Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 20-06-2020 and time 22:17:28 (Italy) in region 4 km W Amatrice (RI)

A magnitude ML 0.9 earthquake occured in region: 4 km W Amatrice (RI), on

  • 20-06-2020 20:17:28 (UTC)
  • 20-06-2020 22:17:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6460, 13.2470 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Amatrice RI 4 2657 2657
Accumoli RI 6 667 3324
Cittareale RI 8 482 3806
Montereale AQ 13 2581 6387
Campotosto AQ 14 542 6929
Capitignano AQ 15 665 7594
Arquata del Tronto AP 15 1178 8772
Borbona RI 17 617 9389
Posta RI 18 694 10083
Acquasanta Terme AP 19 2916 12999

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
82 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
97 Km E of Viterbo (67173 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
Reviewed
Rev100 		ML 0.9 2020-06-20
20:17:28		 42.6457 13.2468 11 2020-06-20
20:21:33		 Sala Sismica INGV-Roma 80355281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-20 20:17:28 ± 0.09
Latitude 42.6457 ± 0.0045
Longitude 13.2468 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80355281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 497
Semi-minor axis of confidence ellipse (meter) 261
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 353
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.26350
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 80355281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-20 20:21:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-06-20T20:17:38.70 0.6 undecidable manual S 13 28.8489 91 0.11 48
IV.TERO.HHZ. 2020-06-20T20:17:38.17 0.6 undecidable manual S 95 29.2485 91 -0.52 44
IV.NRCA.HHZ. 2020-06-20T20:17:36.90 0.6 undecidable manual S 333 23.4543 91 -0.25 47
IV.LNSS.HHZ. 2020-06-20T20:17:35.41 0.6 undecidable manual S 254 17.4714 93 -0.15 49
IV.MTRA.EHZ. 2020-06-20T20:17:35.33 0.6 undecidable manual S 45 17.3715 93 -0.18 48
IV.RM33.EHZ. 2020-06-20T20:17:34.88 0.6 undecidable manual S 190 15.3735 95 -0.1 50
IV.TERO.HHZ. 2020-06-20T20:17:34.34 1.0 undecidable manual P 95 29.2485 91 -0.01 24
IV.MMO1.EHZ. 2020-06-20T20:17:34.37 1.0 undecidable manual P 13 28.8489 91 0.07 24
IV.NRCA.HHZ. 2020-06-20T20:17:33.50 0.3 positive manual P 333 23.4543 91 0.04 74
IV.RM33.EHZ. 2020-06-20T20:17:32.28 0.6 positive manual P 190 15.3735 95 0.07 49
IV.T1299.EHZ. 2020-06-20T20:17:32.11 0.6 undecidable manual S 114 3.1968 160 -0.36 48
IV.MTRA.EHZ. 2020-06-20T20:17:32.57 0.1 undecidable manual P 45 17.3715 93 0.06 99
IV.LNSS.HHZ. 2020-06-20T20:17:32.55 0.1 undecidable manual P 254 17.4714 93 0.01 100
IV.SMA1.EHZ. 2020-06-20T20:17:31.50 0.1 undecidable manual P 103 7.3815 135 0.38 94
IV.T1299.EHZ. 2020-06-20T20:17:30.88 0.1 undecidable manual P 114 3.1968 160 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:0.7 0.000039399999999999995 0.84 AML other m 2020-06-20T20:17:35.46
IV.MTRA.EHE. ML:0.9 0.000058750000000000005 1.48 AML other m 2020-06-20T20:17:35.17
IV.NRCA.HHN. ML:0.9 0.00004695 0.1 AML other m 2020-06-20T20:17:37.05
IV.NRCA.HHE. ML:1.0 0.0000627 0.2 AML other m 2020-06-20T20:17:37.16
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