Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 10-09-2021 and time 01:43:44 (Italy) 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

  • 09-09-2021 23:43:44 (UTC)
  • 10-09-2021 01:43:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1310, 10.8620 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 10 6960 10660
Gaggio Montano BO 10 4878 15538
San Marcello Pistoiese PT 10 6416 21954
Fanano MO 10 2989 24943
Sambuca Pistoiese PT 11 1626 26569
Sestola MO 13 2508 29077
Piteglio PT 14 1683 30760
Castel di Casio BO 15 3448 34208
Abetone PT 16 621 34829
Montese MO 17 3353 38182
Montecreto MO 17 940 39122
Fiumalbo MO 18 1280 40402
Camugnano BO 19 1885 42287

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 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)
56 Km SW of Bologna (386663 inhabitants)
57 Km NE of Viareggio (62467 inhabitants)
58 Km S of Modena (184973 inhabitants)
58 Km E of Massa (69479 inhabitants)
59 Km NE of Pisa (89158 inhabitants)
61 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 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 1.1 2021-09-09
23:43:44		 44.1307 10.8623 10 2022-03-30
13:04:08		 Bollettino Sismico Italiano INGV 95985581
Reviewed
Rev100 		ML 1.7 2021-09-09
23:43:44		 44.1137 10.8457 14 2021-09-09
23:48:06		 Sala Sismica INGV-Roma 95249861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-09 23:43:44 ± 0.1
Latitude 44.1307 ± 0.0063
Longitude 10.8623 ± 0.0075
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 95985581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 555
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.11421
Epicentral distance of station farthest from the epicenter (degree) 0.47484
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 95985581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-24 02:57:52

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 95249861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-09 23:48:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2021-09-09T23:43:58.07 0.3 undecidable manual S 102 40.4262 50 0.6 66
IV.CRMI.HNN. 2021-09-09T23:43:57.16 0.6 undecidable manual S 166 38.3283 50 0.24 48
GU.GSCL.HHN. 2021-09-09T23:43:55.37 0.3 undecidable manual S 318 32.745 50 -0.05 76
IV.MOCL.EHZ. 2021-09-09T23:43:54.27 0.6 undecidable manual S 119 28.9488 50 -0.14 50
IV.MPPT.EHZ. 2021-09-09T23:43:53.68 0.3 undecidable manual S 137 26.4513 50 -0.06 77
IV.PII.HHZ. 2021-09-09T23:43:53.52 0.6 undecidable manual P 211 52.7028 50 -0.17 48
IV.BDI.HNZ. 2021-09-09T23:43:52.35 0.3 undecidable manual S 251 22.5552 114 -0.25 74
IV.SEI.HHZ. 2021-09-09T23:43:51.53 0.3 undecidable manual P 102 40.4262 50 -0.26 72
IV.FNVD.HHZ. 2021-09-09T23:43:51.92 0.6 undecidable manual S 79 21.1677 116 -0.24 50
IV.ZCCA.HHZ. 2021-09-09T23:43:50.14 0.1 positive manual P 20 26.0517 50 0.57 91
GU.POPM.HHZ. 2021-09-09T23:43:50.19 0.3 undecidable manual S 222 12.6762 129 0.52 71
IV.CRMI.HNN. 2021-09-09T23:43:50.70 0.6 undecidable manual P 166 38.3283 50 -0.76 41
GU.GSCL.HHN. 2021-09-09T23:43:50.38 0.3 undecidable manual P 318 32.745 50 -0.22 73
IV.MOCL.EHZ. 2021-09-09T23:43:50.05 0.6 undecidable manual P 119 28.9488 50 0.02 51
IV.MPPT.EHZ. 2021-09-09T23:43:49.47 0.3 undecidable manual P 137 26.4513 50 -0.17 75
IV.FNVD.HHZ. 2021-09-09T23:43:48.51 0.1 positive manual P 79 21.1677 116 -0.22 100
IV.BDI.HNZ. 2021-09-09T23:43:48.85 0.3 undecidable manual P 251 22.5552 114 -0.13 76
GU.POPM.HHZ. 2021-09-09T23:43:47.57 0.3 undecidable manual P 222 12.6762 129 0.29 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHN. ML:1.8 0.0006414999999999999 0.2 AML other m 2021-09-09T23:43:50.28
GU.POPM.HHE. ML:1.6 0.0004215 0.18 AML other m 2021-09-09T23:43:50.64
IV.MPPT.EHE. ML:0.9 0.00004045 0.38 AML other m 2021-09-09T23:43:54.19
IV.MPPT.EHN. ML:0.8 0.00003537208 0.2176 AML other m 2021-09-09T23:43:54.42
IV.MOCL.EHE. ML:0.8 0.000030730615 0.2816 AML other m 2021-09-09T23:43:54.81
IV.ZCCA.HHN. ML:0.7 0.000028356840000000002 0.3456 AML other m 2021-09-09T23:43:56.52
IV.ZCCA.HHE. ML:1.0 0.00005588035 0.32 AML other m 2021-09-09T23:43:56.86
IV.ZCCA.HNN. ML:1.4 0.00014954239999999999 1.0112 AML other m 2021-09-09T23:43:57.18
IV.ZCCA.HNE. ML:1.2 0.00009091028 0.5248 AML other m 2021-09-09T23:43:58.45
IV.MOCL.EHN. ML:0.5 0.0000154540155 0.2176 AML other m 2021-09-09T23:43:58.90
IV.PII.HHE. ML:1.1 0.000029452469999999998 0.2432 AML other m 2021-09-09T23:44:02.50
IV.SEI.HHN. ML:1.1 0.0000461451 0.4352 AML other m 2021-09-09T23:44:02.86
IV.PII.HHN. ML:1.0 0.000025082565 0.192 AML other m 2021-09-09T23:44:02.93
IV.SEI.HHE. ML:1.3 0.000071042695 0.4352 AML other m 2021-09-09T23:44:03.00
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