Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2018 and time 18:39:10 (Italy) in region 5 km N Spoleto (PG)

A magnitude ML 2.0 earthquake occured in region: 5 km N Spoleto (PG), on

  • 31-10-2018 17:39:10 (UTC)
  • 31-10-2018 18:39:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7780, 12.7320 at 7 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
Spoleto PG 5 38218 38218
Campello sul Clitunno PG 6 2442 40660
Castel Ritaldi PG 7 3278 43938
Sant'Anatolia di Narco PG 10 564 44502
Vallo di Nera PG 11 364 44866
Scheggino PG 11 461 45327
Trevi PG 11 8469 53796
Giano dell'Umbria PG 14 3846 57642
Montefalco PG 14 5679 63321
Cerreto di Spoleto PG 16 1075 64396
Massa Martana PG 17 3770 68166
Acquasparta TR 18 4778 72944
Ferentillo TR 18 1913 74857
Poggiodomo PG 18 117 74974
Foligno PG 20 57155 132129
Bevagna PG 20 5081 137210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Foligno (57155 inhabitants)
25 Km N of Terni (111501 inhabitants)
46 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
81 Km W of Teramo (54892 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 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 2018-10-31
17:39:10		 42.7783 12.7317 7 2019-06-04
09:16:12		 Bollettino Sismico Italiano INGV 67502781
Reviewed
Rev100 		ML 2.0 2018-10-31
17:39:10		 42.7758 12.706 11 2018-10-31
17:45:51		 Sala Sismica INGV-Roma 62624041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-31 17:39:10 ± 0.05
Latitude 42.7783 ± 0.0018
Longitude 12.7317 ± 0.0025
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67502781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 237
Semi-minor axis of confidence ellipse (meter) 94
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 69
Number of defining phases 69
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.12141
Epicentral distance of station farthest from the epicenter (degree) 0.89483
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 46
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 67502781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-06 09:58:33

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 62624041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-31 17:45:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2018-10-31T17:39:33.39 0.6 undecidable manual S 103 73.1712 50 0.4 42
IV.EL6.EHZ. 2018-10-31T17:39:31.93 0.6 undecidable manual S 26 68.0763 50 0.29 44
IV.FIAM.HHZ. 2018-10-31T17:39:31.10 0.3 undecidable manual S 151 64.7907 50 0.34 65
IV.SACS.HHZ. 2018-10-31T17:39:31.72 0.3 undecidable manual S 277 67.377 50 0.28 66
IV.SRES.HHZ. 2018-10-31T17:39:30.35 0.6 undecidable manual S 197 62.6928 50 0.14 45
IV.CAMP.HHZ. 2018-10-31T17:39:29.99 0.3 undecidable manual S 116 61.494 50 0.12 69
IV.MURB.HHZ. 2018-10-31T17:39:28.79 0.6 undecidable manual S 343 56.2992 50 0.29 45
IV.MTRA.EHZ. 2018-10-31T17:39:28.17 0.6 undecidable manual S 92 54.2013 50 0.24 45
IV.FOSV.HNZ. 2018-10-31T17:39:28.99 0.3 undecidable manual S 2 57.2982 50 0.22 68
IV.SNTG.HHZ. 2018-10-31T17:39:28.46 0.3 undecidable manual S 18 55.5 50 0.18 69
IV.SMA1.EHZ. 2018-10-31T17:39:27.72 0.6 undecidable manual S 108 51.9036 50 0.41 44
IV.MPAG.HNZ. 2018-10-31T17:39:27.21 0.3 undecidable manual P 1 94.4388 50 0.59 57
IV.PF6.EHZ. 2018-10-31T17:39:27.90 0.3 undecidable manual S 43 54.8007 50 -0.19 69
IV.TOLF.HHZ. 2018-10-31T17:39:27.39 0.3 undecidable manual P 217 99.3228 50 0.01 65
IV.MMO1.EHZ. 2018-10-31T17:39:27.05 0.6 undecidable manual S 74 50.2164 50 0.18 46
IV.BADI.EHZ. 2018-10-31T17:39:26.28 0.6 undecidable manual P 334 90.243 50 0.31 42
IV.RM33.EHZ. 2018-10-31T17:39:26.78 0.6 undecidable manual S 127 49.4172 50 0.12 47
IV.FAGN.HHZ. 2018-10-31T17:39:26.34 0.3 undecidable manual P 129 89.9433 50 0.41 61
TV.SF01.EHZ. 2018-10-31T17:39:26.43 0.6 undecidable manual P 273 95.1381 50 -0.31 41
TV.SF13.HHZ. 2018-10-31T17:39:26.40 0.3 undecidable manual P 273 90.6426 50 0.36 62
IV.PIEI.HHZ. 2018-10-31T17:39:25.60 0.3 undecidable manual P 349 85.5477 50 0.35 63
IV.ATMC.EHZ. 2018-10-31T17:39:25.27 1.0 undecidable manual P 330 86.0472 50 -0.06 22
IV.CAFI.HNZ. 2018-10-31T17:39:25.42 0.3 undecidable manual P 315 87.0462 50 -0.07 66
IV.ATPI.EHZ. 2018-10-31T17:39:24.19 0.3 undecidable manual P 340 79.1652 50 -0.09 67
IV.MC2.EHZ. 2018-10-31T17:39:24.44 0.6 undecidable manual S 68 40.0266 50 0.3 46
IV.ATMI.HHZ. 2018-10-31T17:39:24.24 0.6 undecidable manual P 329 72.1722 50 1.04 33
IV.ATPC.HHZ. 2018-10-31T17:39:24.69 0.6 undecidable manual P 344 81.0522 50 0.13 44
IV.ATVO.HHZ. 2018-10-31T17:39:23.46 0.6 undecidable manual P 339 71.9724 50 0.3 43
IV.ATSC.EHZ. 2018-10-31T17:39:23.11 0.6 undecidable manual P 357 71.6727 50 -0.01 46
IV.CING.HHZ. 2018-10-31T17:39:23.36 0.6 undecidable manual P 29 76.1682 50 -0.45 42
IV.GIGS.HHZ. 2018-10-31T17:39:23.52 0.3 undecidable manual P 117 77.5668 50 -0.51 61
IV.SSFR.HNZ. 2018-10-31T17:39:23.00 0.3 undecidable manual P 3 73.0713 50 -0.34 64
IV.TERO.HHZ. 2018-10-31T17:39:23.20 0.3 undecidable manual P 103 73.1712 50 -0.15 67
IV.FDMO.HHZ. 2018-10-31T17:39:23.84 0.6 undecidable manual S 45 40.7259 50 -0.48 44
IV.SACS.HHZ. 2018-10-31T17:39:22.34 0.3 undecidable manual P 277 67.377 50 -0.11 68
IV.ATLO.EHZ. 2018-10-31T17:39:22.66 0.6 undecidable manual P 336 65.0904 50 0.56 41
IV.EL6.EHZ. 2018-10-31T17:39:22.27 0.1 undecidable manual P 26 68.0763 50 -0.29 87
IV.MF5.EHZ. 2018-10-31T17:39:22.09 0.1 undecidable manual P 68 63.5919 50 0.22 89
IV.FEMA.HNE. 2018-10-31T17:39:22.01 0.6 undecidable manual S 52 32.9448 103 0.13 48
IV.ATVA.EHZ. 2018-10-31T17:39:22.09 0.6 undecidable manual P 327 66.2781 50 -0.19 45
IV.CAMP.HHZ. 2018-10-31T17:39:21.35 0.1 undecidable manual P 116 61.494 50 -0.19 90
IV.FIAM.HHZ. 2018-10-31T17:39:21.92 0.3 undecidable manual P 151 64.7907 50 -0.14 68
IV.LNSS.HHZ. 2018-10-31T17:39:21.77 0.6 undecidable manual S 128 31.8459 103 0.27 47
IV.NRCA.HHZ. 2018-10-31T17:39:21.70 0.3 undecidable manual S 79 31.746 103 0.22 71
IV.SRES.HHZ. 2018-10-31T17:39:21.74 0.3 undecidable manual P 197 62.6928 50 0 70
IV.ASSB.HHZ. 2018-10-31T17:39:20.80 0.1 undecidable manual S 349 29.9478 104 -0.06 98
IV.SNTG.HHZ. 2018-10-31T17:39:20.15 0.6 undecidable manual P 18 55.5 50 -0.48 43
IV.SMA1.EHZ. 2018-10-31T17:39:20.03 0.1 undecidable manual P 108 51.9036 50 -0.03 95
IV.MURB.HHZ. 2018-10-31T17:39:20.80 0.6 undecidable manual P 343 56.2992 50 0.05 47
IV.PF6.EHZ. 2018-10-31T17:39:20.25 0.3 undecidable manual P 43 54.8007 50 -0.26 67
IV.MTRA.EHZ. 2018-10-31T17:39:20.23 0.1 undecidable manual P 92 54.2013 50 -0.19 91
IV.FOSV.HNZ. 2018-10-31T17:39:20.58 0.3 undecidable manual P 2 57.2982 50 -0.33 66
IV.CESI.HHZ. 2018-10-31T17:39:20.72 0.3 undecidable manual S 29 28.749 104 0.24 71
IV.ATTE.HHZ. 2018-10-31T17:39:20.30 0.6 undecidable manual P 327 55.6998 50 -0.36 44
IV.MMO1.EHZ. 2018-10-31T17:39:19.62 0.1 undecidable manual P 74 50.2164 50 -0.19 92
IV.MGAB.HHZ. 2018-10-31T17:39:19.73 0.3 undecidable manual P 287 52.503 50 -0.44 65
IV.RM33.EHZ. 2018-10-31T17:39:19.39 0.1 undecidable manual P 127 49.4172 50 -0.3 90
IV.MML1.HNZ. 2018-10-31T17:39:18.11 0.1 positive manual P 28 42.0246 50 -0.43 89
IV.FDMO.HHZ. 2018-10-31T17:39:18.05 0.1 positive manual P 45 40.7259 50 -0.29 92
IV.MC2.EHZ. 2018-10-31T17:39:18.16 0.1 undecidable manual P 68 40.0266 50 -0.08 96
IV.CESX.HHZ. 2018-10-31T17:39:18.13 0.1 undecidable manual S 212 22.2555 108 -0.17 97
IV.FEMA.HNE. 2018-10-31T17:39:17.01 0.1 positive manual P 52 32.9448 103 0.08 97
IV.NRCA.HHZ. 2018-10-31T17:39:16.73 0.1 positive manual P 79 31.746 103 0.03 98
IV.CESI.HHZ. 2018-10-31T17:39:16.15 0.1 positive manual P 29 28.749 104 0.02 99
IV.ASSB.HHZ. 2018-10-31T17:39:16.25 0.1 undecidable manual P 349 29.9478 104 -0.09 98
IV.LNSS.HHZ. 2018-10-31T17:39:16.70 0.1 undecidable manual P 128 31.8459 103 -0.01 99
IV.MOMA.HHZ. 2018-10-31T17:39:15.60 0.3 undecidable manual S 282 13.4754 119 0.11 75
IV.CESX.HHZ. 2018-10-31T17:39:14.90 0.1 positive manual P 212 22.2555 108 0.04 100
IV.MOMA.HHZ. 2018-10-31T17:39:13.45 0.1 positive manual P 282 13.4754 119 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:2.8 0.006765 0.28 AML other m 2018-10-31T17:39:16.15
IV.MOMA.HNE. ML:2.7 0.006465 0.28 AML other m 2018-10-31T17:39:16.16
IV.MOMA.HHN. ML:2.4 0.0032400000000000003 0.18 AML other m 2018-10-31T17:39:16.36
IV.MOMA.HNN. ML:2.4 0.00279 0.2 AML other m 2018-10-31T17:39:16.37
IV.CESX.HHN. ML:2.2 0.0011829999999999998 0.24 AML other m 2018-10-31T17:39:18.58
IV.CESX.HHE. ML:2.1 0.000915 0.48 AML other m 2018-10-31T17:39:20.67
IV.CESI.HHN. ML:2.1 0.000632 1.62 AML other m 2018-10-31T17:39:20.12
IV.ASSB.HHN. ML:2.2 0.000734 0.52 AML other m 2018-10-31T17:39:21.39
IV.ASSB.HHE. ML:2.1 0.0006020000000000001 0.54 AML other m 2018-10-31T17:39:21.11
IV.CESI.HHE. ML:1.8 0.00034250000000000003 1.4 AML other m 2018-10-31T17:39:21.82
IV.LNSS.HHE. ML:2.2 0.000727 1.22 AML other m 2018-10-31T17:39:23.95
IV.NRCA.HHE. ML:2.2 0.000825 1.24 AML other m 2018-10-31T17:39:23.63
IV.NRCA.HNE. ML:2.2 0.0007689999999999999 1.26 AML other m 2018-10-31T17:39:23.64
IV.LNSS.HHN. ML:2.2 0.0007585 0.16 AML other m 2018-10-31T17:39:23.84
IV.NRCA.HNN. ML:2.2 0.0007239999999999999 0.9 AML other m 2018-10-31T17:39:23.93
IV.NRCA.HHN. ML:2.2 0.0006745 1.36 AML other m 2018-10-31T17:39:24.04
IV.FDMO.HHN. ML:2.0 0.000313 1.62 AML other m 2018-10-31T17:39:25.90
IV.FDMO.HHE. ML:2.2 0.0005035 0.42 AML other m 2018-10-31T17:39:25.30
IV.RM33.EHN. ML:1.9 0.00023549999999999998 0.26 AML other m 2018-10-31T17:39:28.48
IV.RM33.EHE. ML:1.9 0.00020400000000000003 0.64 AML other m 2018-10-31T17:39:28.58
IV.MGAB.HNN. ML:1.8 0.0001505 0.3 AML other m 2018-10-31T17:39:28.70
IV.MTRA.EHN. ML:2.0 0.00023299999999999997 1.62 AML other m 2018-10-31T17:39:28.04
IV.MTRA.EHE. ML:2.0 0.000242 1.64 AML other m 2018-10-31T17:39:29.04
IV.SMA1.EHN. ML:2.1 0.00029400000000000004 0.58 AML other m 2018-10-31T17:39:29.27
IV.SMA1.EHE. ML:2.1 0.00032999999999999994 0.22 AML other m 2018-10-31T17:39:29.63
IV.CAMP.HHN. ML:1.4 0.00005545 0.44 AML other m 2018-10-31T17:39:31.49
IV.FIAM.HHE. ML:1.6 0.00007149999999999999 1.02 AML other m 2018-10-31T17:39:31.18
IV.SRES.HHN. ML:1.7 0.0000925 0.36 AML other m 2018-10-31T17:39:31.84
IV.CAMP.HHE. ML:1.4 0.00004425 1.38 AML other m 2018-10-31T17:39:31.20
IV.MGAB.HNE. ML:1.9 0.0001815 1.48 AML other m 2018-10-31T17:39:32.00
IV.MGAB.HHE. ML:1.9 0.0001795 1.46 AML other m 2018-10-31T17:39:32.00
IV.EL6.EHE. ML:2.2 0.00027100000000000003 0.38 AML other m 2018-10-31T17:39:32.76
IV.MGAB.HHN. ML:1.8 0.000156 1.14 AML other m 2018-10-31T17:39:33.11
IV.EL6.EHN. ML:2.2 0.000251 0.18 AML other m 2018-10-31T17:39:33.27
IV.MF5.EHE. ML:1.9 0.0001485 1.58 AML other m 2018-10-31T17:39:34.79
IV.MF5.EHN. ML:1.8 0.000135 0.28 AML other m 2018-10-31T17:39:34.82
IV.SRES.HHE. ML:1.6 0.00007944999999999999 1.44 AML other m 2018-10-31T17:39:35.93
IV.FIAM.HHN. ML:1.5 0.00005895 1.46 AML other m 2018-10-31T17:39:35.99
IV.TERO.HHN. ML:1.7 0.00007495 1.24 AML other m 2018-10-31T17:39:36.84
IV.TERO.HHE. ML:1.7 0.00007805000000000001 1.02 AML other m 2018-10-31T17:39:36.39
IV.ARVD.HHE. ML:1.6 0.0000518 0.96 AML other m 2018-10-31T17:39:36.79
IV.ARVD.HHN. ML:1.4 0.00003555 0.9 AML other m 2018-10-31T17:39:37.82
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