Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 19-02-2021 and time 04:30:25 (Italy) in region 4 km SW San Teodoro (ME)

A magnitude ML 1.0 earthquake occured in region: 4 km SW San Teodoro (ME), on

  • 19-02-2021 03:30:25 (UTC)
  • 19-02-2021 04:30:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8310, 14.6590 at 10 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
San Teodoro ME 4 1403 1403
Cesarò ME 5 2439 3842
Troina EN 7 9373 13215
Cerami EN 14 2006 15221
Maniace CT 14 3765 18986
Capizzi ME 16 3176 22162
Bronte CT 16 19172 41334
Gagliano Castelferrato EN 17 3593 44927
Maletto CT 18 3920 48847
Regalbuto EN 20 7277 56124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Acireale (52622 inhabitants)
52 Km NW of Catania (314555 inhabitants)
65 Km NE of Caltanissetta (63360 inhabitants)
88 Km W of Messina (238439 inhabitants)
92 Km W of Reggio di Calabria (183035 inhabitants)
92 Km NE of Gela (75827 inhabitants)
99 Km N 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 1.0 2021-02-19
03:30:25		 37.8313 14.6588 10 2021-07-12
16:55:04		 Bollettino Sismico Italiano INGV 88694361
Reviewed
Rev100 		ML 1.5 2021-02-19
03:30:25		 37.8343 14.6593 11 2021-02-19
03:37:02		 Sala Sismica INGV-Roma 87288841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-19 03:30:25 ± 0.1
Latitude 37.8313 ± 0.0072
Longitude 14.6588 ± 0.0080
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88694361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 654
Semi-minor axis of confidence ellipse (meter) 611
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.14119
Epicentral distance of station farthest from the epicenter (degree) 0.51081
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 88694361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-24 15:17:58

ML:1.5

Field Value
Value 1.5
Uncertainty 0.6
Num. used stations 12
Type of magnitude ML
Reference to an origin 87288841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-19 03:37:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHZ. 2021-02-19T03:30:42.66 0.6 undecidable manual S 73 52.6029 50 0.04 49
IV.HLNI.HHE. 2021-02-19T03:30:36.10 0.3 undecidable manual P 161 56.6988 50 -0.05 75
IV.CSLB.HHZ. 2021-02-19T03:30:36.20 0.6 undecidable manual P 283 53.9016 50 0.49 45
IV.AIO.HHZ. 2021-02-19T03:30:35.28 0.3 undecidable manual P 73 52.6029 50 -0.22 73
IV.PETRA.HHE. 2021-02-19T03:30:34.71 0.3 undecidable manual P 270 47.7189 50 -0.04 76
IV.MSFR.HHZ. 2021-02-19T03:30:34.57 0.6 undecidable manual S 345 23.2545 112 0.08 53
IV.NOV.HHZ. 2021-02-19T03:30:34.46 0.3 undecidable manual P 62 47.1195 50 -0.21 74
IV.ECTS.HHZ. 2021-02-19T03:30:33.82 0.6 undecidable manual P 82 40.8258 50 0.12 50
IV.EPZF.HHZ. 2021-02-19T03:30:33.10 0.3 undecidable manual S 93 17.3715 119 0.44 74
IV.ESCV.HHZ. 2021-02-19T03:30:32.15 0.6 undecidable manual S 124 16.5723 120 -0.27 50
IV.CAGR.HHE. 2021-02-19T03:30:32.40 0.3 undecidable manual P 211 27.0507 109 0.87 61
IV.GALF.HHZ. 2021-02-19T03:30:32.13 0.6 undecidable manual S 211 15.6732 121 0 53
IV.EMSG.HHZ. 2021-02-19T03:30:31.60 0.6 undecidable manual P 93 25.5522 110 0.36 49
IV.MUCR.HHZ. 2021-02-19T03:30:31.63 0.1 undecidable manual P 39 30.0477 50 -0.41 98
IV.EPZF.HHZ. 2021-02-19T03:30:30.13 0.1 undecidable manual P 93 17.3715 119 0.38 100
IV.MSFR.HHZ. 2021-02-19T03:30:30.78 0.3 undecidable manual P 345 23.2545 112 -0.03 78
IV.GALF.HHZ. 2021-02-19T03:30:29.06 0.1 positive manual P 211 15.6732 121 -0.39 98
IV.ESCV.HHZ. 2021-02-19T03:30:29.19 0.1 undecidable manual P 124 16.5723 120 -0.42 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HNN. ML:1.1 0.00013042569999999998 1.3392 AML other m 2021-02-19T03:30:31.62
IV.GALF.HNE. ML:0.5 0.00002837365 0.6704 AML other m 2021-02-19T03:30:33.01
IV.GALF.HHN. ML:1.2 0.0001348877 0.5808 AML other m 2021-02-19T03:30:32.88
IV.EPZF.HHN. ML:1.0 0.00009719404000000001 0.68 AML other m 2021-02-19T03:30:33.19
IV.ESCV.HHE. ML:1.2 0.00014455894999999998 0.28 AML other m 2021-02-19T03:30:33.34
IV.ESCV.HHN. ML:1.3 0.00016400868 0.3392 AML other m 2021-02-19T03:30:33.50
IV.GALF.HHE. ML:1.4 0.00022643734999999997 0.4 AML other m 2021-02-19T03:30:34.27
IV.EPZF.HHE. ML:1.3 0.000158 0.86 AML other m 2021-02-19T03:30:34.91
IV.MSFR.HHE. ML:0.7 0.0000291016 1.36 AML other m 2021-02-19T03:30:36.29
IV.MSFR.HHN. ML:0.5 0.000020383665 0.72 AML other m 2021-02-19T03:30:36.88
IV.MUCR.HHE. ML:0.9 0.00004035 0.46 AML other m 2021-02-19T03:30:38.32
IV.MUCR.HHN. ML:0.9 0.00003935 0.42 AML other m 2021-02-19T03:30:38.95
IV.AIO.HHN. ML:0.8 0.000014201478499999999 0.3808 AML other m 2021-02-19T03:30:43.40
IV.AIO.HHE. ML:0.9 0.000020171584999999997 0.3808 AML other m 2021-02-19T03:30:44.09
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