Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 19-03-2021 and time 15:30:01 (Italy) in region 1 km SW Sant'Alfio (CT)

A magnitude ML 2.2 earthquake occured in region: 1 km SW Sant'Alfio (CT), on

  • 19-03-2021 14:30:01 (UTC)
  • 19-03-2021 15:30:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7360, 15.1370 at 8 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 27659 30328
Zafferana Etnea CT 5 9517 39845
Santa Venerina CT 5 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 12 5403 96546
Calatabiano CT 13 5308 101854
Acireale CT 14 52622 154476
Trecastagni CT 14 10910 165386
Viagrande CT 14 8563 173949
Aci Sant'Antonio CT 14 17984 191933
Aci Catena CT 15 29851 221784
Pedara CT 15 14102 235886
Aci Bonaccorsi CT 15 3524 239410
Gaggi ME 16 3184 242594
Castiglione di Sicilia CT 17 3215 245809
Nicolosi CT 17 7463 253272
Giardini-Naxos ME 17 9415 262687
Valverde CT 17 7840 270527
San Giovanni la Punta CT 18 23060 293587
Motta Camastra ME 18 845 294432
Taormina ME 18 10960 305392
Francavilla di Sicilia ME 19 3945 309337
Castelmola ME 19 1088 310425
Tremestieri Etneo CT 19 20589 331014
Graniti ME 19 1492 332506
San Gregorio di Catania CT 19 11966 344472
Mascalucia CT 19 31958 376430
Moio Alcantara ME 20 717 377147
Aci Castello CT 20 18723 395870

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km N of Acireale (52622 inhabitants)
26 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
76 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 2.2 2021-03-19
14:30:01		 37.736 15.1367 9 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 90803731
Reviewed
Rev200 		ML 2.0 2021-03-19
14:30:00		 37.743 15.118 6 2021-06-04
23:06:56		 Sala Operativa INGV_OE (Catania) 88278691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-19 14:30:01 ± 0.11
Latitude 37.7360 ± 0.0045
Longitude 15.1367 ± 0.0068
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90803731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 609
Semi-minor axis of confidence ellipse (meter) 232
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) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
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) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.77611
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 88278691
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-03-19 14:38:06

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 90803731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-04 23:06:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-03-19T14:30:16.36 0.3 undecidable manual P 181 86.1471 50 -0.05 65
IV.IVPL.HHZ. 2021-03-19T14:30:14.56 0.6 undecidable manual P 349 72.372 50 0.28 42
IV.AIO.HHZ. 2021-03-19T14:30:11.13 0.6 undecidable manual S 18 27.4503 107 -0.21 47
IV.GALF.HHZ. 2021-03-19T14:30:11.50 0.3 undecidable manual P 267 50.1165 50 0.65 59
IV.HLNI.HHZ. 2021-03-19T14:30:10.21 0.3 undecidable manual P 209 48.9177 50 -0.45 64
IV.ESCV.HHZ. 2021-03-19T14:30:08.12 0.6 undecidable manual P 273 28.2495 107 0.84 38
IV.EMNR.HHZ. 2021-03-19T14:30:07.73 0.6 undecidable manual S 313 13.1757 123 0.91 38
IV.ECTS.HHZ. 2021-03-19T14:30:07.95 0.6 undecidable manual S 355 16.2726 118 0.21 48
IV.EMPL.HHZ. 2021-03-19T14:30:07.60 0.6 undecidable manual S 247 15.873 118 -0.03 49
IV.EPOZ.HHZ. 2021-03-19T14:30:06.09 0.6 undecidable manual S 147 8.4804 135 0.56 44
IV.EFIU.HHZ. 2021-03-19T14:30:06.26 0.6 undecidable manual S 47 8.7801 134 0.64 43
IV.EPZF.HHZ. 2021-03-19T14:30:06.75 0.6 undecidable manual P 292 26.3514 108 -0.18 47
IV.EPIT.HHZ. 2021-03-19T14:30:06.87 0.6 undecidable manual S 320 10.878 128 0.7 42
IV.AIO.HHZ. 2021-03-19T14:30:06.86 0.3 undecidable manual P 18 27.4503 107 -0.27 69
IV.EMCN.HHN. 2021-03-19T14:30:06.48 0.6 undecidable manual S 304 10.878 128 0.31 47
IV.ENIC.HHZ. 2021-03-19T14:30:05.37 0.3 undecidable manual P 221 15.3735 119 0.47 67
IV.EVRN.HNZ. 2021-03-19T14:30:05.08 0.6 undecidable manual S 181 5.1948 149 0.25 48
IV.ECBD.HHN. 2021-03-19T14:30:05.09 0.6 undecidable manual S 318 6.5934 142 -0.01 50
IV.ESPC.HHN. 2021-03-19T14:30:05.97 0.6 undecidable manual S 243 10.6782 128 -0.16 48
IV.ESAL.HHZ. 2021-03-19T14:30:04.21 0.6 undecidable manual S 355 2.0979 166 -0.2 49
IV.EPIT.HHZ. 2021-03-19T14:30:04.16 0.1 positive manual P 320 10.878 128 0.01 100
IV.EMCN.HHN. 2021-03-19T14:30:04.12 0.1 undecidable manual P 304 10.878 128 -0.03 100
IV.EMFO.HHE. 2021-03-19T14:30:04.41 0.6 undecidable manual S 269 4.0959 154 -0.23 48
IV.EPOZ.HHZ. 2021-03-19T14:30:04.23 0.1 positive manual P 147 8.4804 135 0.45 91
IV.EMNR.HHZ. 2021-03-19T14:30:04.48 0.1 undecidable manual P 313 13.1757 123 -0.04 99
IV.ECTS.HHZ. 2021-03-19T14:30:04.67 0.3 undecidable manual P 355 16.2726 118 -0.38 69
IV.EMPL.HHZ. 2021-03-19T14:30:04.74 0.1 undecidable manual P 247 15.873 118 -0.25 94
IV.ESPC.HHN. 2021-03-19T14:30:03.75 0.1 undecidable manual P 243 10.6782 128 -0.37 93
IV.EVRN.HNZ. 2021-03-19T14:30:03.32 0.1 positive manual P 181 5.1948 149 -0.05 100
IV.ECBD.HHN. 2021-03-19T14:30:03.22 0.1 undecidable manual P 318 6.5934 142 -0.31 95
IV.EFIU.HHZ. 2021-03-19T14:30:03.76 0.1 negative manual P 47 8.7801 134 -0.06 99
IV.ESAL.HHZ. 2021-03-19T14:30:02.71 0.1 undecidable manual P 355 2.0979 166 -0.42 93
IV.EMFO.HHE. 2021-03-19T14:30:02.88 0.1 undecidable manual P 269 4.0959 154 -0.39 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HNE. ML:2.7 0.01008 0.28 AML other m 2021-03-19T14:30:05.62
IV.EFIU.HHE. ML:2.2 0.002255 1.04 AML other m 2021-03-19T14:30:07.47
IV.EPIT.HHN. ML:2.6 0.0056 0.24 AML other m 2021-03-19T14:30:07.62
IV.EFIU.HHN. ML:2.1 0.0018900000000000002 1.32 AML other m 2021-03-19T14:30:08.83
IV.EPIT.HHE. ML:2.5 0.004025 0.94 AML other m 2021-03-19T14:30:08.18
IV.EPOZ.HHE. ML:2.2 0.0022800000000000003 0.38 AML other m 2021-03-19T14:30:08.37
IV.ECTS.HHE. ML:1.9 0.0008045 0.4 AML other m 2021-03-19T14:30:08.67
IV.EVRN.HNN. ML:2.9 0.015 0.24 AML other m 2021-03-19T14:30:08.84
IV.EVRN.HHN. ML:2.8 0.010915 0.24 AML other m 2021-03-19T14:30:08.85
IV.EVRN.HHE. ML:2.8 0.0125 0.22 AML other m 2021-03-19T14:30:08.72
IV.EPOZ.HHN. ML:2.3 0.003205 0.6 AML other m 2021-03-19T14:30:08.84
IV.ECTS.HHN. ML:1.9 0.000808 1.04 AML other m 2021-03-19T14:30:09.70
IV.ENIC.HHN. ML:2.2 0.001635 1.06 AML other m 2021-03-19T14:30:10.08
IV.ENIC.HHE. ML:2.3 0.0018549999999999999 1.72 AML other m 2021-03-19T14:30:11.08
IV.EMPL.HHE. ML:2.3 0.002125 1.08 AML other m 2021-03-19T14:30:11.28
IV.AIO.HHE. ML:2.0 0.00048350000000000004 1.66 AML other m 2021-03-19T14:30:13.03
IV.EMPL.HHN. ML:2.5 0.0031399999999999996 1.02 AML other m 2021-03-19T14:30:13.48
IV.EPZF.HHN. ML:2.2 0.0009755 0.96 AML other m 2021-03-19T14:30:14.10
IV.AIO.HHN. ML:2.0 0.000544 0.32 AML other m 2021-03-19T14:30:14.29
IV.EPZF.HHE. ML:2.2 0.000889 0.34 AML other m 2021-03-19T14:30:14.89
IV.HLNI.HHE. ML:1.4 0.00007195 0.6 AML other m 2021-03-19T14:30:18.18
IV.HLNI.HHN. ML:1.4 0.0000658 1.2 AML other m 2021-03-19T14:30:19.27
IV.HAVL.HHE. ML:2.0 0.0001385 1.28 AML other m 2021-03-19T14:30:22.16
IV.GALF.HHN. ML:2.2 0.00039349999999999997 0.64 AML other m 2021-03-19T14:30:28.43
IV.GALF.HHE. ML:2.1 0.000301 0.52 AML other m 2021-03-19T14:30:31.19
IV.HAVL.HHN. ML:2.2 0.000219 1.1 AML other m 2021-03-19T14:30:32.90
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