Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 21-06-2020 and time 08:05:11 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km E Norcia (PG), on

  • 21-06-2020 06:05:11 (UTC)
  • 21-06-2020 08:05:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7900, 13.1480 at 9 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
Norcia PG 5 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Arquata del Tronto AP 12 1178 6416
Accumoli RI 13 667 7083
Preci PG 13 724 7807
Cascia PG 14 3217 11024
Montegallo AP 16 523 11547
Visso MC 17 1107 12654
Ussita MC 17 444 13098
Cerreto di Spoleto PG 19 1075 14173
Cittareale RI 19 482 14655
Montemonaco AP 19 604 15259
Poggiodomo PG 19 117 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
97 Km SW 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
Reviewed
Rev100 		ML 0.9 2020-06-21
06:05:11		 42.7902 13.1482 9 2020-06-21
06:09:27		 Sala Sismica INGV-Roma 80366781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-21 06:05:11 ± 0.14
Latitude 42.7902 ± 0.0054
Longitude 13.1482 ± 0.0086
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80366781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 683
Semi-minor axis of confidence ellipse (meter) 445
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 311
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.37412
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 80366781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-21 06:09:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-06-21T06:05:25.44 0.1 undecidable manual S 116 41.5251 50 -0.34 88
IV.LNSS.HHZ. 2020-06-21T06:05:20.53 0.1 undecidable manual S 203 22.5552 113 0.19 94
IV.TERO.HHZ. 2020-06-21T06:05:20.51 0.6 undecidable manual P 116 41.5251 50 0.61 41
IV.MMO1.EHZ. 2020-06-21T06:05:19.34 0.1 undecidable manual S 50 18.9699 116 0.15 95
IV.MTRA.EHZ. 2020-06-21T06:05:19.64 0.1 undecidable manual S 100 20.5683 115 -0.06 96
IV.MC2.EHZ. 2020-06-21T06:05:17.83 0.1 undecidable manual S 14 13.875 124 0.16 96
IV.MMO1.EHZ. 2020-06-21T06:05:16.12 1.0 negative manual P 50 18.9699 116 0.03 24
IV.MTRA.EHZ. 2020-06-21T06:05:16.41 1.0 undecidable manual P 100 20.5683 115 0.02 24
IV.LNSS.HHZ. 2020-06-21T06:05:16.70 0.3 negative manual P 203 22.5552 113 -0.06 72
IV.NRCA.HHZ. 2020-06-21T06:05:15.29 0.1 undecidable manual S 330 5.5944 149 -0.35 93
IV.MC2.EHZ. 2020-06-21T06:05:15.29 1.0 positive manual P 14 13.875 124 0.08 24
IV.NRCA.HHZ. 2020-06-21T06:05:14.03 0.1 negative manual P 330 5.5944 149 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:0.7 0.0000344 0.7 AML other m 2020-06-21T06:05:19.99
IV.MTRA.EHE. ML:0.7 0.00003695 1.78 AML other m 2020-06-21T06:05:20.00
IV.LNSS.HHE. ML:1.1 0.00009045 0.42 AML other m 2020-06-21T06:05:20.56
IV.LNSS.HHN. ML:1.2 0.00010685 0.7 AML other m 2020-06-21T06:05:20.94
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