Earthquake with magnitude of ML 1.3 on date 01-08-2020 and time 20:03:49 (Italy) in region 3 km NE Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 3 km NE Norcia (PG), on

  • 01-08-2020 18:03:49 (UTC)
  • 01-08-2020 20:03:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 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 3 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 10 724 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Ussita MC 15 444 10730
Arquata del Tronto AP 15 1178 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 17 667 13650
Sellano PG 18 1079 14729
Poggiodomo PG 18 117 14846
Montegallo AP 18 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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
Reviewed
Rev100
ML 1.3 2020-08-01
18:03:49
42.81 13.12 10 2020-08-01
18:09:42
Sala Sismica INGV-Roma 81553911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-01 18:03:49 ± 0.05
Latitude 42.81 ± 0.00
Longitude 13.12 ± 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 81553911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 65
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
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) 62
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.51981
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 81553911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-01 18:09:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-08-01T18:04:10.32 3.0 undecidable manual S -3.87 0
IV.EL6.EHZ. 2020-08-01T18:04:08.07 0.3 undecidable manual S 359 0.5198 50 0.65 60
IV.SENI.HNZ. 2020-08-01T18:04:03.67 3.0 negative manual P -3.3 0
IV.MF5.EHZ. 2020-08-01T18:04:01.85 0.3 undecidable manual S 55 0.3085 50 0.68 61
IV.RM33.EHZ. 2020-08-01T18:04:01.02 0.3 undecidable manual S 166 0.3094 50 -0.17 71
IV.CSP1.EHZ. 2020-08-01T18:04:00.34 0.3 undecidable manual S 13 0.2896 50 -0.27 69
IV.EL6.EHZ. 2020-08-01T18:03:59.64 0.6 positive manual P 359 0.5198 50 -0.1 46
IV.CESI.HNN. 2020-08-01T18:03:59.12 0.3 undecidable manual S 322 0.2491 50 -0.29 70
IV.LNSS.HHZ. 2020-08-01T18:03:58.30 0.3 undecidable manual S 195 0.214 112 0.15 72
IV.CESX.HHE. 2020-08-01T18:03:58.43 0.6 undecidable manual P 243 0.4371 50 0.09 47
IV.FDMO.HHZ. 2020-08-01T18:03:58.34 0.3 undecidable manual S 355 0.2275 111 -0.3 70
IV.ASSB.HHZ. 2020-08-01T18:03:57.83 0.3 undecidable manual P 305 0.4074 50 0 72
IT.MTCL.HGE. 2020-08-01T18:03:57.53 0.3 undecidable manual S 335 0.2032 113 -0.22 71
IV.MTRA.EHZ. 2020-08-01T18:03:57.77 0.1 undecidable manual S 104 0.2122 112 -0.33 93
IV.GAVE.EHZ. 2020-08-01T18:03:57.81 0.3 undecidable manual S 234 0.2005 113 0.14 73
IV.FEMA.HNE. 2020-08-01T18:03:56.19 0.3 undecidable manual S 342 0.1601 118 -0.07 74
IV.MMO1.EHZ. 2020-08-01T18:03:56.78 0.1 undecidable manual S 60 0.179 116 -0.12 98
IV.ARRO.EHZ. 2020-08-01T18:03:56.76 0.3 undecidable manual P 228 0.3453 50 0 73
IV.MF5.EHZ. 2020-08-01T18:03:56.37 0.3 negative manual P 55 0.3085 50 0.24 70
IV.CAMP.HHZ. 2020-08-01T18:03:56.52 0.6 undecidable manual P 142 0.348 50 -0.3 46
IV.CSP1.EHZ. 2020-08-01T18:03:55.67 0.1 negative manual P 13 0.2896 50 -0.14 95
IV.MC2.EHZ. 2020-08-01T18:03:55.42 0.3 undecidable manual S 28 0.1151 127 0.62 65
IV.RM33.EHZ. 2020-08-01T18:03:55.94 0.3 undecidable manual P 166 0.3094 50 -0.2 70
IV.MTRA.EHZ. 2020-08-01T18:03:54.27 0.3 positive manual P 104 0.2122 112 -0.09 73
IV.CESI.HNN. 2020-08-01T18:03:54.97 0.3 undecidable manual P 322 0.2491 50 -0.15 72
IV.GAVE.EHZ. 2020-08-01T18:03:54.31 0.1 negative manual P 234 0.2005 113 0.19 96
IV.LNSS.HHZ. 2020-08-01T18:03:54.43 0.1 undecidable manual P 195 0.214 112 0.04 99
IV.SMA1.EHZ. 2020-08-01T18:03:54.93 0.3 undecidable manual P 138 0.241 110 -0.02 74
IT.MTCL.HGE. 2020-08-01T18:03:54.09 0.3 undecidable manual P 335 0.2032 113 -0.07 74
IV.FDMO.HHZ. 2020-08-01T18:03:54.52 0.1 positive manual P 355 0.2275 111 -0.15 96
IV.T1299.HNE. 2020-08-01T18:03:54.59 0.6 undecidable manual P 145 0.214 112 0.21 48
IV.FEMA.HNE. 2020-08-01T18:03:53.41 0.3 undecidable manual P 342 0.1601 118 0.11 74
IV.MMO1.EHZ. 2020-08-01T18:03:53.57 0.1 positive manual P 60 0.179 116 -0.1 98
IV.MC2.EHZ. 2020-08-01T18:03:52.71 0.1 positive manual P 28 0.1151 127 0.25 96
IV.NRCA.HNZ. 2020-08-01T18:03:52.58 0.1 undecidable manual S 357 0.0243 165 -0.14 100
IV.NRCA.HNZ. 2020-08-01T18:03:51.46 0.1 negative manual P 357 0.0243 165 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.3 0.003635 0.14 AML other m 2020-08-01T18:03:52.69
IV.NRCA.HNN. ML:2.2 0.003375 0.16 AML other m 2020-08-01T18:03:52.70
IV.NRCA.HNE. ML:2 0.002045 0.1 AML other m 2020-08-01T18:03:53.17
IV.NRCA.HHE. ML:2.1 0.00228 0.08 AML other m 2020-08-01T18:03:53.17
IV.LNSS.HHE. ML:1.7 0.0002835 0.58 AML other m 2020-08-01T18:03:58.68
IV.GAVE.EHE. ML:1.5 0.0002325 0.16 AML other m 2020-08-01T18:03:58.75
IV.MTRA.EHE. ML:1.3 0.0001175 1.2 AML other m 2020-08-01T18:03:58.75
IV.GAVE.EHN. ML:1.5 0.0002255 0.18 AML other m 2020-08-01T18:03:58.76
IV.FDMO.HHN. ML:1.2 0.0001023 1.58 AML other m 2020-08-01T18:03:58.80
IV.LNSS.HHN. ML:1.7 0.0003465 1.8 AML other m 2020-08-01T18:03:58.95
IV.FDMO.HHE. ML:1.3 0.0001088 0.52 AML other m 2020-08-01T18:03:58.99
IV.MTRA.EHN. ML:1.3 0.000126 0.46 AML other m 2020-08-01T18:03:59.36
IV.CSP1.EHE. ML:1.4 0.0001062 1.02 AML other m 2020-08-01T18:04:00.24
IV.CSP1.EHN. ML:1.4 9.785E-5 1.68 AML other m 2020-08-01T18:04:01.84
IV.CAMP.HHE. ML:0.8 2.735E-5 0.22 AML other m 2020-08-01T18:04:02.51
IV.CAMP.HHN. ML:0.8 2.655E-5 0.78 AML other m 2020-08-01T18:04:02.69
IV.RM33.EHN. ML:1.2 6.435E-5 0.34 AML other m 2020-08-01T18:04:02.57
IV.ARRO.EHN. ML:1 3.5E-5 0.38 AML other m 2020-08-01T18:04:03.33
IV.RM33.EHE. ML:1.2 6.995E-5 0.86 AML other m 2020-08-01T18:04:03.49
IV.ARRO.EHE. ML:1.1 4.565E-5 0.2 AML other m 2020-08-01T18:04:04.80
IV.ASSB.HHE. ML:0.9 2.7E-5 0.82 AML other m 2020-08-01T18:04:06.51
IV.ASSB.HHN. ML:1 2.815E-5 0.8 AML other m 2020-08-01T18:04:08.19
IV.EL6.EHE. ML:1.5 6.345E-5 0.58 AML other m 2020-08-01T18:04:08.30
IV.EL6.EHN. ML:1.6 8.29E-5 0.18 AML other m 2020-08-01T18:04:08.55
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