Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 29-09-2021 and time 07:53:03 (Italy) in region 4 km SE Peccioli (PI)

A magnitude ML 1.4 earthquake occured in region: 4 km SE Peccioli (PI), on

  • 29-09-2021 05:53:03 (UTC)
  • 29-09-2021 07:53:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5150, 10.7370 at 3 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
Peccioli PI 4 4807 4807
Lajatico PI 4 1336 6143
Terricciola PI 5 4627 10770
Chianni PI 8 1392 12162
Capannoli PI 9 6381 18543
Casciana Terme Lari PI 10 12529 31072
Palaia PI 11 4612 35684
Montecatini Val di Cecina PI 14 1749 37433
Ponsacco PI 14 15611 53044
Santa Luce PI 15 1684 54728
Montaione FI 15 3700 58428
Crespina Lorenzana PI 15 5457 63885
Volterra PI 16 10519 74404
Montopoli in Val d'Arno PI 17 11148 85552
Castellina Marittima PI 17 2025 87577
Gambassi Terme FI 18 4870 92447
Orciano Pisano PI 18 647 93094
Pontedera PI 19 29223 122317
Fauglia PI 19 3682 125999
Riparbella PI 20 1603 127602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Livorno (159219 inhabitants)
35 Km SE of Pisa (89158 inhabitants)
41 Km SE of Lucca (89046 inhabitants)
45 Km SW of Scandicci (50609 inhabitants)
49 Km SW of Pistoia (90315 inhabitants)
50 Km SW of Prato (191150 inhabitants)
51 Km SW of Firenze (382808 inhabitants)
53 Km W of Siena (53903 inhabitants)
55 Km SE of Viareggio (62467 inhabitants)
75 Km SE of Massa (69479 inhabitants)
81 Km SE of Carrara (63133 inhabitants)
89 Km NW of Grosseto (82087 inhabitants)
93 Km W of Arezzo (99543 inhabitants)
98 Km SE of La Spezia (93959 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 2021-09-29
05:53:03		 43.5153 10.7372 3 2022-03-30
13:04:09		 Bollettino Sismico Italiano INGV 96254211
Reviewed
Rev100 		ML 1.6 2021-09-29
05:53:03		 43.5087 10.7177 9 2021-09-29
06:05:07		 Sala Sismica INGV-Roma 96016421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-29 05:53:03 ± 0.12
Latitude 43.5153 ± 0.0054
Longitude 10.7372 ± 0.0099
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96254211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 849
Semi-minor axis of confidence ellipse (meter) 218
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58456
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96254211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-18 10:42:24

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 96016421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-29 06:05:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MRB1.HHZ. 2021-09-29T05:55:03.80 3.0 undecidable manual Sg 13.92 0
IV.TDS.HHZ. 2021-09-29T05:54:50.63 3.0 undecidable manual Pg 23.07 0
IV.EFIU.HHZ. 2021-09-29T05:54:42.41 3.0 negative manual Pn 1.58 0
IV.RNI2.HHZ. 2021-09-29T05:54:42.53 3.0 undecidable manual Sg 13.21 0
GU.LSD.HHZ. 2021-09-29T05:54:41.20 3.0 undecidable manual Sn 4.24 0
IV.AGLI.HHZ. 2021-09-29T05:54:19.29 3.0 undecidable manual Sn -1.45 0
OT.OT17.EHZ. 2021-09-29T05:54:14.93 3.0 positive manual Pg 12.45 0
GU.MGRO.HHZ. 2021-09-29T05:54:11.17 3.0 undecidable manual Sn -0.33 0
IV.CADC.EHZ. 2021-09-29T05:54:06.81 3.0 undecidable manual Sg 1.04 0
IV.ZEN8.EHZ. 2021-09-29T05:54:05.89 3.0 undecidable manual Sn -2.73 0
IV.PTRJ.HHZ. 2021-09-29T05:54:04.65 3.0 undecidable manual Pn 6.84 0
MN.TRI.HHZ. 2021-09-29T05:53:59.73 3.0 negative manual Pg 7.32 0
IV.BRSN.EHZ. 2021-09-29T05:53:46.62 3.0 undecidable manual S 1.59 0
IV.ATMI.HHZ. 2021-09-29T05:53:23.43 3.0 positive manual P -1.23 0
IV.OSSC.HHZ. 2021-09-29T05:53:17.15 0.6 undecidable manual S 89 40.9257 94 -0.75 40
IV.MOCL.EHZ. 2021-09-29T05:53:17.11 0.6 undecidable manual P 33 64.8906 50 0.95 35
IV.CRMI.HHZ. 2021-09-29T05:53:16.47 0.6 undecidable manual S 32 36.6411 94 0.05 49
IV.BDI.HNZ. 2021-09-29T05:53:15.58 0.3 undecidable manual P 349 61.7937 50 -0.09 70
GU.POPM.HHZ. 2021-09-29T05:53:15.04 0.3 undecidable manual P 2 58.7967 50 -0.17 69
IV.MPPT.EHN. 2021-09-29T05:53:14.61 0.3 undecidable manual P 30 56.5989 50 -0.27 68
IV.FROS.CHZ. 2021-09-29T05:53:13.43 0.3 undecidable manual P 135 47.9187 93 0.16 71
IV.PII.HHZ. 2021-09-29T05:53:13.22 0.6 undecidable manual S 323 28.5492 95 -0.4 46
GU.MAIM.HHZ. 2021-09-29T05:53:13.19 0.3 undecidable manual P 336 48.3183 93 -0.17 71
IV.TRIF.CHZ. 2021-09-29T05:53:12.68 0.1 undecidable manual P 163 46.4202 93 -0.3 92
IV.MAGO.CHZ. 2021-09-29T05:53:12.98 0.6 undecidable manual S 193 27.6501 96 -0.31 47
IV.OSSC.HHZ. 2021-09-29T05:53:11.93 0.3 undecidable manual P 89 40.9257 94 0.05 73
IV.CRMI.HHZ. 2021-09-29T05:53:11.48 0.1 positive manual P 32 36.6411 94 0.45 91
IV.MAGO.CHZ. 2021-09-29T05:53:09.69 0.1 undecidable manual P 193 27.6501 96 0.47 92
IV.PII.HHZ. 2021-09-29T05:53:09.46 0.1 undecidable manual P 323 28.5492 95 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHE. ML:1.6 0.00021793504999999998 0.096 AML other m 2021-09-29T05:53:13.15
IV.MAGO.CHN. ML:1.6 0.00023752780000000002 0.0896 AML other m 2021-09-29T05:53:13.32
IV.PII.HHN. ML:1.6 0.00021050000000000002 0.34 AML other m 2021-09-29T05:53:13.68
IV.PII.HHE. ML:1.3 0.00010657613500000001 0.2592 AML other m 2021-09-29T05:53:13.59
IV.CRMI.HHN. ML:1.3 0.00007862193500000001 0.2592 AML other m 2021-09-29T05:53:16.70
IV.CRMI.HHE. ML:1.2 0.00006254999999999999 0.6 AML other m 2021-09-29T05:53:17.34
IV.OSSC.HHE. ML:1.5 0.00009863812 0.3808 AML other m 2021-09-29T05:53:17.81
IV.OSSC.HHN. ML:1.4 0.00008740785500000001 0.3392 AML other m 2021-09-29T05:53:17.89
IV.FROS.CHN. ML:1.4 0.00006987935000000001 0.3904 AML other m 2021-09-29T05:53:19.15
IV.FROS.CHE. ML:1.4 0.00006585281 0.144 AML other m 2021-09-29T05:53:18.96
IV.TRIF.CHN. ML:1.5 0.00009000444 0.2016 AML other m 2021-09-29T05:53:18.86
IV.TRIF.CHE. ML:1.5 0.000096904865 0.1824 AML other m 2021-09-29T05:53:19.14
GU.MAIM.HHN. ML:1.3 0.0000538 0.8 AML other m 2021-09-29T05:53:19.11
GU.MAIM.HHE. ML:1.0 0.00003195 0.48 AML other m 2021-09-29T05:53:19.67
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