Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 07-09-2021 and time 02:02:41 (UTC) in region 4 km SW Lizzano in Belvedere (BO)

A magnitude ML 1.1 earthquake occured in region: 4 km SW Lizzano in Belvedere (BO), on

  • 07-09-2021 02:02:41 (UTC)
  • 07-09-2021 04:02:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1280, 10.8670 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Lizzano in Belvedere BO 5 2212 2212
Alto Reno Terme BO 9 6960 9172
Cutigliano PT 9 1488 10660
Gaggio Montano BO 10 4878 15538
San Marcello Pistoiese PT 10 6416 21954
Fanano MO 11 2989 24943
Sambuca Pistoiese PT 11 1626 26569
Piteglio PT 14 1683 28252
Sestola MO 14 2508 30760
Castel di Casio BO 14 3448 34208
Abetone PT 16 621 34829
Montese MO 17 3353 38182
Montecreto MO 18 940 39122
Camugnano BO 18 1885 41007
Fiumalbo MO 18 1280 42287

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Pistoia (90315 inhabitants)
33 Km NW of Prato (191150 inhabitants)
43 Km NE of Lucca (89046 inhabitants)
48 Km NW of Scandicci (50609 inhabitants)
51 Km NW of Firenze (382808 inhabitants)
56 Km SW of Bologna (386663 inhabitants)
57 Km NE of Viareggio (62467 inhabitants)
58 Km S of Modena (184973 inhabitants)
59 Km E of Massa (69479 inhabitants)
59 Km NE of Pisa (89158 inhabitants)
62 Km E of Carrara (63133 inhabitants)
66 Km S of Reggio nell'Emilia (171345 inhabitants)
72 Km W of Imola (69797 inhabitants)
73 Km S of Carpi (70699 inhabitants)
78 Km NE of Livorno (159219 inhabitants)
83 Km W of Faenza (58541 inhabitants)
83 Km E of La Spezia (93959 inhabitants)
86 Km SE of Parma (192836 inhabitants)
94 Km W of Forlì (117913 inhabitants)
97 Km NW of Siena (53903 inhabitants)
99 Km SW of Ferrara (133155 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.1 2021-09-07
02:02:41		 44.1275 10.8672 10 2022-03-30
13:04:40		 Bollettino Sismico Italiano INGV 101966941
Reviewed
Rev100 		ML 1.1 2021-09-07
02:02:41		 44.0965 10.8427 17 2021-09-07
02:06:33		 Sala Sismica INGV-Roma 95128981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-07 02:02:41 ± 0.13
Latitude 44.1275 ± 0.0081
Longitude 10.8672 ± 0.0088
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101966941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 887
Semi-minor axis of confidence ellipse (meter) 422
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 166
Circular confidence region, given by single value of horizontal uncertainty (meter) 890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 0.67899
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 101966941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-14 10:47:33

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95128981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-07 02:06:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.MAIM.HHZ. 2021-09-07T02:02:54.04 0.6 undecidable manual S 232 38.2284 50 -0.12 49
GU.GRAM.HHZ. 2021-09-07T02:02:54.66 0.3 undecidable manual P 303 75.369 50 0.2 67
IV.ZCCA.HHZ. 2021-09-07T02:02:53.06 0.6 undecidable manual S 19 26.2515 50 2.1 18
GU.CARD.HHZ. 2021-09-07T02:02:52.15 0.6 undecidable manual S 250 32.6451 50 -0.52 46
GU.GSCL.HHZ. 2021-09-07T02:02:52.31 0.6 undecidable manual S 318 33.2445 50 -0.51 45
IV.MOCL.EHZ. 2021-09-07T02:02:51.38 0.6 undecidable manual S 118 28.4493 50 -0.17 50
IV.PII.HHZ. 2021-09-07T02:02:51.10 0.6 undecidable manual P 211 52.6029 50 0.14 47
IV.MPPT.EHN. 2021-09-07T02:02:51.04 0.6 undecidable manual S 137 25.9518 50 0.17 48
IV.BDI.HHZ. 2021-09-07T02:02:49.48 0.6 undecidable manual S 252 22.755 114 -0.55 46
GU.MAIM.HHZ. 2021-09-07T02:02:49.38 0.3 undecidable manual P 232 38.2284 50 0.64 63
GU.SARM.EHN. 2021-09-07T02:02:48.65 0.3 undecidable manual P 280 37.629 50 0 75
GU.CARD.HHZ. 2021-09-07T02:02:48.42 0.3 undecidable manual P 250 32.6451 50 0.54 66
IV.FNVD.HHZ. 2021-09-07T02:02:48.91 0.6 undecidable manual S 78 20.868 116 -0.51 46
IV.MOCL.EHZ. 2021-09-07T02:02:47.07 0.3 undecidable manual P 118 28.4493 50 -0.16 74
GU.POPM.HHZ. 2021-09-07T02:02:47.29 0.6 undecidable manual S 224 12.6762 129 0.26 49
IV.ZCCA.HHZ. 2021-09-07T02:02:47.24 0.1 undecidable manual P 19 26.2515 50 0.35 95
GU.GSCL.HHZ. 2021-09-07T02:02:47.61 0.3 undecidable manual P 318 33.2445 50 -0.36 70
IV.MPPT.EHN. 2021-09-07T02:02:46.97 0.3 undecidable manual P 137 25.9518 50 0.13 74
IV.BDI.HHZ. 2021-09-07T02:02:45.96 0.1 undecidable manual P 252 22.755 114 -0.4 95
IV.FNVD.HHZ. 2021-09-07T02:02:45.67 0.1 undecidable manual P 78 20.868 116 -0.34 96
GU.POPM.HHZ. 2021-09-07T02:02:44.83 0.1 undecidable manual P 224 12.6762 129 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHN. ML:1.7 0.000588 0.18 AML other m 2021-09-07T02:02:47.42
GU.POPM.HHE. ML:1.5 0.0003655 0.14 AML other m 2021-09-07T02:02:47.91
IV.BDI.HHN. ML:1.3 0.000131 0.14 AML other m 2021-09-07T02:02:49.66
IV.BDI.HHE. ML:1.2 0.00010385 0.16 AML other m 2021-09-07T02:02:51.15
IV.ZCCA.HHN. ML:0.8 0.0000365 1.26 AML other m 2021-09-07T02:02:54.81
IV.ZCCA.HHE. ML:1.1 0.00007125000000000001 0.92 AML other m 2021-09-07T02:02:54.97
GU.MAIM.HHE. ML:0.7 0.0000201 0.62 AML other m 2021-09-07T02:02:55.72
GU.MAIM.HHN. ML:0.8 0.00002375 0.3 AML other m 2021-09-07T02:02:55.59
IV.PII.HHN. ML:1.0 0.00002715 0.96 AML other m 2021-09-07T02:02:58.13
IV.PII.HHE. ML:1.2 0.0000343 0.82 AML other m 2021-09-07T02:02:58.21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download