Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-11-2020 and time 21:03:40 (Italy) in region 1 km E Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km E Sellano (PG), on

  • 27-11-2020 20:03:40 (UTC)
  • 27-11-2020 21:03:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8940, 12.9430 at 13 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 1 1079 1079
Preci PG 8 724 1803
Cerreto di Spoleto PG 9 1075 2878
Monte Cavallo MC 12 145 3023
Visso MC 13 1107 4130
Vallo di Nera PG 15 364 4494
Campello sul Clitunno PG 16 2442 6936
Trevi PG 16 8469 15405
Norcia PG 17 4957 20362
Ussita MC 17 444 20806
Castelsantangelo sul Nera MC 17 281 21087
Pieve Torina MC 19 1458 22545
Sant'Anatolia di Narco PG 20 564 23109
Serravalle di Chienti MC 20 1070 24179
Fiordimonte MC 20 202 24381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
87 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 0.9 2020-11-27
20:03:40		 42.8945 12.943 13 2020-11-27
20:15:35		 Sala Sismica INGV-Roma 85055661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 20:03:40 ± 0.09
Latitude 42.8945 ± 0.0054
Longitude 12.9430 ± 0.0049
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85055661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 468
Semi-minor axis of confidence ellipse (meter) 344
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 168
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 19
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30037
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 85055661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 20:15:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EVRN.HHZ. 2020-11-27T20:05:11.63 3.0 negative manual Pg 17.209999 0
IX.MNT3.HHZ.02 2020-11-27T20:04:48.41 3.0 undecidable manual Sn -0.9 0
IV.GATE.HHZ. 2020-11-27T20:04:37.75 3.0 undecidable manual Sn 0.58 0
IV.ZONE.HHZ. 2020-11-27T20:04:36.66 3.0 negative manual Pg 9.32 0
IV.GATE.HHZ. 2020-11-27T20:04:17.61 3.0 negative manual Pg 7.9 0
IV.CRTC.HHZ. 2020-11-27T20:04:10.63 3.0 undecidable manual S 0.72 0
IV.LNSS.HHE. 2020-11-27T20:03:52.03 0.6 undecidable manual S 166 33.3444 96 0.06 48
IV.MMO1.EHZ. 2020-11-27T20:03:51.31 0.6 undecidable manual S 89 31.2465 97 -0.1 48
IV.CSP1.EHZ. 2020-11-27T20:03:51.03 0.6 undecidable manual S 44 30.5472 97 -0.19 47
IV.ASSB.HHZ. 2020-11-27T20:03:50.45 0.3 undecidable manual S 306 28.3494 98 -0.2 72
IV.ARVD.HHZ. 2020-11-27T20:03:50.45 3.0 undecidable manual P -0.53 0
IV.MC2.EHZ. 2020-11-27T20:03:49.04 0.3 undecidable manual S 85 20.0688 106 0.55 66
IV.FDMO.HHZ. 2020-11-27T20:03:48.02 0.6 undecidable manual S 37 19.6692 107 -0.36 47
IV.NRCA.HHZ. 2020-11-27T20:03:47.04 0.6 undecidable manual S 116 15.4734 115 -0.31 47
IV.MOMA.HHN. 2020-11-27T20:03:47.09 0.1 undecidable manual P 252 31.9458 97 0.14 94
IV.MMO1.EHZ. 2020-11-27T20:03:46.77 0.1 undecidable manual P 89 31.2465 97 -0.06 96
IV.CSP1.EHZ. 2020-11-27T20:03:46.82 0.1 undecidable manual P 44 30.5472 97 0.09 96
IV.CESI.HHZ. 2020-11-27T20:03:46.73 0.6 undecidable manual S 346 12.6762 124 0.04 49
IT.MTCL.HGE. 2020-11-27T20:03:46.10 0.6 undecidable manual S 23 11.9769 126 -0.43 47
IV.LNSS.HHE. 2020-11-27T20:03:46.83 0.1 undecidable manual P 166 33.3444 96 -0.33 91
IV.ASSB.HHZ. 2020-11-27T20:03:46.52 0.1 undecidable manual P 306 28.3494 98 0.13 95
IV.FDMO.HHZ. 2020-11-27T20:03:45.11 0.1 undecidable manual P 37 19.6692 107 0.02 99
IV.MC2.EHZ. 2020-11-27T20:03:45.26 0.6 undecidable manual P 85 20.0688 106 0.11 49
IV.NRCA.HHZ. 2020-11-27T20:03:44.51 0.1 undecidable manual P 116 15.4734 115 0.02 100
IV.CESI.HHZ. 2020-11-27T20:03:44.39 0.1 positive manual P 346 12.6762 124 0.28 94
IT.MTCL.HGE. 2020-11-27T20:03:44.02 0.1 undecidable manual P 23 11.9769 126 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.0 0.0000847 0.18 AML other m 2020-11-27T20:03:47.34
IV.NRCA.HHN. ML:1.0 0.00008625 0.12 AML other m 2020-11-27T20:03:47.43
IV.FDMO.HHE. ML:1.0 0.0000664 0.18 AML other m 2020-11-27T20:03:48.37
IV.CESI.HHE. ML:0.4 0.0000236650955 0.1664 AML other m 2020-11-27T20:03:47.04
IV.CESI.HHN. ML:0.7 0.000045712315 0.1152 AML other m 2020-11-27T20:03:47.03
IV.CESI.HNN. ML:1.2 0.00016520095 0.2048 AML other m 2020-11-27T20:03:53.08
IV.NRCA.HNE. ML:1.1 0.00010107212999999999 0.1792 AML other m 2020-11-27T20:03:48.46
IV.NRCA.HNN. ML:1.2 0.00014054015 0.576 AML other m 2020-11-27T20:03:47.43
IV.FDMO.HHN. ML:0.8 0.000040338144999999996 0.2048 AML other m 2020-11-27T20:03:48.36
IV.ASSB.HHE. ML:0.3 0.000010655060000000001 0.0768 AML other m 2020-11-27T20:03:51.29
IV.ASSB.HHN. ML:0.3 0.000009280305499999998 0.0768 AML other m 2020-11-27T20:03:51.25
IV.CSP1.EHE. ML:1.2 0.00006365467999999999 0.1792 AML other m 2020-11-27T20:03:51.96
IV.CSP1.EHN. ML:1.1 0.000060732075 0.2176 AML other m 2020-11-27T20:03:51.91
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