Earthquake with magnitude of ML 1.0 on date 15-10-2021 and time 16:52:44 (Italy) in region 5 km W Piteglio (PT)

A magnitude ML 1.0 earthquake occured in region: 5 km W Piteglio (PT), on

  • 15-10-2021 14:52:44 (UTC)
  • 15-10-2021 16:52:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.045, 10.714 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 6 6416 8099
Cutigliano PT 7 1488 9587
Bagni di Lucca LU 10 6161 15748
Abetone PT 12 621 16369
Marliana PT 13 3210 19579
Villa Basilica LU 14 1633 21212
Massa e Cozzile PT 15 7983 29195
Coreglia Antelminelli LU 15 5215 34410
Borgo a Mozzano LU 15 6994 41404
Pescia PT 16 19644 61048
Fiumalbo MO 16 1280 62328
Uzzano PT 18 5770 68098
Serravalle Pistoiese PT 18 11659 79757
Buggiano PT 18 8825 88582
Montecatini-Terme PT 18 20409 108991
Barga LU 19 10034 119025
Fanano MO 19 2989 122014
Lizzano in Belvedere BO 19 2212 124226
Pieve a Nievole PT 20 9266 133492
Pievepelago MO 20 2222 135714

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of Pistoia (90315 inhabitants)
28 Km NE of Lucca (89046 inhabitants)
36 Km NW of Prato (191150 inhabitants)
42 Km E of Viareggio (62467 inhabitants)
44 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)
64 Km NE of Livorno (159219 inhabitants)
69 Km S of Modena (184973 inhabitants)
71 Km SW of Bologna (386663 inhabitants)
71 Km E of La Spezia (93959 inhabitants)
73 Km S of Reggio nell'Emilia (171345 inhabitants)
83 Km S of Carpi (70699 inhabitants)
87 Km W of Imola (69797 inhabitants)
90 Km SE of Parma (192836 inhabitants)
95 Km NW of Siena (53903 inhabitants)
97 Km W of Faenza (58541 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2021-10-15
14:52:44
44.0452 10.7142 5 2021-10-15
14:59:13
Sala Sismica INGV-Roma 96615211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 14:52:44 ± 0.06
Latitude 44.0452 ± 0.0036
Longitude 10.7142 ± 0.0025
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96615211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 449
Semi-minor axis of confidence ellipse (meter) 43
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.46315
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 96615211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-15 14:59:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2021-10-15T14:52:57.87 0.3 undecidable manual S 97 0.3381 97 0.17 69
IV.CRMI.HHZ. 2021-10-15T14:52:56.89 0.3 undecidable manual S 142 0.3139 98 0.09 71
IV.MPPT.EHZ. 2021-10-15T14:52:55.62 0.3 undecidable manual S 108 0.2842 98 -0.04 72
IV.SEI.HHZ. 2021-10-15T14:52:54.65 0.1 undecidable manual P 89 0.4632 50 -0.09 91
GU.SARM.EHE. 2021-10-15T14:52:54.84 0.3 undecidable manual S 302 0.2644 99 -0.06 72
IV.PII.HHZ. 2021-10-15T14:52:52.16 0.1 undecidable manual P 203 0.3507 97 -0.28 90
GU.GSCL.HHE. 2021-10-15T14:52:51.77 0.1 undecidable manual P 344 0.3184 98 0.04 95
IV.MPPT.EHZ. 2021-10-15T14:52:51.11 0.1 undecidable manual P 108 0.2842 98 0.13 94
IV.CRMI.HHZ. 2021-10-15T14:52:51.45 0.1 undecidable manual P 142 0.3139 98 -0.19 92
IV.FNVD.HHE. 2021-10-15T14:52:51.98 0.3 undecidable manual P 67 0.3184 98 0.26 68
IV.MOCL.EHZ. 2021-10-15T14:52:51.98 0.1 undecidable manual P 97 0.3381 97 -0.18 92
GU.CARD.HHZ. 2021-10-15T14:52:51.50 0.3 undecidable manual S 264 0.1682 104 0.24 70
GU.SARM.EHE. 2021-10-15T14:52:50.31 0.1 undecidable manual P 302 0.2644 99 -0.23 92
GU.MAIM.HHZ. 2021-10-15T14:52:49.54 0.1 undecidable manual P 231 0.2077 102 0.24 93
GU.CARD.HHZ. 2021-10-15T14:52:48.50 0.1 undecidable manual P 264 0.1682 104 0.06 98
IV.BDI.HHZ. 2021-10-15T14:52:47.95 0.6 undecidable manual S 282 0.0872 116 -0.37 46
IV.BDI.HHZ. 2021-10-15T14:52:46.94 0.1 undecidable manual P 282 0.0872 116 0.2 96
GU.POPM.HHZ. 2021-10-15T14:52:46.45 0.3 undecidable manual S 90 0.0306 144 -0.16 74
GU.POPM.HHZ. 2021-10-15T14:52:45.82 0.1 undecidable manual P 90 0.0306 144 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHN. ML:0.9 0.0001335 0.36 AML other m 2021-10-15T14:52:48.69
IV.BDI.HHE. ML:1 0.000189 0.98 AML other m 2021-10-15T14:52:50.86
GU.CARD.HHN. ML:1 8.36E-5 0.92 AML other m 2021-10-15T14:52:52.11
GU.CARD.HHE. ML:0.9 6.735E-5 0.14 AML other m 2021-10-15T14:52:53.59
IV.PII.HHE. ML:1.2 5.58E-5 0.72 AML other m 2021-10-15T14:52:58.39
IV.PII.HHN. ML:1 3.58E-5 0.62 AML other m 2021-10-15T14:52:59.72
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