Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 24-01-2021 and time 10:26:05 (Italy) in region 2 km W Giarre (CT)

A magnitude ML 2.3 earthquake occured in region: 2 km W Giarre (CT), on

  • 24-01-2021 09:26:05 (UTC)
  • 24-01-2021 10:26:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7250, 15.1610 at 20 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
Giarre CT 2 27659 27659
Sant'Alfio CT 3 1582 29241
Milo CT 4 1087 30328
Riposto CT 4 14838 45166
Santa Venerina CT 5 8592 53758
Mascali CT 5 14282 68040
Zafferana Etnea CT 6 9517 77557
Fiumefreddo di Sicilia CT 9 9623 87180
Piedimonte Etneo CT 9 3963 91143
Calatabiano CT 13 5308 96451
Acireale CT 13 52622 149073
Linguaglossa CT 13 5403 154476
Aci Sant'Antonio CT 14 17984 172460
Aci Catena CT 14 29851 202311
Viagrande CT 14 8563 210874
Trecastagni CT 14 10910 221784
Pedara CT 15 14102 235886
Aci Bonaccorsi CT 15 3524 239410
Gaggi ME 16 3184 242594
Valverde CT 16 7840 250434
Giardini-Naxos ME 17 9415 259849
Nicolosi CT 17 7463 267312
San Giovanni la Punta CT 17 23060 290372
Taormina ME 18 10960 301332
Castiglione di Sicilia CT 18 3215 304547
Castelmola ME 18 1088 305635
Tremestieri Etneo CT 18 20589 326224
San Gregorio di Catania CT 18 11966 338190
Aci Castello CT 19 18723 356913
Motta Camastra ME 19 845 357758
Mascalucia CT 19 31958 389716
Graniti ME 20 1492 391208
Sant'Agata li Battiati CT 20 9479 400687
Francavilla di Sicilia ME 20 3945 404632

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km N of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
75 Km N of Siracusa (122291 inhabitants)
97 Km NE of Ragusa (73313 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 2.3 2021-01-24
09:26:05		 37.7253 15.1612 20 2021-07-12
16:55:09		 Bollettino Sismico Italiano INGV 89799681
Reviewed
Rev200 		ML 2.0 2021-01-24
09:26:05		 37.737 15.1 14 2021-05-05
14:07:03		 Sala Operativa INGV_OE (Catania) 86524571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 09:26:05 ± 0.18
Latitude 37.7253 ± 0.0063
Longitude 15.1612 ± 0.0159
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89799681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1329
Semi-minor axis of confidence ellipse (meter) 692
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 1330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76622
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 89799681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-05 14:06:43

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86524571
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-24 09:38:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BULG.HHZ. 2021-01-24T09:27:12.49 3.0 undecidable manual Sn -0.99 0
IV.GIZZ.HHZ. 2021-01-24T09:26:54.58 3.0 undecidable manual S 0.36 0
IV.HAVL.HHZ. 2021-01-24T09:26:31.67 0.6 undecidable manual S 182 85.0482 97 1.13 30
IV.HLNI.HHZ. 2021-01-24T09:26:20.77 0.6 undecidable manual S 211 48.9177 104 -0.29 44
IV.HAVL.HHZ. 2021-01-24T09:26:19.94 0.3 undecidable manual P 182 85.0482 97 0.09 64
IV.SSY.HHZ. 2021-01-24T09:26:16.81 0.3 undecidable manual P 187 63.492 100 0.25 65
IV.EPIT.HHN. 2021-01-24T09:26:13.22 0.6 undecidable manual S 316 13.1757 142 0.52 44
IV.HLNI.HHZ. 2021-01-24T09:26:13.95 0.3 undecidable manual P 211 48.9177 104 -0.43 64
IV.ECTS.HHZ. 2021-01-24T09:26:13.22 0.6 undecidable manual S 349 17.7711 132 -0.31 46
IV.EMNR.HHZ. 2021-01-24T09:26:13.97 0.6 undecidable manual S 311 15.5733 136 0.85 38
IV.ENIC.HHE. 2021-01-24T09:26:13.20 0.6 undecidable manual S 230 16.0728 135 -0.01 49
IV.EPOZ.HHZ. 2021-01-24T09:26:12.61 0.6 undecidable manual S 158 6.3936 160 0.81 41
IV.EFIU.HHE. 2021-01-24T09:26:12.01 0.6 undecidable manual S 31 8.2806 154 0.01 49
IV.ESPC.HHN. 2021-01-24T09:26:11.75 0.6 undecidable manual S 253 12.2766 144 -0.8 40
IV.ESAL.HHE. 2021-01-24T09:26:11.65 0.6 undecidable manual S 325 3.996 167 0.03 50
IV.EVRN.HHZ. 2021-01-24T09:26:11.56 0.3 undecidable manual S 209 4.5954 165 -0.1 73
IV.AIO.HHZ. 2021-01-24T09:26:11.53 0.1 undecidable manual P 13 27.9498 117 0.2 93
IV.EMNR.HHZ. 2021-01-24T09:26:10.08 0.3 undecidable manual P 311 15.5733 136 0.29 69
IV.ENIC.HHE. 2021-01-24T09:26:10.10 0.6 undecidable manual P 230 16.0728 135 0.26 47
IV.ECTS.HHZ. 2021-01-24T09:26:09.82 0.1 undecidable manual P 349 17.7711 132 -0.2 94
IV.EPOZ.HHZ. 2021-01-24T09:26:09.07 0.1 undecidable manual P 158 6.3936 160 0.04 100
IV.EPIT.HHN. 2021-01-24T09:26:09.69 0.1 undecidable manual P 316 13.1757 142 0.14 96
IV.ESPC.HHN. 2021-01-24T09:26:09.01 0.1 undecidable manual P 253 12.2766 144 -0.45 91
IV.ECBD.HHN. 2021-01-24T09:26:09.25 0.1 undecidable manual P 313 8.9799 152 0.06 99
IV.EMCN.HHN. 2021-01-24T09:26:09.67 0.3 undecidable manual P 303 13.3755 141 0.11 72
IV.EMFO.HHE. 2021-01-24T09:26:08.90 0.3 undecidable manual P 280 6.2937 160 -0.13 73
IV.ESAL.HHE. 2021-01-24T09:26:08.72 0.1 undecidable manual P 325 3.996 167 -0.2 96
IV.EVRN.HHZ. 2021-01-24T09:26:08.73 0.1 undecidable manual P 209 4.5954 165 -0.21 96
IV.EFIU.HHE. 2021-01-24T09:26:08.87 0.1 undecidable manual P 31 8.2806 154 -0.27 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HHN. ML:2.8 0.005849999999999999 0.16 AML other m 2021-01-24T09:26:11.71
IV.EVRN.HNN. ML:2.9 0.007445 0.18 AML other m 2021-01-24T09:26:11.80
IV.EVRN.HHE. ML:2.9 0.006825 1.2 AML other m 2021-01-24T09:26:11.83
IV.EVRN.HNE. ML:2.8 0.005665 1.24 AML other m 2021-01-24T09:26:11.84
IV.EPOZ.HHE. ML:2.2 0.0012000000000000001 0.82 AML other m 2021-01-24T09:26:13.20
IV.ECTS.HHE. ML:2.2 0.0010350000000000001 1.24 AML other m 2021-01-24T09:26:14.87
IV.ECTS.HHN. ML:2.1 0.000766 0.34 AML other m 2021-01-24T09:26:14.34
IV.EPOZ.HHN. ML:2.3 0.00163 0.32 AML other m 2021-01-24T09:26:14.23
IV.AIO.HHE. ML:1.8 0.000294 0.2 AML other m 2021-01-24T09:26:17.38
IV.AIO.HHN. ML:1.9 0.000379 0.98 AML other m 2021-01-24T09:26:18.94
IV.HAVL.HHN. ML:2.4 0.0003285 0.64 AML other m 2021-01-24T09:26:31.53
IV.HAVL.HHE. ML:2.2 0.00020896840500000003 0.32 AML other m 2021-01-24T09:26:32.85
IV.HLNI.HHN. ML:1.1 0.00003003874 0.2368 AML other m 2021-01-24T09:26:21.19
IV.SSY.HHE. ML:2.2 0.00025984010000000004 0.3584 AML other m 2021-01-24T09:26:29.08
IV.SSY.HHN. ML:2.4 0.0004395110825 0.1792 AML other m 2021-01-24T09:26:33.33
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