Earthquake with magnitude of ML 1.2 on date 05-11-2021 and time 17:50:00 (Italy) in region 8 km SE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 8 km SE Norcia (PG), on

  • 05-11-2021 16:50:00 (UTC)
  • 05-11-2021 17:50:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.737, 13.146 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 8 4957 4957
Accumoli RI 10 667 5624
Cascia PG 11 3217 8841
Arquata del Tronto AP 13 1178 10019
Cittareale RI 13 482 10501
Amatrice RI 17 2657 13158
Poggiodomo PG 17 117 13275
Castelsantangelo sul Nera MC 18 281 13556
Preci PG 18 724 14280
Monteleone di Spoleto PG 18 599 14879
Montegallo AP 19 523 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
45 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km W of Pescara (121014 inhabitants)
94 Km W of Chieti (51815 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 1.2 2021-11-05
16:50:00
42.7372 13.1463 11 2021-11-05
16:59:25
Sala Sismica INGV-Roma 97277651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-05 16:50:00 ± 0.07
Latitude 42.7372 ± 0.0027
Longitude 13.1463 ± 0.0037
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 97277651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
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) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97277651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-05 16:59:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-11-05T16:50:11.96 0.3 undecidable manual S 352 0.3022 50 0.08 72
IV.RM33.EHZ. 2021-11-05T16:50:09.86 0.3 undecidable manual S 168 0.2338 50 0.01 74
IV.MMO1.EHZ. 2021-11-05T16:50:09.06 0.3 undecidable manual S 39 0.2095 50 -0.07 74
IV.MC2.EHZ. 2021-11-05T16:50:08.41 0.3 undecidable manual S 10 0.1772 50 0.24 72
IV.SMA1.EHZ. 2021-11-05T16:50:08.31 0.3 undecidable manual S 127 0.1754 50 0.19 72
IV.GAVE.EHZ. 2021-11-05T16:50:08.49 0.3 undecidable manual S 256 0.1907 50 -0.08 74
IV.MF5.EHZ. 2021-11-05T16:50:08.26 0.3 undecidable manual P 42 0.3399 50 0.56 64
IV.MTRA.HNZ. 2021-11-05T16:50:08.03 0.3 undecidable manual S 84 0.1844 50 -0.37 69
IV.TERO.HHZ. 2021-11-05T16:50:07.75 0.3 undecidable manual P 109 0.3552 50 -0.21 69
IV.LNSS.HHZ. 2021-11-05T16:50:07.52 0.3 undecidable manual S 210 0.1547 50 0 75
IV.CESI.HHZ. 2021-11-05T16:50:07.21 0.3 undecidable manual P 327 0.3211 50 -0.17 71
IV.CSP1.EHZ. 2021-11-05T16:50:07.92 0.3 undecidable manual P 7 0.357 50 -0.07 71
IV.FDMO.HHZ. 2021-11-05T16:50:06.91 0.3 undecidable manual P 352 0.3022 50 -0.15 71
IV.RM33.EHZ. 2021-11-05T16:50:05.92 0.3 undecidable manual P 168 0.2338 50 0.04 74
IV.MMO1.EHZ. 2021-11-05T16:50:05.38 0.3 undecidable manual P 39 0.2095 50 -0.09 73
IV.NRCA.HHZ. 2021-11-05T16:50:05.80 0.3 undecidable manual S 346 0.0989 135 -0.08 75
IV.SMA1.EHZ. 2021-11-05T16:50:05.03 0.3 undecidable manual P 127 0.1754 50 0.15 73
IV.GAVE.EHZ. 2021-11-05T16:50:05.12 0.3 undecidable manual P 256 0.1907 50 -0.02 75
IV.MTRA.HNZ. 2021-11-05T16:50:04.94 0.3 undecidable manual P 84 0.1844 50 -0.11 73
IV.MC2.EHZ. 2021-11-05T16:50:04.93 0.3 undecidable manual P 10 0.1772 50 0.01 75
IV.LNSS.HHZ. 2021-11-05T16:50:04.59 0.3 undecidable manual P 210 0.1547 50 0.05 75
IV.NRCA.HHZ. 2021-11-05T16:50:03.67 0.1 undecidable manual P 346 0.0989 135 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.3 0.0021 0.08 AML other m 2021-11-05T16:50:06.04
IV.NRCA.HNN. ML:1.8 0.0007415 0.58 AML other m 2021-11-05T16:50:06.05
IV.NRCA.HNE. ML:2.2 0.001905 0.08 AML other m 2021-11-05T16:50:06.05
IV.NRCA.HHN. ML:1.8 0.000684 0.08 AML other m 2021-11-05T16:50:06.38
IV.LNSS.HHE. ML:1.2 0.00012515 0.26 AML other m 2021-11-05T16:50:07.68
IV.LNSS.HHN. ML:1.2 0.000126 0.94 AML other m 2021-11-05T16:50:08.34
IV.SMA1.EHN. ML:1.1 9.675E-5 0.42 AML other m 2021-11-05T16:50:08.96
IV.GAVE.EHE. ML:1.4 0.0001865 1.48 AML other m 2021-11-05T16:50:09.77
IV.GAVE.EHN. ML:1.4 0.000175 1.32 AML other m 2021-11-05T16:50:09.82
IV.SMA1.EHE. ML:1.1 8.29E-5 1 AML other m 2021-11-05T16:50:09.87
IV.FDMO.HHE. ML:0.6 1.50275365E-5 0.128 AML other m 2021-11-05T16:50:12.77
IV.FDMO.HHN. ML:0.6 1.5768189065E-5 0.1024 AML other m 2021-11-05T16:50:13.36
IV.CESI.HHE. ML:0.4 1.0562145E-5 0.0896 AML other m 2021-11-05T16:50:13.02
IV.CESI.HHN. ML:0.6 1.335869E-5 0.1024 AML other m 2021-11-05T16:50:13.24
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