Earthquake with magnitude of ML 2.1 on date 18-07-2020 and time 21:19:11 (Italy) in region 2 km NW Massa Martana (PG)

A magnitude ML 2.1 earthquake occured in region: 2 km NW Massa Martana (PG), on

  • 18-07-2020 19:19:11 (UTC)
  • 18-07-2020 21:19:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 12.5070 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.

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 8 3846 7616
Todi PG 8 16851 24467
Acquasparta TR 11 4778 29245
Collazzone PG 13 3473 32718
Fratta Todina PG 14 1839 34557
Monte Castello di Vibio PG 14 1567 36124
Gualdo Cattaneo PG 14 6155 42279
Castel Ritaldi PG 14 3278 45557
Montecastrilli TR 16 5022 50579
Avigliano Umbro TR 16 2558 53137
Montefalco PG 17 5679 58816
Bevagna PG 18 5081 63897
Marsciano PG 19 18902 82799
San Gemini TR 20 5018 87817
Spoleto PG 20 38218 126035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SW of Foligno (57155 inhabitants)
28 Km NW of Terni (111501 inhabitants)
37 Km S of Perugia (166134 inhabitants)
53 Km NE of Viterbo (67173 inhabitants)
88 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)
97 Km NE of Civitavecchia (52991 inhabitants)
99 Km W of Teramo (54892 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 2.1 2020-07-18
19:19:11
42.7893 12.5067 9 2020-11-19
12:37:02
Bollettino Sismico Italiano INGV 83102831
Reviewed
Rev100
ML 2.1 2020-07-18
19:19:11
42.7938 12.5035 9 2020-07-18
19:28:54
Sala Sismica INGV-Roma 81140851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-18 19:19:11 ± 0.06
Latitude 42.7893 ± 0.0036
Longitude 12.5067 ± 0.0049
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 83102831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 392
Semi-minor axis of confidence ellipse (meter) 353
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 51
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.92270
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 62
Type of magnitude ML
Reference to an origin 81140851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-18 19:28:54

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 62
Type of magnitude ML
Reference to an origin 83102831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-21 13:06:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-07-18T19:19:35.69 0.6 undecidable manual S 39 76.8675 50 0.89 35
IV.ATPI.EHZ. 2020-07-18T19:19:34.24 0.6 undecidable manual S 353 73.8705 50 0.26 44
IV.MMO1.EHZ. 2020-07-18T19:19:32.72 0.6 undecidable manual S 79 67.7766 50 0.35 43
IV.CSP1.EHZ. 2020-07-18T19:19:32.24 0.6 undecidable manual S 59 65.8896 50 0.39 43
IV.ATVO.HHZ. 2020-07-18T19:19:32.17 0.6 undecidable manual S 353 66.2781 50 0.22 45
IV.PE3.EHZ. 2020-07-18T19:19:29.30 0.3 undecidable manual P 360 100.6215 50 0.8 52
IV.PARC.HHZ. 2020-07-18T19:19:28.41 0.3 undecidable manual P 347 97.7244 50 0.35 61
IV.CRE.HHZ. 2020-07-18T19:19:28.78 0.6 undecidable manual P 334 102.4197 50 0.01 43
IV.FDMO.HHZ. 2020-07-18T19:19:28.96 0.6 undecidable manual S 60 54.6009 50 0.13 47
IV.MURB.HHZ. 2020-07-18T19:19:28.37 0.6 undecidable manual S 2 52.6029 50 0.07 47
IV.ATCC.EHZ. 2020-07-18T19:19:27.03 0.6 undecidable manual S 14 45.2214 50 0.69 41
IV.LNSS.HHZ. 2020-07-18T19:19:27.30 0.6 undecidable manual S 115 48.2184 50 0.17 47
IV.SACS.HHZ. 2020-07-18T19:19:27.44 0.6 undecidable manual S 278 49.0176 50 0.08 47
IV.SSP9.EHZ. 2020-07-18T19:19:27.94 0.3 undecidable manual P 341 92.1411 50 0.74 55
IV.NRCA.HHZ. 2020-07-18T19:19:27.71 0.6 undecidable manual S 84 49.7169 50 0.18 46
IV.BADI.EHZ. 2020-07-18T19:19:26.00 0.3 undecidable manual P 345 82.6506 50 0.26 64
TV.SF01.EHZ. 2020-07-18T19:19:25.52 0.3 undecidable manual P 272 76.8675 50 0.69 57
IV.PIEI.HHZ. 2020-07-18T19:19:25.76 0.3 undecidable manual P 2 82.8504 50 0 68
IV.EL6.EHZ. 2020-07-18T19:19:24.61 0.1 undecidable manual P 39 76.8675 50 -0.23 87
IV.ATPI.EHZ. 2020-07-18T19:19:24.23 0.3 undecidable manual P 353 73.8705 50 -0.15 67
IV.CESI.HNE. 2020-07-18T19:19:24.80 0.6 undecidable manual S 53 40.2264 50 -0.2 47
IV.MMO1.EHZ. 2020-07-18T19:19:23.27 0.3 undecidable manual P 79 67.7766 50 -0.17 68
IV.CSP1.EHZ. 2020-07-18T19:19:23.05 0.1 undecidable manual P 59 65.8896 50 -0.1 92
IV.BARO.EHZ. 2020-07-18T19:19:23.85 0.3 undecidable manual P 212 70.6737 50 -0.03 69
IV.SMA1.EHZ. 2020-07-18T19:19:23.89 0.3 undecidable manual P 104 69.7746 50 0.14 68
IV.RM33.EHZ. 2020-07-18T19:19:23.07 0.3 undecidable manual P 118 65.5899 50 -0.03 70
IV.ATFO.HHZ. 2020-07-18T19:19:22.79 0.3 undecidable manual P 5 64.2912 50 -0.1 69
IV.ATMI.HHZ. 2020-07-18T19:19:22.50 0.3 undecidable manual P 342 63.492 50 -0.27 67
IV.ASSB.HHZ. 2020-07-18T19:19:22.07 0.6 undecidable manual S 24 30.6471 106 -0.23 48
IV.ATVO.HHZ. 2020-07-18T19:19:22.84 0.1 undecidable manual P 353 66.2781 50 -0.36 87
IV.SNTG.HNZ. 2020-07-18T19:19:22.23 0.3 undecidable manual P 34 62.493 50 -0.4 65
IV.MC2.EHZ. 2020-07-18T19:19:21.70 0.3 undecidable manual P 76 57.0984 50 -0.09 70
IV.FDMO.HHZ. 2020-07-18T19:19:21.20 0.1 undecidable manual P 60 54.6009 50 -0.2 92
IV.MURB.HHZ. 2020-07-18T19:19:20.74 0.1 undecidable manual P 2 52.6029 50 -0.35 89
IT.FOPC.HGE. 2020-07-18T19:19:20.85 0.6 undecidable manual S 39 25.5522 108 0.24 48
IV.LNSS.HHZ. 2020-07-18T19:19:20.32 0.3 undecidable manual P 115 48.2184 50 -0.1 71
IV.SACS.HHZ. 2020-07-18T19:19:20.46 0.3 undecidable manual P 278 49.0176 50 -0.09 71
IV.NRCA.HHZ. 2020-07-18T19:19:20.44 0.1 undecidable manual P 84 49.7169 50 -0.21 92
IV.CESX.HHZ. 2020-07-18T19:19:19.25 0.6 undecidable manual S 162 21.0678 112 0.1 50
IV.ATCC.EHZ. 2020-07-18T19:19:19.57 0.1 positive manual P 14 45.2214 50 -0.39 90
IV.CESI.HNE. 2020-07-18T19:19:18.95 0.1 undecidable manual P 53 40.2264 50 -0.24 93
IV.ASSB.HHZ. 2020-07-18T19:19:17.27 0.1 positive manual P 24 30.6471 106 -0.36 93
IV.GAVE.EHZ. 2020-07-18T19:19:17.83 0.3 undecidable manual P 109 33.3444 50 -0.31 70
IV.MGAB.HHZ. 2020-07-18T19:19:17.94 0.1 undecidable manual P 293 34.8429 50 -0.43 90
IV.ARRO.EHZ. 2020-07-18T19:19:17.85 0.1 undecidable manual P 138 31.4463 105 0.07 98
IT.FOPC.HGE. 2020-07-18T19:19:16.62 0.1 undecidable manual P 39 25.5522 108 -0.04 100
IV.CESX.HHZ. 2020-07-18T19:19:15.90 0.1 positive manual P 162 21.0678 112 0.09 100
IT.GNU.HGZ. 2020-07-18T19:19:14.77 0.3 undecidable manual S 73 5.3946 148 0.01 78
IV.MOMA.HNZ. 2020-07-18T19:19:14.79 0.3 undecidable manual S 73 5.3946 148 0.03 78
IT.GNU.HGZ. 2020-07-18T19:19:13.48 0.1 undecidable manual P 73 5.3946 148 0.2 100
IV.MOMA.HNZ. 2020-07-18T19:19:13.50 0.1 undecidable manual P 73 5.3946 148 0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:2.7 0.009835 0.26 AML other m 2020-07-18T19:19:14.97
IV.MOMA.HNE. ML:2.7 0.009325 1.66 AML other m 2020-07-18T19:19:15.02
IV.MOMA.HHN. ML:2.6 0.008035 1.66 AML other m 2020-07-18T19:19:15.88
IV.MOMA.HNN. ML:2.6 0.007235 1.64 AML other m 2020-07-18T19:19:15.88
IV.CESX.HHN. ML:2.2 0.0012599999999999998 0.72 AML other m 2020-07-18T19:19:20.77
IV.CESX.HHE. ML:2.3 0.00131 0.44 AML other m 2020-07-18T19:19:20.74
IV.ASSB.HHE. ML:2.0 0.000447 1.54 AML other m 2020-07-18T19:19:23.90
IV.MGAB.HHN. ML:2.3 0.000786 0.78 AML other m 2020-07-18T19:19:24.39
IV.MGAB.HNN. ML:2.2 0.0006995 0.76 AML other m 2020-07-18T19:19:24.01
IV.ASSB.HHN. ML:2.0 0.000434 0.24 AML other m 2020-07-18T19:19:24.45
IV.ARRO.EHN. ML:1.9 0.00039650000000000004 0.96 AML other m 2020-07-18T19:19:25.43
IV.MGAB.HNE. ML:2.1 0.0005899999999999999 1.3 AML other m 2020-07-18T19:19:25.01
IV.ARRO.EHE. ML:1.9 0.00035450000000000005 0.22 AML other m 2020-07-18T19:19:25.65
IV.GAVE.EHE. ML:1.9 0.0003555 0.92 AML other m 2020-07-18T19:19:26.03
IV.MGAB.HHE. ML:2.2 0.0006105 0.54 AML other m 2020-07-18T19:19:26.28
IV.GAVE.EHN. ML:1.9 0.000352 1.58 AML other m 2020-07-18T19:19:26.86
IV.ATCC.EHE. ML:2.1 0.00039449999999999994 0.4 AML other m 2020-07-18T19:19:27.66
IV.NRCA.HHN. ML:1.9 0.000199 0.64 AML other m 2020-07-18T19:19:28.54
IV.ATCC.EHN. ML:2.2 0.000483 0.34 AML other m 2020-07-18T19:19:29.12
IV.MURB.HHE. ML:2.7 0.0012250000000000002 0.22 AML other m 2020-07-18T19:19:29.69
IV.SACS.HHN. ML:1.7 0.00014649999999999998 0.96 AML other m 2020-07-18T19:19:29.36
IV.NRCA.HHE. ML:1.9 0.000209 0.6 AML other m 2020-07-18T19:19:30.35
IV.SACS.HHE. ML:1.9 0.00021250000000000002 0.52 AML other m 2020-07-18T19:19:30.80
IV.FDMO.HHE. ML:1.9 0.0001725 0.76 AML other m 2020-07-18T19:19:31.54
IV.MURB.HHN. ML:2.7 0.00124 0.34 AML other m 2020-07-18T19:19:32.62
IV.LNSS.HHN. ML:1.9 0.000237 0.26 AML other m 2020-07-18T19:19:33.31
IV.CSP1.EHE. ML:2.2 0.00028250000000000004 0.36 AML other m 2020-07-18T19:19:33.11
IV.LNSS.HHE. ML:1.9 0.00023999999999999998 0.46 AML other m 2020-07-18T19:19:33.30
IV.FDMO.HHN. ML:1.8 0.00016 0.34 AML other m 2020-07-18T19:19:34.68
IV.ATFO.HHN. ML:2.2 0.00026450000000000003 0.6 AML other m 2020-07-18T19:19:34.96
IV.ATVO.HHE. ML:2.1 0.000242 0.34 AML other m 2020-07-18T19:19:34.64
IV.ATVO.HHN. ML:2.1 0.0002125 0.76 AML other m 2020-07-18T19:19:34.50
IV.ATFO.HHE. ML:2.2 0.000268 0.2 AML other m 2020-07-18T19:19:35.68
IV.ATPI.EHE. ML:2.0 0.000143 1.2 AML other m 2020-07-18T19:19:35.23
IV.ATMI.HHE. ML:2.6 0.0008005 0.3 AML other m 2020-07-18T19:19:36.62
IV.ATMI.HHN. ML:2.7 0.0009495 0.3 AML other m 2020-07-18T19:19:37.68
IV.CSP1.EHN. ML:2.3 0.000371 0.42 AML other m 2020-07-18T19:19:37.90
IV.BARO.EHE. ML:2.0 0.000177 0.48 AML other m 2020-07-18T19:19:38.62
IV.BARO.EHN. ML:2.0 0.000152 1.38 AML other m 2020-07-18T19:19:39.98
IV.SMA1.EHN. ML:2.2 0.0002385 0.6 AML other m 2020-07-18T19:19:39.45
IV.BADI.EHN. ML:2.1 0.0001595 0.36 AML other m 2020-07-18T19:19:39.91
IV.PIEI.HHN. ML:1.9 0.00009540000000000001 0.88 AML other m 2020-07-18T19:19:39.83
TV.SF01.EHN. ML:2.1 0.000168 1.72 AML other m 2020-07-18T19:19:39.02
IV.RM33.EHN. ML:1.9 0.000136 1.66 AML other m 2020-07-18T19:19:40.89
IV.PIEI.HHE. ML:2.0 0.0001245 0.62 AML other m 2020-07-18T19:19:40.26
IV.SMA1.EHE. ML:2.2 0.000246 0.34 AML other m 2020-07-18T19:19:40.55
IV.ATPI.EHN. ML:1.9 0.000127 1.32 AML other m 2020-07-18T19:19:40.00
IV.RM33.EHE. ML:1.8 0.0001185 1.72 AML other m 2020-07-18T19:19:40.92
IV.BADI.EHE. ML:2.0 0.00013800000000000002 0.36 AML other m 2020-07-18T19:19:41.28
TV.SF01.EHE. ML:1.9 0.0001195 0.52 AML other m 2020-07-18T19:19:41.42
IV.EL6.EHE. ML:2.2 0.000259 0.38 AML other m 2020-07-18T19:19:41.59
IV.EL6.EHN. ML:2.1 0.00019600000000000002 1.48 AML other m 2020-07-18T19:19:42.20
IV.SSP9.EHN. ML:2.0 0.0001067 1.36 AML other m 2020-07-18T19:19:43.28
IV.PARC.HHN. ML:2.1 0.00013350000000000002 1.22 AML other m 2020-07-18T19:19:43.70
IV.PARC.HHE. ML:2.2 0.00014500000000000003 0.9 AML other m 2020-07-18T19:19:43.53
IV.SSP9.EHE. ML:2.0 0.00009810000000000001 0.82 AML other m 2020-07-18T19:19:44.95
IV.TOLF.HHN. ML:1.9 0.00008465 0.5 AML other m 2020-07-18T19:19:45.91
IV.TOLF.HHE. ML:1.9 0.00009405 1.22 AML other m 2020-07-18T19:19:46.00
IV.CRE.HHE. ML:1.8 0.0000644 0.3 AML other m 2020-07-18T19:19:46.30
IV.PE3.EHE. ML:2.4 0.000253 0.66 AML other m 2020-07-18T19:19:46.38
IV.CRE.HHN. ML:2.1 0.000108 1.14 AML other m 2020-07-18T19:19:46.97
IV.PE3.EHN. ML:2.4 0.0002223 0.56 AML other m 2020-07-18T19:19:51.94
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