Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 08-02-2021 and time 02:08:23 (Italy) in region 5 km SW Villetta Barrea (AQ)

A magnitude ML 1.1 earthquake occured in region: 5 km SW Villetta Barrea (AQ), on

  • 08-02-2021 01:08:23 (UTC)
  • 08-02-2021 02:08:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7480, 13.8860 at 13 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
Villetta Barrea AQ 5 653 653
Civitella Alfedena AQ 5 296 949
Opi AQ 6 420 1369
San Donato Val di Comino FR 7 2107 3476
Barrea AQ 9 726 4202
Settefrati FR 9 728 4930
Pescasseroli AQ 11 2203 7133
Picinisco FR 11 1218 8351
Gallinaro FR 12 1269 9620
Alfedena AQ 12 864 10484
Scontrone AQ 13 574 11058
Alvito FR 14 2713 13771
San Biagio Saracinisco FR 15 349 14120
Pizzone IS 15 329 14449
Villa Latina FR 15 1241 15690
Montenero Val Cocchiara IS 15 538 16228
Atina FR 16 4316 20544
Vicalvi FR 17 783 21327
Posta Fibreno FR 17 1139 22466
Campoli Appennino FR 17 1725 24191
Scanno AQ 17 1847 26038
Castel San Vincenzo IS 18 516 26554
Castel di Sangro AQ 19 6538 33092
Pescosolido FR 19 1555 34647
Casalvieri FR 19 2698 37345
Casalattico FR 19 574 37919
Fontechiari FR 19 1303 39222
Roccaraso AQ 19 1627 40849
Belmonte Castello FR 20 739 41588

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km SW of Chieti (51815 inhabitants)
78 Km SE of L'Aquila (69753 inhabitants)
84 Km NW of Caserta (76326 inhabitants)
84 Km SW of Pescara (121014 inhabitants)
87 Km E of Latina (125985 inhabitants)
88 Km S of Montesilvano (53738 inhabitants)
90 Km NW of Aversa (53047 inhabitants)
92 Km E of Velletri (53303 inhabitants)
93 Km E of Tivoli (56533 inhabitants)
95 Km N of Giugliano in Campania (122974 inhabitants)
98 Km N of Marano di Napoli (59874 inhabitants)
98 Km NW of Acerra (59573 inhabitants)
98 Km NW of Afragola (65057 inhabitants)
100 Km NW of Casoria (77642 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 2021-02-08
01:08:23		 41.7482 13.8863 13 2021-07-12
16:54:57		 Bollettino Sismico Italiano INGV 86928841
Reviewed
Rev100 		ML 1.2 2021-02-08
01:08:23		 41.7522 13.899 13 2021-02-08
01:15:40		 Sala Sismica INGV-Roma 86919751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-08 01:08:23 ± 0.04
Latitude 41.7482 ± 0.0027
Longitude 13.8863 ± 0.0024
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86928841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 0
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 86928841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 09:11:51

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 86919751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-08 01:15:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2021-02-08T01:08:41.58 0.3 undecidable manual S 248 56.3991 92 0.13 69
IV.T0110.HHZ. 2021-02-08T01:08:40.95 0.6 undecidable manual S 350 54.1014 93 0.11 45
IV.PTQR.HHZ. 2021-02-08T01:08:39.66 0.3 undecidable manual S 307 50.3163 93 -0.15 70
IV.GUAR.HNN. 2021-02-08T01:08:39.21 0.6 undecidable manual S 276 47.8188 93 0.07 47
IV.VAGA.HHZ. 2021-02-08T01:08:38.86 0.6 undecidable manual S 142 46.8198 93 -0.03 47
IV.TST01.HHZ. 2021-02-08T01:08:37.56 0.6 undecidable manual S 90 41.4252 94 0.11 47
IV.LPEL.HNE. 2021-02-08T01:08:37.11 0.3 undecidable manual S 36 41.2254 94 -0.28 69
IT.SULP.HGN. 2021-02-08T01:08:36.66 0.6 undecidable manual S 5 37.5291 94 0.26 45
IT.SULA.HNN. 2021-02-08T01:08:36.10 1.0 undecidable manual S 4 36.1416 94 0.06 24
IV.MCI.EHZ. 2021-02-08T01:08:34.49 0.3 undecidable manual S 192 29.1486 96 0.31 71
IV.MIDA.HHZ. 2021-02-08T01:08:34.98 0.3 undecidable manual S 111 32.6451 95 -0.13 71
IV.GIUL.HHZ. 2021-02-08T01:08:34.08 0.1 undecidable manual P 248 56.3991 92 0.04 94
IV.INTR.HHZ. 2021-02-08T01:08:34.09 0.3 undecidable manual S 3 29.2485 96 -0.12 73
IV.VVLD.HHZ. 2021-02-08T01:08:33.08 0.3 undecidable manual S 302 25.5522 98 -0.16 73
IV.T0110.HHZ. 2021-02-08T01:08:33.61 0.1 undecidable manual P 350 54.1014 93 -0.08 94
IV.LRP.EHZ. 2021-02-08T01:08:33.74 0.3 undecidable manual S 246 27.2505 97 0.07 74
IV.GUAR.HNN. 2021-02-08T01:08:32.78 0.3 undecidable manual P 276 47.8188 93 0.08 70
IV.RNI2.HNZ. 2021-02-08T01:08:32.92 0.3 undecidable manual S 103 22.5552 100 0.48 68
IV.VAGA.HHZ. 2021-02-08T01:08:32.23 0.1 undecidable manual P 142 46.8198 93 -0.33 89
IV.PTQR.HHZ. 2021-02-08T01:08:32.82 0.1 undecidable manual P 307 50.3163 93 -0.28 90
IV.LPEL.HNE. 2021-02-08T01:08:31.49 0.1 undecidable manual P 36 41.2254 94 -0.2 93
IT.SULP.HGN. 2021-02-08T01:08:31.41 1.0 undecidable manual P 5 37.5291 94 0.28 23
IT.SULA.HNN. 2021-02-08T01:08:31.15 0.3 undecidable manual P 4 36.1416 94 0.23 69
IV.TST01.HHZ. 2021-02-08T01:08:31.79 0.6 undecidable manual P 90 41.4252 94 0.06 48
IV.CERA.HHZ. 2021-02-08T01:08:31.60 0.3 undecidable manual S 147 19.9689 103 -0.15 72
IV.POFI.HHZ. 2021-02-08T01:08:30.58 0.3 undecidable manual S 257 14.874 114 0.12 74
IV.MIDA.HHZ. 2021-02-08T01:08:30.15 0.1 undecidable manual P 111 32.6451 95 -0.23 93
IV.LRP.EHZ. 2021-02-08T01:08:29.56 0.1 undecidable manual P 246 27.2505 97 0.01 99
IV.INTR.HHZ. 2021-02-08T01:08:29.67 0.1 positive manual P 3 29.2485 96 -0.19 96
IV.RNI2.HNZ. 2021-02-08T01:08:29.29 0.1 negative manual P 103 22.5552 100 0.45 91
IV.MCI.EHZ. 2021-02-08T01:08:29.87 0.1 undecidable manual P 192 29.1486 96 0.03 98
IV.VVLD.HHZ. 2021-02-08T01:08:29.23 0.1 positive manual P 302 25.5522 98 -0.07 99
IV.CERA.HHZ. 2021-02-08T01:08:28.27 0.1 positive manual P 147 19.9689 103 -0.17 96
IT.OPI.HGZ. 2021-02-08T01:08:28.53 0.3 undecidable manual S 304 5.5944 150 -0.09 76
IV.POFI.HHZ. 2021-02-08T01:08:27.79 0.1 negative manual P 257 14.874 114 0.1 100
IT.OPI.HGZ. 2021-02-08T01:08:26.77 0.1 negative manual P 304 5.5944 150 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:0.9 0.00006422286500000001 0.3 AML other m 2021-02-08T01:08:30.75
IV.POFI.HHE. ML:0.8 0.000060582125 1.82 AML other m 2021-02-08T01:08:31.95
IV.POFI.HNN. ML:1.2 0.00012407139999999999 0.7504 AML other m 2021-02-08T01:08:31.23
IV.POFI.HNE. ML:1.1 0.0001113754495 1.3704 AML other m 2021-02-08T01:08:31.95
IV.CERA.HNN. ML:1.1 0.000096313505 1.08 AML other m 2021-02-08T01:08:31.09
IV.CERA.HNE. ML:1.3 0.00012257602 0.34 AML other m 2021-02-08T01:08:31.78
IV.CERA.HHE. ML:1.0 0.000073799605 0.3 AML other m 2021-02-08T01:08:31.94
IV.CERA.HHN. ML:0.8 0.000046683868050000004 1.7 AML other m 2021-02-08T01:08:31.09
IV.VVLD.HHN. ML:1.2 0.00008225792 0.16 AML other m 2021-02-08T01:08:33.72
IV.VVLD.HNN. ML:1.4 0.0001478914 0.3 AML other m 2021-02-08T01:08:33.64
IV.VVLD.HNE. ML:1.4 0.000131598217 0.1296 AML other m 2021-02-08T01:08:33.65
IV.VVLD.HHE. ML:1.4 0.000129592335 0.12 AML other m 2021-02-08T01:08:33.65
IV.LRP.EHE. ML:0.9 0.00004590143 0.22 AML other m 2021-02-08T01:08:34.67
IV.INTR.HHN. ML:1.0 0.000047500905000000005 1.32 AML other m 2021-02-08T01:08:35.86
IV.MCI.EHE. ML:1.6 0.00021477465000000002 0.2 AML other m 2021-02-08T01:08:35.29
IV.LRP.EHN. ML:0.5 0.00001569194 0.18 AML other m 2021-02-08T01:08:35.71
IV.MCI.EHN. ML:1.4 0.000114297895 0.26 AML other m 2021-02-08T01:08:36.10
IV.INTR.HHE. ML:1.0 0.000044396865 0.12 AML other m 2021-02-08T01:08:36.20
IV.MIDA.HNE. ML:1.2 0.00005765696 0.22 AML other m 2021-02-08T01:08:37.79
IV.MIDA.HHN. ML:1.2 0.000058109284999999995 0.22 AML other m 2021-02-08T01:08:37.79
IV.MIDA.HNN. ML:1.5 0.0001305144 1.32 AML other m 2021-02-08T01:08:39.25
IV.INTR.HNN. ML:1.2 0.00006796506 0.0104 AML other m 2021-02-08T01:08:36.21
IV.INTR.HNE. ML:1.0 0.000051809365 0.22 AML other m 2021-02-08T01:08:34.85
IV.MIDA.HHE. ML:0.9 0.000035900439999999995 0.36 AML other m 2021-02-08T01:08:35.73
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