Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 30-11-2021 and time 04:00:41 (UTC) in region 3 km S Sellano (PG)

A magnitude ML 1.4 earthquake occured in region: 3 km S Sellano (PG), on

  • 30-11-2021 04:00:41 (UTC)
  • 30-11-2021 05:00:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8680, 12.9210 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 3 1079 1079
Cerreto di Spoleto PG 5 1075 2154
Preci PG 10 724 2878
Vallo di Nera PG 12 364 3242
Campello sul Clitunno PG 13 2442 5684
Trevi PG 14 8469 14153
Visso MC 16 1107 15260
Monte Cavallo MC 16 145 15405
Norcia PG 16 4957 20362
Sant'Anatolia di Narco PG 16 564 20926
Poggiodomo PG 17 117 21043
Cascia PG 18 3217 24260
Scheggino PG 19 461 24721
Castelsantangelo sul Nera MC 19 281 25002
Ussita MC 20 444 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 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
Bulletin
Rev1000 		ML 1.4 2021-11-30
04:00:41		 42.8677 12.9208 11 2022-03-30
13:04:21		 Bollettino Sismico Italiano INGV 98461221
Reviewed
Rev100 		ML 1.5 2021-11-30
04:00:41		 42.8693 12.9228 11 2021-11-30
04:06:55		 Sala Sismica INGV-Roma 97957091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-30 04:00:41 ± 0.04
Latitude 42.8677 ± 0.0018
Longitude 12.9208 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98461221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 114
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 95
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.13310
Epicentral distance of station farthest from the epicenter (degree) 0.59355
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 97957091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-30 04:06:55

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 98461221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-13 11:29:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-11-30T04:00:58.47 0.6 undecidable manual S 16 53.3022 50 0.62 40
IV.MMO1.EHZ. 2021-11-30T04:00:52.55 0.6 undecidable manual S 84 33.1446 50 0.06 48
IV.MGAB.HNZ. 2021-11-30T04:00:52.24 1.0 undecidable manual P 275 65.8896 50 -0.47 21
IV.CSP1.EHZ. 2021-11-30T04:00:52.67 0.6 undecidable manual S 43 33.9438 50 -0.01 48
IV.ASSB.HHZ. 2021-11-30T04:00:51.23 0.6 undecidable manual S 312 28.8489 50 -0.09 48
IV.LNSS.HHZ. 2021-11-30T04:00:51.78 0.3 undecidable manual S 162 30.9468 50 -0.11 72
IV.EL6.EHZ. 2021-11-30T04:00:50.76 0.1 positive manual P 16 53.3022 50 -0.01 94
IV.FDMO.HHZ. 2021-11-30T04:00:49.56 0.6 undecidable manual S 36 23.0547 50 -0.24 47
IV.SNTG.HHZ. 2021-11-30T04:00:49.02 0.6 undecidable manual P 2 43.0236 50 -0.16 46
IV.MC2.EHZ. 2021-11-30T04:00:49.62 0.6 undecidable manual S 77 22.3554 50 0.03 49
IV.CESX.HHZ. 2021-11-30T04:00:48.68 1.0 undecidable manual P 224 39.627 50 0.02 24
IV.GAVE.EHZ. 2021-11-30T04:00:48.79 0.3 undecidable manual S 186 19.5693 119 -0.04 74
IV.MMO1.EHZ. 2021-11-30T04:00:47.64 0.3 undecidable manual P 84 33.1446 50 -0.03 72
IV.NRCA.HHZ. 2021-11-30T04:00:47.71 0.3 undecidable manual S 103 16.1727 123 -0.1 73
IV.CSP1.EHZ. 2021-11-30T04:00:47.78 0.1 positive manual P 43 33.9438 50 0 97
IT.MTCL.HGZ. 2021-11-30T04:00:47.32 0.3 undecidable manual S 24 15.3735 125 -0.27 71
IV.ARRO.EHZ. 2021-11-30T04:00:47.95 0.6 undecidable manual P 202 34.4433 50 0.09 48
IV.CESI.HHZ. 2021-11-30T04:00:47.59 0.3 undecidable manual S 355 15.2736 125 0.03 75
IV.LNSS.HHZ. 2021-11-30T04:00:47.33 0.1 negative manual P 162 30.9468 50 0 97
IV.FEMA.HNZ. 2021-11-30T04:00:47.40 0.6 undecidable manual S 45 14.7741 126 -0.03 50
IV.FDMO.HHZ. 2021-11-30T04:00:46.01 0.1 positive manual P 36 23.0547 50 -0.11 97
IV.MC2.EHZ. 2021-11-30T04:00:46.14 0.3 undecidable manual P 77 22.3554 50 0.14 72
IV.ASSB.HHZ. 2021-11-30T04:00:46.97 0.3 negative manual P 312 28.8489 50 -0.03 73
IV.GAVE.EHZ. 2021-11-30T04:00:45.68 0.1 positive manual P 186 19.5693 119 0.12 97
IV.CESI.HHZ. 2021-11-30T04:00:44.93 0.1 positive manual P 355 15.2736 125 0.11 98
IV.FEMA.HNZ. 2021-11-30T04:00:44.90 0.1 positive manual P 45 14.7741 126 0.15 97
IV.NRCA.HHZ. 2021-11-30T04:00:44.99 0.1 negative manual P 103 16.1727 123 0.02 100
IT.MTCL.HGZ. 2021-11-30T04:00:44.85 0.1 undecidable manual P 24 15.3735 125 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.0001649001 0.08 AML other m 2021-11-30T04:00:47.67
IT.MTCL.HGE. ML:3.4 0.022792835 0.0384 AML other m 2021-11-30T04:00:47.75
IT.MTCL.HGN. ML:3.4 0.022596335 0.048 AML other m 2021-11-30T04:00:47.78
IV.NRCA.HNN. ML:1.4 0.00020285915 0.0992 AML other m 2021-11-30T04:00:47.74
IV.CESI.HNN. ML:1.3 0.00017703215 0.1696 AML other m 2021-11-30T04:00:47.80
IV.CESI.HHE. ML:1.1 0.000105618975 0.16 AML other m 2021-11-30T04:00:48.13
IV.CESI.HNE. ML:1.0 0.00009849186 0.208 AML other m 2021-11-30T04:00:48.13
IV.SNTG.HHE. ML:1.0 0.000032209405 1.2384 AML other m 2021-11-30T04:00:48.19
IV.NRCA.HHN. ML:1.4 0.0002115 0.62 AML other m 2021-11-30T04:00:48.74
IV.NRCA.HHE. ML:1.4 0.00023217739999999997 0.08 AML other m 2021-11-30T04:00:48.81
IV.NRCA.HNE. ML:1.4 0.00023530475 0.1696 AML other m 2021-11-30T04:00:48.81
IV.LNSS.HNN. ML:1.6 0.00019005315 1.2192 AML other m 2021-11-30T04:00:49.09
IV.GAVE.HNN. ML:1.2 0.000113774385 0.6304 AML other m 2021-11-30T04:00:53.86
IV.GAVE.HNE. ML:1.7 0.00035204725000000006 0.1504 AML other m 2021-11-30T04:00:49.39
IV.GAVE.EHE. ML:1.7 0.00033650000000000005 0.14 AML other m 2021-11-30T04:00:49.39
IV.GAVE.EHN. ML:1.6 0.00030303155 0.2016 AML other m 2021-11-30T04:00:49.47
IV.LNSS.HNE. ML:1.5 0.00013872814 0.9216 AML other m 2021-11-30T04:00:49.73
IV.MC2.EHE. ML:1.6 0.00027522615 0.2208 AML other m 2021-11-30T04:00:51.16
IV.MC2.EHN. ML:1.6 0.0002346752 0.24 AML other m 2021-11-30T04:00:51.55
IV.ASSB.HHN. ML:1.3 0.000106358455 0.08 AML other m 2021-11-30T04:00:51.46
IV.ASSB.HHE. ML:1.3 0.000099767145 0.16 AML other m 2021-11-30T04:00:51.72
IV.LNSS.HHE. ML:1.4 0.00013035774999999998 1.9008 AML other m 2021-11-30T04:00:52.97
IV.LNSS.HHN. ML:1.3 0.00009689252500000001 0.1216 AML other m 2021-11-30T04:00:52.49
IV.SNTG.HHN. ML:1.3 0.000066698575 1.1008 AML other m 2021-11-30T04:00:53.06
IV.CSP1.EHE. ML:1.6 0.0001752739 0.2592 AML other m 2021-11-30T04:00:53.42
IV.CSP1.EHN. ML:1.5 0.000140130925 0.1984 AML other m 2021-11-30T04:00:53.43
IV.SNTG.HNN. ML:1.5 0.00009090914 0.8192 AML other m 2021-11-30T04:01:04.18
IV.SNTG.HNE. ML:1.5 0.000104257825 0.5696 AML other m 2021-11-30T04:01:05.76
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