Earthquake with magnitude of ML 1.2 on date 24-01-2020 and time 07:11:21 (UTC) in region 6 km S Empoli (FI)

A magnitude ML 1.2 earthquake occured in region: 6 km S Empoli (FI), on

  • 24-01-2020 07:11:21 (UTC)
  • 24-01-2020 08:11:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.66, 10.96 at 11 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
Empoli FI 6 48109 48109
Castelfiorentino FI 7 17504 65613
San Miniato PI 9 27934 93547
Capraia e Limite FI 9 7670 101217
Montelupo Fiorentino FI 9 14098 115315
Montespertoli FI 10 13537 128852
Cerreto Guidi FI 12 10870 139722
Montaione FI 13 3700 143422
Fucecchio FI 14 23618 167040
Vinci FI 14 14604 181644
Gambassi Terme FI 14 4870 186514
Certaldo FI 15 16121 202635
Santa Croce sull'Arno PI 15 14601 217236
Montopoli in Val d'Arno PI 16 11148 228384
Palaia PI 16 4612 232996
Lastra a Signa FI 17 20156 253152
Carmignano PO 17 14450 267602
Signa FI 17 19179 286781
Castelfranco di Sotto PI 17 13427 300208
Lamporecchio PT 18 7508 307716
San Casciano in Val di Pesa FI 18 17062 324778
Poggio a Caiano PO 19 10007 334785
Larciano PT 19 6394 341179

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Scandicci (50609 inhabitants)
27 Km SW of Prato (191150 inhabitants)
27 Km W of Firenze (382808 inhabitants)
30 Km S of Pistoia (90315 inhabitants)
42 Km E of Lucca (89046 inhabitants)
45 Km E of Pisa (89158 inhabitants)
49 Km NW of Siena (53903 inhabitants)
54 Km E of Livorno (159219 inhabitants)
61 Km E of Viareggio (62467 inhabitants)
77 Km SE of Massa (69479 inhabitants)
78 Km W of Arezzo (99543 inhabitants)
83 Km SE of Carrara (63133 inhabitants)
97 Km SW of Bologna (386663 inhabitants)
98 Km SW of Imola (69797 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
Rev 100 ML 1.2 2020-01-24
07:11:21
43.66 10.96 11 2020-01-24
07:20:49
Sala Sismica INGV-Roma 75788531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-24 07:11:21 ± 0.17
Latitude 43.66 ± 0.01
Longitude 10.96 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75788531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 702
Semi-minor axis of confidence ellipse (meter) 598
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55128
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 75788531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-24 07:20:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CARD.HHE. 2020-01-24T07:11:38.31 0.1 undecidable manual S 317 0.4973 50 -0.22 93
IV.MAGO.CHE. 2020-01-24T07:11:37.00 0.1 undecidable manual S 209 0.447 50 -0.04 98
IV.RUFI.EHZ. 2020-01-24T07:11:36.34 0.1 undecidable manual S 66 0.4344 50 -0.33 92
GU.POPM.HHZ. 2020-01-24T07:11:36.47 0.1 undecidable manual S 339 0.4065 50 0.64 85
GU.MAIM.HHN. 2020-01-24T07:11:35.71 0.1 undecidable manual S 307 0.4182 50 -0.47 90
IV.TRIF.CHN. 2020-01-24T07:11:33.09 0.1 undecidable manual P 184 0.5513 50 0.94 72
IV.FIR.HHZ. 2020-01-24T07:11:32.31 3.0 undecidable manual S 0.54 0
IV.PII.HHZ. 2020-01-24T07:11:32.71 0.3 undecidable manual S 281 0.3175 50 -0.48 69
IV.SEI.HHZ. 2020-01-24T07:11:31.56 1.0 undecidable manual P 36 0.4847 50 0.54 22
GU.CARD.HHE. 2020-01-24T07:11:31.41 0.1 undecidable manual P 317 0.4973 50 0.17 94
IV.MAGO.CHE. 2020-01-24T07:11:30.06 0.6 undecidable manual P 209 0.447 50 -0.32 46
IV.FROS.CHE. 2020-01-24T07:11:30.46 0.1 undecidable manual P 162 0.4775 50 -0.43 90
IV.RUFI.EHZ. 2020-01-24T07:11:30.31 0.3 negative manual P 66 0.4344 50 0.15 72
GU.POPM.HHZ. 2020-01-24T07:11:30.36 1.0 undecidable manual P 339 0.4065 50 0.68 21
GU.MAIM.HHN. 2020-01-24T07:11:29.91 0.1 undecidable manual P 307 0.4182 50 0.03 99
IV.PII.HHZ. 2020-01-24T07:11:28.52 0.1 negative manual P 281 0.3175 50 0.37 94
IV.MPPT.EHZ. 2020-01-24T07:11:28.11 0.3 negative manual P 18 0.3076 50 0.12 74
IV.CRMI.HHZ. 2020-01-24T07:11:27.34 0.1 undecidable manual S 7 0.1322 126 -0.23 100
IV.OSSC.HHZ. 2020-01-24T07:11:26.67 0.6 undecidable manual P 124 0.2518 50 -0.37 48
IV.CRMI.HHZ. 2020-01-24T07:11:24.96 0.6 undecidable manual P 7 0.1322 126 0.05 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:0.9 7.795E-5 0.7 AML other m 2020-01-24T07:11:27.44
IV.CRMI.HHN. ML:1 0.0001006 0.16 AML other m 2020-01-24T07:11:27.84
IV.OSSC.HHN. ML:1.1 6.25E-5 0.78 AML other m 2020-01-24T07:11:31.03
IV.OSSC.HHE. ML:1.2 8.475E-5 1.44 AML other m 2020-01-24T07:11:32.00
IV.PII.HHE. ML:1.6 0.0001485 0.12 AML other m 2020-01-24T07:11:33.08
IV.MPPT.EHE. ML:1 4.39E-5 0.54 AML other m 2020-01-24T07:11:33.29
IV.PII.HHN. ML:1.7 0.000185 0.24 AML other m 2020-01-24T07:11:33.74
IV.MPPT.EHN. ML:1 4.29E-5 0.56 AML other m 2020-01-24T07:11:34.18
GU.POPM.HHE. ML:1.3 5.635E-5 1.16 AML other m 2020-01-24T07:11:38.29
GU.POPM.HHN. ML:1.2 4.945E-5 1.18 AML other m 2020-01-24T07:11:39.27
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