Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 25-11-2023 and time 20:42:50 (UTC) in region 6 km NW Sellano (PG)

A magnitude ML 1.1 earthquake occured in region: 6 km NW Sellano (PG), on

  • 25-11-2023 20:42:50 (UTC)
  • 25-11-2023 21:42:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9280, 12.8810 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.

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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 6 1079 1079
Trevi PG 12 8469 9548
Cerreto di Spoleto PG 12 1075 10623
Monte Cavallo MC 12 145 10768
Preci PG 14 724 11492
Campello sul Clitunno PG 15 2442 13934
Foligno PG 15 57155 71089
Visso MC 17 1107 72196
Serravalle di Chienti MC 17 1070 73266
Vallo di Nera PG 18 364 73630
Valtopina PG 18 1398 75028
Spello PG 19 8645 83673
Montefalco PG 19 5679 89352
Pieve Torina MC 19 1458 90810

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
45 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.1 2023-11-25
20:42:50		 42.928 12.8807 11 2023-11-25
21:02:17		 Sala Sismica INGV-Roma 123449661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-25 20:42:50 ± 0.07
Latitude 42.9280 ± 0.0036
Longitude 12.8807 ± 0.0049
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 123449661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 431
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.34534
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 123449661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-25 21:02:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2023-11-25T20:43:02.88 0.6 undecidable manual S 8 36.6411 50 -0.04 48
IV.ATCC.EHZ. 2023-11-25T20:43:02.61 0.6 undecidable manual S 326 34.5432 50 0.23 48
IV.CSP1.EHZ. 2023-11-25T20:43:01.67 0.6 undecidable manual S 55 31.9458 50 -0.01 49
IV.GAVE.EHN. 2023-11-25T20:42:59.85 0.6 undecidable manual S 178 26.1516 50 -0.29 45
IV.NRCA.HHZ. 2023-11-25T20:42:58.67 0.6 undecidable manual S 119 21.6672 50 -0.26 48
IV.FDMO.HHZ. 2023-11-25T20:42:58.50 0.6 undecidable manual S 54 20.6682 117 -0.14 50
IV.ASSB.HHZ. 2023-11-25T20:42:58.52 0.6 undecidable manual S 305 22.0668 50 -0.51 43
IV.ATCC.EHZ. 2023-11-25T20:42:57.37 1.0 positive manual P 326 34.5432 50 -0.03 24
IV.SNTG.HHZ. 2023-11-25T20:42:57.70 1.0 positive manual P 8 36.6411 50 0 24
7F.SIB1.EHZ. 2023-11-25T20:42:57.38 0.1 undecidable manual P 97 31.8459 50 0.41 92
IV.LNSS.HNE. 2023-11-25T20:42:57.91 0.1 undecidable manual P 160 38.3283 50 -0.07 94
IV.GAVE.EHN. 2023-11-25T20:42:56.04 0.1 undecidable manual P 178 26.1516 50 -0.06 96
7F.SIB3.EHZ. 2023-11-25T20:42:56.96 1.0 undecidable manual P 100 32.1456 50 -0.06 24
IV.FEMA.HNZ. 2023-11-25T20:42:56.88 0.6 undecidable manual S 75 14.2746 127 0.14 49
IV.MOMA.HNZ. 2023-11-25T20:42:56.88 0.1 undecidable manual P 242 28.749 50 0.38 95
IT.MTCL.HGZ. 2023-11-25T20:42:56.06 0.6 undecidable manual S 53 12.0768 131 -0.1 51
IV.CSP1.EHZ. 2023-11-25T20:42:56.41 0.1 undecidable manual P 55 31.9458 50 -0.59 84
IV.FDMO.HHZ. 2023-11-25T20:42:55.27 0.1 undecidable manual P 54 20.6682 117 0.04 100
IV.CESI.HHZ. 2023-11-25T20:42:55.32 0.6 undecidable manual S 13 8.7801 140 -0.03 51
IV.ASSB.HHZ. 2023-11-25T20:42:55.37 0.1 undecidable manual P 305 22.0668 50 -0.1 97
IV.MC2.EHZ. 2023-11-25T20:42:55.72 1.0 undecidable manual P 94 25.1526 50 -0.22 24
IV.NRCA.HHZ. 2023-11-25T20:42:55.29 0.6 negative manual P 119 21.6672 50 -0.12 49
IV.FEMA.HNZ. 2023-11-25T20:42:54.40 0.1 undecidable manual P 75 14.2746 127 0.26 97
IT.MTCL.HGZ. 2023-11-25T20:42:53.95 0.1 undecidable manual P 53 12.0768 131 0.15 99
IV.CESI.HHZ. 2023-11-25T20:42:53.53 0.1 positive manual P 13 8.7801 140 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.9 0.000102789365 0.2176 AML other m 2023-11-25T20:42:55.78
IV.CESI.HHN. ML:0.8 0.000091735165 0.0768 AML other m 2023-11-25T20:42:55.74
IV.CESI.HNE. ML:0.9 0.000109916365 0.1408 AML other m 2023-11-25T20:42:55.60
IV.CESI.HNN. ML:0.9 0.00010172153049999999 0.1152 AML other m 2023-11-25T20:42:55.79
IV.NRCA.HHE. ML:0.8 0.000039228741000000005 0.0896 AML other m 2023-11-25T20:42:59.21
IV.NRCA.HHN. ML:0.9 0.00005159563 0.1664 AML other m 2023-11-25T20:42:58.91
IV.NRCA.HNE. ML:1.2 0.00011327728000000001 1.2416 AML other m 2023-11-25T20:42:59.03
IV.NRCA.HNN. ML:1.4 0.00017282684999999997 1.4464 AML other m 2023-11-25T20:42:59.55
IV.ATCC.EHE. ML:1.3 0.00008426906 2.0224 AML other m 2023-11-25T20:43:14.35
IV.ATCC.EHN. ML:1.2 0.000058627365 1.6256 AML other m 2023-11-25T20:43:02.83
IV.ATCC.HNE. ML:1.4 0.000104182725 1.3184 AML other m 2023-11-25T20:43:03.76
IV.ATCC.HNN. ML:1.4 0.00010967263 1.1776 AML other m 2023-11-25T20:43:03.64
IV.SNTG.HHE. ML:1.1 0.000048234249999999996 1.0368 AML other m 2023-11-25T20:43:04.00
IV.SNTG.HHN. ML:0.4 0.0000114671709095 0.576 AML other m 2023-11-25T20:43:03.42
IV.SNTG.HNE. ML:1.4 0.00009350799 1.344 AML other m 2023-11-25T20:43:03.88
IV.SNTG.HNN. ML:1.5 0.00011898864 0.6912 AML other m 2023-11-25T20:43:03.37
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