Earthquake with magnitude of ML 1.1 on date 17-02-2021 and time 01:16:21 (Italy) in region 4 km SW Bisegna (AQ)

A magnitude ML 1.1 earthquake occured in region: 4 km SW Bisegna (AQ), on

  • 17-02-2021 00:16:21 (UTC)
  • 17-02-2021 01:16:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8970, 13.7280 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bisegna AQ 4 223 223
Lecce nei Marsi AQ 5 1702 1925
Gioia dei Marsi AQ 7 1989 3914
Villavallelonga AQ 9 919 4833
Ortucchio AQ 9 1860 6693
Villalago AQ 10 568 7261
Pescasseroli AQ 11 2203 9464
Ortona dei Marsi AQ 11 542 10006
Collelongo AQ 12 1233 11239
Anversa degli Abruzzi AQ 13 341 11580
Scanno AQ 13 1847 13427
San Benedetto dei Marsi AQ 15 3909 17336
Pescina AQ 15 4133 21469
Opi AQ 16 420 21889
Cocullo AQ 16 230 22119
Trasacco AQ 17 6246 28365
Balsorano AQ 17 3569 31934
Pescosolido FR 17 1555 33489
Bugnara AQ 18 1125 34614
Campoli Appennino FR 18 1725 36339
San Vincenzo Valle Roveto AQ 18 2347 38686
Introdacqua AQ 19 2126 40812
Prezza AQ 20 945 41757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km SE of L'Aquila (69753 inhabitants)
62 Km SW of Chieti (51815 inhabitants)
75 Km SW of Pescara (121014 inhabitants)
77 Km SW of Montesilvano (53738 inhabitants)
77 Km E of Tivoli (56533 inhabitants)
82 Km E of Velletri (53303 inhabitants)
83 Km NE of Latina (125985 inhabitants)
84 Km E of Guidonia Montecelio (88673 inhabitants)
85 Km S of Teramo (54892 inhabitants)
96 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 1.1 2021-02-17
00:16:21
41.8973 13.7277 14 2021-07-12
16:54:59
Bollettino Sismico Italiano INGV 87276611
Reviewed
Rev100
ML 1.1 2021-02-17
00:16:21
41.8962 13.7252 13 2021-02-17
00:27:46
Sala Sismica INGV-Roma 87223371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 00:16:21 ± 0.13
Latitude 41.8973 ± 0.0045
Longitude 13.7277 ± 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 87276611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 96
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38311
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 87223371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 00:27:46

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 87276611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-19 07:57:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERA.HNE. 2021-02-17T00:16:35.48 0.1 undecidable manual S 144 41.0256 96 0.15 91
IV.FAGN.HHN. 2021-02-17T00:16:35.85 0.6 undecidable manual S 344 42.5241 95 0.12 47
IV.T0110.HHZ. 2021-02-17T00:16:34.77 0.6 undecidable manual S 6 37.0296 96 0.5 43
IV.PTQR.HHN. 2021-02-17T00:16:32.64 0.1 undecidable manual S 297 30.3474 99 0.15 96
IT.SULP.HGE. 2021-02-17T00:16:31.37 0.1 undecidable manual S 38 26.5512 101 -0.13 96
IV.FAGN.HHN. 2021-02-17T00:16:30.71 0.1 undecidable manual P 344 42.5241 95 0.83 75
IV.INTR.HHZ. 2021-02-17T00:16:29.49 0.1 undecidable manual S 49 19.3695 109 -0.15 96
IV.T0110.HHZ. 2021-02-17T00:16:29.05 0.1 undecidable manual P 6 37.0296 96 0.01 96
IV.POFI.HHE. 2021-02-17T00:16:29.89 0.1 undecidable manual S 184 19.9689 108 0.08 97
IV.CERA.HNE. 2021-02-17T00:16:29.49 0.1 undecidable manual P 144 41.0256 96 -0.16 93
IT.OPI.HGE. 2021-02-17T00:16:29.05 0.1 undecidable manual S 148 15.873 117 0.26 94
IV.PTQR.HHN. 2021-02-17T00:16:27.63 0.1 undecidable manual P 297 30.3474 99 -0.38 89
IV.LRP.EHE. 2021-02-17T00:16:27.73 0.1 undecidable manual P 203 30.1476 99 -0.25 92
IV.VVLD.HHZ. 2021-02-17T00:16:27.12 0.1 undecidable manual S 250 9.1797 138 -0.23 94
IT.SULP.HGE. 2021-02-17T00:16:26.75 0.1 undecidable manual P 38 26.5512 101 -0.69 82
IV.INTR.HHZ. 2021-02-17T00:16:26.35 0.1 undecidable manual P 49 19.3695 109 -0.01 99
IV.POFI.HHE. 2021-02-17T00:16:26.50 0.1 undecidable manual P 184 19.9689 108 0.04 98
IV.VVLD.HHZ. 2021-02-17T00:16:25.06 0.1 negative manual P 250 9.1797 138 0.02 100
IT.OPI.HGE. 2021-02-17T00:16:25.99 0.1 undecidable manual P 148 15.873 117 0.12 97
IV.BSSO.HNZ. 2021-02-17T00:16:22.11 3.0 undecidable manual P 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:1.0 0.00010899999999999999 0.38 AML other m 2021-02-17T00:16:27.32
IV.VVLD.HHE. ML:1.3 0.0002 0.22 AML other m 2021-02-17T00:16:27.37
IV.VVLD.HNE. ML:1.0 0.00011317905 0.12 AML other m 2021-02-17T00:16:27.37
IV.VVLD.HNN. ML:1.1 0.0001466477 0.45 AML other m 2021-02-17T00:16:29.33
IV.INTR.HNN. ML:1.4 0.0001814555 1.01 AML other m 2021-02-17T00:16:29.41
IV.INTR.HNE. ML:1.2 0.00011861887 0.83 AML other m 2021-02-17T00:16:30.48
IV.INTR.HHE. ML:1.1 0.00008085 0.98 AML other m 2021-02-17T00:16:30.85
IV.INTR.HHN. ML:1.2 0.00010020000000000001 0.12 AML other m 2021-02-17T00:16:30.48
IV.T0110.HHN. ML:0.7 0.000020059323499999997 0.6 AML other m 2021-02-17T00:16:34.89
IV.T0110.HHE. ML:0.8 0.000025816714 0.16 AML other m 2021-02-17T00:16:36.54
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