Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 01-03-2021 and time 03:56:55 (Italy) in region 6 km SE Nocera Umbra (PG)

A magnitude ML 0.5 earthquake occured in region: 6 km SE Nocera Umbra (PG), on

  • 01-03-2021 02:56:55 (UTC)
  • 01-03-2021 03:56:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0650, 12.8350 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
Nocera Umbra PG 6 5839 5839
Valtopina PG 7 1398 7237
Serravalle di Chienti MC 10 1070 8307
Sefro MC 13 422 8729
Spello PG 15 8645 17374
Monte Cavallo MC 16 145 17519
Fiuminata MC 16 1402 18921
Foligno PG 16 57155 76076
Muccia MC 17 915 76991
Pieve Torina MC 18 1458 78449
Pioraco MC 18 1134 79583
Assisi PG 18 28299 107882
Gualdo Tadino PG 19 15208 123090

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
58 Km N of Terni (111501 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
88 Km S of Fano (60888 inhabitants)
89 Km SE of Arezzo (99543 inhabitants)
92 Km NW of L'Aquila (69753 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
94 Km S of Pesaro (94582 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 0.5 2021-03-01
02:56:55		 43.0647 12.8348 10 2021-03-01
23:58:10		 Sala Sismica INGV-Roma 87613061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-01 02:56:55 ± 0.04
Latitude 43.0647 ± 0.0018
Longitude 12.8348 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87613061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 232
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
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 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.32825
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 87613061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-01 23:58:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-03-01T02:57:08.45 0.3 undecidable manual S 36 36.4413 50 0.11 71
IV.NRCA.HHZ. 2021-03-01T02:57:07.71 0.3 undecidable manual S 138 34.2435 50 -0.04 73
IV.EL6.EHZ. 2021-03-01T02:57:03.13 0.1 undecidable manual P 36 36.4413 50 0.01 97
IV.FDMO.HHZ. 2021-03-01T02:57:03.96 0.3 undecidable manual S 99 20.6682 117 -0.08 74
IV.ATCC.EHZ. 2021-03-01T02:57:03.89 0.3 undecidable manual S 310 20.6682 117 -0.14 73
IV.NRCA.HHZ. 2021-03-01T02:57:02.67 0.1 undecidable manual P 138 34.2435 50 -0.11 96
IT.FOPC.HGE. 2021-03-01T02:57:02.46 0.3 undecidable manual S 225 14.9739 125 0.13 74
IV.MML1.EHE. 2021-03-01T02:57:01.53 0.3 undecidable manual S 64 12.3765 130 -0.06 75
IV.ATCC.EHZ. 2021-03-01T02:57:00.59 0.1 undecidable manual P 310 20.6682 117 -0.04 99
IV.FDMO.HHZ. 2021-03-01T02:57:00.63 0.1 undecidable manual P 99 20.6682 117 -0.01 100
IV.CESI.HHZ. 2021-03-01T02:57:00.59 0.3 undecidable manual S 139 8.6802 140 -0.11 75
IT.FOPC.HGE. 2021-03-01T02:56:59.58 1.0 undecidable manual P 225 14.9739 125 -0.07 25
IV.MML1.EHE. 2021-03-01T02:56:59.38 0.1 undecidable manual P 64 12.3765 130 0.15 99
IV.CESI.HHZ. 2021-03-01T02:56:58.88 0.1 undecidable manual P 139 8.6802 140 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.8 0.00003985 0.14 AML other m 2021-03-01T02:57:04.10
IV.FDMO.HHE. ML:0.6 0.000025750000000000002 0.38 AML other m 2021-03-01T02:57:04.45
IV.CESI.HHE. ML:0.0 0.0000173058455 0.0992 AML other m 2021-03-01T02:57:01.67
IV.CESI.HHN. ML:0.2 0.000019211909499999997 0.1408 AML other m 2021-03-01T02:57:01.25
IV.ATCC.EHE. ML:0.6 0.000027796625 0.1008 AML other m 2021-03-01T02:57:04.21
IV.ATCC.EHN. ML:0.3 0.0000135847075 0.12 AML other m 2021-03-01T02:57:04.18
IV.NRCA.HHN. ML:0.7 0.000019018495 0.1408 AML other m 2021-03-01T02:57:07.99
IV.EL6.EHN. ML:0.7 0.000017777314999999998 0.2 AML other m 2021-03-01T02:57:08.62
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