Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 25-01-2021 and time 03:20:19 (Italy) in region 1 km S Giarre (CT)

A magnitude ML 2.2 earthquake occured in region: 1 km S Giarre (CT), on

  • 25-01-2021 02:20:19 (UTC)
  • 25-01-2021 03:20:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7180, 15.1900 at 19 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
Riposto CT 2 14838 42497
Mascali CT 5 14282 56779
Sant'Alfio CT 5 1582 58361
Santa Venerina CT 6 8592 66953
Milo CT 7 1087 68040
Zafferana Etnea CT 8 9517 77557
Fiumefreddo di Sicilia CT 9 9623 87180
Piedimonte Etneo CT 10 3963 91143
Acireale CT 12 52622 143765
Calatabiano CT 12 5308 149073
Aci Catena CT 13 29851 178924
Aci Sant'Antonio CT 14 17984 196908
Linguaglossa CT 14 5403 202311
Viagrande CT 14 8563 210874
Trecastagni CT 15 10910 221784
Aci Bonaccorsi CT 15 3524 225308
Giardini-Naxos ME 16 9415 234723
Pedara CT 16 14102 248825
Gaggi ME 16 3184 252009
Valverde CT 16 7840 259849
Taormina ME 17 10960 270809
Castelmola ME 17 1088 271897
San Giovanni la Punta CT 18 23060 294957
Nicolosi CT 18 7463 302420
San Gregorio di Catania CT 18 11966 314386
Aci Castello CT 18 18723 333109
Tremestieri Etneo CT 19 20589 353698
Castiglione di Sicilia CT 19 3215 356913
Graniti ME 20 1492 358405
Motta Camastra ME 20 845 359250
Mascalucia CT 20 31958 391208

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
26 Km NE of Catania (314555 inhabitants)
59 Km SW of Reggio di Calabria (183035 inhabitants)
62 Km SW of Messina (238439 inhabitants)
74 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 2.2 2021-01-25
02:20:19		 37.7185 15.1898 19 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 87779301
Reviewed
Rev200 		ML 1.8 2021-01-25
02:20:20		 37.75 15.16 11 2021-03-05
14:06:44		 Sala Operativa INGV_OE (Catania) 86549661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-25 02:20:19 ± 0.19
Latitude 37.7185 ± 0.0090
Longitude 15.1898 ± 0.0182
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87779301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1656
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 293
Circular confidence region, given by single value of horizontal uncertainty (meter) 1660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.75993
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 87779301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-05 14:06:18

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86549661
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-25 04:05:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-01-25T02:20:34.18 0.3 undecidable manual P 184 84.3489 96 -0.2 65
IV.AIO.HHZ. 2021-01-25T02:20:30.38 0.6 undecidable manual S 8 28.2495 114 0.02 48
IV.HLNI.HHZ. 2021-01-25T02:20:28.49 0.3 undecidable manual P 214 49.7169 102 -0.6 63
IV.EPZF.HHZ. 2021-01-25T02:20:27.41 0.6 undecidable manual P 292 31.4463 111 1.02 35
IV.ENIC.HHZ. 2021-01-25T02:20:27.80 0.3 undecidable manual S 237 17.6712 129 -0.12 74
IV.AIO.HHZ. 2021-01-25T02:20:26.01 0.3 undecidable manual P 8 28.2495 114 0.08 74
IV.NOV.HHZ. 2021-01-25T02:20:26.94 0.3 undecidable manual P 352 34.6431 109 0.09 72
IV.EPOZ.HNZ. 2021-01-25T02:20:26.36 0.6 undecidable manual S 181 5.1948 162 0.37 48
IV.EVRN.HHZ. 2021-01-25T02:20:26.04 0.3 undecidable manual S 236 5.7942 160 0 76
IV.ESML.HNE. 2021-01-25T02:20:26.46 0.6 undecidable manual P 248 29.4483 113 0.36 45
IV.ESAL.HHZ. 2021-01-25T02:20:25.76 0.6 undecidable manual S 310 6.2937 158 -0.34 47
IV.EMNR.HHZ. 2021-01-25T02:20:25.33 0.3 undecidable manual P 307 18.0708 128 0.75 62
IV.ECTS.HHZ. 2021-01-25T02:20:24.37 0.3 undecidable manual P 342 19.0698 126 -0.34 69
IV.EPIT.HHZ. 2021-01-25T02:20:24.20 0.3 undecidable manual P 311 15.5733 133 -0.09 74
IV.ENIC.HHZ. 2021-01-25T02:20:24.81 0.3 undecidable manual P 237 17.6712 129 0.28 71
IV.EVRN.HHZ. 2021-01-25T02:20:23.34 0.1 undecidable manual P 236 5.7942 160 -0.11 100
IV.EFIU.HHZ. 2021-01-25T02:20:23.36 0.3 undecidable manual P 13 8.0808 153 -0.23 72
IV.ESAL.HHZ. 2021-01-25T02:20:23.20 0.3 undecidable manual P 310 6.2937 158 -0.28 72
IV.EPOZ.HNZ. 2021-01-25T02:20:23.57 0.3 undecidable manual P 181 5.1948 162 0.15 75
IV.EMFO.HHZ. 2021-01-25T02:20:23.45 0.6 undecidable manual P 282 8.9799 150 -0.2 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HHN. ML:2.4 0.0021981525 0.16 AML other m 2021-01-25T02:20:26.39
IV.EVRN.HNN. ML:2.5 0.0027853315 0.1696 AML other m 2021-01-25T02:20:26.40
IV.EVRN.HNE. ML:2.5 0.002749385 0.1904 AML other m 2021-01-25T02:20:26.44
IV.EVRN.HHE. ML:2.6 0.0032206124999999996 0.2208 AML other m 2021-01-25T02:20:26.44
IV.AIO.HHN. ML:1.4 0.00012504959999999998 0.2 AML other m 2021-01-25T02:20:31.65
IV.AIO.HHE. ML:1.5 0.00015210895 0.2592 AML other m 2021-01-25T02:20:32.24
IV.ENIC.HHE. ML:2.1 0.0008182252 0.2 AML other m 2021-01-25T02:20:33.46
IV.ENIC.HNE. ML:2.2 0.0009353855 0.2096 AML other m 2021-01-25T02:20:33.37
IV.ENIC.HHN. ML:2.0 0.00063684075 0.24 AML other m 2021-01-25T02:20:33.67
IV.HLNI.HHN. ML:1.2 0.000033492915 0.12 AML other m 2021-01-25T02:20:38.77
IV.HAVL.HHE. ML:2.1 0.00016612137999999998 0.2208 AML other m 2021-01-25T02:20:52.67
IV.HAVL.HHN. ML:2.2 0.000196575785 1.7008 AML other m 2021-01-25T02:20:52.05
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