Earthquake with magnitude of ML 0.4 on date 16-10-2020 and time 20:07:02 (UTC) in region 2 km SW Agliana (PT)

A magnitude ML 0.4 earthquake occured in region: 2 km SW Agliana (PT), on

  • 16-10-2020 20:07:02 (UTC)
  • 16-10-2020 22:07:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.89, 10.99 at 9 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
Agliana PT 2 17525 17525
Quarrata PT 5 26190 43715
Montale PT 6 10737 54452
Montemurlo PO 6 18456 72908
Pistoia PT 8 90315 163223
Prato PO 9 191150 354373
Carmignano PO 9 14450 368823
Poggio a Caiano PO 10 10007 378830
Lamporecchio PT 11 7508 386338
Larciano PT 12 6394 392732
Vinci FI 13 14604 407336
Serravalle Pistoiese PT 13 11659 418995
Vaiano PO 14 9895 428890
Monsummano Terme PT 14 21338 450228
Campi Bisenzio FI 14 46166 496394
Calenzano FI 15 17489 513883
Signa FI 15 19179 533062
Pieve a Nievole PT 16 9266 542328
Lastra a Signa FI 16 20156 562484
Capraia e Limite FI 17 7670 570154
Cerreto Guidi FI 17 10870 581024
Montecatini-Terme PT 17 20409 601433
Cantagallo PO 18 3105 604538
Sesto Fiorentino FI 18 48958 653496
Marliana PT 18 3210 656706
Montelupo Fiorentino FI 18 14098 670804
Empoli FI 20 48109 718913
Massa e Cozzile PT 20 7983 726896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of Pistoia (90315 inhabitants)
9 Km W of Prato (191150 inhabitants)
21 Km NW of Scandicci (50609 inhabitants)
25 Km NW of Firenze (382808 inhabitants)
40 Km E of Lucca (89046 inhabitants)
51 Km E of Pisa (89158 inhabitants)
59 Km E of Viareggio (62467 inhabitants)
67 Km NE of Livorno (159219 inhabitants)
69 Km NW of Siena (53903 inhabitants)
70 Km E of Massa (69479 inhabitants)
73 Km SW of Bologna (386663 inhabitants)
74 Km E of Carrara (63133 inhabitants)
77 Km SW of Imola (69797 inhabitants)
84 Km SW of Faenza (58541 inhabitants)
84 Km S of Modena (184973 inhabitants)
86 Km NW of Arezzo (99543 inhabitants)
92 Km W of Forlì (117913 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
96 Km E of La Spezia (93959 inhabitants)
99 Km S of Carpi (70699 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 0.4 2020-10-16
20:07:02
43.89 10.99 9 2020-10-16
20:18:08
Sala Sismica INGV-Roma 83827221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-16 20:07:02 ± 0.08
Latitude 43.89 ± 0.00
Longitude 10.99 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83827221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 432
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 134
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33365
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 83827221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-16 20:18:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.POPM.HHZ. 2020-10-16T20:07:12.08 0.6 undecidable manual S 312 0.2266 110 0.19 47
IV.CAVE.HHZ. 2020-10-16T20:07:12.81 3.0 undecidable manual P -0.01 0
IV.RONT.HHZ. 2020-10-16T20:07:10.20 0.3 undecidable manual P 72 0.3336 50 0.23 69
IV.BDI.HHE. 2020-10-16T20:07:09.72 0.3 undecidable manual P 301 0.331 50 -0.22 69
IV.MOCL.EHZ. 2020-10-16T20:07:09.74 0.6 undecidable manual S 50 0.1772 115 -0.36 46
IV.FNVD.HHZ. 2020-10-16T20:07:09.23 0.6 undecidable manual P 19 0.2914 50 -0.02 48
IV.FIR.HHZ. 2020-10-16T20:07:08.68 3.0 positive manual P 0 0
GU.POPM.HHZ. 2020-10-16T20:07:07.86 1.0 positive manual P 312 0.2266 110 -0.1 24
IV.CRMI.HNE. 2020-10-16T20:07:07.38 0.6 undecidable manual S 185 0.0971 130 -0.11 49
IV.MPPT.EHZ. 2020-10-16T20:07:07.56 0.6 undecidable manual S 48 0.0962 130 0.09 50
IV.MOCL.EHZ. 2020-10-16T20:07:06.83 0.3 undecidable manual P 50 0.1772 115 -0.1 73
IV.CRMI.HNE. 2020-10-16T20:07:05.46 0.1 undecidable manual P 185 0.0971 130 0.04 100
IV.MPPT.EHZ. 2020-10-16T20:07:05.56 0.1 undecidable manual P 48 0.0962 130 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHE. ML:0.3 1.6221425E-5 0.256 AML other m 2020-10-16T20:07:09.78
IV.MOCL.EHN. ML:0.3 1.643741E-5 0.1024 AML other m 2020-10-16T20:07:10.28
GU.POPM.HHE. ML:0.4 1.368858E-5 0.1152 AML other m 2020-10-16T20:07:12.77
GU.POPM.HHN. ML:0.4 1.44630795E-5 0.0896 AML other m 2020-10-16T20:07:12.29
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