INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.0 on date 08-02-2019 and time 18:09:05 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km E Norcia (PG), on

  • 08-02-2019 17:09:05 (UTC)
  • 08-02-2019 18:09:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.13 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.

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 11 281 5238
Preci PG 11 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 14 1178 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Montemonaco AP 19 604 14894
Sellano PG 19 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
99 Km NW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.0 2019-02-08
17:09:05
42.8 13.13 11 2019-02-08
17:14:23
Sala Sismica INGV-Roma 65334421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-08 17:09:05 ± 0.04
Latitude 42.80 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65334421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 340
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 65334421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-08 17:14:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2019-02-08T17:09:16.36 0.3 undecidable manual S 10 0.2941 50 0.02 75
IV.RM33.EHZ. 2019-02-08T17:09:16.58 0.3 undecidable manual S 168 0.2995 50 0.08 74
IV.CESI.HHZ. 2019-02-08T17:09:15.34 0.6 undecidable manual S 321 0.2626 50 -0.06 50
IV.FDMO.HHZ. 2019-02-08T17:09:14.32 0.6 undecidable manual S 352 0.2365 50 -0.31 47
IV.MTRA.EHZ. 2019-02-08T17:09:13.27 0.6 undecidable manual S 103 0.1988 115 -0.25 48
IV.LNSS.HHZ. 2019-02-08T17:09:13.97 0.6 undecidable manual S 199 0.2104 50 0.1 50
IV.GAVE.EHZ. 2019-02-08T17:09:13.64 0.3 undecidable manual S 238 0.2068 50 -0.11 75
IV.MMO1.EHZ. 2019-02-08T17:09:12.67 0.3 undecidable manual S 56 0.1727 119 0.07 76
IV.RM33.EHZ. 2019-02-08T17:09:11.78 1.0 undecidable manual P 168 0.2995 50 0.13 24
IV.CESI.HHZ. 2019-02-08T17:09:11.11 0.1 undecidable manual P 321 0.2626 50 0.09 99
IV.CSP1.EHZ. 2019-02-08T17:09:11.60 1.0 negative manual P 10 0.2941 50 0.04 25
IV.MC2.EHZ. 2019-02-08T17:09:11.06 0.1 undecidable manual S 21 0.1169 129 0.25 98
IV.LNSS.HHZ. 2019-02-08T17:09:10.18 0.3 negative manual P 199 0.2104 50 0.05 75
IV.GAVE.EHZ. 2019-02-08T17:09:10.15 0.1 undecidable manual P 238 0.2068 50 0.08 100
IV.FDMO.HHZ. 2019-02-08T17:09:10.48 0.1 undecidable manual P 352 0.2365 50 -0.09 99
IV.MMO1.EHZ. 2019-02-08T17:09:09.34 0.3 positive manual P 56 0.1727 119 -0.06 76
IV.MTRA.EHZ. 2019-02-08T17:09:09.83 0.1 undecidable manual P 103 0.1988 115 -0.1 100
IV.MC2.EHZ. 2019-02-08T17:09:08.61 0.6 positive manual P 21 0.1169 129 0.24 49
IV.NRCA.HHZ. 2019-02-08T17:09:08.52 0.6 undecidable manual S 337 0.0342 160 -0.38 49
IV.NRCA.HHZ. 2019-02-08T17:09:07.30 0.6 undecidable manual P 337 0.0342 160 0.04 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.3 0.0001255 0.14 AML other m 2019-02-08T17:09:14.29
IV.NRCA.HHE. ML:1.3 0.000343 0.78 AML other m 2019-02-08T17:09:09.23
IV.LNSS.HHE. ML:1.4 0.0001488 0.3 AML other m 2019-02-08T17:09:14.25
IV.NRCA.HHN. ML:1.4 0.0004455 0.12 AML other m 2019-02-08T17:09:08.62
IV.MTRA.EHE. ML:0.7 2.9664685E-5 0.1024 AML other m 2019-02-08T17:09:13.94
IV.MTRA.EHN. ML:0.7 3.2339865E-5 0.32 AML other m 2019-02-08T17:09:13.79
IV.CESI.HHE. ML:0.5 1.30490105E-5 0.0768 AML other m 2019-02-08T17:09:15.71
IV.CESI.HHN. ML:0.7 2.33734E-5 0.1024 AML other m 2019-02-08T17:09:15.76
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download