Earthquake (quarry blast) with magnitude of ML 0.7 on date 18-12-2018 and time 17:25:35 (Italy) in region 5 km W Piteglio (PT)

A magnitude ML 0.7 (quarry blast) earthquake occured in region: 5 km W Piteglio (PT), on

  • 18-12-2018 16:25:35 (UTC)
  • 18-12-2018 17:25:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.04, 10.71 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
Borgo a Mozzano LU 14 6994 36189
Pescia PT 15 19644 55833
Coreglia Antelminelli LU 15 5215 61048
Uzzano PT 17 5770 66818
Fiumalbo MO 17 1280 68098
Buggiano PT 17 8825 76923
Serravalle Pistoiese PT 17 11659 88582
Montecatini-Terme PT 18 20409 108991
Barga LU 18 10034 119025
Pieve a Nievole PT 19 9266 128291
Monsummano Terme PT 20 21338 149629

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Pistoia (90315 inhabitants)
27 Km NE of Lucca (89046 inhabitants)
36 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)
49 Km E of Carrara (63133 inhabitants)
49 Km NW of Scandicci (50609 inhabitants)
53 Km NW of Firenze (382808 inhabitants)
62 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)
85 Km S of Carpi (70699 inhabitants)
88 Km W of Imola (69797 inhabitants)
90 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
Rev 1000 ML 0.7 2018-12-18
16:25:35
44.03 10.71 1 2019-06-04
09:16:18
Bollettino Sismico Italiano INGV 69023411
Rev 100 ML 0.7 2018-12-18
16:25:35
44.05 10.71 4 2018-12-18
16:35:12
Sala Sismica INGV-Roma 63985961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-18 16:25:35 ± 0.07
Latitude 44.03 ± 0.01
Longitude 10.71 ± 0.01
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 69023411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 820
Semi-minor axis of confidence ellipse (meter) 390
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) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.70147
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 69023411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-30 09:08:13

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 63985961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-18 16:35:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2018-12-18T16:25:49.93 0.3 undecidable manual P 143 0.7015 50 -0.03 68
IV.FNVD.HHZ. 2018-12-18T16:25:42.39 0.3 undecidable manual P 66 0.3265 91 -0.06 73
IV.MPPT.EHZ. 2018-12-18T16:25:41.43 0.1 undecidable manual P 105 0.286 91 -0.12 97
IV.CRMI.HHZ. 2018-12-18T16:25:41.85 0.3 undecidable manual P 141 0.3085 91 -0.21 71
MN.VLC.HHZ. 2018-12-18T16:25:40.83 0.1 undecidable manual P 299 0.2617 91 -0.19 96
GU.SARM.EHZ. 2018-12-18T16:25:40.80 0.1 undecidable manual P 304 0.2662 91 -0.31 94
IV.MTCR.EHZ. 2018-12-18T16:25:39.96 0.1 positive manual P 92 0.2122 91 0.05 100
GU.MAIM.HHZ. 2018-12-18T16:25:39.69 0.3 undecidable manual P 232 0.1961 91 0.13 74
GU.CARD.HHZ. 2018-12-18T16:25:38.91 0.3 undecidable manual P 267 0.1619 92 0.11 75
IV.BDI.HHZ. 2018-12-18T16:25:37.40 0.1 positive manual P 289 0.0854 93 0.31 97
GU.POPM.HHZ. 2018-12-18T16:25:36.29 0.1 undecidable manual P 74 0.0369 97 0.27 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHE. ML:0 0.00094623685 1.5648 AML other m 2018-12-18T16:25:36.17
GU.POPM.HHN. ML:0 0.0019472445 0.2176 AML other m 2018-12-18T16:25:37.21
MN.VLC.HNE. ML:1.2 9.417159E-5 0.8448 AML other m 2018-12-18T16:25:40.18
MN.VLC.HHE. ML:0.4 1.496073E-5 0.7424 AML other m 2018-12-18T16:25:40.92
GU.CARD.HHN. ML:0.7 4.5648185E-5 0.0768 AML other m 2018-12-18T16:25:42.50
GU.CARD.HHE. ML:0.7 4.4406525E-5 0.5248 AML other m 2018-12-18T16:25:42.53
IV.MTCR.EHN. ML:0.5 2.210826E-5 0.4 AML other m 2018-12-18T16:25:42.95
IV.MTCR.EHE. ML:0.3 1.7090365E-5 0.6272 AML other m 2018-12-18T16:25:43.69
GU.SARM.EHN. ML:1.1 5.970986E-5 0.3968 AML other m 2018-12-18T16:25:45.49
GU.SARM.EHE. ML:1 5.596279E-5 0.4352 AML other m 2018-12-18T16:25:45.31
IV.MPPT.EHN. ML:0.8 2.93546425E-5 0.0864 AML other m 2018-12-18T16:25:45.80
IV.MPPT.EHE. ML:0.5 1.3176745E-5 0.4224 AML other m 2018-12-18T16:25:46.41
IV.CRMI.HNE. ML:1.3 9.276324E-5 1.0272 AML other m 2018-12-18T16:25:52.38
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download