Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 24-08-2020 and time 00:57:33 (Italy) in region 4 km NW Cagnano Amiterno (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Cagnano Amiterno (AQ), on

  • 23-08-2020 22:57:33 (UTC)
  • 24-08-2020 00:57:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4850, 13.1910 at 14 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 4 1369 1369
Borbona RI 6 617 1986
Montereale AQ 6 2581 4567
Barete AQ 8 737 5304
Posta RI 9 694 5998
Capitignano AQ 10 665 6663
Pizzoli AQ 10 4326 10989
Antrodoco RI 12 2588 13577
Micigliano RI 12 127 13704
Scoppito AQ 14 3727 17431
Borgo Velino RI 14 972 18403
Cittareale RI 15 482 18885
Castel Sant'Angelo RI 17 1308 20193
Campotosto AQ 17 542 20735
Amatrice RI 18 2657 23392

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of L'Aquila (69753 inhabitants)
45 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
82 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
95 Km NE of Velletri (53303 inhabitants)
95 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 1.4 2020-08-23
22:57:33		 42.4853 13.1913 14 2020-11-19
12:37:06		 Bollettino Sismico Italiano INGV 84668061
Reviewed
Rev100 		ML 1.4 2020-08-23
22:57:33		 42.4847 13.2017 14 2020-08-23
23:04:19		 Sala Sismica INGV-Roma 82274681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-23 22:57:33 ± 0.1
Latitude 42.4853 ± 0.0045
Longitude 13.1913 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84668061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 489
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
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) 93
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.33365
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 82274681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-23 23:04:19

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 84668061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-12 11:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-08-23T22:57:45.45 0.6 undecidable manual S 66 37.0296 97 -0.39 44
IV.GAVE.EHZ. 2020-08-23T22:57:44.96 0.6 undecidable manual S 314 33.4443 98 0.08 47
IV.ARRO.EHZ. 2020-08-23T22:57:44.73 0.6 undecidable manual S 287 36.3414 97 -0.93 36
IV.MTRA.EHZ. 2020-08-23T22:57:44.96 0.3 undecidable manual S 29 34.4433 98 -0.2 69
IV.FIAM.HHZ. 2020-08-23T22:57:42.45 0.6 undecidable manual S 194 24.8529 104 -0.19 47
MN.AQU.HNN. 2020-08-23T22:57:42.25 0.6 undecidable manual S 130 22.755 106 0.14 48
IV.SMA1.EHN. 2020-08-23T22:57:41.72 0.6 undecidable manual S 36 19.9689 110 0.33 46
IV.LNSS.HHZ. 2020-08-23T22:57:41.03 0.6 undecidable manual S 317 17.9709 114 0.14 48
IV.T1299.HNN. 2020-08-23T22:57:41.03 0.6 undecidable manual S 24 18.0708 113 0.1 48
IV.ARRO.EHZ. 2020-08-23T22:57:40.66 0.3 undecidable manual P 287 36.3414 97 0.16 69
IV.MTRA.EHZ. 2020-08-23T22:57:40.08 0.1 undecidable manual P 29 34.4433 98 -0.14 93
IV.GAVE.EHZ. 2020-08-23T22:57:40.16 0.3 undecidable manual P 314 33.4443 98 0.1 70
IV.TERO.HHZ. 2020-08-23T22:57:40.40 0.1 undecidable manual P 66 37.0296 97 -0.21 91
IV.FIAM.HHZ. 2020-08-23T22:57:38.73 0.1 undecidable manual P 194 24.8529 104 -0.03 97
MN.AQU.HNN. 2020-08-23T22:57:38.52 0.3 undecidable manual P 130 22.755 106 0.07 72
IV.SMA1.EHN. 2020-08-23T22:57:38.23 0.1 undecidable manual P 36 19.9689 110 0.19 94
IV.RM33.EHZ. 2020-08-23T22:57:37.97 0.6 undecidable manual S 36 3.1968 164 -0.26 48
IV.LNSS.HHZ. 2020-08-23T22:57:37.94 0.1 undecidable manual P 317 17.9709 114 0.19 94
IV.T1299.HNN. 2020-08-23T22:57:37.93 0.1 undecidable manual P 24 18.0708 113 0.16 95
IV.RM33.EHZ. 2020-08-23T22:57:36.24 0.1 undecidable manual P 36 3.1968 164 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:2.0 0.0014049999999999998 0.28 AML other m 2020-08-23T22:57:38.13
IV.RM33.EHE. ML:2.0 0.00141 0.3 AML other m 2020-08-23T22:57:38.28
IV.RM33.HNN. ML:1.8 0.000737 0.48 AML other m 2020-08-23T22:57:38.45
IV.RM33.EHN. ML:1.8 0.000751 0.2 AML other m 2020-08-23T22:57:38.45
IV.LNSS.HHE. ML:1.4 0.0002 0.94 AML other m 2020-08-23T22:57:41.34
IV.LNSS.HHN. ML:1.4 0.000158 0.16 AML other m 2020-08-23T22:57:42.50
IV.FIAM.HHN. ML:1.3 0.00010205 0.88 AML other m 2020-08-23T22:57:42.57
IV.FIAM.HHE. ML:1.3 0.0001029 0.3 AML other m 2020-08-23T22:57:42.63
IV.MTRA.EHE. ML:1.5 0.000131 0.4 AML other m 2020-08-23T22:57:45.16
IV.MTRA.EHN. ML:1.6 0.00016099999999999998 0.1 AML other m 2020-08-23T22:57:45.20
IV.TERO.HHE. ML:1.1 0.0000499 1.66 AML other m 2020-08-23T22:57:45.00
IV.ARRO.EHE. ML:1.4 0.00010355000000000001 1.78 AML other m 2020-08-23T22:57:45.99
IV.TERO.HHN. ML:1.2 0.00005625 0.14 AML other m 2020-08-23T22:57:46.42
IV.GAVE.EHN. ML:1.2 0.000057999999999999994 0.16 AML other m 2020-08-23T22:57:46.39
IV.ARRO.EHN. ML:1.4 0.00008525 0.24 AML other m 2020-08-23T22:57:47.42
IV.GAVE.EHE. ML:1.2 0.00005935 1.86 AML other m 2020-08-23T22:57:48.03
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