Earthquake 5 km SE Monteleone di Spoleto (PG), Magnitude ML 1.0, 4 January 2021 time 17:21:07 (Timezone Italy)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Monteleone di Spoleto (PG), on

04-01-2021 16:21:07 (UTC)
04-01-2021 17:21:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6170, 12.9980 at 11 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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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
Monteleone di Spoleto	PG	5	599	599
Leonessa	RI	7	2435	3034
Cascia	PG	11	3217	6251
Poggiodomo	PG	12	117	6368
Posta	RI	13	694	7062
Polino	TR	13	233	7295
Cittareale	RI	13	482	7777
Poggio Bustone	RI	16	2055	9832
Borbona	RI	16	617	10449
Rivodutri	RI	16	1253	11702
Morro Reatino	RI	17	373	12075
Ferentillo	TR	17	1913	13988
Scheggino	PG	17	461	14449
Cantalice	RI	18	2755	17204
Sant'Anatolia di Narco	PG	19	564	17768
Micigliano	RI	19	127	17895
Montefranco	TR	19	1276	19171
Labro	RI	19	374	19545
Arrone	TR	19	2763	22308

Municipalities with at least 50000 inhabitants

An earthquake occurred to

29 Km E of Terni (111501 inhabitants)

44 Km NW of L'Aquila (69753 inhabitants)

45 Km SE of Foligno (57155 inhabitants)

58 Km W of Teramo (54892 inhabitants)

72 Km NE of Guidonia Montecelio (88673 inhabitants)

74 Km SE of Perugia (166134 inhabitants)

74 Km N of Tivoli (56533 inhabitants)

76 Km E of Viterbo (67173 inhabitants)

91 Km NE of Roma (2864731 inhabitants)

95 Km W of Montesilvano (53738 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 1.0	2021-01-04 16:21:07	42.6173	12.9985	11	2021-07-12 16:54:56	Bollettino Sismico Italiano INGV	86396371
Reviewed Rev100	ML 1.1	2021-01-04 16:21:07	42.6208	12.9992	14	2021-01-04 16:29:17	Sala Sismica INGV-Roma	86017731

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2021-01-04 16:21:07 ± 0.05
Latitude	42.6173 ± 0.0027
Longitude	12.9985 ± 0.0037
Depth (km)	11 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-INGV
Event type	earthquake
Origin ID	86396371

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	315
Semi-minor axis of confidence ellipse (meter)	103
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	84
Circular confidence region, given by single value of horizontal uncertainty (meter)	320.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	60
Number of associated phases, regardless of their use for origin computation	26
Number of defining phases	26
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.16
Epicentral distance of station closest to the epicenter (degree)	0.03417
Epicentral distance of station farthest from the epicenter (degree)	0.62323
Number of stations at which the event was observed	14
Number of stations from which data was used for origin computation	14

Magnitudes information

ML:1.0

Field	Value
Value	1.0
Uncertainty	0.3
Num. used stations	8
Type of magnitude	ML
Reference to an origin	86396371
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2021-01-20 09:33:18

ML:1.1

Field	Value
Value	1.1
Uncertainty	0.3
Num. used stations	8
Type of magnitude	ML
Reference to an origin	86017731
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2021-01-04 16:29:17

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.ASSB.HHN.	2021-01-04T16:21:24.98	0.6	undecidable	manual	S	330	54.7008	90	0.22	45
IV.FDMO.HHN.	2021-01-04T16:21:22.64	0.6	undecidable	manual	S	9	47.0196	90	-0.09	46
IV.MOMA.HNN.	2021-01-04T16:21:21.24	0.6	undecidable	manual	S	301	40.626	90	0.23	45
IV.CESI.HNN.	2021-01-04T16:21:21.89	0.6	undecidable	manual	S	350	43.7229	90	0.06	47
IV.MMO1.EHN.	2021-01-04T16:21:21.49	0.6	undecidable	manual	S	40	41.1255	90	0.33	45
IV.FIAM.HNN.	2021-01-04T16:21:20.58	0.3	undecidable	manual	S	166	39.9267	90	-0.25	69
IV.MTCE.HHZ.	2021-01-04T16:21:19.89	0.6	undecidable	manual	P	198	69.1752	90	0.09	44
IV.MC2.EHZ.	2021-01-04T16:21:19.85	0.6	undecidable	manual	S	25	36.1416	91	0.04	48
IV.SMA1.EHZ.	2021-01-04T16:21:17.67	0.3	undecidable	manual	S	87	27.5502	91	0.16	71
IV.ASSB.HHN.	2021-01-04T16:21:17.64	0.6	undecidable	manual	P	330	54.7008	90	0.08	46
IV.FDMO.HHN.	2021-01-04T16:21:16.42	0.6	undecidable	manual	P	9	47.0196	90	0.04	47
IV.NRCA.HHZ.	2021-01-04T16:21:16.52	0.3	undecidable	manual	S	21	25.752	91	-0.53	64
IV.FIAM.HNN.	2021-01-04T16:21:15.19	0.3	undecidable	manual	P	166	39.9267	90	-0.09	71
IV.MMO1.EHN.	2021-01-04T16:21:15.91	0.6	undecidable	manual	P	40	41.1255	90	0.44	44
IV.ARRO.EHZ.	2021-01-04T16:21:15.40	0.6	undecidable	manual	S	258	19.4694	92	0.03	49
IV.MOMA.HNN.	2021-01-04T16:21:15.54	0.6	undecidable	manual	P	301	40.626	90	0.15	46
IV.CESI.HNN.	2021-01-04T16:21:15.80	0.6	undecidable	manual	P	350	43.7229	90	-0.06	47
IV.MC2.EHZ.	2021-01-04T16:21:14.62	0.6	undecidable	manual	P	25	36.1416	91	-0.08	47
IV.CAMP.HHN.	2021-01-04T16:21:14.34	0.6	undecidable	manual	P	105	34.743	91	-0.14	47
IV.GAVE.EHZ.	2021-01-04T16:21:13.16	0.3	undecidable	manual	S	314	11.877	111	-0.21	72
IV.SMA1.EHZ.	2021-01-04T16:21:13.43	0.1	undecidable	manual	P	87	27.5502	91	0.06	96
IV.NRCA.HHZ.	2021-01-04T16:21:12.89	0.6	undecidable	manual	P	21	25.752	91	-0.21	47
IV.LNSS.HHZ.	2021-01-04T16:21:11.89	0.1	undecidable	manual	S	115	3.7962	156	0.07	100
IV.ARRO.EHZ.	2021-01-04T16:21:11.87	0.3	undecidable	manual	P	258	19.4694	92	-0.26	71
IV.LNSS.HHZ.	2021-01-04T16:21:10.25	0.1	undecidable	manual	P	115	3.7962	156	0.17	98
IV.GAVE.EHZ.	2021-01-04T16:21:10.99	0.1	undecidable	manual	P	314	11.877	111	0.01	100

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.LNSS.HHN.	ML:1.2	0.000264731	1.8592	AML	other	m	2021-01-04T16:21:11.94
IV.LNSS.HHE.	ML:1.4	0.00034615914999999996	1.8464	AML	other	m	2021-01-04T16:21:12.01
IV.GAVE.EHE.	ML:1.3	0.00020050000000000002	0.16	AML	other	m	2021-01-04T16:21:13.38
IV.GAVE.EHN.	ML:1.2	0.0001655	0.24	AML	other	m	2021-01-04T16:21:13.60
IV.NRCA.HHE.	ML:0.8	0.000036886735	0.2048	AML	other	m	2021-01-04T16:21:16.94
IV.NRCA.HHN.	ML:0.6	0.000026831460000000003	0.1408	AML	other	m	2021-01-04T16:21:17.59
IV.SMA1.EHN.	ML:0.8	0.000033043825	0.2816	AML	other	m	2021-01-04T16:21:17.98
IV.SMA1.EHE.	ML:0.9	0.000041875395	1.744	AML	other	m	2021-01-04T16:21:18.90

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 with magnitude of ML 1.0 on date 04-01-2021 and time 17:21:07 (Italy) in region 5 km SE Monteleone di Spoleto (PG)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.0

ML:1.1