Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 08-05-2020 and time 10:05:34 (Italy) in region 2 km SE Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km SE Norcia (PG), on

  • 08-05-2020 08:05:34 (UTC)
  • 08-05-2020 10:05:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7810, 13.1140 at 10 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 2 4957 4957
Cascia PG 11 3217 8174
Preci PG 13 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Accumoli RI 15 667 9846
Arquata del Tronto AP 15 1178 11024
Poggiodomo PG 16 117 11141
Cerreto di Spoleto PG 17 1075 12216
Visso MC 17 1107 13323
Ussita MC 18 444 13767
Cittareale RI 18 482 14249
Montegallo AP 19 523 14772
Sellano PG 19 1079 15851
Monteleone di Spoleto PG 19 599 16450

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 Km W of Chieti (51815 inhabitants)
99 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 0.8 2020-05-08
08:05:34		 42.7807 13.1138 10 2020-05-08
08:10:08		 Sala Sismica INGV-Roma 78945161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-08 08:05:34 ± 0.18
Latitude 42.7807 ± 0.0063
Longitude 13.1138 ± 0.0123
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78945161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1120
Semi-minor axis of confidence ellipse (meter) 486
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 223
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.39300
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 78945161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-08 08:10:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-05-08T08:05:48.62 0.1 undecidable manual S 114 43.623 50 -0.1 95
IV.CSP1.EHZ. 2020-05-08T08:05:46.85 0.1 undecidable manual S 12 35.3424 50 0.35 93
IV.FDMO.HHZ. 2020-05-08T08:05:44.37 0.1 undecidable manual S 356 28.4493 50 -0.3 93
IV.SMA1.EHZ. 2020-05-08T08:05:43.78 0.1 undecidable manual S 133 24.5532 112 0.15 96
IV.TERO.HHZ. 2020-05-08T08:05:42.13 1.0 positive manual P 114 43.623 50 -0.54 22
IV.MMO1.EHZ. 2020-05-08T08:05:42.45 0.1 undecidable manual S 53 21.7671 115 -0.29 96
IV.MC2.EHZ. 2020-05-08T08:05:41.28 0.1 undecidable manual S 23 15.7731 123 0.38 94
IV.CSP1.EHZ. 2020-05-08T08:05:41.57 1.0 undecidable manual P 12 35.3424 50 0.18 24
IV.FDMO.HHZ. 2020-05-08T08:05:40.31 0.6 negative manual P 356 28.4493 50 -0.02 50
IV.MMO1.EHZ. 2020-05-08T08:05:39.19 1.0 undecidable manual P 53 21.7671 115 -0.03 25
IV.SMA1.EHZ. 2020-05-08T08:05:39.94 1.0 undecidable manual P 133 24.5532 112 0.21 24
IV.NRCA.HHZ. 2020-05-08T08:05:38.11 0.1 undecidable manual S 0 5.8941 150 -0.36 98
IV.MC2.EHZ. 2020-05-08T08:05:38.42 1.0 undecidable manual P 23 15.7731 123 0.26 24
IV.NRCA.HHZ. 2020-05-08T08:05:36.92 0.1 undecidable manual P 0 5.8941 150 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.6 0.0006385000000000001 0.14 AML other m 2020-05-08T08:05:38.14
IV.NRCA.HHE. ML:1.5 0.0005420000000000001 0.18 AML other m 2020-05-08T08:05:38.28
IV.FDMO.HHE. ML:0.6 0.000017599999999999998 0.24 AML other m 2020-05-08T08:05:44.71
IV.FDMO.HHN. ML:0.6 0.000020150000000000002 0.38 AML other m 2020-05-08T08:05:44.75
IV.SMA1.EHE. ML:0.7 0.00003095 0.56 AML other m 2020-05-08T08:05:45.17
IV.SMA1.EHN. ML:0.7 0.00003145 0.44 AML other m 2020-05-08T08:05:47.60
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