Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 16-06-2021 and time 23:46:39 (UTC) in region 7 km NW Arquata del Tronto (AP)

A magnitude ML 0.5 earthquake occured in region: 7 km NW Arquata del Tronto (AP), on

  • 16-06-2021 23:46:39 (UTC)
  • 17-06-2021 01:46:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8250, 13.2470 at 15 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
Arquata del Tronto AP 7 1178 1178
Montegallo AP 7 523 1701
Montemonaco AP 11 604 2305
Castelsantangelo sul Nera MC 11 281 2586
Norcia PG 13 4957 7543
Accumoli RI 14 667 8210
Acquasanta Terme AP 15 2916 11126
Montefortino FM 15 1178 12304
Ussita MC 16 444 12748
Visso MC 18 1107 13855
Preci PG 18 724 14579
Bolognola MC 19 142 14721
Roccafluvione AP 19 2010 16731
Palmiano AP 19 196 16927
Amandola FM 20 3629 20556

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
57 Km NE of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km S of Ancona (100861 inhabitants)
92 Km NW of Chieti (51815 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 0.5 2021-06-16
23:46:39		 42.8248 13.2467 15 2021-06-16
23:50:28		 Sala Sismica INGV-Roma 91422781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-16 23:46:39 ± 0.12
Latitude 42.8248 ± 0.0045
Longitude 13.2467 ± 0.0061
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 91422781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 563
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
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) 0.26890
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 91422781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-16 23:50:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-06-16T23:46:49.47 0.6 undecidable manual S 44 25.0527 106 0.67 43
IV.CSP1.EHZ. 2021-06-16T23:46:49.93 0.6 undecidable manual S 353 29.8479 102 -0.11 49
IV.FDMO.HHZ. 2021-06-16T23:46:49.04 0.6 undecidable manual S 331 26.8509 104 -0.22 48
IV.MNTT.EHZ. 2021-06-16T23:46:47.54 3.0 negative manual P 0.58 0
IV.TERO.HHZ. 2021-06-16T23:46:46.76 0.6 undecidable manual P 0.07 1
IV.MTRA.EHZ. 2021-06-16T23:46:46.05 0.6 undecidable manual S 122 14.3745 125 -0.16 49
IV.RM33.EHZ. 2021-06-16T23:46:46.44 1.0 positive manual P -0.02 0.5
IV.MMO1.EHZ. 2021-06-16T23:46:45.22 0.6 undecidable manual S 38 10.4784 136 -0.21 49
IV.MC2.EHZ. 2021-06-16T23:46:45.64 0.6 undecidable manual S 334 10.6782 136 0.18 49
IV.MF5.EHZ. 2021-06-16T23:46:45.16 1.0 negative manual P 44 25.0527 106 0.28 24
IV.NRCA.HHZ. 2021-06-16T23:46:45.38 0.6 undecidable manual S 275 10.7781 135 -0.1 51
IV.CSP1.EHZ. 2021-06-16T23:46:45.44 0.3 positive manual P 353 29.8479 102 -0.15 72
IV.FDMO.HHZ. 2021-06-16T23:46:44.96 1.0 negative manual P 331 26.8509 104 -0.18 24
IV.SMA1.EHZ. 2021-06-16T23:46:44.50 0.6 positive manual P -0.03 1
IV.NRCA.HHZ. 2021-06-16T23:46:43.10 0.6 undecidable manual P 275 10.7781 135 0.14 49
IV.MTRA.EHZ. 2021-06-16T23:46:43.31 0.1 undecidable manual P 122 14.3745 125 -0.07 100
IV.MC2.EHZ. 2021-06-16T23:46:43.07 0.6 undecidable manual P 334 10.6782 136 0.12 50
IV.MMO1.EHZ. 2021-06-16T23:46:42.87 0.3 undecidable manual P 38 10.4784 136 -0.06 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.4 0.000026349999999999997 0.32 AML other m 2021-06-16T23:46:45.53
IV.NRCA.HHE. ML:0.6 0.00004095 0.48 AML other m 2021-06-16T23:46:45.81
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