Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-04-2021 and time 06:09:15 (Italy) in region 4 km SW Valfabbrica (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km SW Valfabbrica (PG), on

  • 09-04-2021 04:09:15 (UTC)
  • 09-04-2021 06:09:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1350, 12.5640 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
Valfabbrica PG 4 3389 3389
Bastia Umbra PG 8 21874 25263
Assisi PG 8 28299 53562
Perugia PG 15 166134 219696
Bettona PG 15 4367 224063
Cannara PG 16 4305 228368
Torgiano PG 16 6725 235093
Valtopina PG 18 1398 236491
Spello PG 18 8645 245136
Nocera Umbra PG 19 5839 250975

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Perugia (166134 inhabitants)
23 Km NW of Foligno (57155 inhabitants)
64 Km N of Terni (111501 inhabitants)
66 Km SE of Arezzo (99543 inhabitants)
87 Km SW of Fano (60888 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 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 1.5 2021-04-09
04:09:15		 43.1352 12.5642 9 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90724661
Reviewed
Rev100 		ML 1.5 2021-04-09
04:09:15		 43.1308 12.5653 8 2021-04-09
04:33:58		 Sala Sismica INGV-Roma 88928951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-09 04:09:15 ± 0.05
Latitude 43.1352 ± 0.0027
Longitude 12.5642 ± 0.0037
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 90724661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 362
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
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 54
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.78691
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 42
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 90724661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-02 15:15:31

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 88928951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-09 04:33:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHZ. 2021-04-09T04:10:15.07 3.0 undecidable manual Sg 10.74 0
IV.MNTT.EHZ. 2021-04-09T04:09:31.49 0.6 undecidable manual P 95 83.9493 50 1.21 30
IV.RM33.EHZ. 2021-04-09T04:09:30.26 0.6 undecidable manual P 142 87.3459 50 -0.54 41
IV.SACS.HHN. 2021-04-09T04:09:27.41 0.3 undecidable manual P 239 61.8936 50 0.54 64
IV.MML1.HNZ. 2021-04-09T04:09:27.20 0.6 undecidable manual S 94 33.0447 50 -0.23 48
IV.PARC.HHZ. 2021-04-09T04:09:27.43 0.6 undecidable manual P 335 62.6928 50 0.43 44
IV.ATSC.EHE. 2021-04-09T04:09:27.30 0.3 undecidable manual S 17 33.5442 50 -0.25 72
IV.MMO1.EHZ. 2021-04-09T04:09:27.75 0.3 undecidable manual P 113 67.1772 50 0.06 71
IV.CESI.HHZ. 2021-04-09T04:09:26.70 0.3 undecidable manual S 118 31.1466 106 -0.15 74
IV.MPAG.EHZ. 2021-04-09T04:09:26.04 0.3 undecidable manual P 16 56.9985 50 -0.09 72
IV.FIU1.HNZ. 2021-04-09T04:09:26.51 0.3 undecidable manual S 79 30.3474 106 -0.06 75
IV.CING.HNZ. 2021-04-09T04:09:26.24 0.6 undecidable manual P 62 57.5979 50 0.03 48
IV.NRCA.HHZ. 2021-04-09T04:09:25.52 0.3 undecidable manual P 127 55.7997 50 -0.42 67
IV.GAVE.EHZ. 2021-04-09T04:09:25.98 0.6 undecidable manual P 151 55.9995 50 0.01 49
IV.CSP1.EHZ. 2021-04-09T04:09:25.48 0.3 undecidable manual P 95 52.1034 50 0.11 72
IV.ATVA.EHE. 2021-04-09T04:09:25.30 0.3 undecidable manual S 305 27.5502 108 -0.37 71
IV.CAFI.HHZ. 2021-04-09T04:09:25.69 0.6 undecidable manual P 294 52.9026 50 0.2 47
IV.NARO.HHZ. 2021-04-09T04:09:25.20 0.6 undecidable manual P 1 52.8027 50 -0.27 46
IV.ATFO.HHZ. 2021-04-09T04:09:25.10 0.6 undecidable manual S 1 25.6521 109 0.06 51
IV.PIEI.HHZ. 2021-04-09T04:09:24.15 0.6 undecidable manual P 357 44.5221 50 -0.05 49
IV.ARVD.HHZ. 2021-04-09T04:09:24.99 0.3 undecidable manual P 37 50.5161 50 -0.13 72
IV.ATLO.HNE. 2021-04-09T04:09:24.40 0.3 undecidable manual S 328 23.6541 110 0.03 77
IV.FOSV.EHZ. 2021-04-09T04:09:24.80 0.3 undecidable manual S 42 23.8539 110 0.37 72
IV.ATMC.EHN. 2021-04-09T04:09:24.39 0.3 undecidable manual P 319 45.7209 50 0 74
IV.BADI.EHZ. 2021-04-09T04:09:24.94 0.6 undecidable manual P 328 48.9177 50 0.06 49
IV.MGAB.HHZ. 2021-04-09T04:09:24.31 0.3 undecidable manual P 236 44.2224 50 0.16 72
IV.FEMA.HNZ. 2021-04-09T04:09:24.19 0.3 undecidable manual P 116 43.8228 50 0.1 73
IV.EL6.EHZ. 2021-04-09T04:09:24.81 0.3 undecidable manual P 63 48.5181 50 0 74
IT.MTCL.HGZ. 2021-04-09T04:09:23.25 0.3 undecidable manual P 114 38.628 50 -0.04 75
IV.FDMO.HHZ. 2021-04-09T04:09:23.94 0.6 undecidable manual P 104 43.8228 50 -0.15 48
IV.ATBU.HNN. 2021-04-09T04:09:23.27 0.3 undecidable manual P 358 37.8288 50 0.1 74
IV.FRON.EHZ. 2021-04-09T04:09:23.89 0.6 undecidable manual P 17 44.4222 50 -0.29 47
IT.GNU.HGN. 2021-04-09T04:09:23.83 1.0 undecidable manual P 179 36.741 50 0.82 20
IV.SSFR.HHZ. 2021-04-09T04:09:23.24 0.3 undecidable manual P 28 37.7289 50 0.08 74
IV.MOMA.HHZ. 2021-04-09T04:09:23.01 0.3 undecidable manual P 179 36.741 50 0 75
IV.ATPC.HNN. 2021-04-09T04:09:23.50 0.3 undecidable manual P 347 39.3273 50 0.1 74
IV.SEF1.HNN. 2021-04-09T04:09:23.10 1.0 undecidable manual P 87 31.0467 106 1.01 18
IV.ATMI.HHZ. 2021-04-09T04:09:22.39 0.6 undecidable manual P 313 32.5452 50 0.03 50
IV.ATSC.EHE. 2021-04-09T04:09:22.40 0.3 undecidable manual P 17 33.5442 50 -0.11 74
IV.ATPI.EHZ. 2021-04-09T04:09:22.82 0.6 undecidable manual P 340 37.3293 50 -0.28 48
IV.SNTG.HHZ. 2021-04-09T04:09:22.58 0.6 undecidable manual P 66 33.2445 50 0.12 49
IV.FIU1.HNZ. 2021-04-09T04:09:22.02 0.6 undecidable manual P 79 30.3474 106 0.07 50
IV.MML1.HNZ. 2021-04-09T04:09:22.46 0.3 undecidable manual P 94 33.0447 50 0.02 76
IV.CESI.HHZ. 2021-04-09T04:09:21.96 0.3 undecidable manual P 118 31.1466 106 -0.15 74
IV.ATVA.EHE. 2021-04-09T04:09:21.35 0.6 undecidable manual P 305 27.5502 108 -0.07 50
IV.MURB.HHZ. 2021-04-09T04:09:21.90 0.3 undecidable manual S 347 14.5743 121 0.39 72
IV.ATFO.HHZ. 2021-04-09T04:09:21.30 0.6 undecidable manual P 1 25.6521 109 0.24 49
IV.ASSB.HHZ. 2021-04-09T04:09:21.20 0.3 undecidable manual S 143 12.7761 124 0.19 76
IV.FOSV.EHZ. 2021-04-09T04:09:20.79 0.3 undecidable manual P 42 23.8539 110 0.08 76
IV.ATLO.HNE. 2021-04-09T04:09:20.22 0.3 undecidable manual P 328 23.6541 110 -0.46 70
IV.ATCC.EHZ. 2021-04-09T04:09:19.90 0.3 undecidable manual S 48 8.2806 137 0.1 78
IV.MURB.HHZ. 2021-04-09T04:09:18.88 0.3 undecidable manual P 347 14.5743 121 -0.14 76
IV.ASSB.HHZ. 2021-04-09T04:09:18.49 0.1 negative manual P 143 12.7761 124 -0.24 100
IV.ATCC.EHZ. 2021-04-09T04:09:17.76 0.1 undecidable manual P 48 8.2806 137 -0.28 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.0 0.0021231285 0.32 AML other m 2021-04-09T04:09:20.45
IV.ATCC.EHE. ML:0.0 0.0019937505 0.16 AML other m 2021-04-09T04:09:21.15
IV.ASSB.HHE. ML:0.0 0.0007243120000000001 0.16 AML other m 2021-04-09T04:09:21.85
IV.ASSB.HHN. ML:0.0 0.0007164017 0.16 AML other m 2021-04-09T04:09:22.38
IV.MURB.HHE. ML:0.0 0.0033412150000000002 0.2784 AML other m 2021-04-09T04:09:22.40
IV.MURB.HNN. ML:0.0 0.0017908265 0.2112 AML other m 2021-04-09T04:09:22.41
IV.MURB.HNE. ML:0.0 0.0029317485000000003 0.288 AML other m 2021-04-09T04:09:22.41
IV.MMUR.HNN. ML:1.7 0.000136961475 0.2976 AML other m 2021-04-09T04:09:22.79
IV.ATPI.HNN. ML:1.5 0.00011057134999999999 0.832 AML other m 2021-04-09T04:09:22.99
IV.MURB.HHN. ML:0.0 0.0019445019999999999 0.2016 AML other m 2021-04-09T04:09:23.34
IV.FOSV.EHN. ML:0.0 0.000103354505 0.4416 AML other m 2021-04-09T04:09:28.93
IV.FOSV.EHE. ML:0.0 0.00008826576 0.2208 AML other m 2021-04-09T04:09:25.56
IV.ATFO.HHE. ML:0.0 0.0001620271 0.24 AML other m 2021-04-09T04:09:26.18
IV.ATFO.HHN. ML:0.0 0.0002209668 0.2592 AML other m 2021-04-09T04:09:26.07
IV.CESI.HHE. ML:0.0 0.0001516614 0.32 AML other m 2021-04-09T04:09:27.30
IV.CESI.HHN. ML:0.0 0.000101719635 0.1632 AML other m 2021-04-09T04:09:27.90
IV.SNTG.HHN. ML:0.0 0.00011961595 1.7024 AML other m 2021-04-09T04:09:28.98
IV.SNTG.HNN. ML:1.6 0.00017951505500000002 1.5776 AML other m 2021-04-09T04:09:28.14
IV.ATMI.HHE. ML:0.0 0.000108055625 0.3808 AML other m 2021-04-09T04:09:28.33
IV.ATMI.HHN. ML:0.0 0.00015309335000000002 0.24 AML other m 2021-04-09T04:09:28.75
IV.ATPI.EHN. ML:1.4 0.00009709999999999999 1.78 AML other m 2021-04-09T04:09:28.92
IV.MOMA.HHN. ML:1.5 0.00010808825999999999 0.1216 AML other m 2021-04-09T04:09:29.21
IV.SSFR.HHN. ML:1.8 0.00022700000000000002 0.16 AML other m 2021-04-09T04:09:29.34
IV.SSFR.HNN. ML:1.9 0.00029049999999999996 0.98 AML other m 2021-04-09T04:09:29.27
IV.MOMA.HHE. ML:1.4 0.00009235 0.5 AML other m 2021-04-09T04:09:29.80
IV.SSFR.HNE. ML:1.9 0.00027292345 0.1376 AML other m 2021-04-09T04:09:29.90
IV.SSFR.HHE. ML:1.8 0.0002195 0.16 AML other m 2021-04-09T04:09:29.89
IV.ATPI.EHE. ML:1.3 0.00008190820500000001 1.7216 AML other m 2021-04-09T04:09:30.95
IV.MOMA.HNE. ML:1.5 0.00011817306999999999 0.5088 AML other m 2021-04-09T04:09:30.22
IV.FDMO.HHN. ML:1.6 0.0001425 0.2 AML other m 2021-04-09T04:09:30.81
IV.FDMO.HHE. ML:1.4 0.0000824 0.12 AML other m 2021-04-09T04:09:31.29
IV.PIEI.HHE. ML:1.8 0.000201 0.36 AML other m 2021-04-09T04:09:31.89
IV.CESI.HNE. ML:0.0 0.00012124735 0.4192 AML other m 2021-04-09T04:09:31.90
IV.PIEI.HHN. ML:1.6 0.00010825 1.72 AML other m 2021-04-09T04:09:32.88
IV.MGAB.HHN. ML:1.6 0.00011465000000000001 0.68 AML other m 2021-04-09T04:09:32.57
IV.EL6.EHN. ML:1.4 0.0000653 0.98 AML other m 2021-04-09T04:09:32.39
IV.EL6.EHE. ML:1.5 0.00008080000000000001 0.54 AML other m 2021-04-09T04:09:33.02
IV.NARO.HHE. ML:1.2 0.000041150000000000004 1.16 AML other m 2021-04-09T04:09:33.86
IV.MGAB.HHE. ML:1.4 0.0000847 0.52 AML other m 2021-04-09T04:09:33.46
IV.CSP1.EHN. ML:2.0 0.000246 0.32 AML other m 2021-04-09T04:09:33.51
IV.BADI.EHE. ML:1.3 0.00005475 0.82 AML other m 2021-04-09T04:09:33.97
IV.NARO.HHN. ML:1.1 0.0000293 0.36 AML other m 2021-04-09T04:09:33.76
IV.CSP1.EHE. ML:1.9 0.000178 1.3 AML other m 2021-04-09T04:09:33.77
IV.BADI.EHN. ML:1.4 0.00006665000000000001 1.44 AML other m 2021-04-09T04:09:34.97
IV.CAFI.HHE. ML:1.1 0.0000302 0.16 AML other m 2021-04-09T04:09:34.72
IV.GAVE.EHE. ML:1.6 0.00008605 0.38 AML other m 2021-04-09T04:09:35.27
IV.MOMA.HNN. ML:1.6 0.00015348665 1.1296 AML other m 2021-04-09T04:09:35.39
IV.CAFI.HHN. ML:1.0 0.000026 0.2 AML other m 2021-04-09T04:09:36.02
IV.GAVE.EHN. ML:1.6 0.0000852 1.14 AML other m 2021-04-09T04:09:36.28
IV.PARC.HHE. ML:1.3 0.00004165 0.34 AML other m 2021-04-09T04:09:37.74
IV.SNTG.HNE. ML:1.6 0.00015812464500000002 0.768 AML other m 2021-04-09T04:09:38.96
IV.PARC.HHN. ML:1.3 0.00003655 1.4 AML other m 2021-04-09T04:09:39.00
IV.CESI.HNN. ML:0.0 0.000135839675 0.2496 AML other m 2021-04-09T04:09:28.16
IV.ATPI.HNE. ML:1.4 0.00010669713000000001 0.88 AML other m 2021-04-09T04:09:48.56
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