8976 50 0.24 44
IV.MSRU.HHZ. 2021-12-24T00:06:49.59 0.3 undecidable manual P 30 102.2199 50 -0.2 61
IV.MPNC.HHZ. 2021-12-24T00:06:46.74 0.3 undecidable manual P 27 84.249 50 -0.28 62
IV.MCPD.HHZ. 2021-12-24T00:06:45.47 0.1 undecidable manual P 347 73.8705 50 0.04 89
IV.ISPIC.EHZ. 2021-12-24T00:06:45.69 0.1 positive manual P 181 76.5678 50 -0.14 87
IV.SSY.HHZ. 2021-12-24T00:06:45.86 0.6 undecidable manual S 158 37.3293 50 0.68 40
IV.HVZN.HHZ. 2021-12-24T00:06:44.87 0.6 undecidable manual S 209 36.9297 50 -0.19 46
IV.HAGA.HHZ. 2021-12-24T00:06:43.32 0.6 undecidable manual S 134 29.4483 50 0.26 46
IV.HMDC.HNN. 2021-12-24T00:06:43.91 0.3 undecidable manual P 192 57.8976 50 0.95 52
IV.HVIT.HHZ. 2021-12-24T00:06:43.01 0.3 undecidable manual P 213 63.3921 50 -0.8 55
IV.AIO.HHZ. 2021-12-24T00:06:43.22 0.3 undecidable manual P 26 62.1933 50 -0.4 64
IV.ESLN.HHZ. 2021-12-24T00:06:42.21 0.6 undecidable manual S 12 25.2525 111 0.39 45
IV.EMPL.HHZ. 2021-12-24T00:06:42.21 0.6 undecidable manual S 12 23.6541 112 0.92 37
IV.RAFF.HHZ. 2021-12-24T00:06:42.21 0.1 positive manual P 241 55.9995 50 -0.47 84
MN.VAE.HHZ. 2021-12-24T00:06:42.18 0.6 undecidable manual P 270 49.617 50 0.5 42
IT.LNT.HGZ. 2021-12-24T00:06:41.09 0.3 undecidable manual S 159 21.5673 114 0.48 67
IV.HSRS.HHZ. 2021-12-24T00:06:41.25 0.3 undecidable manual P 147 49.8168 50 -0.46 64
IV.ESPC.HHZ. 2021-12-24T00:06:41.98 0.6 undecidable manual S 22 26.5512 110 -0.24 47
IV.EPZF.HHZ. 2021-12-24T00:06:40.54 0.6 undecidable manual P 352 39.627 50 0.4 44
IV.GALF.HHZ. 2021-12-24T00:06:40.24 0.3 undecidable manual P 311 40.7259 50 -0.07 71
IV.EPIT.HHN. 2021-12-24T00:06:40.13 0.6 undecidable manual P 18 39.8268 50 -0.04 47
IV.SSY.HHZ. 2021-12-24T00:06:39.61 0.1 negative manual P 158 37.3293 50 -0.18 93
IV.HVZN.HHZ. 2021-12-24T00:06:39.25 0.3 undecidable manual P 209 36.9297 50 -0.47 65
IV.EPOZ.HHZ. 2021-12-24T00:06:39.38 0.1 undecidable manual P 47 32.745 50 0.29 91
IV.ESML.HHZ. 2021-12-24T00:06:39.29 0.6 undecidable manual S 349 16.7721 120 0.16 48
IV.EVRN.HHZ. 2021-12-24T00:06:38.65 0.3 undecidable manual P 38 31.0467 50 -0.17 71
IV.HAGA.HHZ. 2021-12-24T00:06:38.22 0.1 negative manual P 134 29.4483 50 -0.35 91
IV.ECZM.HHZ. 2021-12-24T00:06:38.61 0.3 undecidable manual P 358 28.9488 50 0.1 72
IV.EMFS.HHZ. 2021-12-24T00:06:38.21 0.3 undecidable manual P 15 28.5492 50 -0.23 70
IV.ESCV.HHZ. 2021-12-24T00:06:38.90 0.1 undecidable manual P 344 31.9458 50 -0.07 96
IV.HLNI.HHZ. 2021-12-24T00:06:38.79 0.6 undecidable manual S 196 14.0748 124 0.45 46
IV.EMFO.HHE. 2021-12-24T00:06:38.45 0.3 undecidable manual P 27 33.2445 50 -0.7 60
IV.ESPC.HHZ. 2021-12-24T00:06:37.61 0.1 positive manual P 22 26.5512 110 -0.48 89
IV.ECHR.HNZ. 2021-12-24T00:06:37.47 0.3 undecidable manual P 359 23.9538 112 -0.14 72
IV.EMPL.HHZ. 2021-12-24T00:06:37.62 0.1 undecidable manual P 12 23.6541 112 0.07 97
IV.ESLN.HHZ. 2021-12-24T00:06:37.88 0.1 negative manual P 12 25.2525 111 0.03 98
IT.LNT.HGZ. 2021-12-24T00:06:37.07 0.3 undecidable manual P 159 21.5673 114 -0.09 73
IV.ESML.HHZ. 2021-12-24T00:06:36.18 0.3 undecidable manual P 349 16.7721 120 -0.12 73
IV.HLNI.HHZ. 2021-12-24T00:06:35.83 0.1 negative manual P 196 14.0748 124 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:1.0 0.000079943225 0.1 AML other m 2021-12-24T00:06:38.85
IV.HLNI.HHE. ML:2.0 0.000996 0.14 AML other m 2021-12-24T00:06:38.98
IV.ESML.HHN. ML:0.7 0.000042436875 0.24 AML other m 2021-12-24T00:06:38.79
IV.HLNI.HHN. ML:1.7 0.000557 0.1 AML other m 2021-12-24T00:06:39.05
IV.EMPL.HHE. ML:1.9 0.00046406585 0.66 AML other m 2021-12-24T00:06:42.81
IV.EMPL.HHN. ML:2.1 0.0007613132000000001 0.2 AML other m 2021-12-24T00:06:42.62
IV.HAGA.HHE. ML:1.2 0.00007721478499999999 0.16 AML other m 2021-12-24T00:06:43.37
IV.EVRN.HNN. ML:1.5 0.0001521567 0.65 AML other m 2021-12-24T00:06:43.72
IV.EVRN.HHN. ML:1.4 0.0001277521 0.64 AML other m 2021-12-24T00:06:43.39
IV.HAGA.HHN. ML:1.2 0.00008165812999999999 0.06 AML other m 2021-12-24T00:06:43.52
IV.ESCV.HHE. ML:1.2 0.000070664025 0.58 AML other m 2021-12-24T00:06:44.88
IV.ESCV.HHN. ML:1.3 0.000092403185 0.7 AML other m 2021-12-24T00:06:44.62
IV.HVZN.HHN. ML:1.4 0.000087066035 0.5 AML other m 2021-12-24T00:06:45.58
IV.HVZN.HHE. ML:1.5 0.000114495065 0.5 AML other m 2021-12-24T00:06:45.75
IV.SSY.HNE. ML:1.5 0.000116537065 0.17 AML other m 2021-12-24T00:06:45.00
IV.SSY.HHE. ML:1.8 0.0002521466 0.18 AML other m 2021-12-24T00:06:46.00
IV.GALF.HHE. ML:1.2 0.000060781895 0.32 AML other m 2021-12-24T00:06:47.63
IV.HSRS.HHN. ML:1.4 0.000057850844999999995 0.62 AML other m 2021-12-24T00:06:49.04
IV.HVIT.HHN. ML:1.4 0.00004999216 0.24 AML other m 2021-12-24T00:06:52.49
IV.AIO.HHE. ML:1.2 0.000031111004999999994 0.66 AML other m 2021-12-24T00:06:53.19
IV.MCPD.HHE. ML:1.4 0.000038900000000000004 0.44 AML other m 2021-12-24T00:06:56.26
IV.ISPIC.EHN. ML:1.8 0.00008963728 0.48 AML other m 2021-12-24T00:06:56.80
IV.ISPIC.EHE. ML:1.9 0.000125675065 0.46 AML other m 2021-12-24T00:06:56.57
IV.MCPD.HHN. ML:1.2 0.0000264 0.9 AML other m 2021-12-24T00:06:57.92
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