Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.1 on date 16-06-2023 and time 10:04:31 (Italy) in region 3 km NE Trevi (PG)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 3 km NE Trevi (PG), on

  • 16-06-2023 08:04:31 (UTC)
  • 16-06-2023 10:04:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9050, 12.7620 at 10 km depth.

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

Event type: quarry blast.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Foligno PG 7 57155 65624
Montefalco PG 9 5679 71303
Campello sul Clitunno PG 9 2442 73745
Castel Ritaldi PG 12 3278 77023
Spello PG 12 8645 85668
Bevagna PG 13 5081 90749
Sellano PG 14 1079 91828
Cerreto di Spoleto PG 16 1075 92903
Gualdo Cattaneo PG 17 6155 99058
Giano dell'Umbria PG 17 3846 102904
Vallo di Nera PG 17 364 103268
Valtopina PG 17 1398 104666
Cannara PG 18 4305 108971
Spoleto PG 19 38218 147189
Sant'Anatolia di Narco PG 20 564 147753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km SE of Foligno (57155 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
39 Km N of Terni (111501 inhabitants)
76 Km NE of Viterbo (67173 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
95 Km SE of Arezzo (99543 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
Reviewed
Rev100 		ML 1.1 2023-06-16
08:04:31		 42.9047 12.7622 10 2023-06-16
08:42:58		 Sala Sismica INGV-Roma 118441551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-06-16 08:04:31 ± 0.14
Latitude 42.9047 ± 0.0081
Longitude 12.7622 ± 0.0110
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 118441551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 863
Semi-minor axis of confidence ellipse (meter) 856
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49103
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 118441551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-06-16 08:42:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2023-06-16T08:05:10.82 3.0 undecidable manual S 0 0
IV.NRCA.HHZ. 2023-06-16T08:04:42.31 0.6 undecidable manual S 105 29.748 50 0.14 49
IV.EL6.EHZ. 2023-06-16T08:04:41.62 1.0 positive manual P 30 54.501 50 0.12 24
IV.GAVE.EHN. 2023-06-16T08:04:41.70 0.3 undecidable manual S 155 25.8519 50 0.55 67
IV.LNSS.HNE. 2023-06-16T08:04:39.09 0.1 undecidable manual P 146 40.4262 50 -0.23 95
IV.CSP1.EHZ. 2023-06-16T08:04:39.49 0.1 undecidable manual P 60 41.5251 50 0 99
IV.ASSB.HHZ. 2023-06-16T08:04:38.83 0.3 undecidable manual S 331 17.4714 120 0.33 73
IV.CESI.HHZ. 2023-06-16T08:04:38.37 0.3 undecidable manual S 46 16.0728 122 0.29 74
IV.ATCC.EHE. 2023-06-16T08:04:38.35 0.3 undecidable manual P 342 32.6451 50 0.22 72
IV.NRCA.HHZ. 2023-06-16T08:04:37.41 0.6 positive manual P 105 29.748 50 -0.26 48
IV.MML1.EHZ. 2023-06-16T08:04:37.30 0.1 undecidable manual P 36 28.749 50 -0.22 97
IV.GAVE.EHN. 2023-06-16T08:04:36.91 0.6 undecidable manual P 155 25.8519 50 -0.18 49
IV.ASSB.HHZ. 2023-06-16T08:04:35.30 0.1 undecidable manual P 331 17.4714 120 -0.25 98
IV.CESI.HHZ. 2023-06-16T08:04:35.14 0.1 undecidable manual P 46 16.0728 122 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.3 0.000174 0.94 AML other m 2023-06-16T08:04:39.24
IV.ASSB.HHE. ML:1.0 0.00009185 1.02 AML other m 2023-06-16T08:04:40.78
IV.CESI.HHN. ML:1.1 0.00011899999999999999 0.46 AML other m 2023-06-16T08:04:40.46
IV.CESI.HHE. ML:1.0 0.00007875 1.56 AML other m 2023-06-16T08:04:40.16
IV.NRCA.HHN. ML:1.0 0.0000498 0.46 AML other m 2023-06-16T08:04:42.46
IV.NRCA.HHE. ML:1.1 0.000067 1.86 AML other m 2023-06-16T08:04:43.06
IV.FDMO.HHN. ML:1.1 0.000055150000000000006 0.26 AML other m 2023-06-16T08:04:44.27
IV.FDMO.HHE. ML:1.0 0.0000506 0.2 AML other m 2023-06-16T08:04:44.33
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