Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 06-08-2020 and time 00:15:35 (UTC) in region 2 km NE Opi (AQ)

A magnitude ML 1.3 earthquake occured in region: 2 km NE Opi (AQ), on

  • 06-08-2020 00:15:35 (UTC)
  • 06-08-2020 02:15:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7900, 13.8450 at 17 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
Opi AQ 2 420 420
Pescasseroli AQ 5 2203 2623
Villetta Barrea AQ 7 653 3276
Civitella Alfedena AQ 8 296 3572
San Donato Val di Comino FR 9 2107 5679
Barrea AQ 13 726 6405
Scanno AQ 13 1847 8252
Settefrati FR 13 728 8980
Alvito FR 14 2713 11693
Campoli Appennino FR 15 1725 13418
Gallinaro FR 15 1269 14687
Picinisco FR 16 1218 15905
Posta Fibreno FR 16 1139 17044
Pescosolido FR 16 1555 18599
Villalago AQ 16 568 19167
Bisegna AQ 16 223 19390
Scontrone AQ 17 574 19964
Alfedena AQ 17 864 20828
Vicalvi FR 17 783 21611
Atina FR 19 4316 25927
Fontechiari FR 19 1303 27230
Villa Latina FR 20 1241 28471
Rocca Pia AQ 20 178 28649
Broccostella FR 20 2741 31390

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km SW of Chieti (51815 inhabitants)
73 Km SE of L'Aquila (69753 inhabitants)
81 Km SW of Pescara (121014 inhabitants)
84 Km SW of Montesilvano (53738 inhabitants)
86 Km E of Latina (125985 inhabitants)
89 Km E of Tivoli (56533 inhabitants)
89 Km NW of Caserta (76326 inhabitants)
89 Km E of Velletri (53303 inhabitants)
96 Km E of Guidonia Montecelio (88673 inhabitants)
96 Km NW of Aversa (53047 inhabitants)
97 Km S of Teramo (54892 inhabitants)
100 Km NW of Giugliano in Campania (122974 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 1.3 2020-08-06
00:15:35		 41.7902 13.8452 17 2020-11-19
12:37:04		 Bollettino Sismico Italiano INGV 83807281
Reviewed
Rev100 		ML 1.2 2020-08-06
00:15:35		 41.7942 13.8437 17 2020-08-06
00:25:53		 Sala Sismica INGV-Roma 81688051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-06 00:15:35 ± 0.07
Latitude 41.7902 ± 0.0027
Longitude 13.8452 ± 0.0036
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83807281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 336
Semi-minor axis of confidence ellipse (meter) 115
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.01799
Epicentral distance of station farthest from the epicenter (degree) 0.52610
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:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 81688051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-06 00:25:53

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 83807281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-15 15:32:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2020-08-06T00:15:51.65 0.3 undecidable manual S 353 49.0176 99 0.35 65
IV.PTQR.HHZ. 2020-08-06T00:15:50.42 0.3 undecidable manual S 305 44.8218 100 0.24 67
IV.MIDA.HHZ. 2020-08-06T00:15:48.21 0.6 undecidable manual S 116 37.629 102 -0.09 47
IV.LPEL.HHZ. 2020-08-06T00:15:48.98 0.6 undecidable manual S 44 39.8268 102 0.1 46
IT.SULA.HNE. 2020-08-06T00:15:47.05 0.3 undecidable manual S 11 31.9458 106 0.22 69
IT.SULP.HGZ. 2020-08-06T00:15:47.42 0.3 undecidable manual S 12 33.4443 105 0.22 69
IT.SULC.HNE. 2020-08-06T00:15:46.87 0.3 undecidable manual S 10 31.2465 106 0.22 69
IV.TRIV.HHN. 2020-08-06T00:15:46.21 0.6 undecidable manual P 92 58.3971 97 0.11 45
IV.CERA.HHZ. 2020-08-06T00:15:45.39 0.3 undecidable manual S 146 25.752 111 0.14 71
IV.LRP.EHZ. 2020-08-06T00:15:45.73 0.3 undecidable manual S 234 26.6511 110 0.25 70
IV.RNI2.HHZ. 2020-08-06T00:15:45.77 0.3 undecidable manual S 111 27.1506 110 0.15 71
IV.T0110.HHZ. 2020-08-06T00:15:44.41 0.1 undecidable manual P 353 49.0176 99 -0.27 88
IV.GUAR.HHZ. 2020-08-06T00:15:44.24 0.3 undecidable manual P 271 44.1225 100 0.32 66
IV.INTR.HHZ. 2020-08-06T00:15:44.99 0.3 undecidable manual S 11 25.0527 112 -0.09 72
IV.PTQR.HHZ. 2020-08-06T00:15:43.86 0.6 undecidable manual P 305 44.8218 100 -0.17 45
IV.VVLD.HHZ. 2020-08-06T00:15:43.66 0.3 undecidable manual S 296 20.3685 119 -0.29 69
IV.MIDA.HHZ. 2020-08-06T00:15:42.58 0.1 undecidable manual P 116 37.629 102 -0.37 88
IV.LPEL.HHZ. 2020-08-06T00:15:42.97 0.6 undecidable manual P 44 39.8268 102 -0.31 45
IV.POFI.HHZ. 2020-08-06T00:15:42.49 0.3 undecidable manual S 234 13.6752 133 0 74
IT.SULA.HNE. 2020-08-06T00:15:42.03 0.3 undecidable manual P 11 31.9458 106 -0.07 71
IT.SULP.HGZ. 2020-08-06T00:15:42.06 0.3 undecidable manual P 12 33.4443 105 -0.25 68
IT.SULC.HNE. 2020-08-06T00:15:41.94 0.6 undecidable manual P 10 31.2465 106 -0.05 48
IV.RNI2.HHZ. 2020-08-06T00:15:41.76 0.1 undecidable manual P 111 27.1506 110 0.36 90
IV.CERA.HHZ. 2020-08-06T00:15:41.00 0.1 undecidable manual P 146 25.752 111 -0.19 94
IV.LRP.EHZ. 2020-08-06T00:15:41.26 0.3 undecidable manual P 234 26.6511 110 -0.06 72
IV.VVLD.HHZ. 2020-08-06T00:15:40.29 0.1 undecidable manual P 296 20.3685 119 -0.14 95
IT.OPI.HGZ. 2020-08-06T00:15:40.99 0.3 undecidable manual S 219 1.998 172 -0.01 76
IV.INTR.HHZ. 2020-08-06T00:15:40.83 0.1 undecidable manual P 11 25.0527 112 -0.26 93
IV.POFI.HHZ. 2020-08-06T00:15:39.63 0.1 undecidable manual P 234 13.6752 133 0.04 99
IT.OPI.HGZ. 2020-08-06T00:15:38.80 0.1 undecidable manual P 219 1.998 172 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:1.0 0.00008615563000000001 0.32 AML other m 2020-08-06T00:15:42.78
IV.POFI.HHN. ML:1.0 0.00007576978 0.14 AML other m 2020-08-06T00:15:42.90
IV.VVLD.HHN. ML:1.3 0.000108 0.12 AML other m 2020-08-06T00:15:44.10
IV.VVLD.HHE. ML:1.2 0.00009055 0.78 AML other m 2020-08-06T00:15:44.63
IV.CERA.HHE. ML:1.2 0.00008340000000000001 1 AML other m 2020-08-06T00:15:46.11
IV.CERA.HHN. ML:1.2 0.00008740000000000001 0.7 AML other m 2020-08-06T00:15:46.33
IV.INTR.HHN. ML:1.4 0.00014350000000000002 0.34 AML other m 2020-08-06T00:15:46.52
IV.RNI2.HHE. ML:1.5 0.0001535 1.4 AML other m 2020-08-06T00:15:47.09
IV.RNI2.HHN. ML:1.5 0.000158 1.3 AML other m 2020-08-06T00:15:47.99
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