Earthquake 9 km SE Castelsantangelo sul Nera (MC), Magnitude ML 2.1, 4 August 2020 time 10:47:45 (Timezone UTC)

A magnitude ML 2.1 earthquake occured in region: 9 km SE Castelsantangelo sul Nera (MC), on

04-08-2020 10:47:45 (UTC)
04-08-2020 12:47:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8270, 13.2080 at 8 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
Castelsantangelo sul Nera	MC	9	281	281
Arquata del Tronto	AP	9	1178	1459
Norcia	PG	10	4957	6416
Montegallo	AP	10	523	6939
Montemonaco	AP	13	604	7543
Ussita	MC	14	444	7987
Preci	PG	15	724	8711
Accumoli	RI	15	667	9378
Visso	MC	15	1107	10485
Montefortino	FM	17	1178	11663
Acquasanta Terme	AP	18	2916	14579
Bolognola	MC	19	142	14721
Cascia	PG	20	3217	17938

Municipalities with at least 50000 inhabitants

An earthquake occurred to

44 Km E of Foligno (57155 inhabitants)

45 Km W of Teramo (54892 inhabitants)

55 Km NE of Terni (111501 inhabitants)

55 Km N of L'Aquila (69753 inhabitants)

74 Km E of Perugia (166134 inhabitants)

85 Km W of Montesilvano (53738 inhabitants)

92 Km S of Ancona (100861 inhabitants)

92 Km W of Pescara (121014 inhabitants)

95 Km NW of Chieti (51815 inhabitants)

100 Km NE of Guidonia Montecelio (88673 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 2.1	2020-08-04 10:47:45	42.8272	13.2082	8	2020-11-19 12:36:56	Bollettino Sismico Italiano INGV	81727981
Reviewed Rev100	ML 2.1	2020-08-04 10:47:45	42.8267	13.2048	7	2020-08-04 10:56:49	Sala Sismica INGV-Roma	81634321

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2020-08-04 10:47:45 ± 0.05
Latitude	42.8272 ± 0.0027
Longitude	13.2082 ± 0.0037
Depth (km)	8 ± 0 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-INGV
Event type	earthquake
Origin ID	81727981

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	288
Semi-minor axis of confidence ellipse (meter)	175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	259
Circular confidence region, given by single value of horizontal uncertainty (meter)	290.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	44
Number of associated phases, regardless of their use for origin computation	53
Number of defining phases	50
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.27
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.86515
Number of stations at which the event was observed	34
Number of stations from which data was used for origin computation	31

Magnitudes information

ML:2.1

Field	Value
Value	2.1
Uncertainty	0.3
Num. used stations	48
Type of magnitude	ML
Reference to an origin	81727981
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2020-08-07 07:57:31

ML:2.1

Field	Value
Value	2.1
Uncertainty	0.3
Num. used stations	48
Type of magnitude	ML
Reference to an origin	81634321
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2020-08-04 10:56:49

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.SEI.HHZ.	2020-08-04T10:48:41.32	3.0	undecidable	manual	Sn				-0.14	0
IV.VIVA.HHZ.	2020-08-04T10:48:08.41	3.0	negative	manual	P				0.88	0
IV.ATCC.EHZ.	2020-08-04T10:48:05.28	0.3	undecidable	manual	S	311	60.7947	50	0.41	64
IV.EL6.EHZ.	2020-08-04T10:48:04.02	0.3	undecidable	manual	S	351	56.3991	50	0.34	66
IV.PARC.HHZ.	2020-08-04T10:48:04.03	3.0	undecidable	manual	P					0
IV.PIEI.HHZ.	2020-08-04T10:48:02.22	0.3	undecidable	manual	P	326	95.6376	50	0.18	63
IV.ASSB.HHZ.	2020-08-04T10:48:02.61	0.3	undecidable	manual	S	298	50.616	50	0.46	65
IV.MPAG.EHZ.	2020-08-04T10:48:02.46	0.3	undecidable	manual	P	338	96.0261	50	0.35	61
IV.ARVD.HHZ.	2020-08-04T10:47:59.24	0.3	undecidable	manual	P	344	77.4669	50	0	68
IV.SAP2.EHZ.	2020-08-04T10:47:58.04	0.6	undecidable	manual	S	27	33.6441	103	0.56	43
IV.MURB.HHZ.	2020-08-04T10:47:58.78	0.3	undecidable	manual	P	311	73.5708	50	0.15	66
IV.RM33.EHZ.	2020-08-04T10:47:58.28	0.6	undecidable	manual	S	179	35.3424	103	0.26	46
IV.PF6.EHN.	2020-08-04T10:47:57.12	0.3	undecidable	manual	S	358	34.5432	103	-0.63	63
IV.VCEL.EHZ.	2020-08-04T10:47:57.68	0.3	undecidable	manual	P	133	70.4739	50	-0.48	62
IV.CESI.HHZ.	2020-08-04T10:47:56.67	0.6	undecidable	manual	S	309	31.5462	104	-0.09	48
IV.MF5.EHZ.	2020-08-04T10:47:56.04	0.6	undecidable	manual	S	49	27.1506	106	0.76	40
IV.LNSS.HHZ.	2020-08-04T10:47:56.26	0.6	undecidable	manual	S	209	28.3494	106	0.56	43
IV.ATCC.EHZ.	2020-08-04T10:47:56.59	0.1	undecidable	manual	P	311	60.7947	50	-0.09	92
IV.FIAM.HHZ.	2020-08-04T10:47:56.68	0.6	undecidable	manual	P	187	62.493	50	-0.25	44
IV.EL6.EHZ.	2020-08-04T10:47:55.54	0.1	undecidable	manual	P	351	56.3991	50	-0.45	86
IV.GUMA.HHZ.	2020-08-04T10:47:55.99	0.3	undecidable	manual	S	22	28.0497	106	0.39	68
IV.GAVE.EHZ.	2020-08-04T10:47:55.57	0.6	undecidable	manual	S	240	29.6481	105	-0.54	44
IV.CSP1.EHZ.	2020-08-04T10:47:55.77	0.3	undecidable	manual	S	359	29.3484	105	-0.26	70
IV.ASSB.HHZ.	2020-08-04T10:47:54.80	0.1	undecidable	manual	P	298	50.616	50	-0.3	89
IV.FDMO.HHZ.	2020-08-04T10:47:54.39	0.6	undecidable	manual	S	337	25.2525	107	-0.25	47
IV.SMA1.EHZ.	2020-08-04T10:47:54.15	0.3	undecidable	manual	S	155	24.1536	108	-0.14	73
IV.ARRO.EHZ.	2020-08-04T10:47:54.16	0.1	undecidable	manual	P	233	45.3213	50	-0.13	93
IT.MTCL.HGZ.	2020-08-04T10:47:54.74	0.3	undecidable	manual	S	318	25.0527	107	0.14	73
IV.MNTT.EHZ.	2020-08-04T10:47:54.07	0.1	undecidable	manual	P	50	40.8258	50	0.47	88
IV.OFFI.HHZ.	2020-08-04T10:47:53.95	0.3	undecidable	manual	P	73	40.626	50	0.39	67
IV.MML1.HNE.	2020-08-04T10:47:52.58	0.3	undecidable	manual	P	329	37.1295	50	-0.44	67
IV.PF6.EHN.	2020-08-04T10:47:52.14	0.3	undecidable	manual	P	358	34.5432	103	-0.42	67
IV.SAP2.EHZ.	2020-08-04T10:47:52.38	0.1	undecidable	manual	P	27	33.6441	103	-0.03	97
IV.MTRA.EHZ.	2020-08-04T10:47:52.40	0.3	undecidable	manual	S	117	17.1717	115	0.35	70
IV.RM33.EHZ.	2020-08-04T10:47:52.49	0.1	undecidable	manual	P	179	35.3424	103	-0.23	93
IV.TERO.HHN.	2020-08-04T10:47:52.89	0.1	undecidable	manual	P	125	39.4272	50	-0.48	88
IV.GAVE.EHZ.	2020-08-04T10:47:51.70	0.1	undecidable	manual	P	240	29.6481	105	0.08	97
IV.CSP1.EHZ.	2020-08-04T10:47:51.25	0.1	undecidable	manual	P	359	29.3484	105	-0.31	93
IV.CESI.HHZ.	2020-08-04T10:47:51.89	0.1	undecidable	manual	P	309	31.5462	104	-0.1	96
IV.MF5.EHZ.	2020-08-04T10:47:51.27	0.1	undecidable	manual	P	49	27.1506	106	0.14	96
IV.GUMA.HHZ.	2020-08-04T10:47:51.35	0.1	undecidable	manual	P	22	28.0497	106	0.03	98
IV.LNSS.HHZ.	2020-08-04T10:47:51.49	0.1	undecidable	manual	P	209	28.3494	106	0.11	97
IV.FDMO.HHZ.	2020-08-04T10:47:50.56	0.1	undecidable	manual	P	337	25.2525	107	-0.21	95
IV.MMO1.EHZ.	2020-08-04T10:47:50.23	0.1	undecidable	manual	S	50	12.5763	122	-0.39	94
IV.FEMA.HNE.	2020-08-04T10:47:50.17	0.3	undecidable	manual	P	319	19.7691	112	0.44	69
IV.SMA1.EHZ.	2020-08-04T10:47:50.56	0.1	undecidable	manual	P	155	24.1536	108	0	100
IT.MTCL.HGZ.	2020-08-04T10:47:50.73	0.1	undecidable	manual	P	318	25.0527	107	-0.01	99
IV.NRCA.HNZ.	2020-08-04T10:47:49.56	0.3	undecidable	manual	S	275	7.6812	136	0.27	73
IV.MTRA.EHZ.	2020-08-04T10:47:49.38	0.1	undecidable	manual	P	117	17.1717	115	0.11	99
IV.MC2.EHZ.	2020-08-04T10:47:49.76	0.3	undecidable	manual	S	351	9.4794	130	0.01	77
IV.MC2.EHZ.	2020-08-04T10:47:48.05	0.1	negative	manual	P	351	9.4794	130	0.11	100
IV.MMO1.EHZ.	2020-08-04T10:47:48.29	0.1	negative	manual	P	50	12.5763	122	-0.15	99
IV.NRCA.HNZ.	2020-08-04T10:47:47.89	0.1	positive	manual	P	275	7.6812	136	0.21	98

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.NRCA.HHN.	ML:3.0	0.015149999999999999	0.14	AML	other	m	2020-08-04T10:47:49.90
IV.NRCA.HNE.	ML:2.7	0.008475	0.18	AML	other	m	2020-08-04T10:47:50.11
IV.NRCA.HHE.	ML:2.8	0.01018	0.18	AML	other	m	2020-08-04T10:47:50.11
IV.NRCA.HNN.	ML:2.9	0.014199999999999999	1.88	AML	other	m	2020-08-04T10:47:50.03
IV.MTRA.HNE.	ML:2.2	0.001605	1.44	AML	other	m	2020-08-04T10:47:53.97
IV.MTRA.EHE.	ML:2.2	0.0015699999999999998	1.44	AML	other	m	2020-08-04T10:47:53.25
IV.MTRA.HNN.	ML:2.1	0.001288	1.24	AML	other	m	2020-08-04T10:47:54.93
IV.MTRA.EHN.	ML:2.2	0.001345	1.08	AML	other	m	2020-08-04T10:47:56.00
IV.FDMO.HHN.	ML:1.9	0.0005255	0.84	AML	other	m	2020-08-04T10:47:56.48
IV.GUMA.HHE.	ML:2.8	0.003055	0.28	AML	other	m	2020-08-04T10:47:56.37
IV.GUMA.HHN.	ML:2.6	0.0023	0.5	AML	other	m	2020-08-04T10:47:56.65
IV.GUMA.HNN.	ML:3.2	0.008154999999999999	1.56	AML	other	m	2020-08-04T10:47:56.10
IV.LNSS.HHE.	ML:2.2	0.000894	0.3	AML	other	m	2020-08-04T10:47:57.31
IV.MF5.EHN.	ML:2.1	0.000701	0.48	AML	other	m	2020-08-04T10:47:57.37
IV.FDMO.HHE.	ML:1.9	0.0004855	0.26	AML	other	m	2020-08-04T10:47:57.42
IV.LNSS.HHN.	ML:2.3	0.0009765	0.26	AML	other	m	2020-08-04T10:47:57.45
IV.CESI.HHN.	ML:2.5	0.00138	0.4	AML	other	m	2020-08-04T10:47:57.47
IV.GUMA.HNE.	ML:2.8	0.003195	0.24	AML	other	m	2020-08-04T10:47:57.63
IV.CESI.HHE.	ML:2.2	0.0007099999999999999	0.74	AML	other	m	2020-08-04T10:47:58.48
IV.MF5.EHE.	ML:2.1	0.0007025	0.46	AML	other	m	2020-08-04T10:47:58.74
IV.RM33.EHE.	ML:1.9	0.00029549999999999997	1.34	AML	other	m	2020-08-04T10:47:59.77
IV.GAVE.EHN.	ML:2.0	0.0005905	0.32	AML	other	m	2020-08-04T10:47:59.31
IV.CSP1.EHE.	ML:2.0	0.0005200000000000001	0.8	AML	other	m	2020-08-04T10:47:59.98
IV.SAP2.EHE.	ML:2.1	0.000496	0.24	AML	other	m	2020-08-04T10:47:59.83
IV.GAVE.EHE.	ML:2.2	0.0009	0.22	AML	other	m	2020-08-04T10:48:00.29
IV.CSP1.EHN.	ML:1.8	0.00034750000000000004	0.38	AML	other	m	2020-08-04T10:48:00.46
IV.RM33.EHN.	ML:1.9	0.0003155	1.1	AML	other	m	2020-08-04T10:48:00.41
IV.SMA1.EHN.	ML:2.2	0.0009270000000000001	0.62	AML	other	m	2020-08-04T10:48:01.71
IV.SMA1.EHE.	ML:2.1	0.0008755	0.54	AML	other	m	2020-08-04T10:48:01.43
IV.MNTT.EHN.	ML:2.4	0.0008959999999999999	0.8	AML	other	m	2020-08-04T10:48:01.12
IV.MNTT.EHE.	ML:2.4	0.0008415	0.34	AML	other	m	2020-08-04T10:48:01.56
IV.SAP2.EHN.	ML:2.8	0.0024050000000000005	0.76	AML	other	m	2020-08-04T10:48:01.57
IV.ARRO.EHE.	ML:1.6	0.0001255	0.16	AML	other	m	2020-08-04T10:48:03.25
IV.ASSB.HHE.	ML:1.9	0.0002	0.42	AML	other	m	2020-08-04T10:48:04.07
IV.ARRO.EHN.	ML:1.8	0.0001895	0.18	AML	other	m	2020-08-04T10:48:04.22
IV.ASSB.HHN.	ML:1.9	0.000193	0.92	AML	other	m	2020-08-04T10:48:06.23
IV.FIAM.HHN.	ML:1.4	0.00005545	0.32	AML	other	m	2020-08-04T10:48:06.58
IV.ATCC.EHE.	ML:2.1	0.0002575	1.7	AML	other	m	2020-08-04T10:48:07.02
IV.ATCC.EHN.	ML:2.1	0.000282	1.3	AML	other	m	2020-08-04T10:48:09.27
IV.OFFI.HHN.	ML:2.1	0.0004205	0.64	AML	other	m	2020-08-04T10:48:10.38
IV.ARVD.HHE.	ML:1.7	0.00007489999999999999	1.18	AML	other	m	2020-08-04T10:48:12.08
IV.FIAM.HHE.	ML:1.6	0.0000678	0.64	AML	other	m	2020-08-04T10:48:13.45
IV.OFFI.HHE.	ML:2.2	0.0005245	1.58	AML	other	m	2020-08-04T10:48:13.06
IV.MURB.HHE.	ML:2.3	0.0003055	0.3	AML	other	m	2020-08-04T10:48:14.14
IV.MURB.HHN.	ML:2.3	0.00033350000000000003	0.28	AML	other	m	2020-08-04T10:48:14.45
IV.ARVD.HHN.	ML:1.6	0.0000597	0.42	AML	other	m	2020-08-04T10:48:16.32
IV.PIEI.HHE.	ML:1.8	0.0000579	0.6	AML	other	m	2020-08-04T10:48:20.59
IV.PIEI.HHN.	ML:1.6	0.0000385	0.32	AML	other	m	2020-08-04T10:48:20.80

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
Waveforms	Seismic signals in miniseed + resp format	Download

Earthquake with magnitude of ML 2.1 on date 04-08-2020 and time 10:47:45 (UTC) in region 9 km SE Castelsantangelo sul Nera (MC)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:2.1

ML:2.1