Earthquake with magnitude of ML 0.4 on date 30-11-2020 and time 22:56:59 (Italy) in region 6 km NW Norcia (PG)

A magnitude ML 0.4 earthquake occured in region: 6 km NW Norcia (PG), on

  • 30-11-2020 21:56:59 (UTC)
  • 30-11-2020 22:56:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.03 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 6 4957 4957
Preci PG 6 724 5681
Cerreto di Spoleto PG 9 1075 6756
Sellano PG 11 1079 7835
Cascia PG 12 3217 11052
Castelsantangelo sul Nera MC 13 281 11333
Visso MC 13 1107 12440
Poggiodomo PG 15 117 12557
Vallo di Nera PG 15 364 12921
Ussita MC 16 444 13365
Sant'Anatolia di Narco PG 19 564 13929
Monte Cavallo MC 19 145 14074
Monteleone di Spoleto PG 20 599 14673

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
61 Km SE of Perugia (166134 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 0.4 2020-11-30
21:56:59
42.82 13.03 11 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85446211
Reviewed
Rev100
ML 0.7 2020-11-30
21:57:00
42.83 13.02 10 2020-11-30
22:07:54
Sala Sismica INGV-Roma 85114381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 21:56:59 ± 0.06
Latitude 42.82 ± 0.00
Longitude 13.03 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85446211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 365
Semi-minor axis of confidence ellipse (meter) 304
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.39031
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 85446211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-15 13:30:31

ML:0.7

Field Value
Value 0.7
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 85114381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-30 22:07:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHE. 2020-11-30T21:57:12.56 0.6 undecidable manual S 309 0.3498 50 -0.16 47
IV.CSP1.EHE. 2020-11-30T21:57:11.27 0.3 undecidable manual S 25 0.2977 50 0.09 72
IV.MMO1.EHZ. 2020-11-30T21:57:09.05 0.6 undecidable manual S 71 0.2302 50 -0.14 48
IV.FDMO.HHZ. 2020-11-30T21:57:08.64 0.3 undecidable manual S 11 0.2176 50 -0.17 72
IV.LNSS.HHZ. 2020-11-30T21:57:08.87 0.6 undecidable manual S 178 0.2203 50 -0.02 50
IV.CESI.HHZ. 2020-11-30T21:57:08.28 0.3 undecidable manual S 333 0.2041 50 -0.12 73
IV.CESX.HHE. 2020-11-30T21:57:07.64 0.3 undecidable manual P 237 0.3903 50 -0.33 68
IV.ASSB.HHE. 2020-11-30T21:57:07.51 0.3 undecidable manual P 309 0.3498 50 0.23 70
IT.MTCL.HGE. 2020-11-30T21:57:07.43 0.1 undecidable manual S 352 0.1727 119 -0.04 100
IV.MOMA.HNZ. 2020-11-30T21:57:07.25 0.3 undecidable manual P 267 0.3381 50 0.17 71
IV.CSP1.EHE. 2020-11-30T21:57:06.73 0.6 undecidable manual P 25 0.2977 50 0.34 46
IV.MC2.EHZ. 2020-11-30T21:57:06.63 0.3 undecidable manual S 53 0.1457 124 0.04 75
IV.FEMA.HNZ. 2020-11-30T21:57:06.49 0.6 undecidable manual S 6 0.1394 125 0.09 50
IV.FDMO.HHZ. 2020-11-30T21:57:05.03 0.1 undecidable manual P 11 0.2176 50 0.01 100
IV.LNSS.HHZ. 2020-11-30T21:57:05.12 0.1 undecidable manual P 178 0.2203 50 0.05 99
IV.MMO1.EHZ. 2020-11-30T21:57:05.18 0.3 undecidable manual P 71 0.2302 50 -0.06 74
IT.MTCL.HGE. 2020-11-30T21:57:04.60 0.6 undecidable manual P 352 0.1727 119 0.36 47
IV.NRCA.HHZ. 2020-11-30T21:57:04.16 0.1 undecidable manual S 80 0.0621 147 -0.14 100
IV.CESI.HHZ. 2020-11-30T21:57:04.86 0.1 undecidable manual P 333 0.2041 50 0.07 99
IV.MC2.EHZ. 2020-11-30T21:57:04.10 1.0 undecidable manual P 53 0.1457 124 0.36 23
IV.FEMA.HNZ. 2020-11-30T21:57:03.32 0.1 undecidable manual P 6 0.1394 125 -0.31 95
IV.NRCA.HHZ. 2020-11-30T21:57:02.60 0.6 undecidable manual P 80 0.0621 147 0.19 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.1 0.00019508925 0.128 AML other m 2020-11-30T21:57:04.27
IV.NRCA.HHN. ML:1.2 0.0002078022 0.1536 AML other m 2020-11-30T21:57:04.28
IV.NRCA.HNE. ML:1 0.000136681285 1.8592 AML other m 2020-11-30T21:57:05.99
IV.NRCA.HHE. ML:1 0.0001511834 1.8592 AML other m 2020-11-30T21:57:05.99
IV.CESI.HHE. ML:0.2 1.1767149E-5 0.1408 AML other m 2020-11-30T21:57:08.57
IV.CESI.HHN. ML:0.5 2.121266E-5 0.2048 AML other m 2020-11-30T21:57:08.71
IV.FDMO.HHE. ML:0.4 1.3495305E-5 0.1664 AML other m 2020-11-30T21:57:08.86
IV.FDMO.HHN. ML:0.4 1.610723E-5 0.1792 AML other m 2020-11-30T21:57:09.25
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