Earthquake with magnitude of ML 1.8 on date 17-02-2021 and time 05:47:26 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude ML 1.8 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 17-02-2021 04:47:26 (UTC)
  • 17-02-2021 05:47:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.239, 15.682 at 23 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Siracusa (122291 inhabitants)
60 Km SE of Catania (314555 inhabitants)
62 Km SE of Acireale (52622 inhabitants)
91 Km E of Ragusa (73313 inhabitants)
92 Km E of Modica (54633 inhabitants)
97 Km S of Reggio di Calabria (183035 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 1.8 2021-02-17
04:47:26
37.2387 15.6815 23 2021-07-12
16:54:59
Bollettino Sismico Italiano INGV 87297761
Reviewed
Rev100
ML 1.9 2021-02-17
04:47:26
37.2415 15.6858 10 2021-02-17
04:58:45
Sala Sismica INGV-Roma 87229521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 04:47:26 ± 0.12
Latitude 37.2387 ± 0.0072
Longitude 15.6815 ± 0.0090
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87297761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 865
Semi-minor axis of confidence ellipse (meter) 641
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 219
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.3939
Epicentral distance of station farthest from the epicenter (degree) 1.03512
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 87297761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-09 08:45:05

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 87229521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 04:58:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HVZN.HHZ. 2021-02-17T04:47:51.93 0.3 undecidable manual S 266 0.7716 99 0.01 74
IV.HMDC.HHZ. 2021-02-17T04:47:51.44 0.3 undecidable manual S 249 0.7689 99 -0.4 69
IV.HLNI.HHZ. 2021-02-17T04:47:48.19 0.3 undecidable manual S 280 0.6529 101 -0.28 73
MN.CEL.HNZ. 2021-02-17T04:47:45.39 0.6 undecidable manual P 9 1.0351 97 -0.18 45
IV.MSRU.HHE. 2021-02-17T04:47:45.40 0.1 undecidable manual P 352 1.0333 97 -0.15 90
IV.HAVL.HHZ. 2021-02-17T04:47:44.76 0.3 undecidable manual S 238 0.5261 105 -0.04 78
IV.HCRL.HHZ. 2021-02-17T04:47:44.80 0.3 undecidable manual S 275 0.518 105 0.23 74
IV.MPNC.HHN. 2021-02-17T04:47:44.26 0.3 undecidable manual P 344 0.9434 97 0.23 69
IV.ACATE.EHZ. 2021-02-17T04:47:43.98 1.0 undecidable manual P 258 0.965 97 -0.41 22
IV.NOV.HHZ. 2021-02-17T04:47:43.64 0.3 undecidable manual P 331 0.8984 98 0.38 67
IV.SSY.HHZ. 2021-02-17T04:47:43.92 0.3 undecidable manual S 261 0.491 106 0.13 76
IV.SOI.EHN. 2021-02-17T04:47:42.87 0.3 undecidable manual P 19 0.8849 98 -0.16 69
IV.HSRS.HNN. 2021-02-17T04:47:41.01 0.3 undecidable manual S 248 0.3939 110 -0.05 80
IV.AIO.HHE. 2021-02-17T04:47:41.63 0.1 undecidable manual P 334 0.8139 99 -0.19 94
IV.HVZN.HHZ. 2021-02-17T04:47:41.25 0.3 undecidable manual P 266 0.7716 99 0.14 72
IV.HAGA.HHZ. 2021-02-17T04:47:41.95 0.3 undecidable manual S 276 0.4218 109 0.12 78
IV.HMDC.HHZ. 2021-02-17T04:47:40.93 0.3 undecidable manual P 249 0.7689 99 -0.14 72
IV.HLNI.HHZ. 2021-02-17T04:47:39.04 0.1 undecidable manual P 280 0.6529 101 -0.08 100
IV.HAVL.HHZ. 2021-02-17T04:47:37.09 0.3 undecidable manual P 238 0.5261 105 0.09 77
IV.HCRL.HHZ. 2021-02-17T04:47:37.10 0.1 undecidable manual P 275 0.518 105 0.23 100
IV.SSY.HHZ. 2021-02-17T04:47:36.45 0.3 undecidable manual P 261 0.491 106 0.03 79
IV.HAGA.HHZ. 2021-02-17T04:47:35.42 0.3 undecidable manual P 276 0.4218 109 0.14 78
IV.HSRS.HNN. 2021-02-17T04:47:34.90 0.3 undecidable manual P 248 0.3939 110 0.06 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAGA.HHN. ML:1.7 0.0001345 1.24 AML other m 2021-02-17T04:47:42.28
IV.SSY.HHE. ML:2.1 0.00027055875 2.32 AML other m 2021-02-17T04:47:44.19
IV.HAGA.HHE. ML:1.7 0.000136 0.46 AML other m 2021-02-17T04:47:43.34
IV.HAVL.HHE. ML:1.5 6.046868E-5 0.6976 AML other m 2021-02-17T04:47:44.42
IV.SSY.HHN. ML:2.3 0.0004663369 0.5024 AML other m 2021-02-17T04:47:44.31
IV.HAVL.HHN. ML:1.9 0.00016359365 1.36 AML other m 2021-02-17T04:47:45.25
IV.HCRL.HHN. ML:1.5 6.1736695E-5 0.1984 AML other m 2021-02-17T04:47:45.08
IV.HCRL.HHE. ML:1.9 0.0001515 0.22 AML other m 2021-02-17T04:47:45.29
IV.HLNI.HHN. ML:1.8 9.5762965E-5 0.2816 AML other m 2021-02-17T04:47:48.43
IV.HMDC.HHN. ML:1.6 4.8577155E-5 2.4 AML other m 2021-02-17T04:47:52.18
IV.HMDC.HHE. ML:1.7 6.6693415E-5 1.6416 AML other m 2021-02-17T04:47:51.35
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