Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 16-02-2020 and time 02:06:01 (Italy) in region 5 km N Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 5 km N Norcia (PG), on

  • 16-02-2020 01:06:01 (UTC)
  • 16-02-2020 02:06:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8390, 13.0990 at 12 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
Preci PG 7 724 5681
Castelsantangelo sul Nera MC 8 281 5962
Visso MC 10 1107 7069
Ussita MC 12 444 7513
Cerreto di Spoleto PG 15 1075 8588
Cascia PG 15 3217 11805
Sellano PG 15 1079 12884
Arquata del Tronto AP 18 1178 14062
Monte Cavallo MC 19 145 14207
Montegallo AP 19 523 14730
Poggiodomo PG 19 117 14847
Montemonaco AP 20 604 15451

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
53 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Perugia (166134 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 2020-02-16
01:06:01		 42.8393 13.0988 12 2020-02-16
02:16:34		 Sala Sismica INGV-Roma 76556801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-16 01:06:01 ± 0.16
Latitude 42.8393 ± 0.0063
Longitude 13.0988 ± 0.0074
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76556801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 598
Semi-minor axis of confidence ellipse (meter) 563
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 183
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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) 0.26440
Number of stations at which the event was observed 7
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 14
Type of magnitude ML
Reference to an origin 76556801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-16 02:16:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2020-02-16T01:06:12.47 3.0 negative manual P 0.46 0
IV.CSP1.EHZ. 2020-02-16T01:06:11.77 0.6 undecidable manual S 17 29.3484 92 -0.13 48
IV.CESI.HHZ. 2020-02-16T01:06:10.43 0.1 undecidable manual S 319 24.2535 93 -0.12 98
IV.FDMO.HHZ. 2020-02-16T01:06:10.05 0.6 undecidable manual S 358 21.867 94 0.12 48
IV.MMO1.EHZ. 2020-02-16T01:06:09.12 0.6 undecidable manual S 70 19.6692 95 -0.22 47
IV.MC2.EHZ. 2020-02-16T01:06:07.23 0.6 undecidable manual S 42 10.878 120 0.16 49
IV.CSP1.EHZ. 2020-02-16T01:06:07.64 1.0 negative manual P 17 29.3484 92 0.08 24
IV.FDMO.HHZ. 2020-02-16T01:06:06.38 0.3 positive manual P 358 21.867 94 -0.04 74
IV.CESI.HHZ. 2020-02-16T01:06:06.85 0.6 undecidable manual P 319 24.2535 93 0.08 49
IV.MMO1.EHZ. 2020-02-16T01:06:06.20 1.0 negative manual P 70 19.6692 95 0.12 25
IV.NRCA.HHZ. 2020-02-16T01:06:05.34 0.6 undecidable manual S 117 1.3986 171 -0.31 48
IV.MC2.EHZ. 2020-02-16T01:06:05.09 1.0 undecidable manual P 42 10.878 120 0.32 24
IV.NRCA.HHZ. 2020-02-16T01:06:04.10 0.1 undecidable manual P 117 1.3986 171 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.9 0.00013443665 0.08 AML other m 2020-02-16T01:06:05.42
IV.NRCA.HHN. ML:1.0 0.000137706745 0.14 AML other m 2020-02-16T01:06:05.49
IV.NRCA.HNE. ML:0.9 0.00013083225 0.2 AML other m 2020-02-16T01:06:05.56
IV.NRCA.HNN. ML:0.9 0.00013354495 0.08 AML other m 2020-02-16T01:06:05.46
IV.FDMO.HHE. ML:0.4 0.000015351384 1.32 AML other m 2020-02-16T01:06:16.52
IV.FDMO.HHN. ML:0.5 0.000019268380000000002 44.66 AML other m 2020-02-16T01:06:06.46
IV.CESI.HNE. ML:1.2 0.00010355612 0.5896 AML other m 2020-02-16T01:06:18.45
IV.CESI.HNN. ML:1.4 0.000138341935 1.0296 AML other m 2020-02-16T01:06:14.18
IV.CESI.HHE. ML:0.4 0.000014327171 0.16 AML other m 2020-02-16T01:06:10.78
IV.CESI.HHN. ML:0.4 0.00001745841 0.2 AML other m 2020-02-16T01:06:10.73
IV.CSP1.EHE. ML:0.9 0.000035898449700000004 2.3 AML other m 2020-02-16T01:06:10.29
IV.CSP1.EHN. ML:0.5 0.0000134984 0.7 AML other m 2020-02-16T01:06:11.55
IV.MNTT.EHE. ML:1.3 0.00004978672 0.08 AML other m 2020-02-16T01:06:20.52
IV.MNTT.EHN. ML:1.2 0.000045013965000000004 0.2 AML other m 2020-02-16T01:06:13.03
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