INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.7 on date 21-02-2019 and time 17:26:57 (UTC) in region 5 km NW Sillano Giuncugnano (LU)

A magnitude ML 0.7 earthquake occured in region: 5 km NW Sillano Giuncugnano (LU), on

  • 21-02-2019 17:26:57 (UTC)
  • 21-02-2019 18:26:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.25, 10.24 at 12 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
Sillano Giuncugnano LU 5 1085 1085
Casola in Lunigiana MS 7 988 2073
Piazza al Serchio LU 9 2367 4440
Minucciano LU 9 2102 6542
Fivizzano MS 10 7925 14467
Comano MS 10 714 15181
San Romano in Garfagnana LU 12 1410 16591
Camporgiano LU 12 2176 18767
Ventasso RE 15 4295 23062
Vagli Sotto LU 15 939 24001
Careggine LU 16 564 24565
Villa Collemandina LU 16 1334 25899
Licciana Nardi MS 16 4949 30848
Castiglione di Garfagnana LU 17 1818 32666
Pieve Fosciana LU 19 2414 35080

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Carrara (63133 inhabitants)
25 Km NE of Massa (69479 inhabitants)
37 Km E of La Spezia (93959 inhabitants)
42 Km N of Viareggio (62467 inhabitants)
49 Km NW of Lucca (89046 inhabitants)
59 Km SW of Reggio nell'Emilia (171345 inhabitants)
61 Km N of Pisa (89158 inhabitants)
62 Km S of Parma (192836 inhabitants)
64 Km NW of Pistoia (90315 inhabitants)
70 Km SW of Modena (184973 inhabitants)
78 Km N of Livorno (159219 inhabitants)
78 Km SW of Carpi (70699 inhabitants)
80 Km NW of Prato (191150 inhabitants)
92 Km W of Bologna (386663 inhabitants)
93 Km NW of Scandicci (50609 inhabitants)
97 Km NW of Firenze (382808 inhabitants)
99 Km SE of Piacenza (102191 inhabitants)
100 Km S of Cremona (71901 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 0.7 2019-02-21
17:26:57
44.25 10.24 12 2019-02-21
17:38:18
Sala Sismica INGV-Roma 65768271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-21 17:26:57 ± 0.04
Latitude 44.25 ± 0.00
Longitude 10.24 ± 0.00
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65768271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 65768271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-21 17:38:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2019-02-21T17:28:02.58 3.0 undecidable manual Sg 4.6 0
IT.ORP.HGZ. 2019-02-21T17:28:01.87 3.0 positive manual Pn -1.43 0
IT.LRNO.HNZ. 2019-02-21T17:27:47.97 3.0 undecidable manual Pn -7.67 0
RD.PGF.BHZ. 2019-02-21T17:27:30.10 3.0 undecidable manual Pn 1.51 0
IV.SENI.EHZ. 2019-02-21T17:27:29.65 3.0 negative manual Pg 3.45 0
MN.TRI.HHZ. 2019-02-21T17:27:26.86 3.0 undecidable manual Pn 1.26 0
IV.EUCT.HNZ. 2019-02-21T17:27:21.46 3.0 undecidable manual Sn 2.28 0
GU.GRAM.HHZ. 2019-02-21T17:27:08.01 0.3 undecidable manual S 332 0.2734 93 -0.01 76
IV.EUCT.HNZ. 2019-02-21T17:27:07.13 3.0 positive manual Pn 2.6 0
IV.IMOL.HNZ. 2019-02-21T17:27:05.55 3.0 positive manual Pn -4.71 0
IV.PLMA.HHZ. 2019-02-21T17:27:04.74 0.3 undecidable manual P 235 0.3435 92 -0.01 75
GU.GRAM.HHZ. 2019-02-21T17:27:03.50 0.1 positive manual P 332 0.2734 93 -0.06 100
IV.ZONE.HHZ. 2019-02-21T17:27:03.49 3.0 undecidable manual P 0.53 0
MN.VLC.HHZ. 2019-02-21T17:27:03.94 0.6 undecidable manual S 131 0.1358 106 -0.03 51
GU.SARM.EHZ. 2019-02-21T17:27:03.67 0.6 undecidable manual S 120 0.1295 108 -0.13 50
MN.VLC.HHZ. 2019-02-21T17:27:01.32 0.3 positive manual P 131 0.1358 106 0.1 79
GU.SARM.EHZ. 2019-02-21T17:27:01.13 0.3 undecidable manual P 120 0.1295 108 0.01 77
IV.CNCS.HNZ. 2019-02-21T17:27:01.27 3.0 undecidable manual P -0.48 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SARM.EHE. ML:0.8 5.730222E-5 3.1616 AML other m 2019-02-21T17:27:04.66
GU.SARM.EHN. ML:0.5 2.9252525E-5 0.2432 AML other m 2019-02-21T17:27:04.18
MN.VLC.HHE. ML:0 9.0150245E-6 1.9968 AML other m 2019-02-21T17:27:05.11
MN.VLC.HHN. ML:0.4 2.2006465E-5 4.5184 AML other m 2019-02-21T17:27:04.42
MN.VLC.HNE. ML:1 8.5394395E-5 2.24 AML other m 2019-02-21T17:27:04.92
MN.VLC.HNN. ML:0.9 7.7454045E-5 7.9488 AML other m 2019-02-21T17:27:07.51
GU.GRAM.HHE. ML:0.9 4.11506E-5 0.3328 AML other m 2019-02-21T17:27:08.31
GU.GRAM.HHN. ML:0.7 2.5046735E-5 0.3584 AML other m 2019-02-21T17:27:08.23
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