Earthquake with magnitude of ML 0.8 on date 21-01-2020 and time 05:23:37 (UTC) in region 5 km NE Norcia (PG)

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

  • 21-01-2020 05:23:37 (UTC)
  • 21-01-2020 06:23:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.14 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 5 4957 4957
Castelsantangelo sul Nera MC 7 281 5238
Preci PG 10 724 5962
Visso MC 12 1107 7069
Ussita MC 13 444 7513
Arquata del Tronto AP 14 1178 8691
Cascia PG 16 3217 11908
Montegallo AP 16 523 12431
Montemonaco AP 17 604 13035
Accumoli RI 17 667 13702
Cerreto di Spoleto PG 18 1075 14777
Sellano PG 18 1079 15856
Bolognola MC 20 142 15998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NW of Chieti (51815 inhabitants)
100 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
Rev 100 ML 0.8 2020-01-21
05:23:37
42.83 13.14 11 2020-01-21
05:32:07
Sala Sismica INGV-Roma 75694961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-21 05:23:37 ± 0.04
Latitude 42.83 ± 0.00
Longitude 13.14 ± 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 75694961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
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) 85
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 75694961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-21 05:32:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.RMVT.HGZ. 2020-01-21T05:24:09.16 3.0 undecidable manual S -0.11 0
IV.T1299.. 2020-01-21T05:23:54.65 3.0 undecidable manual P 0
IV.ARVD.HHZ. 2020-01-21T05:23:53.25 3.0 positive manual P 2.6 0
IV.CSP1.EHZ. 2020-01-21T05:23:48.24 0.3 undecidable manual S 11 0.2671 90 0.09 73
IV.SMA1.EHZ. 2020-01-21T05:23:47.47 0.3 undecidable manual S 144 0.2464 90 -0.07 71
IV.CESI.HHZ. 2020-01-21T05:23:47.51 0.3 undecidable manual S 316 0.2446 90 0 72
IV.LNSS.HHZ. 2020-01-21T05:23:47.36 0.3 undecidable manual S 198 0.2374 90 0.07 73
IV.FDMO.HHZ. 2020-01-21T05:23:46.25 0.3 undecidable manual S 350 0.2104 90 -0.23 69
IV.MTRA.EHZ. 2020-01-21T05:23:46.30 0.3 undecidable manual S 111 0.2032 90 0.03 73
IV.RM33.EHZ. 2020-01-21T05:23:44.92 0.1 undecidable manual P 170 0.3256 90 0.14 94
IV.MMO1.EHZ. 2020-01-21T05:23:44.62 0.3 undecidable manual S 63 0.1547 91 -0.22 71
IV.CSP1.EHZ. 2020-01-21T05:23:43.77 0.1 undecidable manual P 11 0.2671 90 -0.01 96
IV.MC2.EHZ. 2020-01-21T05:23:43.29 0.3 undecidable manual S 24 0.0899 120 0.31 70
IV.LNSS.HHZ. 2020-01-21T05:23:43.18 0.1 undecidable manual P 198 0.2374 90 -0.1 95
IV.SMA1.EHZ. 2020-01-21T05:23:43.37 0.1 undecidable manual P 144 0.2464 90 -0.05 96
IV.CESI.HHZ. 2020-01-21T05:23:43.40 0.3 undecidable manual P 316 0.2446 90 0 72
IV.FDMO.HHZ. 2020-01-21T05:23:42.71 0.1 undecidable manual P 350 0.2104 90 -0.1 95
IV.MTRA.EHZ. 2020-01-21T05:23:42.68 0.3 undecidable manual P 111 0.2032 90 -0.01 73
IV.MC2.EHZ. 2020-01-21T05:23:41.04 0.1 undecidable manual P 24 0.0899 120 0.25 95
IV.MMO1.EHZ. 2020-01-21T05:23:41.88 0.1 undecidable manual P 63 0.1547 91 0.02 99
IV.NRCA.HHZ. 2020-01-21T05:23:41.45 0.3 undecidable manual S 283 0.018 167 -0.27 74
IV.NRCA.HHZ. 2020-01-21T05:23:40.11 0.1 undecidable manual P 283 0.018 167 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.000344925 0.16 AML other m 2020-01-21T05:23:41.56
IV.NRCA.HHN. ML:1.3 0.00033229015 0.1568 AML other m 2020-01-21T05:23:41.50
IV.NRCA.HNE. ML:1.3 0.00033577225 0.1088 AML other m 2020-01-21T05:23:41.56
IV.NRCA.HNN. ML:1.2 0.00027911555 0.1408 AML other m 2020-01-21T05:23:42.19
IV.MTRA.EHE. ML:0.7 2.776325E-5 0.16 AML other m 2020-01-21T05:23:46.84
IV.MTRA.EHN. ML:0.7 3.080928E-5 0.2624 AML other m 2020-01-21T05:23:48.65
IV.FDMO.HHE. ML:0.4 1.7146355E-5 0.16 AML other m 2020-01-21T05:23:47.03
IV.FDMO.HHN. ML:0.2 1.2020935E-5 0.32 AML other m 2020-01-21T05:23:46.57
IV.SMA1.EHE. ML:0.9 4.4036635E-5 0.56 AML other m 2020-01-21T05:23:47.85
IV.SMA1.EHN. ML:0.8 3.2137903E-5 0.3584 AML other m 2020-01-21T05:23:47.89
IV.CESI.HHE. ML:0.4 1.51103005E-5 0.6592 AML other m 2020-01-21T05:23:47.90
IV.CESI.HHN. ML:0.7 2.4189065E-5 0.0992 AML other m 2020-01-21T05:23:48.23
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