Earthquake 6 km N Trevi (PG), Magnitude ML 1.1, 24 October 2018 time 13:54:03 (Timezone Italy)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 6 km N Trevi (PG), on

24-10-2018 11:54:03 (UTC)
24-10-2018 13:54:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9270, 12.7680 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
Trevi	PG	6	8469	8469
Foligno	PG	6	57155	65624
Montefalco	PG	10	5679	71303
Spello	PG	11	8645	79948
Campello sul Clitunno	PG	12	2442	82390
Bevagna	PG	13	5081	87471
Sellano	PG	14	1079	88550
Castel Ritaldi	PG	14	3278	91828
Valtopina	PG	15	1398	93226
Cannara	PG	17	4305	97531
Cerreto di Spoleto	PG	17	1075	98606
Gualdo Cattaneo	PG	17	6155	104761
Giano dell'Umbria	PG	19	3846	108607
Vallo di Nera	PG	19	364	108971

Municipalities with at least 50000 inhabitants

An earthquake occurred to

6 Km SE of Foligno (57155 inhabitants)

37 Km SE of Perugia (166134 inhabitants)

42 Km N of Terni (111501 inhabitants)

78 Km NE of Viterbo (67173 inhabitants)

82 Km W of Teramo (54892 inhabitants)

82 Km NW of L'Aquila (69753 inhabitants)

94 Km SE of Arezzo (99543 inhabitants)

98 Km SW of Ancona (100861 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 1.1	2018-10-24 11:54:03	42.9268	12.7678	1	2019-06-04 09:16:13	Bollettino Sismico Italiano INGV	67923721
Reviewed Rev100	ML 1.3	2018-10-24 11:54:02	43.0838	12.685	26	2018-10-24 12:25:49	Sala Sismica INGV-Roma	62279071

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2018-10-24 11:54:03 ± 0.14
Latitude	42.9268 ± 0.0090
Longitude	12.7678 ± 0.0111
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	67923721

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	1050
Semi-minor axis of confidence ellipse (meter)	910
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	342
Circular confidence region, given by single value of horizontal uncertainty (meter)	1050.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	95
Number of associated phases, regardless of their use for origin computation	33
Number of defining phases	9
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.32
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.37951
Number of stations at which the event was observed	29
Number of stations from which data was used for origin computation	9

Magnitudes information

ML:1.1

Field	Value
Value	1.1
Uncertainty	0.1
Num. used stations	6
Type of magnitude	ML
Reference to an origin	67923721
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2019-04-24 14:26:54

ML:1.3

Field	Value
Value	1.3
Uncertainty	0.1
Num. used stations	6
Type of magnitude	ML
Reference to an origin	62279071
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2018-10-24 12:25:49

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.VBKN.HHZ.	2018-10-24T11:55:41.00	3.0	undecidable	manual	Sg				13.95	0
IV.CRJA.HHZ.	2018-10-24T11:55:39.32	3.0	undecidable	manual	Pg				20.48	0
IV.TDS.HHZ.	2018-10-24T11:55:27.59	3.0	undecidable	manual	Pg				19.57	0
IV.CPOZ.HHZ.	2018-10-24T11:55:20.71	3.0	undecidable	manual	Sn				-3.82	0
GU.ENR.HHZ.	2018-10-24T11:55:13.83	3.0	undecidable	manual	Sn				1.2	0
IV.LAV9.HNZ.	2018-10-24T11:55:07.04	3.0	undecidable	manual	Sg				11.42	0
ST.CARE.EHZ.	2018-10-24T11:55:07.51	3.0	undecidable	manual	Sg				12.43	0
OX.MPRI.HHZ.	2018-10-24T11:54:54.22	3.0	undecidable	manual	Sn				3.41	0
IV.CPOZ.HHZ.	2018-10-24T11:54:49.48	3.0	negative	manual	Pg				7.27	0
IV.EUCT.HNZ.	2018-10-24T11:54:48.17	3.0	undecidable	manual	Sn				-1.08	0
IV.EUCT.HNZ.	2018-10-24T11:54:34.77	3.0	undecidable	manual	Pg				12.38	0
IV.MBAL.EHZ.	2018-10-24T11:54:32.89	3.0	undecidable	manual	Sn				-4.64	0
GU.ROTM.HHZ.	2018-10-24T11:54:29.32	3.0	negative	manual	Pn				1.69	0
ST.RONC.EHZ.	2018-10-24T11:54:27.18	3.0	negative	manual	Pg				6.9	0
RF.GEPF.HHZ.	2018-10-24T11:54:24.18	3.0	positive	manual	Pn				-0.06	0
OX.ZOU2.HHZ.	2018-10-24T11:54:24.42	3.0	positive	manual	Pn				-2.9	0
IV.MBAL.EHZ.	2018-10-24T11:54:21.09	3.0	negative	manual	Pg				5.28	0
CR.BRJN.HHZ.	2018-10-24T11:54:21.79	3.0	undecidable	manual	Pg				8.24	0
OX.MPRI.HHZ.	2018-10-24T11:54:19.94	3.0	negative	manual	Pn				-3.33	0
IV.CNCS.HNZ.	2018-10-24T11:54:18.94	3.0	positive	manual	Pn				1.01	0
IV.CSNT.HHZ.	2018-10-24T11:54:15.92	3.0	undecidable	manual	Sg				3.16	0
IV.BRSN.EHZ.	2018-10-24T11:54:13.22	3.0	undecidable	manual	P					0
IV.MURB.HNZ.	2018-10-24T11:54:11.82	0.6	undecidable	manual	P	332	42.1245	91	-0.43	45
IV.MC2.EHZ.	2018-10-24T11:54:10.20	0.3	undecidable	manual	P	93	34.2435	91	-0.47	67
IV.RIBO.EHZ.01	2018-10-24T11:54:10.66	3.0	positive	manual	P				1.3	0
IV.MML1.HNE.	2018-10-24T11:54:09.08	0.3	undecidable	manual	P	39	26.4513	91	-0.04	75
IV.GAVE.EHN.	2018-10-24T11:54:09.77	0.6	undecidable	manual	P	158	27.9498	91	0.36	47
IV.NRCA.HHZ.	2018-10-24T11:54:09.49	0.3	undecidable	manual	P	110	30.0477	91	-0.33	70
IV.FDMO.HHZ.	2018-10-24T11:54:09.76	0.3	undecidable	manual	P	65	28.6491	91	0.22	72
IV.MOMA.HNZ.	2018-10-24T11:54:08.10	0.1	undecidable	manual	P	230	21.0678	91	0.07	100
IV.CESI.HHZ.	2018-10-24T11:54:07.20	0.3	undecidable	manual	P	52	14.0748	92	0.57	67
IV.SBPO.HNZ.	2018-10-24T11:54:07.24	3.0	negative	manual	Pn				-0.52	0
IV.ASSB.HHZ.	2018-10-24T11:54:06.92	0.3	undecidable	manual	P	325	15.5733	92	-0.01	77

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.ASSB.HHE.	ML:0.9	0.00009035892	0.2624	AML	other	m	2018-10-24T11:54:10.63
IV.CESI.HHN.	ML:1.1	0.00015949999999999997	0.32	AML	other	m	2018-10-24T11:54:12.35
IV.ASSB.HHN.	ML:1.1	0.00014150000000000002	0.74	AML	other	m	2018-10-24T11:54:13.06
IV.CESI.HHE.	ML:1.2	0.000178	1.16	AML	other	m	2018-10-24T11:54:14.72
IV.FDMO.HHN.	ML:1.0	0.00006165	1.08	AML	other	m	2018-10-24T11:54:15.95
IV.FDMO.HHE.	ML:1.0	0.000061	1.62	AML	other	m	2018-10-24T11:54:16.09

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 1.1 on date 24-10-2018 and time 13:54:03 (Italy) in region 6 km N Trevi (PG)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.1

ML:1.3