Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 23-08-2020 and time 14:17:35 (UTC) in region 2 km SW Cagnano Amiterno (AQ)

A magnitude ML 2.3 earthquake occured in region: 2 km SW Cagnano Amiterno (AQ), on

  • 23-08-2020 14:17:35 (UTC)
  • 23-08-2020 16:17:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4420, 13.2090 at 10 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
Cagnano Amiterno AQ 2 1369 1369
Barete AQ 6 737 2106
Pizzoli AQ 7 4326 6432
Scoppito AQ 9 3727 10159
Montereale AQ 10 2581 12740
Borbona RI 10 617 13357
Antrodoco RI 11 2588 15945
Capitignano AQ 12 665 16610
Micigliano RI 13 127 16737
Posta RI 13 694 17431
Borgo Velino RI 13 972 18403
Castel Sant'Angelo RI 16 1308 19711
Tornimparte AQ 18 3187 22898
Campotosto AQ 19 542 23440
L'Aquila AQ 19 69753 93193
Lucoli AQ 20 1011 94204
Petrella Salto RI 20 1197 95401
Cittareale RI 20 482 95883

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
79 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
85 Km NE of Roma (2864731 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
91 Km NE of Velletri (53303 inhabitants)
100 Km SE of Perugia (166134 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 2.3 2020-08-23
14:17:35		 42.4425 13.2088 10 2020-11-19
12:37:02		 Bollettino Sismico Italiano INGV 83002471
Reviewed
Rev100 		ML 2.3 2020-08-23
14:17:35		 42.4442 13.2077 10 2020-08-23
14:28:36		 Sala Sismica INGV-Roma 82260641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-23 14:17:35 ± 0.07
Latitude 42.4425 ± 0.0036
Longitude 13.2088 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83002471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 239
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
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) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 1.07289
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 82260641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-23 14:28:36

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 83002471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-12 11:36:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-08-23T14:17:59.87 0.6 undecidable manual S 326 80.2641 50 0.52 40
IV.CSP1.EHZ. 2020-08-23T14:17:57.56 0.6 undecidable manual S 360 72.0723 50 0.41 42
IV.GUMA.HHZ. 2020-08-23T14:17:57.56 0.6 undecidable manual S 8 69.5748 50 1.07 32
IV.MOMA.HHZ. 2020-08-23T14:17:56.00 0.6 undecidable manual S 308 65.7897 50 0.52 41
IV.MF5.EHZ. 2020-08-23T14:17:56.04 0.6 undecidable manual S 19 63.8916 50 1.07 33
IV.FDMO.HHZ. 2020-08-23T14:17:56.10 0.3 undecidable manual S 351 66.6777 50 0.39 63
IV.ARVD.HHZ. 2020-08-23T14:17:55.87 0.6 undecidable manual P 350 119.0919 50 0.73 34
IV.EL6.EHZ. 2020-08-23T14:17:52.47 0.3 undecidable manual P 355 98.7234 50 0.46 59
IV.CESX.HHZ. 2020-08-23T14:17:52.59 0.6 undecidable manual S 290 54.1014 50 0.23 45
IV.GIUL.HHZ. 2020-08-23T14:17:52.55 0.6 undecidable manual P 178 98.124 50 0.63 37
IV.MC2.EHZ. 2020-08-23T14:17:52.24 0.6 undecidable manual S 358 52.0035 50 0.42 43
IV.MMO1.EHZ. 2020-08-23T14:17:51.57 0.6 undecidable manual S 11 51.6039 50 -0.12 46
IV.PTQR.HHE. 2020-08-23T14:17:51.60 0.3 undecidable manual S 161 49.2174 50 0.54 63
IV.BARO.EHZ. 2020-08-23T14:17:51.93 0.1 positive manual P 258 97.3248 50 0.14 84
IV.NRCA.HHZ. 2020-08-23T14:17:49.37 0.6 undecidable manual S 350 44.0226 50 -0.31 45
IV.INTR.HHZ. 2020-08-23T14:17:48.56 0.3 undecidable manual P 130 74.4699 50 0.29 64
IV.MNTT.EHZ. 2020-08-23T14:17:48.98 0.6 undecidable manual P 24 75.5688 50 0.54 40
IV.ASSB.HHZ. 2020-08-23T14:17:48.99 0.1 undecidable manual P 326 80.2641 50 -0.17 86
IV.CSP1.EHZ. 2020-08-23T14:17:47.71 0.1 positive manual P 360 72.0723 50 -0.18 88
IV.ARRO.EHZ. 2020-08-23T14:17:47.85 0.6 undecidable manual S 293 39.3273 50 -0.56 42
IV.GUMA.HHZ. 2020-08-23T14:17:47.60 0.1 positive manual P 8 69.5748 50 0.09 90
IV.MTRA.EHZ. 2020-08-23T14:17:47.46 0.6 undecidable manual S 24 38.0286 50 -0.63 41
IV.GAVE.EHZ. 2020-08-23T14:17:47.87 0.6 undecidable manual S 317 37.8288 50 -0.14 47
IV.TERO.HHZ. 2020-08-23T14:17:47.34 0.6 undecidable manual S 58 38.0286 50 -0.72 40
IV.MOMA.HHZ. 2020-08-23T14:17:46.73 0.1 negative manual P 308 65.7897 50 -0.19 88
IV.MF5.EHZ. 2020-08-23T14:17:46.90 0.1 undecidable manual P 19 63.8916 50 0.27 87
IV.FDMO.HHZ. 2020-08-23T14:17:46.96 0.1 negative manual P 351 66.6777 50 -0.1 90
IV.VCEL.EHZ. 2020-08-23T14:17:45.12 0.3 undecidable manual P 96 52.0035 50 0.32 66
IV.GIGS.HHE. 2020-08-23T14:17:45.32 0.6 undecidable manual S 88 29.8479 50 -0.56 43
IV.PTQR.HHE. 2020-08-23T14:17:44.08 0.3 undecidable manual P 161 49.2174 50 -0.3 67
IV.CESX.HHZ. 2020-08-23T14:17:44.81 0.1 positive manual P 290 54.1014 50 -0.32 88
IV.SMA1.EHZ. 2020-08-23T14:17:44.00 0.3 undecidable manual S 26 23.2545 113 -0.04 74
IV.MMO1.EHZ. 2020-08-23T14:17:44.52 0.1 positive manual P 11 51.6039 50 -0.22 90
IV.MC2.EHZ. 2020-08-23T14:17:44.72 0.1 positive manual P 358 52.0035 50 -0.09 93
IV.NRCA.HHZ. 2020-08-23T14:17:43.32 0.1 positive manual P 350 44.0226 50 -0.26 91
IV.FIAM.HHZ. 2020-08-23T14:17:43.03 0.6 undecidable manual S 201 20.7681 116 -0.21 48
IV.LNSS.HHZ. 2020-08-23T14:17:43.60 0.1 undecidable manual S 322 22.4553 114 -0.19 96
IV.T1299.HNZ. 2020-08-23T14:17:43.53 0.6 undecidable manual S 16 22.0668 114 -0.13 48
IV.GAVE.EHZ. 2020-08-23T14:17:42.33 0.1 undecidable manual P 317 37.8288 50 -0.28 91
IV.TERO.HHZ. 2020-08-23T14:17:42.21 0.1 negative manual P 58 38.0286 50 -0.43 88
MN.AQU.HNZ. 2020-08-23T14:17:42.50 0.6 undecidable manual S 121 18.87 118 -0.14 49
IV.ARRO.EHZ. 2020-08-23T14:17:42.61 0.1 positive manual P 293 39.3273 50 -0.23 92
IV.MTRA.EHZ. 2020-08-23T14:17:42.24 0.1 positive manual P 24 38.0286 50 -0.42 89
IV.FAGN.HHE. 2020-08-23T14:17:42.92 0.3 undecidable manual P 122 36.4413 50 0.51 65
IV.LNSS.HHZ. 2020-08-23T14:17:40.13 0.1 positive manual P 322 22.4553 114 -0.05 98
IV.GIGS.HHE. 2020-08-23T14:17:40.98 0.1 positive manual P 88 29.8479 50 -0.4 90
IV.T1299.HNZ. 2020-08-23T14:17:40.13 0.1 positive manual P 16 22.0668 114 0.03 99
IV.SMA1.EHZ. 2020-08-23T14:17:40.36 0.1 positive manual P 26 23.2545 113 0.04 98
IV.FIAM.HHZ. 2020-08-23T14:17:39.90 0.1 positive manual P 201 20.7681 116 0.04 99
MN.AQU.HNZ. 2020-08-23T14:17:39.51 0.1 negative manual P 121 18.87 118 0 100
IV.RM33.HNZ. 2020-08-23T14:17:39.80 0.1 undecidable manual S 4 7.3815 144 0.23 97
IV.RM33.HNZ. 2020-08-23T14:17:38.10 0.1 negative manual P 4 7.3815 144 0.36 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNN. ML:2.6 0.005882567 0.192 AML other m 2020-08-23T14:17:39.91
IV.RM33.EHN. ML:2.6 0.005724634500000001 0.1984 AML other m 2020-08-23T14:17:39.91
IV.RM33.HNE. ML:2.6 0.005989476 0.2432 AML other m 2020-08-23T14:17:40.21
IV.RM33.EHE. ML:2.6 0.0058686865 0.2432 AML other m 2020-08-23T14:17:40.21
IV.FIAM.HHN. ML:2.1 0.0009625158499999999 0.4608 AML other m 2020-08-23T14:17:43.53
IV.FIAM.HHE. ML:2.2 0.0012095 0.22 AML other m 2020-08-23T14:17:43.46
IV.FIAM.HNE. ML:2.5 0.0024878369999999997 0.2304 AML other m 2020-08-23T14:17:43.47
IV.FIAM.HNN. ML:2.2 0.0010371825 0.1472 AML other m 2020-08-23T14:17:43.53
IV.LNSS.HNE. ML:2.4 0.0018866830000000001 0.1088 AML other m 2020-08-23T14:17:44.00
IV.LNSS.HHE. ML:2.5 0.0021195630000000005 0.1216 AML other m 2020-08-23T14:17:43.00
IV.SMA1.EHN. ML:2.4 0.0018351349999999999 0.2368 AML other m 2020-08-23T14:17:44.42
IV.SMA1.EHE. ML:2.6 0.0027758495 0.48 AML other m 2020-08-23T14:17:44.67
IV.LNSS.HHN. ML:2.2 0.00112668315 0.16 AML other m 2020-08-23T14:17:44.72
IV.LNSS.HNN. ML:2.2 0.0010372807 0.1472 AML other m 2020-08-23T14:17:44.64
IV.TERO.HHN. ML:1.9 0.00026363685000000005 0.16 AML other m 2020-08-23T14:17:47.49
IV.GAVE.EHE. ML:2.3 0.000699 1.38 AML other m 2020-08-23T14:17:48.13
IV.MTRA.HNE. ML:2.4 0.00092211765 0.1408 AML other m 2020-08-23T14:17:48.13
IV.MTRA.EHE. ML:2.4 0.000919904 0.1408 AML other m 2020-08-23T14:17:48.14
IV.MTRA.HNN. ML:2.4 0.000981 0.26 AML other m 2020-08-23T14:17:48.31
IV.MTRA.EHN. ML:2.4 0.000984 0.26 AML other m 2020-08-23T14:17:48.31
IV.GAVE.HNE. ML:2.2 0.00065575505 0.1088 AML other m 2020-08-23T14:17:48.89
IV.ARRO.EHN. ML:2.2 0.0005290000000000001 0.16 AML other m 2020-08-23T14:17:49.32
IV.ARRO.EHE. ML:2.1 0.000434 0.18 AML other m 2020-08-23T14:17:49.42
IV.GAVE.EHN. ML:2.3 0.0007305 0.42 AML other m 2020-08-23T14:17:49.23
IV.NRCA.HHE. ML:2.7 0.0014550000000000001 1.18 AML other m 2020-08-23T14:17:50.23
IV.NRCA.HNE. ML:2.6 0.0011664901 0.1216 AML other m 2020-08-23T14:17:50.23
IV.TERO.HHE. ML:1.8 0.0002527524 0.16 AML other m 2020-08-23T14:17:50.36
IV.TERO.HNE. ML:1.8 0.00026167799999999994 0.1536 AML other m 2020-08-23T14:17:50.29
IV.NRCA.HNN. ML:2.5 0.0010355354 0.1024 AML other m 2020-08-23T14:17:50.81
IV.NRCA.HHN. ML:2.6 0.00125 0.1 AML other m 2020-08-23T14:17:50.81
IV.GAVE.HNN. ML:1.8 0.00023558675000000002 0.3584 AML other m 2020-08-23T14:17:50.73
IV.TERO.HNN. ML:2.0 0.0003744154 0.192 AML other m 2020-08-23T14:17:51.29
IV.CESX.HHN. ML:2.0 0.00021177714999999999 0.16 AML other m 2020-08-23T14:17:53.81
IV.CESX.HHE. ML:2.0 0.000219 0.32 AML other m 2020-08-23T14:17:54.45
IV.VCEL.EHE. ML:2.3 0.0004720427 0.4224 AML other m 2020-08-23T14:17:57.31
IV.FDMO.HHN. ML:1.9 0.00013802805 0.1408 AML other m 2020-08-23T14:17:57.47
IV.MOMA.HHE. ML:2.3 0.0004018682 0.2176 AML other m 2020-08-23T14:17:57.55
IV.MOMA.HNE. ML:2.3 0.0003933472 0.2304 AML other m 2020-08-23T14:17:57.55
IV.MOMA.HHN. ML:2.4 0.00044904315 0.3008 AML other m 2020-08-23T14:17:57.89
IV.MOMA.HNN. ML:2.3 0.0003617086 0.16 AML other m 2020-08-23T14:17:57.90
IV.GUMA.HHN. ML:2.6 0.0006445000000000001 0.72 AML other m 2020-08-23T14:17:58.38
IV.GUMA.HNE. ML:2.6 0.0006322763 0.2624 AML other m 2020-08-23T14:17:58.37
IV.VCEL.EHN. ML:2.2 0.00036392375 0.5184 AML other m 2020-08-23T14:17:58.59
IV.FDMO.HHE. ML:1.9 0.00014950000000000003 0.1 AML other m 2020-08-23T14:17:58.63
IV.CSP1.EHN. ML:1.7 0.000086510155 0.32 AML other m 2020-08-23T14:17:58.80
IV.GUMA.HHE. ML:2.7 0.0008320933 0.2816 AML other m 2020-08-23T14:17:59.20
IV.CSP1.EHE. ML:2.1 0.00021059915 0.2816 AML other m 2020-08-23T14:17:59.67
IV.ASSB.HHN. ML:2.4 0.000324 1.58 AML other m 2020-08-23T14:18:01.96
IV.ASSB.HHE. ML:2.3 0.000277 0.72 AML other m 2020-08-23T14:18:01.03
IV.INTR.HHE. ML:1.9 0.000126808325 0.2752 AML other m 2020-08-23T14:18:03.17
IV.MNTT.EHE. ML:2.4 0.00034245444999999995 0.3008 AML other m 2020-08-23T14:18:03.19
IV.MNTT.EHN. ML:2.4 0.0003855 0.42 AML other m 2020-08-23T14:18:03.42
IV.INTR.HNN. ML:2.1 0.0001858735 0.5312 AML other m 2020-08-23T14:18:08.96
IV.INTR.HHN. ML:2.0 0.00015952365000000002 0.4608 AML other m 2020-08-23T14:18:09.21
IV.BARO.EHN. ML:1.9 0.000077430855 0.5376 AML other m 2020-08-23T14:18:10.55
IV.BARO.HNE. ML:2.1 0.0001258136 0.6912 AML other m 2020-08-23T14:18:12.97
IV.BARO.EHE. ML:1.9 0.000073143635 0.5568 AML other m 2020-08-23T14:18:13.01
IV.BARO.HNN. ML:2.1 0.0001196636 0.5888 AML other m 2020-08-23T14:18:13.11
IV.ARVD.HHN. ML:1.7 0.000041 0.38 AML other m 2020-08-23T14:18:19.19
IV.ARVD.HHE. ML:1.9 0.000055599999999999996 1.38 AML other m 2020-08-23T14:18:19.72
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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