Earthquake with magnitude of ML 0.8 on date 23-10-2019 and time 00:34:50 (Italy) in region 5 km NE Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Norcia (PG), on

  • 22-10-2019 22:34:50 (UTC)
  • 23-10-2019 00:34:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.84, 13.12 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 5 4957 4957
Castelsantangelo sul Nera MC 7 281 5238
Preci PG 8 724 5962
Visso MC 11 1107 7069
Ussita MC 12 444 7513
Cascia PG 16 3217 10730
Arquata del Tronto AP 16 1178 11908
Cerreto di Spoleto PG 17 1075 12983
Sellano PG 17 1079 14062
Montegallo AP 17 523 14585
Montemonaco AP 18 604 15189
Accumoli RI 19 667 15856
Bolognola MC 20 142 15998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
98 Km W of Pescara (121014 inhabitants)
98 Km NE of Guidonia Montecelio (88673 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 0.8 2019-10-22
22:34:50
42.84 13.12 10 2019-10-22
23:11:42
Sala Sismica INGV-Roma 73399481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-22 22:34:50 ± 0.15
Latitude 42.84 ± 0.01
Longitude 13.12 ± 0.01
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 73399481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 805
Semi-minor axis of confidence ellipse (meter) 428
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 810
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00719
Epicentral distance of station farthest from the epicenter (degree) 0.28958
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 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 73399481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-22 23:11:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-10-22T22:35:02.45 3.0 undecidable manual S 58 0.2896 50 0.95 0
IV.CSP1.EHZ. 2019-10-22T22:35:00.42 0.6 undecidable manual S 13 0.2617 50 -0.27 47
IV.FDMO.HHZ. 2019-10-22T22:34:58.38 0.6 undecidable manual S 353 0.2014 113 -0.16 49
IV.MTRA.EHZ. 2019-10-22T22:34:58.86 0.6 undecidable manual S 112 0.2167 112 -0.23 48
IV.MF5.EHZ. 2019-10-22T22:34:57.04 0.6 negative manual P 58 0.2896 50 0.34 46
IV.MMO1.EHZ. 2019-10-22T22:34:57.06 0.6 undecidable manual S 67 0.1619 118 -0.12 49
IV.CSP1.EHZ. 2019-10-22T22:34:56.13 0.6 undecidable manual P 13 0.2617 50 -0.09 49
IV.MC2.EHZ. 2019-10-22T22:34:55.04 0.6 undecidable manual S 33 0.089 134 0.16 50
IV.MTRA.EHZ. 2019-10-22T22:34:55.27 0.3 undecidable manual P 112 0.2167 112 -0.03 75
IV.MMO1.EHZ. 2019-10-22T22:34:54.27 0.1 positive manual P 67 0.1619 118 0.07 100
IV.FDMO.HHZ. 2019-10-22T22:34:54.99 0.6 positive manual P 353 0.2014 113 0.01 50
IV.MC2.EHZ. 2019-10-22T22:34:53.24 0.6 positive manual P 33 0.089 134 0.37 48
IV.NRCA.HHZ. 2019-10-22T22:34:53.17 0.6 undecidable manual S 241 0.0072 175 -0.26 50
IV.NRCA.HHZ. 2019-10-22T22:34:52.18 0.6 undecidable manual P 241 0.0072 175 0.15 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0 0.0005205 0.1 AML other m 2019-10-22T22:34:53.40
IV.NRCA.HHN. ML:0 0.000238 0.1 AML other m 2019-10-22T22:34:53.81
IV.CSP1.EHN. ML:0.8 3.26E-5 0.42 AML other m 2019-10-22T22:35:05.22
IV.CSP1.EHE. ML:0.8 2.8385E-5 0.42 AML other m 2019-10-22T22:35:12.21
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