Earthquake with magnitude of ML 1.9 on date 01-12-2021 and time 06:06:17 (Italy) in region 1 km E Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 1 km E Norcia (PG), on

  • 01-12-2021 05:06:17 (UTC)
  • 01-12-2021 06:06:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.795, 13.106 at 10 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 1 4957 4957
Preci PG 11 724 5681
Cascia PG 11 3217 8898
Castelsantangelo sul Nera MC 12 281 9179
Visso MC 15 1107 10286
Cerreto di Spoleto PG 16 1075 11361
Arquata del Tronto AP 16 1178 12539
Accumoli RI 16 667 13206
Poggiodomo PG 17 117 13323
Ussita MC 17 444 13767
Sellano PG 18 1079 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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 1.9 2021-12-01
05:06:17
42.7948 13.1057 10 2021-12-01
05:15:30
Sala Sismica INGV-Roma 97998731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 05:06:17 ± 0.04
Latitude 42.7948 ± 0.0018
Longitude 13.1057 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97998731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41009
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 97998731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 05:15:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-12-01T05:06:48.25 3.0 undecidable manual S 0.63 0
IV.SSFR.HHZ. 2021-12-01T05:06:42.56 3.0 undecidable manual S 0.42 0
IV.CING.HHZ. 2021-12-01T05:06:38.64 3.0 undecidable manual S -0.24 0
IV.ASSB.HHZ. 2021-12-01T05:06:32.59 0.3 undecidable manual S 307 0.4101 50 0.1 70
IV.ARVD.HHZ. 2021-12-01T05:06:31.09 3.0 negative manual P -0.82 0
IV.GUMA.HHZ. 2021-12-01T05:06:30.08 0.3 undecidable manual S 32 0.3157 50 0.38 68
IV.CAMP.HHZ. 2021-12-01T05:06:30.33 0.3 undecidable manual S 139 0.3417 50 -0.14 71
IV.RM33.EHZ. 2021-12-01T05:06:29.11 0.3 undecidable manual S 164 0.2968 50 -0.02 73
IV.CSP1.EHZ. 2021-12-01T05:06:29.30 0.3 undecidable manual S 14 0.3058 50 -0.09 72
IV.FOSV.EHZ. 2021-12-01T05:06:29.11 3.0 negative manual P 0.02 0
IV.ATCC.EHZ. 2021-12-01T05:06:28.26 3.0 undecidable manual P -0.07 0
IV.FIAM.HHZ. 2021-12-01T05:06:28.18 3.0 negative manual P -0.27 0
IV.FDMO.HHZ. 2021-12-01T05:06:27.23 0.3 undecidable manual S 357 0.2419 50 -0.27 70
IV.OFFI.HHZ. 2021-12-01T05:06:27.69 3.0 positive manual P 0.66 0
IV.CESI.HHZ. 2021-12-01T05:06:27.82 0.3 undecidable manual S 325 0.2563 50 -0.11 72
IV.SMA1.EHZ. 2021-12-01T05:06:27.75 0.3 undecidable manual S 134 0.2356 50 0.43 68
IV.ASSB.HHZ. 2021-12-01T05:06:26.26 0.1 undecidable manual P 307 0.4101 50 0.01 95
IV.CESX.HHZ. 2021-12-01T05:06:26.62 3.0 negative manual P 0.01 0
IV.LNSS.HHZ. 2021-12-01T05:06:26.10 0.3 undecidable manual S 194 0.1979 115 -0.05 74
IV.MMO1.EHZ. 2021-12-01T05:06:25.68 0.3 undecidable manual S 57 0.1925 116 -0.29 70
IV.GAVE.EHZ. 2021-12-01T05:06:25.87 0.3 undecidable manual S 237 0.1862 117 0.13 73
IV.CAMP.HHZ. 2021-12-01T05:06:25.00 0.3 undecidable manual P 139 0.3417 50 -0.08 72
IV.TERO.HHZ. 2021-12-01T05:06:25.93 3.0 undecidable manual P -0.29 0
IV.CSP1.EHZ. 2021-12-01T05:06:24.41 0.1 undecidable manual P 14 0.3058 50 -0.05 97
IV.GUMA.HHZ. 2021-12-01T05:06:24.80 0.1 undecidable manual P 32 0.3157 50 0.16 94
IV.MF5.EHZ. 2021-12-01T05:06:24.98 0.1 undecidable manual P 53 0.3229 50 0.22 93
IV.MC2.EHZ. 2021-12-01T05:06:24.19 0.3 undecidable manual S 28 0.1313 125 0.25 72
IV.RM33.EHZ. 2021-12-01T05:06:24.07 0.1 undecidable manual P 164 0.2968 50 -0.24 93
IV.SMA1.EHZ. 2021-12-01T05:06:23.14 0.1 undecidable manual P 134 0.2356 50 -0.12 97
IV.FDMO.HHZ. 2021-12-01T05:06:23.25 0.1 undecidable manual P 357 0.2419 50 -0.12 96
IV.CESI.HHZ. 2021-12-01T05:06:23.59 0.1 undecidable manual P 325 0.2563 50 -0.03 98
IT.MTCL.HGZ. 2021-12-01T05:06:22.83 0.1 undecidable manual P 339 0.2131 50 -0.06 98
IV.MMO1.EHZ. 2021-12-01T05:06:22.30 0.1 undecidable manual P 57 0.1925 116 -0.19 96
IV.GAVE.EHZ. 2021-12-01T05:06:22.48 0.1 undecidable manual P 237 0.1862 117 0.13 97
IV.LNSS.HHZ. 2021-12-01T05:06:22.58 0.1 undecidable manual P 194 0.1979 115 -0.01 99
IV.MC2.EHZ. 2021-12-01T05:06:21.49 0.1 undecidable manual P 28 0.1313 125 0.18 97
IV.NRCA.HHZ. 2021-12-01T05:06:21.40 0.3 undecidable manual S 9 0.0387 157 -0.22 74
IV.NRCA.HHZ. 2021-12-01T05:06:20.11 0.1 undecidable manual P 9 0.0387 157 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.4 0.00411 0.08 AML other m 2021-12-01T05:06:21.51
IV.NRCA.HHN. ML:2.7 0.00825 0.08 AML other m 2021-12-01T05:06:21.46
IV.NRCA.HNN. ML:2.6 0.00738 0.1 AML other m 2021-12-01T05:06:21.46
IV.NRCA.HHE. ML:2.4 0.003965 0.38 AML other m 2021-12-01T05:06:21.50
IV.MC2.EHE. ML:2.3 0.002 0.6 AML other m 2021-12-01T05:06:24.27
IV.MMO1.EHN. ML:2 0.0006855 1.22 AML other m 2021-12-01T05:06:25.87
IV.MMO1.EHE. ML:1.9 0.0004935 0.7 AML other m 2021-12-01T05:06:25.55
IV.MC2.EHN. ML:2.4 0.00219 1.2 AML other m 2021-12-01T05:06:25.32
IV.GAVE.EHN. ML:2 0.0006645 0.26 AML other m 2021-12-01T05:06:26.52
IV.LNSS.HHN. ML:2.2 0.000957 0.14 AML other m 2021-12-01T05:06:26.87
IV.LNSS.HNN. ML:2.2 0.0009585 0.14 AML other m 2021-12-01T05:06:26.87
IV.LNSS.HHE. ML:2.2 0.0010265 0.8 AML other m 2021-12-01T05:06:27.42
IV.LNSS.HNE. ML:2.2 0.0009865 0.82 AML other m 2021-12-01T05:06:27.43
IV.GAVE.EHE. ML:2 0.0007825 0.24 AML other m 2021-12-01T05:06:27.58
IV.FDMO.HHN. ML:1.8 0.000308 0.42 AML other m 2021-12-01T05:06:27.71
IV.CESI.HHE. ML:1.4 0.00014 0.58 AML other m 2021-12-01T05:06:27.97
IV.CESI.HHN. ML:1.6 0.000203 0.52 AML other m 2021-12-01T05:06:28.32
IV.FDMO.HHE. ML:1.7 0.000256 0.62 AML other m 2021-12-01T05:06:28.38
IV.CSP1.EHE. ML:2 0.0003675 0.9 AML other m 2021-12-01T05:06:29.51
IV.CSP1.EHN. ML:2 0.000462 0.32 AML other m 2021-12-01T05:06:30.25
IV.RM33.EHE. ML:1.8 0.0002505 1.04 AML other m 2021-12-01T05:06:30.81
IV.RM33.EHN. ML:1.6 0.0001655 0.26 AML other m 2021-12-01T05:06:30.18
IV.SMA1.EHE. ML:1.7 0.000303 1.4 AML other m 2021-12-01T05:06:30.07
IV.SMA1.EHN. ML:1.8 0.000325 1.72 AML other m 2021-12-01T05:06:30.91
IV.GUMA.HHE. ML:1.8 0.000247 1.48 AML other m 2021-12-01T05:06:30.95
IV.GUMA.HHN. ML:1.8 0.000287 0.58 AML other m 2021-12-01T05:06:33.02
IV.SAP2.EHN. ML:2.3 0.0007085 0.52 AML other m 2021-12-01T05:06:33.16
IV.SAP2.EHE. ML:1.7 0.0001745 0.2 AML other m 2021-12-01T05:06:33.30
IV.ASSB.HHN. ML:1.5 8.26E-5 0.78 AML other m 2021-12-01T05:06:34.11
IV.ASSB.HHE. ML:1.4 8.21E-5 0.5 AML other m 2021-12-01T05:06:34.79
IV.SSFR.HHN. ML:1.7 6.94E-5 0.78 AML other m 2021-12-01T05:06:43.86
IV.FOSV.EHE. ML:1.3 4.155E-5 0.42 AML other m 2021-12-01T05:06:43.98
IV.SSFR.HHE. ML:1.7 7.395E-5 0.18 AML other m 2021-12-01T05:06:44.28
IV.FOSV.EHN. ML:1.2 3.575E-5 1.58 AML other m 2021-12-01T05:06:46.91
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