Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 16-06-2021 and time 04:21:05 (UTC) in region 3 km SE Montegallo (AP)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Montegallo (AP), on

  • 16-06-2021 04:21:05 (UTC)
  • 16-06-2021 06:21:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8160, 13.3510 at 27 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
Montegallo AP 3 523 523
Arquata del Tronto AP 7 1178 1701
Acquasanta Terme AP 7 2916 4617
Montemonaco AP 10 604 5221
Roccafluvione AP 11 2010 7231
Palmiano AP 13 196 7427
Venarotta AP 14 2066 9493
Montefortino FM 14 1178 10671
Valle Castellana TE 15 977 11648
Accumoli RI 16 667 12315
Comunanza AP 17 3166 15481
Castelsantangelo sul Nera MC 18 281 15762
Amandola FM 18 3629 19391
Ascoli Piceno AP 19 49407 68798
Force AP 20 1354 70152

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Teramo (54892 inhabitants)
52 Km N of L'Aquila (69753 inhabitants)
55 Km E of Foligno (57155 inhabitants)
64 Km E of Terni (111501 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
85 Km NW of Chieti (51815 inhabitants)
85 Km E of Perugia (166134 inhabitants)
90 Km S of Ancona (100861 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 1.7 2021-06-16
04:21:05		 42.8163 13.3513 27 2021-12-29
11:12:06		 Bollettino Sismico Italiano INGV 91644541
Reviewed
Rev100 		ML 1.7 2021-06-16
04:21:05		 42.8222 13.348 27 2021-06-16
04:28:19		 Sala Sismica INGV-Roma 91365501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-16 04:21:05 ± 0.14
Latitude 42.8163 ± 0.0036
Longitude 13.3513 ± 0.0074
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91644541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 553
Semi-minor axis of confidence ellipse (meter) 161
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.54409
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 91365501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-16 04:28:19

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 91644541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-21 12:03:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-06-16T04:21:25.11 0.6 undecidable manual S 341 60.3951 108 0.51 42
IV.GAVE.EHZ. 2021-06-16T04:21:20.33 0.6 undecidable manual S 250 39.7269 119 0.81 39
IV.MML1.HNE. 2021-06-16T04:21:20.75 0.6 undecidable manual S 317 45.1215 115 -0.06 47
IV.GIGS.HHN. 2021-06-16T04:21:20.42 0.6 undecidable manual S 156 44.1225 116 -0.16 46
IV.CESI.HHZ. 2021-06-16T04:21:20.40 0.6 undecidable manual S 300 41.9247 117 0.36 45
IV.RM33.EHZ. 2021-06-16T04:21:19.04 0.6 undecidable manual S 198 35.8419 121 0.4 45
IV.OFFI.HHZ. 2021-06-16T04:21:19.09 0.6 undecidable manual S 64 30.2475 127 1.71 24
IV.LNSS.HNZ. 2021-06-16T04:21:18.92 0.6 undecidable manual S 227 34.743 123 0.55 43
IV.FDMO.HHZ. 2021-06-16T04:21:17.45 0.6 undecidable manual S 319 32.5452 124 -0.43 45
IV.CSP1.EHZ. 2021-06-16T04:21:17.58 0.6 undecidable manual S 339 32.745 124 -0.36 46
IV.SAP2.EHE. 2021-06-16T04:21:17.84 0.6 undecidable manual S 7 31.3464 126 0.21 47
IV.GUMA.HHZ. 2021-06-16T04:21:17.06 0.3 undecidable manual S 357 27.3504 130 0.27 70
IV.CAMP.HHE. 2021-06-16T04:21:17.19 0.6 undecidable manual S 171 31.4463 125 -0.47 44
IV.TERO.HHZ. 2021-06-16T04:21:17.24 0.6 undecidable manual S 136 29.748 127 -0.05 49
IV.EL6.EHZ. 2021-06-16T04:21:16.55 0.1 undecidable manual P 341 60.3951 108 0.09 92
IV.T1299.HNZ. 2021-06-16T04:21:15.86 0.3 undecidable manual S 196 20.9679 138 0.3 70
IV.SMA1.EHZ. 2021-06-16T04:21:15.41 0.3 undecidable manual S 184 20.6682 139 -0.09 74
IV.MC2.EHZ. 2021-06-16T04:21:15.07 0.3 undecidable manual S 309 16.872 145 0.19 72
IV.MF5.EHZ. 2021-06-16T04:21:15.92 0.3 undecidable manual S 25 20.9679 138 0.36 69
IV.NRCA.HHZ. 2021-06-16T04:21:15.22 0.3 undecidable manual S 276 19.3695 141 -0.06 75
IV.MMO1.EHZ. 2021-06-16T04:21:13.60 0.3 undecidable manual S 348 9.3795 159 -0.33 72
IV.CESI.HHZ. 2021-06-16T04:21:13.71 0.1 positive manual P 300 41.9247 117 -0.11 94
IV.GAVE.EHZ. 2021-06-16T04:21:13.67 0.1 undecidable manual P 250 39.7269 119 0.15 94
IV.MML1.HNE. 2021-06-16T04:21:13.96 0.1 undecidable manual P 317 45.1215 115 -0.31 90
IV.MTRA.HNZ. 2021-06-16T04:21:13.50 0.3 undecidable manual S 151 7.5813 163 -0.27 73
IV.RM33.EHZ. 2021-06-16T04:21:13.02 0.1 undecidable manual P 198 35.8419 121 0.01 97
IV.GIGS.HHN. 2021-06-16T04:21:13.69 0.3 undecidable manual P 156 44.1225 116 -0.44 65
IV.MNTT.EHE. 2021-06-16T04:21:13.04 0.1 undecidable manual P 36 33.744 123 0.31 92
IV.TERO.HHZ. 2021-06-16T04:21:12.15 0.1 undecidable manual P 136 29.748 127 -0.08 97
IV.LNSS.HNZ. 2021-06-16T04:21:12.94 0.1 positive manual P 227 34.743 123 0.09 96
IV.FDMO.HHZ. 2021-06-16T04:21:12.23 0.1 positive manual P 319 32.5452 124 -0.34 91
IV.CSP1.EHZ. 2021-06-16T04:21:12.42 0.1 negative manual P 339 32.745 124 -0.19 94
IV.SAP2.EHE. 2021-06-16T04:21:12.38 0.6 undecidable manual P 7 31.3464 126 -0.05 49
IV.OFFI.HHZ. 2021-06-16T04:21:12.68 0.1 undecidable manual P 64 30.2475 127 0.39 91
IV.CAMP.HHE. 2021-06-16T04:21:12.36 0.1 undecidable manual P 171 31.4463 125 -0.09 96
IV.T1299.HNZ. 2021-06-16T04:21:11.31 0.1 undecidable manual P 196 20.9679 138 0.08 99
IV.SMA1.EHZ. 2021-06-16T04:21:11.16 0.1 undecidable manual P 184 20.6682 139 -0.04 99
IV.MF5.EHZ. 2021-06-16T04:21:11.23 0.1 negative manual P 25 20.9679 138 0 100
IV.GUMA.HHZ. 2021-06-16T04:21:11.88 0.1 negative manual P 357 27.3504 130 -0.06 98
IV.MMO1.EHZ. 2021-06-16T04:21:10.04 0.1 negative manual P 348 9.3795 159 -0.25 97
IV.MC2.EHZ. 2021-06-16T04:21:10.80 0.1 positive manual P 309 16.872 145 -0.04 100
IV.NRCA.HHZ. 2021-06-16T04:21:10.89 0.1 positive manual P 276 19.3695 141 -0.18 97
IV.MTRA.HNZ. 2021-06-16T04:21:09.97 0.1 negative manual P 151 7.5813 163 -0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:1.7 0.00027586984999999995 0.2112 AML other m 2021-06-16T04:21:13.71
IV.MTRA.EHE. ML:1.7 0.000265 0.2 AML other m 2021-06-16T04:21:13.61
IV.MTRA.HNN. ML:1.8 0.00034242685 0.1696 AML other m 2021-06-16T04:21:14.01
IV.MTRA.EHN. ML:1.8 0.00034099065 0.1792 AML other m 2021-06-16T04:21:14.01
IV.NRCA.HNE. ML:2.2 0.0006715 0.08 AML other m 2021-06-16T04:21:15.33
IV.NRCA.HHE. ML:2.2 0.0007070000000000001 0.1 AML other m 2021-06-16T04:21:15.38
IV.SMA1.EHN. ML:1.8 0.0002915 0.14 AML other m 2021-06-16T04:21:15.79
IV.SMA1.EHE. ML:1.8 0.0002585 0.2 AML other m 2021-06-16T04:21:15.96
IV.MF5.EHE. ML:1.5 0.00013535 1.88 AML other m 2021-06-16T04:21:15.02
IV.MF5.EHN. ML:1.7 0.000221 1.86 AML other m 2021-06-16T04:21:16.99
IV.NRCA.HNN. ML:1.9 0.00036899755 0.08 AML other m 2021-06-16T04:21:16.09
IV.NRCA.HHN. ML:2.0 0.00040849999999999995 0.08 AML other m 2021-06-16T04:21:16.05
IV.GUMA.HHE. ML:1.8 0.000221 0.26 AML other m 2021-06-16T04:21:17.35
IV.TERO.HHE. ML:1.4 0.000098038135 0.3808 AML other m 2021-06-16T04:21:17.74
IV.TERO.HHN. ML:1.2 0.00005414662 0.08 AML other m 2021-06-16T04:21:17.89
IV.FDMO.HHN. ML:1.4 0.00008317266 1.8816 AML other m 2021-06-16T04:21:17.00
IV.CSP1.EHE. ML:1.7 0.00016594730000000002 0.08 AML other m 2021-06-16T04:21:18.19
IV.CSP1.EHN. ML:1.8 0.00021603555000000003 0.2176 AML other m 2021-06-16T04:21:18.33
IV.GUMA.HHN. ML:1.5 0.0001133343 0.3808 AML other m 2021-06-16T04:21:18.30
IV.FDMO.HHE. ML:1.2 0.00004795601500000001 1.8624 AML other m 2021-06-16T04:21:18.03
IV.RM33.EHN. ML:1.5 0.00009875 0.28 AML other m 2021-06-16T04:21:19.73
IV.RM33.EHE. ML:1.5 0.00010155 1.42 AML other m 2021-06-16T04:21:20.03
IV.CESI.HHN. ML:1.6 0.00010449999999999999 1.46 AML other m 2021-06-16T04:21:21.00
IV.MNTT.EHN. ML:1.7 0.00017415000000000003 0.22 AML other m 2021-06-16T04:21:21.24
IV.CESI.HHE. ML:1.3 0.000054199999999999996 0.14 AML other m 2021-06-16T04:21:21.26
IV.MNTT.EHE. ML:2.0 0.0003085 0.18 AML other m 2021-06-16T04:21:21.71
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