Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 06-05-2021 and time 16:21:58 (Italy) in region 2 km SW Giarre (CT)

A magnitude ML 1.9 earthquake occured in region: 2 km SW Giarre (CT), on

  • 06-05-2021 14:21:58 (UTC)
  • 06-05-2021 16:21:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7210, 15.1740 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 3 14838 42497
Sant'Alfio CT 4 1582 44079
Mascali CT 5 14282 58361
Santa Venerina CT 5 8592 66953
Milo CT 5 1087 68040
Zafferana Etnea CT 7 9517 77557
Fiumefreddo di Sicilia CT 9 9623 87180
Piedimonte Etneo CT 10 3963 91143
Acireale CT 12 52622 143765
Calatabiano CT 13 5308 149073
Aci Sant'Antonio CT 13 17984 167057
Aci Catena CT 13 29851 196908
Linguaglossa CT 14 5403 202311
Viagrande CT 14 8563 210874
Trecastagni CT 14 10910 221784
Aci Bonaccorsi CT 15 3524 225308
Pedara CT 15 14102 239410
Giardini-Naxos ME 16 9415 248825
Valverde CT 16 7840 256665
Gaggi ME 16 3184 259849
San Giovanni la Punta CT 17 23060 282909
Nicolosi CT 17 7463 290372
Taormina ME 18 10960 301332
Castelmola ME 18 1088 302420
San Gregorio di Catania CT 18 11966 314386
Tremestieri Etneo CT 18 20589 334975
Aci Castello CT 18 18723 353698
Castiglione di Sicilia CT 19 3215 356913
Mascalucia CT 19 31958 388871
Motta Camastra ME 20 845 389716
Graniti ME 20 1492 391208
Sant'Agata li Battiati CT 20 9479 400687

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
63 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 1.9 2021-05-06
14:21:58		 37.7207 15.1738 19 2021-12-29
11:12:03		 Bollettino Sismico Italiano INGV 90893821
Reviewed
Rev200 		ML 1.6 2021-05-06
14:21:58		 37.69 15.183 13 2021-10-08
10:44:23		 Sala Operativa INGV_OE (Catania) 89840841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-06 14:21:58 ± 0.09
Latitude 37.7207 ± 0.0036
Longitude 15.1738 ± 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 90893821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 431
Semi-minor axis of confidence ellipse (meter) 356
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 95
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 50
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76173
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 90893821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-07 11:01:58

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89840841
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-06 14:36:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-05-06T14:22:23.86 0.3 undecidable manual S 183 84.5487 96 0.34 61
IV.RESU.HHN. 2021-05-06T14:22:14.11 3.0 undecidable manual P 0.11 0
IV.HAVL.HHZ. 2021-05-06T14:22:12.73 0.1 undecidable manual P 183 84.5487 96 -0.16 86
IV.NOV.HHZ. 2021-05-06T14:22:10.52 0.3 undecidable manual S 355 34.2435 109 0.18 70
IV.MSRU.HHZ. 2021-05-06T14:22:09.79 0.6 undecidable manual P 26 66.9774 98 -0.42 42
IV.SSY.HHN. 2021-05-06T14:22:09.88 0.6 undecidable manual P 188 63.0924 99 0.27 43
IV.AIO.HHZ. 2021-05-06T14:22:08.49 0.3 undecidable manual S 11 28.2495 114 -0.37 68
IV.HLNI.HHZ. 2021-05-06T14:22:07.26 0.6 negative manual P 213 49.1175 102 -0.23 45
IV.EMSG.HHZ. 2021-05-06T14:22:07.55 0.3 undecidable manual S 300 22.5552 121 0.03 74
IV.HCRL.HHZ. 2021-05-06T14:22:07.75 0.1 positive manual P 194 50.1165 102 0.1 92
IV.ECZM.HHN. 2021-05-06T14:22:07.87 0.6 undecidable manual S 273 23.6541 120 0.09 49
IV.ESVO.HHE. 2021-05-06T14:22:07.45 0.3 undecidable manual S 286 20.7681 124 0.34 70
IV.HAGA.HHZ. 2021-05-06T14:22:07.48 0.6 undecidable manual P 182 48.3183 102 0.1 46
IV.EMCN.HHN. 2021-05-06T14:22:06.14 0.3 undecidable manual S 302 14.5743 136 0.29 71
IV.ECTS.HHN. 2021-05-06T14:22:06.50 0.3 undecidable manual S 346 18.4704 128 -0.12 73
IV.EMNR.HHZ. 2021-05-06T14:22:06.55 0.3 undecidable manual S 309 16.7721 131 0.28 71
IV.MUCR.HHE. 2021-05-06T14:22:06.81 0.6 undecidable manual P 324 44.3223 104 0.03 47
IV.EMPL.HHZ. 2021-05-06T14:22:06.22 0.3 undecidable manual S 256 18.4704 128 -0.4 68
IV.ECNE.HHN. 2021-05-06T14:22:06.56 0.6 undecidable manual S 288 15.873 133 0.46 46
IV.ECBD.HHN. 2021-05-06T14:22:05.30 0.3 undecidable manual S 311 10.0788 147 0.19 73
IV.ESPC.HHN. 2021-05-06T14:22:05.07 0.3 undecidable manual S 256 13.1757 139 -0.54 67
IV.ESLN.HHZ. 2021-05-06T14:22:05.82 0.3 undecidable manual S 260 17.7711 130 -0.65 63
IV.EPIT.HHE. 2021-05-06T14:22:05.98 0.3 undecidable manual S 314 14.3745 137 0.17 73
IV.NOV.HHZ. 2021-05-06T14:22:05.02 0.1 undecidable manual P 355 34.2435 109 -0.26 92
IV.EMFS.HHE. 2021-05-06T14:22:05.71 0.3 undecidable manual S 270 15.4734 134 -0.3 70
IV.EPZF.HHZ. 2021-05-06T14:22:05.20 0.6 undecidable manual P 293 30.0477 113 0.52 44
IV.EPOZ.HHE. 2021-05-06T14:22:04.89 0.6 undecidable manual S 167 5.5944 161 0.31 47
IV.EMFO.HHE. 2021-05-06T14:22:04.78 0.3 undecidable manual S 283 7.4814 155 0.01 76
IV.ESAL.HHE. 2021-05-06T14:22:04.47 0.3 undecidable manual S 318 5.1948 162 -0.08 75
IV.EVRN.HHE. 2021-05-06T14:22:04.73 0.6 undecidable manual S 224 4.8951 163 0.21 49
IV.ECZM.HHN. 2021-05-06T14:22:04.08 0.1 undecidable manual P 273 23.6541 120 0.28 93
IV.EFIU.HHE. 2021-05-06T14:22:04.74 0.6 undecidable manual S 23 8.2806 153 -0.13 50
IV.AIO.HHZ. 2021-05-06T14:22:04.39 0.3 undecidable manual P 11 28.2495 114 -0.04 73
IV.ECNE.HHN. 2021-05-06T14:22:03.14 0.3 undecidable manual P 288 15.873 133 0.31 70
IV.ESVO.HHE. 2021-05-06T14:22:03.70 0.3 undecidable manual P 286 20.7681 124 0.28 70
IV.ECHR.HHE. 2021-05-06T14:22:03.88 0.3 undecidable manual P 261 23.2545 121 0.14 72
IV.ECTS.HHN. 2021-05-06T14:22:03.09 0.3 undecidable manual P 346 18.4704 128 -0.05 74
IV.EMNR.HHZ. 2021-05-06T14:22:03.18 0.3 undecidable manual P 309 16.7721 131 0.25 71
IV.EMSG.HHZ. 2021-05-06T14:22:03.84 0.3 undecidable manual P 300 22.5552 121 0.19 71
IV.EMFS.HHE. 2021-05-06T14:22:02.52 0.6 undecidable manual P 270 15.4734 134 -0.26 47
IV.EMCN.HHN. 2021-05-06T14:22:02.72 0.3 undecidable manual P 302 14.5743 136 0.03 75
IV.EPOZ.HHE. 2021-05-06T14:22:02.16 0.3 undecidable manual P 167 5.5944 161 0.2 73
IV.ECBD.HHN. 2021-05-06T14:22:02.21 0.1 undecidable manual P 311 10.0788 147 -0.05 100
IV.EMPL.HHZ. 2021-05-06T14:22:02.85 0.3 undecidable manual P 256 18.4704 128 -0.28 70
IV.ESPC.HHN. 2021-05-06T14:22:02.21 0.3 undecidable manual P 256 13.1757 139 -0.34 70
IV.ESLN.HHZ. 2021-05-06T14:22:02.65 0.3 undecidable manual P 260 17.7711 130 -0.4 69
IV.EPIT.HHE. 2021-05-06T14:22:02.84 0.3 undecidable manual P 314 14.3745 137 0.17 72
IV.ESAL.HHE. 2021-05-06T14:22:01.76 0.6 undecidable manual P 318 5.1948 162 -0.17 49
IV.EVRN.HHE. 2021-05-06T14:22:01.78 0.3 undecidable manual P 224 4.8951 163 -0.14 74
IV.EFIU.HHE. 2021-05-06T14:22:01.89 0.6 undecidable manual P 23 8.2806 153 -0.23 49
IV.EMFO.HHE. 2021-05-06T14:22:01.94 0.3 undecidable manual P 283 7.4814 155 -0.13 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:2.1 0.001073 0.4 AML other m 2021-05-06T14:22:05.00
IV.ESAL.HHE. ML:2.3 0.001575 0.36 AML other m 2021-05-06T14:22:05.26
IV.ECTS.HHE. ML:2.0 0.0005909999999999999 0.62 AML other m 2021-05-06T14:22:07.03
IV.ECTS.HHN. ML:1.9 0.0004365 0.84 AML other m 2021-05-06T14:22:07.06
IV.EMPL.HHN. ML:2.2 0.001065 0.18 AML other m 2021-05-06T14:22:08.13
IV.EPIT.HHE. ML:2.1 0.0009075 0.5 AML other m 2021-05-06T14:22:08.32
IV.EPIT.HHN. ML:2.2 0.0012250000000000002 0.34 AML other m 2021-05-06T14:22:08.60
IV.EMSG.HHN. ML:2.0 0.0004945 1.64 AML other m 2021-05-06T14:22:08.13
IV.AIO.HHE. ML:1.5 0.0001295 0.76 AML other m 2021-05-06T14:22:10.54
IV.AIO.HHN. ML:1.5 0.0001395 0.86 AML other m 2021-05-06T14:22:11.15
IV.EMPL.HHE. ML:2.0 0.0005840000000000001 0.22 AML other m 2021-05-06T14:22:12.79
IV.EMSG.HHE. ML:1.8 0.000368 1.12 AML other m 2021-05-06T14:22:14.62
IV.HCRL.HHN. ML:1.4 0.00006555 0.44 AML other m 2021-05-06T14:22:15.99
IV.HCRL.HHE. ML:1.6 0.00008995 0.64 AML other m 2021-05-06T14:22:19.60
IV.SSY.HHE. ML:1.9 0.00015949999999999997 0.64 AML other m 2021-05-06T14:22:22.73
IV.MSRU.HHE. ML:1.6 0.0000618 1.7 AML other m 2021-05-06T14:22:23.86
IV.MSRU.HHN. ML:1.4 0.0000457 0.9 AML other m 2021-05-06T14:22:23.50
IV.HAVL.HHE. ML:1.9 0.00010250000000000001 1.08 AML other m 2021-05-06T14:22:25.66
IV.HAVL.HHN. ML:2.1 0.0001575 1.18 AML other m 2021-05-06T14:22:26.18
IV.SSY.HHN. ML:2.3 0.000334 0.86 AML other m 2021-05-06T14:22:26.36
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