Earthquake 6 km W Arquata del Tronto (AP), Magnitude ML 1.6, 29 November 2020 time 16:08:46 (Timezone Italy)

A magnitude ML 1.6 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

29-11-2020 15:08:46 (UTC)
29-11-2020 16:08:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.77, 13.23 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Arquata del Tronto	AP	6	1178	1178
Accumoli	RI	8	667	1845
Norcia	PG	11	4957	6802
Montegallo	AP	12	523	7325
Acquasanta Terme	AP	15	2916	10241
Castelsantangelo sul Nera	MC	16	281	10522
Amatrice	RI	16	2657	13179
Montemonaco	AP	17	604	13783
Cittareale	RI	17	482	14265
Cascia	PG	18	3217	17482
Preci	PG	20	724	18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to

41 Km W of Teramo (54892 inhabitants)

48 Km E of Foligno (57155 inhabitants)

48 Km N of L'Aquila (69753 inhabitants)

53 Km E of Terni (111501 inhabitants)

78 Km E of Perugia (166134 inhabitants)

80 Km W of Montesilvano (53738 inhabitants)

87 Km W of Pescara (121014 inhabitants)

90 Km NW of Chieti (51815 inhabitants)

95 Km NE of Guidonia Montecelio (88673 inhabitants)

96 Km NE of Tivoli (56533 inhabitants)

98 Km S of Ancona (100861 inhabitants)

100 Km E of Viterbo (67173 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

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.

Locations history

Type	Magnitude	Date and Time (UTC)	Latitude	Longitude	Depth (km)	Published time (UTC)	Author	Location ID
Reviewed Rev100	ML 1.6	2020-11-29 15:08:46	42.77	13.23	11	2020-11-29 15:16:49	Sala Sismica INGV-Roma	85091101

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2020-11-29 15:08:46 ± 0.06
Latitude	42.77 ± 0.00
Longitude	13.23 ± 0.00
Depth (km)	11 ± 0 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	100 -> SURVEY-INGV
Event type	earthquake
Origin ID	85091101

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	396
Semi-minor axis of confidence ellipse (meter)	138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	241
Circular confidence region, given by single value of horizontal uncertainty (meter)	400
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	57
Number of associated phases, regardless of their use for origin computation	28
Number of defining phases	27
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.2
Epicentral distance of station closest to the epicenter (degree)	0
Epicentral distance of station farthest from the epicenter (degree)	0.48384
Number of stations at which the event was observed	15
Number of stations from which data was used for origin computation	14

Magnitude information

ML:1.6

Field	Value
Value	1.6
Uncertainty	0.2
Num. used stations	19
Type of magnitude	ML
Reference to an origin	85091101
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2020-11-29 15:16:49

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance	Takeoff_angle	Residual	Weight
IV.SAMA.EHZ.	2020-11-29T15:09:21.53	3.0	undecidable	manual	S				-0.1	0
IV.CESI.HHZ.	2020-11-29T15:08:59.00	0.6	undecidable	manual	S	315	0.3363	90	-0.14	47
IV.CSP1.EHZ.	2020-11-29T15:08:58.70	0.6	undecidable	manual	S	357	0.3265	90	-0.14	48
IV.TERO.HHZ.	2020-11-29T15:08:58.10	0.3	undecidable	manual	S	117	0.3112	90	-0.27	70
IT.MTCL.HGE.	2020-11-29T15:08:57.30	0.3	undecidable	manual	S	324	0.2833	90	-0.25	70
IV.MF5.EHZ.	2020-11-29T15:08:57.90	0.3	undecidable	manual	S	37	0.2797	90	0.45	67
IV.CAMP.HHZ.	2020-11-29T15:08:56.90	0.6	undecidable	manual	S	150	0.2653	91	-0.13	48
IV.MOMA.HHZ.	2020-11-29T15:08:56.71	0.3	undecidable	manual	P	275	0.4838	90	0.3	66
IV.LNSS.HHZ.	2020-11-29T15:08:55.40	0.3	undecidable	manual	S	220	0.2131	91	-0.09	73
IV.TERO.HHZ.	2020-11-29T15:08:53.25	0.1	undecidable	manual	P	117	0.3112	90	-0.19	94
IV.SMA1.EHZ.	2020-11-29T15:08:53.40	0.6	undecidable	manual	S	150	0.1565	92	-0.4	46
IV.MF5.EHZ.	2020-11-29T15:08:53.31	0.1	undecidable	manual	P	37	0.2797	90	0.4	90
IV.MMO1.EHZ.	2020-11-29T15:08:53.40	0.6	undecidable	manual	S	28	0.152	92	-0.27	48
IV.CSP1.EHZ.	2020-11-29T15:08:53.64	0.1	undecidable	manual	P	357	0.3265	90	-0.07	97
IV.CESI.HHZ.	2020-11-29T15:08:53.81	0.1	undecidable	manual	P	315	0.3363	90	-0.08	96
IV.T1299.HNZ.	2020-11-29T15:08:53.50	0.6	undecidable	manual	S	163	0.1376	94	0.27	48
IV.MC2.EHZ.	2020-11-29T15:08:53.60	0.6	undecidable	manual	S	349	0.1484	93	0.03	50
IV.NRCA.HHZ.	2020-11-29T15:08:52.00	0.6	undecidable	manual	S	309	0.1079	110	-0.38	47
IV.MTRA.HNZ.	2020-11-29T15:08:52.40	0.6	undecidable	manual	S	94	0.1241	100	-0.44	47
IV.CAMP.HHZ.	2020-11-29T15:08:52.60	0.1	undecidable	manual	P	150	0.2653	91	-0.07	98
IT.MTCL.HGE.	2020-11-29T15:08:52.81	0.1	undecidable	manual	P	324	0.2833	90	-0.16	96
IV.LNSS.HHZ.	2020-11-29T15:08:51.84	0.1	undecidable	manual	P	220	0.2131	91	0.06	98
IV.MTRA.HNZ.	2020-11-29T15:08:50.29	0.1	undecidable	manual	P	94	0.1241	100	0.04	100
IV.T1299.HNZ.	2020-11-29T15:08:50.72	0.1	undecidable	manual	P	163	0.1376	94	0.24	96
IV.MC2.EHZ.	2020-11-29T15:08:50.77	0.1	undecidable	manual	P	349	0.1484	93	0.1	98
IV.NRCA.HHZ.	2020-11-29T15:08:50.04	0.1	undecidable	manual	P	309	0.1079	110	0.06	100
IV.SMA1.EHZ.	2020-11-29T15:08:50.98	0.1	undecidable	manual	P	150	0.1565	92	0.18	97
IV.MMO1.EHZ.	2020-11-29T15:08:50.66	0.1	undecidable	manual	P	28	0.152	92	-0.07	100

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.NRCA.HHE.	ML:0	0.0010154935	0.1408	AML	other	m	2020-11-29T15:08:52.61
IV.NRCA.HNN.	ML:0	0.001425	0.06	AML	other	m	2020-11-29T15:08:52.31
IV.NRCA.HNE.	ML:0	0.0009645	0.12	AML	other	m	2020-11-29T15:08:52.62
IV.NRCA.HHN.	ML:0	0.001515011	0.0768	AML	other	m	2020-11-29T15:08:52.31
IV.MTRA.HNE.	ML:0	0.0006815	0.38	AML	other	m	2020-11-29T15:08:52.75
IV.MTRA.EHN.	ML:0	0.00045437375	0.1792	AML	other	m	2020-11-29T15:08:53.22
IV.MTRA.HNN.	ML:0	0.000583	0.4	AML	other	m	2020-11-29T15:08:53.22
IV.MTRA.EHE.	ML:0	0.000621667	0.1024	AML	other	m	2020-11-29T15:08:52.76
IV.LNSS.HHN.	ML:0	0.0002495	0.32	AML	other	m	2020-11-29T15:08:56.20
IV.LNSS.HHE.	ML:0	0.0002387707	0.1152	AML	other	m	2020-11-29T15:08:56.88
IV.TERO.HHN.	ML:0	0.0001115	0.34	AML	other	m	2020-11-29T15:08:58.77
IV.TERO.HHE.	ML:0	0.000111	1.3	AML	other	m	2020-11-29T15:08:59.25
IV.MF5.EHE.	ML:0	0.0003265	0.42	AML	other	m	2020-11-29T15:09:04.75
IV.MF5.EHN.	ML:0	0.0002385	0.42	AML	other	m	2020-11-29T15:09:06.33
IV.SMA1.EHE.	ML:1.4	0.00017954435	0.0768	AML	other	m	2020-11-29T15:08:53.98
IV.SMA1.EHN.	ML:1.2	0.0001422374	0.1152	AML	other	m	2020-11-29T15:08:53.84
IV.LNSS.HNE.	ML:1.5	0.000204777705	0.1152	AML	other	m	2020-11-29T15:08:56.88
IV.LNSS.HNN.	ML:1.6	0.00021853145	0.128	AML	other	m	2020-11-29T15:08:56.20
IV.TERO.HNE.	ML:1.4	0.0001152121	0.1536	AML	other	m	2020-11-29T15:08:59.87
IV.TERO.HNN.	ML:1.4	9.688563E-5	0.5504	AML	other	m	2020-11-29T15:08:58.06
IV.CSP1.EHE.	ML:1.7	0.000186469	1.6	AML	other	m	2020-11-29T15:09:10.20
IV.CSP1.EHN.	ML:1.4	0.00010105648	0	AML	other	m	2020-11-29T15:08:58.96
IV.CESI.HHE.	ML:1.2	5.39797115E-5	0.1792	AML	other	m	2020-11-29T15:08:59.76

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Focal Mechanism 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 1.6 on date 29-11-2020 and time 16:08:46 (Italy) in region 6 km W Arquata del Tronto (AP)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

The earthquake effects in MCS scale as obtained from the compiled questionnaire

Origin

Uncertainty

Quality

ML:1.6