Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 01-04-2021 and time 08:06:11 (UTC) in region 4 km W Valfabbrica (PG)

A magnitude ML 2.0 earthquake occured in region: 4 km W Valfabbrica (PG), on

  • 01-04-2021 08:06:11 (UTC)
  • 01-04-2021 10:06:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1420, 12.5570 at 8 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valfabbrica PG 4 3389 3389
Bastia Umbra PG 8 21874 25263
Assisi PG 9 28299 53562
Perugia PG 14 166134 219696
Bettona PG 15 4367 224063
Torgiano PG 16 6725 230788
Cannara PG 16 4305 235093
Valtopina PG 19 1398 236491
Spello PG 19 8645 245136
Nocera Umbra PG 19 5839 250975

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Perugia (166134 inhabitants)
24 Km NW of Foligno (57155 inhabitants)
65 Km N of Terni (111501 inhabitants)
65 Km SE of Arezzo (99543 inhabitants)
87 Km SW of Fano (60888 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
90 Km SW of Pesaro (94582 inhabitants)
94 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
Bulletin
Rev1000 		ML 2.0 2021-04-01
08:06:11		 43.1422 12.5572 8 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90132601
Reviewed
Rev100 		ML 2.0 2021-04-01
08:06:11		 43.1428 12.5513 9 2021-04-01
08:15:41		 Sala Sismica INGV-Roma 88670171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-01 08:06:11 ± 0.05
Latitude 43.1422 ± 0.0027
Longitude 12.5572 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90132601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 317
Semi-minor axis of confidence ellipse (meter) 79
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 71
Number of defining phases 71
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.07374
Epicentral distance of station farthest from the epicenter (degree) 0.79500
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 39
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 88670171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-01 08:15:41

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 90132601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-15 17:54:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHZ. 2021-04-01T08:06:31.80 0.3 undecidable manual S 336 61.7937 50 0.94 52
IV.MC2.EHZ. 2021-04-01T08:06:30.40 0.3 undecidable manual S 116 57.2982 50 0.74 57
IV.GAVE.EHZ. 2021-04-01T08:06:29.90 0.3 undecidable manual S 151 56.8986 50 0.33 65
IV.CAFI.HHZ. 2021-04-01T08:06:28.40 0.3 undecidable manual S 294 52.1034 50 0.13 68
IV.EL6.EHZ. 2021-04-01T08:06:28.30 0.1 undecidable manual S 65 48.618 50 0.94 71
IV.CSP1.EHZ. 2021-04-01T08:06:28.80 0.3 undecidable manual S 96 52.7028 50 0.34 65
IV.ARVD.HHZ. 2021-04-01T08:06:27.70 0.3 undecidable manual S 38 50.2164 50 -0.08 69
IV.APEC.HHZ. 2021-04-01T08:06:27.30 0.6 undecidable manual S 347 47.5191 50 0.25 45
IV.MGAB.HHZ. 2021-04-01T08:06:26.70 0.3 undecidable manual S 235 44.1225 50 0.54 63
IV.PIEI.HHZ. 2021-04-01T08:06:26.00 0.1 undecidable manual S 358 43.7229 50 -0.04 94
IV.ATMC.EHZ. 2021-04-01T08:06:26.30 0.3 undecidable manual S 319 44.8218 50 -0.04 71
IV.FDMO.HHZ. 2021-04-01T08:06:26.10 0.1 undecidable manual S 105 44.5221 50 -0.16 92
IV.RM33.EHZ. 2021-04-01T08:06:26.95 0.6 undecidable manual P 142 88.245 50 0.29 41
IV.FRON.EHZ. 2021-04-01T08:06:25.70 0.3 undecidable manual S 18 43.8228 50 -0.38 66
IV.ATPC.HNZ. 2021-04-01T08:06:25.00 0.1 undecidable manual S 348 38.4282 50 0.37 89
IV.MF5.EHZ. 2021-04-01T08:06:25.14 0.3 undecidable manual P 103 75.1692 50 0.51 60
IV.MOMA.HHZ. 2021-04-01T08:06:24.00 0.3 undecidable manual S 178 37.5291 50 -0.4 66
IV.SSFR.HHZ. 2021-04-01T08:06:23.90 0.6 undecidable manual S 29 37.3293 50 -0.45 44
IV.MMO1.EHZ. 2021-04-01T08:06:23.49 0.3 undecidable manual P 113 67.9764 50 -0.04 68
IV.ATPI.EHZ. 2021-04-01T08:06:23.60 0.6 undecidable manual S 340 36.4413 50 -0.5 43
IV.MML1.EHE. 2021-04-01T08:06:23.00 0.3 undecidable manual S 95 33.744 103 -0.28 69
IV.ATBU.EHN. 2021-04-01T08:06:23.80 0.6 undecidable manual S 359 37.0296 50 -0.46 44
IV.SACS.HHZ. 2021-04-01T08:06:23.07 0.3 undecidable manual P 238 61.7937 50 0.49 62
IV.CESI.HHZ. 2021-04-01T08:06:22.00 0.3 undecidable manual S 118 32.0457 104 -0.7 61
IV.ATMI.HHZ. 2021-04-01T08:06:22.30 0.6 undecidable manual S 312 31.6461 104 -0.27 46
IV.PARC.HHZ. 2021-04-01T08:06:22.76 0.3 undecidable manual P 336 61.7937 50 0.19 66
IV.ATSC.EHE. 2021-04-01T08:06:22.70 0.3 undecidable manual S 18 32.9448 104 -0.33 68
IV.TB03.DHZ.01 2021-04-01T08:06:22.50 0.1 undecidable manual S 338 31.1466 105 0.1 95
IV.MPAG.EHZ. 2021-04-01T08:06:21.70 0.3 undecidable manual P 17 56.3991 50 -0.05 69
IV.CSP1.EHZ. 2021-04-01T08:06:21.07 0.1 undecidable manual P 96 52.7028 50 -0.11 91
IV.TB02.DHZ.01 2021-04-01T08:06:21.20 0.1 undecidable manual S 335 27.9498 106 -0.16 95
IV.GAVE.EHZ. 2021-04-01T08:06:21.63 0.1 undecidable manual P 151 56.8986 50 -0.2 89
IV.MC2.EHZ. 2021-04-01T08:06:21.87 0.3 undecidable manual P 116 57.2982 50 -0.01 69
IV.CAFI.HHZ. 2021-04-01T08:06:21.09 0.3 undecidable manual P 294 52.1034 50 0.01 70
IV.MMUR.HNZ. 2021-04-01T08:06:20.59 0.3 undecidable manual P 47 48.7179 50 0.03 70
IV.FOSV.EHZ. 2021-04-01T08:06:20.10 0.1 undecidable manual S 44 23.6541 109 0.18 95
IV.ATVA.EHE. 2021-04-01T08:06:20.40 0.3 undecidable manual S 305 26.6511 107 -0.52 66
IV.ARVD.HHZ. 2021-04-01T08:06:20.53 0.3 undecidable manual P 38 50.2164 50 -0.26 67
IV.APEC.HHZ. 2021-04-01T08:06:20.27 0.3 undecidable manual P 347 47.5191 50 -0.1 69
IV.ATFO.HHZ. 2021-04-01T08:06:20.80 0.1 undecidable manual S 3 24.9528 108 0.46 89
IV.EL6.EHZ. 2021-04-01T08:06:20.39 0.1 positive manual P 65 48.618 50 -0.16 91
IV.MGAB.HHZ. 2021-04-01T08:06:19.72 0.3 undecidable manual P 235 44.1225 50 -0.14 69
IV.FRON.EHZ. 2021-04-01T08:06:19.54 0.3 undecidable manual P 18 43.8228 50 -0.27 67
IV.ATLO.EHE. 2021-04-01T08:06:19.70 0.1 undecidable manual S 328 22.6551 110 0.09 97
IV.ATMC.EHZ. 2021-04-01T08:06:19.84 0.3 undecidable manual P 319 44.8218 50 -0.12 69
IV.PIEI.HHZ. 2021-04-01T08:06:19.57 0.1 undecidable manual P 358 43.7229 50 -0.22 91
IV.FDMO.HHZ. 2021-04-01T08:06:19.67 0.3 undecidable manual P 105 44.5221 50 -0.25 68
IT.FOPC.HGE. 2021-04-01T08:06:19.80 0.1 undecidable manual S 148 22.4553 110 0.26 94
IV.ATBU.EHN. 2021-04-01T08:06:18.66 0.1 undecidable manual P 359 37.0296 50 -0.1 94
IV.SSFR.HHZ. 2021-04-01T08:06:18.47 0.3 undecidable manual P 29 37.3293 50 -0.34 67
IV.ATPC.HNZ. 2021-04-01T08:06:18.77 0.1 negative manual P 348 38.4282 50 -0.21 92
IV.ATMI.HHZ. 2021-04-01T08:06:18.35 0.6 undecidable manual P 312 31.6461 104 0.56 43
IT.GNU.HGZ. 2021-04-01T08:06:18.89 0.6 undecidable manual P 178 37.5291 50 0.05 48
IV.ATPI.EHZ. 2021-04-01T08:06:18.32 0.1 undecidable manual P 340 36.4413 50 -0.35 90
IV.MOMA.HHZ. 2021-04-01T08:06:18.58 0.1 undecidable manual P 178 37.5291 50 -0.26 91
IV.CESI.HHZ. 2021-04-01T08:06:17.59 0.3 undecidable manual P 118 32.0457 104 -0.27 69
IV.MURB.HHZ. 2021-04-01T08:06:17.20 0.3 undecidable manual S 349 13.6752 121 0.44 69
IV.MML1.EHE. 2021-04-01T08:06:17.96 0.1 positive manual P 95 33.744 103 -0.23 92
IV.ATSC.EHE. 2021-04-01T08:06:17.96 0.3 undecidable manual P 18 32.9448 104 -0.09 71
IV.TB03.DHZ.01 2021-04-01T08:06:17.50 0.3 undecidable manual P 338 31.1466 105 -0.19 70
IV.FOSV.EHZ. 2021-04-01T08:06:16.27 0.1 undecidable manual P 44 23.6541 109 0.01 98
IV.TB02.DHZ.01 2021-04-01T08:06:16.95 0.3 undecidable manual P 335 27.9498 106 -0.14 71
IV.ATVA.EHE. 2021-04-01T08:06:16.75 0.1 undecidable manual P 305 26.6511 107 -0.09 96
IV.ATLO.EHE. 2021-04-01T08:06:16.03 0.1 negative manual P 328 22.6551 110 -0.05 98
IV.ASSB.HHZ. 2021-04-01T08:06:16.80 0.1 undecidable manual S 143 13.7751 120 0.01 100
IV.ATFO.HHZ. 2021-04-01T08:06:16.59 0.3 undecidable manual P 3 24.9528 108 0.09 72
IT.FOPC.HGE. 2021-04-01T08:06:16.03 0.3 undecidable manual P 148 22.4553 110 -0.01 74
IV.ATCC.EHZ. 2021-04-01T08:06:15.40 0.1 undecidable manual S 55 8.1807 134 0.15 98
IV.MURB.HHZ. 2021-04-01T08:06:14.72 0.1 negative manual P 349 13.6752 121 0.29 94
IV.ASSB.HHZ. 2021-04-01T08:06:14.54 0.1 negative manual P 143 13.7751 120 0.09 98
IV.ATCC.EHZ. 2021-04-01T08:06:13.82 0.1 positive manual P 55 8.1807 134 0.26 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:2.3 0.0030949999999999997 0.16 AML other m 2021-04-01T08:06:15.60
IV.ATCC.EHE. ML:2.3 0.003165 0.38 AML other m 2021-04-01T08:06:16.53
IV.ASSB.HHN. ML:2.2 0.0017850000000000001 0.68 AML other m 2021-04-01T08:06:17.61
IV.ASSB.HHE. ML:2.2 0.00158 0.14 AML other m 2021-04-01T08:06:17.37
IV.MURB.HNE. ML:2.7 0.006215 0.3 AML other m 2021-04-01T08:06:17.59
IV.MURB.HHE. ML:2.8 0.006889999999999999 0.3 AML other m 2021-04-01T08:06:17.59
IV.MURB.HNN. ML:2.6 0.00443 0.2 AML other m 2021-04-01T08:06:18.17
IV.MURB.HHN. ML:2.6 0.00526 0.2 AML other m 2021-04-01T08:06:18.17
IV.FOSV.EHN. ML:1.8 0.000443 0.14 AML other m 2021-04-01T08:06:20.46
IV.ATFO.HHN. ML:2.0 0.0006105 0.22 AML other m 2021-04-01T08:06:21.39
IV.ATFO.HHE. ML:1.8 0.0004295 0.2 AML other m 2021-04-01T08:06:21.50
IV.CESI.HHE. ML:1.9 0.00037 0.3 AML other m 2021-04-01T08:06:22.97
IV.CESI.HHN. ML:1.9 0.00034250000000000003 1.68 AML other m 2021-04-01T08:06:24.96
IV.ATMI.HHE. ML:2.0 0.0004455 0.9 AML other m 2021-04-01T08:06:24.77
IV.SSFR.HNN. ML:2.4 0.000877 0.64 AML other m 2021-04-01T08:06:24.47
IV.SSFR.HHN. ML:2.3 0.0008380000000000001 0.62 AML other m 2021-04-01T08:06:24.48
IV.MOMA.HHN. ML:1.9 0.0003095 0.14 AML other m 2021-04-01T08:06:24.76
IV.FOSV.EHE. ML:1.6 0.000284 0.44 AML other m 2021-04-01T08:06:24.54
IV.MOMA.HNN. ML:1.9 0.00028900000000000003 0.16 AML other m 2021-04-01T08:06:24.76
IV.ATMI.HHN. ML:2.0 0.0005095000000000001 0.78 AML other m 2021-04-01T08:06:25.61
IV.SSFR.HHE. ML:2.4 0.0008895 0.16 AML other m 2021-04-01T08:06:25.66
IV.SSFR.HNE. ML:2.4 0.0008914999999999999 0.16 AML other m 2021-04-01T08:06:25.66
IV.MOMA.HNE. ML:2.0 0.00035299999999999996 1.12 AML other m 2021-04-01T08:06:25.41
IV.ATPI.EHE. ML:1.6 0.0001525 0.66 AML other m 2021-04-01T08:06:25.66
IV.MOMA.HHE. ML:2.0 0.00034899999999999997 0.16 AML other m 2021-04-01T08:06:26.41
IV.PIEI.HHE. ML:2.1 0.00041549999999999996 0.3 AML other m 2021-04-01T08:06:27.02
IV.PIEI.HHN. ML:2.0 0.0003015 0.24 AML other m 2021-04-01T08:06:27.19
IV.ATPI.EHN. ML:1.6 0.00014000000000000001 0.4 AML other m 2021-04-01T08:06:27.71
IV.MGAB.HHE. ML:1.8 0.0001985 0.18 AML other m 2021-04-01T08:06:27.95
IV.ARVD.HHE. ML:1.8 0.0001785 1.02 AML other m 2021-04-01T08:06:28.72
IV.ARVD.HHN. ML:1.8 0.000164 0.12 AML other m 2021-04-01T08:06:28.45
IV.MGAB.HHN. ML:1.9 0.0002605 1.5 AML other m 2021-04-01T08:06:28.80
IV.CSP1.EHN. ML:2.3 0.00054 1.46 AML other m 2021-04-01T08:06:29.88
IV.MPAG.EHE. ML:1.6 0.00008424999999999999 1.66 AML other m 2021-04-01T08:06:30.11
IV.EL6.EHN. ML:1.7 0.00015035 0.82 AML other m 2021-04-01T08:06:30.68
IV.CSP1.EHE. ML:2.1 0.00028100000000000005 1.56 AML other m 2021-04-01T08:06:30.94
IV.GAVE.EHE. ML:2.0 0.000211 0.82 AML other m 2021-04-01T08:06:31.35
IV.EL6.EHE. ML:1.8 0.000155 0.72 AML other m 2021-04-01T08:06:31.86
IV.MPAG.EHN. ML:1.5 0.00006435 0.78 AML other m 2021-04-01T08:06:31.16
IV.GAVE.EHN. ML:1.9 0.000165 1.52 AML other m 2021-04-01T08:06:32.15
IV.SACS.HHN. ML:1.8 0.0001185 0.28 AML other m 2021-04-01T08:06:32.52
IV.SACS.HHE. ML:1.4 0.000055150000000000006 0.26 AML other m 2021-04-01T08:06:32.85
IV.PARC.HHN. ML:1.5 0.00006055 0.24 AML other m 2021-04-01T08:06:34.46
IV.PARC.HHE. ML:1.7 0.00011149999999999999 1.46 AML other m 2021-04-01T08:06:35.01
IV.RM33.EHE. ML:1.7 0.000056550000000000006 0.26 AML other m 2021-04-01T08:06:40.42
IV.RM33.EHN. ML:1.8 0.00006825 0.96 AML other m 2021-04-01T08:06:42.49
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
Waveforms Seismic signals in miniseed + resp format Download