Earthquake with magnitude of ML 1.4 on date 09-08-2020 and time 19:12:47 (Italy) in region 4 km SW Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Norcia (PG), on

  • 09-08-2020 17:12:47 (UTC)
  • 09-08-2020 19:12:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 13.06 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 4 4957 4957
Cascia PG 7 3217 8174
Preci PG 12 724 8898
Poggiodomo PG 12 117 9015
Cerreto di Spoleto PG 13 1075 10090
Castelsantangelo sul Nera MC 16 281 10371
Monteleone di Spoleto PG 16 599 10970
Vallo di Nera PG 16 364 11334
Sellano PG 17 1079 12413
Accumoli RI 17 667 13080
Visso MC 18 1107 14187
Cittareale RI 19 482 14669
Sant'Anatolia di Narco PG 19 564 15233
Arquata del Tronto AP 19 1178 16411
Scheggino PG 20 461 16872

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 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 2020-08-09
17:12:47
42.77 13.06 10 2020-08-09
17:20:04
Sala Sismica INGV-Roma 81819151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-09 17:12:47 ± 0.05
Latitude 42.77 ± 0.00
Longitude 13.06 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81819151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 326
Semi-minor axis of confidence ellipse (meter) 269
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.42358
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 81819151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-09 17:20:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTRA.EHZ. 2020-08-09T17:12:57.22 0.6 undecidable manual S 93 0.2446 50 -0.13 63
IV.SMA1.EHZ. 2020-08-09T17:12:57.45 0.6 undecidable manual S 125 0.2437 50 0.12 63
IV.FDMO.HHZ. 2020-08-09T17:12:57.65 0.6 undecidable manual S 4 0.2662 50 -0.33 60
IV.MMO1.EHZ. 2020-08-09T17:12:56.69 0.3 undecidable manual S 56 0.232 50 -0.28 92
IV.TERO.HHZ. 2020-08-09T17:12:56.01 0.3 undecidable manual P 110 0.4236 50 -0.23 90
IV.T1299.EHZ. 2020-08-09T17:12:56.49 0.6 undecidable manual S 130 0.2113 50 0.14 64
IV.CESX.HHZ. 2020-08-09T17:12:55.16 0.3 undecidable manual P 245 0.3858 50 -0.43 87
IV.MF5.EHZ. 2020-08-09T17:12:55.71 0.3 undecidable manual P 53 0.3624 50 0.52 85
IV.GUMA.HHZ. 2020-08-09T17:12:55.24 0.3 undecidable manual P 34 0.3534 50 0.21 91
IV.ASSB.HHZ. 2020-08-09T17:12:55.85 0.3 undecidable manual P 313 0.402 50 -0.01 94
IV.MOMA.HHZ. 2020-08-09T17:12:55.46 0.3 undecidable manual P 275 0.3633 50 0.25 90
IV.FEMA.HNZ. 2020-08-09T17:12:55.48 0.6 undecidable manual S 357 0.1916 116 -0.2 63
IV.CSP1.EHZ. 2020-08-09T17:12:54.88 0.3 undecidable manual P 18 0.3372 50 0.12 93
IV.GAVE.EHZ. 2020-08-09T17:12:54.17 0.6 undecidable manual S 238 0.1466 122 -0.02 66
IV.LNSS.HHZ. 2020-08-09T17:12:54.75 0.6 undecidable manual S 186 0.1691 119 -0.16 64
IV.MC2.EHZ. 2020-08-09T17:12:54.88 0.6 undecidable manual S 33 0.1682 119 0 66
IV.FDMO.HHZ. 2020-08-09T17:12:53.44 0.3 undecidable manual P 4 0.2662 50 -0.1 95
IV.ARRO.EHZ. 2020-08-09T17:12:53.86 0.3 undecidable manual P 229 0.2905 50 -0.11 95
IV.CESI.HNZ. 2020-08-09T17:12:53.65 0.3 undecidable manual P 334 0.2608 50 0.19 93
IV.MTRA.EHZ. 2020-08-09T17:12:53.03 0.3 undecidable manual P 93 0.2446 50 -0.15 95
IV.SMA1.EHZ. 2020-08-09T17:12:53.23 0.3 undecidable manual P 125 0.2437 50 0.06 96
IV.T1299.EHZ. 2020-08-09T17:12:52.80 0.3 undecidable manual P 130 0.2113 50 0.2 94
IV.FEMA.HNZ. 2020-08-09T17:12:52.48 0.3 undecidable manual P 357 0.1916 116 0.27 93
IV.MMO1.EHZ. 2020-08-09T17:12:52.83 0.3 undecidable manual P 56 0.232 50 -0.13 95
IV.NRCA.HNZ. 2020-08-09T17:12:51.79 0.6 undecidable manual S 31 0.0728 142 -0.25 64
IV.MC2.EHZ. 2020-08-09T17:12:51.84 0.3 undecidable manual P 33 0.1682 119 0.09 97
IV.GAVE.EHZ. 2020-08-09T17:12:51.39 0.3 undecidable manual P 238 0.1466 122 0.04 99
IV.LNSS.HHZ. 2020-08-09T17:12:51.82 0.3 undecidable manual P 186 0.1691 119 0.05 98
IV.NRCA.HNZ. 2020-08-09T17:12:50.15 0.3 undecidable manual P 31 0.0728 142 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0 8.360358E-5 0.2944 AML other m 2020-08-09T17:12:59.33
IV.SMA1.EHN. ML:0 8.555704E-5 0.384 AML other m 2020-08-09T17:13:00.29
IV.NRCA.HHE. ML:1.6 0.0005663913 0.1152 AML other m 2020-08-09T17:12:52.15
IV.NRCA.HHN. ML:1.7 0.0007136144 0.1408 AML other m 2020-08-09T17:12:51.85
IV.NRCA.HNE. ML:1.6 0.0005270145 0.1024 AML other m 2020-08-09T17:12:52.15
IV.GAVE.EHE. ML:1.7 0.0004089739 0.2304 AML other m 2020-08-09T17:12:54.34
IV.GAVE.EHN. ML:1.6 0.00037407145 0.1408 AML other m 2020-08-09T17:12:54.81
IV.GAVE.HNE. ML:1.7 0.0004516676 0.1152 AML other m 2020-08-09T17:12:54.81
IV.GAVE.HNN. ML:1.2 0.00014068645 0.2432 AML other m 2020-08-09T17:12:54.35
IV.LNSS.HHE. ML:1.5 0.00026420345 0.2176 AML other m 2020-08-09T17:12:55.30
IV.LNSS.HHN. ML:1.6 0.0003458341 0.1408 AML other m 2020-08-09T17:12:55.35
IV.LNSS.HNE. ML:1.5 0.0002314881 0.128 AML other m 2020-08-09T17:12:55.24
IV.LNSS.HNN. ML:1.6 0.00029781125 0.1536 AML other m 2020-08-09T17:12:55.42
IV.MTRA.EHE. ML:1.4 0.0001524838 0.256 AML other m 2020-08-09T17:12:58.60
IV.MTRA.EHN. ML:1.4 0.0001452272 0.1664 AML other m 2020-08-09T17:12:58.14
IV.MTRA.HNE. ML:1.5 0.0001705085 0.2432 AML other m 2020-08-09T17:12:58.60
IV.MTRA.HNN. ML:1.4 0.00013839107 0.1792 AML other m 2020-08-09T17:12:58.14
IV.FDMO.HHE. ML:1.1 6.2223775E-5 0.1536 AML other m 2020-08-09T17:12:58.32
IV.FDMO.HHN. ML:1.3 8.753846E-5 0.1536 AML other m 2020-08-09T17:12:58.48
IV.ARRO.EHE. ML:1 4.1194315E-5 0.1408 AML other m 2020-08-09T17:12:59.94
IV.ARRO.EHN. ML:1.1 5.9667405E-5 0.1792 AML other m 2020-08-09T17:13:00.03
IV.CSP1.EHE. ML:1.1 4.851499E-5 0.256 AML other m 2020-08-09T17:13:00.70
IV.CSP1.EHN. ML:0.9 3.124938E-5 0.1408 AML other m 2020-08-09T17:13:00.79
IV.CESX.HHE. ML:1 2.7725275E-5 0.3584 AML other m 2020-08-09T17:13:03.77
IV.CESX.HHN. ML:1 3.3902855E-5 0.1792 AML other m 2020-08-09T17:13:03.34
IV.GUMA.HNE. ML:1.7 0.0001583675 0.4736 AML other m 2020-08-09T17:13:04.10
IV.GUMA.HHE. ML:1.6 0.00012256735 0.384 AML other m 2020-08-09T17:13:04.28
IV.GUMA.HHN. ML:1.4 8.657478E-5 0.2432 AML other m 2020-08-09T17:13:02.37
IV.MOMA.HHE. ML:1.4 9.0285635E-5 0.2048 AML other m 2020-08-09T17:13:02.99
IV.MOMA.HHN. ML:1.5 0.00010746475 0.1408 AML other m 2020-08-09T17:13:02.71
IV.MF5.EHE. ML:1 3.566688E-5 0.2304 AML other m 2020-08-09T17:13:02.64
IV.ASSB.HHE. ML:1.2 5.2253265E-5 0.1792 AML other m 2020-08-09T17:13:03.82
IV.ASSB.HHN. ML:1.3 5.7155285E-5 0.1792 AML other m 2020-08-09T17:13:03.82
IV.TERO.HHE. ML:1.2 4.468726E-5 0.1408 AML other m 2020-08-09T17:13:03.53
IV.TERO.HHN. ML:1.2 4.005823E-5 0.2432 AML other m 2020-08-09T17:13:04.72
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