Earthquake with magnitude of ML 1.4 on date 19-11-2021 and time 01:29:11 (Italy) in region 7 km SE Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 7 km SE Norcia (PG), on

  • 19-11-2021 00:29:11 (UTC)
  • 19-11-2021 01:29:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.75, 13.164 at 9 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 9 667 5624
Arquata del Tronto AP 11 1178 6802
Cascia PG 13 3217 10019
Cittareale RI 15 482 10501
Castelsantangelo sul Nera MC 16 281 10782
Amatrice RI 17 2657 13439
Montegallo AP 17 523 13962
Preci PG 18 724 14686
Poggiodomo PG 19 117 14803

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km W of Pescara (121014 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
93 Km W of Chieti (51815 inhabitants)
94 Km E of Viterbo (67173 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 1.4 2021-11-19
00:29:11
42.7498 13.1638 9 2021-11-19
00:35:36
Sala Sismica INGV-Roma 97573341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-19 00:29:11 ± 0.1
Latitude 42.7498 ± 0.0027
Longitude 13.1638 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97573341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 454
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.32196
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 97573341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-19 00:35:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-11-19T00:29:24.54 0.3 undecidable manual S 42 0.322 50 0.48 66
IV.RM33.EHZ. 2021-11-19T00:29:21.23 0.1 undecidable manual S 171 0.2437 108 -0.17 95
IV.LNSS.HHZ. 2021-11-19T00:29:19.05 0.1 undecidable manual S 212 0.1727 114 0.19 96
IV.MMO1.EHZ. 2021-11-19T00:29:19.50 0.1 undecidable manual S 39 0.1916 112 -0.02 100
IV.SMA1.EHZ. 2021-11-19T00:29:19.43 0.1 undecidable manual S 133 0.1736 114 0.55 89
IV.MC2.EHZ. 2021-11-19T00:29:18.53 0.1 undecidable manual S 6 0.1628 116 0.03 100
IV.MTRA.HNZ. 2021-11-19T00:29:18.74 0.1 undecidable manual S 88 0.1709 115 -0.05 99
IV.MF5.EHZ. 2021-11-19T00:29:18.63 0.1 undecidable manual P 42 0.322 50 -0.14 95
IV.NRCA.HHZ. 2021-11-19T00:29:16.33 0.1 undecidable manual S 337 0.0917 131 0.14 99
IV.RM33.EHZ. 2021-11-19T00:29:16.98 0.1 undecidable manual P 171 0.2437 108 -0.26 94
IV.MMO1.EHZ. 2021-11-19T00:29:15.87 0.1 undecidable manual P 39 0.1916 112 -0.28 94
IV.SMA1.EHZ. 2021-11-19T00:29:15.67 0.1 undecidable manual P 133 0.1736 114 -0.11 98
IV.MC2.EHZ. 2021-11-19T00:29:15.41 0.1 undecidable manual P 6 0.1628 116 -0.16 97
IV.LNSS.HHZ. 2021-11-19T00:29:15.73 0.1 undecidable manual P 212 0.1727 114 -0.04 100
IV.MTRA.HNZ. 2021-11-19T00:29:15.61 0.1 undecidable manual P 88 0.1709 115 -0.12 98
IV.NRCA.HHZ. 2021-11-19T00:29:14.37 0.1 negative manual P 337 0.0917 131 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.000443 0.12 AML other m 2021-11-19T00:29:16.57
IV.NRCA.HHN. ML:1.2 0.0002085 0.62 AML other m 2021-11-19T00:29:16.92
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