Earthquake with magnitude of ML 2.0 on date 24-01-2021 and time 09:51:38 (Italy) in region 1 km SW Sant'Alfio (CT)

A magnitude ML 2.0 earthquake occured in region: 1 km SW Sant'Alfio (CT), on

  • 24-01-2021 08:51:38 (UTC)
  • 24-01-2021 09:51:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.74, 15.132 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Alfio CT 1 1582 1582
Milo CT 2 1087 2669
Giarre CT 5 27659 30328
Zafferana Etnea CT 6 9517 39845
Santa Venerina CT 6 8592 48437
Mascali CT 6 14282 62719
Riposto CT 6 14838 77557
Piedimonte Etneo CT 9 3963 81520
Fiumefreddo di Sicilia CT 9 9623 91143
Linguaglossa CT 11 5403 96546
Calatabiano CT 13 5308 101854
Trecastagni CT 14 10910 112764
Acireale CT 14 52622 165386
Viagrande CT 15 8563 173949
Aci Sant'Antonio CT 15 17984 191933
Pedara CT 15 14102 206035
Aci Catena CT 15 29851 235886
Gaggi ME 16 3184 239070
Aci Bonaccorsi CT 16 3524 242594
Castiglione di Sicilia CT 16 3215 245809
Nicolosi CT 17 7463 253272
Giardini-Naxos ME 17 9415 262687
Valverde CT 18 7840 270527
Motta Camastra ME 18 845 271372
Francavilla di Sicilia ME 18 3945 275317
San Giovanni la Punta CT 18 23060 298377
Taormina ME 18 10960 309337
Castelmola ME 19 1088 310425
Tremestieri Etneo CT 19 20589 331014
Graniti ME 19 1492 332506
Moio Alcantara ME 19 717 333223
San Gregorio di Catania CT 19 11966 345189
Mascalucia CT 20 31958 377147

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km N of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
77 Km N of Siracusa (122291 inhabitants)
97 Km NE of Ragusa (73313 inhabitants)
98 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 2.0 2021-01-24
08:51:38
37.7397 15.1317 19 2021-07-12
16:55:09
Bollettino Sismico Italiano INGV 89798591
Reviewed
Rev200
ML 1.7 2021-01-24
08:51:38
37.763 15.067 15 2021-05-05
13:34:08
Sala Operativa INGV_OE (Catania) 86524051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 08:51:38 ± 0.16
Latitude 37.7397 ± 0.0063
Longitude 15.1317 ± 0.0239
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 89798591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2080
Semi-minor axis of confidence ellipse (meter) 374
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 2080
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.58366
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.5
Num. used stations 9
Type of magnitude ML
Reference to an origin 89798591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-05 13:33:45

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 86524051
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-24 09:24:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2021-01-24T08:53:01.16 3.0 undecidable manual Pn -1.96 0
IV.MTMR.EHZ. 2021-01-24T08:52:55.88 3.0 undecidable manual Sn -6.95 0
IV.PIPA.HHZ. 2021-01-24T08:52:44.54 3.0 undecidable manual Sn 1.5 0
IV.PTRJ.HHZ. 2021-01-24T08:52:34.01 3.0 undecidable manual Pn 5.7 0
IV.GIZZ.HHZ. 2021-01-24T08:52:00.27 3.0 positive manual Pn -1.58 0
IV.SSY.HHZ. 2021-01-24T08:51:59.47 0.6 undecidable manual S 185 0.5837 99 0.78 49
IV.HLNI.HHZ. 2021-01-24T08:51:54.70 0.6 undecidable manual S 208 0.4416 103 0.13 60
IV.SSY.HHZ. 2021-01-24T08:51:50.25 0.3 undecidable manual P 185 0.5837 99 -0.03 90
IV.HCRL.HHZ. 2021-01-24T08:51:48.02 0.3 undecidable manual P 190 0.4632 102 -0.23 88
IV.HLNI.HHZ. 2021-01-24T08:51:47.41 0.3 undecidable manual P 208 0.4416 103 -0.48 84
IV.ECTS.HHZ. 2021-01-24T08:51:46.93 0.6 undecidable manual S 357 0.1421 134 0.41 60
IV.ESPC.HHN. 2021-01-24T08:51:45.32 0.6 undecidable manual S 240 0.0953 147 -0.3 63
IV.EFIU.HHE. 2021-01-24T08:51:45.14 0.6 undecidable manual S 51 0.08 151 -0.25 63
IV.EVRN.HHZ. 2021-01-24T08:51:45.32 0.6 undecidable manual S 177 0.0504 161 0.28 63
IV.ESAL.HHE. 2021-01-24T08:51:44.74 0.6 undecidable manual S 8 0.0153 174 -0.08 67
IV.AIO.HHZ. 2021-01-24T08:51:44.80 0.3 undecidable manual P 19 0.2446 116 0.11 96
IV.ECTS.HHZ. 2021-01-24T08:51:43.30 0.3 undecidable manual P 357 0.1421 134 0.05 98
IV.ECBD.HHN. 2021-01-24T08:51:42.59 0.3 undecidable manual P 319 0.054 160 0.18 97
IV.EMFO.HHE. 2021-01-24T08:51:42.59 0.3 undecidable manual P 263 0.0333 168 0.28 95
IV.EPOZ.HHZ. 2021-01-24T08:51:42.64 0.3 undecidable manual P 146 0.0809 151 0.03 100
IV.EVRN.HHZ. 2021-01-24T08:51:42.42 0.3 undecidable manual P 177 0.0504 161 0.03 100
IV.ESPC.HHN. 2021-01-24T08:51:42.64 0.3 undecidable manual P 240 0.0953 147 -0.09 98
IV.EFIU.HHE. 2021-01-24T08:51:42.44 0.3 undecidable manual P 51 0.08 151 -0.15 97
IV.ESAL.HHE. 2021-01-24T08:51:41.95 0.3 undecidable manual P 8 0.0153 174 -0.31 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HHE. ML:2.5 0.002555 0.8 AML other m 2021-01-24T08:51:45.53
IV.EVRN.HNE. ML:2.4 0.00223 0.78 AML other m 2021-01-24T08:51:45.54
IV.EVRN.HNN. ML:2.3 0.001645 0.86 AML other m 2021-01-24T08:51:45.50
IV.EVRN.HHN. ML:2.2 0.001535 0.6 AML other m 2021-01-24T08:51:49.10
IV.ECTS.HHE. ML:1.6 0.00029055965 0.48 AML other m 2021-01-24T08:51:47.40
IV.AIO.HHE. ML:1.3 8.472113E-5 0.4224 AML other m 2021-01-24T08:51:51.46
IV.AIO.HHN. ML:1.2 7.6535605E-5 0.1984 AML other m 2021-01-24T08:51:51.12
IV.HCRL.HHE. ML:1.1 3.2444725E-5 0.1216 AML other m 2021-01-24T08:51:56.18
IV.SSY.HHN. ML:2.1 0.00020445165 0.1344 AML other m 2021-01-24T08:52:01.07
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