Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-09-2021 and time 01:52:55 (UTC) in region 4 km SW Lizzano in Belvedere (BO)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Lizzano in Belvedere (BO), on

  • 07-09-2021 01:52:55 (UTC)
  • 07-09-2021 03:52:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1340, 10.8640 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 4 2212 2212
Cutigliano PT 9 1488 3700
Alto Reno Terme BO 9 6960 10660
Gaggio Montano BO 9 4878 15538
Fanano MO 10 2989 18527
San Marcello Pistoiese PT 10 6416 24943
Sambuca Pistoiese PT 11 1626 26569
Sestola MO 13 2508 29077
Piteglio PT 14 1683 30760
Castel di Casio BO 14 3448 34208
Abetone PT 16 621 34829
Montese MO 16 3353 38182
Montecreto MO 17 940 39122
Fiumalbo MO 18 1280 40402
Camugnano BO 18 1885 42287
Castel d'Aiano BO 20 1906 44193
Riolunato MO 20 712 44905

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km N of Pistoia (90315 inhabitants)
34 Km NW of Prato (191150 inhabitants)
43 Km NE of Lucca (89046 inhabitants)
49 Km NW of Scandicci (50609 inhabitants)
51 Km NW of Firenze (382808 inhabitants)
55 Km SW of Bologna (386663 inhabitants)
57 Km NE of Viareggio (62467 inhabitants)
57 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)
65 Km S of Reggio nell'Emilia (171345 inhabitants)
72 Km W of Imola (69797 inhabitants)
72 Km S of Carpi (70699 inhabitants)
78 Km NE of Livorno (159219 inhabitants)
83 Km E of La Spezia (93959 inhabitants)
83 Km W of Faenza (58541 inhabitants)
86 Km SE of Parma (192836 inhabitants)
95 Km W of Forlì (117913 inhabitants)
98 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 1.4 2021-09-07
01:52:55		 44.1338 10.8637 10 2022-03-30
13:04:08		 Bollettino Sismico Italiano INGV 96092871
Reviewed
Rev100 		ML 1.5 2021-09-07
01:52:56		 44.0987 10.8472 16 2021-09-07
01:56:51		 Sala Sismica INGV-Roma 95128391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-07 01:52:55 ± 0.09
Latitude 44.1338 ± 0.0063
Longitude 10.8637 ± 0.0050
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 96092871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 699
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.11781
Epicentral distance of station farthest from the epicenter (degree) 0.47844
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 95128391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-07 01:56:51

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 96092871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-14 10:42:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GSCL.HHZ. 2021-09-07T01:53:07.12 0.6 undecidable manual S 318 32.5452 50 -0.05 49
IV.MOCL.EHZ. 2021-09-07T01:53:06.12 0.6 undecidable manual S 119 29.0487 50 -0.12 49
GU.CARD.HHZ. 2021-09-07T01:53:06.75 0.3 undecidable manual S 249 32.6451 50 -0.46 68
IV.PII.HHZ. 2021-09-07T01:53:05.39 0.3 undecidable manual P 211 53.1024 50 -0.17 70
IV.MPPT.EHZ. 2021-09-07T01:53:05.62 0.6 undecidable manual S 137 26.6511 50 0.03 50
IV.BDI.HHZ. 2021-09-07T01:53:04.20 0.6 undecidable manual S 250 22.755 114 -0.34 47
IV.FNVD.HHZ. 2021-09-07T01:53:03.63 0.3 undecidable manual S 80 20.9679 116 -0.34 71
IV.CRMI.HHZ. 2021-09-07T01:53:03.84 0.3 undecidable manual P 166 38.628 50 0.51 66
IV.SEI.HHZ. 2021-09-07T01:53:03.44 0.1 undecidable manual P 102 40.4262 50 -0.16 95
GU.MAIM.HHZ. 2021-09-07T01:53:03.69 0.3 undecidable manual P 231 38.5281 50 0.38 68
GU.SARM.EHN. 2021-09-07T01:53:03.10 0.1 undecidable manual P 279 37.2294 50 -0.02 99
GU.GSCL.HHZ. 2021-09-07T01:53:02.32 0.3 undecidable manual P 318 32.5452 50 -0.07 74
GU.CARD.HHZ. 2021-09-07T01:53:02.20 0.3 undecidable manual P 249 32.6451 50 -0.21 72
IV.MOCL.EHZ. 2021-09-07T01:53:01.83 0.1 positive manual P 119 29.0487 50 -0.02 100
GU.POPM.HHZ. 2021-09-07T01:53:01.89 0.3 undecidable manual S 221 13.0758 128 0.26 73
IV.MPPT.EHZ. 2021-09-07T01:53:01.42 0.3 undecidable manual P 137 26.6511 50 -0.06 75
IV.ZCCA.HHZ. 2021-09-07T01:53:01.99 0.1 positive manual P 20 25.6521 50 0.66 86
IV.BDI.HHZ. 2021-09-07T01:53:00.70 0.1 positive manual P 250 22.755 114 -0.17 98
IV.FNVD.HHZ. 2021-09-07T01:53:00.34 0.3 undecidable manual P 80 20.9679 116 -0.2 73
GU.POPM.HHZ. 2021-09-07T01:52:59.51 0.1 undecidable manual P 221 13.0758 128 0.32 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHN. ML:2.1 0.0013 0.18 AML other m 2021-09-07T01:53:02.16
GU.POPM.HHE. ML:1.9 0.000877 0.1 AML other m 2021-09-07T01:53:02.53
IV.BDI.HHN. ML:1.7 0.000356 0.14 AML other m 2021-09-07T01:53:04.39
IV.BDI.HNN. ML:1.7 0.000322 0.64 AML other m 2021-09-07T01:53:05.32
IV.BDI.HHE. ML:1.5 0.0002045 1.08 AML other m 2021-09-07T01:53:05.62
IV.BDI.HNE. ML:1.5 0.000216 1.6 AML other m 2021-09-07T01:53:06.03
IV.MPPT.EHN. ML:0.9 0.000046899999999999995 0.3 AML other m 2021-09-07T01:53:06.22
IV.MPPT.EHE. ML:0.9 0.00004375 0.48 AML other m 2021-09-07T01:53:06.52
GU.CARD.HHE. ML:1.5 0.0001235 0.72 AML other m 2021-09-07T01:53:07.34
GU.CARD.HHN. ML:1.6 0.000157 0.62 AML other m 2021-09-07T01:53:07.40
IV.ZCCA.HHE. ML:1.4 0.0001525 0.26 AML other m 2021-09-07T01:53:08.70
IV.ZCCA.HHN. ML:1.2 0.00009245000000000001 0.74 AML other m 2021-09-07T01:53:08.91
GU.MAIM.HHE. ML:1.1 0.00004555 0.24 AML other m 2021-09-07T01:53:09.08
GU.MAIM.HHN. ML:1.1 0.000046649999999999996 0.56 AML other m 2021-09-07T01:53:09.37
IV.PII.HHE. ML:1.4 0.00006659999999999999 1.74 AML other m 2021-09-07T01:53:12.95
IV.PII.HHN. ML:1.4 0.0000586 0.28 AML other m 2021-09-07T01:53:13.86
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