Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 31-05-2020 and time 23:39:35 (Italy) in region 6 km W Milo (CT)

A magnitude ML 1.9 earthquake occured in region: 6 km W Milo (CT), on

  • 31-05-2020 21:39:35 (UTC)
  • 31-05-2020 23:39:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7480, 15.0550 at 9 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
Milo CT 6 1087 1087
Zafferana Etnea CT 7 9517 10604
Sant'Alfio CT 8 1582 12186
Santa Venerina CT 10 8592 20778
Giarre CT 12 27659 48437
Mascali CT 13 14282 62719
Piedimonte Etneo CT 13 3963 66682
Linguaglossa CT 13 5403 72085
Riposto CT 13 14838 86923
Pedara CT 14 14102 101025
Fiumefreddo di Sicilia CT 15 9623 110648
Trecastagni CT 15 10910 121558
Nicolosi CT 15 7463 129021
Viagrande CT 16 8563 137584
Castiglione di Sicilia CT 16 3215 140799
Ragalna CT 16 3924 144723
Moio Alcantara ME 17 717 145440
Aci Sant'Antonio CT 17 17984 163424
Aci Bonaccorsi CT 17 3524 166948
Randazzo CT 17 10900 177848
Calatabiano CT 18 5308 183156
Aci Catena CT 18 29851 213007
Acireale CT 18 52622 265629
Belpasso CT 19 28108 293737
Francavilla di Sicilia ME 19 3945 297682
Maletto CT 19 3920 301602
Malvagna ME 19 733 302335
Tremestieri Etneo CT 19 20589 322924
San Giovanni la Punta CT 19 23060 345984
Mascalucia CT 19 31958 377942
Gaggi ME 19 3184 381126
Motta Camastra ME 20 845 381971
San Pietro Clarenza CT 20 7743 389714
Valverde CT 20 7840 397554
Biancavilla CT 20 24007 421561

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
66 Km SW of Reggio di Calabria (183035 inhabitants)
66 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
100 Km NE of Vittoria (63339 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 2020-05-31
21:39:35		 37.7477 15.0547 9 2020-11-19
12:36:57		 Bollettino Sismico Italiano INGV 81774821
Reviewed
Rev200 		ML 1.4 2020-05-31
21:39:34		 37.743 15.048 3 2020-08-08
13:31:28		 Sala Operativa INGV_OE (Catania) 79761351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-31 21:39:35 ± 0.22
Latitude 37.7477 ± 0.0045
Longitude 15.0547 ± 0.0080
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 81774821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 739
Semi-minor axis of confidence ellipse (meter) 91
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.18976
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 81774821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-08 13:31:06

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 79761351
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-05-31 21:57:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2020-05-31T21:39:41.41 0.3 undecidable manual S 21 15.9729 119 -0.14 73
IV.ENIC.HHZ. 2020-05-31T21:39:40.66 0.3 undecidable manual S 193 13.1757 124 -0.07 75
IV.EPIT.HHN. 2020-05-31T21:39:39.66 0.3 undecidable manual S 2 7.0929 141 0.53 68
IV.ESLN.HHZ. 2020-05-31T21:39:39.27 0.1 undecidable manual S 229 9.2796 134 -0.37 94
IV.ESML.HHE. 2020-05-31T21:39:39.91 0.3 undecidable manual P 227 21.0678 113 0.12 73
IV.EVRN.HHZ. 2020-05-31T21:39:39.85 0.3 undecidable manual S 132 9.5793 132 0.11 75
IV.ENIC.HHZ. 2020-05-31T21:39:39.02 0.3 undecidable manual P 193 13.1757 124 0.63 65
IV.EPZF.HHZ. 2020-05-31T21:39:39.68 0.1 undecidable manual P 296 19.2696 115 0.22 96
IV.EMSG.HHZ. 2020-05-31T21:39:38.37 0.1 undecidable manual P 311 12.2766 126 0.13 99
IV.ECTS.HHZ. 2020-05-31T21:39:38.43 0.1 undecidable manual P 21 15.9729 119 -0.44 92
IV.ECHR.HHE. 2020-05-31T21:39:38.73 0.3 undecidable manual P 241 14.1747 122 0.17 73
IV.EMCN.HHZ. 2020-05-31T21:39:38.93 0.3 undecidable manual S 339 5.1948 150 0.18 74
IV.EPOZ.HHZ. 2020-05-31T21:39:38.87 0.1 undecidable manual P 126 14.4744 121 0.26 96
IV.EMCN.HHZ. 2020-05-31T21:39:37.01 0.1 undecidable manual P 339 5.1948 150 -0.25 97
IV.EPIT.HHN. 2020-05-31T21:39:37.37 0.1 undecidable manual P 2 7.0929 141 -0.1 100
IV.ESLN.HHZ. 2020-05-31T21:39:37.29 0.3 undecidable manual P 229 9.2796 134 -0.48 69
IV.EVRN.HHZ. 2020-05-31T21:39:37.58 0.1 undecidable manual P 132 9.5793 132 -0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:2.1 0.001685 0.6 AML other m 2020-05-31T21:39:39.36
IV.EMCN.HHE. ML:2.0 0.00199 1.06 AML other m 2020-05-31T21:39:39.13
IV.EMCN.HHN. ML:2.0 0.002085 0.36 AML other m 2020-05-31T21:39:39.32
IV.ESLN.HHN. ML:1.9 0.0010834999999999998 0.7 AML other m 2020-05-31T21:39:39.38
IV.EVRN.HHN. ML:2.0 0.001495 0.9 AML other m 2020-05-31T21:39:40.03
IV.EVRN.HNN. ML:2.0 0.0014 1.24 AML other m 2020-05-31T21:39:42.74
IV.EVRN.HNE. ML:2.0 0.001355 1.18 AML other m 2020-05-31T21:39:42.17
IV.EVRN.HHE. ML:2.0 0.0015249999999999999 0.28 AML other m 2020-05-31T21:39:43.18
IV.EPOZ.HNE. ML:1.7 0.0005235 1.16 AML other m 2020-05-31T21:39:43.69
IV.EPOZ.HNN. ML:1.7 0.000589 0.36 AML other m 2020-05-31T21:39:43.66
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