Earthquake with magnitude of ML 1.7 on date 22-11-2021 and time 18:51:39 (UTC) in region 2 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 2 km E Norcia (PG), on

  • 22-11-2021 18:51:39 (UTC)
  • 22-11-2021 19:51:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.794, 13.114 at 12 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 11 724 5681
Cascia PG 12 3217 8898
Castelsantangelo sul Nera MC 12 281 9179
Arquata del Tronto AP 15 1178 10357
Visso MC 15 1107 11464
Accumoli RI 16 667 12131
Cerreto di Spoleto PG 16 1075 13206
Ussita MC 17 444 13650
Poggiodomo PG 17 117 13767
Sellano PG 19 1079 14846
Montegallo AP 19 523 15369
Cittareale RI 20 482 15851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
99 Km NW 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 1.7 2021-11-22
18:51:39
42.7942 13.1143 12 2021-11-22
19:01:10
Sala Sismica INGV-Roma 97696721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-22 18:51:39 ± 0.04
Latitude 42.7942 ± 0.0018
Longitude 13.1143 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97696721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 274
Semi-minor axis of confidence ellipse (meter) 114
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33725
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 49
Type of magnitude ML
Reference to an origin 97696721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-22 19:01:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-11-22T18:52:04.33 3.0 undecidable manual S -0.41 0
IV.EL6.EHZ. 2021-11-22T18:51:59.01 3.0 undecidable manual S 0.09 0
IV.FIAM.HHZ. 2021-11-22T18:51:58.24 3.0 undecidable manual S -0.18 0
IV.CESX.HHZ. 2021-11-22T18:51:54.82 3.0 undecidable manual S -0.07 0
IV.MURB.HHZ. 2021-11-22T18:51:51.93 3.0 positive manual P 0 0
IV.EL6.EHZ. 2021-11-22T18:51:49.96 3.0 positive manual P -0.29 0
IV.MNTT.EHZ. 2021-11-22T18:51:49.27 3.0 negative manual P 0.5 0
IV.ATCC.EHZ. 2021-11-22T18:51:49.67 3.0 positive manual P -0.16 0
IV.OFFI.HHZ. 2021-11-22T18:51:49.30 3.0 undecidable manual P 0.51 0
IV.FEMA.HNZ. 2021-11-22T18:51:47.02 0.3 undecidable manual S 344 0.1745 101 0 98
IV.LNSS.HHZ. 2021-11-22T18:51:47.94 0.3 undecidable manual S 196 0.1988 98 0.2 94
IV.TERO.HHZ. 2021-11-22T18:51:47.47 3.0 undecidable manual P -0.47 0
IV.GAVE.EHZ. 2021-11-22T18:51:47.56 0.3 undecidable manual S 238 0.1907 99 0.05 97
IV.MOMA.HHZ. 2021-11-22T18:51:47.78 3.0 negative manual P 0.35 0
IV.MMO1.EHZ. 2021-11-22T18:51:47.48 0.3 undecidable manual S 56 0.188 99 0.06 97
IV.ASSB.HHZ. 2021-11-22T18:51:47.76 3.0 negative manual P -0.06 0
IV.CAMP.HHZ. 2021-11-22T18:51:46.39 0.3 undecidable manual P 140 0.3372 93 -0.16 92
IV.GUMA.HHZ. 2021-11-22T18:51:46.39 0.3 undecidable manual P 31 0.313 93 0.24 91
IV.MC2.EHZ. 2021-11-22T18:51:46.02 0.3 undecidable manual S 25 0.1295 112 0.28 94
IV.MF5.EHZ. 2021-11-22T18:51:46.60 3.0 positive manual P 0.11 0
IV.MML1.EHZ. 2021-11-22T18:51:46.41 0.3 undecidable manual P 342 0.3354 93 -0.13 93
IV.CSP1.EHZ. 2021-11-22T18:51:45.99 0.3 undecidable manual P 13 0.3049 93 -0.01 95
IV.RM33.EHZ. 2021-11-22T18:51:45.74 0.3 undecidable manual P 165 0.2941 94 -0.08 94
IV.CESI.HHZ. 2021-11-22T18:51:45.18 0.3 undecidable manual P 324 0.2608 95 -0.07 95
IV.MTRA.EHZ. 2021-11-22T18:51:44.32 0.3 undecidable manual P 100 0.2104 97 -0.08 96
IV.FDMO.HHZ. 2021-11-22T18:51:44.85 0.3 undecidable manual P 355 0.2428 95 -0.1 95
IV.LNSS.HHZ. 2021-11-22T18:51:44.17 0.3 undecidable manual P 196 0.1988 98 -0.03 97
IV.SMA1.EHZ. 2021-11-22T18:51:44.71 0.3 undecidable manual P 135 0.2302 96 -0.03 97
IV.GAVE.EHZ. 2021-11-22T18:51:44.17 0.3 undecidable manual P 238 0.1907 99 0.1 96
IT.MTCL.HGZ. 2021-11-22T18:51:44.39 0.3 undecidable manual P 337 0.2167 97 -0.11 95
IV.MC2.EHZ. 2021-11-22T18:51:43.21 0.3 undecidable manual P 25 0.1295 112 0.16 96
IV.MMO1.EHZ. 2021-11-22T18:51:43.97 0.3 undecidable manual P 56 0.188 99 -0.05 97
IV.NRCA.HNZ. 2021-11-22T18:51:43.60 0.3 undecidable manual S 360 0.0396 155 -0.2 97
IV.FEMA.HNZ. 2021-11-22T18:51:43.78 0.3 undecidable manual P 344 0.1745 101 -0.01 98
IV.NRCA.HNZ. 2021-11-22T18:51:41.97 0.3 undecidable manual P 360 0.0396 155 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.6 0.005 0.14 AML other m 2021-11-22T18:51:43.65
IV.NRCA.HNN. ML:2.5 0.004245 0.12 AML other m 2021-11-22T18:51:43.65
IV.NRCA.HNE. ML:2.7 0.007275 0.18 AML other m 2021-11-22T18:51:43.74
IV.NRCA.HHE. ML:2.7 0.00743 0.18 AML other m 2021-11-22T18:51:43.74
IV.MC2.EHE. ML:2.1 0.00111 1.44 AML other m 2021-11-22T18:51:46.19
IV.MC2.EHN. ML:2.1 0.0010915 0.24 AML other m 2021-11-22T18:51:47.99
IV.MMO1.EHE. ML:1.6 0.0002945 0.48 AML other m 2021-11-22T18:51:48.36
IV.MMO1.EHN. ML:1.8 0.0004065 0.84 AML other m 2021-11-22T18:51:48.68
IV.GAVE.EHE. ML:1.8 0.0004015 0.12 AML other m 2021-11-22T18:51:48.40
IV.LNSS.HHE. ML:1.8 0.0003945 0.12 AML other m 2021-11-22T18:51:48.63
IV.LNSS.HHN. ML:1.7 0.000326 0.54 AML other m 2021-11-22T18:51:48.64
IV.MTRA.EHN. ML:1.6 0.0002225 0.36 AML other m 2021-11-22T18:51:48.82
IV.MTRA.EHE. ML:1.7 0.0003255 1.24 AML other m 2021-11-22T18:51:49.67
IV.GAVE.EHN. ML:1.7 0.000355 1.42 AML other m 2021-11-22T18:51:49.82
IV.FDMO.HHE. ML:1.6 0.000199 0.16 AML other m 2021-11-22T18:51:49.71
IV.CESI.HHN. ML:1.8 0.000296 0.62 AML other m 2021-11-22T18:51:49.79
IV.SMA1.EHE. ML:1.7 0.000254 0.34 AML other m 2021-11-22T18:51:49.98
IV.CESI.HHE. ML:1.6 0.000176 1.1 AML other m 2021-11-22T18:51:50.71
IV.FDMO.HHN. ML:1.5 0.000149 1.08 AML other m 2021-11-22T18:51:51.81
IV.RM33.EHN. ML:1.7 0.000199 0.28 AML other m 2021-11-22T18:51:51.37
IV.RM33.EHE. ML:1.4 0.000113 0.52 AML other m 2021-11-22T18:51:52.26
IV.GUMA.HHE. ML:1.8 0.0002395 1.1 AML other m 2021-11-22T18:51:52.85
IV.CSP1.EHN. ML:2 0.0004175 0.9 AML other m 2021-11-22T18:51:52.38
IV.CSP1.EHE. ML:1.8 0.000261 0.26 AML other m 2021-11-22T18:51:52.61
IV.MML1.EHN. ML:1.4 0.00010025 0.68 AML other m 2021-11-22T18:51:52.49
IV.CAMP.HHE. ML:1.2 5.705E-5 0.62 AML other m 2021-11-22T18:51:52.87
IV.CAMP.HHN. ML:1.2 5.685E-5 0.42 AML other m 2021-11-22T18:51:53.23
IV.SMA1.EHN. ML:1.6 0.000215 1.42 AML other m 2021-11-22T18:51:53.76
IV.GUMA.HHN. ML:1.8 0.0002305 0.78 AML other m 2021-11-22T18:51:54.19
IV.MML1.EHE. ML:1.4 9.57E-5 0.7 AML other m 2021-11-22T18:51:54.63
IV.MOMA.HHE. ML:2 0.0002695 0.26 AML other m 2021-11-22T18:51:55.39
IV.MOMA.HNE. ML:2 0.000278 0.26 AML other m 2021-11-22T18:51:55.52
IV.ASSB.HHE. ML:1.7 0.000132 0.58 AML other m 2021-11-22T18:51:55.89
IV.ASSB.HHN. ML:1.7 0.00014 0.16 AML other m 2021-11-22T18:51:56.09
IV.MOMA.HNN. ML:1.8 0.0001835 0.68 AML other m 2021-11-22T18:51:56.19
IV.MOMA.HHN. ML:1.8 0.000187 0.28 AML other m 2021-11-22T18:51:56.19
IV.CESX.HHE. ML:1.3 6.005E-5 1.48 AML other m 2021-11-22T18:51:56.03
IV.CESX.HHN. ML:1.4 6.72E-5 0.76 AML other m 2021-11-22T18:51:57.89
IV.EL6.EHN. ML:1.7 0.000103469795 0.2816 AML other m 2021-11-22T18:52:00.21
IV.FIAM.HHN. ML:1.2 2.92E-5 1.24 AML other m 2021-11-22T18:51:58.22
IV.ATCC.EHE. ML:1.7 0.0001098 0.46 AML other m 2021-11-22T18:51:59.38
IV.FIAM.HHE. ML:1.1 2.48E-5 0.64 AML other m 2021-11-22T18:51:59.88
IV.ATCC.EHN. ML:1.6 8.775E-5 0.64 AML other m 2021-11-22T18:51:59.57
IV.EL6.EHE. ML:1.8 0.000127 1.34 AML other m 2021-11-22T18:52:00.12
IV.ARVD.HHE. ML:1 1.6016412E-5 0.1792 AML other m 2021-11-22T18:52:05.54
IV.MURB.HHE. ML:2 0.000172 1.26 AML other m 2021-11-22T18:52:04.88
IV.MURB.HHN. ML:2 0.0001605 0.96 AML other m 2021-11-22T18:52:04.28
IV.ARVD.HHN. ML:1.6 0 0.2432 AML other m 2021-11-22T18:52:05.76
IV.TERO.HNE. ML:1.6 0.0001222216 0.128 AML other m 2021-11-22T18:51:55.21
IV.TERO.HNN. ML:1.5 0.00010025398 0.0896 AML other m 2021-11-22T18:51:54.25
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