Earthquake 3 km SE Accumoli (RI), Magnitude ML 1.0, 20 April 2019 time 20:30:12 (Timezone Italy)

A magnitude ML 1.0 earthquake occured in region: 3 km SE Accumoli (RI), on

20-04-2019 18:30:12 (UTC)
20-04-2019 20:30:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6730, 13.2700 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.

Did you feel it? Fill in the questionnaire.

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
Accumoli	RI	3	667	667
Amatrice	RI	5	2657	3324
Cittareale	RI	11	482	3806
Arquata del Tronto	AP	12	1178	4984
Campotosto	AQ	15	542	5526
Acquasanta Terme	AP	16	2916	8442
Montereale	AQ	17	2581	11023
Capitignano	AQ	17	665	11688
Norcia	PG	20	4957	16645
Montegallo	AP	20	523	17168

Municipalities with at least 50000 inhabitants

An earthquake occurred to

36 Km W of Teramo (54892 inhabitants)

37 Km N of L'Aquila (69753 inhabitants)

52 Km E of Terni (111501 inhabitants)

56 Km SE of Foligno (57155 inhabitants)

74 Km W of Montesilvano (53738 inhabitants)

81 Km W of Pescara (121014 inhabitants)

82 Km W of Chieti (51815 inhabitants)

87 Km SE of Perugia (166134 inhabitants)

87 Km NE of Guidonia Montecelio (88673 inhabitants)

88 Km NE of Tivoli (56533 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

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
Reviewed Rev100	ML 1.0	2019-04-20 18:30:12	42.6727	13.2697	11	2019-04-20 18:42:15	Sala Sismica INGV-Roma	67793211

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2019-04-20 18:30:12 ± 0.06
Latitude	42.6727 ± 0.0027
Longitude	13.2697 ± 0.0049
Depth (km)	11 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	100 -> SURVEY-INGV
Event type	earthquake
Origin ID	67793211

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	367
Semi-minor axis of confidence ellipse (meter)	141
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	258
Circular confidence region, given by single value of horizontal uncertainty (meter)	370.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	77
Number of associated phases, regardless of their use for origin computation	33
Number of defining phases	18
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.13
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.42178
Number of stations at which the event was observed	26
Number of stations from which data was used for origin computation	12

Magnitude information

ML:1.0

Field	Value
Value	1.0
Uncertainty	0.3
Num. used stations	12
Type of magnitude	ML
Reference to an origin	67793211
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2019-04-20 18:42:15

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
OX.MPRI.HHZ.	2019-04-20T18:31:47.47	3.0	undecidable	manual	Sn				-2.41	0
GU.RNCA.HHZ.	2019-04-20T18:31:46.27	3.0	undecidable	manual	Sn				-0.26	0
GU.GSCL.HHZ.	2019-04-20T18:31:46.44	3.0	undecidable	manual	Sg				22.620001	0
IV.SBPO.HNZ.	2019-04-20T18:31:34.85	3.0	undecidable	manual	Sn				1.26	0
IV.SARZ.HHZ.	2019-04-20T18:31:13.59	3.0	positive	manual	Pg				12.16	0
IV.ORI.HHZ.	2019-04-20T18:30:48.58	3.0	undecidable	manual	Pg				6.74	0
IV.OVO.HHZ.	2019-04-20T18:30:46.37	3.0	undecidable	manual	Sg				3.74	0
IV.VITU.HHZ.	2019-04-20T18:30:38.62	3.0	undecidable	manual	Sn				-0.99	0
IV.VIVA.HHZ.	2019-04-20T18:30:33.30	3.0	undecidable	manual	Sn				2.52	0
IV.GATE.HHZ.	2019-04-20T18:30:25.51	3.0	positive	manual	Pg				5.2	0
IV.MMO1.EHZ.	2019-04-20T18:30:22.14	0.3	undecidable	manual	S	10	25.5522	92	0.05	73
IV.CSP1.EHZ.	2019-04-20T18:30:21.44	0.6	undecidable	manual	P	354	46.8198	91	-0.01	48
IV.FDMO.HHZ.	2019-04-20T18:30:21.20	0.3	undecidable	manual	P	340	43.0236	91	0.34	67
IV.RM33.EHZ.	2019-04-20T18:30:20.14	0.6	undecidable	manual	S	194	18.6702	94	-0.13	49
IV.MF5.EHZ.	2019-04-20T18:30:20.73	3.0	positive	manual	Pn				1.63	0
IV.NRCA.HHZ.	2019-04-20T18:30:20.89	0.3	undecidable	manual	S	325	21.867	92	-0.22	72
IV.GIGS.HHZ.	2019-04-20T18:30:19.70	0.3	undecidable	manual	P	134	34.743	91	0.12	72
IV.MTRA.EHZ.	2019-04-20T18:30:18.77	0.3	undecidable	manual	S	48	13.875	104	-0.23	73
IV.MMO1.EHZ.	2019-04-20T18:30:18.26	0.3	undecidable	manual	P	10	25.5522	92	0.09	73
IV.TERO.HHZ.	2019-04-20T18:30:18.36	0.3	undecidable	manual	P	101	27.8499	91	-0.16	72
IV.LNSS.HHE.	2019-04-20T18:30:17.31	0.1	undecidable	manual	P	248	20.2686	93	-0.04	99
IV.CAMP.HHE.	2019-04-20T18:30:17.11	0.1	undecidable	manual	P	143	18.9699	94	-0.05	99
IV.SMA1.EHZ.	2019-04-20T18:30:17.36	0.3	undecidable	manual	S	131	7.0929	137	-0.09	75
IV.RM33.EHZ.	2019-04-20T18:30:17.07	1.0	undecidable	manual	P	194	18.6702	94	-0.05	25
IV.NRCA.HHZ.	2019-04-20T18:30:17.60	0.1	undecidable	manual	P	325	21.867	92	0	100
IV.MTRA.EHZ.	2019-04-20T18:30:16.43	0.3	undecidable	manual	P	48	13.875	104	0.05	75
IV.T1299.EHE.	2019-04-20T18:30:16.97	0.6	undecidable	manual	S	167	4.3956	153	-0.06	51
IV.SMA1.EHZ.	2019-04-20T18:30:15.64	0.3	undecidable	manual	P	131	7.0929	137	0.15	75
IV.VIVA.HHZ.	2019-04-20T18:30:15.09	3.0	undecidable	manual	P				-0.25	0
IV.LPEL.HHZ.	2019-04-20T18:30:15.37	3.0	undecidable	manual	P				0.26	0
IV.T1299.EHE.	2019-04-20T18:30:15.44	0.1	undecidable	manual	P	167	4.3956	153	0.19	99
IV.PTRJ.HHZ.	2019-04-20T18:30:14.58	3.0	undecidable	manual	Pn				-4.03	0
IT.VNF1.HGZ.	2019-04-20T18:30:13.55	3.0	negative	manual	P				-2.24	0

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.SMA1.EHE.	ML:1.2	0.0002	0.24	AML	other	m	2019-04-20T18:30:17.83
IV.SMA1.EHN.	ML:1.0	0.0001375	1.68	AML	other	m	2019-04-20T18:30:18.93
IV.MTRA.EHE.	ML:1.3	0.0001815	0.14	AML	other	m	2019-04-20T18:30:18.91
IV.MTRA.EHN.	ML:1.2	0.000156	0.14	AML	other	m	2019-04-20T18:30:18.90
IV.RM33.EHN.	ML:0.8	0.00004675	0.1	AML	other	m	2019-04-20T18:30:20.75
IV.RM33.EHE.	ML:0.8	0.000045249999999999995	0.42	AML	other	m	2019-04-20T18:30:20.59
IV.NRCA.HHN.	ML:1.3	0.000121	1.68	AML	other	m	2019-04-20T18:30:21.15
IV.NRCA.HHE.	ML:1.4	0.0001715	0.1	AML	other	m	2019-04-20T18:30:21.41
IV.TERO.HHN.	ML:0.8	0.00003175	0.2	AML	other	m	2019-04-20T18:30:23.37
IV.TERO.HHE.	ML:0.7	0.000023449999999999997	0.1	AML	other	m	2019-04-20T18:30:23.93
IV.FDMO.HHN.	ML:0.8	0.00001795	1.48	AML	other	m	2019-04-20T18:30:28.86
IV.FDMO.HHE.	ML:0.5	0.00001235	0.44	AML	other	m	2019-04-20T18:30:30.32

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 20-04-2019 and time 20:30:12 (Italy) in region 3 km SE Accumoli (RI)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.0