Earthquake with magnitude of ML 1.2 on date 22-11-2019 and time 17:43:59 (UTC) in region 1 km SW Castelfiorentino (FI)

A magnitude ML 1.2 earthquake occured in region: 1 km SW Castelfiorentino (FI), on

  • 22-11-2019 17:43:59 (UTC)
  • 22-11-2019 18:43:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6, 10.97 at 2 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
Castelfiorentino FI 1 17504 17504
Montaione FI 7 3700 21204
Gambassi Terme FI 7 4870 26074
Certaldo FI 9 16121 42195
Montespertoli FI 10 13537 55732
San Miniato PI 13 27934 83666
Empoli FI 13 48109 131775
Montelupo Fiorentino FI 15 14098 145873
Palaia PI 16 4612 150485
Capraia e Limite FI 16 7670 158155
San Gimignano SI 16 7820 165975
Tavarnelle Val di Pesa FI 17 7800 173775
Barberino Val d'Elsa FI 18 4386 178161
Montopoli in Val d'Arno PI 18 11148 189309
San Casciano in Val di Pesa FI 19 17062 206371
Fucecchio FI 19 23618 229989
Cerreto Guidi FI 19 10870 240859
Santa Croce sull'Arno PI 19 14601 255460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SW of Scandicci (50609 inhabitants)
30 Km SW of Firenze (382808 inhabitants)
33 Km SW of Prato (191150 inhabitants)
37 Km S of Pistoia (90315 inhabitants)
43 Km NW of Siena (53903 inhabitants)
46 Km SE of Lucca (89046 inhabitants)
47 Km E of Pisa (89158 inhabitants)
53 Km E of Livorno (159219 inhabitants)
65 Km E of Viareggio (62467 inhabitants)
75 Km W of Arezzo (99543 inhabitants)
82 Km SE of Massa (69479 inhabitants)
88 Km SE of Carrara (63133 inhabitants)
94 Km N of Grosseto (82087 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 2019-11-22
17:43:59
43.6 10.97 2 2019-11-22
18:29:14
Sala Sismica INGV-Roma 73968411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-22 17:43:59 ± 0.13
Latitude 43.60 ± 0.01
Longitude 10.97 ± 0.01
Depth (km) 2 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73968411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 830
Semi-minor axis of confidence ellipse (meter) 600
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49013
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 73968411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-22 18:29:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-11-22T17:45:45.68 3.0 undecidable manual Pg 11.91 0
IT.VNF1.HGZ. 2019-11-22T17:45:40.51 3.0 undecidable manual Sg 5.04 0
IV.SPS2.HHZ. 2019-11-22T17:45:25.75 3.0 negative manual Pn -2.53 0
IV.PTRJ.HHZ. 2019-11-22T17:45:01.12 3.0 undecidable manual Pg 6.66 0
SI.KOSI.HHZ. 2019-11-22T17:45:00.34 3.0 undecidable manual Sn -3.87 0
IT.VNF1.HGZ. 2019-11-22T17:44:56.65 3.0 undecidable manual Pg 6.81 0
IV.DGI.HHZ. 2019-11-22T17:44:52.68 3.0 undecidable manual Pn 0.88 0
IV.FIAM.HHZ. 2019-11-22T17:44:33.27 3.0 undecidable manual Pg -2.16 0
IV.MNTT.EHZ. 2019-11-22T17:44:28.18 3.0 undecidable manual Pg -4.84 0
IV.FROS.CHZ. 2019-11-22T17:44:14.29 0.1 undecidable manual S 161 0.4155 92 -0.92 72
IV.MAGO.CHE. 2019-11-22T17:44:14.95 0.3 undecidable manual S 214 0.3984 92 0.41 69
IV.PII.HHZ. 2019-11-22T17:44:11.85 0.3 undecidable manual S 291 0.3417 92 -0.49 68
GU.MAIM.HHN. 2019-11-22T17:44:09.01 0.3 undecidable manual P 312 0.4641 92 -0.48 66
IV.TRIF.CHN. 2019-11-22T17:44:09.69 3.0 undecidable manual P 0.4901 -0.38 0
IV.CSNT.HHZ. 2019-11-22T17:44:09.25 0.3 undecidable manual S 119 0.2671 93 -0.24 71
IV.MAGO.CHE. 2019-11-22T17:44:08.57 0.3 undecidable manual P 214 0.3984 92 0.52 68
IV.FROS.CHZ. 2019-11-22T17:44:08.43 0.1 undecidable manual P 161 0.4155 92 0 97
IV.PII.HHZ. 2019-11-22T17:44:07.06 0.1 undecidable manual P 291 0.3417 92 0.28 96
IV.OSSC.HNE. 2019-11-22T17:44:07.88 0.3 undecidable manual S 111 0.2167 94 0.34 73
IV.CRMI.HHZ. 2019-11-22T17:44:06.51 0.3 undecidable manual S 3 0.1934 94 -0.12 75
IV.CSNT.HHZ. 2019-11-22T17:44:05.13 0.3 undecidable manual P 119 0.2671 93 0 75
IV.OSSC.HNE. 2019-11-22T17:44:04.28 0.3 undecidable manual P 111 0.2167 94 0.28 74
IV.CRMI.HHZ. 2019-11-22T17:44:03.68 0.1 undecidable manual P 3 0.1934 94 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:0.7 3.407119E-5 0.128 AML other m 2019-11-22T17:44:06.66
IV.CRMI.HHN. ML:0.5 2.5688E-5 0.128 AML other m 2019-11-22T17:44:07.38
IV.CRMI.HNE. ML:1 8.276459E-5 0.1408 AML other m 2019-11-22T17:44:06.66
IV.CRMI.HNN. ML:0.8 5.0397145E-5 0.1408 AML other m 2019-11-22T17:44:07.39
IV.PII.HHE. ML:1.5 0.0001266455 0.1664 AML other m 2019-11-22T17:44:12.00
IV.PII.HHN. ML:1.5 0.0001177737 0.1408 AML other m 2019-11-22T17:44:12.25
IV.FROS.CHE. ML:1.3 6.1359535E-5 0.2048 AML other m 2019-11-22T17:44:16.36
IV.FROS.CHN. ML:1.4 8.062597E-5 1.5744 AML other m 2019-11-22T17:44:15.22
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