Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 06-07-2021 and time 16:18:57 (UTC) in region 3 km SW Avezzano (AQ)

A magnitude ML 1.6 earthquake occured in region: 3 km SW Avezzano (AQ), on

  • 06-07-2021 16:18:57 (UTC)
  • 06-07-2021 18:18:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.0020, 13.4150 at 11 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
Avezzano AQ 3 42515 42515
Capistrello AQ 5 5252 47767
Luco dei Marsi AQ 6 6079 53846
Canistro AQ 7 995 54841
Castellafiume AQ 7 1106 55947
Scurcola Marsicana AQ 9 2824 58771
Civitella Roveto AQ 10 3268 62039
Magliano de' Marsi AQ 11 3690 65729
Cappadocia AQ 11 528 66257
Trasacco AQ 11 6246 72503
Massa d'Albe AQ 12 1476 73979
Civita d'Antino AQ 14 979 74958
Celano AQ 14 11017 85975
Filettino FR 14 565 86540
Tagliacozzo AQ 15 6889 93429
Morino AQ 16 1448 94877
Cerchio AQ 17 1635 96512
Aielli AQ 17 1475 97987
Ovindoli AQ 17 1227 99214
San Benedetto dei Marsi AQ 17 3909 103123
Vallepietra RM 17 283 103406
Collarmele AQ 19 894 104300
Collelongo AQ 19 1233 105533
Ortucchio AQ 20 1860 107393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km S of L'Aquila (69753 inhabitants)
51 Km E of Tivoli (56533 inhabitants)
57 Km E of Guidonia Montecelio (88673 inhabitants)
63 Km NE of Velletri (53303 inhabitants)
73 Km NE of Latina (125985 inhabitants)
73 Km SW of Chieti (51815 inhabitants)
77 Km SW of Teramo (54892 inhabitants)
78 Km E of Roma (2864731 inhabitants)
78 Km NE of Aprilia (73446 inhabitants)
83 Km SW of Montesilvano (53738 inhabitants)
84 Km SW of Pescara (121014 inhabitants)
84 Km E of Pomezia (62966 inhabitants)
89 Km SE of Terni (111501 inhabitants)
90 Km NE of Anzio (54211 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 2021-07-06
16:18:57		 42.0023 13.4152 11 2021-12-29
11:12:29		 Bollettino Sismico Italiano INGV 95336841
Reviewed
Rev100 		ML 1.6 2021-07-06
16:18:58		 42.0098 13.4072 11 2021-07-06
16:33:38		 Sala Sismica INGV-Roma 92313571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-06 16:18:57 ± 0.11
Latitude 42.0023 ± 0.0054
Longitude 13.4152 ± 0.0073
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95336841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 602
Semi-minor axis of confidence ellipse (meter) 449
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 322
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 25
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) 0.57197
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 95336841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-12 09:36:31

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 92313571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-06 16:33:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCIAC.HHZ. 2021-07-06T16:20:49.26 3.0 undecidable manual Sn -0.29 0
IV.MBFT.HHZ. 2021-07-06T16:20:48.62 3.0 undecidable manual Sg 9.48 0
MN.TRI.HHZ. 2021-07-06T16:20:47.53 3.0 undecidable manual Sg 12 0
MN.BNI.HHZ. 2021-07-06T16:20:39.55 3.0 undecidable manual Pg 23.27 0
MN.TIR.HHZ. 2021-07-06T16:20:30.53 3.0 undecidable manual Pg 22.530001 0
IV.CAPR.HNZ. 2021-07-06T16:20:15.37 3.0 undecidable manual Pg 16.57 0
GU.CARD.HHZ. 2021-07-06T16:20:10.63 3.0 undecidable manual Sn -2.06 0
IV.BOZZ.EHZ. 2021-07-06T16:19:57.46 3.0 undecidable manual Pg 7.64 0
IV.COR1.EHZ. 2021-07-06T16:19:48.49 3.0 undecidable manual Sg 4.21 0
IV.MNTT.EHZ. 2021-07-06T16:19:27.53 3.0 undecidable manual S -3.84 0
IV.ARVD.HHZ. 2021-07-06T16:19:21.36 3.0 negative manual Pg 1.01 0
IV.GIGS.HHN. 2021-07-06T16:19:15.56 0.6 undecidable manual S 14 51.7038 50 1.4 28
IV.RCAV.EHE. 2021-07-06T16:19:11.76 0.6 undecidable manual S 246 42.4242 50 0.06 47
IV.POFI.HHZ. 2021-07-06T16:19:11.14 0.6 undecidable manual S 142 40.0266 50 0.09 47
IV.INTR.HHZ. 2021-07-06T16:19:11.52 0.6 undecidable manual S 88 40.3263 50 0.38 44
IV.T0110.HHZ. 2021-07-06T16:19:10.82 0.6 undecidable manual S 50 38.9277 50 0.05 47
IV.LPEL.HHZ. 2021-07-06T16:19:09.07 0.6 undecidable manual P 85 63.492 50 -0.04 45
IV.CERT.HHZ. 2021-07-06T16:19:09.99 0.3 undecidable manual S 261 36.2415 50 -0.05 71
IV.FAGN.HHZ. 2021-07-06T16:19:08.84 0.6 undecidable manual S 25 32.3454 50 -0.17 47
IV.MMO1.EHZ. 2021-07-06T16:19:08.51 3.0 undecidable manual P -3.62 0
IV.GIGS.HHN. 2021-07-06T16:19:07.30 0.3 undecidable manual P 14 51.7038 50 0.01 70
IV.VVLD.HHZ. 2021-07-06T16:19:06.36 0.6 undecidable manual S 131 22.6551 50 -0.05 49
IV.GUAR.HHZ. 2021-07-06T16:19:06.68 1.0 undecidable manual S 200 24.5532 50 -0.25 23
IV.GIUL.HHZ. 2021-07-06T16:19:06.95 0.6 undecidable manual P 195 51.0156 50 -0.24 45
IV.RCAV.EHE. 2021-07-06T16:19:06.48 0.6 undecidable manual P 246 42.4242 50 0.61 41
IV.LRP.EHE. 2021-07-06T16:19:06.79 0.6 undecidable manual P 160 41.8248 50 1.01 35
IV.T0110.HHZ. 2021-07-06T16:19:05.10 0.3 undecidable manual P 50 38.9277 50 -0.23 68
IV.POFI.HHZ. 2021-07-06T16:19:05.51 0.3 undecidable manual P 142 40.0266 50 0.02 71
IV.INTR.HHZ. 2021-07-06T16:19:05.22 0.3 undecidable manual P 88 40.3263 50 -0.33 67
IV.FIAM.HNN. 2021-07-06T16:19:05.00 0.6 undecidable manual P 320 38.3283 50 -0.24 46
MN.AQU.HHN. 2021-07-06T16:19:05.90 0.6 undecidable manual P 359 39.0276 50 0.56 42
IV.CERT.HHZ. 2021-07-06T16:19:04.60 0.3 undecidable manual P 261 36.2415 50 -0.31 68
IV.GUAR.HHZ. 2021-07-06T16:19:03.15 0.3 undecidable manual P 200 24.5532 50 0.03 73
IV.FAGN.HHZ. 2021-07-06T16:19:03.72 0.1 undecidable manual P 25 32.3454 50 -0.6 84
IV.VVLD.HHZ. 2021-07-06T16:19:02.64 0.3 undecidable manual P 131 22.6551 50 -0.17 71
IV.PTQR.HHZ. 2021-07-06T16:19:01.87 0.6 undecidable manual S 331 2.4975 167 0.05 50
IV.PTQR.HHZ. 2021-07-06T16:19:00.26 0.1 undecidable manual P 331 2.4975 167 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHE. ML:1.9 0.001381 0.22 AML other m 2021-07-06T16:19:02.14
IV.PTQR.HHN. ML:1.7 0.0007793340499999999 0.192 AML other m 2021-07-06T16:19:02.46
IV.VVLD.HNN. ML:1.2 0.00010545460000000001 0.1792 AML other m 2021-07-06T16:19:06.75
IV.VVLD.HHN. ML:1.2 0.00010900000000000002 1.16 AML other m 2021-07-06T16:19:07.74
IV.VVLD.HNE. ML:1.3 0.00012256813 0.1792 AML other m 2021-07-06T16:19:07.23
IV.GUAR.HHE. ML:1.8 0.0003765 0.28 AML other m 2021-07-06T16:19:07.46
IV.VVLD.HHE. ML:1.4 0.0001505 1.64 AML other m 2021-07-06T16:19:07.12
IV.GUAR.HHN. ML:2.0 0.0006975 1.12 AML other m 2021-07-06T16:19:07.43
IV.FAGN.HHN. ML:1.9 0.00033499999999999996 0.4 AML other m 2021-07-06T16:19:11.73
IV.T0110.HHN. ML:1.9 0.000261 1.22 AML other m 2021-07-06T16:19:12.02
IV.T0110.HHE. ML:1.8 0.00022600000000000002 0.32 AML other m 2021-07-06T16:19:12.34
IV.INTR.HNN. ML:1.7 0.00016966249999999998 0.3328 AML other m 2021-07-06T16:19:12.56
IV.POFI.HHN. ML:0.9 0.000027 0.38 AML other m 2021-07-06T16:19:12.54
IV.INTR.HHE. ML:1.6 0.00015 0.38 AML other m 2021-07-06T16:19:12.40
IV.INTR.HHN. ML:1.8 0.00021150000000000002 0.82 AML other m 2021-07-06T16:19:12.56
IV.FAGN.HHE. ML:1.8 0.000312 0.28 AML other m 2021-07-06T16:19:13.23
IV.POFI.HHE. ML:0.9 0.000025500000000000003 0.56 AML other m 2021-07-06T16:19:14.85
IV.GIUL.HHE. ML:1.1 0.0000296 1.08 AML other m 2021-07-06T16:19:18.84
IV.LPEL.HHE. ML:1.4 0.00005155 0.9 AML other m 2021-07-06T16:19:19.48
IV.INTR.HNE. ML:1.7 0.000164101895 1.024 AML other m 2021-07-06T16:19:20.59
IV.GIUL.HHN. ML:1.1 0.000034949999999999996 0.42 AML other m 2021-07-06T16:19:20.46
IV.LPEL.HHN. ML:1.5 0.000057799999999999995 0.52 AML other m 2021-07-06T16:19:20.69
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