Earthquake with magnitude of ML 1.6 on date 31-08-2019 and time 03:48:50 (UTC) in region 4 km W Trevi (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km W Trevi (PG), on

  • 31-08-2019 03:48:50 (UTC)
  • 31-08-2019 05:48:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.7 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Trevi PG 4 8469 8469
Castel Ritaldi PG 5 3278 11747
Montefalco PG 5 5679 17426
Campello sul Clitunno PG 8 2442 19868
Foligno PG 10 57155 77023
Giano dell'Umbria PG 11 3846 80869
Bevagna PG 11 5081 85950
Gualdo Cattaneo PG 13 6155 92105
Spoleto PG 15 38218 130323
Spello PG 15 8645 138968
Vallo di Nera PG 17 364 139332
Massa Martana PG 17 3770 143102
Cannara PG 18 4305 147407
Sant'Anatolia di Narco PG 18 564 147971
Cerreto di Spoleto PG 18 1075 149046
Sellano PG 19 1079 150125
Scheggino PG 20 461 150586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Foligno (57155 inhabitants)
34 Km N of Terni (111501 inhabitants)
37 Km SE of Perugia (166134 inhabitants)
69 Km NE of Viterbo (67173 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
85 Km W of Teramo (54892 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2019-08-31
03:48:50
42.86 12.7 8 2019-08-31
03:56:15
Sala Sismica INGV-Roma 71954541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-31 03:48:50 ± 0.08
Latitude 42.86 ± 0.00
Longitude 12.70 ± 0.00
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71954541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.10702
Epicentral distance of station farthest from the epicenter (degree) 0.71046
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 71954541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-31 03:56:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2019-08-31T03:49:16.46 0.1 undecidable manual S 73 0.6844 50 2.67 15
IV.CAFI.HHZ. 2019-08-31T03:49:15.17 0.1 undecidable manual S 311 0.7105 50 0.6 79
IV.PIEI.HHZ. 2019-08-31T03:49:14.88 0.1 undecidable manual S 350 0.6835 50 1.11 63
IV.ARVD.HHZ. 2019-08-31T03:49:13.77 0.1 undecidable manual S 15 0.6583 50 0.73 75
IV.EL6.EHZ. 2019-08-31T03:49:10.13 0.1 undecidable manual S 32 0.5504 50 0.3 88
IV.ATVO.HHZ. 2019-08-31T03:49:10.39 0.1 undecidable manual S 338 0.5612 50 0.22 89
IV.GUMA.HHZ. 2019-08-31T03:49:09.11 0.1 undecidable manual S 66 0.5054 50 0.62 81
IV.SMA1.EHZ. 2019-08-31T03:49:09.39 0.1 undecidable manual S 116 0.5207 50 0.45 86
IV.MURB.HHZ. 2019-08-31T03:49:06.20 0.1 undecidable manual S 342 0.42 50 0.23 92
IV.SNTG.HHZ. 2019-08-31T03:49:06.38 0.1 undecidable manual S 24 0.429 50 0.14 93
IV.FOSV.EHZ. 2019-08-31T03:49:06.18 0.1 undecidable manual S 6 0.4335 50 -0.2 92
IV.MMO1.EHZ. 2019-08-31T03:49:06.82 0.1 undecidable manual S 85 0.4596 50 -0.33 89
IV.CSP1.EHZ. 2019-08-31T03:49:06.26 0.1 undecidable manual S 58 0.4335 50 -0.12 94
IV.MGAB.HHZ. 2019-08-31T03:49:06.24 0.1 undecidable manual S 277 0.4344 50 -0.15 93
IV.PIEI.HHZ. 2019-08-31T03:49:04.10 1.0 undecidable manual P 350 0.6835 50 0.21 22
IV.CAFI.HHZ. 2019-08-31T03:49:04.50 0.6 positive manual P 311 0.7105 50 0.15 44
IV.MNTT.EHZ. 2019-08-31T03:49:04.59 0.3 negative manual P 73 0.6844 50 0.69 57
IV.LNSS.HHZ. 2019-08-31T03:49:04.29 0.1 undecidable manual S 136 0.3597 50 0.1 95
IV.ARVD.HHZ. 2019-08-31T03:49:03.20 0.6 positive manual P 15 0.6583 50 -0.27 43
IV.ARRO.EHZ. 2019-08-31T03:49:02.08 0.3 undecidable manual S 170 0.2878 104 0.28 70
IV.ATCC.EHZ. 2019-08-31T03:49:02.54 0.1 undecidable manual S 352 0.3256 50 -0.62 84
IV.FDMO.HHZ. 2019-08-31T03:49:02.72 0.1 undecidable manual S 58 0.3318 50 -0.63 84
IV.NRCA.HHZ. 2019-08-31T03:49:02.10 0.1 undecidable manual S 95 0.304 103 -0.33 92
IV.EL6.EHZ. 2019-08-31T03:49:01.20 0.6 positive manual P 32 0.5504 50 -0.41 43
IV.ATVO.HHZ. 2019-08-31T03:49:01.54 0.1 undecidable manual P 338 0.5612 50 -0.27 88
IV.GUMA.HHZ. 2019-08-31T03:49:00.83 0.1 positive manual P 66 0.5054 50 -0.01 94
IV.SMA1.EHZ. 2019-08-31T03:49:00.89 0.1 undecidable manual P 116 0.5207 50 -0.21 90
IV.GAVE.EHZ. 2019-08-31T03:49:00.34 0.1 undecidable manual S 140 0.2221 108 0.97 74
IV.CESX.HHZ. 2019-08-31T03:49:00.84 0.1 undecidable manual S 198 0.268 105 -0.23 95
IV.CSP1.EHZ. 2019-08-31T03:48:59.27 0.6 positive manual P 58 0.4335 50 -0.35 45
IV.MGAB.HHZ. 2019-08-31T03:48:59.31 0.3 negative manual P 277 0.4344 50 -0.31 67
IV.MURB.HHZ. 2019-08-31T03:48:59.13 0.6 undecidable manual P 342 0.42 50 -0.26 46
IV.SNTG.HHZ. 2019-08-31T03:48:59.39 0.6 positive manual P 24 0.429 50 -0.15 47
IV.FOSV.EHZ. 2019-08-31T03:48:59.15 0.3 positive manual P 6 0.4335 50 -0.47 65
IV.MMO1.EHZ. 2019-08-31T03:48:59.71 0.1 positive manual P 85 0.4596 50 -0.36 89
IV.CESI.HHZ. 2019-08-31T03:48:58.83 0.1 undecidable manual S 46 0.2059 109 0.04 99
IV.ASSB.HHZ. 2019-08-31T03:48:58.03 0.1 undecidable manual S 350 0.1826 112 0.09 99
IV.FDMO.HHZ. 2019-08-31T03:48:57.39 0.1 positive manual P 58 0.3318 50 -0.48 88
IV.LNSS.HHZ. 2019-08-31T03:48:57.43 0.6 undecidable manual P 136 0.3597 50 -0.93 37
IV.ATCC.EHZ. 2019-08-31T03:48:57.14 0.1 undecidable manual P 352 0.3256 50 -0.62 84
IV.CESX.HHZ. 2019-08-31T03:48:56.25 0.6 positive manual P 198 0.268 105 -0.3 47
IV.NRCA.HHZ. 2019-08-31T03:48:56.95 0.1 positive manual P 95 0.304 103 -0.39 91
IV.ARRO.EHZ. 2019-08-31T03:48:56.87 0.1 undecidable manual P 170 0.2878 104 -0.11 97
IV.GAVE.EHZ. 2019-08-31T03:48:56.12 0.3 negative manual P 140 0.2221 108 0.55 66
IT.FOPC.HGZ. 2019-08-31T03:48:55.48 0.1 undecidable manual S 1 0.107 124 0.13 100
IV.CESI.HHZ. 2019-08-31T03:48:55.19 0.1 positive manual P 46 0.2059 109 -0.05 99
IV.MOMA.HHZ. 2019-08-31T03:48:55.64 0.1 undecidable manual S 238 0.1124 123 0.1 100
IV.ASSB.HHZ. 2019-08-31T03:48:54.58 0.1 positive manual P 350 0.1826 112 -0.17 97
IV.MOMA.HHZ. 2019-08-31T03:48:53.50 0.1 positive manual P 238 0.1124 123 0.14 99
IT.FOPC.HGZ. 2019-08-31T03:48:53.40 0.1 undecidable manual P 1 0.107 124 0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:2.1 0.001455 0.28 AML other m 2019-08-31T03:48:56.21
IV.MOMA.HNE. ML:2 0.001365 0.16 AML other m 2019-08-31T03:48:56.44
IV.MOMA.HHN. ML:2 0.0013 0.7 AML other m 2019-08-31T03:48:56.38
IV.MOMA.HNN. ML:2 0.001149 0.7 AML other m 2019-08-31T03:48:56.04
IV.ASSB.HHE. ML:1.7 0.000344 0.52 AML other m 2019-08-31T03:48:58.71
IV.ASSB.HHN. ML:1.7 0.000395 1.3 AML other m 2019-08-31T03:48:58.26
IV.CESI.HHN. ML:1.7 0.000303 0.2 AML other m 2019-08-31T03:48:59.13
IV.CESI.HHE. ML:1.4 0.000185 0.64 AML other m 2019-08-31T03:48:59.55
IV.CESX.HHE. ML:1.8 0.0003475 0.32 AML other m 2019-08-31T03:49:01.69
IV.GAVE.EHN. ML:1.4 0.000174 0.96 AML other m 2019-08-31T03:49:01.87
IV.CESX.HHN. ML:1.8 0.000339 0.38 AML other m 2019-08-31T03:49:02.37
IV.ARRO.EHN. ML:1.6 0.0001785 0.18 AML other m 2019-08-31T03:49:02.90
IV.ARRO.EHE. ML:1.5 0.0001525 0.24 AML other m 2019-08-31T03:49:03.17
IV.ATCC.EHE. ML:1.7 0.0001965 0.58 AML other m 2019-08-31T03:49:03.68
IV.NRCA.HHN. ML:1.8 0.000269 0.14 AML other m 2019-08-31T03:49:03.90
IV.ATCC.EHN. ML:1.6 0.000168 0.12 AML other m 2019-08-31T03:49:04.18
IV.NRCA.HHE. ML:1.8 0.000273 0.44 AML other m 2019-08-31T03:49:04.46
IV.FDMO.HHN. ML:1.4 0.0001075 0.94 AML other m 2019-08-31T03:49:04.86
IV.GAVE.EHE. ML:1.4 0.000172 0.7 AML other m 2019-08-31T03:49:04.86
IV.FDMO.HHE. ML:1.6 0.0001555 0.26 AML other m 2019-08-31T03:49:04.83
IV.MURB.HHE. ML:1.8 0.0002025 0.28 AML other m 2019-08-31T03:49:06.39
IV.LNSS.HHE. ML:1.5 0.000107 0.1 AML other m 2019-08-31T03:49:06.24
IV.LNSS.HHN. ML:1.5 0.00010545 0.14 AML other m 2019-08-31T03:49:06.33
IV.MGAB.HHE. ML:1.5 9.075E-5 1.66 AML other m 2019-08-31T03:49:07.89
IV.SNTG.HHE. ML:1.4 6.605E-5 0.3 AML other m 2019-08-31T03:49:07.52
IV.FOSV.EHE. ML:1.4 7.0E-5 0.58 AML other m 2019-08-31T03:49:07.38
IV.MURB.HHN. ML:2 0.0002735 0.24 AML other m 2019-08-31T03:49:07.39
IV.CSP1.EHE. ML:1.7 0.0001275 1.38 AML other m 2019-08-31T03:49:07.20
IV.SNTG.HHN. ML:1.4 7.39E-5 1.4 AML other m 2019-08-31T03:49:08.11
IV.FOSV.EHN. ML:1.4 7.165E-5 0.42 AML other m 2019-08-31T03:49:08.71
IV.GUMA.HHN. ML:1.9 0.00018 0.3 AML other m 2019-08-31T03:49:09.48
IV.CSP1.EHN. ML:1.7 0.00014485 0.3 AML other m 2019-08-31T03:49:09.55
IV.GUMA.HHE. ML:2 0.000238 0.4 AML other m 2019-08-31T03:49:10.88
IV.EL6.EHE. ML:2 0.0001885 0.84 AML other m 2019-08-31T03:49:12.12
IV.MGAB.HHN. ML:1.6 0.0001046 0.8 AML other m 2019-08-31T03:49:12.37
IV.EL6.EHN. ML:1.7 0.0001075 0.6 AML other m 2019-08-31T03:49:12.51
IV.ATVO.HHN. ML:1.2 2.77E-5 0.26 AML other m 2019-08-31T03:49:14.61
IV.ATVO.HHE. ML:1.3 3.79E-5 0.7 AML other m 2019-08-31T03:49:15.41
IV.SMA1.EHN. ML:1.5 7.63E-5 0.26 AML other m 2019-08-31T03:49:15.48
IV.PIEI.HHN. ML:1.3 2.825E-5 0.92 AML other m 2019-08-31T03:49:15.04
IV.PIEI.HHE. ML:1.4 3.385E-5 0.44 AML other m 2019-08-31T03:49:15.33
IV.ARVD.HHN. ML:1.1 2.245E-5 0.82 AML other m 2019-08-31T03:49:15.38
IV.ARVD.HHE. ML:1.2 2.625E-5 0.44 AML other m 2019-08-31T03:49:17.07
IV.CAFI.HHN. ML:1.4 3.82E-5 0.82 AML other m 2019-08-31T03:49:17.17
IV.CAFI.HHE. ML:1.3 2.94E-5 1.18 AML other m 2019-08-31T03:49:17.23
IV.SMA1.EHE. ML:1.4 5.84E-5 1.58 AML other m 2019-08-31T03:49:19.95
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download