Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 21-09-2019 and time 12:26:14 (Italy) in region 9 km W Milo (CT)

A magnitude ML 1.7 earthquake occured in region: 9 km W Milo (CT), on

  • 21-09-2019 10:26:14 (UTC)
  • 21-09-2019 12:26:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7470, 15.0160 at 2 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 9 1087 1087
Zafferana Etnea CT 10 9517 10604
Sant'Alfio CT 11 1582 12186
Santa Venerina CT 13 8592 20778
Ragalna CT 15 3924 24702
Nicolosi CT 15 7463 32165
Pedara CT 15 14102 46267
Giarre CT 15 27659 73926
Trecastagni CT 15 10910 84836
Linguaglossa CT 16 5403 90239
Piedimonte Etneo CT 16 3963 94202
Mascali CT 16 14282 108484
Randazzo CT 16 10900 119384
Maletto CT 16 3920 123304
Viagrande CT 17 8563 131867
Riposto CT 17 14838 146705
Bronte CT 17 19172 165877
Biancavilla CT 17 24007 189884
Moio Alcantara ME 17 717 190601
Belpasso CT 18 28108 218709
Fiumefreddo di Sicilia CT 18 9623 228332
Castiglione di Sicilia CT 18 3215 231547
Santa Maria di Licodia CT 18 7641 239188
Aci Bonaccorsi CT 18 3524 242712
Aci Sant'Antonio CT 18 17984 260696
Adrano CT 19 36122 296818
San Pietro Clarenza CT 19 7743 304561
Santa Domenica Vittoria ME 19 980 305541
Malvagna ME 20 733 306274
Mascalucia CT 20 31958 338232
Aci Catena CT 20 29851 368083
Tremestieri Etneo CT 20 20589 388672
Camporotondo Etneo CT 20 5023 393695
San Giovanni la Punta CT 20 23060 416755
Acireale CT 20 52622 469377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
68 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
80 Km N of Siracusa (122291 inhabitants)
89 Km E of Caltanissetta (63360 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
98 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 1.7 2019-09-21
10:26:14		 37.747 15.0157 2 2020-02-28
16:42:00		 Bollettino Sismico Italiano INGV 73532771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-21 10:26:14 ± 0.18
Latitude 37.7470 ± 0.0054
Longitude 15.0157 ± 0.0102
Depth (km) 2 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73532771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 989
Semi-minor axis of confidence ellipse (meter) 136
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 295
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
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 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.41459
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 73532771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-03 10:50:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHE. 2019-09-21T10:26:23.96 1.0 undecidable manual P 196 46.0206 93 0.06 24
IV.GALF.HHZ. 2019-09-21T10:26:22.97 0.3 undecidable manual P 264 39.627 93 0.35 68
IV.MNO.SHZ. 2019-09-21T10:26:21.81 0.6 undecidable manual P 306 34.743 94 0.16 48
IV.NOV.HHZ. 2019-09-21T10:26:21.31 0.6 undecidable manual P 19 32.9448 94 0.03 49
IV.AIO.HHZ. 2019-09-21T10:26:21.08 0.3 undecidable manual P 37 31.3464 94 0.11 73
IV.MUCR.HHZ. 2019-09-21T10:26:21.67 0.3 undecidable manual P 339 35.1426 94 -0.05 73
IV.ESML.HHZ. 2019-09-21T10:26:18.97 0.3 undecidable manual P 220 18.6702 97 0.53 68
IV.ECTS.EHZ. 2019-09-21T10:26:18.21 0.3 undecidable manual P 32 17.5713 98 -0.02 76
IV.EMSG.HHZ. 2019-09-21T10:26:18.83 0.3 undecidable manual S 325 9.9789 103 0.58 67
IV.EPIT.HHN. 2019-09-21T10:26:18.74 0.6 undecidable manual S 27 7.9809 106 1.18 35
IV.EPZF.HHZ. 2019-09-21T10:26:17.61 0.1 positive manual P 302 16.3725 98 -0.37 94
IV.ENIC.HHE. 2019-09-21T10:26:17.72 0.6 undecidable manual P 178 12.876 100 0.43 47
IV.ESLN.HHZ. 2019-09-21T10:26:17.36 0.3 undecidable manual S 211 6.993 109 0.14 76
IV.EMSG.HHZ. 2019-09-21T10:26:16.36 0.1 negative manual P 325 9.9789 103 -0.38 95
IV.ECHR.HHE. 2019-09-21T10:26:16.59 0.6 undecidable manual P 233 11.2776 102 -0.39 47
IV.EMCN.HNZ. 2019-09-21T10:26:16.61 0.3 undecidable manual S 18 5.1948 115 -0.03 77
IV.EPIT.HHN. 2019-09-21T10:26:16.18 0.1 undecidable manual P 27 7.9809 106 -0.16 100
IV.EMCN.HNZ. 2019-09-21T10:26:15.38 0.1 positive manual P 18 5.1948 115 -0.43 95
IV.ESLN.HHZ. 2019-09-21T10:26:15.75 0.1 positive manual P 211 6.993 109 -0.4 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHE. ML:2.5 0.005807067 0.3648 AML other m 2019-09-21T10:26:19.67
IV.EMSG.HHN. ML:2.3 0.0038075580000000004 0.3456 AML other m 2019-09-21T10:26:20.47
IV.EPZF.HHN. ML:2.0 0.0012051940000000001 1.12 AML other m 2019-09-21T10:26:23.90
IV.ECTS.EHE. ML:1.5 0.00033566779999999994 0.32 AML other m 2019-09-21T10:26:25.45
IV.ECTS.EHN. ML:1.5 0.0003312118 0.4608 AML other m 2019-09-21T10:26:25.91
IV.ESML.HHN. ML:1.7 0.0005317980499999999 0.6592 AML other m 2019-09-21T10:26:27.63
IV.ESML.HHE. ML:1.7 0.0005373902 0.3008 AML other m 2019-09-21T10:26:28.32
IV.EPZF.HHE. ML:2.0 0.00097816555 0.416 AML other m 2019-09-21T10:26:28.40
IV.AIO.HHE. ML:1.3 0.00009040480000000001 0.48 AML other m 2019-09-21T10:26:31.18
IV.MUCR.HHN. ML:1.7 0.00022109984999999998 0.4992 AML other m 2019-09-21T10:26:32.05
IV.MNO.SHN. ML:0.0 0.00023443365 0.8 AML other m 2019-09-21T10:26:32.71
IV.AIO.HHN. ML:1.4 0.00011864856000000002 0.4032 AML other m 2019-09-21T10:26:32.72
IV.MNO.SHE. ML:0.0 0.0001997353 0.5632 AML other m 2019-09-21T10:26:33.71
IV.MUCR.HHE. ML:1.5 0.00012666197 0.4224 AML other m 2019-09-21T10:26:36.14
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