Earthquake 2 km W Gubbio (PG), Magnitude ML 0.1, 31 May 2021 time 10:22:21 (Timezone Italy)

A magnitude ML 0.1 (quarry blast) earthquake occured in region: 2 km W Gubbio (PG), on

31-05-2021 08:22:21 (UTC)
31-05-2021 10:22:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3630, 12.5520 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.

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Display location by

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).

Municipality	Region	Distance (km)	Inhabitants	Cumulative Inhabitants
Gubbio	PG	2	32216	32216
Scheggia e Pascelupo	PG	11	1393	33609
Pietralunga	PG	13	2111	35720
Costacciaro	PG	13	1216	36936
Cantiano	PU	14	2245	39181
Sigillo	PG	16	2404	41585
Montone	PG	18	1680	43265
Fossato di Vico	PG	19	2840	46105
Umbertide	PG	19	16681	62786

Municipalities with at least 50000 inhabitants

An earthquake occurred to

31 Km NE of Perugia (166134 inhabitants)

47 Km N of Foligno (57155 inhabitants)

55 Km E of Arezzo (99543 inhabitants)

66 Km SW of Fano (60888 inhabitants)

68 Km SW of Pesaro (94582 inhabitants)

78 Km S of Rimini (147750 inhabitants)

83 Km W of Ancona (100861 inhabitants)

89 Km N of Terni (111501 inhabitants)

90 Km S of Cesena (96758 inhabitants)

99 Km E of Siena (53903 inhabitants)

Recent and historical seismicity

Not available maps for this sismic event.

Seismic hazard

Not available maps for this sismic event.

Shakemap

Not available maps for this sismic event.

Felt maps

Not available maps for this sismic event.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Bulletin Rev1000	ML 0.1	2021-05-31 08:22:21	43.3627	12.5517	1	2021-12-29 11:12:05	Bollettino Sismico Italiano INGV	91439801
Reviewed Rev100	ML 1.4	2021-05-31 08:22:20	43.3522	12.5605	8	2021-12-28 15:24:03	Sala Sismica INGV-Roma	90656971

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2021-05-31 08:22:21 ± 0.1
Latitude	43.3627 ± 0.0063
Longitude	12.5517 ± 0.0074
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	91439801

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	740
Semi-minor axis of confidence ellipse (meter)	570
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	335
Circular confidence region, given by single value of horizontal uncertainty (meter)	740.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	116
Number of associated phases, regardless of their use for origin computation	10
Number of defining phases	10
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.22
Epicentral distance of station closest to the epicenter (degree)	0.01529
Epicentral distance of station farthest from the epicenter (degree)	0.17357
Number of stations at which the event was observed	10
Number of stations from which data was used for origin computation	10

Magnitudes information

ML:1.4

Field	Value
Value	1.4
Uncertainty	0.3
Num. used stations	2
Type of magnitude	ML
Reference to an origin	90656971
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2021-05-31 08:31:16

ML:0.1

Field	Value
Value	0.1
Uncertainty	0.2
Num. used stations	4
Type of magnitude	ML
Reference to an origin	91439801
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2021-10-14 10:00:30

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.TB03.DHZ.01	2021-05-31T08:22:24.16	0.6	undecidable	manual	P	291	12.1767	92	0.52	46
IV.PIEI.HHZ.	2021-05-31T08:22:24.90	0.3	undecidable	manual	P	356	19.2696	91	-0.15	74
IV.ATPC.HNZ.	2021-05-31T08:22:24.51	0.3	undecidable	manual	P	330	15.1737	92	0.28	72
IV.MURB.HHZ.	2021-05-31T08:22:23.47	0.3	undecidable	manual	P	191	11.2776	93	0.02	77
IV.ATBU.EHZ.	2021-05-31T08:22:23.62	0.3	undecidable	manual	P	359	12.5763	92	-0.09	75
IV.ATLO.HNZ.	2021-05-31T08:22:23.68	0.3	undecidable	manual	P	246	12.7761	92	-0.08	76
IV.TB01.DHZ.	2021-05-31T08:22:23.07	0.3	undecidable	manual	P	283	9.5793	93	-0.05	77
IV.ATVO.HHZ.	2021-05-31T08:22:23.30	0.3	undecidable	manual	P	281	11.877	92	-0.28	73
IV.ATSC.EHZ.	2021-05-31T08:22:23.50	0.3	undecidable	manual	P	58	12.7761	92	-0.26	73
IV.ATFO.HHZ.	2021-05-31T08:22:21.75	0.1	undecidable	manual	P	75	1.6983	107	0.21	100

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.ATVO.HHN.	ML:0.0	0.000014943483	2.0608	AML	other	m	2021-05-31T08:22:25.95
IV.ATVO.HHE.	ML:0.4	0.00003409927	0.16	AML	other	m	2021-05-31T08:22:25.86
IV.PIEI.HHE.	ML:0.0	0.000009736647500000001	1.1008	AML	other	m	2021-05-31T08:22:28.56
IV.PIEI.HHN.	ML:0.0	0.000010407980500000001	0.0576	AML	other	m	2021-05-31T08:22:28.68

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Fault Plane solutions in the area

Not available maps for this sismic event.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download

Earthquake (quarry blast) with magnitude of ML 0.1 on date 31-05-2021 and time 10:22:21 (Italy) in region 2 km W Gubbio (PG)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.4

ML:0.1