Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 15-10-2021 and time 04:50:02 (UTC) in region 2 km SE Villa Santa Lucia degli Abruzzi (AQ)

A magnitude ML 1.6 earthquake occured in region: 2 km SE Villa Santa Lucia degli Abruzzi (AQ), on

  • 15-10-2021 04:50:02 (UTC)
  • 15-10-2021 06:50:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3140, 13.7910 at 9 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 Santa Lucia degli Abruzzi AQ 3 123 123
Ofena AQ 3 506 629
Capestrano AQ 5 884 1513
Brittoli PE 6 290 1803
Carpineto della Nora PE 6 662 2465
Castel del Monte AQ 8 413 2878
Calascio AQ 8 137 3015
Castelvecchio Calvisio AQ 8 153 3168
Carapelle Calvisio AQ 9 87 3255
Civitaquana PE 9 1247 4502
Corvara PE 9 256 4758
Vicoli PE 9 390 5148
Villa Celiera PE 10 681 5829
Navelli AQ 10 554 6383
Civitella Casanova PE 10 1815 8198
Pescosansonesco PE 10 517 8715
Collepietro AQ 10 237 8952
Pietranico PE 11 484 9436
San Pio delle Camere AQ 12 661 10097
Cugnoli PE 12 1506 11603
Bussi sul Tirino PE 12 2518 14121
Caporciano AQ 12 230 14351
Castiglione a Casauria PE 12 831 15182
Santo Stefano di Sessanio AQ 12 111 15293
Montebello di Bertona PE 13 991 16284
Torre de' Passeri PE 14 3147 19431
Catignano PE 14 1399 20830
San Benedetto in Perillis AQ 15 113 20943
Farindola PE 15 1518 22461
Tocco da Casauria PE 15 2688 25149
Alanno PE 15 3487 28636
Prata d'Ansidonia AQ 16 496 29132
Popoli PE 16 5172 34304
Acciano AQ 16 327 34631
Nocciano PE 16 1810 36441
Barisciano AQ 16 1828 38269
Tione degli Abruzzi AQ 18 310 38579
Bolognano PE 18 1108 39687
Fontecchio AQ 18 369 40056
Scafa PE 18 3759 43815
San Valentino in Abruzzo Citeriore PE 19 1922 45737
Fagnano Alto AQ 19 418 46155
Molina Aterno AQ 19 386 46541
San Demetrio ne' Vestini AQ 19 1854 48395
Penne PE 20 12267 60662
Secinaro AQ 20 359 61021

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of Chieti (51815 inhabitants)
33 Km E of L'Aquila (69753 inhabitants)
37 Km SW of Montesilvano (53738 inhabitants)
39 Km W of Pescara (121014 inhabitants)
39 Km S of Teramo (54892 inhabitants)
91 Km E of Tivoli (56533 inhabitants)
94 Km E of Guidonia Montecelio (88673 inhabitants)
98 Km E of Terni (111501 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 1.6 2021-10-15
04:50:02		 42.3135 13.7907 9 2022-03-30
13:04:26		 Bollettino Sismico Italiano INGV 99284791
Reviewed
Rev100 		ML 1.7 2021-10-15
04:50:02		 42.3248 13.7862 9 2021-10-15
05:00:30		 Sala Sismica INGV-Roma 96592401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 04:50:02 ± 0.12
Latitude 42.3135 ± 0.0054
Longitude 13.7907 ± 0.0097
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99284791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 840
Semi-minor axis of confidence ellipse (meter) 171
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46765
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 96592401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-15 05:00:30

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 99284791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-03 15:05:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-10-15T04:51:16.34 3.0 undecidable manual Sn -1.57 0
HL.VLS.HHZ. 2021-10-15T04:51:08.67 3.0 undecidable manual Pn -0.68 0
IV.ZEN8.EHZ. 2021-10-15T04:51:04.55 3.0 undecidable manual Pn 3.13 0
IV.MAGA.HHZ. 2021-10-15T04:51:02.58 3.0 undecidable manual Pn -0.96 0
IV.SGAL.EHZ. 2021-10-15T04:51:01.42 3.0 positive manual Pn -1.35 0
OT.CGL1.HHZ. 2021-10-15T04:50:57.50 3.0 undecidable manual Sg 1.18 0
IV.JOPP.HHZ. 2021-10-15T04:50:33.21 3.0 undecidable manual Pn 3.03 0
IV.MRLC.HHZ. 2021-10-15T04:50:25.09 3.0 undecidable manual Sg 3.25 0
IV.TERO.HHN. 2021-10-15T04:50:15.71 0.6 undecidable manual S 336 37.5291 50 0.33 45
IV.INTR.HHZ. 2021-10-15T04:50:14.29 0.6 undecidable manual S 164 34.743 50 -0.35 45
IV.RM33.EHZ. 2021-10-15T04:50:12.77 0.6 undecidable manual P 295 51.9036 50 0.67 39
IV.CAFE.HHZ. 2021-10-15T04:50:11.18 3.0 undecidable manual S -5.39 0
IV.PTQR.HHZ. 2021-10-15T04:50:11.75 1.0 undecidable manual P 225 45.5211 50 0.63 20
IV.GIGS.HHE. 2021-10-15T04:50:10.41 0.6 undecidable manual S 311 23.6541 110 -0.71 41
IV.INTR.HHZ. 2021-10-15T04:50:09.09 0.6 undecidable manual P 164 34.743 50 -0.37 44
IV.FAGN.HHZ. 2021-10-15T04:50:09.35 0.3 undecidable manual S 253 17.7711 116 0.1 73
IV.TERO.HHN. 2021-10-15T04:50:09.80 0.3 undecidable manual P 336 37.5291 50 -0.09 70
IV.VCEL.EHZ. 2021-10-15T04:50:07.16 0.3 undecidable manual S 24 9.879 131 0.21 72
IV.FAGN.HHZ. 2021-10-15T04:50:06.53 0.3 undecidable manual P 253 17.7711 116 0.19 71
IV.GIGS.HHE. 2021-10-15T04:50:06.98 0.3 undecidable manual P 311 23.6541 110 -0.44 67
IV.T0110.HHZ. 2021-10-15T04:50:06.91 0.3 undecidable manual S 187 9.3795 133 0.09 74
IV.VCEL.EHZ. 2021-10-15T04:50:05.00 0.3 undecidable manual P 24 9.879 131 -0.02 75
IX.COL3.HHZ.02 2021-10-15T04:50:05.51 3.0 negative manual Pn -0.02 0
IV.T0110.HHZ. 2021-10-15T04:50:04.96 0.1 positive manual P 187 9.3795 133 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T0110.HHE. ML:1.6 0.00057362955 0.1824 AML other m 2021-10-15T04:50:10.22
IV.T0110.HHN. ML:1.7 0.0006761768500000001 0.1984 AML other m 2021-10-15T04:50:08.22
IV.VCEL.EHE. ML:1.7 0.00075129295 0.1408 AML other m 2021-10-15T04:50:08.53
IV.VCEL.EHN. ML:1.7 0.00079148175 0.3808 AML other m 2021-10-15T04:50:09.66
IV.FAGN.HHE. ML:1.5 0.00029327445000000004 0.24 AML other m 2021-10-15T04:50:11.50
IV.FAGN.HHN. ML:1.5 0.0002591736 0.3392 AML other m 2021-10-15T04:50:11.64
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