Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 20-07-2020 and time 17:19:09 (UTC) in region 2 km N Massa Martana (PG)

A magnitude ML 2.2 earthquake occured in region: 2 km N Massa Martana (PG), on

  • 20-07-2020 17:19:09 (UTC)
  • 20-07-2020 19:19:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7930, 12.5190 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.

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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
Massa Martana PG 2 3770 3770
Giano dell'Umbria PG 7 3846 7616
Todi PG 9 16851 24467
Acquasparta TR 12 4778 29245
Castel Ritaldi PG 13 3278 32523
Collazzone PG 13 3473 35996
Gualdo Cattaneo PG 13 6155 42151
Fratta Todina PG 14 1839 43990
Monte Castello di Vibio PG 15 1567 45557
Montefalco PG 16 5679 51236
Montecastrilli TR 16 5022 56258
Avigliano Umbro TR 17 2558 58816
Bevagna PG 17 5081 63897
Spoleto PG 19 38218 102115
Marsciano PG 20 18902 121017
San Gemini TR 20 5018 126035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Foligno (57155 inhabitants)
28 Km NW of Terni (111501 inhabitants)
37 Km S of Perugia (166134 inhabitants)
54 Km NE of Viterbo (67173 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
98 Km W of Teramo (54892 inhabitants)
98 Km NE of Civitavecchia (52991 inhabitants)
100 Km N of Roma (2864731 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 2.2 2020-07-20
17:19:09		 42.7933 12.519 8 2020-11-19
12:37:05		 Bollettino Sismico Italiano INGV 84153771
Reviewed
Rev100 		ML 2.1 2020-07-20
17:19:09		 42.7888 12.5142 8 2020-07-20
17:35:50		 Sala Sismica INGV-Roma 81194971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-20 17:19:09 ± 0.06
Latitude 42.7933 ± 0.0027
Longitude 12.5190 ± 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 84153771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 351
Semi-minor axis of confidence ellipse (meter) 123
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 1.08458
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 65
Type of magnitude ML
Reference to an origin 84153771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-26 12:20:26

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 58
Type of magnitude ML
Reference to an origin 81194971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-20 17:35:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-07-20T17:19:36.67 0.6 undecidable manual S 102 90.4428 50 0.09 45
IV.MF5.EHZ. 2020-07-20T17:19:34.49 0.6 undecidable manual S 74 79.4649 50 0.85 36
IV.EL6.EHZ. 2020-07-20T17:19:33.30 0.3 undecidable manual S 38 75.9684 50 0.6 61
IV.MTRA.EHZ. 2020-07-20T17:19:32.00 0.3 undecidable manual S 93 71.5728 50 0.46 64
IV.ATPI.EHZ. 2020-07-20T17:19:32.60 0.3 undecidable manual S 353 73.5708 50 0.54 62
IV.FIAM.HHZ. 2020-07-20T17:19:32.99 0.3 undecidable manual S 140 76.0683 50 0.25 67
TV.SF04.EHZ. 2020-07-20T17:19:31.60 0.6 undecidable manual S 274 69.9744 50 0.47 43
IV.SMA1.EHZ. 2020-07-20T17:19:31.30 0.3 undecidable manual S 105 68.9754 50 0.46 64
IT.MMP1.HGE. 2020-07-20T17:19:30.27 0.6 undecidable manual S 163 63.1923 50 0.96 36
IV.ATMI.HHZ. 2020-07-20T17:19:30.12 0.6 undecidable manual S 341 63.3921 50 0.78 39
IV.ATVO.HHZ. 2020-07-20T17:19:30.43 0.3 undecidable manual S 352 65.9895 50 0.39 66
IV.MMO1.EHZ. 2020-07-20T17:19:30.40 0.3 undecidable manual S 80 66.7776 50 0.15 69
IV.CSP1.EHZ. 2020-07-20T17:19:30.00 0.3 undecidable manual S 59 64.7907 50 0.27 68
IV.RM33.EHZ. 2020-07-20T17:19:29.70 0.3 undecidable manual S 119 64.8906 50 -0.07 71
IV.TB02.DHZ.01 2020-07-20T17:19:29.85 0.3 undecidable manual S 352 64.5909 50 0.17 69
IV.T0110.HHZ. 2020-07-20T17:19:29.54 0.6 undecidable manual P 121 120.3906 50 -0.08 42
IV.ATFO.HHZ. 2020-07-20T17:19:29.93 0.6 undecidable manual S 4 63.6918 50 0.48 43
IV.SRES.HHN. 2020-07-20T17:19:28.83 0.3 undecidable manual S 181 61.6938 50 -0.09 71
IV.ATLO.EHE. 2020-07-20T17:19:28.19 0.3 undecidable manual S 351 58.5969 50 0.12 71
IV.ATVA.EHE. 2020-07-20T17:19:27.03 0.3 undecidable manual S 341 57.0984 50 -0.64 62
IV.MC2.EHZ. 2020-07-20T17:19:27.70 0.3 undecidable manual S 76 55.9995 50 0.31 68
IV.MURB.HHZ. 2020-07-20T17:19:26.20 0.3 undecidable manual S 0 52.1034 50 -0.14 71
IV.PARC.HHZ. 2020-07-20T17:19:26.24 0.3 undecidable manual P 347 97.5246 50 0.14 65
IV.NRCA.HHZ. 2020-07-20T17:19:25.26 0.3 undecidable manual S 85 48.618 50 -0.16 71
IV.PIEI.HHZ. 2020-07-20T17:19:24.00 0.6 undecidable manual P 1 82.3509 50 0.24 44
IV.ATCC.EHZ. 2020-07-20T17:19:24.32 0.3 undecidable manual S 13 44.5221 50 -0.01 74
IV.LNSS.HHZ. 2020-07-20T17:19:24.68 0.3 undecidable manual S 116 47.5191 50 -0.43 68
IV.TERO.HHZ. 2020-07-20T17:19:24.54 0.6 undecidable manual P 102 90.4428 50 -0.47 41
IV.MF5.EHZ. 2020-07-20T17:19:23.65 0.3 undecidable manual P 74 79.4649 50 0.33 65
TV.SF04.EHZ. 2020-07-20T17:19:22.38 0.6 undecidable manual P 274 69.9744 50 0.52 42
IV.CESI.HHZ. 2020-07-20T17:19:22.48 0.3 undecidable manual S 53 39.1275 50 -0.41 69
IV.BARO.HNZ. 2020-07-20T17:19:22.51 0.6 undecidable manual P 212 71.5728 50 0.41 43
IV.FIAM.HHZ. 2020-07-20T17:19:22.50 0.3 undecidable manual P 140 76.0683 50 -0.3 66
IV.EL6.EHZ. 2020-07-20T17:19:22.72 0.3 undecidable manual P 38 75.9684 50 -0.05 69
IV.ATPI.EHZ. 2020-07-20T17:19:22.34 0.3 undecidable manual P 353 73.5708 50 -0.06 69
IV.MMO1.EHZ. 2020-07-20T17:19:21.09 0.1 undecidable manual P 80 66.7776 50 -0.27 90
IV.SMA1.EHZ. 2020-07-20T17:19:21.54 0.1 undecidable manual P 105 68.9754 50 -0.16 92
IT.MMP1.HGE. 2020-07-20T17:19:21.03 0.6 undecidable manual P 163 63.1923 50 0.22 46
IV.ATVO.HHZ. 2020-07-20T17:19:21.08 0.1 undecidable manual P 352 65.9895 50 -0.16 92
IV.MTRA.EHZ. 2020-07-20T17:19:21.89 0.3 undecidable manual P 93 71.5728 50 -0.21 68
IV.TB02.DHZ.01 2020-07-20T17:19:21.06 0.1 positive manual P 352 64.5909 50 0.03 95
IV.MGAB.HNN. 2020-07-20T17:19:21.73 0.3 undecidable manual S 292 35.6421 102 -0.12 74
IV.ATFO.HHZ. 2020-07-20T17:19:20.87 0.3 undecidable manual P 4 63.6918 50 -0.02 71
IV.CSP1.EHZ. 2020-07-20T17:19:20.91 0.1 positive manual P 59 64.7907 50 -0.15 93
IV.GAVE.EHZ. 2020-07-20T17:19:20.64 0.3 undecidable manual S 110 32.5452 103 -0.17 73
IV.ATMI.HHZ. 2020-07-20T17:19:20.58 0.3 undecidable manual P 341 63.3921 50 -0.26 68
IV.SRES.HHN. 2020-07-20T17:19:20.53 1.0 undecidable manual P 181 61.6938 50 -0.05 24
IV.ARRO.EHZ. 2020-07-20T17:19:20.34 0.3 undecidable manual S 140 31.1466 104 0.01 76
IV.RM33.EHZ. 2020-07-20T17:19:20.72 0.1 positive manual P 119 64.8906 50 -0.36 88
IV.LATE.HHN. 2020-07-20T17:19:20.94 1.0 undecidable manual P 251 61.5939 50 0.38 22
IV.MC2.EHZ. 2020-07-20T17:19:19.57 0.1 undecidable manual P 76 55.9995 50 -0.14 94
IV.ASSB.HHZ. 2020-07-20T17:19:19.48 0.3 undecidable manual S 22 29.8479 104 -0.43 70
IV.ATLO.EHE. 2020-07-20T17:19:19.71 0.3 undecidable manual P 351 58.5969 50 -0.39 67
IV.ATVA.EHE. 2020-07-20T17:19:19.39 0.1 undecidable manual P 341 57.0984 50 -0.47 88
IV.LNSS.HHZ. 2020-07-20T17:19:18.02 0.1 undecidable manual P 116 47.5191 50 -0.37 91
IV.NRCA.HHZ. 2020-07-20T17:19:18.24 0.1 positive manual P 85 48.618 50 -0.33 92
IV.MURB.HHZ. 2020-07-20T17:19:18.93 0.1 undecidable manual P 0 52.1034 50 -0.17 94
IT.FOPC.HGE. 2020-07-20T17:19:18.50 0.3 undecidable manual S 37 24.6531 107 0.35 72
IV.CESX.HHZ. 2020-07-20T17:19:17.25 0.3 undecidable manual S 165 21.2676 110 0.21 74
IV.ATCC.EHZ. 2020-07-20T17:19:17.68 0.1 undecidable manual P 13 44.5221 50 -0.26 94
IV.MGAB.HNN. 2020-07-20T17:19:16.33 0.1 undecidable manual P 292 35.6421 102 -0.18 97
IV.CESI.HHZ. 2020-07-20T17:19:16.87 0.1 undecidable manual P 53 39.1275 50 -0.23 95
IV.ARRO.EHZ. 2020-07-20T17:19:15.43 0.3 undecidable manual P 140 31.1466 104 -0.2 73
IV.ASSB.HHZ. 2020-07-20T17:19:15.22 0.1 undecidable manual P 22 29.8479 104 -0.17 98
IV.GAVE.EHZ. 2020-07-20T17:19:15.53 0.1 undecidable manual P 110 32.5452 103 -0.38 94
IT.FOPC.HGE. 2020-07-20T17:19:14.64 0.3 undecidable manual P 37 24.6531 107 0.27 73
IV.CESX.HHZ. 2020-07-20T17:19:13.88 0.1 negative manual P 165 21.2676 110 0.15 100
IT.GNU.HGZ. 2020-07-20T17:19:12.39 0.3 undecidable manual S 74 4.2957 150 0.15 77
IV.MOMA.HNZ. 2020-07-20T17:19:12.40 0.3 undecidable manual S 74 4.2957 150 0.16 77
IT.GNU.HGZ. 2020-07-20T17:19:11.32 0.1 negative manual P 74 4.2957 150 0.36 98
IV.MOMA.HNZ. 2020-07-20T17:19:11.34 0.1 negative manual P 74 4.2957 150 0.38 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T0110.HHE. ML:2.0 0.00007645325499999999 0.8704 AML other m 2020-07-20T17:19:55.23
IV.ATPI.EHE. ML:1.9 0.000114362875 1.6288 AML other m 2020-07-20T17:19:38.00
IV.PIEI.HHN. ML:0.0 0.000081944735 0.3456 AML other m 2020-07-20T17:19:38.70
IV.EL6.EHN. ML:2.3 0.00028584169999999997 0.384 AML other m 2020-07-20T17:19:38.76
IV.PIEI.HHE. ML:0.0 0.00014067479999999998 1.7568 AML other m 2020-07-20T17:19:38.97
IV.ATPI.EHN. ML:1.8 0.0001084194 0.32 AML other m 2020-07-20T17:19:39.78
IV.FIAM.HHE. ML:1.6 0.000058311824999999995 0.4224 AML other m 2020-07-20T17:19:39.94
IV.TERO.HHN. ML:1.9 0.00009819369 0.192 AML other m 2020-07-20T17:19:40.49
IV.TERO.HHE. ML:1.7 0.000061694025 1.7184 AML other m 2020-07-20T17:19:41.92
IV.MF5.EHE. ML:2.2 0.00024239290000000003 1.5008 AML other m 2020-07-20T17:19:41.20
IV.PARC.HHE. ML:0.0 0.00012572855 0.3968 AML other m 2020-07-20T17:19:42.14
IV.PARC.HHN. ML:0.0 0.000098376495 0.3584 AML other m 2020-07-20T17:19:42.57
IV.T0110.HHN. ML:2.0 0.000075723365 0.384 AML other m 2020-07-20T17:19:55.40
IV.MOMA.HNE. ML:0.0 0.013768225 0.1024 AML other m 2020-07-20T17:19:12.94
IV.MOMA.HHE. ML:0.0 0.015435615 0.1024 AML other m 2020-07-20T17:19:12.94
IV.MOMA.HNN. ML:0.0 0.011742428000000001 0.1536 AML other m 2020-07-20T17:19:13.07
IV.MOMA.HHN. ML:0.0 0.0130106015 0.1536 AML other m 2020-07-20T17:19:13.07
IV.CESX.HHN. ML:2.5 0.0021337884999999995 0.32 AML other m 2020-07-20T17:19:17.57
IV.CESX.HHE. ML:2.5 0.0023796859999999998 0.32 AML other m 2020-07-20T17:19:18.36
IV.ASSB.HHN. ML:1.9 0.0004074324 0.1792 AML other m 2020-07-20T17:19:19.96
IV.ASSB.HHE. ML:1.8 0.00032303325 0.1408 AML other m 2020-07-20T17:19:20.65
IV.ARRO.EHN. ML:2.1 0.0006098192 0.1792 AML other m 2020-07-20T17:19:22.55
IV.ARRO.EHE. ML:2.1 0.0006723651500000001 0.2944 AML other m 2020-07-20T17:19:22.59
IV.GAVE.EHE. ML:2.4 0.0011029749 0.1408 AML other m 2020-07-20T17:19:21.69
IV.GAVE.HNE. ML:2.4 0.0011233309500000002 0.1536 AML other m 2020-07-20T17:19:21.69
IV.GAVE.EHN. ML:2.3 0.0009741581500000001 0.2048 AML other m 2020-07-20T17:19:22.65
IV.GAVE.HNN. ML:1.8 0.00028396694999999997 0.1408 AML other m 2020-07-20T17:19:22.12
IV.CESI.HNN. ML:2.2 0.00056195835 0.32 AML other m 2020-07-20T17:19:26.66
IV.CESI.HHN. ML:2.2 0.00055349795 0.32 AML other m 2020-07-20T17:19:26.82
IV.CESI.HHE. ML:2.0 0.0003487292 0.1408 AML other m 2020-07-20T17:19:24.22
IV.CESI.HNE. ML:1.9 0.00030137075 0.3072 AML other m 2020-07-20T17:19:25.76
IV.ATCC.EHE. ML:2.1 0.000371124 0.2432 AML other m 2020-07-20T17:19:27.03
IV.ATCC.EHN. ML:2.1 0.00036561415 0.32 AML other m 2020-07-20T17:19:25.91
IV.LNSS.HNN. ML:2.3 0.00060917595 0.128 AML other m 2020-07-20T17:19:25.98
IV.LNSS.HNE. ML:2.4 0.0007002148000000001 0.1664 AML other m 2020-07-20T17:19:26.02
IV.LNSS.HHE. ML:2.4 0.00073570855 0.1664 AML other m 2020-07-20T17:19:26.11
IV.LNSS.HHN. ML:2.4 0.00066504225 0.1408 AML other m 2020-07-20T17:19:25.98
IV.NRCA.HHN. ML:2.4 0.00074869925 0.1664 AML other m 2020-07-20T17:19:25.82
IV.NRCA.HNE. ML:2.5 0.0008299200500000001 0.128 AML other m 2020-07-20T17:19:25.70
IV.NRCA.HHE. ML:2.5 0.0008768134999999999 0.128 AML other m 2020-07-20T17:19:25.70
IV.NRCA.HNN. ML:2.4 0.0006711780499999999 0.128 AML other m 2020-07-20T17:19:25.67
IV.MURB.HNE. ML:2.7 0.0013620815 0.2688 AML other m 2020-07-20T17:19:30.09
IV.MURB.HHE. ML:2.8 0.0014446300000000001 0.2432 AML other m 2020-07-20T17:19:30.09
IV.MURB.HNN. ML:2.5 0.0008462950000000001 0.2304 AML other m 2020-07-20T17:19:29.15
IV.MURB.HHN. ML:2.6 0.001131634 0.2432 AML other m 2020-07-20T17:19:29.15
IV.ATMI.HHN. ML:2.5 0.0006319491500000001 0.2688 AML other m 2020-07-20T17:19:34.60
IV.ATMI.HHE. ML:2.6 0.00074099505 0.32 AML other m 2020-07-20T17:19:33.36
IV.RM33.EHE. ML:2.0 0.00019856970000000002 0.128 AML other m 2020-07-20T17:19:31.78
IV.RM33.EHN. ML:2.1 0.0002290511 0.2176 AML other m 2020-07-20T17:19:31.74
IV.RM33.HNN. ML:2.1 0.00024624784999999997 0.2304 AML other m 2020-07-20T17:19:31.75
IV.RM33.HNE. ML:2.0 0.00019689063000000002 0.2304 AML other m 2020-07-20T17:19:32.51
IV.ATFO.HHE. ML:2.1 0.00024122165 0.2176 AML other m 2020-07-20T17:19:34.44
IV.ATFO.HHN. ML:2.1 0.0002217594 0.3456 AML other m 2020-07-20T17:19:30.89
IV.CSP1.EHN. ML:2.3 0.00034474495 0.3584 AML other m 2020-07-20T17:19:30.42
IV.CSP1.EHE. ML:2.0 0.000206787 0.2048 AML other m 2020-07-20T17:19:30.46
IV.ATVO.HHN. ML:2.0 0.0001672132 0.3584 AML other m 2020-07-20T17:19:32.65
IV.ATVO.HHE. ML:2.0 0.00020403664999999997 0.2304 AML other m 2020-07-20T17:19:32.69
IV.SMA1.EHN. ML:2.4 0.0004290469 0.4992 AML other m 2020-07-20T17:19:32.84
IV.SMA1.EHE. ML:2.5 0.00051649365 0.3584 AML other m 2020-07-20T17:19:32.76
IV.MTRA.EHN. ML:2.1 0.0002153585 0.2048 AML other m 2020-07-20T17:19:33.09
IV.MTRA.EHE. ML:2.1 0.00020703264999999998 0.2432 AML other m 2020-07-20T17:19:32.90
IV.MTRA.HNN. ML:2.1 0.00021408035 0.2688 AML other m 2020-07-20T17:19:34.60
IV.MTRA.HNE. ML:2.2 0.00023254360000000003 0.256 AML other m 2020-07-20T17:19:32.89
TV.SF04.EHN. ML:1.9 0.00013483280000000001 0.32 AML other m 2020-07-20T17:19:32.78
TV.SF04.EHE. ML:2.0 0.000169951195 0.2688 AML other m 2020-07-20T17:19:34.08
IV.FIAM.HNN. ML:2.1 0.00017455609999999998 0.3712 AML other m 2020-07-20T17:19:35.78
IV.FIAM.HHN. ML:1.7 0.000081182045 0.384 AML other m 2020-07-20T17:19:35.59
IV.EL6.EHE. ML:2.3 0.00027232825 0.2048 AML other m 2020-07-20T17:19:34.15
IV.MF5.EHN. ML:2.1 0.00015887095 0.4352 AML other m 2020-07-20T17:19:35.87
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