Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-06-2021 and time 02:29:35 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude ML 1.6 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 28-06-2021 00:29:35 (UTC)
  • 28-06-2021 02:29:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.3470, 15.6870 at 27 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Siracusa (122291 inhabitants)
55 Km SE of Acireale (52622 inhabitants)
56 Km E of Catania (314555 inhabitants)
85 Km S of Reggio di Calabria (183035 inhabitants)
95 Km S of Messina (238439 inhabitants)
97 Km NE of Ragusa (73313 inhabitants)
98 Km NE of Modica (54633 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 1.6 2021-06-28
00:29:35		 37.3467 15.6872 27 2021-12-29
11:12:07		 Bollettino Sismico Italiano INGV 92031281
Reviewed
Rev100 		ML 1.6 2021-06-28
00:29:35		 37.3547 15.6672 5 2021-06-28
00:38:07		 Sala Sismica INGV-Roma 91981321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-28 00:29:35 ± 0.22
Latitude 37.3467 ± 0.0117
Longitude 15.6872 ± 0.0124
Depth (km) 27 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 92031281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1213
Semi-minor axis of confidence ellipse (meter) 905
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 311
Circular confidence region, given by single value of horizontal uncertainty (meter) 1210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 259
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.81748
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 92031281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-29 09:08:01

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 91981321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-28 00:38:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HNN. 2021-06-28T00:30:02.74 0.3 undecidable manual S 242 90.7425 101 -0.07 94
IV.HLNI.HHZ. 2021-06-28T00:29:57.77 0.6 undecidable manual S 270 71.8725 105 -0.12 65
IV.HAVL.HHZ. 2021-06-28T00:29:57.05 0.6 undecidable manual S 229 65.8896 106 0.7 55
IV.SSY.HHZ. 2021-06-28T00:29:54.45 0.6 undecidable manual S 249 58.0974 109 0.09 66
IV.HCRL.HHZ. 2021-06-28T00:29:54.65 0.6 undecidable manual S 263 58.1973 109 0.26 63
IV.HSRS.HNZ. 2021-06-28T00:29:52.42 0.6 undecidable manual S 236 49.8168 112 0.13 66
IV.HAGA.HHZ. 2021-06-28T00:29:51.57 0.6 undecidable manual S 262 47.4192 113 -0.14 67
IV.HMDC.HNN. 2021-06-28T00:29:51.36 1.0 undecidable manual P 242 90.7425 101 0 31
IV.AIO.HHE. 2021-06-28T00:29:50.00 0.3 undecidable manual P 330 79.9644 103 0.28 90
IV.HVZN.HNZ. 2021-06-28T00:29:50.72 0.6 undecidable manual P 258 87.7455 102 -0.19 62
IV.HLNI.HHZ. 2021-06-28T00:29:48.21 0.3 undecidable manual P 270 71.8725 105 -0.31 93
IV.HAVL.HHZ. 2021-06-28T00:29:47.64 0.3 undecidable manual P 229 65.8896 106 0.01 98
IV.SSY.HHZ. 2021-06-28T00:29:46.15 0.3 undecidable manual P 249 58.0974 109 -0.33 95
IV.HCRL.HHZ. 2021-06-28T00:29:46.65 0.3 undecidable manual P 263 58.1973 109 0.16 97
IV.HSRS.HNZ. 2021-06-28T00:29:45.37 0.3 undecidable manual P 236 49.8168 112 0.09 100
IV.HAGA.HHZ. 2021-06-28T00:29:44.75 0.3 undecidable manual P 262 47.4192 113 -0.2 99
IV.HPAC.HHZ. 2021-06-28T00:29:35.78 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHE. ML:1.2 0.000041247605 0.14 AML other m 2021-06-28T00:29:51.92
IV.HAGA.HHN. ML:1.3 0.0000475 0.08 AML other m 2021-06-28T00:29:52.15
IV.HCRL.HHE. ML:1.7 0.00010125000000000001 1.84 AML other m 2021-06-28T00:29:54.93
IV.SSY.HHN. ML:2.0 0.00018792304999999999 0.2 AML other m 2021-06-28T00:29:55.58
IV.SSY.HHE. ML:1.6 0.00008600448499999999 0.1 AML other m 2021-06-28T00:29:56.35
IV.HCRL.HHN. ML:1.4 0.000044399999999999995 1.34 AML other m 2021-06-28T00:29:57.08
IV.HAVL.HHE. ML:1.7 0.00007881769 0.18 AML other m 2021-06-28T00:29:57.62
IV.HAVL.HHN. ML:1.7 0.00007824123500000001 0.12 AML other m 2021-06-28T00:29:57.85
IV.HLNI.HHE. ML:1.8 0.00009494555999999999 0.2 AML other m 2021-06-28T00:29:57.94
IV.HLNI.HHN. ML:1.7 0.00008039484 1.72 AML other m 2021-06-28T00:29:58.96
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