Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-06-2020 and time 01:50:48 (Italy) in region 3 km SW Accumoli (RI)

A magnitude ML 1.4 earthquake occured in region: 3 km SW Accumoli (RI), on

  • 16-06-2020 23:50:48 (UTC)
  • 17-06-2020 01:50:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6710, 13.2360 at 8 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
Accumoli RI 3 667 667
Amatrice RI 6 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Montereale AQ 16 2581 7565
Campotosto AQ 17 542 8107
Capitignano AQ 18 665 8772
Norcia PG 18 4957 13729
Acquasanta Terme AP 18 2916 16645
Cascia PG 19 3217 19862
Borbona RI 20 617 20479
Posta RI 20 694 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
83 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 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
Bulletin
Rev1000 		ML 1.4 2020-06-16
23:50:48		 42.6713 13.2363 8 2020-11-19
12:37:00		 Bollettino Sismico Italiano INGV 82764981
Reviewed
Rev100 		ML 1.4 2020-06-16
23:50:47		 42.6658 13.2452 8 2020-06-16
23:55:48		 Sala Sismica INGV-Roma 80248071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-16 23:50:48 ± 0.06
Latitude 42.6713 ± 0.0027
Longitude 13.2363 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82764981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 108
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47035
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 82764981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-09 11:28:36

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 80248071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-16 23:55:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2020-06-16T23:51:11.43 3.0 undecidable manual P 2.28 0
IV.GUMA.HHZ. 2020-06-16T23:51:03.48 0.6 undecidable manual S 10 44.1225 50 0.37 44
IV.MF5.EHZ. 2020-06-16T23:51:01.98 0.3 undecidable manual S 27 39.5271 50 0.11 71
IV.MNTT.EHZ. 2020-06-16T23:50:58.20 0.6 negative manual P 34 52.2033 50 0.2 45
IV.MC2.EHZ. 2020-06-16T23:50:58.04 0.6 undecidable manual S 352 26.9508 106 0.28 47
IV.OFFI.HHZ. 2020-06-16T23:50:57.25 0.3 undecidable manual P 51 46.8198 50 0.09 70
IV.GUMA.HHZ. 2020-06-16T23:50:56.42 0.3 undecidable manual P 10 44.1225 50 -0.33 67
IV.MF5.EHZ. 2020-06-16T23:50:55.73 0.6 undecidable manual P 27 39.5271 50 -0.31 45
IV.NRCA.HHZ. 2020-06-16T23:50:55.69 0.3 undecidable manual S 331 20.5683 110 0.03 74
IV.MTRA.EHZ. 2020-06-16T23:50:54.07 0.6 undecidable manual S 54 16.0728 115 -0.17 49
IV.RM33.EHZ. 2020-06-16T23:50:54.75 0.6 undecidable manual S 186 18.0708 112 -0.12 49
IV.LNSS.HHZ. 2020-06-16T23:50:54.98 0.6 undecidable manual S 245 17.6712 113 0.23 48
IV.MC2.EHZ. 2020-06-16T23:50:53.48 0.1 undecidable manual P 352 26.9508 106 -0.19 95
IV.SMA1.EHZ. 2020-06-16T23:50:52.43 0.3 undecidable manual S 119 9.2796 129 0.23 73
IV.NRCA.HHZ. 2020-06-16T23:50:52.39 0.1 positive manual P 331 20.5683 110 -0.06 99
IV.RM33.EHZ. 2020-06-16T23:50:51.84 0.6 positive manual P 186 18.0708 112 -0.15 49
IV.LNSS.HHZ. 2020-06-16T23:50:51.94 0.1 positive manual P 245 17.6712 113 0.01 100
IV.MTRA.EHZ. 2020-06-16T23:50:51.56 0.1 undecidable manual P 54 16.0728 115 -0.07 99
IV.SMA1.EHZ. 2020-06-16T23:50:50.62 1.0 undecidable manual P 119 9.2796 129 0.16 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.5 0.0005164999999999999 1.52 AML other m 2020-06-16T23:50:53.08
IV.SMA1.EHE. ML:1.6 0.0006285 0.18 AML other m 2020-06-16T23:50:53.24
IV.MTRA.HNE. ML:1.6 0.00041549999999999996 0.34 AML other m 2020-06-16T23:50:54.28
IV.MTRA.HNN. ML:1.7 0.000535 0.5 AML other m 2020-06-16T23:50:54.23
IV.MTRA.EHN. ML:1.7 0.0005075 0.08 AML other m 2020-06-16T23:50:54.23
IV.MTRA.EHE. ML:1.6 0.00042300000000000004 0.8 AML other m 2020-06-16T23:50:54.00
IV.RM33.EHN. ML:1.2 0.0001515 0.48 AML other m 2020-06-16T23:50:55.18
IV.RM33.EHE. ML:1.3 0.0001865 0.36 AML other m 2020-06-16T23:50:55.26
IV.NRCA.HHE. ML:1.2 0.000122 0.14 AML other m 2020-06-16T23:50:55.79
IV.LNSS.HHN. ML:1.1 0.00011650000000000001 0.36 AML other m 2020-06-16T23:50:56.40
IV.NRCA.HHN. ML:1.3 0.00014850000000000003 0.16 AML other m 2020-06-16T23:50:56.52
IV.LNSS.HHE. ML:1.2 0.00013900000000000002 0.12 AML other m 2020-06-16T23:50:56.43
IV.TERO.HHN. ML:1.5 0.00014800000000000002 0.06 AML other m 2020-06-16T23:50:57.69
IV.TERO.HHE. ML:1.3 0.0000937 0.16 AML other m 2020-06-16T23:50:57.77
IV.GUMA.HHE. ML:1.5 0.00009365 0.26 AML other m 2020-06-16T23:51:03.45
IV.GUMA.HHN. ML:1.5 0.00009025 1.64 AML other m 2020-06-16T23:51:04.08
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