Earthquake with magnitude of ML 0.8 on date 27-11-2021 and time 20:24:36 (Italy) in region 2 km W Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km W Norcia (PG), on

  • 27-11-2021 19:24:36 (UTC)
  • 27-11-2021 20:24:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.796, 13.073 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 10 724 5681
Cascia PG 10 3217 8898
Castelsantangelo sul Nera MC 13 281 9179
Cerreto di Spoleto PG 13 1075 10254
Poggiodomo PG 15 117 10371
Visso MC 15 1107 11478
Sellano PG 16 1079 12557
Vallo di Nera PG 17 364 12921
Ussita MC 17 444 13365
Accumoli RI 18 667 14032
Arquata del Tronto AP 19 1178 15210
Monteleone di Spoleto PG 19 599 15809

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.8 2021-11-27
19:24:36
42.7958 13.0732 11 2021-11-27
19:50:50
Sala Sismica INGV-Roma 97877691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-27 19:24:36 ± 0.04
Latitude 42.7958 ± 0.0027
Longitude 13.0732 ± 0.0037
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97877691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 314
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24282
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 97877691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-27 19:50:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-11-27T19:26:10.20 3.0 undecidable manual Sn -2.32 0
IV.TREG.EHZ. 2021-11-27T19:26:05.56 3.0 undecidable manual Sg 20.4 0
AC.VLO.HHZ. 2021-11-27T19:26:03.99 3.0 negative manual Pg 22.6 0
IV.MSSA.HHZ. 2021-11-27T19:25:48.30 3.0 undecidable manual Sn 18.809999 0
IV.HAGA.HHZ. 2021-11-27T19:25:42.11 3.0 undecidable manual Pn 8.3 0
OT.OT17.EHZ. 2021-11-27T19:25:41.63 3.0 undecidable manual Sg 2.11 0
IT.ORP.HGZ. 2021-11-27T19:25:40.60 3.0 undecidable manual Sg 0.21 0
GU.IMI.HHZ. 2021-11-27T19:25:35.22 3.0 negative manual Pg 34.950001 0
IV.PP3.EHZ. 2021-11-27T19:25:21.52 3.0 undecidable manual Sg 2.17 0
IV.MURB.HHZ. 2021-11-27T19:25:15.57 3.0 undecidable manual Sg 6.58 0
IV.CET2.HHZ. 2021-11-27T19:25:12.88 3.0 undecidable manual Pn -3.35 0
IV.FERS.EHZ. 2021-11-27T19:25:05.16 3.0 negative manual Pn 10.08 0
OT.OT13.EHZ. 2021-11-27T19:25:02.45 3.0 positive manual Pn -3.35 0
IT.ORP.HGZ. 2021-11-27T19:24:57.29 3.0 positive manual Pn -2.32 0
IV.FDMO.HHZ. 2021-11-27T19:24:46.00 0.3 undecidable manual S 2 0.241 91 -0.13 70
IV.CESI.HHZ. 2021-11-27T19:24:46.08 0.3 undecidable manual S 329 0.2428 91 -0.11 71
IV.MMO1.HNE. 2021-11-27T19:24:45.38 0.3 undecidable manual S 61 0.2131 91 0.08 73
IV.LNSS.HHZ. 2021-11-27T19:24:44.61 0.3 undecidable manual S 187 0.1943 91 -0.15 74
IV.GAVE.EHZ. 2021-11-27T19:24:44.10 0.3 undecidable manual S 232 0.1673 92 0.15 70
IV.MC2.EHZ. 2021-11-27T19:24:43.50 0.3 undecidable manual S 36 0.143 94 0.26 72
IV.LAV9.HNZ. 2021-11-27T19:24:43.82 3.0 negative manual P 2.94 0
IV.CESI.HHZ. 2021-11-27T19:24:42.22 0.1 undecidable manual P 329 0.2428 91 0.11 96
IV.BARO.EHZ. 2021-11-27T19:24:42.70 3.0 undecidable manual P 5.14 0
IV.LNSS.HHZ. 2021-11-27T19:24:41.22 0.1 undecidable manual P 187 0.1943 91 -0.06 98
IV.MMO1.HNE. 2021-11-27T19:24:41.62 0.1 undecidable manual P 61 0.2131 91 0.02 98
IV.FDMO.HHZ. 2021-11-27T19:24:41.96 0.1 undecidable manual P 2 0.241 91 -0.11 95
IV.MC2.EHZ. 2021-11-27T19:24:40.53 0.1 undecidable manual P 36 0.143 94 0.12 98
IV.GAVE.EHZ. 2021-11-27T19:24:40.85 0.1 undecidable manual P 232 0.1673 92 0.03 97
IV.NRCA.HHZ. 2021-11-27T19:24:40.64 0.3 undecidable manual S 39 0.0486 146 -0.2 73
IV.NRCA.HHZ. 2021-11-27T19:24:39.09 0.1 undecidable manual P 39 0.0486 146 0.07 100
IV.SRES.HHZ. 2021-11-27T19:24:37.59 3.0 undecidable manual Pn -1.37 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.7 7.23352E-5 0.0768 AML other m 2021-11-27T19:24:40.92
IV.NRCA.HHN. ML:1 0.0001372863 0.1024 AML other m 2021-11-27T19:24:40.70
IV.MTGR.HHN. ML:4.4 0.0005375 0.8 AML other m 2021-11-27T19:26:13.38
IV.MTGR.HHE. ML:4.1 0.0002955 0.98 AML other m 2021-11-27T19:26:17.25
IV.NRCA.HNE. ML:0.6 6.636606E-5 0.064 AML other m 2021-11-27T19:24:40.95
IV.NRCA.HNN. ML:1 0.0001439411 0.1408 AML other m 2021-11-27T19:24:40.77
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download