Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 20-02-2021 and time 00:52:43 (UTC) in region 3 km SE Lecce nei Marsi (AQ)

A magnitude ML 1.9 earthquake occured in region: 3 km SE Lecce nei Marsi (AQ), on

  • 20-02-2021 00:52:43 (UTC)
  • 20-02-2021 01:52:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.9070, 13.7080 at 15 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 3 1702 1702
Bisegna AQ 5 223 1925
Gioia dei Marsi AQ 6 1989 3914
Ortucchio AQ 8 1860 5774
Villavallelonga AQ 8 919 6693
Collelongo AQ 10 1233 7926
Ortona dei Marsi AQ 10 542 8468
Villalago AQ 11 568 9036
Anversa degli Abruzzi AQ 13 341 9377
Pescasseroli AQ 13 2203 11580
San Benedetto dei Marsi AQ 13 3909 15489
Pescina AQ 14 4133 19622
Scanno AQ 14 1847 21469
Trasacco AQ 15 6246 27715
Cocullo AQ 15 230 27945
Balsorano AQ 16 3569 31514
San Vincenzo Valle Roveto AQ 17 2347 33861
Opi AQ 17 420 34281
Pescosolido FR 18 1555 35836
Bugnara AQ 18 1125 36961
Collarmele AQ 19 894 37855
Campoli Appennino FR 19 1725 39580
Introdacqua AQ 20 2126 41706
Civita d'Antino AQ 20 979 42685
Cerchio AQ 20 1635 44320
Prezza AQ 20 945 45265

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km SE of L'Aquila (69753 inhabitants)
62 Km SW of Chieti (51815 inhabitants)
75 Km SW of Pescara (121014 inhabitants)
75 Km E of Tivoli (56533 inhabitants)
77 Km SW of Montesilvano (53738 inhabitants)
81 Km E of Velletri (53303 inhabitants)
82 Km E of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Latina (125985 inhabitants)
84 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 1.9 2021-02-20
00:52:43		 41.9068 13.7078 15 2021-07-12
16:55:15		 Bollettino Sismico Italiano INGV 91304771
Reviewed
Rev100 		ML 1.9 2021-02-20
00:52:43		 41.9028 13.7152 15 2021-02-20
01:00:08		 Sala Sismica INGV-Roma 87310141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-20 00:52:43 ± 0.06
Latitude 41.9068 ± 0.0027
Longitude 13.7078 ± 0.0036
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91304771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 32
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.75273
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 91304771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-16 11:10:22

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 87310141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-20 01:00:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHN. 2021-02-20T00:53:01.76 0.3 undecidable manual S 11 55.2003 95 0.82 57
IV.GIUL.HHZ. 2021-02-20T00:53:00.60 0.6 undecidable manual S 224 53.9016 95 0.01 47
IV.MIDA.HHZ. 2021-02-20T00:53:00.63 0.6 undecidable manual S 123 53.9016 95 0.03 47
IV.MCI.EHE. 2021-02-20T00:52:59.33 0.6 undecidable manual S 169 46.9197 96 0.58 41
IV.BSSO.HNZ. 2021-02-20T00:52:59.04 0.6 undecidable manual P 118 83.5497 93 1.02 32
IV.RNI2.HHZ. 2021-02-20T00:52:58.35 0.3 undecidable manual S 121 43.1235 97 0.61 62
IV.FAGN.HHZ. 2021-02-20T00:52:57.20 0.6 undecidable manual S 346 41.1255 98 0 48
IV.TERO.HHZ. 2021-02-20T00:52:57.56 0.3 undecidable manual P 354 79.8645 93 0.11 66
IV.LPEL.HHZ. 2021-02-20T00:52:57.00 0.1 undecidable manual S 68 42.1245 97 -0.48 86
IV.CERA.HHZ. 2021-02-20T00:52:57.50 0.6 undecidable manual S 143 42.8238 97 -0.16 47
IV.T0110.HHZ. 2021-02-20T00:52:56.00 0.6 undecidable manual S 9 36.2415 99 0.09 48
IV.TRIV.HHZ. 2021-02-20T00:52:56.20 0.3 undecidable manual P 102 71.373 94 0.06 68
IV.GUAR.HHZ. 2021-02-20T00:52:55.30 0.6 undecidable manual S 249 34.9428 100 -0.28 46
IV.VAGA.HHZ. 2021-02-20T00:52:55.89 0.3 undecidable manual P 141 69.7746 94 -0.01 69
IV.PTQR.HHZ. 2021-02-20T00:52:54.10 0.6 undecidable manual S 297 28.3494 103 0.24 47
IV.RCAV.EHZ. 2021-02-20T00:52:54.64 0.3 undecidable manual P 264 63.2922 94 -0.27 66
IV.LRP.EHZ. 2021-02-20T00:52:54.40 0.6 undecidable manual S 199 30.5472 102 -0.01 49
IV.MIDA.HHZ. 2021-02-20T00:52:53.19 0.1 undecidable manual P 123 53.9016 95 -0.27 89
IT.SULP.HGZ. 2021-02-20T00:52:53.50 0.6 undecidable manual S 42 26.8509 104 0.05 49
IV.VCEL.EHN. 2021-02-20T00:52:53.76 0.1 positive manual P 11 55.2003 95 0.1 93
IV.GIUL.HHZ. 2021-02-20T00:52:53.41 0.1 positive manual P 224 53.9016 95 -0.04 94
IV.RNI2.HHZ. 2021-02-20T00:52:52.10 0.1 positive manual P 121 43.1235 97 0.29 90
IV.LIK.EHN. 2021-02-20T00:52:52.32 0.3 undecidable manual P 195 46.8198 96 -0.05 71
IV.MCI.EHE. 2021-02-20T00:52:52.39 0.6 undecidable manual P 169 46.9197 96 0 47
IV.INTR.HHZ. 2021-02-20T00:52:51.40 0.6 undecidable manual S 54 19.9689 113 -0.31 46
IV.LPEL.HHZ. 2021-02-20T00:52:51.33 0.1 positive manual P 68 42.1245 97 -0.33 89
IV.CERA.HHZ. 2021-02-20T00:52:51.48 0.1 negative manual P 143 42.8238 97 -0.28 91
IT.OPI.HGZ. 2021-02-20T00:52:51.10 0.6 undecidable manual S 145 17.6712 117 -0.06 50
IV.POFI.HHZ. 2021-02-20T00:52:51.60 0.6 undecidable manual S 179 20.9679 111 -0.37 47
IV.FAGN.HHZ. 2021-02-20T00:52:51.35 0.1 positive manual P 346 41.1255 98 -0.15 93
IV.T0110.HHZ. 2021-02-20T00:52:50.69 0.1 positive manual P 9 36.2415 99 -0.06 95
IV.GUAR.HHZ. 2021-02-20T00:52:50.58 0.1 undecidable manual P 249 34.9428 100 0.02 97
IT.SULP.HGZ. 2021-02-20T00:52:49.30 0.1 negative manual P 42 26.8509 104 -0.03 98
IT.SULA.HNN. 2021-02-20T00:52:49.07 0.1 positive manual P 43 25.2525 106 -0.03 98
IV.LRP.EHZ. 2021-02-20T00:52:49.86 0.1 positive manual P 199 30.5472 102 -0.03 98
IV.PTQR.HHZ. 2021-02-20T00:52:49.71 0.1 negative manual P 297 28.3494 103 0.14 96
IV.VVLD.HHZ. 2021-02-20T00:52:49.10 0.6 undecidable manual S 239 8.0808 145 -0.11 50
IT.OPI.HGZ. 2021-02-20T00:52:48.01 0.1 positive manual P 145 17.6712 117 0 100
IV.POFI.HHZ. 2021-02-20T00:52:48.45 0.1 positive manual P 179 20.9679 111 -0.03 100
IT.SULC.HNZ. 2021-02-20T00:52:48.93 0.1 undecidable manual P 43 24.3534 107 -0.04 98
IV.INTR.HHZ. 2021-02-20T00:52:48.35 0.1 positive manual P 54 19.9689 113 0.02 100
IV.VVLD.HHZ. 2021-02-20T00:52:47.08 0.1 negative manual P 239 8.0808 145 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HNN. ML:2.2 0.00188 0.26 AML other m 2021-02-20T00:52:49.35
IV.VVLD.HHN. ML:2.3 0.002 0.26 AML other m 2021-02-20T00:52:49.35
IV.VVLD.HHE. ML:2.1 0.001435 0.5 AML other m 2021-02-20T00:52:49.36
IV.VVLD.HNE. ML:2.1 0.001365 0.5 AML other m 2021-02-20T00:52:49.62
IV.INTR.HHE. ML:2.1 0.0008085 1.14 AML other m 2021-02-20T00:52:52.30
IV.INTR.HNE. ML:2.1 0.0008085 1.12 AML other m 2021-02-20T00:52:52.30
IV.POFI.HHE. ML:1.4 0.00016499999999999997 0.5 AML other m 2021-02-20T00:52:52.21
IV.INTR.HHN. ML:2.2 0.0011695 0.94 AML other m 2021-02-20T00:52:52.48
IV.INTR.HNN. ML:2.2 0.001046 0.94 AML other m 2021-02-20T00:52:52.48
IV.POFI.HHN. ML:1.3 0.000134 0.56 AML other m 2021-02-20T00:52:53.68
IV.LRP.EHE. ML:2.1 0.0006020000000000001 0.22 AML other m 2021-02-20T00:52:54.83
IV.PTQR.HHN. ML:1.5 0.00014700000000000002 1.74 AML other m 2021-02-20T00:52:55.98
IV.LRP.EHN. ML:1.6 0.000195 0.64 AML other m 2021-02-20T00:52:55.75
IV.PTQR.HHE. ML:1.6 0.0002 0.6 AML other m 2021-02-20T00:52:55.96
IV.GUAR.HHE. ML:1.9 0.000336 0.24 AML other m 2021-02-20T00:52:56.85
IV.T0110.HHN. ML:2.1 0.00047750000000000006 0.68 AML other m 2021-02-20T00:52:57.00
IV.CERA.HHE. ML:1.9 0.00022200000000000003 0.2 AML other m 2021-02-20T00:52:57.80
IV.CERA.HNN. ML:1.7 0.000154 0.22 AML other m 2021-02-20T00:52:57.75
IV.GUAR.HHN. ML:2.1 0.0005095 0.24 AML other m 2021-02-20T00:52:58.12
IV.LPEL.HHE. ML:2.2 0.000502 0.6 AML other m 2021-02-20T00:52:58.59
IV.LPEL.HHN. ML:2.2 0.000459 0.18 AML other m 2021-02-20T00:52:59.14
IV.T0110.HHE. ML:2.1 0.000465 0.4 AML other m 2021-02-20T00:52:59.21
IV.RNI2.HHE. ML:2.1 0.0003755 1.08 AML other m 2021-02-20T00:53:00.07
IV.RNI2.HNE. ML:2.1 0.00034750000000000004 1.08 AML other m 2021-02-20T00:53:00.07
IV.RNI2.HHN. ML:2.0 0.000279 1.5 AML other m 2021-02-20T00:53:01.04
IV.RNI2.HNN. ML:1.9 0.00026700000000000004 1.8 AML other m 2021-02-20T00:53:01.04
IV.FAGN.HHE. ML:2.1 0.000399 0.56 AML other m 2021-02-20T00:53:01.36
IV.MIDA.HNE. ML:2.0 0.00026000000000000003 1.14 AML other m 2021-02-20T00:53:01.98
IV.CERA.HNE. ML:1.8 0.00021200000000000003 0.72 AML other m 2021-02-20T00:53:01.06
IV.MIDA.HHE. ML:2.0 0.00021150000000000002 0.22 AML other m 2021-02-20T00:53:01.53
IV.CERA.HHN. ML:1.8 0.00016999999999999999 0.62 AML other m 2021-02-20T00:53:01.51
IV.MIDA.HNN. ML:2.0 0.00021750000000000003 0.62 AML other m 2021-02-20T00:53:01.53
IV.FAGN.HHN. ML:2.1 0.000379 1.62 AML other m 2021-02-20T00:53:02.17
IV.MIDA.HHN. ML:2.1 0.00028300000000000005 0.94 AML other m 2021-02-20T00:53:02.86
IV.GIUL.HHE. ML:1.4 0.00006435 1.02 AML other m 2021-02-20T00:53:02.20
IV.GIUL.HHN. ML:1.6 0.00008679999999999998 0.34 AML other m 2021-02-20T00:53:03.70
IV.TERO.HHN. ML:1.4 0.000034099999999999995 1.72 AML other m 2021-02-20T00:53:09.87
IV.RCAV.EHE. ML:1.6 0.00007714999999999999 0.5 AML other m 2021-02-20T00:53:09.25
IV.TERO.HHE. ML:1.3 0.0000288 0.18 AML other m 2021-02-20T00:53:09.44
IV.RCAV.EHN. ML:1.6 0.00007135 0.42 AML other m 2021-02-20T00:53:09.56
IV.VAGA.HHN. ML:1.7 0.00007374999999999999 0.88 AML other m 2021-02-20T00:53:13.24
IV.VAGA.HHE. ML:1.3 0.0000293 0.24 AML other m 2021-02-20T00:53:13.29
IV.TRIV.HHE. ML:1.5 0.000051000000000000006 0.5 AML other m 2021-02-20T00:53:13.32
IV.TRIV.HHN. ML:1.6 0.00006365 1 AML other m 2021-02-20T00:53:14.21
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