Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 06-02-2021 and time 04:39:30 (Italy) in region 1 km E Villa Sant'Angelo (AQ)

A magnitude ML 1.0 earthquake occured in region: 1 km E Villa Sant'Angelo (AQ), on

  • 06-02-2021 03:39:30 (UTC)
  • 06-02-2021 04:39:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.2720, 13.5480 at 8 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
Villa Sant'Angelo AQ 1 424 424
San Demetrio ne' Vestini AQ 2 1854 2278
Sant'Eusanio Forconese AQ 3 394 2672
Fagnano Alto AQ 3 418 3090
Prata d'Ansidonia AQ 5 496 3586
Fossa AQ 5 721 4307
Poggio Picenze AQ 6 1136 5443
Rocca di Cambio AQ 6 533 5976
Ocre AQ 6 1167 7143
Fontecchio AQ 7 369 7512
Barisciano AQ 7 1828 9340
Rocca di Mezzo AQ 7 1526 10866
San Pio delle Camere AQ 9 661 11527
Caporciano AQ 11 230 11757
Tione degli Abruzzi AQ 11 310 12067
Santo Stefano di Sessanio AQ 11 111 12178
Carapelle Calvisio AQ 12 87 12265
Castelvecchio Calvisio AQ 12 153 12418
Calascio AQ 14 137 12555
L'Aquila AQ 15 69753 82308
Navelli AQ 16 554 82862
Ovindoli AQ 16 1227 84089
Secinaro AQ 17 359 84448
Lucoli AQ 17 1011 85459
Acciano AQ 18 327 85786
Castel del Monte AQ 18 413 86199
Capestrano AQ 18 884 87083
Ofena AQ 19 506 87589

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km SE of L'Aquila (69753 inhabitants)
45 Km S of Teramo (54892 inhabitants)
52 Km W of Chieti (51815 inhabitants)
56 Km W of Montesilvano (53738 inhabitants)
59 Km W of Pescara (121014 inhabitants)
71 Km E of Tivoli (56533 inhabitants)
74 Km E of Guidonia Montecelio (88673 inhabitants)
81 Km E of Terni (111501 inhabitants)
91 Km NE of Velletri (53303 inhabitants)
97 Km E of Roma (2864731 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 1.0 2021-02-06
03:39:30		 42.2723 13.5477 8 2021-07-12
16:55:04		 Bollettino Sismico Italiano INGV 88681521
Reviewed
Rev100 		ML 1.1 2021-02-06
03:39:30		 42.2698 13.5532 7 2021-02-06
03:47:48		 Sala Sismica INGV-Roma 86870991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-06 03:39:30 ± 0.06
Latitude 42.2723 ± 0.0036
Longitude 13.5477 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88681521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 485
Semi-minor axis of confidence ellipse (meter) 105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.52161
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 86870991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-06 03:47:48

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 88681521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-09 13:48:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHE. 2021-02-06T03:39:48.88 0.6 undecidable manual S 115 57.8976 50 0.05 47
IV.SMA1.EHZ. 2021-02-06T03:39:45.17 0.3 undecidable manual S 336 43.3233 50 0.23 69
IV.T1299.HNN. 2021-02-06T03:39:45.76 0.6 undecidable manual S 332 45.621 50 0.22 46
IV.VVLD.HHZ. 2021-02-06T03:39:45.63 1.0 undecidable manual S 172 45.1215 50 0.23 23
IV.INTR.HHZ. 2021-02-06T03:39:44.36 0.3 undecidable manual S 134 41.2254 50 0 73
IV.RM33.HNE. 2021-02-06T03:39:43.79 0.1 undecidable manual S 314 37.8288 50 0.32 91
IV.FIAM.HHZ. 2021-02-06T03:39:42.28 1.0 undecidable manual S 269 35.3424 102 -0.37 23
IV.TERO.HHZ. 2021-02-06T03:39:42.94 1.0 undecidable manual S 7 39.1275 50 -0.87 19
IV.PTQR.HHZ. 2021-02-06T03:39:41.16 0.6 undecidable manual S 204 30.2475 104 0.21 47
IV.LPEL.HHE. 2021-02-06T03:39:41.03 0.6 undecidable manual P 115 57.8976 50 0.11 46
IV.CAMP.HHE. 2021-02-06T03:39:40.96 0.3 undecidable manual S 339 31.3464 104 -0.34 69
IV.VCEL.EHZ. 2021-02-06T03:39:40.41 0.6 undecidable manual S 60 27.5502 105 0.37 46
IV.LNSS.HNZ. 2021-02-06T03:39:40.51 0.6 undecidable manual P 312 55.4001 50 -0.02 47
IV.VVLD.HHZ. 2021-02-06T03:39:38.61 0.3 undecidable manual P 172 45.1215 50 -0.33 67
IV.INTR.HHZ. 2021-02-06T03:39:38.03 0.3 undecidable manual P 134 41.2254 50 -0.31 68
IV.SMA1.EHZ. 2021-02-06T03:39:38.89 0.3 undecidable manual P 336 43.3233 50 0.22 69
IV.T1299.HNN. 2021-02-06T03:39:38.96 0.6 undecidable manual P 332 45.621 50 -0.06 47
IV.T0110.HHZ. 2021-02-06T03:39:37.65 0.3 undecidable manual S 104 19.3695 111 0.32 71
IV.TERO.HHZ. 2021-02-06T03:39:37.14 0.3 undecidable manual P 7 39.1275 50 -0.88 56
IV.FIAM.HHZ. 2021-02-06T03:39:37.53 0.3 undecidable manual P 269 35.3424 102 0.18 71
IV.GIGS.HJZ. 2021-02-06T03:39:37.64 0.3 undecidable manual S 6 20.1687 110 0.05 75
IV.RM33.HNE. 2021-02-06T03:39:37.50 0.6 undecidable manual P 314 37.8288 50 -0.32 46
IV.VCEL.EHZ. 2021-02-06T03:39:36.25 0.6 negative manual P 60 27.5502 105 0.4 46
IV.CAMP.HHE. 2021-02-06T03:39:36.39 0.3 undecidable manual P 339 31.3464 104 -0.19 71
IV.PTQR.HHZ. 2021-02-06T03:39:36.16 1.0 positive manual P 204 30.2475 104 -0.21 24
MN.AQU.HNZ. 2021-02-06T03:39:36.22 0.3 undecidable manual S 308 14.7741 117 0.34 71
IV.GIGS.HJZ. 2021-02-06T03:39:34.30 0.3 undecidable manual P 6 20.1687 110 -0.13 74
IV.T0110.HHZ. 2021-02-06T03:39:34.64 0.3 undecidable manual P 104 19.3695 111 0.36 70
MN.AQU.HNZ. 2021-02-06T03:39:33.64 0.3 undecidable manual P 308 14.7741 117 0.2 73
IV.FAGN.HHZ. 2021-02-06T03:39:32.58 0.3 undecidable manual S 104 3.0969 158 -0.36 72
IV.FAGN.HHZ. 2021-02-06T03:39:31.57 0.1 negative manual P 104 3.0969 158 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T0110.HHE. ML:1.0 0.00008395809 0.48 AML other m 2021-02-06T03:39:38.88
IV.T0110.HHN. ML:1.2 0.00013566780000000002 1.2208 AML other m 2021-02-06T03:39:38.76
IV.PTQR.HHN. ML:0.6 0.000018661285 2.2 AML other m 2021-02-06T03:39:41.36
IV.PTQR.HHE. ML:0.6 0.00002104006 2.1008 AML other m 2021-02-06T03:39:41.74
IV.VCEL.EHN. ML:1.1 0.00006503981 1.4592 AML other m 2021-02-06T03:39:40.83
IV.VCEL.EHE. ML:1.1 0.000065934005 0.9792 AML other m 2021-02-06T03:39:41.80
IV.INTR.HNN. ML:1.4 0.00007852035 0.7392 AML other m 2021-02-06T03:39:44.20
IV.INTR.HNE. ML:1.2 0.000059468835 0.6496 AML other m 2021-02-06T03:39:44.58
IV.INTR.HHN. ML:1.0 0.000028032225 0.56 AML other m 2021-02-06T03:39:45.19
IV.INTR.HHE. ML:1.0 0.000029127914999999997 0.8208 AML other m 2021-02-06T03:39:45.21
IV.SMA1.EHE. ML:0.9 0.000024809345 0.68 AML other m 2021-02-06T03:39:45.97
IV.SMA1.EHN. ML:0.9 0.000027149964999999997 2.2992 AML other m 2021-02-06T03:39:46.03
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