Earthquake with magnitude of ML 1.0 on date 23-10-2018 and time 09:25:43 (Italy) in region 1 km E Cerreto Guidi (FI)

A magnitude ML 1.0 earthquake occured in region: 1 km E Cerreto Guidi (FI), on

  • 23-10-2018 07:25:43 (UTC)
  • 23-10-2018 09:25:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.76, 10.89 at 8 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
Cerreto Guidi FI 1 10870 10870
Vinci FI 4 14604 25474
Lamporecchio PT 6 7508 32982
Empoli FI 7 48109 81091
Larciano PT 7 6394 87485
Capraia e Limite FI 7 7670 95155
Fucecchio FI 7 23618 118773
San Miniato PI 10 27934 146707
Santa Croce sull'Arno PI 11 14601 161308
Montelupo Fiorentino FI 11 14098 175406
Carmignano PO 12 14450 189856
Quarrata PT 12 26190 216046
Castelfranco di Sotto PI 13 13427 229473
Monsummano Terme PT 14 21338 250811
Ponte Buggianese PT 15 8804 259615
Montopoli in Val d'Arno PI 15 11148 270763
Poggio a Caiano PO 15 10007 280770
Pieve a Nievole PT 15 9266 290036
Chiesina Uzzanese PT 16 4552 294588
Montecatini-Terme PT 17 20409 314997
Serravalle Pistoiese PT 17 11659 326656
Signa FI 17 19179 345835
Santa Maria a Monte PI 17 13253 359088
Lastra a Signa FI 17 20156 379244
Altopascio LU 18 15481 394725
Castelfiorentino FI 18 17504 412229
Agliana PT 18 17525 429754
Buggiano PT 19 8825 438579
Pistoia PT 19 90315 528894
Palaia PI 20 4612 533506
Uzzano PT 20 5770 539276
Montespertoli FI 20 13537 552813

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Pistoia (90315 inhabitants)
21 Km SW of Prato (191150 inhabitants)
23 Km W of Scandicci (50609 inhabitants)
29 Km W of Firenze (382808 inhabitants)
33 Km E of Lucca (89046 inhabitants)
40 Km E of Pisa (89158 inhabitants)
52 Km E of Livorno (159219 inhabitants)
53 Km E of Viareggio (62467 inhabitants)
61 Km NW of Siena (53903 inhabitants)
67 Km E of Massa (69479 inhabitants)
73 Km E of Carrara (63133 inhabitants)
86 Km W of Arezzo (99543 inhabitants)
89 Km SW of Bologna (386663 inhabitants)
93 Km SW of Imola (69797 inhabitants)
93 Km E of La Spezia (93959 inhabitants)
99 Km SW of Faenza (58541 inhabitants)
99 Km S of Modena (184973 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 1.0 2018-10-23
07:25:43
43.76 10.89 8 2018-10-23
07:39:35
Sala Sismica INGV-Roma 62238031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-23 07:25:43 ± 0.14
Latitude 43.76 ± 0.01
Longitude 10.89 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 62238031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 943
Semi-minor axis of confidence ellipse (meter) 425
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
Circular confidence region, given by single value of horizontal uncertainty (meter) 940
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 14
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) 0.40829
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 62238031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-23 07:39:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2018-10-23T07:28:19.17 3.0 undecidable manual Sn -9.42 0
IV.CDRU.HHZ. 2018-10-23T07:28:08.02 3.0 undecidable manual Sg 12.45 0
CR.STON.BHZ. 2018-10-23T07:28:07.00 3.0 undecidable manual Sn 0.77 0
IV.PAOL.HHZ. 2018-10-23T07:27:50.37 3.0 undecidable manual Sg 13.85 0
IV.PTRJ.HNZ. 2018-10-23T07:27:37.20 3.0 undecidable manual Sg 6.82 0
IV.SGG.HHZ. 2018-10-23T07:27:24.25 3.0 undecidable manual Sn -3.73 0
IV.ERC.EHZ. 2018-10-23T07:27:15.00 3.0 undecidable manual Pn -0.32 0
IV.CDRU.HHZ. 2018-10-23T07:27:13.07 3.0 undecidable manual Pg 13.94 0
IV.VARE.HHZ. 2018-10-23T07:26:56.77 3.0 undecidable manual Sn -5.21 0
IV.MCRV.HHZ. 2018-10-23T07:26:55.49 3.0 positive manual Pn 0.21 0
IV.GAVE.EHZ. 2018-10-23T07:26:48.30 3.0 undecidable manual Sg 1.49 0
IV.EUCT.HNZ. 2018-10-23T07:26:43.22 3.0 undecidable manual Sg -2.01 0
IV.PTRJ.HNZ. 2018-10-23T07:26:42.86 3.0 undecidable manual Pn -2.12 0
IV.LIK.EHZ.01 2018-10-23T07:26:41.82 3.0 undecidable manual Pg 5.22 0
IV.ARRO.EHZ. 2018-10-23T07:26:39.95 3.0 undecidable manual Sn -6.7 0
OX.MPRI.HHZ. 2018-10-23T07:26:39.19 3.0 positive manual Pg 4.56 0
NI.VINO.HHZ. 2018-10-23T07:26:38.72 3.0 undecidable manual Pn 2.37 0
IV.MCIV.HHZ. 2018-10-23T07:26:24.84 3.0 undecidable manual S -4.86 0
IV.GAVE.EHZ. 2018-10-23T07:26:20.81 3.0 undecidable manual Pg 0.31 0
IV.BRSN.EHZ. 2018-10-23T07:26:08.38 3.0 negative manual P -0.7 0
IV.CSNT.HHZ. 2018-10-23T07:25:59.04 0.3 undecidable manual S 135 0.4083 50 0.16 71
GU.MAIM.HHZ. 2018-10-23T07:25:56.87 0.6 undecidable manual S 298 0.3256 50 0.42 46
IV.MOCL.EHE. 2018-10-23T07:25:55.72 0.3 undecidable manual S 41 0.3202 50 -0.57 66
IV.PII.HHZ. 2018-10-23T07:25:54.08 0.3 undecidable manual S 262 0.2671 106 -0.31 71
IV.MPPT.EHE. 2018-10-23T07:25:53.44 0.1 undecidable manual S 36 0.2428 107 -0.06 100
IV.CSNT.HHZ. 2018-10-23T07:25:52.76 0.1 undecidable manual P 135 0.4083 50 0.29 92
IV.BDI.HHZ. 2018-10-23T07:25:52.36 1.0 positive manual P 325 0.3687 50 0.56 22
GU.MAIM.HHZ. 2018-10-23T07:25:51.30 0.3 negative manual P 298 0.3256 50 0.24 71
IV.MOCL.EHE. 2018-10-23T07:25:50.47 0.1 undecidable manual P 41 0.3202 50 -0.5 90
GU.POPM.HHN. 2018-10-23T07:25:50.98 0.1 undecidable manual P 341 0.2995 104 0.41 92
IV.PII.HHZ. 2018-10-23T07:25:49.55 0.1 negative manual P 262 0.2671 106 -0.33 94
IV.MPPT.EHE. 2018-10-23T07:25:49.72 0.1 undecidable manual P 36 0.2428 107 0.36 94
IV.CRMI.HHZ. 2018-10-23T07:25:47.97 0.1 undecidable manual S 62 0.0728 136 0.26 99
IV.CRMI.HHZ. 2018-10-23T07:25:45.59 0.1 undecidable manual P 62 0.0728 136 -0.43 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHN. ML:1 4.9681515E-5 0.16 AML other m 2018-10-23T07:25:55.36
IV.PII.HHE. ML:0.9 4.1600405E-5 0.16 AML other m 2018-10-23T07:25:54.43
GU.MAIM.HHN. ML:0.7 1.8389825E-5 0.6816 AML other m 2018-10-23T07:26:06.59
GU.MAIM.HHE. ML:0.8 2.3403412E-5 0.6592 AML other m 2018-10-23T07:25:56.68
IV.BDI.HNE. ML:1.5 0.000107900455 0.8576 AML other m 2018-10-23T07:26:06.80
IV.BDI.HHN. ML:0.9 2.4619805E-5 0.4224 AML other m 2018-10-23T07:26:05.02
IV.BDI.HNN. ML:1.5 0.00011695505 0.7808 AML other m 2018-10-23T07:25:59.53
IV.BDI.HHE. ML:0.8 2.0823385E-5 0.16 AML other m 2018-10-23T07:26:03.47
IV.CSNT.HHN. ML:0.9 2.593101E-5 0.1792 AML other m 2018-10-23T07:25:54.76
IV.CSNT.HHE. ML:1 2.99285275E-5 0.16 AML other m 2018-10-23T07:26:03.61
IV.BRSN.HNE. ML:2.9 0.00065037539 1.0912 AML other m 2018-10-23T07:26:24.69
IV.BRSN.HNN. ML:2.7 0.0004635213 0.3488 AML other m 2018-10-23T07:26:35.46
IV.BRSN.EHN. ML:2.8 0.00061237505 0.7808 AML other m 2018-10-23T07:26:20.58
IV.BRSN.EHE. ML:2.9 0.0007281367 0.72 AML other m 2018-10-23T07:26:26.63
IV.GAVE.HNE. ML:2.6 0.00012229574 0.6592 AML other m 2018-10-23T07:27:13.92
IV.GAVE.EHE. ML:2.5 8.677951E-5 0.1984 AML other m 2018-10-23T07:26:55.12
IV.GAVE.EHN. ML:2.5 8.9684485E-5 0.1408 AML other m 2018-10-23T07:26:55.29
IV.GAVE.HNN. ML:2.9 0.00024011735 1.1904 AML other m 2018-10-23T07:27:06.57
NI.VINO.HHN. ML:2.6 4.113286E-5 1.7408 AML other m 2018-10-23T07:26:39.73
NI.VINO.HHE. ML:2.6 4.171627E-5 2.3008 AML other m 2018-10-23T07:26:39.71
OX.MPRI.HHE. ML:3.2 0.00015163825 0.16 AML other m 2018-10-23T07:27:43.50
OX.MPRI.HHN. ML:3.7 0.00050645065 0.1792 AML other m 2018-10-23T07:27:43.49
OX.MPRI.HNN. ML:3.6 0.0003984499 0.1984 AML other m 2018-10-23T07:27:43.48
OX.MPRI.HNE. ML:3.1 0.00013372365 0.1792 AML other m 2018-10-23T07:27:43.49
IV.LIK.EHE.01 ML:3.2 0.00014558375 0.48 AML other m 2018-10-23T07:27:42.53
IV.LIK.EHN.01 ML:3.2 0.0001531094 0.08 AML other m 2018-10-23T07:27:20.34
IV.PTRJ.HNE. ML:4.4 0.001449587 0.1088 AML other m 2018-10-23T07:26:45.12
IV.PTRJ.HHN. ML:4.8 0.0037122425 0.0992 AML other m 2018-10-23T07:26:45.29
IV.PTRJ.HNN. ML:4.8 0.0034413775 0.0896 AML other m 2018-10-23T07:26:45.30
IV.PTRJ.HHE. ML:3 6.432854E-5 0.3232 AML other m 2018-10-23T07:26:45.87
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