Earthquake Costa Ligure centro-occidentale (Savona), Magnitude ML 1.3, 22 August 2019 time 09:01:10 (Timezone UTC)

A magnitude ML 1.3 (quarry blast) earthquake occured in region: Costa Ligure centro occidentale (Savona), on

22-08-2019 09:01:10 (UTC)
22-08-2019 11:01:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9380, 8.1730 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
Andora	SV	4	7552	7552
Laigueglia	SV	4	1810	9362
Cervo	IM	5	1187	10549
San Bartolomeo al Mare	IM	6	3129	13678
Villa Faraldi	IM	7	444	14122
Diano Marina	IM	8	5977	20099
Alassio	SV	8	10934	31033
Diano San Pietro	IM	8	1145	32178
Diano Castello	IM	9	2214	34392
Diano Arentino	IM	10	722	35114
Stellanello	SV	11	808	35922
Villanova d'Albenga	SV	12	2657	38579
Garlenda	SV	12	1254	39833
Pontedassio	IM	13	2323	42156
Albenga	SV	13	24213	66369
Imperia	IM	13	42034	108403
Testico	SV	14	196	108599
Casanova Lerrone	SV	14	749	109348
Ortovero	SV	15	1586	110934
Chiusanico	IM	15	607	111541
Chiusavecchia	IM	16	577	112118
Arnasco	SV	17	645	112763
Cisano sul Neva	SV	17	2085	114848
Vendone	SV	17	388	115236
Lucinasco	IM	17	272	115508
Vasia	IM	17	389	115897
Cesio	IM	18	283	116180
Onzo	SV	18	219	116399
Dolcedo	IM	18	1415	117814
Caravonica	IM	18	282	118096
Ceriale	SV	18	5561	123657
Ranzo	IM	19	557	124214
Borgomaro	IM	19	865	125079
Civezza	IM	19	609	125688
Prelà	IM	19	503	126191
San Lorenzo al Mare	IM	19	1297	127488
Zuccarello	SV	20	309	127797

Municipalities with at least 50000 inhabitants

An earthquake occurred to

34 Km E of Sanremo (54807 inhabitants)

48 Km SW of Savona (61345 inhabitants)

71 Km SE of Cuneo (56081 inhabitants)

80 Km SW of Genova (586655 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 1.3	2019-08-22 09:01:10	43.9378	8.1728	1	2019-11-13 14:31:07	Bollettino Sismico Italiano INGV	73292831
Reviewed Rev100	ML 1.3	2019-08-22 09:01:12	44.0853	8.1682	11	2019-08-22 09:14:02	Sala Sismica INGV-Roma	71695381

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2019-08-22 09:01:10 ± 0.59
Latitude	43.9378 ± 0.0270
Longitude	8.1728 ± 0.0375
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	73292831

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	4080
Semi-minor axis of confidence ellipse (meter)	1190
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	315
Circular confidence region, given by single value of horizontal uncertainty (meter)	4080.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	233
Number of associated phases, regardless of their use for origin computation	21
Number of defining phases	9
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.4
Epicentral distance of station closest to the epicenter (degree)	0.00000
Epicentral distance of station farthest from the epicenter (degree)	0.68079
Number of stations at which the event was observed	21
Number of stations from which data was used for origin computation	9

Magnitudes information

ML:1.3

Field	Value
Value	1.3
Uncertainty	0.5
Num. used stations	8
Type of magnitude	ML
Reference to an origin	71695381
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2019-08-22 09:14:02

ML:1.3

Field	Value
Value	1.3
Uncertainty	0.2
Num. used stations	6
Type of magnitude	ML
Reference to an origin	73292831
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2019-10-16 21:24:08

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
IV.MCRV.HHZ.	2019-08-22T09:03:05.43	3.0	undecidable	manual	Pg				19.870001	0
IV.SGTA.HNZ.	2019-08-22T09:03:03.02	3.0	negative	manual	Pg				18.35	0
IT.VNF1.HGZ.	2019-08-22T09:02:35.83	3.0	positive	manual	Pn				5.27	0
TV.SF04.EHZ.	2019-08-22T09:02:33.65	3.0	undecidable	manual	Sn				-3	0
IV.CERA.HHZ.	2019-08-22T09:02:32.17	3.0	negative	manual	Pn				2.74	0
OX.MPRI.HHZ.	2019-08-22T09:02:26.36	3.0	negative	manual	Pg				9.46	0
IV.MAGA.HHZ.	2019-08-22T09:01:58.07	3.0	negative	manual	Pg				3.19	0
IV.TREG.HNZ.	2019-08-22T09:01:55.16	3.0	undecidable	manual	Pn				-1.64	0
IV.BOB.HHZ.	2019-08-22T09:01:53.02	3.0	undecidable	manual	S				-2.88	0
IV.OSSC.HHZ.	2019-08-22T09:01:52.43	3.0	negative	manual	Pn				-0.45	0
IV.NDIM.HNZ.	2019-08-22T09:01:51.23	3.0	undecidable	manual	Pn				0.71	0
MN.BNI.HHZ.	2019-08-22T09:01:42.25	3.0	undecidable	manual	Pg				1.89	0
GU.STV.HHZ.	2019-08-22T09:01:24.80	0.1	undecidable	manual	P	297	75.5688	50	-0.3	89
GU.ENR.HHN.	2019-08-22T09:01:23.22	0.3	undecidable	manual	P	298	67.9764	50	-0.71	60
GU.BURY.HNN.	2019-08-22T09:01:21.45	0.3	undecidable	manual	P	251	52.2033	91	0.32	70
FR.SAOF.HHZ.00	2019-08-22T09:01:20.49	0.3	undecidable	manual	P	276	49.8168	91	-0.16	72
GU.GBOS.HHZ.	2019-08-22T09:01:19.08	0.1	undecidable	manual	P	322	42.9237	91	-0.19	97
IV.QLNO.HHE.	2019-08-22T09:01:19.41	0.1	undecidable	manual	P	18	45.0216	91	-0.29	95
GU.CANO.HHZ.	2019-08-22T09:01:17.02	0.1	undecidable	manual	P	10	30.3474	91	0.26	98
GU.RORO.HHZ.	2019-08-22T09:01:15.54	0.1	undecidable	manual	P	336	21.1677	91	0.63	90
IV.IMI.HHN.	2019-08-22T09:01:15.42	0.1	undecidable	manual	P	262	22.5552	91	0.22	100

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
GU.CANO.HHN.	ML:1.6	0.0001995	0.8	AML	other	m	2019-08-22T09:01:18.95
GU.CANO.HHE.	ML:1.5	0.00016749999999999998	0.78	AML	other	m	2019-08-22T09:01:18.78
GU.STV.HHN.	ML:1.1	0.0000189	0.6	AML	other	m	2019-08-22T09:01:28.05
GU.STV.HHE.	ML:1.1	0.00001845	0.86	AML	other	m	2019-08-22T09:01:28.12
FR.SAOF.HHE.00	ML:1.2	0.00004045	0.56	AML	other	m	2019-08-22T09:01:31.46
FR.SAOF.HHN.00	ML:1.2	0.0000407	0.54	AML	other	m	2019-08-22T09:01:32.01

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 1.3 on date 22-08-2019 and time 09:01:10 (UTC) in region Costa Ligure centro occidentale (Savona)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.3

ML:1.3