Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 01-06-2021 and time 03:10:59 (Italy) in region 4 km SW Valfabbrica (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km SW Valfabbrica (PG), on

  • 01-06-2021 01:10:59 (UTC)
  • 01-06-2021 03:10:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1290, 12.5820 at 9 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
Valfabbrica PG 4 3389 3389
Assisi PG 7 28299 31688
Bastia Umbra PG 7 21874 53562
Cannara PG 15 4305 57867
Bettona PG 15 4367 62234
Perugia PG 16 166134 228368
Valtopina PG 16 1398 229766
Torgiano PG 17 6725 236491
Spello PG 17 8645 245136
Nocera Umbra PG 17 5839 250975

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Perugia (166134 inhabitants)
22 Km NW of Foligno (57155 inhabitants)
63 Km N of Terni (111501 inhabitants)
68 Km SE of Arezzo (99543 inhabitants)
87 Km SW of Fano (60888 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Pesaro (94582 inhabitants)
93 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 1.0 2021-06-01
01:10:59		 43.1293 12.5817 9 2021-12-29
11:12:11		 Bollettino Sismico Italiano INGV 92717521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-01 01:10:59 ± 0.08
Latitude 43.1293 ± 0.0027
Longitude 12.5817 ± 0.0062
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 92717521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 20
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 196
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.40739
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 92717521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-13 14:02:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-06-01T01:11:14.21 0.3 undecidable manual S 355 45.2214 50 0.09 69
IV.FDMO.HHZ. 2021-06-01T01:11:13.51 0.3 undecidable manual S 104 42.2244 50 0.19 68
IV.FDMO.HHZ. 2021-06-01T01:11:07.09 0.1 undecidable manual P 104 42.2244 50 -0.22 91
IV.PIEI.HHZ. 2021-06-01T01:11:07.64 0.3 undecidable manual P 355 45.2214 50 -0.13 69
IV.FOSV.EHZ. 2021-06-01T01:11:07.95 0.3 undecidable manual S 38 23.3544 111 0.17 71
IV.MURB.HHZ. 2021-06-01T01:11:05.42 0.1 undecidable manual S 343 15.5733 120 0.11 97
IV.FOSV.EHZ. 2021-06-01T01:11:04.01 0.3 undecidable manual P 38 23.3544 111 -0.1 72
IV.ASSB.HHZ. 2021-06-01T01:11:04.20 0.1 undecidable manual S 147 11.4774 128 0.07 99
IV.ATCC.EHZ. 2021-06-01T01:11:03.04 0.1 undecidable manual S 37 7.7811 139 -0.15 98
IV.ASSB.HHZ. 2021-06-01T01:11:02.05 0.1 negative manual P 147 11.4774 128 0.05 99
IV.MURB.HHZ. 2021-06-01T01:11:02.69 0.1 undecidable manual P 343 15.5733 120 0.01 99
IV.ATCC.EHZ. 2021-06-01T01:11:01.43 0.1 positive manual P 37 7.7811 139 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:1.1 0.0001955 0.5 AML other m 2021-06-01T01:11:03.41
IV.ATCC.EHN. ML:1.1 0.00020750000000000003 0.34 AML other m 2021-06-01T01:11:03.58
IV.ASSB.HHN. ML:1.0 0.000128 0.18 AML other m 2021-06-01T01:11:04.34
IV.ASSB.HHE. ML:1.0 0.000122 0.3 AML other m 2021-06-01T01:11:04.61
IV.MURB.HHN. ML:1.2 0.00014050000000000003 0.28 AML other m 2021-06-01T01:11:06.19
IV.MURB.HHE. ML:1.3 0.00019800000000000002 0.9 AML other m 2021-06-01T01:11:06.77
IV.PIEI.HHE. ML:0.5 0.00001178 0.7 AML other m 2021-06-01T01:11:14.98
IV.PIEI.HHN. ML:0.5 0.000009715 0.36 AML other m 2021-06-01T01:11:15.25
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