Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 07-05-2021 and time 01:41:45 (Italy) in region 3 km SW Giarre (CT)

A magnitude ML 1.5 earthquake occured in region: 3 km SW Giarre (CT), on

  • 06-05-2021 23:41:45 (UTC)
  • 07-05-2021 01:41:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7170, 15.1610 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
Giarre CT 3 27659 27659
Sant'Alfio CT 3 1582 29241
Santa Venerina CT 4 8592 37833
Milo CT 4 1087 38920
Riposto CT 4 14838 53758
Zafferana Etnea CT 6 9517 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
Aci Catena CT 13 29851 191600
Viagrande CT 13 8563 200163
Trecastagni CT 13 10910 211073
Calatabiano CT 13 5308 216381
Aci Bonaccorsi CT 14 3524 219905
Linguaglossa CT 14 5403 225308
Pedara CT 14 14102 239410
Valverde CT 16 7840 247250
Nicolosi CT 16 7463 254713
San Giovanni la Punta CT 17 23060 277773
Gaggi ME 17 3184 280957
Giardini-Naxos ME 17 9415 290372
Tremestieri Etneo CT 17 20589 310961
San Gregorio di Catania CT 17 11966 322927
Aci Castello CT 18 18723 341650
Mascalucia CT 19 31958 373608
Taormina ME 19 10960 384568
Castiglione di Sicilia CT 19 3215 387783
Sant'Agata li Battiati CT 19 9479 397262
Castelmola ME 19 1088 398350
Gravina di Catania CT 19 25838 424188
Motta Camastra ME 20 845 425033
San Pietro Clarenza CT 20 7743 432776

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
96 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 1.5 2021-05-06
23:41:45		 37.717 15.1608 19 2021-12-29
11:12:03		 Bollettino Sismico Italiano INGV 90784881
Reviewed
Rev200 		ML 1.0 2021-05-06
23:41:45		 37.705 15.132 15 2021-10-08
11:30:10		 Sala Operativa INGV_OE (Catania) 89859551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-06 23:41:45 ± 0.08
Latitude 37.7170 ± 0.0027
Longitude 15.1608 ± 0.0057
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 90784881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 465
Semi-minor axis of confidence ellipse (meter) 173
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) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.75723
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89859551
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-06 23:48:51

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 90784881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 09:35:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-05-06T23:42:11.21 0.3 undecidable manual S 182 84.0492 96 0.25 62
IV.HCRL.HHZ. 2021-05-06T23:42:02.12 0.3 undecidable manual S 193 49.4172 101 0.31 65
IV.HLNI.HHZ. 2021-05-06T23:42:01.42 0.3 undecidable manual S 212 48.1185 102 -0.05 69
IV.HAVL.HHZ. 2021-05-06T23:42:00.29 0.3 undecidable manual P 182 84.0492 96 -0.11 64
IV.NOV.HHZ. 2021-05-06T23:41:58.15 0.6 undecidable manual S 356 34.5432 108 0.19 46
IV.SSY.HHN. 2021-05-06T23:41:57.41 0.3 undecidable manual P 187 62.493 98 0.31 63
IV.HCRL.HHZ. 2021-05-06T23:41:55.01 0.3 undecidable manual P 193 49.4172 101 -0.1 68
IV.EMSG.HHZ. 2021-05-06T23:41:55.10 0.6 undecidable manual S 302 21.7671 121 0.25 46
IV.MUCR.HHE. 2021-05-06T23:41:54.41 0.1 undecidable manual P 325 44.0226 103 0.11 91
IV.HLNI.HHZ. 2021-05-06T23:41:54.56 0.3 undecidable manual P 212 48.1185 102 -0.35 65
IV.ENIC.HHZ. 2021-05-06T23:41:53.93 0.3 undecidable manual S 232 15.4734 133 0.43 68
IV.EPIT.HHZ. 2021-05-06T23:41:53.37 0.3 undecidable manual S 319 13.875 137 0.17 72
IV.ESLN.HHZ. 2021-05-06T23:41:53.06 0.6 undecidable manual S 261 16.5723 131 -0.66 41
IV.EMPL.HHZ. 2021-05-06T23:41:53.42 0.6 undecidable manual S 256 17.2716 129 -0.44 44
IV.ECTS.HHE. 2021-05-06T23:41:53.88 0.3 undecidable manual S 349 18.6702 127 -0.26 69
IV.EMCN.HHN. 2021-05-06T23:41:53.68 0.6 undecidable manual S 306 13.875 137 0.49 45
IV.EMNR.HHZ. 2021-05-06T23:41:53.96 0.3 undecidable manual S 313 16.1727 131 0.32 69
IV.EFIU.HHZ. 2021-05-06T23:41:52.26 0.3 undecidable manual S 28 9.1797 149 -0.17 71
IV.ESPC.HHN. 2021-05-06T23:41:52.51 0.6 undecidable manual S 257 11.9769 141 -0.36 45
IV.EMFO.HHE. 2021-05-06T23:41:52.37 0.3 undecidable manual S 288 6.4935 157 0.25 72
IV.EVRN.HHZ. 2021-05-06T23:41:52.16 0.3 undecidable manual S 216 3.7962 166 0.27 72
IV.NOV.HHZ. 2021-05-06T23:41:52.92 0.1 undecidable manual P 356 34.5432 108 0.04 94
IV.EPZF.HHZ. 2021-05-06T23:41:52.27 0.1 undecidable manual P 294 29.1486 112 0.16 92
IV.EMFS.HHE. 2021-05-06T23:41:52.99 0.3 undecidable manual S 271 14.2746 136 -0.28 69
IV.ECBD.HHN. 2021-05-06T23:41:52.94 0.6 undecidable manual S 317 9.5793 148 0.45 46
IV.ESAL.HHE. 2021-05-06T23:41:51.89 0.3 undecidable manual S 331 4.7952 163 -0.07 73
IV.EMSG.HHZ. 2021-05-06T23:41:51.42 1.0 undecidable manual P 302 21.7671 121 0.33 23
IV.ECZM.HHN. 2021-05-06T23:41:51.00 0.1 undecidable manual P 274 22.5552 120 -0.2 94
IV.AIO.HHE. 2021-05-06T23:41:51.89 0.1 undecidable manual P 13 28.8489 113 -0.18 93
IV.ECHR.HHE. 2021-05-06T23:41:51.34 0.1 undecidable manual P 261 22.0668 121 0.22 93
IV.ECTS.HHE. 2021-05-06T23:41:50.45 0.3 undecidable manual P 349 18.6702 127 -0.23 70
IV.EMCN.HHN. 2021-05-06T23:41:50.06 0.1 undecidable manual P 306 13.875 137 -0.08 97
IV.EMNR.HHZ. 2021-05-06T23:41:50.64 0.3 undecidable manual P 313 16.1727 131 0.25 70
IV.ESVO.HHE. 2021-05-06T23:41:50.89 0.1 undecidable manual P 288 19.7691 125 0.06 96
IV.ENIC.HHZ. 2021-05-06T23:41:50.73 0.6 undecidable manual P 232 15.4734 133 0.41 45
IV.EPIT.HHZ. 2021-05-06T23:41:50.27 0.1 undecidable manual P 319 13.875 137 0.13 96
IV.ESLN.HHZ. 2021-05-06T23:41:50.10 0.3 undecidable manual P 261 16.5723 131 -0.34 69
IV.EMPL.HHZ. 2021-05-06T23:41:50.29 0.3 undecidable manual P 256 17.2716 129 -0.23 70
IV.ECBD.HHN. 2021-05-06T23:41:49.75 0.1 undecidable manual P 317 9.5793 148 0.02 99
IV.ESPC.HHN. 2021-05-06T23:41:49.70 0.1 undecidable manual P 257 11.9769 141 -0.25 94
IV.EMFO.HHE. 2021-05-06T23:41:49.41 0.3 undecidable manual P 288 6.4935 157 -0.11 73
IV.ESAL.HHE. 2021-05-06T23:41:49.32 0.3 undecidable manual P 331 4.7952 163 -0.1 73
IV.EPOZ.HHZ. 2021-05-06T23:41:49.63 0.1 undecidable manual P 154 5.5944 160 0.17 97
IV.EVRN.HHZ. 2021-05-06T23:41:49.42 0.1 undecidable manual P 216 3.7962 166 0.04 100
IV.EFIU.HHZ. 2021-05-06T23:41:49.55 0.1 positive manual P 28 9.1797 149 -0.15 96
IV.EMFS.HHE. 2021-05-06T23:41:49.84 0.1 undecidable manual P 271 14.2746 136 -0.34 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:1.5 0.00027 0.24 AML other m 2021-05-06T23:41:52.49
IV.EVRN.HNN. ML:2.0 0.0009019999999999999 0.16 AML other m 2021-05-06T23:41:52.47
IV.EVRN.HHN. ML:1.9 0.0007025 0.14 AML other m 2021-05-06T23:41:52.47
IV.EVRN.HNE. ML:2.0 0.0008365 0.18 AML other m 2021-05-06T23:41:52.59
IV.EVRN.HHE. ML:2.0 0.0010049999999999998 0.22 AML other m 2021-05-06T23:41:52.59
IV.ESAL.HHE. ML:1.6 0.000323 1.2 AML other m 2021-05-06T23:41:52.75
IV.EFIU.HHN. ML:1.2 0.00011449999999999999 1.16 AML other m 2021-05-06T23:41:53.41
IV.EFIU.HHE. ML:1.2 0.000135 0.58 AML other m 2021-05-06T23:41:53.81
IV.ECTS.HHE. ML:1.4 0.0001545 0.58 AML other m 2021-05-06T23:41:54.47
IV.ECTS.HHN. ML:1.2 0.00010614999999999999 0.76 AML other m 2021-05-06T23:41:54.47
IV.EMPL.HHN. ML:1.7 0.000308 0.16 AML other m 2021-05-06T23:41:55.49
IV.EMPL.HHE. ML:1.4 0.000178 1 AML other m 2021-05-06T23:41:55.21
IV.EPIT.HHN. ML:1.6 0.0003135 1.62 AML other m 2021-05-06T23:41:55.05
IV.ENIC.HHE. ML:1.5 0.00019700000000000002 0.12 AML other m 2021-05-06T23:41:55.95
IV.EPIT.HHE. ML:1.6 0.00027749999999999997 0.34 AML other m 2021-05-06T23:41:57.19
IV.ENIC.HHN. ML:1.4 0.0001705 0.14 AML other m 2021-05-06T23:41:58.12
IV.EMSG.HHN. ML:1.3 0.00011649999999999999 0.42 AML other m 2021-05-06T23:41:59.88
IV.EMSG.HHE. ML:1.3 0.00010900000000000002 0.3 AML other m 2021-05-06T23:42:01.05
IV.HAVL.HHN. ML:1.7 0.0000648 0.56 AML other m 2021-05-06T23:42:13.60
IV.HAVL.HHE. ML:1.5 0.0000392 1.46 AML other m 2021-05-06T23:42:13.92
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