Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 26-03-2021 and time 01:51:42 (UTC) in region 5 km NE Nocera Umbra (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Nocera Umbra (PG), on

  • 26-03-2021 01:51:42 (UTC)
  • 26-03-2021 02:51:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1430, 12.8320 at 9 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 5 5839 5839
Sefro MC 10 422 6261
Fiuminata MC 10 1402 7663
Gualdo Tadino PG 11 15208 22871
Valtopina PG 11 1398 24269
Serravalle di Chienti MC 13 1070 25339
Pioraco MC 13 1134 26473
Esanatoglia MC 15 2034 28507
Fossato di Vico PG 18 2840 31347
Muccia MC 19 915 32262
Valfabbrica PG 19 3389 35651
Matelica MC 19 9981 45632
Camerino MC 19 6974 52606
Assisi PG 19 28299 80905
Castelraimondo MC 20 4587 85492

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
66 Km N of Terni (111501 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
79 Km S of Fano (60888 inhabitants)
85 Km E of Arezzo (99543 inhabitants)
86 Km S of Pesaro (94582 inhabitants)
89 Km NW of Teramo (54892 inhabitants)
99 Km NW of L'Aquila (69753 inhabitants)
100 Km NE of Viterbo (67173 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 0.8 2021-03-26
01:51:42		 43.1432 12.8325 9 2021-03-26
02:20:39		 Sala Sismica INGV-Roma 88476541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-26 01:51:42 ± 0.05
Latitude 43.1432 ± 0.0018
Longitude 12.8325 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88476541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 271
Semi-minor axis of confidence ellipse (meter) 246
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
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) 165
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.14659
Epicentral distance of station farthest from the epicenter (degree) 0.37142
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 88476541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-26 02:20:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-03-26T01:51:56.64 0.6 undecidable manual S 146 41.2254 50 0.21 46
IV.MURB.HHZ. 2021-03-26T01:51:52.90 0.6 undecidable manual S 298 28.2495 108 0.12 48
IV.NRCA.HHZ. 2021-03-26T01:51:50.44 0.1 undecidable manual P 146 41.2254 50 -0.11 94
IV.ATCC.EHZ. 2021-03-26T01:51:49.08 0.3 undecidable manual S 287 16.2726 119 0.13 73
IV.ASSB.HHZ. 2021-03-26T01:51:49.46 0.3 undecidable manual S 232 17.9709 117 -0.01 75
IV.FOSV.EHZ. 2021-03-26T01:51:49.32 0.3 undecidable manual S 341 17.7711 117 -0.1 73
IV.CESI.HHZ. 2021-03-26T01:51:49.03 0.3 undecidable manual S 159 16.3725 119 0.03 75
IV.MURB.HHZ. 2021-03-26T01:51:48.33 0.1 undecidable manual P 298 28.2495 108 -0.11 96
IV.FOSV.EHZ. 2021-03-26T01:51:46.61 0.1 undecidable manual P 341 17.7711 117 0.11 98
IV.CESI.HHZ. 2021-03-26T01:51:46.26 0.1 undecidable manual P 159 16.3725 119 0.01 100
IV.ATCC.EHZ. 2021-03-26T01:51:46.22 0.1 undecidable manual P 287 16.2726 119 -0.01 100
IV.ASSB.HHZ. 2021-03-26T01:51:46.43 0.1 undecidable manual P 232 17.9709 117 -0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.7 0.0000421 1.04 AML other m 2021-03-26T01:51:49.99
IV.ATCC.EHE. ML:0.7 0.00004305 0.72 AML other m 2021-03-26T01:51:50.16
IV.CESI.HHN. ML:0.6 0.0000337 1.44 AML other m 2021-03-26T01:51:50.99
IV.ASSB.HHN. ML:0.9 0.00006275 0.24 AML other m 2021-03-26T01:51:50.46
IV.ASSB.HHE. ML:0.7 0.000047350000000000006 0.52 AML other m 2021-03-26T01:51:50.32
IV.FOSV.EHN. ML:0.7 0.000044 0.74 AML other m 2021-03-26T01:51:50.52
IV.CESI.HHE. ML:0.6 0.0000334 1.14 AML other m 2021-03-26T01:51:51.35
IV.ATCC.EHN. ML:0.6 0.00003705 0.92 AML other m 2021-03-26T01:51:52.84
IV.MURB.HHE. ML:1.2 0.0000908 0.82 AML other m 2021-03-26T01:51:53.69
IV.MURB.HHN. ML:1.1 0.0000641 0.84 AML other m 2021-03-26T01:51:53.26
IV.NRCA.HHN. ML:1.0 0.0000367 0.14 AML other m 2021-03-26T01:51:57.18
IV.NRCA.HHE. ML:1.1 0.0000461 0.14 AML other m 2021-03-26T01:51:57.63
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