Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 24-12-2021 and time 04:15:15 (Italy) in region 2 km NW Misterbianco (CT)

A magnitude ML 1.4 earthquake occured in region: 2 km NW Misterbianco (CT), on

  • 24-12-2021 03:15:15 (UTC)
  • 24-12-2021 04:15:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.5370, 14.9910 at 9 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
Misterbianco CT 2 49410 49410
Motta Sant'Anastasia CT 3 12116 61526
Camporotondo Etneo CT 4 5023 66549
San Pietro Clarenza CT 5 7743 74292
Belpasso CT 6 28108 102400
Gravina di Catania CT 7 25838 128238
Mascalucia CT 7 31958 160196
Sant'Agata li Battiati CT 8 9479 169675
Tremestieri Etneo CT 9 20589 190264
Paternò CT 9 48228 238492
Nicolosi CT 9 7463 245955
Catania CT 9 314555 560510
San Giovanni la Punta CT 10 23060 583570
San Gregorio di Catania CT 11 11966 595536
Pedara CT 11 14102 609638
Ragalna CT 11 3924 613562
Trecastagni CT 12 10910 624472
Aci Bonaccorsi CT 13 3524 627996
Viagrande CT 13 8563 636559
Santa Maria di Licodia CT 13 7641 644200
Valverde CT 13 7840 652040
Aci Castello CT 14 18723 670763
Aci Sant'Antonio CT 14 17984 688747
Aci Catena CT 15 29851 718598
Biancavilla CT 16 24007 742605
Acireale CT 18 52622 795227
Adrano CT 20 36122 831349

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km W of Catania (314555 inhabitants)
18 Km SW of Acireale (52622 inhabitants)
59 Km NW of Siracusa (122291 inhabitants)
72 Km NE of Ragusa (73313 inhabitants)
77 Km NE of Vittoria (63339 inhabitants)
78 Km N of Modica (54633 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
84 Km NE of Gela (75827 inhabitants)
86 Km SW of Reggio di Calabria (183035 inhabitants)
88 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
03:15:15		 37.5368 14.991 9 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 102003041
Reviewed
Rev200 		ML 1.2 2021-12-24
03:15:14		 37.554 15.02 11 2022-03-15
16:12:59		 Sala Operativa INGV_OE (Catania) 98885911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-24 03:15:15 ± 0.08
Latitude 37.5368 ± 0.0036
Longitude 14.9910 ± 0.0091
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102003041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 827
Semi-minor axis of confidence ellipse (meter) 286
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) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
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) 0.11961
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 102003041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-15 16:12:34

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 98885911
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-12-24 03:26:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HVIT.HHZ. 2021-12-24T03:15:38.05 0.6 undecidable manual S 215 73.2711 50 -0.04 46
IV.AIO.HHZ. 2021-12-24T03:15:32.29 0.6 undecidable manual S 24 52.6029 50 -0.3 45
IV.HVZN.HHZ. 2021-12-24T03:15:31.31 0.6 undecidable manual S 211 46.62 50 0.33 45
IV.EPZF.HHZ. 2021-12-24T03:15:28.87 0.6 undecidable manual S 340 33.9438 50 1.27 31
IV.HMDC.HNN. 2021-12-24T03:15:28.09 0.3 undecidable manual P 196 66.6777 50 0.5 63
IV.HAGA.HHZ. 2021-12-24T03:15:27.42 0.6 undecidable manual S 153 31.4463 50 0.48 45
IV.HVIT.HHZ. 2021-12-24T03:15:27.99 0.3 undecidable manual P 215 73.2711 50 -0.61 59
IT.LNT.HGZ. 2021-12-24T03:15:26.08 0.6 undecidable manual S 178 27.5502 108 0.35 46
IV.RAFF.HHZ. 2021-12-24T03:15:26.99 0.3 undecidable manual P 238 65.49 50 -0.42 64
IV.HVZN.HHZ. 2021-12-24T03:15:24.76 0.3 undecidable manual P 211 46.62 50 0.26 69
IV.GALF.HHZ. 2021-12-24T03:15:24.26 0.3 undecidable manual P 297 42.0246 50 0.47 66
IV.HLNI.HHZ. 2021-12-24T03:15:24.49 0.6 undecidable manual S 207 23.3544 111 0.14 49
IV.AIO.HHZ. 2021-12-24T03:15:24.80 0.3 undecidable manual P 24 52.6029 50 -0.63 61
IV.SSY.HHZ. 2021-12-24T03:15:23.78 0.1 negative manual P 170 42.7239 50 -0.12 95
IV.EMPL.HHZ. 2021-12-24T03:15:22.79 0.6 undecidable manual S 353 15.873 120 0.79 41
IV.EPZF.HHZ. 2021-12-24T03:15:22.35 0.3 undecidable manual P 340 33.9438 50 -0.2 71
IV.ESPC.HHN. 2021-12-24T03:15:22.37 0.6 undecidable manual S 10 17.5713 117 -0.14 49
IV.ESLN.HHZ. 2021-12-24T03:15:22.74 0.6 undecidable manual S 355 17.3715 118 0.27 48
IV.ESML.HHZ. 2021-12-24T03:15:21.52 0.6 undecidable manual S 313 13.2756 124 0.27 48
IV.EPOZ.HHZ. 2021-12-24T03:15:21.06 0.1 positive manual P 49 22.9548 112 0.47 91
IV.HAGA.HHZ. 2021-12-24T03:15:21.92 0.3 undecidable manual P 153 31.4463 50 -0.25 71
IT.LNT.HGZ. 2021-12-24T03:15:21.33 0.3 undecidable manual P 178 27.5502 108 -0.14 73
IV.ESCV.HHZ. 2021-12-24T03:15:21.31 0.1 negative manual P 327 27.9498 108 -0.23 95
IV.EVRN.HNN. 2021-12-24T03:15:20.39 0.6 undecidable manual P 37 21.1677 113 0.13 49
IV.HLNI.HHZ. 2021-12-24T03:15:20.52 0.1 undecidable manual P 207 23.3544 111 -0.16 97
IV.ECHR.HHE. 2021-12-24T03:15:19.47 0.1 undecidable manual P 338 17.9709 117 -0.21 97
IV.ESLN.HHZ. 2021-12-24T03:15:19.49 0.1 undecidable manual P 355 17.3715 118 -0.1 100
IV.EMPL.HHZ. 2021-12-24T03:15:19.40 0.1 negative manual P 353 15.873 120 0.09 100
IV.ESPC.HHN. 2021-12-24T03:15:19.29 0.1 undecidable manual P 10 17.5713 117 -0.32 95
IV.ESML.HHZ. 2021-12-24T03:15:18.66 0.1 negative manual P 313 13.2756 124 -0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHN. ML:1.5 0.000343 0.18 AML other m 2021-12-24T03:15:21.93
IV.ESML.HNN. ML:1.4 0.00028450000000000003 0.18 AML other m 2021-12-24T03:15:21.94
IV.ESML.HNE. ML:1.4 0.000252 1.1 AML other m 2021-12-24T03:15:22.59
IV.ESML.HHE. ML:1.4 0.00028149999999999996 0.12 AML other m 2021-12-24T03:15:22.59
IV.EMPL.HHN. ML:2.2 0.001365 0.3 AML other m 2021-12-24T03:15:23.22
IV.EMPL.HHE. ML:2.0 0.001042 0.2 AML other m 2021-12-24T03:15:24.32
IV.HLNI.HHN. ML:1.3 0.0001245 0.14 AML other m 2021-12-24T03:15:24.68
IV.HLNI.HHE. ML:1.2 0.00009470000000000001 0.12 AML other m 2021-12-24T03:15:24.68
IV.EPOZ.HHE. ML:1.2 0.00011649999999999999 0.52 AML other m 2021-12-24T03:15:27.40
IV.ESCV.HHN. ML:1.2 0.00008915000000000001 0.8 AML other m 2021-12-24T03:15:27.36
IV.EPOZ.HHN. ML:1.2 0.00011444999999999999 0.48 AML other m 2021-12-24T03:15:27.72
IV.ESCV.HHE. ML:1.2 0.00008635 0.72 AML other m 2021-12-24T03:15:30.55
IV.SSY.HHE. ML:1.7 0.0001625 0.92 AML other m 2021-12-24T03:15:32.47
IV.AIO.HHE. ML:1.3 0.00004635 0.52 AML other m 2021-12-24T03:15:32.41
IV.AIO.HHN. ML:1.2 0.00003545 1.1 AML other m 2021-12-24T03:15:34.05
IV.SSY.HHN. ML:2.1 0.00039749999999999996 0.18 AML other m 2021-12-24T03:15:34.71
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