Earthquake (quarry blast) with magnitude of ML 1.1 on date 12-10-2021 and time 16:55:29 (Italy) in region 5 km W Piteglio (PT)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 5 km W Piteglio (PT), on

  • 12-10-2021 14:55:29 (UTC)
  • 12-10-2021 16:55:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0280, 10.7090 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Piteglio PT 5 1683 1683
San Marcello Pistoiese PT 7 6416 8099
Cutigliano PT 9 1488 9587
Bagni di Lucca LU 10 6161 15748
Marliana PT 11 3210 18958
Villa Basilica LU 12 1633 20591
Massa e Cozzile PT 13 7983 28574
Abetone PT 13 621 29195
Pescia PT 14 19644 48839
Borgo a Mozzano LU 14 6994 55833
Coreglia Antelminelli LU 15 5215 61048
Uzzano PT 16 5770 66818
Buggiano PT 16 8825 75643
Serravalle Pistoiese PT 17 11659 87302
Montecatini-Terme PT 17 20409 107711
Fiumalbo MO 18 1280 108991
Pieve a Nievole PT 18 9266 118257
Barga LU 19 10034 128291
Monsummano Terme PT 19 21338 149629
Pistoia PT 20 90315 239944
Montecarlo LU 20 4428 244372

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Pistoia (90315 inhabitants)
26 Km NE of Lucca (89046 inhabitants)
35 Km W of Prato (191150 inhabitants)
41 Km E of Viareggio (62467 inhabitants)
43 Km NE of Pisa (89158 inhabitants)
45 Km E of Massa (69479 inhabitants)
48 Km NW of Scandicci (50609 inhabitants)
49 Km E of Carrara (63133 inhabitants)
52 Km NW of Firenze (382808 inhabitants)
62 Km NE of Livorno (159219 inhabitants)
71 Km E of La Spezia (93959 inhabitants)
71 Km S of Modena (184973 inhabitants)
72 Km SW of Bologna (386663 inhabitants)
75 Km S of Reggio nell'Emilia (171345 inhabitants)
85 Km S of Carpi (70699 inhabitants)
88 Km W of Imola (69797 inhabitants)
91 Km SE of Parma (192836 inhabitants)
93 Km NW of Siena (53903 inhabitants)
98 Km W of Faenza (58541 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 2021-10-12
14:55:29
44.0277 10.7093 1 2022-03-30
13:04:35
Bollettino Sismico Italiano INGV 100716001
Reviewed
Rev100
ML 1.1 2021-10-12
14:55:29
44.0473 10.7112 6 2021-10-12
15:51:08
Sala Sismica INGV-Roma 96478091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 14:55:29 ± 0.1
Latitude 44.0277 ± 0.0090
Longitude 10.7093 ± 0.0075
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 100716001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 980
Semi-minor axis of confidence ellipse (meter) 590
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 9
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 9
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33994
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 100716001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-07 16:10:59

ML:1.1

Field Value
Value 1.1
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 96478091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-12 15:51:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ILOS.HHZ. 2021-10-12T14:57:27.53 3.0 negative manual Pg 16.870001 0
OT.CGL1.HHZ. 2021-10-12T14:57:21.85 3.0 undecidable manual Pg 16.610001 0
OT.OT12.EHZ. 2021-10-12T14:56:55.13 3.0 positive manual Pg 11.38 0
IV.BRES.EHZ. 2021-10-12T14:56:52.49 3.0 undecidable manual Sn -0.82 0
OT.OT17.EHZ. 2021-10-12T14:56:48.03 3.0 positive manual Pg 9.21 0
IV.COLB.HHZ. 2021-10-12T14:56:34.98 3.0 undecidable manual Pn -3.47 0
IV.FOSV.EHZ. 2021-10-12T14:56:23.91 3.0 undecidable manual Sn -4.15 0
IV.AGLI.HHZ. 2021-10-12T14:56:21.91 3.0 undecidable manual Pn -3.97 0
IV.FAGN.HHZ. 2021-10-12T14:56:18.86 3.0 positive manual Pn -0.81 0
GU.IMI.HHZ. 2021-10-12T14:56:09.83 3.0 undecidable manual Pg -0.85 0
IV.MURB.HHZ. 2021-10-12T14:55:58.52 3.0 undecidable manual P -4.2 0
IV.IMOL.HNZ. 2021-10-12T14:55:58.34 3.0 undecidable manual S -4.1 0
IV.ASQU.HHZ. 2021-10-12T14:55:47.78 3.0 negative manual P -3.31 0
IV.PII.HHZ. 2021-10-12T14:55:37.15 0.3 undecidable manual P 204 36.9297 91 -0.23 71
IV.MOCL.EHE. 2021-10-12T14:55:37.24 0.3 undecidable manual P 94 37.7289 91 -0.29 70
IV.CRMI.HHZ. 2021-10-12T14:55:36.69 0.1 undecidable manual P 140 33.6441 91 -0.01 100
IV.MPPT.EHZ. 2021-10-12T14:55:36.33 0.3 undecidable manual P 104 31.3464 91 0.07 74
GU.SARM.EHE. 2021-10-12T14:55:35.54 0.1 undecidable manual P 305 30.0477 91 -0.46 91
GU.MAIM.HHE. 2021-10-12T14:55:34.54 0.3 undecidable manual P 234 21.5673 91 0.25 73
GU.CARD.HHZ. 2021-10-12T14:55:33.77 0.3 undecidable manual P 270 18.1707 92 0.17 74
IV.BDI.HNZ. 2021-10-12T14:55:32.16 0.1 undecidable manual P 293 9.879 93 0.21 100
GU.POPM.HHZ. 2021-10-12T14:55:31.07 0.1 undecidable manual P 63 4.2957 97 0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHE. ML:1.1 0.0000435 0.96 AML other m 2021-10-12T14:55:43.98
GU.GSCL.HHN. ML:1.1 0.00004965 1.16 AML other m 2021-10-12T14:55:44.12
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