Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 10-08-2021 and time 14:06:12 (Italy) in region 4 km SE Montefalco (PG)

A magnitude ML 2.1 earthquake occured in region: 4 km SE Montefalco (PG), on

  • 10-08-2021 12:06:12 (UTC)
  • 10-08-2021 14:06:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8670, 12.6770 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
Montefalco PG 4 5679 5679
Castel Ritaldi PG 5 3278 8957
Trevi PG 6 8469 17426
Giano dell'Umbria PG 9 3846 21272
Bevagna PG 9 5081 26353
Campello sul Clitunno PG 10 2442 28795
Foligno PG 10 57155 85950
Gualdo Cattaneo PG 11 6155 92105
Spello PG 14 8645 100750
Spoleto PG 16 38218 138968
Massa Martana PG 16 3770 142738
Cannara PG 16 4305 147043
Vallo di Nera PG 19 364 147407
Collazzone PG 20 3473 150880
Sant'Anatolia di Narco PG 20 564 151444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Foligno (57155 inhabitants)
34 Km N of Terni (111501 inhabitants)
36 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
87 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
96 Km N of Guidonia Montecelio (88673 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 2.1 2021-08-10
12:06:12		 42.8668 12.6772 9 2021-12-29
11:12:35		 Bollettino Sismico Italiano INGV 96363521
Reviewed
Rev100 		ML 2.2 2021-08-10
12:06:12		 42.8667 12.6733 9 2021-08-10
12:12:58		 Sala Sismica INGV-Roma 93921201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-10 12:06:12 ± 0.04
Latitude 42.8668 ± 0.0018
Longitude 12.6772 ± 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 96363521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 208
Semi-minor axis of confidence ellipse (meter) 202
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) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 37
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.84446
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 43
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 84
Type of magnitude ML
Reference to an origin 96363521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-09 03:55:13

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 88
Type of magnitude ML
Reference to an origin 93921201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-10 12:12:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2021-08-10T12:06:28.03 0.6 undecidable manual S 344 45.621 50 0.63 41
IV.PARC.HHZ. 2021-08-10T12:06:27.97 0.6 undecidable manual P 338 93.7395 50 -0.44 40
IV.LNSS.HHZ. 2021-08-10T12:06:26.57 0.6 undecidable manual S 135 41.625 50 0.25 46
IV.APEC.HHZ. 2021-08-10T12:06:26.30 0.6 undecidable manual P 345 79.4649 50 0.08 44
IV.CING.HHZ. 2021-08-10T12:06:25.26 0.3 undecidable manual P 36 70.374 50 0.45 62
IV.CAFI.HHZ. 2021-08-10T12:06:25.90 0.3 undecidable manual P 312 77.1672 50 0.04 67
IV.FDMO.HHZ. 2021-08-10T12:06:25.18 0.6 undecidable manual S 60 38.2284 50 -0.24 46
IV.PIEI.HHZ. 2021-08-10T12:06:25.53 0.6 undecidable manual P 351 75.0693 50 -0.01 45
IV.MF5.EHZ. 2021-08-10T12:06:24.26 0.6 undecidable manual P 78 64.9905 50 0.28 43
IV.ARRO.EHZ. 2021-08-10T12:06:24.03 0.3 undecidable manual S 167 32.745 50 0.09 72
IV.SSFR.HHZ. 2021-08-10T12:06:24.07 0.3 undecidable manual P 8 63.7917 50 0.28 65
IV.MML1.EHZ. 2021-08-10T12:06:24.75 0.6 undecidable manual S 41 36.3414 50 -0.16 47
IV.ATCC.EHZ. 2021-08-10T12:06:24.59 0.6 undecidable manual S 355 35.4423 50 -0.08 48
IV.SRES.HHZ. 2021-08-10T12:06:24.99 0.6 undecidable manual P 191 71.1732 50 0.05 45
IV.ATMI.HHZ. 2021-08-10T12:06:24.03 0.6 undecidable manual P 328 61.494 50 0.58 40
IV.SACS.HHE. 2021-08-10T12:06:24.15 0.1 undecidable manual P 268 62.493 50 0.55 81
IV.GUMA.HHZ. 2021-08-10T12:06:23.11 0.6 undecidable manual P 68 57.6978 50 0.25 44
IV.SMA1.EHZ. 2021-08-10T12:06:23.49 0.6 undecidable manual P 116 59.6958 50 0.32 43
IV.ATVO.HHZ. 2021-08-10T12:06:23.27 0.6 undecidable manual P 339 61.1943 50 -0.14 45
IT.MTCL.HGZ. 2021-08-10T12:06:23.20 0.6 undecidable manual S 62 29.748 107 0.15 48
IV.TB02.DHZ. 2021-08-10T12:06:23.53 1.0 undecidable manual P 339 59.8956 50 0.32 22
IV.EL6.EHZ. 2021-08-10T12:06:23.54 0.6 undecidable manual P 34 61.7937 50 0.05 46
IV.RM33.EHZ. 2021-08-10T12:06:23.12 0.6 undecidable manual P 132 59.0964 50 0.04 46
IV.TB01.DHZ. 2021-08-10T12:06:23.28 0.1 undecidable manual P 341 60.3951 50 0.01 93
IV.MTRA.EHZ. 2021-08-10T12:06:23.34 0.3 undecidable manual P 102 59.7957 50 0.15 67
IV.ATLO.EHE. 2021-08-10T12:06:22.03 0.1 undecidable manual P 336 54.3012 50 -0.31 88
IV.GAVE.EHZ. 2021-08-10T12:06:22.09 0.6 undecidable manual S 138 26.2515 109 0.2 47
IV.ATFO.HHZ. 2021-08-10T12:06:22.59 0.6 undecidable manual P 351 56.0994 50 -0.03 46
IV.CESX.HHZ. 2021-08-10T12:06:22.75 0.6 undecidable manual S 194 29.5482 107 -0.25 47
IV.ATVA.EHE. 2021-08-10T12:06:22.32 0.1 undecidable manual P 325 55.5999 50 -0.23 89
IV.CESI.HHZ. 2021-08-10T12:06:21.15 0.6 undecidable manual S 50 23.9538 110 -0.01 49
IV.FOSV.EHZ. 2021-08-10T12:06:21.18 0.6 undecidable manual P 8 48.0186 50 -0.19 46
IV.MGAB.HHZ. 2021-08-10T12:06:21.26 0.6 undecidable manual P 277 46.2204 50 0.17 46
IV.CSP1.EHZ. 2021-08-10T12:06:21.56 0.6 undecidable manual P 60 49.617 50 -0.05 47
IV.MURB.HHZ. 2021-08-10T12:06:20.92 0.1 positive manual P 344 45.621 50 -0.09 94
IV.LNSS.HHZ. 2021-08-10T12:06:20.23 0.3 undecidable manual P 135 41.625 50 -0.16 70
IV.FIU1.HNZ. 2021-08-10T12:06:20.43 1.0 undecidable manual P 30 41.2254 50 0.1 24
IV.MC2.EHZ. 2021-08-10T12:06:20.44 0.1 undecidable manual P 83 41.9247 50 0.01 96
IV.ATCC.EHZ. 2021-08-10T12:06:19.14 0.1 positive manual P 355 35.4423 50 -0.29 91
IV.SEF1.HNN. 2021-08-10T12:06:19.51 0.1 undecidable manual P 35 38.0286 50 -0.32 90
IV.FDMO.HHZ. 2021-08-10T12:06:19.70 0.1 undecidable manual P 60 38.2284 50 -0.17 93
IV.NRCA.HHZ. 2021-08-10T12:06:19.24 0.1 undecidable manual P 96 35.742 50 -0.24 92
IV.ASSB.HHZ. 2021-08-10T12:06:19.70 0.6 undecidable manual S 356 19.5693 115 -0.04 49
IV.MML1.EHZ. 2021-08-10T12:06:19.42 0.6 undecidable manual P 41 36.3414 50 -0.15 47
IV.FEMA.HNZ. 2021-08-10T12:06:18.82 0.3 undecidable manual P 71 32.0457 50 -0.09 72
IT.MTCL.HGZ. 2021-08-10T12:06:18.51 0.1 undecidable manual P 62 29.748 107 0.02 98
IV.ARRO.EHZ. 2021-08-10T12:06:18.97 0.6 undecidable manual P 167 32.745 50 -0.04 48
IV.CESX.HHZ. 2021-08-10T12:06:18.14 0.1 positive manual P 194 29.5482 107 -0.33 92
IT.GNU.HGE. 2021-08-10T12:06:17.27 0.6 undecidable manual S 231 11.1777 129 0.03 50
IV.MOMA.HHZ. 2021-08-10T12:06:17.09 0.6 undecidable manual S 231 11.1777 129 -0.15 49
IV.CESI.HHZ. 2021-08-10T12:06:17.55 0.1 undecidable manual P 50 23.9538 110 0.14 96
IT.FOPC.HGZ. 2021-08-10T12:06:17.52 0.6 undecidable manual S 10 11.5773 128 0.16 49
IV.GAVE.EHZ. 2021-08-10T12:06:17.83 0.1 undecidable manual P 138 26.2515 109 0 99
IV.ASSB.HHZ. 2021-08-10T12:06:16.50 0.1 positive manual P 356 19.5693 115 -0.09 98
IT.GNU.HGE. 2021-08-10T12:06:15.19 0.3 undecidable manual P 231 11.1777 129 0.05 75
IV.MOMA.HHZ. 2021-08-10T12:06:15.20 0.1 positive manual P 231 11.1777 129 0.06 100
IT.FOPC.HGZ. 2021-08-10T12:06:15.35 0.3 undecidable manual P 10 11.5773 128 0.14 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:2.6 0.00449667 0.3136 AML other m 2021-08-10T12:06:17.41
IV.MOMA.HNE. ML:2.6 0.0050750000000000005 0.22 AML other m 2021-08-10T12:06:17.78
IV.MOMA.HHE. ML:2.6 0.005435 0.22 AML other m 2021-08-10T12:06:17.78
IV.MOMA.HHN. ML:2.6 0.004865562499999999 0.1984 AML other m 2021-08-10T12:06:17.96
IV.ASSB.HHE. ML:2.1 0.0009432106 1.8208 AML other m 2021-08-10T12:06:20.01
IV.ASSB.HHN. ML:2.0 0.00070805385 0.1792 AML other m 2021-08-10T12:06:20.10
IV.CESI.HNE. ML:2.1 0.0008456528999999999 0.2752 AML other m 2021-08-10T12:06:21.35
IV.CESI.HHE. ML:2.1 0.0008906174500000001 0.2624 AML other m 2021-08-10T12:06:21.36
IV.GAVE.HNE. ML:2.6 0.002125 0.36 AML other m 2021-08-10T12:06:22.57
IV.GAVE.EHE. ML:2.6 0.0020099999999999996 0.36 AML other m 2021-08-10T12:06:22.58
IV.CESI.HHN. ML:2.4 0.00163 1.56 AML other m 2021-08-10T12:06:22.91
IV.CESI.HNN. ML:2.4 0.0014884625 1.5712 AML other m 2021-08-10T12:06:22.91
IV.CESX.HHN. ML:2.2 0.00075554805 1.7184 AML other m 2021-08-10T12:06:24.07
IV.CESX.HHE. ML:2.2 0.0008885000000000001 0.32 AML other m 2021-08-10T12:06:24.31
IV.GAVE.HNN. ML:1.9 0.0005340000000000001 0.48 AML other m 2021-08-10T12:06:24.43
IV.GAVE.EHN. ML:2.5 0.001996839 0.48 AML other m 2021-08-10T12:06:24.44
IV.ARRO.EHE. ML:2.0 0.000413 0.98 AML other m 2021-08-10T12:06:24.30
IV.ATCC.EHE. ML:2.1 0.00057049125 0.2432 AML other m 2021-08-10T12:06:24.91
IV.ARRO.EHN. ML:2.0 0.000474 0.24 AML other m 2021-08-10T12:06:25.21
IV.MML1.HNE. ML:1.9 0.00032520615 0.1536 AML other m 2021-08-10T12:06:25.26
IV.MML1.EHE. ML:1.9 0.0003410686 0.16 AML other m 2021-08-10T12:06:25.34
IV.NRCA.HHN. ML:2.1 0.0004657081 0.1408 AML other m 2021-08-10T12:06:25.61
IV.NRCA.HNN. ML:2.0 0.0004164371 0.1344 AML other m 2021-08-10T12:06:25.61
IV.FDMO.HHE. ML:2.1 0.00047948239999999996 0.4224 AML other m 2021-08-10T12:06:25.66
IV.FDMO.HHN. ML:2.1 0.0004305 0.26 AML other m 2021-08-10T12:06:26.35
IV.ATCC.EHN. ML:2.1 0.00049444125 0.2752 AML other m 2021-08-10T12:06:27.06
IV.NRCA.HNE. ML:2.0 0.00037579035 0.1792 AML other m 2021-08-10T12:06:27.87
IV.MML1.HNN. ML:1.9 0.00028471415 0.3584 AML other m 2021-08-10T12:06:27.82
IV.MML1.EHN. ML:1.9 0.00027972010000000005 0.3584 AML other m 2021-08-10T12:06:27.82
IV.NRCA.HHE. ML:2.0 0.0004 0.14 AML other m 2021-08-10T12:06:27.94
IV.MURB.HNE. ML:2.6 0.001316527 0.352 AML other m 2021-08-10T12:06:28.32
IV.MURB.HNN. ML:2.6 0.0012490874999999998 0.2496 AML other m 2021-08-10T12:06:28.57
IV.MURB.HHE. ML:2.7 0.0014632464999999998 0.2624 AML other m 2021-08-10T12:06:28.32
IV.FOSV.EHE. ML:1.9 0.0002145 1.4 AML other m 2021-08-10T12:06:28.02
IV.MURB.HHN. ML:2.7 0.0014513005 0.32 AML other m 2021-08-10T12:06:29.46
IV.MGAB.HHE. ML:2.2 0.0004285 0.36 AML other m 2021-08-10T12:06:30.24
IV.MGAB.HNE. ML:2.2 0.00040800000000000005 0.38 AML other m 2021-08-10T12:06:30.07
IV.CSP1.EHE. ML:2.6 0.0010061338 0.4416 AML other m 2021-08-10T12:06:31.18
IV.CSP1.EHN. ML:2.6 0.001047 0.4 AML other m 2021-08-10T12:06:31.20
IV.ATFO.HHN. ML:2.1 0.000279 0.3 AML other m 2021-08-10T12:06:31.60
IV.FOSV.EHN. ML:1.9 0.00020746975000000001 0.2816 AML other m 2021-08-10T12:06:31.47
IV.ATFO.HHE. ML:1.8 0.00015311370000000002 0.2816 AML other m 2021-08-10T12:06:31.65
IV.RM33.HNE. ML:2.2 0.0003001319 1.6288 AML other m 2021-08-10T12:06:32.94
IV.RM33.EHE. ML:2.1 0.000258 1.64 AML other m 2021-08-10T12:06:32.95
IV.MGAB.HNN. ML:2.1 0.00034271664999999997 0.3904 AML other m 2021-08-10T12:06:33.17
IV.MGAB.HHN. ML:2.1 0.0004016491 0.3968 AML other m 2021-08-10T12:06:33.17
IV.EL6.EHE. ML:2.4 0.0004568097 0.1792 AML other m 2021-08-10T12:06:33.65
IV.MTRA.HNE. ML:2.1 0.00024336555000000002 0.2496 AML other m 2021-08-10T12:06:33.75
IV.MTRA.EHE. ML:2.1 0.000243 0.24 AML other m 2021-08-10T12:06:33.88
IV.MTRA.HNN. ML:2.1 0.00028085935 0.2304 AML other m 2021-08-10T12:06:33.86
IV.MTRA.EHN. ML:2.1 0.000259 0.24 AML other m 2021-08-10T12:06:33.75
IV.ATMI.HHE. ML:2.4 0.000491 0.24 AML other m 2021-08-10T12:06:34.19
IV.RM33.HNN. ML:2.1 0.0002914577 0.4352 AML other m 2021-08-10T12:06:34.05
IV.RM33.EHN. ML:2.0 0.000225 0.44 AML other m 2021-08-10T12:06:34.27
IV.EL6.EHN. ML:2.4 0.0004738476 0.224 AML other m 2021-08-10T12:06:34.42
IV.SSFR.HNN. ML:2.3 0.00039178685 0.1792 AML other m 2021-08-10T12:06:34.52
IV.SSFR.HHN. ML:2.3 0.00036449999999999997 0.2 AML other m 2021-08-10T12:06:34.42
IV.ATVO.HHN. ML:0.0 0.00011760955500000001 0.2752 AML other m 2021-08-10T12:06:34.61
IV.MF5.EHN. ML:2.0 0.00020206625 0.2432 AML other m 2021-08-10T12:06:35.15
IV.GUMA.HHE. ML:2.6 0.0009094999999999999 0.64 AML other m 2021-08-10T12:06:35.29
IV.SSFR.HHE. ML:2.3 0.0003735 0.26 AML other m 2021-08-10T12:06:36.23
IV.ATVO.HHE. ML:0.0 0.000155 0.4 AML other m 2021-08-10T12:06:36.17
IV.SRES.HHN. ML:1.9 0.0001215 0.5 AML other m 2021-08-10T12:06:36.73
IV.CING.HNE. ML:3.4 0.0044381765 0.6336 AML other m 2021-08-10T12:06:37.11
IV.SSFR.HNE. ML:2.3 0.00039916325 0.2432 AML other m 2021-08-10T12:06:37.14
IV.CING.HHN. ML:2.0 0.00015506805 0.1792 AML other m 2021-08-10T12:06:37.24
IV.ATMI.HHN. ML:2.5 0.0005989999999999999 0.46 AML other m 2021-08-10T12:06:37.29
IV.SMA1.EHN. ML:2.1 0.0002714852 0.3008 AML other m 2021-08-10T12:06:38.43
IV.GUMA.HHN. ML:2.5 0.0006577969 0.544 AML other m 2021-08-10T12:06:38.31
IV.GUMA.HNE. ML:2.5 0.00068516305 0.512 AML other m 2021-08-10T12:06:38.57
IV.SMA1.EHE. ML:2.2 0.00032744405 1.7184 AML other m 2021-08-10T12:06:39.90
IV.PIEI.HHE. ML:2.0 0.000167 0.3 AML other m 2021-08-10T12:06:39.46
IV.PIEI.HHN. ML:1.8 0.00008779999999999999 0.34 AML other m 2021-08-10T12:06:39.30
IV.SRES.HHE. ML:1.9 0.0001397611 0.5568 AML other m 2021-08-10T12:06:39.33
IV.CAFI.HNE. ML:1.9 0.000110592535 0.3712 AML other m 2021-08-10T12:06:39.68
IV.CING.HHE. ML:1.9 0.000125 1.48 AML other m 2021-08-10T12:06:39.18
IV.CAFI.HHN. ML:2.0 0.00014500000000000003 0.34 AML other m 2021-08-10T12:06:39.99
IV.CAFI.HNN. ML:2.0 0.000132607155 0.352 AML other m 2021-08-10T12:06:39.99
IV.CAFI.HHE. ML:1.9 0.00011105000000000002 1.7 AML other m 2021-08-10T12:06:40.87
IV.MF5.EHE. ML:2.0 0.00019834279999999998 0.5184 AML other m 2021-08-10T12:06:41.60
IV.APEC.HHE. ML:1.9 0.00011 1.74 AML other m 2021-08-10T12:06:45.06
IV.APEC.HHN. ML:1.9 0.00011300000000000001 0.36 AML other m 2021-08-10T12:06:45.66
IV.PARC.HHE. ML:1.9 0.00008910000000000001 0.32 AML other m 2021-08-10T12:06:46.05
IV.PARC.HHN. ML:1.9 0.00008115 0.56 AML other m 2021-08-10T12:06:47.55
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