Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 17-01-2021 and time 17:09:30 (UTC) in region 2 km W Mistretta (ME)

A magnitude ML 2.3 earthquake occured in region: 2 km W Mistretta (ME), on

  • 17-01-2021 17:09:30 (UTC)
  • 17-01-2021 18:09:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.9290, 14.3390 at 26 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
Mistretta ME 2 4791 4791
Reitano ME 5 806 5597
Castel di Lucio ME 5 1294 6891
Pettineo ME 6 1350 8241
Motta d'Affermo ME 7 739 8980
Santo Stefano di Camastra ME 10 4694 13674
Tusa ME 11 2925 16599
San Mauro Castelverde PA 13 1701 18300
Caronia ME 14 3364 21664
Capizzi ME 15 3176 24840
Geraci Siculo PA 18 1945 26785
Sperlinga EN 18 805 27590
Pollina PA 18 2974 30564
Gangi PA 19 6811 37375
Cerami EN 20 2006 39381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km NE of Caltanissetta (63360 inhabitants)
74 Km E of Bagheria (55387 inhabitants)
81 Km W of Acireale (52622 inhabitants)
81 Km NW of Catania (314555 inhabitants)
88 Km E of Palermo (674435 inhabitants)
96 Km NE of Agrigento (59770 inhabitants)
96 Km N of Gela (75827 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 2.3 2021-01-17
17:09:30		 37.929 14.3387 26 2021-07-12
16:54:56		 Bollettino Sismico Italiano INGV 86375861
Reviewed
Rev100 		ML 2.3 2021-01-17
17:09:30		 37.9173 14.3348 25 2021-01-17
17:18:08		 Sala Sismica INGV-Roma 86334131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-17 17:09:30 ± 0.15
Latitude 37.9290 ± 0.0090
Longitude 14.3387 ± 0.0091
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86375861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1047
Semi-minor axis of confidence ellipse (meter) 517
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.96587
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 86375861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 11:03:04

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 86334131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-17 17:18:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2021-01-17T17:10:51.76 3.0 undecidable manual Pn 4.81 0
IV.SAMA.EHZ. 2021-01-17T17:10:29.61 3.0 negative manual Pg 5.35 0
IV.SGG.HHZ. 2021-01-17T17:10:23.73 3.0 undecidable manual Pg 6.7 0
IV.PIPA.HHZ. 2021-01-17T17:10:11.57 3.0 undecidable manual Pg 4.54 0
IV.SSY.HHZ. 2021-01-17T17:10:01.07 0.3 undecidable manual S 143 107.2149 99 -0.39 60
IV.SCIAR.HHZ. 2021-01-17T17:09:47.27 0.3 undecidable manual S 272 51.6039 111 0.23 70
IV.SSY.HHZ. 2021-01-17T17:09:47.95 0.1 undecidable manual P 143 107.2149 99 -0.24 83
IV.MUCR.HHZ. 2021-01-17T17:09:46.31 0.6 undecidable manual S 75 48.5181 112 0.04 48
IV.MPNC.HHZ. 2021-01-17T17:09:45.98 0.1 undecidable manual P 74 91.8414 101 0.13 87
IV.ERC.EHZ. 2021-01-17T17:09:45.86 3.0 positive manual Pg 0.25 0
IV.MILZ.HHZ. 2021-01-17T17:09:44.85 0.3 undecidable manual P 64 86.6466 102 -0.22 65
IV.AIO.HHZ. 2021-01-17T17:09:43.94 0.1 undecidable manual P 86 78.366 103 0.12 89
IV.HLNI.HHZ. 2021-01-17T17:09:43.72 0.1 undecidable manual P 144 79.6647 103 -0.29 87
IV.GALF.HHZ. 2021-01-17T17:09:42.31 0.3 undecidable manual S 140 31.3464 124 0.07 75
IV.GIB.HHE. 2021-01-17T17:09:41.81 0.3 undecidable manual S 284 28.1496 128 0.26 72
IV.PETRA.HHZ. 2021-01-17T17:09:40.07 0.3 undecidable manual S 242 22.2555 135 -0.3 71
IV.CSLB.HHZ. 2021-01-17T17:09:40.40 0.6 undecidable manual S 272 24.5532 132 -0.41 46
IV.SCIAR.HHZ. 2021-01-17T17:09:40.09 0.1 undecidable manual P 272 51.6039 111 0.23 92
IV.PLLN.EHZ. 2021-01-17T17:09:39.64 0.3 undecidable manual S 292 18.4704 141 -0.05 76
IV.MUCR.HHZ. 2021-01-17T17:09:39.27 0.1 undecidable manual P 75 48.5181 112 -0.15 95
IV.EPZF.HHZ. 2021-01-17T17:09:39.85 0.3 undecidable manual P 104 46.8198 113 0.67 61
IV.CAGR.HHE. 2021-01-17T17:09:38.36 0.1 undecidable manual P 157 36.8298 120 0.55 88
IV.RESU.HHZ. 2021-01-17T17:09:38.82 0.1 undecidable manual P 218 39.9267 117 0.61 86
IV.GALF.HHZ. 2021-01-17T17:09:37.11 0.1 positive manual P 140 31.3464 124 0.02 100
IV.GIB.HHE. 2021-01-17T17:09:36.64 0.1 undecidable manual P 284 28.1496 128 -0.05 100
IV.PLLN.EHZ. 2021-01-17T17:09:35.41 0.1 undecidable manual P 292 18.4704 141 -0.21 98
IV.PETRA.HHZ. 2021-01-17T17:09:35.60 0.3 undecidable manual P 242 22.2555 135 -0.41 70
IV.CSLB.HHZ. 2021-01-17T17:09:35.87 0.1 undecidable manual P 272 24.5532 132 -0.39 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.4 0.001165 0.82 AML other m 2021-01-17T17:09:41.40
IV.PETRA.HHN. ML:2.4 0.00113 0.34 AML other m 2021-01-17T17:09:41.67
IV.GALF.HNN. ML:1.9 0.0003045 0.6 AML other m 2021-01-17T17:09:43.08
IV.GALF.HNE. ML:1.9 0.000275 1.4 AML other m 2021-01-17T17:09:43.02
IV.GALF.HHE. ML:2.8 0.0023499999999999997 1.46 AML other m 2021-01-17T17:09:43.75
IV.MUCR.HHN. ML:2.3 0.0004505 0.32 AML other m 2021-01-17T17:09:48.88
IV.MUCR.HHE. ML:2.3 0.00054 0.48 AML other m 2021-01-17T17:09:49.46
IV.GALF.HHN. ML:2.7 0.001655 0.38 AML other m 2021-01-17T17:09:49.61
IV.SCIAR.HHE. ML:2.1 0.0002915 1.34 AML other m 2021-01-17T17:09:50.87
IV.SCIAR.HNE. ML:2.2 0.0003775 1.34 AML other m 2021-01-17T17:09:50.88
IV.SCIAR.HNN. ML:2.1 0.0003015 0.84 AML other m 2021-01-17T17:09:51.17
IV.EPZF.HHE. ML:2.2 0.0004355 0.58 AML other m 2021-01-17T17:09:52.75
IV.SCIAR.HHN. ML:2.1 0.00026450000000000003 1.3 AML other m 2021-01-17T17:09:53.77
IV.EPZF.HHN. ML:2.3 0.000498 1.46 AML other m 2021-01-17T17:09:57.81
IV.AIO.HHE. ML:2.4 0.000357 0.5 AML other m 2021-01-17T17:09:59.49
IV.AIO.HHN. ML:2.2 0.0001975 1.18 AML other m 2021-01-17T17:10:00.14
IV.MPNC.HHE. ML:2.4 0.000247 0.42 AML other m 2021-01-17T17:10:04.57
IV.MPNC.HHN. ML:2.3 0.0002215 0.86 AML other m 2021-01-17T17:10:05.13
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
Waveforms Seismic signals in miniseed + resp format Download