Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 17-02-2021 and time 00:51:42 (Italy) in region 4 km SE Lecce nei Marsi (AQ)

A magnitude ML 0.9 earthquake occured in region: 4 km SE Lecce nei Marsi (AQ), on

  • 16-02-2021 23:51:42 (UTC)
  • 17-02-2021 00:51:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8970, 13.7110 at 14 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
Lecce nei Marsi AQ 5 1702 1702
Bisegna AQ 5 223 1925
Gioia dei Marsi AQ 7 1989 3914
Villavallelonga AQ 8 919 4833
Ortucchio AQ 8 1860 6693
Collelongo AQ 11 1233 7926
Villalago AQ 11 568 8494
Ortona dei Marsi AQ 11 542 9036
Pescasseroli AQ 12 2203 11239
Anversa degli Abruzzi AQ 13 341 11580
San Benedetto dei Marsi AQ 14 3909 15489
Scanno AQ 14 1847 17336
Pescina AQ 15 4133 21469
Trasacco AQ 16 6246 27715
Balsorano AQ 16 3569 31284
Cocullo AQ 16 230 31514
Opi AQ 16 420 31934
San Vincenzo Valle Roveto AQ 17 2347 34281
Pescosolido FR 17 1555 35836
Campoli Appennino FR 18 1725 37561
Bugnara AQ 19 1125 38686
Collarmele AQ 20 894 39580
Civita d'Antino AQ 20 979 40559
Introdacqua AQ 20 2126 42685

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km SE of L'Aquila (69753 inhabitants)
63 Km SW of Chieti (51815 inhabitants)
76 Km SW of Pescara (121014 inhabitants)
76 Km E of Tivoli (56533 inhabitants)
78 Km SW of Montesilvano (53738 inhabitants)
81 Km E of Velletri (53303 inhabitants)
82 Km E of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Latina (125985 inhabitants)
85 Km S of Teramo (54892 inhabitants)
94 Km E of Aprilia (73446 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 0.9 2021-02-16
23:51:42		 41.8973 13.7107 14 2021-07-12
16:55:02		 Bollettino Sismico Italiano INGV 88277701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-16 23:51:42 ± 0.1
Latitude 41.8973 ± 0.0045
Longitude 13.7107 ± 0.0072
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88277701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 546
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50632
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 88277701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-19 12:31:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHN. 2021-02-16T23:52:00.42 0.6 undecidable manual S 11 56.1993 94 0.83 36
IV.MIDA.HNZ. 2021-02-16T23:51:59.01 0.6 undecidable manual S 122 53.1024 94 0.23 44
IV.RNI2.HNE. 2021-02-16T23:51:57.15 0.6 undecidable manual S 120 42.4242 96 1.22 30
IV.CERA.HNN. 2021-02-16T23:51:55.75 0.6 undecidable manual S 142 41.8248 96 -0.03 47
IV.T0110.HHZ. 2021-02-16T23:51:55.05 0.6 undecidable manual S 8 37.2294 97 0.49 43
IV.VCEL.EHN. 2021-02-16T23:51:52.01 0.3 undecidable manual P 11 56.1993 94 -0.19 66
IV.PTQR.HHZ. 2021-02-16T23:51:52.71 0.6 undecidable manual S 298 29.0487 101 0.31 46
IV.LRP.EHZ. 2021-02-16T23:51:52.84 0.6 undecidable manual S 200 29.6481 100 0.3 46
IT.SULP.HGN. 2021-02-16T23:51:51.75 0.6 undecidable manual S 41 27.4503 102 -0.22 46
IV.MIDA.HNZ. 2021-02-16T23:51:51.30 0.1 undecidable manual P 122 53.1024 94 -0.44 85
IV.POFI.HNE. 2021-02-16T23:51:50.18 0.6 undecidable manual S 180 19.9689 110 0.13 48
IV.RNI2.HNE. 2021-02-16T23:51:50.42 0.3 undecidable manual P 120 42.4242 96 0.34 66
IV.T0110.HHZ. 2021-02-16T23:51:49.17 0.3 undecidable manual P 8 37.2294 97 -0.12 70
IV.INTR.HHZ. 2021-02-16T23:51:49.74 0.3 undecidable manual S 52 20.3685 109 -0.42 67
IV.CERA.HNN. 2021-02-16T23:51:49.68 0.3 undecidable manual P 142 41.8248 96 -0.32 66
IT.OPI.HGE. 2021-02-16T23:51:49.18 0.6 undecidable manual S 144 16.6722 116 -0.06 48
IV.LRP.EHZ. 2021-02-16T23:51:48.07 0.3 undecidable manual P 200 29.6481 100 -0.06 71
IV.VVLD.HHZ. 2021-02-16T23:51:47.34 0.3 undecidable manual S 247 7.881 144 -0.08 72
IT.SULP.HGN. 2021-02-16T23:51:47.98 0.3 undecidable manual P 41 27.4503 102 0.17 70
IV.PTQR.HHZ. 2021-02-16T23:51:47.92 0.3 undecidable manual P 298 29.0487 101 -0.13 70
IT.OPI.HGE. 2021-02-16T23:51:46.26 0.1 undecidable manual P 144 16.6722 116 0.03 98
IV.POFI.HNE. 2021-02-16T23:51:46.61 0.1 undecidable manual P 180 19.9689 110 -0.09 96
IV.INTR.HHZ. 2021-02-16T23:51:46.47 0.1 undecidable manual P 52 20.3685 109 -0.29 92
IV.VVLD.HHZ. 2021-02-16T23:51:45.24 0.1 undecidable manual P 247 7.881 144 0.06 100
IV.ASSB.HHZ. 2021-02-16T23:51:23.64 3.0 positive manual P -0.59 0
IV.TERO.HHZ. 2021-02-16T23:51:22.36 3.0 undecidable manual P -0.86 0
IV.RM33.EHE. 2021-02-16T23:51:22.07 3.0 undecidable manual S -0.36 0
IV.MOMA.HHZ. 2021-02-16T23:51:21.90 3.0 undecidable manual P -0.21 0
IV.MTRA.EHZ. 2021-02-16T23:51:20.25 3.0 positive manual P -0.59 0
IV.NRCA.HHE. 2021-02-16T23:51:20.00 3.0 positive manual P 0.89 0
IV.MMO1.EHZ. 2021-02-16T23:51:20.66 3.0 negative manual P -0.99 0
IV.ARRO.EHZ. 2021-02-16T23:51:19.04 3.0 negative manual P 0.17 0
IV.SMA1.EHZ. 2021-02-16T23:51:19.34 3.0 positive manual P -0.21 0
IV.RM33.EHZ. 2021-02-16T23:51:18.73 3.0 positive manual P -0.06 0
IV.GAVE.EHZ. 2021-02-16T23:51:17.32 3.0 positive manual P 0.01 0
IV.LNSS.HHZ. 2021-02-16T23:51:16.44 3.0 undecidable manual P 0.04 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:0.8 0.00006412222000000001 0.128 AML other m 2021-02-16T23:51:47.50
IV.VVLD.HHE. ML:0.7 0.0000564985255 0.1152 AML other m 2021-02-16T23:51:47.53
IV.INTR.HHN. ML:1.1 0.000072599635 0.1408 AML other m 2021-02-16T23:51:50.57
IV.INTR.HHE. ML:0.9 0.00005600513999999999 0.1664 AML other m 2021-02-16T23:51:50.32
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