Earthquake (quarry blast) with magnitude of ML 1.2 on date 02-02-2021 and time 12:55:26 (UTC) in region 5 km NE Trevi (PG)

A magnitude ML 1.2 (quarry blast) earthquake occured in region: 5 km NE Trevi (PG), on

  • 02-02-2021 12:55:26 (UTC)
  • 02-02-2021 13:55:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9170, 12.7700 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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 5 8469 8469
Foligno PG 7 57155 65624
Montefalco PG 10 5679 71303
Campello sul Clitunno PG 11 2442 73745
Spello PG 12 8645 82390
Castel Ritaldi PG 13 3278 85668
Sellano PG 13 1079 86747
Bevagna PG 13 5081 91828
Valtopina PG 16 1398 93226
Cerreto di Spoleto PG 16 1075 94301
Gualdo Cattaneo PG 17 6155 100456
Cannara PG 18 4305 104761
Vallo di Nera PG 18 364 105125
Giano dell'Umbria PG 18 3846 108971

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km SE of Foligno (57155 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
41 Km N of Terni (111501 inhabitants)
78 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)
99 Km SW of Ancona (100861 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 1.2 2021-02-02
12:55:26
42.9167 12.7705 1 2021-07-12
16:55:01
Bollettino Sismico Italiano INGV 88004311
Reviewed
Rev100
ML 1.3 2021-02-02
12:55:26
42.9245 12.7417 10 2021-02-02
13:09:37
Sala Sismica INGV-Roma 86784731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-02 12:55:26 ± 0.15
Latitude 42.9167 ± 0.0090
Longitude 12.7705 ± 0.0123
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 88004311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1040
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47754
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 88004311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-11 14:52:31

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 86784731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-02 13:09:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-02-02T12:56:13.15 3.0 undecidable manual S 0.47 0
IV.VIVA.HHZ. 2021-02-02T12:56:05.52 3.0 undecidable manual S -0.45 0
IV.PE3.EHZ. 2021-02-02T12:55:42.72 3.0 undecidable manual P -0.42 0
IV.EL6.EHZ. 2021-02-02T12:55:36.30 0.3 undecidable manual P 30 53.0025 91 -0.93 54
IV.CSP1.EHZ. 2021-02-02T12:55:34.63 0.1 undecidable manual P 61 40.2264 91 -0.04 97
IV.MML1.HNZ. 2021-02-02T12:55:32.04 0.3 undecidable manual P 37 27.2505 91 -0.03 74
IV.NRCA.HNZ. 2021-02-02T12:55:32.42 0.3 undecidable manual P 108 29.4483 91 -0.08 73
IV.GAVE.HNZ. 2021-02-02T12:55:32.11 0.3 undecidable manual P 158 26.8509 91 0.12 73
IV.CESI.HHZ. 2021-02-02T12:55:30.03 0.1 undecidable manual P 48 14.6742 92 0.49 92
IV.ASSB.HHZ. 2021-02-02T12:55:30.02 0.1 undecidable manual P 327 16.6722 92 0.08 100
IV.MOMA.HHZ. 2021-02-02T12:55:30.55 0.3 undecidable manual P 233 20.5683 91 -0.17 73
IT.FOPC.HGZ. 2021-02-02T12:55:28.37 0.3 undecidable manual P 317 7.9809 94 0.15 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.2 0.0001525 0.22 AML other m 2021-02-02T12:55:34.20
IV.ASSB.HHN. ML:1.0 0.00010023454500000001 0.416 AML other m 2021-02-02T12:55:34.54
IV.MOMA.HNN. ML:1.2 0.00014452735 0.3712 AML other m 2021-02-02T12:55:35.35
IV.MOMA.HHE. ML:1.2 0.0001265 0.2 AML other m 2021-02-02T12:55:35.59
IV.CESI.HHN. ML:1.2 0.000175 0.42 AML other m 2021-02-02T12:55:35.49
IV.MOMA.HNE. ML:1.2 0.00011407379500000001 0.3008 AML other m 2021-02-02T12:55:35.49
IV.MOMA.HHN. ML:1.0 0.00007985 1.12 AML other m 2021-02-02T12:55:36.91
IV.MGAB.HNN. ML:1.7 0.0001264124 0.7872 AML other m 2021-02-02T12:55:36.92
IV.CESI.HHE. ML:1.0 0.0001235 0.42 AML other m 2021-02-02T12:55:38.30
IV.CESI.HNE. ML:1.1 0.00014517938 0.4416 AML other m 2021-02-02T12:55:38.08
IV.CESI.HNN. ML:1.3 0.00023859975 0.5504 AML other m 2021-02-02T12:55:39.68
IV.CSP1.EHE. ML:1.3 0.00007228303 0.416 AML other m 2021-02-02T12:55:44.62
IV.MGAB.HNE. ML:1.6 0.000105566755 1.1488 AML other m 2021-02-02T12:55:44.19
IV.EL6.EHN. ML:1.1 0.000032096059 0.2816 AML other m 2021-02-02T12:55:45.59
IV.EL6.EHE. ML:1.4 0.00005426853 0.256 AML other m 2021-02-02T12:55:45.85
IV.CSP1.EHN. ML:1.5 0.00010702592 0.4416 AML other m 2021-02-02T12:55:46.34
IV.MGAB.HHE. ML:0.9 0.00001942746 1.4368 AML other m 2021-02-02T12:55:50.79
IV.MGAB.HHN. ML:1.0 0.00002567767 1.584 AML other m 2021-02-02T12:55:51.87
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