Earthquake with magnitude of ML 2.1 on date 30-04-2021 and time 03:58:09 (Italy) in region 2 km S Giarre (CT)

A magnitude ML 2.1 earthquake occured in region: 2 km S Giarre (CT), on

  • 30-04-2021 01:58:09 (UTC)
  • 30-04-2021 03:58:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.712, 15.188 at 21 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
Giarre CT 2 27659 27659
Riposto CT 3 14838 42497
Santa Venerina CT 5 8592 51089
Mascali CT 5 14282 65371
Sant'Alfio CT 5 1582 66953
Milo CT 7 1087 68040
Zafferana Etnea CT 8 9517 77557
Fiumefreddo di Sicilia CT 9 9623 87180
Piedimonte Etneo CT 11 3963 91143
Acireale CT 11 52622 143765
Aci Catena CT 13 29851 173616
Aci Sant'Antonio CT 13 17984 191600
Calatabiano CT 13 5308 196908
Viagrande CT 14 8563 205471
Trecastagni CT 14 10910 216381
Aci Bonaccorsi CT 14 3524 219905
Linguaglossa CT 15 5403 225308
Pedara CT 15 14102 239410
Valverde CT 16 7840 247250
Giardini-Naxos ME 16 9415 256665
Gaggi ME 17 3184 259849
San Giovanni la Punta CT 17 23060 282909
Taormina ME 18 10960 293869
San Gregorio di Catania CT 18 11966 305835
Aci Castello CT 18 18723 324558
Nicolosi CT 18 7463 332021
Castelmola ME 18 1088 333109
Tremestieri Etneo CT 18 20589 353698
Mascalucia CT 19 31958 385656
Sant'Agata li Battiati CT 19 9479 395135
Castiglione di Sicilia CT 20 3215 398350

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of Acireale (52622 inhabitants)
25 Km NE of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
73 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 2.1 2021-04-30
01:58:09
37.7123 15.1885 21 2021-07-12
16:55:10
Bollettino Sismico Italiano INGV 89964431
Reviewed
Rev200
ML 1.9 2021-04-30
01:58:09
37.741 15.136 18 2021-06-30
09:15:55
Sala Operativa INGV_OE (Catania) 89614991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-30 01:58:09 ± 0.21
Latitude 37.7123 ± 0.0072
Longitude 15.1885 ± 0.0125
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89964431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 843
Semi-minor axis of confidence ellipse (meter) 779
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 840
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.2608
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 89964431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-30 09:15:43

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89614991
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-04-30 02:03:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AIO.HHZ. 2021-04-30T01:58:20.57 0.3 undecidable manual S 8 0.2608 117 0.5 67
IV.EMSG.HHZ. 2021-04-30T01:58:19.28 0.6 undecidable manual S 300 0.2176 123 0.33 46
IV.EMNR.HHZ. 2021-04-30T01:58:18.20 0.3 undecidable manual S 309 0.1655 132 0.48 68
IV.ECTS.HHZ. 2021-04-30T01:58:17.49 0.3 undecidable manual S 343 0.1781 130 -0.51 66
IV.ENIC.HHZ. 2021-04-30T01:58:17.60 0.6 undecidable manual S 239 0.1547 134 0.11 48
IV.EMCN.HHZ. 2021-04-30T01:58:17.25 0.3 undecidable manual S 303 0.1457 136 -0.05 75
IV.EPIT.HHZ. 2021-04-30T01:58:17.53 0.3 undecidable manual S 314 0.1439 137 0.27 71
IV.ECBD.HHZ. 2021-04-30T01:58:16.57 0.3 undecidable manual S 310 0.1052 146 0.02 75
IV.ESPC.HHZ. 2021-04-30T01:58:16.31 0.3 undecidable manual S 261 0.1286 140 -0.66 65
IV.EMFO.HHZ. 2021-04-30T01:58:16.22 0.3 undecidable manual S 287 0.0809 153 0.04 75
IV.EFIU.HHZ. 2021-04-30T01:58:16.20 0.3 undecidable manual S 13 0.0791 154 0.04 76
IV.EMSG.HHZ. 2021-04-30T01:58:15.10 0.1 undecidable manual P 300 0.2176 123 0.26 94
IV.ESAL.HHZ. 2021-04-30T01:58:15.47 0.6 undecidable manual S 315 0.0603 159 -0.46 46
IV.EVRN.HHZ. 2021-04-30T01:58:15.96 0.3 undecidable manual S 241 0.0477 164 0.14 74
IV.AIO.HHZ. 2021-04-30T01:58:15.43 0.1 undecidable manual P 8 0.2608 117 -0.05 96
IV.ENIC.HHZ. 2021-04-30T01:58:14.62 0.3 undecidable manual P 239 0.1547 134 0.62 63
IV.ECTS.HHZ. 2021-04-30T01:58:14.01 0.1 undecidable manual P 343 0.1781 130 -0.28 93
IV.EMNR.HHZ. 2021-04-30T01:58:14.18 0.3 undecidable manual P 309 0.1655 132 0.05 74
IV.EVRN.HHZ. 2021-04-30T01:58:13.10 0.1 undecidable manual P 241 0.0477 164 0.07 100
IV.EPOZ.HNZ. 2021-04-30T01:58:13.34 0.1 undecidable manual P 180 0.0405 166 0.34 95
IV.EFIU.HHZ. 2021-04-30T01:58:13.03 0.1 undecidable manual P 13 0.0791 154 -0.19 97
IV.EPIT.HHZ. 2021-04-30T01:58:13.94 0.1 undecidable manual P 314 0.1439 137 0.08 99
IV.ECBD.HHZ. 2021-04-30T01:58:13.35 0.1 undecidable manual P 310 0.1052 146 -0.1 99
IV.ESPC.HHZ. 2021-04-30T01:58:13.38 0.1 undecidable manual P 261 0.1286 140 -0.31 95
IV.EMCN.HHZ. 2021-04-30T01:58:13.82 0.3 undecidable manual P 303 0.1457 136 -0.06 74
IV.ESAL.HHZ. 2021-04-30T01:58:13.00 0.1 undecidable manual P 315 0.0603 159 -0.1 100
IV.EMFO.HHZ. 2021-04-30T01:58:12.83 0.1 undecidable manual P 287 0.0809 153 -0.41 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:2.2 0.001273738 0.2192 AML other m 2021-04-30T01:58:15.00
IV.ESAL.HHE. ML:2.5 0.002591563 0.24 AML other m 2021-04-30T01:58:16.40
IV.EFIU.HHE. ML:1.9 0.0006273801 0.36 AML other m 2021-04-30T01:58:16.66
IV.EFIU.HHN. ML:2.1 0.0010178971 0.4208 AML other m 2021-04-30T01:58:16.79
IV.ECTS.HHN. ML:2.2 0.0008571268 0.3808 AML other m 2021-04-30T01:58:18.05
IV.ECTS.HHE. ML:2.6 0.002005524 0.32 AML other m 2021-04-30T01:58:18.08
IV.EPIT.HHN. ML:2.4 0.001592206 0.3392 AML other m 2021-04-30T01:58:19.34
IV.EPIT.HHE. ML:2.3 0.0011484765 0.2608 AML other m 2021-04-30T01:58:20.84
IV.AIO.HHE. ML:1.9 0.0003205568 0.1984 AML other m 2021-04-30T01:58:21.57
IV.AIO.HHN. ML:1.7 0.0002016354 0.3792 AML other m 2021-04-30T01:58:22.09
IV.HLNI.HHN. ML:1.3 4.585E-5 1.04 AML other m 2021-04-30T01:58:26.09
IV.HLNI.HHE. ML:1.3 4.74E-5 1.16 AML other m 2021-04-30T01:58:27.75
IV.HAVL.HHE. ML:2.2 0.000195 0.26 AML other m 2021-04-30T01:58:37.03
IV.HAVL.HHN. ML:2.2 0.0001955 0.44 AML other m 2021-04-30T01:58:41.50
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