Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 13-01-2021 and time 01:40:12 (Italy) in region 6 km N Sperlinga (EN)

A magnitude ML 1.3 earthquake occured in region: 6 km N Sperlinga (EN), on

  • 13-01-2021 00:40:12 (UTC)
  • 13-01-2021 01:40:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8180, 14.3460 at 6 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
Sperlinga EN 6 805 805
Castel di Lucio ME 8 1294 2099
Nicosia EN 9 13899 15998
Capizzi ME 12 3176 19174
Gangi PA 12 6811 25985
Mistretta ME 13 4791 30776
Cerami EN 14 2006 32782
Pettineo ME 17 1350 34132
San Mauro Castelverde PA 17 1701 35833
Reitano ME 17 806 36639
Geraci Siculo PA 17 1945 38584
Motta d'Affermo ME 19 739 39323

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NE of Caltanissetta (63360 inhabitants)
74 Km NW of Catania (314555 inhabitants)
76 Km W of Acireale (52622 inhabitants)
79 Km E of Bagheria (55387 inhabitants)
84 Km N of Gela (75827 inhabitants)
88 Km NE of Agrigento (59770 inhabitants)
92 Km E of Palermo (674435 inhabitants)
98 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 1.3 2021-01-13
00:40:12		 37.818 14.3455 7 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87630061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-13 00:40:12 ± 0.07
Latitude 37.8180 ± 0.0045
Longitude 14.3455 ± 0.0046
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87630061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
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) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.18256
Epicentral distance of station farthest from the epicenter (degree) 0.62773
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.6
Num. used stations 4
Type of magnitude ML
Reference to an origin 87630061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 17:59:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHE. 2021-01-13T00:40:30.63 0.6 undecidable manual S 61 52.503 50 0.2 62
IV.HLNI.HHE. 2021-01-13T00:40:25.72 0.3 undecidable manual P 138 69.6747 50 0.05 93
IV.RAFF.HHZ. 2021-01-13T00:40:25.33 0.6 undecidable manual P 179 66.0894 50 0.22 61
IV.MSFR.HHZ. 2021-01-13T00:40:24.14 0.6 undecidable manual S 42 32.2455 101 -0.18 65
IV.MUCR.HHE. 2021-01-13T00:40:23.10 0.3 undecidable manual P 61 52.503 50 0.07 96
IV.CSLB.HHZ. 2021-01-13T00:40:23.61 0.6 undecidable manual S 298 28.4493 103 0.56 59
IV.SCIAR.HHZ. 2021-01-13T00:40:22.79 0.3 undecidable manual P 285 53.9016 50 -0.45 88
IV.CAGR.HHE. 2021-01-13T00:40:22.08 0.6 undecidable manual S 148 25.6521 104 -0.01 68
IV.PLLN.EHZ. 2021-01-13T00:40:22.53 0.6 undecidable manual S 318 26.2515 104 0.23 65
IV.GALF.HHE. 2021-01-13T00:40:21.27 0.6 undecidable manual S 121 22.755 106 0.15 66
IV.PETRA.HHZ. 2021-01-13T00:40:20.15 0.6 undecidable manual S 275 20.2686 108 -0.16 67
IV.MSFR.HHZ. 2021-01-13T00:40:19.45 0.3 undecidable manual P 42 32.2455 101 -0.05 100
IV.RESU.HHZ. 2021-01-13T00:40:19.53 0.3 undecidable manual P 233 31.6461 102 0.14 98
IV.CAGR.HHE. 2021-01-13T00:40:18.47 0.3 undecidable manual P 148 25.6521 104 0.26 97
IV.CSLB.HHZ. 2021-01-13T00:40:18.37 0.3 undecidable manual P 298 28.4493 103 -0.4 94
IV.PLLN.EHZ. 2021-01-13T00:40:18.61 0.3 undecidable manual P 318 26.2515 104 0.28 96
IV.GALF.HHE. 2021-01-13T00:40:17.24 0.3 undecidable manual P 121 22.755 106 -0.42 94
IV.PETRA.HHZ. 2021-01-13T00:40:17.01 0.3 undecidable manual P 275 20.2686 108 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:1.8 0.00047099999999999996 0.56 AML other m 2021-01-13T00:40:25.96
IV.GALF.HHN. ML:1.9 0.000498 0.7 AML other m 2021-01-13T00:40:33.42
IV.CSLB.HHN. ML:0.9 0.0000423341045 0.48 AML other m 2021-01-13T00:40:26.57
IV.CSLB.HHE. ML:0.8 0.000030981505 0.5 AML other m 2021-01-13T00:40:34.11
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