Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 25-03-2021 and time 03:44:59 (Italy) in region 5 km NE Nocera Umbra (PG)

A magnitude ML 0.3 earthquake occured in region: 5 km NE Nocera Umbra (PG), on

  • 25-03-2021 02:44:59 (UTC)
  • 25-03-2021 03:44:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1440, 12.8290 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 5 5839 5839
Fiuminata MC 10 1402 7241
Sefro MC 10 422 7663
Gualdo Tadino PG 10 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
Valfabbrica PG 19 3389 34736
Muccia MC 19 915 35651
Assisi PG 19 28299 63950
Matelica MC 19 9981 73931
Camerino MC 20 6974 80905

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)
100 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 0.3 2021-03-25
02:44:59		 43.1442 12.8287 10 2021-03-25
02:54:48		 Sala Sismica INGV-Roma 88445501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-25 02:44:59 ± 0.06
Latitude 43.1442 ± 0.0027
Longitude 12.8287 ± 0.0037
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 88445501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 161
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
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) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.29408
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:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 88445501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-25 02:54:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-03-25T02:45:10.62 0.6 undecidable manual S 353 32.6451 50 -0.02 49
IV.FOSV.EHZ. 2021-03-25T02:45:05.96 0.6 undecidable manual S 342 17.5713 118 -0.1 49
IV.ATCC.EHZ. 2021-03-25T02:45:05.52 0.6 undecidable manual S 287 15.9729 121 -0.04 50
IV.ASSB.HHZ. 2021-03-25T02:45:05.80 0.6 undecidable manual S 231 17.7711 118 -0.32 47
IV.SNTG.HHN. 2021-03-25T02:45:05.30 0.1 undecidable manual S 36 15.2736 122 -0.06 100
IV.SSFR.HHZ. 2021-03-25T02:45:05.61 0.3 undecidable manual P 353 32.6451 50 -0.16 71
IV.CESI.HHZ. 2021-03-25T02:45:05.81 0.6 undecidable manual S 158 16.6722 120 0.04 50
IV.MML1.HNE. 2021-03-25T02:45:04.27 0.6 undecidable manual S 106 12.0768 128 -0.18 49
IV.FOSV.EHZ. 2021-03-25T02:45:03.38 0.3 undecidable manual P 342 17.5713 118 0.25 72
IV.ASSB.HHZ. 2021-03-25T02:45:03.34 0.1 undecidable manual P 231 17.7711 118 0.18 97
IV.CESI.HHZ. 2021-03-25T02:45:02.98 0.3 undecidable manual P 158 16.6722 120 0.02 75
IV.MML1.HNE. 2021-03-25T02:45:02.22 0.3 undecidable manual P 106 12.0768 128 0.02 76
IV.ATCC.EHZ. 2021-03-25T02:45:02.81 0.3 undecidable manual P 287 15.9729 121 -0.03 75
IV.SNTG.HHN. 2021-03-25T02:45:02.83 0.1 undecidable manual P 36 15.2736 122 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:0.3 0.000019431504 1.2208 AML other m 2021-03-25T02:45:05.99
IV.ATCC.EHN. ML:0.2 0.00001638333 0.3008 AML other m 2021-03-25T02:45:09.11
IV.CESI.HHE. ML:0.0 0.00001170057 0.2592 AML other m 2021-03-25T02:45:06.59
IV.CESI.HHN. ML:0.0 0.00000911465405 0.1808 AML other m 2021-03-25T02:45:06.50
IV.CESI.HNE. ML:1.1 0.00010519867000000001 0.6096 AML other m 2021-03-25T02:45:07.74
IV.CESI.HNN. ML:1.2 0.00012882431999999998 0.7088 AML other m 2021-03-25T02:45:13.90
IV.ASSB.HHE. ML:0.2 0.000016435990000000003 0.16 AML other m 2021-03-25T02:45:07.38
IV.ASSB.HHN. ML:0.4 0.000019621982 0.2 AML other m 2021-03-25T02:45:07.29
IV.FOSV.EHE. ML:0.4 0.00001998451 0.12 AML other m 2021-03-25T02:45:06.77
IV.FOSV.EHN. ML:0.2 0.000017458090000000004 0.2192 AML other m 2021-03-25T02:45:06.98
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