Earthquake 3 km S Belforte Monferrato (AL), Magnitude ML 1.1, 22 February 2020 time 03:45:34 (Timezone UTC)

A magnitude ML 1.1 earthquake occured in region: 3 km S Belforte Monferrato (AL), on

22-02-2020 03:45:34 (UTC)
22-02-2020 04:45:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.6000, 8.6550 at 10 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
Belforte Monferrato	AL	3	515	515
Ovada	AL	4	11477	11992
Rossiglione	GE	4	2779	14771
Tagliolo Monferrato	AL	5	1581	16352
Molare	AL	5	2181	18533
Lerma	AL	6	869	19402
Cremolino	AL	7	1086	20488
Casaleggio Boiro	AL	7	372	20860
Cassinelle	AL	8	914	21774
Campo Ligure	GE	8	2955	24729
Rocca Grimalda	AL	8	1512	26241
Tiglieto	GE	9	546	26787
Trisobbio	AL	9	655	27442
Mornese	AL	9	737	28179
Prasco	AL	9	521	28700
Carpeneto	AL	10	977	29677
Montaldeo	AL	10	265	29942
Silvano d'Orba	AL	10	1988	31930
Castelletto d'Orba	AL	10	2047	33977
Montaldo Bormida	AL	11	664	34641
Morsasco	AL	11	679	35320
Morbello	AL	11	402	35722
Parodi Ligure	AL	12	715	36437
Masone	GE	12	3679	40116
Bosio	AL	12	1227	41343
Orsara Bormida	AL	12	424	41767
San Cristoforo	AL	13	608	42375
Grognardo	AL	13	259	42634
Urbe	SV	13	700	43334
Visone	AL	14	1194	44528
Capriata d'Orba	AL	15	1904	46432
Rivalta Bormida	AL	15	1446	47878
Voltaggio	AL	15	738	48616
Strevi	AL	15	2019	50635
Gavi	AL	15	4614	55249
Ponzone	AL	16	1051	56300
Carrosio	AL	16	510	56810
Cavatore	AL	16	291	57101
Francavilla Bisio	AL	16	531	57632
Tassarolo	AL	17	672	58304
Acqui Terme	AL	17	19896	78200
Predosa	AL	17	2048	80248
Fraconalto	AL	18	336	80584
Castelnuovo Bormida	AL	18	694	81278
Pasturana	AL	18	1318	82596
Cartosio	AL	19	747	83343
Sassello	SV	19	1777	85120
Melazzo	AL	19	1325	86445
Mele	GE	19	2725	89170
Basaluzzo	AL	19	2087	91257
Cassine	AL	19	2961	94218
Malvicino	AL	20	85	94303

Municipalities with at least 50000 inhabitants

An earthquake occurred to

30 Km NW of Genova (586655 inhabitants)

35 Km S of Alessandria (93943 inhabitants)

35 Km NE of Savona (61345 inhabitants)

49 Km SE of Asti (76202 inhabitants)

76 Km SW of Pavia (72576 inhabitants)

82 Km S of Vigevano (63310 inhabitants)

89 Km SE of Moncalieri (57294 inhabitants)

90 Km E of Cuneo (56081 inhabitants)

93 Km SE of Torino (890529 inhabitants)

94 Km S of Novara (104380 inhabitants)

96 Km SW of Piacenza (102191 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 1.1	2020-02-22 03:45:34	44.6003	8.6553	10	2020-02-22 03:50:58	Sala Sismica INGV-Roma	76710741

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2020-02-22 03:45:34 ± 0.16
Latitude	44.6003 ± 0.0072
Longitude	8.6553 ± 0.0114
Depth (km)	10 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	100 -> SURVEY-INGV
Event type	earthquake
Origin ID	76710741

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	961
Semi-minor axis of confidence ellipse (meter)	704
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	247
Circular confidence region, given by single value of horizontal uncertainty (meter)	960.0
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	162
Number of associated phases, regardless of their use for origin computation	12
Number of defining phases	12
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.31
Epicentral distance of station closest to the epicenter (degree)	0.09803
Epicentral distance of station farthest from the epicenter (degree)	0.49373
Number of stations at which the event was observed	6
Number of stations from which data was used for origin computation	6

Magnitude information

ML:1.1

Field	Value
Value	1.1
Uncertainty	0.4
Num. used stations	10
Type of magnitude	ML
Reference to an origin	76710741
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2020-02-22 03:50:58

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Takeoff_angle	Residual	Weight
GU.CANO.HHZ.	2020-02-22T03:45:51.56	0.6	undecidable	manual	S	217	54.8007	50	-0.22	47
GU.ROTM.HHZ.	2020-02-22T03:45:47.16	0.3	undecidable	manual	S	319	36.5412	50	0.26	73
IV.QLNO.HHZ.	2020-02-22T03:45:47.21	0.3	undecidable	manual	S	219	39.2274	50	-0.43	70
GU.RNCA.HHZ.	2020-02-22T03:45:44.26	0.3	undecidable	manual	S	121	27.4503	50	-0.22	74
GU.CANO.HHZ.	2020-02-22T03:45:44.75	0.1	undecidable	manual	P	217	54.8007	50	0.29	93
IV.QLNO.HHZ.	2020-02-22T03:45:42.23	0.3	undecidable	manual	P	219	39.2274	50	0.16	74
GU.ROTM.HHZ.	2020-02-22T03:45:41.86	0.1	undecidable	manual	P	319	36.5412	50	0.22	98
IT.ACQ.HGZ.	2020-02-22T03:45:40.86	0.3	undecidable	manual	S	301	17.7711	119	-0.67	67
GU.RNCA.HHZ.	2020-02-22T03:45:40.14	0.3	undecidable	manual	P	121	27.4503	50	-0.11	76
GU.PCP.HHZ.	2020-02-22T03:45:39.75	0.3	undecidable	manual	S	233	10.878	132	0.16	78
IT.ACQ.HGZ.	2020-02-22T03:45:38.37	0.3	undecidable	manual	P	301	17.7711	119	-0.17	76
GU.PCP.HHZ.	2020-02-22T03:45:37.74	0.1	undecidable	manual	P	233	10.878	132	0.32	100

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
GU.PCP.HHE.	ML:1.0	0.00012931934	0.08	AML	other	m	2020-02-22T03:45:40.35
GU.PCP.HHN.	ML:1.3	0.0002202185	0.08	AML	other	m	2020-02-22T03:45:40.07
GU.RNCA.HHE.	ML:0.7	0.000022737785000000003	0.16	AML	other	m	2020-02-22T03:45:45.44
GU.RNCA.HHN.	ML:0.9	0.00004584163	0.2016	AML	other	m	2020-02-22T03:45:44.51
GU.ROTM.HHE.	ML:1.7	0.00019766975	0.16	AML	other	m	2020-02-22T03:45:47.47
GU.ROTM.HHN.	ML:1.8	0.00026548235	0.2208	AML	other	m	2020-02-22T03:45:47.26
IV.QLNO.HHE.	ML:0.8	0.0000221326835	0.1408	AML	other	m	2020-02-22T03:45:47.53
IV.QLNO.HHN.	ML:0.6	0.000016906984999999998	0.1792	AML	other	m	2020-02-22T03:45:48.51
GU.CANO.HHE.	ML:1.1	0.000031010767	0.16	AML	other	m	2020-02-22T03:45:52.79
GU.CANO.HHN.	ML:1.4	0.0000584698	0.2592	AML	other	m	2020-02-22T03:45:52.55

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 1.1 on date 22-02-2020 and time 03:45:34 (UTC) in region 3 km S Belforte Monferrato (AL)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

ML:1.1