Earthquake (quarry blast) with magnitude of ML 0.6 on date 31-08-2018 and time 08:21:04 (UTC) in region 4 km W Piteglio (PT)

A magnitude ML 0.6 (quarry blast) earthquake occured in region: 4 km W Piteglio (PT), on

  • 31-08-2018 08:21:04 (UTC)
  • 31-08-2018 10:21:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.035, 10.712 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 8 1488 9587
Bagni di Lucca LU 10 6161 15748
Marliana PT 12 3210 18958
Abetone PT 13 621 19579
Villa Basilica LU 13 1633 21212
Massa e Cozzile PT 14 7983 29195
Pescia PT 15 19644 48839
Borgo a Mozzano LU 15 6994 55833
Coreglia Antelminelli LU 15 5215 61048
Uzzano PT 17 5770 66818
Fiumalbo MO 17 1280 68098
Serravalle Pistoiese PT 17 11659 79757
Buggiano PT 17 8825 88582
Montecatini-Terme PT 17 20409 108991
Pieve a Nievole PT 19 9266 118257
Barga LU 19 10034 128291
Monsummano Terme PT 20 21338 149629
Pistoia PT 20 90315 239944

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Pistoia (90315 inhabitants)
27 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)
46 Km E of Massa (69479 inhabitants)
49 Km NW of Scandicci (50609 inhabitants)
49 Km E of Carrara (63133 inhabitants)
53 Km NW of Firenze (382808 inhabitants)
63 Km NE of Livorno (159219 inhabitants)
70 Km S of Modena (184973 inhabitants)
71 Km E of La Spezia (93959 inhabitants)
72 Km SW of Bologna (386663 inhabitants)
74 Km S of Reggio nell'Emilia (171345 inhabitants)
84 Km S of Carpi (70699 inhabitants)
88 Km W of Imola (69797 inhabitants)
91 Km SE of Parma (192836 inhabitants)
94 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 0.6 2018-08-31
08:21:04
44.0347 10.7122 1 2019-04-24
14:51:14
Bollettino Sismico Italiano INGV 66966551
Reviewed
Rev100
ML 0.7 2018-08-31
08:21:04
44.0372 10.7117 4 2018-08-31
08:28:09
Sala Sismica INGV-Roma 60413401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-31 08:21:04 ± 0.07
Latitude 44.0347 ± 0.0081
Longitude 10.7122 ± 0.0050
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 66966551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 950
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 950
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.33815
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:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 66966551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-27 11:14:08

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 60413401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-31 08:28:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHE. 2018-08-31T08:21:12.16 0.3 undecidable manual P 95 0.3381 91 -0.29 69
IV.MPPT.EHZ. 2018-08-31T08:21:11.25 0.1 undecidable manual P 106 0.2824 91 0.04 98
IV.CRMI.HHZ. 2018-08-31T08:21:11.59 0.1 undecidable manual P 141 0.3067 91 -0.16 95
GU.SARM.EHE. 2018-08-31T08:21:10.50 0.3 undecidable manual P 304 0.2689 91 -0.41 69
MN.VLC.HNE. 2018-08-31T08:21:10.74 0.1 undecidable manual P 298 0.2653 91 -0.08 98
IV.MTCR.EHZ. 2018-08-31T08:21:09.63 0.1 positive manual P 92 0.2086 91 0.06 99
GU.MAIM.HHE. 2018-08-31T08:21:09.47 0.3 undecidable manual P 233 0.1988 91 0.11 74
GU.CARD.HHZ. 2018-08-31T08:21:08.80 0.3 undecidable manual P 267 0.1655 92 0.19 73
IV.BDI.HHZ. 2018-08-31T08:21:07.04 0.1 undecidable manual P 289 0.0881 93 0.14 100
GU.POPM.HHZ. 2018-08-31T08:21:05.95 0.1 undecidable manual P 72 0.0342 98 0.26 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHN. ML:0 8.76E-5 0.52 AML other m 2018-08-31T08:21:09.76
GU.POPM.HHN. ML:0 0.001599529 0.16 AML other m 2018-08-31T08:21:07.17
GU.POPM.HHE. ML:0 0.0011409244 0.1152 AML other m 2018-08-31T08:21:07.65
IV.MTCR.EHN. ML:0.7 3.415761E-5 0.2432 AML other m 2018-08-31T08:21:15.03
IV.MTCR.EHE. ML:0.6 2.7697135E-5 0.1856 AML other m 2018-08-31T08:21:14.90
IV.MPPT.EHN. ML:0.3 1.12376205E-5 0.3584 AML other m 2018-08-31T08:21:12.74
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