Earthquake with magnitude of ML 0.5 on date 30-09-2020 and time 22:43:01 (UTC) in region 3 km SW Trevi (PG)

A magnitude ML 0.5 earthquake occured in region: 3 km SW Trevi (PG), on

  • 30-09-2020 22:43:01 (UTC)
  • 01-10-2020 00:43:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.85, 12.73 at 10 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 3 8469 8469
Campello sul Clitunno PG 5 2442 10911
Castel Ritaldi PG 6 3278 14189
Montefalco PG 8 5679 19868
Foligno PG 12 57155 77023
Giano dell'Umbria PG 13 3846 80869
Spoleto PG 13 38218 119087
Bevagna PG 14 5081 124168
Vallo di Nera PG 14 364 124532
Cerreto di Spoleto PG 16 1075 125607
Gualdo Cattaneo PG 16 6155 131762
Sant'Anatolia di Narco PG 16 564 132326
Spello PG 17 8645 140971
Sellano PG 17 1079 142050
Scheggino PG 17 461 142511
Massa Martana PG 19 3770 146281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km S of Foligno (57155 inhabitants)
33 Km N of Terni (111501 inhabitants)
40 Km SE of Perugia (166134 inhabitants)
70 Km NE of Viterbo (67173 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SE of Arezzo (99543 inhabitants)
99 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
Reviewed
Rev100
ML 0.5 2020-09-30
22:43:01
42.85 12.73 10 2020-09-30
22:49:31
Sala Sismica INGV-Roma 83398691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 22:43:01 ± 0.05
Latitude 42.85 ± 0.00
Longitude 12.73 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83398691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 345
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 298
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.43887
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 83398691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 22:49:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2020-09-30T22:43:45.22 3.0 undecidable manual S 0.05 0
IV.MMO1.EHZ. 2020-09-30T22:43:17.74 0.1 undecidable manual S 84 0.4389 50 0.28 89
IV.FDMO.HHZ. 2020-09-30T22:43:14.34 0.6 undecidable manual S 55 0.3193 50 0.43 44
IV.ATCC.EHZ. 2020-09-30T22:43:14.62 0.1 undecidable manual S 349 0.3399 50 0.1 95
IV.ARRO.EHZ. 2020-09-30T22:43:12.74 0.1 undecidable manual S 175 0.2734 50 0.19 94
IV.NRCA.HHZ. 2020-09-30T22:43:12.53 0.1 undecidable manual S 94 0.2815 50 -0.26 93
IV.CESX.HHZ. 2020-09-30T22:43:11.90 0.1 undecidable manual S 204 0.2653 50 -0.4 90
IV.CSP1.EHZ. 2020-09-30T22:43:10.47 0.6 negative manual P 55 0.4218 50 -0.02 47
IV.GAVE.EHE. 2020-09-30T22:43:10.50 0.6 undecidable manual S 143 0.1996 113 0.47 45
IV.MMO1.EHZ. 2020-09-30T22:43:10.68 0.6 negative manual P 84 0.4389 50 -0.1 46
IV.CESI.HHZ. 2020-09-30T22:43:09.79 0.1 undecidable manual S 40 0.1988 113 -0.24 95
IV.ASSB.HHZ. 2020-09-30T22:43:09.82 0.3 undecidable manual S 345 0.1979 114 -0.17 72
IV.ATCC.EHZ. 2020-09-30T22:43:09.39 1.0 positive manual P 349 0.3399 50 0.3 23
IV.ARRO.EHZ. 2020-09-30T22:43:08.24 1.0 undecidable manual P 175 0.2734 50 0.29 23
IV.FDMO.HHZ. 2020-09-30T22:43:08.56 1.0 negative manual P 55 0.3193 50 -0.18 23
IV.NRCA.HHZ. 2020-09-30T22:43:07.91 0.6 negative manual P 94 0.2815 50 -0.18 47
IT.FOPC.HGE. 2020-09-30T22:43:07.40 0.1 undecidable manual S 350 0.1196 126 0.04 100
IV.MOMA.HHZ. 2020-09-30T22:43:07.62 0.3 undecidable manual S 248 0.1268 124 0.03 75
IV.CESX.HHZ. 2020-09-30T22:43:07.52 1.0 undecidable manual P 204 0.2653 50 -0.28 23
IV.CESI.HHZ. 2020-09-30T22:43:06.41 0.1 undecidable manual P 40 0.1988 113 -0.09 98
IV.GAVE.EHE. 2020-09-30T22:43:06.27 0.3 undecidable manual P 143 0.1996 113 -0.22 71
IV.ASSB.HHZ. 2020-09-30T22:43:06.47 0.1 undecidable manual P 345 0.1979 114 0 99
IT.GNU.HGN. 2020-09-30T22:43:05.28 0.1 undecidable manual P 248 0.1268 124 0.2 97
IV.MOMA.HHZ. 2020-09-30T22:43:05.04 0.3 positive manual P 248 0.1268 124 -0.05 75
IT.FOPC.HGE. 2020-09-30T22:43:05.11 0.1 undecidable manual P 350 0.1196 126 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:0.8 6.3088135E-5 0.1664 AML other m 2020-09-30T22:43:07.83
IV.MOMA.HHN. ML:0.8 6.004827E-5 0.128 AML other m 2020-09-30T22:43:08.31
IV.CESI.HHE. ML:0.4 1.5339765E-5 0.064 AML other m 2020-09-30T22:43:10.50
IV.CESI.HHN. ML:0.6 2.4469865E-5 0.1152 AML other m 2020-09-30T22:43:11.07
IV.ASSB.HHE. ML:0.6 2.2963535E-5 0.0896 AML other m 2020-09-30T22:43:11.02
IV.ASSB.HHN. ML:0.5 2.0896285E-5 0.0768 AML other m 2020-09-30T22:43:10.62
IV.CESX.HHE. ML:0.3 1.09459665E-5 0.2432 AML other m 2020-09-30T22:43:13.35
IV.CESX.HHN. ML:0.6 1.7604915E-5 0.2048 AML other m 2020-09-30T22:43:14.01
IV.NRCA.HHE. ML:0.7 2.548697E-5 0.1024 AML other m 2020-09-30T22:43:13.77
IV.NRCA.HHN. ML:0.8 3.1188355E-5 0.0768 AML other m 2020-09-30T22:43:13.72
IV.ARRO.EHE. ML:0.3 1.0513165E-5 0.1792 AML other m 2020-09-30T22:43:14.51
IV.ARRO.EHN. ML:0.3 7.5408585E-6 0.2176 AML other m 2020-09-30T22:43:16.56
IV.FDMO.HHE. ML:0.4 8.2775475E-6 0.2432 AML other m 2020-09-30T22:43:15.67
IV.FDMO.HHN. ML:0.1 6.6486982E-6 0.1408 AML other m 2020-09-30T22:43:16.26
IV.ATCC.EHE. ML:0.6 1.29908785E-5 0.2432 AML other m 2020-09-30T22:43:15.60
IV.ATCC.EHN. ML:0.4 9.5383805E-6 0.128 AML other m 2020-09-30T22:43:16.79
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