Earthquake with magnitude of Md 1.4 on date 27-11-2021 and time 05:18:17 (UTC) in region 1 km SE Sellano (PG)

A magnitude Md 1.4 earthquake occured in region: 1 km SE Sellano (PG), on

  • 27-11-2021 05:18:17 (UTC)
  • 27-11-2021 06:18:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.883, 12.935 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
Sellano PG 1 1079 1079
Cerreto di Spoleto PG 7 1075 2154
Preci PG 9 724 2878
Monte Cavallo MC 14 145 3023
Visso MC 14 1107 4130
Vallo di Nera PG 14 364 4494
Campello sul Clitunno PG 15 2442 6936
Trevi PG 15 8469 15405
Norcia PG 16 4957 20362
Castelsantangelo sul Nera MC 18 281 20643
Ussita MC 18 444 21087
Sant'Anatolia di Narco PG 18 564 21651
Poggiodomo PG 19 117 21768
Cascia PG 19 3217 24985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
100 Km N of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
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 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
Md 1.4 2021-11-27
42.883 12.9352 10 2021-11-27
Sala Sismica INGV-Roma 97858501
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-11-27 05:18:17 ± 0.03
Latitude 42.8830 ± 0.0018
Longitude 12.9352 ± 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 97858501


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 306
Semi-minor axis of confidence ellipse (meter) 92
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 287
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.28688
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information


Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude Md
Reference to an origin 97858501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-27 05:25:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-11-27T05:18:28.87 0.6 undecidable manual S 43 0.2869 50 -0.03 49
IV.FDMO.HHZ. 2021-11-27T05:18:25.76 0.6 undecidable manual S 36 0.1898 115 0.03 49
IV.CSP1.EHZ. 2021-11-27T05:18:24.18 0.3 negative manual P 43 0.2869 50 0.03 73
IV.CESI.HHZ. 2021-11-27T05:18:23.48 0.6 undecidable manual S 350 0.1241 126 -0.06 50
IV.GAVE.EHZ. 2021-11-27T05:18:22.38 0.3 negative manual P 189 0.1934 115 -0.01 74
IV.FDMO.HHZ. 2021-11-27T05:18:22.30 0.1 undecidable manual P 36 0.1898 115 -0.02 99
IV.CESI.HHZ. 2021-11-27T05:18:21.10 0.1 undecidable manual P 350 0.1241 126 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHZ. Md:1.3 11 END duration s
IV.CESI.HHZ. Md:1.2 10 END duration s
IV.GAVE.EHZ. Md:1.4 12 END duration s
IV.CSP1.EHZ. Md:1.5 12 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download