Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-03-2021 and time 19:25:24 (Italy) in region 5 km NE Nocera Umbra (PG)

A magnitude ML 0.9 earthquake occured in region: 5 km NE Nocera Umbra (PG), on

  • 27-03-2021 18:25:24 (UTC)
  • 27-03-2021 19:25:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1480, 12.8160 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Gualdo Tadino PG 10 15208 21047
Fiuminata MC 11 1402 22449
Sefro MC 11 422 22871
Valtopina PG 11 1398 24269
Serravalle di Chienti MC 14 1070 25339
Pioraco MC 14 1134 26473
Esanatoglia MC 16 2034 28507
Fossato di Vico PG 17 2840 31347
Valfabbrica PG 17 3389 34736
Assisi PG 18 28299 63035
Matelica MC 20 9981 73016
Muccia MC 20 915 73931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
67 Km N of Terni (111501 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
79 Km S of Fano (60888 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
85 Km S of Pesaro (94582 inhabitants)
91 Km NW of Teramo (54892 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
Bulletin
Rev1000 		ML 0.9 2021-03-27
18:25:24		 43.148 12.8165 9 2021-07-12
16:55:07		 Bollettino Sismico Italiano INGV 89349371
Reviewed
Rev100 		ML 0.9 2021-03-27
18:25:25		 43.1442 12.8232 8 2021-03-27
18:35:14		 Sala Sismica INGV-Roma 88529401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 18:25:24 ± 0.04
Latitude 43.1480 ± 0.0027
Longitude 12.8165 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89349371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 23
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56927
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 89349371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 06:33:09

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 88529401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 18:35:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GE.MATE.HHZ. 2021-03-27T18:27:07.71 3.0 undecidable manual Sg 16.65 0
IV.VOBA.EHZ. 2021-03-27T18:27:01.93 3.0 undecidable manual Sg 16.01 0
IV.MNTV.EHZ. 2021-03-27T18:26:35.25 3.0 undecidable manual Sn 1.83 0
GU.GSCL.HHZ. 2021-03-27T18:26:34.92 3.0 undecidable manual Sg 12.04 0
IV.GIZZ.HHZ. 2021-03-27T18:26:33.44 3.0 undecidable manual Pg 7.73 0
IV.VARE.HHZ. 2021-03-27T18:26:25.28 3.0 undecidable manual Pn 3.79 0
IV.TREM.HHZ. 2021-03-27T18:26:13.78 3.0 undecidable manual Sg 1.75 0
IV.VOBA.EHZ. 2021-03-27T18:26:12.62 3.0 negative manual Pn 4.9 0
IV.NRCA.HHZ. 2021-03-27T18:25:39.44 0.6 undecidable manual S 145 42.4242 50 0.36 47
IV.MC2.EHZ. 2021-03-27T18:25:38.28 0.6 undecidable manual S 131 40.0266 50 -0.15 50
IV.ARRO.EHZ. 2021-03-27T18:25:36.53 1.0 undecidable manual P 184 63.1923 50 0.23 23
IV.MURB.HHZ. 2021-03-27T18:25:35.01 0.3 undecidable manual S 298 26.8509 109 0.22 75
IV.EL6.EHZ. 2021-03-27T18:25:35.99 0.3 undecidable manual S 49 30.5472 50 0.08 77
IV.FDMO.HHZ. 2021-03-27T18:25:34.36 0.3 undecidable manual S 119 25.1526 110 0.11 77
IV.CESI.HHZ. 2021-03-27T18:25:32.07 0.6 undecidable manual S 156 17.3715 118 0.28 50
IV.ARVD.HHZ. 2021-03-27T18:25:32.32 1.0 undecidable manual P 15 40.1265 50 -0.42 24
IV.NRCA.HHZ. 2021-03-27T18:25:32.94 0.6 undecidable manual P 145 42.4242 50 -0.16 49
IV.MC2.EHZ. 2021-03-27T18:25:32.60 0.6 undecidable manual P 131 40.0266 50 -0.12 50
IV.FOSV.EHZ. 2021-03-27T18:25:31.61 0.3 undecidable manual S 345 16.872 119 -0.02 80
IV.EL6.EHZ. 2021-03-27T18:25:31.19 0.3 undecidable manual P 49 30.5472 50 -0.08 77
IV.ASSB.HHZ. 2021-03-27T18:25:31.66 0.3 undecidable manual S 228 17.3715 119 -0.11 78
IV.CSP1.EHZ. 2021-03-27T18:25:31.60 0.6 undecidable manual P 101 32.0457 50 0.11 51
IV.ATCC.EHZ. 2021-03-27T18:25:31.01 0.3 undecidable manual S 286 14.874 122 -0.02 80
IV.MML1.HNZ. 2021-03-27T18:25:30.61 0.3 undecidable manual S 107 13.1757 126 0.08 79
IV.FDMO.HHZ. 2021-03-27T18:25:30.31 0.6 undecidable manual P 119 25.1526 110 0 53
IV.MURB.HHZ. 2021-03-27T18:25:30.63 0.3 undecidable manual P 298 26.8509 109 0.01 79
IV.ATCC.EHZ. 2021-03-27T18:25:28.48 0.3 undecidable manual P 286 14.874 122 0.03 80
IV.CESI.HHZ. 2021-03-27T18:25:28.57 0.1 undecidable manual P 156 17.3715 118 -0.32 100
IV.FOSV.EHZ. 2021-03-27T18:25:28.77 0.3 undecidable manual P 345 16.872 119 -0.02 80
IV.MML1.HNZ. 2021-03-27T18:25:28.00 0.6 undecidable manual P 107 13.1757 126 -0.16 52
IV.ASSB.HHZ. 2021-03-27T18:25:28.90 0.3 undecidable manual P 228 17.3715 119 0.03 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 0.000066 0.14 AML other m 2021-03-27T18:25:29.86
IV.CESI.HHE. ML:0.8 0.00005765 0.24 AML other m 2021-03-27T18:25:29.93
IV.FOSV.EHE. ML:0.8 0.000047799999999999996 1.04 AML other m 2021-03-27T18:25:31.77
IV.ASSB.HHE. ML:0.8 0.00005375 0.74 AML other m 2021-03-27T18:25:32.41
IV.FOSV.EHN. ML:0.8 0.0000529 0.42 AML other m 2021-03-27T18:25:32.78
IV.ASSB.HHN. ML:0.8 0.00005085 0.2 AML other m 2021-03-27T18:25:32.65
IV.MURB.HHN. ML:1.0 0.000058150000000000004 0.24 AML other m 2021-03-27T18:25:35.48
IV.MURB.HHE. ML:1.1 0.0000698 1.82 AML other m 2021-03-27T18:25:36.95
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