Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 01-01-2021 and time 00:17:01 (UTC) in region 4 km NE Ragalna (CT)

A magnitude ML 2.2 earthquake occured in region: 4 km NE Ragalna (CT), on

  • 01-01-2021 00:17:01 (UTC)
  • 01-01-2021 01:17:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6620, 14.9560 at 18 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
Ragalna CT 4 3924 3924
Santa Maria di Licodia CT 8 7641 11565
Biancavilla CT 8 24007 35572
Belpasso CT 8 28108 63680
Nicolosi CT 8 7463 71143
Pedara CT 10 14102 85245
Paternò CT 11 48228 133473
Adrano CT 11 36122 169595
Camporotondo Etneo CT 11 5023 174618
San Pietro Clarenza CT 12 7743 182361
Trecastagni CT 12 10910 193271
Mascalucia CT 13 31958 225229
Zafferana Etnea CT 14 9517 234746
Viagrande CT 14 8563 243309
Tremestieri Etneo CT 14 20589 263898
Gravina di Catania CT 15 25838 289736
Aci Bonaccorsi CT 15 3524 293260
San Giovanni la Punta CT 15 23060 316320
Milo CT 16 1087 317407
Sant'Agata li Battiati CT 16 9479 326886
Aci Sant'Antonio CT 16 17984 344870
Misterbianco CT 16 49410 394280
Santa Venerina CT 16 8592 402872
Motta Sant'Anastasia CT 17 12116 414988
San Gregorio di Catania CT 17 11966 426954
Valverde CT 18 7840 434794
Aci Catena CT 18 29851 464645
Bronte CT 18 19172 483817
Sant'Alfio CT 19 1582 485399
Acireale CT 19 52622 538021
Centuripe EN 19 5470 543491

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Acireale (52622 inhabitants)
21 Km NW of Catania (314555 inhabitants)
73 Km NW of Siracusa (122291 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km SW of Messina (238439 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
87 Km NE of Vittoria (63339 inhabitants)
91 Km N of Modica (54633 inhabitants)
91 Km NE of Gela (75827 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 2.2 2021-01-01
00:17:01		 37.6625 14.9562 18 2021-07-12
16:54:56		 Bollettino Sismico Italiano INGV 86354971
Reviewed
Rev200 		ML 1.7 2021-01-01
00:17:01		 37.685 14.955 10 2021-02-04
16:33:06		 Sala Operativa INGV_OE (Catania) 85927611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-01 00:17:01 ± 0.11
Latitude 37.6625 ± 0.0045
Longitude 14.9562 ± 0.0102
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86354971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 713
Semi-minor axis of confidence ellipse (meter) 570
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
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) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85927611
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-01 00:26:16

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 86354971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 08:54:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2021-01-01T00:17:17.01 0.3 undecidable manual S 157 45.4212 101 0.63 60
IV.HCRL.HHZ. 2021-01-01T00:17:16.27 0.6 undecidable manual S 171 42.624 102 0.61 41
IV.HAVL.HHZ. 2021-01-01T00:17:15.22 0.1 positive manual P 169 79.365 96 -0.11 87
IV.HLNI.HHZ. 2021-01-01T00:17:14.31 0.6 undecidable manual S 192 35.6421 106 0.47 43
IV.RAFF.HHZ. 2021-01-01T00:17:14.15 0.3 undecidable manual P 227 71.5728 96 0.02 67
IV.MPNC.HHN. 2021-01-01T00:17:12.94 0.3 undecidable manual P 33 63.8916 97 -0.03 68
IV.MSFR.HHZ. 2021-01-01T00:17:11.35 0.6 undecidable manual P 322 52.1034 100 0.18 45
IV.SSY.HHZ. 2021-01-01T00:17:11.90 0.1 undecidable manual P 169 56.8986 99 0 92
IV.EPZF.HHZ. 2021-01-01T00:17:10.54 0.6 undecidable manual S 334 19.9689 122 0.55 43
IV.EMSG.HHZ. 2021-01-01T00:17:10.29 0.3 undecidable manual S 358 17.5713 127 0.82 59
IV.MUCR.HHE. 2021-01-01T00:17:09.83 0.1 undecidable manual P 350 42.8238 102 0.07 93
IV.AIO.HHZ. 2021-01-01T00:17:09.73 0.1 negative manual P 35 41.9247 103 0.1 93
IV.HAGA.HHZ. 2021-01-01T00:17:09.59 0.3 undecidable manual P 157 45.4212 101 -0.56 62
IV.GALF.HHZ. 2021-01-01T00:17:09.26 0.3 undecidable manual P 279 34.6431 106 0.72 59
IV.HCRL.HHZ. 2021-01-01T00:17:09.55 0.1 undecidable manual P 171 42.624 102 -0.18 91
IV.ENIC.HNZ. 2021-01-01T00:17:08.09 0.6 undecidable manual S 121 6.6933 156 0.47 46
IV.EMCN.HHZ. 2021-01-01T00:17:08.74 0.6 undecidable manual S 25 15.7731 130 -0.36 46
IV.HLNI.HHZ. 2021-01-01T00:17:08.23 0.1 undecidable manual P 192 35.6421 106 -0.45 87
IV.ECTS.HHZ. 2021-01-01T00:17:07.09 0.6 undecidable manual P 31 28.3494 111 -0.52 43
IV.EFIU.HHE. 2021-01-01T00:17:07.16 0.3 undecidable manual P 58 26.3514 113 -0.18 70
IV.ESML.HHZ. 2021-01-01T00:17:07.84 0.3 undecidable manual S 234 8.3805 150 0.02 75
IV.ESLN.HHZ. 2021-01-01T00:17:07.14 0.3 undecidable manual S 25 3.7962 166 -0.22 72
IV.ECHR.HHE. 2021-01-01T00:17:07.58 0.6 undecidable manual S 305 4.5954 163 0.16 49
IV.EPZF.HHZ. 2021-01-01T00:17:06.37 0.1 undecidable manual P 334 19.9689 122 -0.09 97
IV.EMSG.HHZ. 2021-01-01T00:17:06.15 0.1 negative manual P 358 17.5713 127 -0.01 99
IV.EPOZ.HHZ. 2021-01-01T00:17:06.97 0.3 undecidable manual P 87 20.4684 121 0.45 67
IV.EVRN.HNN. 2021-01-01T00:17:06.30 0.3 undecidable manual P 79 16.0728 130 0.33 70
IV.EMCN.HHZ. 2021-01-01T00:17:05.71 0.3 undecidable manual P 25 15.7731 130 -0.23 71
IV.ENIC.HNZ. 2021-01-01T00:17:05.05 0.1 positive manual P 121 6.6933 156 -0.04 100
IV.ESLN.HHZ. 2021-01-01T00:17:04.67 0.1 negative manual P 25 3.7962 166 -0.27 96
IV.ECHR.HHE. 2021-01-01T00:17:04.57 0.1 negative manual P 305 4.5954 163 -0.4 93
IV.ESML.HHZ. 2021-01-01T00:17:04.72 0.1 negative manual P 234 8.3805 150 -0.48 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.2 0.0016400000000000002 0.18 AML other m 2021-01-01T00:17:07.29
IV.ESLN.HHE. ML:2.5 0.002815 0.3 AML other m 2021-01-01T00:17:07.25
IV.EMCN.HHE. ML:2.5 0.0021171604999999996 0.56 AML other m 2021-01-01T00:17:09.72
IV.EMCN.HNE. ML:2.5 0.002194922 0.56 AML other m 2021-01-01T00:17:09.72
IV.ENIC.HHE. ML:2.5 0.002845 0.18 AML other m 2021-01-01T00:17:09.75
IV.ENIC.HNE. ML:2.4 0.002414485 0.18 AML other m 2021-01-01T00:17:09.75
IV.ENIC.HHN. ML:2.4 0.002515 0.2 AML other m 2021-01-01T00:17:09.74
IV.ENIC.HNN. ML:2.5 0.0027149865 0.24 AML other m 2021-01-01T00:17:09.75
IV.ESML.HHE. ML:1.9 0.00067549255 0.36 AML other m 2021-01-01T00:17:10.43
IV.EMSG.HHN. ML:2.1 0.0009230335 0.58 AML other m 2021-01-01T00:17:11.11
IV.EPZF.HHE. ML:2.1 0.0008165 0.26 AML other m 2021-01-01T00:17:11.40
IV.EPZF.HHN. ML:2.2 0.0009105 0.34 AML other m 2021-01-01T00:17:12.28
IV.ESML.HHN. ML:1.9 0.0007436339 0.52 AML other m 2021-01-01T00:17:12.60
IV.HLNI.HHE. ML:2.0 0.0003375 1.78 AML other m 2021-01-01T00:17:14.04
IV.EMSG.HHE. ML:2.1 0.0008119792 0.4 AML other m 2021-01-01T00:17:15.65
IV.HLNI.HHN. ML:1.8 0.0002335 0.1 AML other m 2021-01-01T00:17:16.19
IV.HCRL.HHE. ML:2.1 0.00035901440000000003 0.16 AML other m 2021-01-01T00:17:17.20
IV.GALF.HNE. ML:1.6 0.0001329865 0.47 AML other m 2021-01-01T00:17:18.22
IV.HCRL.HHN. ML:2.0 0.00029575289999999996 0.16 AML other m 2021-01-01T00:17:18.29
IV.GALF.HNN. ML:1.6 0.0001596976 0.79 AML other m 2021-01-01T00:17:19.72
IV.HAVL.HHE. ML:2.5 0.00039349780000000003 0.16 AML other m 2021-01-01T00:17:27.30
IV.HAVL.HHN. ML:2.5 0.0004485228 0.1 AML other m 2021-01-01T00:17:27.44
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