Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 26-03-2021 and time 20:58:01 (Italy) in region 3 km E Sellano (PG)

A magnitude ML 0.7 earthquake occured in region: 3 km E Sellano (PG), on

  • 26-03-2021 19:58:01 (UTC)
  • 26-03-2021 20:58:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8930, 12.9600 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.

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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 3 1079 1079
Preci PG 7 724 1803
Cerreto di Spoleto PG 9 1075 2878
Visso MC 11 1107 3985
Monte Cavallo MC 12 145 4130
Norcia PG 16 4957 9087
Ussita MC 16 444 9531
Vallo di Nera PG 16 364 9895
Castelsantangelo sul Nera MC 16 281 10176
Campello sul Clitunno PG 17 2442 12618
Trevi PG 17 8469 21087
Pieve Torina MC 19 1458 22545
Fiordimonte MC 19 202 22747
Cascia PG 20 3217 25964
Serravalle di Chienti MC 20 1070 27034

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
88 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 0.7 2021-03-26
19:58:01		 42.8927 12.96 10 2021-03-26
20:04:41		 Sala Sismica INGV-Roma 88502051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-26 19:58:01 ± 0.13
Latitude 42.8927 ± 0.0045
Longitude 12.9600 ± 0.0086
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88502051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 653
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 0.26800
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 88502051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-26 20:04:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-03-26T19:58:12.33 0.3 undecidable manual S 42 29.748 50 -0.01 76
IV.GAVE.EHZ. 2021-03-26T19:58:10.38 0.3 undecidable manual S 194 22.8549 114 0 77
IV.FDMO.HHZ. 2021-03-26T19:58:09.01 0.3 undecidable manual S 33 18.9699 118 -0.17 75
IV.MC2.EHE. 2021-03-26T19:58:09.29 0.6 undecidable manual S 84 18.7701 118 0.2 50
IV.CSP1.EHZ. 2021-03-26T19:58:07.84 0.3 undecidable manual P 42 29.748 50 -0.01 76
IV.NRCA.HNE. 2021-03-26T19:58:07.84 0.3 undecidable manual S 118 14.1747 125 0.1 77
IV.CESI.HHZ. 2021-03-26T19:58:07.52 0.3 undecidable manual S 340 13.2756 127 0.04 78
IV.MC2.EHE. 2021-03-26T19:58:06.40 0.6 undecidable manual P 84 18.7701 118 0.43 48
IT.MTCL.HGE. 2021-03-26T19:58:06.79 0.3 undecidable manual S 16 11.6772 131 -0.27 75
IV.FDMO.HHZ. 2021-03-26T19:58:06.13 0.6 positive manual P 33 18.9699 118 0.11 51
IV.FEMA.HNE. 2021-03-26T19:58:06.92 0.3 undecidable manual S 43 10.5783 133 0.14 77
IV.GAVE.EHZ. 2021-03-26T19:58:06.77 0.3 undecidable manual P 194 22.8549 114 0.05 77
IV.FEMA.HNE. 2021-03-26T19:58:05.01 0.3 undecidable manual P 43 10.5783 133 0.37 73
IV.CESI.HHZ. 2021-03-26T19:58:05.28 0.1 undecidable manual P 340 13.2756 127 0.24 100
IV.NRCA.HNE. 2021-03-26T19:58:04.44 0.3 undecidable manual P 118 14.1747 125 -0.76 64
IT.MTCL.HGE. 2021-03-26T19:58:04.39 0.3 undecidable manual P 16 11.6772 131 -0.41 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 0.000047600000000000005 0.12 AML other m 2021-03-26T19:58:07.55
IV.CESI.HHN. ML:1.0 0.0001045 0.28 AML other m 2021-03-26T19:58:07.56
IV.FDMO.HHN. ML:0.5 0.0000263 0.82 AML other m 2021-03-26T19:58:09.34
IV.FDMO.HHE. ML:0.8 0.0000452 1.2 AML other m 2021-03-26T19:58:09.22
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