Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 23-12-2021 and time 22:53:48 (Italy) in region 4 km S Paternò (CT)

A magnitude ML 1.9 earthquake occured in region: 4 km S Paternò (CT), on

  • 23-12-2021 21:53:48 (UTC)
  • 23-12-2021 22:53:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.5460, 14.9080 at 8 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
Paternò CT 4 48228 48228
Motta Sant'Anastasia CT 7 12116 60344
Belpasso CT 8 28108 88452
Santa Maria di Licodia CT 8 7641 96093
Camporotondo Etneo CT 9 5023 101116
Misterbianco CT 9 49410 150526
Ragalna CT 10 3924 154450
San Pietro Clarenza CT 11 7743 162193
Biancavilla CT 11 24007 186200
Nicolosi CT 13 7463 193663
Mascalucia CT 13 31958 225621
Gravina di Catania CT 14 25838 251459
Adrano CT 15 36122 287581
Tremestieri Etneo CT 15 20589 308170
Sant'Agata li Battiati CT 15 9479 317649
Pedara CT 16 14102 331751
Catania CT 17 314555 646306
San Giovanni la Punta CT 17 23060 669366
Centuripe EN 17 5470 674836
Trecastagni CT 17 10910 685746
San Gregorio di Catania CT 18 11966 697712
Viagrande CT 18 8563 706275
Aci Bonaccorsi CT 19 3524 709799
Catenanuova EN 19 4866 714665
Valverde CT 20 7840 722505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km W of Catania (314555 inhabitants)
24 Km W of Acireale (52622 inhabitants)
64 Km NW of Siracusa (122291 inhabitants)
71 Km N of Ragusa (73313 inhabitants)
74 Km NE of Vittoria (63339 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
77 Km N of Modica (54633 inhabitants)
79 Km NE of Gela (75827 inhabitants)
90 Km SW of Reggio di Calabria (183035 inhabitants)
92 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 2021-12-23
21:53:48		 37.5457 14.9082 8 2022-03-30
13:04:42		 Bollettino Sismico Italiano INGV 102527561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-23 21:53:48 ± 0.06
Latitude 37.5457 ± 0.0036
Longitude 14.9082 ± 0.0068
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102527561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 504
Semi-minor axis of confidence ellipse (meter) 392
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
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 56
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77252
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 23
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 102527561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-29 11:00:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-12-23T21:55:35.27 3.0 undecidable manual Pg 21.370001 0
IV.CPGN.EHZ. 2021-12-23T21:55:34.64 3.0 undecidable manual Pg 18.809999 0
IV.LRP.EHZ. 2021-12-23T21:55:33.99 3.0 undecidable manual Sn 3.22 0
IV.COR1.EHZ. 2021-12-23T21:55:29.12 3.0 undecidable manual Pg 17.51 0
IV.VITU.HHZ. 2021-12-23T21:55:20.38 3.0 undecidable manual Sn 4.15 0
IV.PAOL.HHZ. 2021-12-23T21:55:16.12 3.0 undecidable manual Sn 3.49 0
HL.VLS.HHZ. 2021-12-23T21:55:07.01 3.0 negative manual Pg 16.559999 0
IV.GIUL.HHZ. 2021-12-23T21:54:50.36 3.0 positive manual Pg 6.7 0
IV.LADO.EHZ. 2021-12-23T21:54:46.36 3.0 undecidable manual Sn -0.21 0
IV.MIDA.HHZ. 2021-12-23T21:54:43.76 3.0 undecidable manual Pn 1.46 0
IV.PAOL.HHZ. 2021-12-23T21:54:41.59 3.0 negative manual Pg 7.99 0
IX.RSF3.HHZ.02 2021-12-23T21:54:41.47 3.0 undecidable manual Pg 8.9 0
IV.VCRE.HHZ. 2021-12-23T21:54:39.70 3.0 undecidable manual Pg 8.83 0
IX.COL3.HHZ.02 2021-12-23T21:54:29.07 3.0 positive manual Pn 0.16 0
IV.CROCE.HHE. 2021-12-23T21:54:14.04 0.6 undecidable manual S 203 85.7475 50 -0.65 39
IV.ISPIC.EHZ. 2021-12-23T21:54:14.47 0.3 undecidable manual S 180 84.8484 50 0 68
IV.CAR1.HNZ. 2021-12-23T21:54:14.11 3.0 undecidable manual Pn 0.88 0
IV.IFIL.HHZ. 2021-12-23T21:54:10.91 3.0 undecidable manual S -2.02 0
IV.HVIT.HHZ. 2021-12-23T21:54:09.87 0.6 undecidable manual S 209 70.1742 50 -0.68 39
IV.HMDC.HHZ. 2021-12-23T21:54:09.08 0.6 undecidable manual S 190 65.9895 50 -0.35 44
IV.HSRS.HHZ. 2021-12-23T21:54:07.12 0.6 undecidable manual S 151 57.3981 50 0 48
IV.CROCE.HHE. 2021-12-23T21:54:04.56 0.3 undecidable manual P 203 85.7475 50 0.9 52
IV.ISPIC.EHZ. 2021-12-23T21:54:03.66 0.3 undecidable manual P 180 84.8484 50 0.12 67
IV.HVZN.HNZ. 2021-12-23T21:54:02.66 0.6 undecidable manual S 203 44.1225 50 -0.94 37
IV.HAGA.HHZ. 2021-12-23T21:54:01.33 0.6 undecidable manual S 143 36.1416 102 -0.12 49
IV.HVIT.HHZ. 2021-12-23T21:54:01.12 1.0 positive manual P 209 70.1742 50 -0.16 23
IV.HMDC.HHZ. 2021-12-23T21:54:00.80 0.3 undecidable manual P 190 65.9895 50 0.17 68
IV.GALF.HHZ. 2021-12-23T21:54:00.55 0.6 undecidable manual S 301 35.1426 102 -0.55 44
IV.RAFF.HHZ. 2021-12-23T21:54:00.19 0.1 undecidable manual P 233 59.9955 50 0.49 86
IV.HSRS.HHZ. 2021-12-23T21:53:59.33 0.3 undecidable manual P 151 57.3981 50 0.03 71
IV.EPZF.HHZ. 2021-12-23T21:53:59.88 0.6 undecidable manual S 352 31.2465 104 0.12 49
IV.EPOZ.HHZ. 2021-12-23T21:53:58.71 0.3 undecidable manual S 60 28.3494 105 -0.09 74
IT.LNT.HGZ. 2021-12-23T21:53:58.88 0.6 undecidable manual S 164 29.748 105 -0.38 46
IV.SSY.HHZ. 2021-12-23T21:53:57.59 0.1 undecidable manual P 161 45.4212 50 0.13 95
IV.ESCV.HHN. 2021-12-23T21:53:57.40 0.6 undecidable manual S 340 23.754 108 0.11 50
MN.VAE.HHZ. 2021-12-23T21:53:57.54 1.0 undecidable manual P 260 49.5171 50 -0.56 21
IV.HVZN.HNZ. 2021-12-23T21:53:57.59 0.3 undecidable manual P 203 44.1225 50 0.33 69
IV.HLNI.HHZ. 2021-12-23T21:53:56.74 0.3 undecidable manual S 188 22.0668 109 0.01 76
IV.GALF.HHZ. 2021-12-23T21:53:56.30 0.6 undecidable manual P 301 35.1426 102 0.48 45
IV.HAGA.HHZ. 2021-12-23T21:53:56.25 0.3 undecidable manual P 143 36.1416 102 0.23 71
IT.LNT.HGZ. 2021-12-23T21:53:55.11 0.3 undecidable manual P 164 29.748 105 0.35 70
IV.ESPC.HHN. 2021-12-23T21:53:55.22 0.6 undecidable manual S 33 19.3695 112 -0.63 44
IV.ESLN.HHZ. 2021-12-23T21:53:55.04 0.6 undecidable manual S 20 17.3715 114 -0.18 50
IV.EMFO.HHE. 2021-12-23T21:53:54.72 0.3 undecidable manual P 37 26.4513 106 0.59 66
IV.EPOZ.HHZ. 2021-12-23T21:53:54.54 0.1 undecidable manual P 60 28.3494 105 0.04 100
IV.EPZF.HHZ. 2021-12-23T21:53:54.89 0.3 undecidable manual P 352 31.2465 104 -0.16 73
IV.ESVO.HHE. 2021-12-23T21:53:54.41 0.3 undecidable manual P 8 25.4523 107 0.47 69
IV.ECHR.HHE. 2021-12-23T21:53:54.24 0.6 undecidable manual S 2 15.5733 116 -0.41 47
IV.ESCV.HHN. 2021-12-23T21:53:53.60 0.3 undecidable manual P 340 23.754 108 -0.02 76
IV.ESPC.HHN. 2021-12-23T21:53:52.42 0.3 undecidable manual P 33 19.3695 112 -0.37 71
IV.ESML.HHZ. 2021-12-23T21:53:52.85 0.6 undecidable manual S 343 8.3805 133 0.28 49
IV.ESLN.HHZ. 2021-12-23T21:53:52.16 0.3 undecidable manual P 20 17.3715 114 -0.27 73
IV.ECZM.HHN. 2021-12-23T21:53:52.94 0.3 undecidable manual P 359 20.5683 111 -0.08 75
IV.HLNI.HHZ. 2021-12-23T21:53:52.98 0.3 undecidable manual P 188 22.0668 109 -0.32 72
IV.ECHR.HHE. 2021-12-23T21:53:51.90 0.3 undecidable manual P 2 15.5733 116 -0.2 74
IV.ESML.HHZ. 2021-12-23T21:53:51.12 0.3 undecidable manual P 343 8.3805 133 0.22 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:1.2 0.0002415 0.6 AML other m 2021-12-23T21:53:53.08
IV.HLNI.HHN. ML:2.2 0.001085 1.86 AML other m 2021-12-23T21:53:56.05
IV.HLNI.HHE. ML:2.2 0.0012050000000000001 1.84 AML other m 2021-12-23T21:53:57.96
IV.ESML.HHN. ML:1.2 0.0002505 0.24 AML other m 2021-12-23T21:53:59.12
IV.EPOZ.HHN. ML:1.7 0.000242 0.42 AML other m 2021-12-23T21:53:59.06
IV.SSY.HHE. ML:2.2 0.0004805 0.88 AML other m 2021-12-23T21:54:00.64
IV.HAGA.HHN. ML:1.6 0.00016949999999999997 0.48 AML other m 2021-12-23T21:54:01.39
IV.HAGA.HHE. ML:1.8 0.0002415 0.86 AML other m 2021-12-23T21:54:01.39
IV.SSY.HHN. ML:2.5 0.000987 0.26 AML other m 2021-12-23T21:54:02.62
IV.SSY.HNE. ML:2.0 0.00029600000000000004 0.26 AML other m 2021-12-23T21:54:02.62
IV.SSY.HNN. ML:1.9 0.00023199999999999997 0.24 AML other m 2021-12-23T21:54:02.75
IV.EPOZ.HHE. ML:1.6 0.000235 0.6 AML other m 2021-12-23T21:54:03.07
IV.HVZN.HHE. ML:2.0 0.00030649999999999997 1.46 AML other m 2021-12-23T21:54:07.94
IV.HVZN.HHN. ML:2.0 0.000298 0.42 AML other m 2021-12-23T21:54:08.49
IV.HMDC.HHN. ML:2.0 0.000183 0.24 AML other m 2021-12-23T21:54:10.14
IV.HVIT.HHE. ML:1.7 0.00008955 1.56 AML other m 2021-12-23T21:54:10.80
IV.HMDC.HHE. ML:1.9 0.00015 1.06 AML other m 2021-12-23T21:54:10.29
IV.HVIT.HHN. ML:1.9 0.000124 0.38 AML other m 2021-12-23T21:54:10.76
IV.ISPIC.EHN. ML:2.1 0.0001525 0.22 AML other m 2021-12-23T21:54:14.84
IV.ISPIC.EHE. ML:2.1 0.000176 1.68 AML other m 2021-12-23T21:54:14.12
IV.MPNC.HHN. ML:1.5 0.0000484 0.22 AML other m 2021-12-23T21:54:17.53
IV.MPNC.HHE. ML:1.5 0.00004514999999999999 1.04 AML other m 2021-12-23T21:54:17.17
IV.IFIL.HHE. ML:2.3 0.000148 0.28 AML other m 2021-12-23T21:54:21.79
IV.MSRU.HHE. ML:1.9 0.0000775 0.88 AML other m 2021-12-23T21:54:24.35
IV.MSRU.HHN. ML:1.6 0.0000447 0.44 AML other m 2021-12-23T21:54:24.94
IV.IFIL.HHN. ML:1.9 0.00006110000000000001 0.92 AML other m 2021-12-23T21:54:29.55
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