Earthquake with magnitude of ML 1.4 on date 07-08-2020 and time 18:49:43 (Italy) in region 2 km NW Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 2 km NW Norcia (PG), on

  • 07-08-2020 16:49:43 (UTC)
  • 07-08-2020 18:49:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.08 at 11 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 2 4957 4957
Preci PG 9 724 5681
Castelsantangelo sul Nera MC 11 281 5962
Cascia PG 12 3217 9179
Cerreto di Spoleto PG 14 1075 10254
Visso MC 14 1107 11361
Sellano PG 15 1079 12440
Ussita MC 16 444 12884
Poggiodomo PG 16 117 13001
Arquata del Tronto AP 18 1178 14179
Vallo di Nera PG 18 364 14543
Accumoli RI 19 667 15210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 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
Reviewed
Rev100
ML 1.4 2020-08-07
16:49:43
42.81 13.08 11 2020-08-07
16:58:50
Sala Sismica INGV-Roma 81742951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-07 16:49:43 ± 0.06
Latitude 42.81 ± 0.00
Longitude 13.08 ± 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 81742951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 23
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
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 81742951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-07 16:58:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FVI.HHZ. 2020-08-07T16:51:36.12 3.0 undecidable manual Sg 19.48 0
IV.SENA.HHZ. 2020-08-07T16:51:30.76 3.0 undecidable manual Sg 19.030001 0
GU.CANO.HHZ. 2020-08-07T16:51:17.61 3.0 undecidable manual Sn 2.87 0
IV.ZONE.HHZ. 2020-08-07T16:51:12.06 3.0 undecidable manual Sn 0.47 0
GU.BLANC.HHZ. 2020-08-07T16:51:11.84 3.0 undecidable manual Pg 17.82 0
IV.PANTE.HHZ. 2020-08-07T16:51:09.99 3.0 undecidable manual Pn 4.33 0
IV.SCIAC.HHZ. 2020-08-07T16:51:05.21 3.0 undecidable manual Pg 9.78 0
GU.GSCL.HHZ. 2020-08-07T16:50:47.99 3.0 undecidable manual Sg 7.54 0
IV.NDIM.HNZ. 2020-08-07T16:50:45.94 3.0 undecidable manual Sn -0.46 0
IV.MTRZ.HHZ. 2020-08-07T16:50:40.11 3.0 undecidable manual Sg 10.39 0
GU.CANO.HHZ. 2020-08-07T16:50:31.24 3.0 negative manual Pn -1.26 0
IV.RIBO.EHZ.01 2020-08-07T16:50:20.21 3.0 undecidable manual Sn 1.12 0
IV.MSAG.HHZ. 2020-08-07T16:50:18.72 3.0 undecidable manual Pn 2.19 0
IV.RCAV.EHZ. 2020-08-07T16:50:09.15 3.0 undecidable manual Sn -1.06 0
IV.MCIV.CHZ. 2020-08-07T16:50:08.86 3.0 undecidable manual Sn 0.82 0
IV.RIBO.EHZ.01 2020-08-07T16:50:02.88 3.0 undecidable manual Pg 1.64 0
IT.FIE.HGZ. 2020-08-07T16:50:02.39 3.0 undecidable manual Pn -0.77 0
IV.MCIV.CHZ. 2020-08-07T16:49:55.88 3.0 undecidable manual Pg 0.85 0
IV.CSP1.EHZ. 2020-08-07T16:49:54.35 0.6 undecidable manual S 18 0.2959 50 -0.13 62
IV.MTRA.HNE. 2020-08-07T16:49:53.06 0.6 undecidable manual S 103 0.2365 50 0.33 61
IV.SMA1.EHZ. 2020-08-07T16:49:53.20 0.6 undecidable manual S 134 0.2581 50 -0.16 63
IV.T1299.EHN. 2020-08-07T16:49:52.60 0.3 undecidable manual S 140 0.2284 50 0.11 95
IV.FDMO.HHZ. 2020-08-07T16:49:52.30 0.6 undecidable manual S 1 0.2266 50 -0.13 63
IV.LNSS.HNZ. 2020-08-07T16:49:51.80 0.6 undecidable manual S 188 0.2086 50 -0.09 64
IV.MMO1.EHZ. 2020-08-07T16:49:51.41 0.6 undecidable manual S 63 0.2005 50 -0.25 62
IV.ASSB.HHZ. 2020-08-07T16:49:51.16 0.3 undecidable manual P 307 0.3876 50 -0.13 92
IV.MML1.HNZ. 2020-08-07T16:49:50.57 0.6 undecidable manual P 345 0.3139 50 0.53 57
IV.GAVE.EHZ. 2020-08-07T16:49:50.95 0.6 undecidable manual S 230 0.1808 50 -0.12 64
IV.SMA1.EHZ. 2020-08-07T16:49:49.32 0.3 undecidable manual P 134 0.2581 50 0.24 92
IV.CSP1.EHZ. 2020-08-07T16:49:49.74 0.3 undecidable manual P 18 0.2959 50 0.01 96
IV.RM33.EHZ. 2020-08-07T16:49:49.89 0.3 undecidable manual P 162 0.3157 50 -0.17 93
IV.MC2.EHZ. 2020-08-07T16:49:49.63 0.6 undecidable manual S 38 0.1286 128 0.16 64
IV.FDMO.HHZ. 2020-08-07T16:49:48.65 0.6 undecidable manual P 1 0.2266 50 0.11 64
IV.MTRA.HNE. 2020-08-07T16:49:48.34 0.3 undecidable manual P 103 0.2365 50 -0.37 90
IV.LNSS.HNZ. 2020-08-07T16:49:48.49 0.3 undecidable manual P 188 0.2086 50 0.26 93
IV.MMO1.EHZ. 2020-08-07T16:49:48.12 0.3 undecidable manual P 63 0.2005 50 0.03 98
IV.T1299.EHN. 2020-08-07T16:49:48.55 0.3 undecidable manual P 140 0.2284 50 -0.03 97
IV.GAVE.EHZ. 2020-08-07T16:49:47.78 0.3 undecidable manual P 230 0.1808 50 0.03 98
IV.MC2.EHZ. 2020-08-07T16:49:46.99 0.3 undecidable manual P 38 0.1286 128 0.16 96
IV.NRCA.HHZ. 2020-08-07T16:49:46.99 0.6 undecidable manual S 45 0.0342 161 -0.26 64
IV.NRCA.HHZ. 2020-08-07T16:49:45.49 0.3 undecidable manual P 45 0.0342 161 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.6 0.00060438195 0.1408 AML other m 2020-08-07T16:49:47.10
IV.NRCA.HHN. ML:1.6 0.00061652945 0.0768 AML other m 2020-08-07T16:49:47.08
IV.NRCA.HNE. ML:1.5 0.00057128075 0.1408 AML other m 2020-08-07T16:49:47.18
IV.NRCA.HNN. ML:1.5 0.00050826735 0.0768 AML other m 2020-08-07T16:49:47.09
IV.GAVE.EHE. ML:1.1 8.798619E-5 0.192 AML other m 2020-08-07T16:49:51.24
IV.GAVE.EHN. ML:0.9 5.5859445E-5 0.2944 AML other m 2020-08-07T16:49:51.19
IV.FDMO.HHE. ML:0.4 1.6044465E-5 0.1408 AML other m 2020-08-07T16:49:52.86
IV.FDMO.HHN. ML:0.4 1.25009635E-5 0.1152 AML other m 2020-08-07T16:49:54.98
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