Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 11-08-2019 and time 14:01:48 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 4 km E Norcia (PG), on

  • 11-08-2019 12:01:48 (UTC)
  • 11-08-2019 14:01:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7880, 13.1390 at 8 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 4 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Cascia PG 13 3217 8455
Preci PG 13 724 9179
Arquata del Tronto AP 13 1178 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Montegallo AP 17 523 12654
Ussita MC 17 444 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Cittareale RI 19 482 14772
Montemonaco AP 20 604 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 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 E of Viterbo (67173 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 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 2019-08-11
12:01:48		 42.7885 13.1387 8 2019-08-11
12:07:28		 Sala Sismica INGV-Roma 71380051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-11 12:01:48 ± 0.07
Latitude 42.7885 ± 0.0054
Longitude 13.1387 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71380051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 625
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 330
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 71380051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-11 12:07:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.SF04.EHZ. 2019-08-11T12:02:21.14 3.0 undecidable manual S 0.11 0
IT.FIE.HGZ. 2019-08-11T12:02:20.06 3.0 negative manual Pg 5.81 0
IV.SENI.HNZ. 2019-08-11T12:02:04.30 3.0 negative manual P -0.13 0
IV.MF5.EHZ. 2019-08-11T12:02:00.45 0.6 undecidable manual S 50 34.2435 103 0.22 45
IV.GAVE.EHZ. 2019-08-11T12:01:56.17 0.6 undecidable manual S 242 22.5552 110 -0.19 48
IV.MTRA.EHZ. 2019-08-11T12:01:56.09 0.6 undecidable manual S 99 21.2676 111 0.15 49
IV.TERO.HHZ. 2019-08-11T12:01:56.08 0.3 undecidable manual P 116 42.1245 50 -0.24 70
IV.MF5.EHZ. 2019-08-11T12:01:55.04 0.6 negative manual P 50 34.2435 103 -0.03 48
IV.MMO1.EHZ. 2019-08-11T12:01:55.08 0.6 undecidable manual S 51 19.6692 113 -0.32 47
IV.MTRA.EHZ. 2019-08-11T12:01:52.72 0.6 undecidable manual P 99 21.2676 111 0.13 49
IV.MMO1.EHZ. 2019-08-11T12:01:52.25 0.6 positive manual P 51 19.6692 113 -0.03 50
IV.GAVE.EHZ. 2019-08-11T12:01:52.93 0.1 undecidable manual P 242 22.5552 110 0.09 98
IV.FDMO.HHZ. 2019-08-11T12:01:52.33 3.0 negative manual P -0.03 0
IV.NRCA.HHZ. 2019-08-11T12:01:51.24 0.6 undecidable manual S 338 5.3946 147 -0.17 49
IV.MC2.EHZ. 2019-08-11T12:01:51.48 1.0 positive manual P 17 14.2746 120 0.17 24
IV.NRCA.HHZ. 2019-08-11T12:01:50.13 0.1 undecidable manual P 338 5.3946 147 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.6 0.00002845 1.56 AML other m 2019-08-11T12:01:57.15
IV.MTRA.EHN. ML:0.6 0.0000318 0.64 AML other m 2019-08-11T12:01:57.41
IV.FDMO.HHE. ML:0.3 0.000010895 0.3 AML other m 2019-08-11T12:01:57.84
IV.FDMO.HHN. ML:0.3 0.000012375000000000001 0.84 AML other m 2019-08-11T12:01:59.56
IV.TERO.HHE. ML:0.5 0.000010189999999999999 0.98 AML other m 2019-08-11T12:02:02.72
IV.TERO.HHN. ML:0.5 0.0000108 0.2 AML other m 2019-08-11T12:02:03.37
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