Earthquake with magnitude of ML 1.7 on date 13-01-2021 and time 19:40:46 (Italy) in region 6 km N Sperlinga (EN)

A magnitude ML 1.7 earthquake occured in region: 6 km N Sperlinga (EN), on

  • 13-01-2021 18:40:46 (UTC)
  • 13-01-2021 19:40:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8140, 14.3350 at 7 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

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 9 1294 2099
Nicosia EN 9 13899 15998
Gangi PA 11 6811 22809
Capizzi ME 13 3176 25985
Mistretta ME 13 4791 30776
Cerami EN 15 2006 32782
Geraci Siculo PA 17 1945 34727
San Mauro Castelverde PA 17 1701 36428
Pettineo ME 18 1350 37778
Reitano ME 18 806 38584
Motta d'Affermo ME 19 739 39323
Petralia Soprana PA 20 3360 42683
Leonforte EN 20 13439 56122

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NE of Caltanissetta (63360 inhabitants)
75 Km W of Catania (314555 inhabitants)
77 Km W of Acireale (52622 inhabitants)
78 Km E of Bagheria (55387 inhabitants)
83 Km N of Gela (75827 inhabitants)
87 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 1.7 2021-01-13
18:40:46
37.814 14.3347 7 2021-07-12
16:54:58
Bollettino Sismico Italiano INGV 86966931
Reviewed
Rev100
ML 1.9 2021-01-13
18:40:46
37.8093 14.3362 8 2021-01-13
18:58:44
Sala Sismica INGV-Roma 86231621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-13 18:40:46 ± 0.08
Latitude 37.8140 ± 0.0054
Longitude 14.3347 ± 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 86966931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 2
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.17447
Epicentral distance of station farthest from the epicenter (degree) 0.48294
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 86966931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-04 10:00:55

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86231621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-13 18:58:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2021-01-13T18:41:04.25 0.3 undecidable manual S 62 53.6019 50 0.52 65
IV.SCIAR.HHZ. 2021-01-13T18:41:03.05 0.6 undecidable manual S 286 53.1024 50 -0.56 42
IV.MSFR.HHZ. 2021-01-13T18:40:57.91 0.6 undecidable manual S 43 33.1446 102 0.11 49
IV.RESU.HHE. 2021-01-13T18:40:57.11 0.6 undecidable manual S 233 30.6471 103 0.18 48
IV.SCIAR.HHZ. 2021-01-13T18:40:56.14 0.3 undecidable manual P 286 53.1024 50 -0.04 72
IV.MUCR.HHZ. 2021-01-13T18:40:56.13 0.1 undecidable manual P 62 53.6019 50 -0.12 94
IV.CSLB.HHZ. 2021-01-13T18:40:55.41 0.6 undecidable manual S 300 27.8499 104 -0.58 44
IV.PLLN.EHE. 2021-01-13T18:40:55.52 0.6 undecidable manual S 320 25.9518 105 0.17 49
IV.GALF.HHZ. 2021-01-13T18:40:54.13 0.6 undecidable manual S 119 23.3544 106 -0.35 47
IV.PETRA.HHE. 2021-01-13T18:40:53.43 0.6 undecidable manual S 276 19.3695 110 0.25 49
IV.GIB.HHE. 2021-01-13T18:40:52.62 0.3 undecidable manual P 306 33.3444 102 -0.24 71
IV.RESU.HHE. 2021-01-13T18:40:52.73 0.3 undecidable manual P 233 30.6471 103 0.4 69
IV.MSFR.HHZ. 2021-01-13T18:40:52.83 0.1 undecidable manual P 43 33.1446 102 0 100
IV.CAGR.HHZ. 2021-01-13T18:40:51.60 0.3 undecidable manual P 146 25.752 105 0.22 73
IV.CSLB.HHZ. 2021-01-13T18:40:51.66 0.3 undecidable manual P 300 27.8499 104 -0.13 74
IV.PLLN.EHE. 2021-01-13T18:40:51.72 0.3 undecidable manual P 320 25.9518 105 0.3 71
IV.GALF.HHZ. 2021-01-13T18:40:50.56 0.1 undecidable manual P 119 23.3544 106 -0.35 95
IV.PETRA.HHE. 2021-01-13T18:40:50.32 0.3 undecidable manual P 276 19.3695 110 0.16 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HNE. ML:1.3 0.0001195943 0.5888 AML other m 2021-01-13T18:40:55.97
IV.SCIAR.HNN. ML:1.9 0.00017759209999999997 0.7552 AML other m 2021-01-13T18:40:56.55
IV.GALF.HNN. ML:1.5 0.00018812134999999998 0.896 AML other m 2021-01-13T18:40:56.97
IV.MSFR.HHE. ML:1.4 0.000112220715 1.3056 AML other m 2021-01-13T18:40:57.15
IV.GALF.HHN. ML:2.2 0.001185 0.36 AML other m 2021-01-13T18:40:58.44
IV.CSLB.HHE. ML:1.1 0.00006303038 0.4352 AML other m 2021-01-13T18:40:58.84
IV.SCIAR.HNE. ML:1.8 0.0001686888 0.8192 AML other m 2021-01-13T18:40:59.60
IV.CSLB.HHN. ML:1.1 0.00007412311500000001 0.4864 AML other m 2021-01-13T18:40:59.80
IV.GALF.HHE. ML:2.2 0.000987 0.62 AML other m 2021-01-13T18:41:00.50
IV.CAGR.HHN. ML:1.8 0.0004129227 0.64 AML other m 2021-01-13T18:41:00.41
IV.CAGR.HHE. ML:2.0 0.000592 0.52 AML other m 2021-01-13T18:41:01.22
IV.MSFR.HHN. ML:1.4 0.000120317495 0.9856 AML other m 2021-01-13T18:41:05.63
IV.MUCR.HHE. ML:1.8 0.00014866205 0.3456 AML other m 2021-01-13T18:41:05.33
IV.MUCR.HHN. ML:1.8 0.00015215 0.32 AML other m 2021-01-13T18:41:05.54
IV.SCIAR.HHN. ML:1.8 0.00014119185 0.9472 AML other m 2021-01-13T18:41:07.31
IV.SCIAR.HHE. ML:1.6 0.00010123766000000001 0.2944 AML other m 2021-01-13T18:41:10.83
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