Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 08-02-2020 and time 01:19:17 (UTC) in region 3 km NE Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 3 km NE Norcia (PG), on

  • 08-02-2020 01:19:17 (UTC)
  • 08-02-2020 02:19:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8100, 13.1300 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 3 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Cascia PG 14 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 14 1178 11464
Ussita MC 15 444 11908
Accumoli RI 16 667 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 17 1075 14173
Sellano PG 19 1079 15252
Poggiodomo PG 19 117 15369
Montemonaco AP 19 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 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 2020-02-08
01:19:17		 42.8095 13.1295 10 2020-02-08
01:31:20		 Sala Sismica INGV-Roma 76328401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-08 01:19:17 ± 0.05
Latitude 42.8095 ± 0.0036
Longitude 13.1295 ± 0.0074
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76328401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 677
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
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) 140
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 76328401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-08 01:31:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2020-02-08T01:19:31.74 3.0 negative manual Pn -0.02 0
IV.CSP1.EHZ. 2020-02-08T01:19:28.33 1.0 undecidable manual S 11 31.9458 50 -0.01 24
IV.LNSS.HHZ. 2020-02-08T01:19:26.22 0.3 undecidable manual S 198 24.0537 50 -0.02 74
IV.GAVE.EHZ. 2020-02-08T01:19:26.01 0.3 undecidable manual S 236 23.1546 50 0.01 74
IV.FDMO.HHZ. 2020-02-08T01:19:26.48 0.3 undecidable manual S 352 25.4523 50 -0.12 72
IV.SRES.HHZ. 2020-02-08T01:19:25.43 3.0 negative manual P -1.51 0
IV.MMO1.EHZ. 2020-02-08T01:19:24.54 0.6 undecidable manual S 58 18.87 119 -0.16 48
IV.CSP1.EHZ. 2020-02-08T01:19:23.67 1.0 negative manual P 11 31.9458 50 0.03 24
IV.FDMO.HHZ. 2020-02-08T01:19:22.60 1.0 positive manual P 352 25.4523 50 -0.03 25
IV.MC2.EHZ. 2020-02-08T01:19:22.96 0.1 undecidable manual S 23 12.2766 130 0.16 98
IV.LNSS.HHZ. 2020-02-08T01:19:22.41 0.3 negative manual P 198 24.0537 50 -0.01 74
IV.GAVE.EHZ. 2020-02-08T01:19:22.52 1.0 undecidable manual P 236 23.1546 50 0.23 24
IV.MMO1.EHZ. 2020-02-08T01:19:21.38 1.0 undecidable manual P 58 18.87 119 -0.16 24
IV.NRCA.HNZ. 2020-02-08T01:19:20.50 0.6 undecidable manual S 335 2.8971 164 -0.47 47
IV.MC2.EHZ. 2020-02-08T01:19:20.55 0.1 undecidable manual P 23 12.2766 130 0.11 99
IV.NRCA.HNZ. 2020-02-08T01:19:19.51 0.1 undecidable manual P 335 2.8971 164 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:0.9 0.0000484 0.3 AML other m 2020-02-08T01:19:26.55
IV.LNSS.HHN. ML:0.9 0.00004915 0.16 AML other m 2020-02-08T01:19:26.60
IV.GAVE.EHE. ML:0.5 0.000022349515 0.32 AML other m 2020-02-08T01:19:27.11
IV.GAVE.EHN. ML:0.6 0.000022828830000000003 0.2 AML other m 2020-02-08T01:19:26.75
IV.FDMO.HHE. ML:-0.1 0.000007232794 0.24 AML other m 2020-02-08T01:19:28.13
IV.FDMO.HHN. ML:0.2 0.000010266923000000001 0.14 AML other m 2020-02-08T01:19:27.19
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