Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 27-02-2023 and time 15:47:49 (UTC) in region 4 km NE Sellano (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km NE Sellano (PG), on

  • 27-02-2023 15:47:49 (UTC)
  • 27-02-2023 16:47:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9140, 12.9640 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 4 1079 1079
Preci PG 7 724 1803
Monte Cavallo MC 9 145 1948
Visso MC 10 1107 3055
Cerreto di Spoleto PG 11 1075 4130
Ussita MC 15 444 4574
Castelsantangelo sul Nera MC 16 281 4855
Pieve Torina MC 16 1458 6313
Norcia PG 17 4957 11270
Fiordimonte MC 17 202 11472
Serravalle di Chienti MC 18 1070 12542
Trevi PG 18 8469 21011
Vallo di Nera PG 18 364 21375
Campello sul Clitunno PG 18 2442 23817
Pievebovigliana MC 19 866 24683
Muccia MC 20 915 25598

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
90 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 2023-02-27
15:47:49		 42.9143 12.9643 11 2023-02-27
15:56:29		 Sala Sismica INGV-Roma 114859211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-27 15:47:49 ± 0.05
Latitude 42.9143 ± 0.0018
Longitude 12.9643 ± 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 114859211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 177
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) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 114859211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-27 15:56:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LINA.HHZ. 2023-02-27T15:49:23.27 3.0 positive manual Pg 21.75 0
NI.VINO.HHZ. 2023-02-27T15:49:16.71 3.0 undecidable manual Sn 2.4 0
IX.SCL3.EHZ.02 2023-02-27T15:49:09.45 3.0 undecidable manual Sn 0 0
IV.MOCO.HNZ. 2023-02-27T15:49:07.08 3.0 undecidable manual Sg 10.27 0
MN.TRI.HHZ. 2023-02-27T15:49:05.85 3.0 undecidable manual Sn -1.32 0
IV.MDI.HHZ. 2023-02-27T15:49:04.44 3.0 undecidable manual Sg 10.39 0
IV.ZEN8.EHZ. 2023-02-27T15:48:48.58 3.0 undecidable manual Sn -0.38 0
OX.MPRI.HHZ. 2023-02-27T15:48:22.83 3.0 undecidable manual Pn -1.91 0
IX.SCL3.EHZ.02 2023-02-27T15:48:21.40 3.0 undecidable manual Pn -1.95 0
IV.LRP.EHZ. 2023-02-27T15:48:01.91 3.0 negative manual Pg 2.18 0
IV.LNSS.HHE. 2023-02-27T15:48:01.30 0.6 undecidable manual S 170 35.1426 50 0.17 47
IV.CSP1.EHZ. 2023-02-27T15:47:59.07 0.3 undecidable manual S 45 27.75 50 -0.09 74
IV.GAVE.EHE. 2023-02-27T15:47:58.41 0.3 undecidable manual S 193 25.2525 50 -0.1 74
IV.MML1.EHZ. 2023-02-27T15:47:57.67 0.6 undecidable manual S 2 22.0668 50 0.01 49
IV.MC2.EHZ. 2023-02-27T15:47:56.88 0.3 undecidable manual S 91 18.2706 120 0.35 71
IV.FDMO.HHZ. 2023-02-27T15:47:56.00 0.3 undecidable manual S 36 16.872 122 -0.11 73
GU.GSCL.HHZ. 2023-02-27T15:47:56.31 3.0 positive manual Pn 2.1 0
IV.LNSS.HHE. 2023-02-27T15:47:56.04 0.1 undecidable manual P 170 35.1426 50 -0.05 97
IV.NRCA.HHZ. 2023-02-27T15:47:55.53 0.3 undecidable manual S 126 15.1737 125 -0.09 73
IV.CSP1.EHZ. 2023-02-27T15:47:54.89 0.6 negative manual P 45 27.75 50 -0.06 49
IV.GAVE.EHE. 2023-02-27T15:47:54.58 0.1 undecidable manual P 193 25.2525 50 0 99
IV.MTCL.HGZ. 2023-02-27T15:47:54.20 3.0 undecidable manual S 0
IV.CESI.HHZ. 2023-02-27T15:47:54.75 0.6 undecidable manual S 334 11.1777 134 0.2 50
IV.FDMO.HHZ. 2023-02-27T15:47:53.20 0.6 positive manual P 36 16.872 122 0.01 50
IV.MML1.EHZ. 2023-02-27T15:47:53.75 1.0 undecidable manual P 2 22.0668 50 -0.34 24
IV.MC2.EHZ. 2023-02-27T15:47:53.50 0.1 undecidable manual P 91 18.2706 120 0.07 100
IV.MTCL.HGZ. 2023-02-27T15:47:52.22 3.0 undecidable manual P 0
IV.CESI.HHZ. 2023-02-27T15:47:52.50 1.0 undecidable manual P 334 11.1777 134 0.21 25
IV.NRCA.HHZ. 2023-02-27T15:47:52.93 0.3 negative manual P 126 15.1737 125 0.02 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 0.000060426645 1.728 AML other m 2023-02-27T15:48:16.38
IV.CESI.HHN. ML:0.7 0.000061178205 1.5616 AML other m 2023-02-27T15:47:52.54
IV.CESI.HNE. ML:1.0 0.00010939487 0.704 AML other m 2023-02-27T15:48:16.20
IV.CESI.HNN. ML:1.1 0.0001597847 0.96 AML other m 2023-02-27T15:48:07.55
IV.MC2.EHE. ML:1.1 0.00009791375000000002 1.8816 AML other m 2023-02-27T15:47:53.64
IV.MC2.EHN. ML:1.0 0.00007955125000000002 0.704 AML other m 2023-02-27T15:48:01.80
IV.NRCA.HHE. ML:0.7 0.000050150465 0.0896 AML other m 2023-02-27T15:47:55.85
IV.NRCA.HHN. ML:0.9 0.000073116215 0.0896 AML other m 2023-02-27T15:47:55.75
IV.NRCA.HNE. ML:1.4 0.00024836295 0.8576 AML other m 2023-02-27T15:47:52.66
IV.NRCA.HNN. ML:1.4 0.00023993615 0.7936 AML other m 2023-02-27T15:48:20.03
IV.FDMO.HHE. ML:0.7 0.000046529455 1.9712 AML other m 2023-02-27T15:48:14.98
IV.FDMO.HHN. ML:0.9 0.00006381978499999999 1.8176 AML other m 2023-02-27T15:48:09.16
IV.MML1.EHE. ML:0.8 0.00004633825 0.1664 AML other m 2023-02-27T15:47:57.77
IV.MML1.EHN. ML:0.9 0.000051471859999999995 2.6752 AML other m 2023-02-27T15:48:20.84
IV.MML1.HNE. ML:1.3 0.00011762831500000001 1.1776 AML other m 2023-02-27T15:48:24.45
IV.MML1.HNN. ML:1.2 0.00011459958 0.7296 AML other m 2023-02-27T15:47:55.96
IV.CSP1.EHE. ML:1.6 0.0002124663 2.0352 AML other m 2023-02-27T15:48:19.90
IV.CSP1.EHN. ML:1.6 0.00019212760000000001 1.9712 AML other m 2023-02-27T15:47:57.31
IV.LRP.EHE. ML:2.0 0.00005742465000000001 0.1024 AML other m 2023-02-27T15:48:04.74
IV.LRP.EHN. ML:1.6 0.000019070515 0.0512 AML other m 2023-02-27T15:48:05.47
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