Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 26-01-2021 and time 01:21:20 (Italy) in region 3 km E Milo (CT)

A magnitude ML 1.8 earthquake occured in region: 3 km E Milo (CT), on

  • 26-01-2021 00:21:20 (UTC)
  • 26-01-2021 01:21:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7190, 15.1440 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
Milo CT 3 1087 1087
Sant'Alfio CT 3 1582 2669
Santa Venerina CT 4 8592 11261
Giarre CT 4 27659 38920
Zafferana Etnea CT 4 9517 48437
Riposto CT 6 14838 63275
Mascali CT 6 14282 77557
Fiumefreddo di Sicilia CT 10 9623 87180
Piedimonte Etneo CT 10 3963 91143
Acireale CT 12 52622 143765
Aci Sant'Antonio CT 13 17984 161749
Trecastagni CT 13 10910 172659
Viagrande CT 13 8563 181222
Aci Catena CT 13 29851 211073
Pedara CT 13 14102 225175
Linguaglossa CT 14 5403 230578
Aci Bonaccorsi CT 14 3524 234102
Calatabiano CT 14 5308 239410
Nicolosi CT 16 7463 246873
Valverde CT 16 7840 254713
San Giovanni la Punta CT 16 23060 277773
Tremestieri Etneo CT 17 20589 298362
San Gregorio di Catania CT 17 11966 310328
Gaggi ME 17 3184 313512
Mascalucia CT 18 31958 345470
Aci Castello CT 18 18723 364193
Giardini-Naxos ME 18 9415 373608
Castiglione di Sicilia CT 18 3215 376823
Sant'Agata li Battiati CT 19 9479 386302
Gravina di Catania CT 19 25838 412140
Taormina ME 19 10960 423100
San Pietro Clarenza CT 19 7743 430843
Castelmola ME 20 1088 431931
Motta Camastra ME 20 845 432776

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
24 Km N of Catania (314555 inhabitants)
62 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
95 Km NE of Ragusa (73313 inhabitants)
99 Km E of Caltanissetta (63360 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 1.8 2021-01-26
00:21:20		 37.719 15.1445 18 2021-07-12
16:54:58		 Bollettino Sismico Italiano INGV 87073901
Reviewed
Rev200 		ML 1.8 2021-01-26
00:21:19		 37.762 15.107 18 2021-03-05
13:20:16		 Sala Operativa INGV_OE (Catania) 86581351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-26 00:21:20 ± 0.12
Latitude 37.7190 ± 0.0045
Longitude 15.1445 ± 0.0114
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 87073901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1027
Semi-minor axis of confidence ellipse (meter) 260
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.56387
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:1.8

Field Value
Value 1.8
Uncertainty 0.5
Num. used stations 14
Type of magnitude ML
Reference to an origin 87073901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-05 13:20:01

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86581351
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-26 01:00:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2021-01-26T00:21:36.09 0.3 undecidable manual S 210 47.619 100 0.36 64
IV.HAGA.HHZ. 2021-01-26T00:21:36.45 0.3 undecidable manual S 179 48.1185 100 0.57 61
IV.NOV.HHZ. 2021-01-26T00:21:32.74 0.3 undecidable manual S 359 34.2435 106 0.47 65
IV.SSY.HHZ. 2021-01-26T00:21:31.83 0.6 undecidable manual P 186 62.5929 97 0.28 42
IV.AIO.HHZ. 2021-01-26T00:21:31.21 0.6 undecidable manual S 15 29.0487 110 0.27 46
IV.HCRL.HHZ. 2021-01-26T00:21:29.34 0.3 undecidable manual P 192 49.3173 100 -0.19 68
IV.HAGA.HHZ. 2021-01-26T00:21:29.07 0.6 undecidable manual P 179 48.1185 100 -0.28 44
IV.ECTS.HHZ. 2021-01-26T00:21:28.44 0.6 undecidable manual S 354 18.1707 125 0.08 48
IV.HLNI.HHZ. 2021-01-26T00:21:28.92 0.1 undecidable manual P 210 47.619 100 -0.34 88
IV.NOV.HHZ. 2021-01-26T00:21:27.35 0.3 undecidable manual P 359 34.2435 106 0.09 70
IV.EFIU.HHE. 2021-01-26T00:21:26.82 0.6 undecidable manual S 36 9.6792 146 0.06 50
IV.AIO.HHZ. 2021-01-26T00:21:26.43 0.1 negative manual P 15 29.0487 110 -0.07 96
IV.ESPC.HHZ. 2021-01-26T00:21:26.79 0.6 undecidable manual S 254 10.6782 143 -0.12 49
IV.EVRN.HHZ. 2021-01-26T00:21:26.62 0.6 undecidable manual S 193 3.3966 167 0.55 45
IV.ESAL.HHE. 2021-01-26T00:21:26.53 0.3 undecidable manual S 348 4.0959 164 0.41 70
IV.EPOZ.HHZ. 2021-01-26T00:21:25.64 0.6 undecidable manual S 143 6.4935 156 -0.7 41
IV.EPIT.HHZ. 2021-01-26T00:21:24.58 0.3 undecidable manual P 323 12.7761 137 0.2 71
IV.EPOZ.HHZ. 2021-01-26T00:21:24.01 0.1 undecidable manual P 143 6.4935 156 0.17 97
IV.ECTS.HHZ. 2021-01-26T00:21:24.61 0.1 undecidable manual P 354 18.1707 125 -0.4 91
IV.ESAL.HHE. 2021-01-26T00:21:23.56 0.1 undecidable manual P 348 4.0959 164 -0.15 98
IV.EFIU.HHE. 2021-01-26T00:21:23.75 0.1 undecidable manual P 36 9.6792 146 -0.33 93
IV.EMFO.HHZ. 2021-01-26T00:21:23.73 0.3 undecidable manual P 291 5.0949 161 -0.03 75
IV.ESPC.HHZ. 2021-01-26T00:21:23.92 0.1 undecidable manual P 254 10.6782 143 -0.25 95
IV.EVRN.HHZ. 2021-01-26T00:21:23.65 0.1 undecidable manual P 193 3.3966 167 -0.03 100
IV.ECBD.HHZ. 2021-01-26T00:21:23.98 0.3 undecidable manual P 323 8.4804 149 0 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HNN. ML:2.4 0.0026 0.16 AML other m 2021-01-26T00:21:26.70
IV.EVRN.HHN. ML:2.3 0.00209 0.12 AML other m 2021-01-26T00:21:26.70
IV.EVRN.HHE. ML:2.5 0.0029127239999999998 0.22 AML other m 2021-01-26T00:21:26.82
IV.EVRN.HNE. ML:2.4 0.0023231995 0.18 AML other m 2021-01-26T00:21:26.82
IV.AIO.HHE. ML:1.3 0.000081375035 0.18 AML other m 2021-01-26T00:21:31.89
IV.NOV.HHE. ML:2.0 0.0003546277 0.44 AML other m 2021-01-26T00:21:33.06
IV.NOV.HHN. ML:1.8 0.00025345884000000003 0.5 AML other m 2021-01-26T00:21:35.11
IV.AIO.HHN. ML:1.3 0.000089485045 0.3 AML other m 2021-01-26T00:21:36.03
IV.HLNI.HHE. ML:1.1 0.000035693815 0.1 AML other m 2021-01-26T00:21:39.43
IV.HCRL.HHN. ML:1.2 0.000046734035 0.12 AML other m 2021-01-26T00:21:40.84
IV.SSY.HHE. ML:1.9 0.00016121215 0.1 AML other m 2021-01-26T00:21:42.45
IV.HAGA.HHN. ML:1.2 0.000039432795 0.26 AML other m 2021-01-26T00:21:42.72
IV.HCRL.HHE. ML:1.4 0.000058035025000000004 0.14 AML other m 2021-01-26T00:21:42.78
IV.SSY.HHN. ML:2.2 0.00027549755 0.16 AML other m 2021-01-26T00:21:46.52
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