Earthquake with magnitude of ML 1.8 on date 05-12-2021 and time 09:49:50 (Italy) in region 3 km NW Fivizzano (MS)

A magnitude ML 1.8 earthquake occured in region: 3 km NW Fivizzano (MS), on

  • 05-12-2021 08:49:50 (UTC)
  • 05-12-2021 09:49:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.253, 10.094 at 10 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
Fivizzano MS 3 7925 7925
Licciana Nardi MS 5 4949 12874
Comano MS 6 714 13588
Casola in Lunigiana MS 9 988 14576
Bagnone MS 11 1887 16463
Aulla MS 11 11263 27726
Tresana MS 11 2044 29770
Villafranca in Lunigiana MS 12 4770 34540
Minucciano LU 13 2102 36642
Podenzana MS 13 2180 38822
Fosdinovo MS 14 4883 43705
Filattiera MS 15 2309 46014
Mulazzo MS 17 2424 48438
Sillano Giuncugnano LU 17 1085 49523
Bolano SP 17 7813 57336
Santo Stefano di Magra SP 17 9360 66696
Monchio delle Corti PR 18 933 67629
Castelnuovo Magra SP 18 8415 76044
Piazza al Serchio LU 18 2367 78411
Sarzana SP 19 21976 100387
Ortonovo SP 19 8277 108664
Carrara MS 20 63133 171797

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Carrara (63133 inhabitants)
24 Km N of Massa (69479 inhabitants)
27 Km NE of La Spezia (93959 inhabitants)
45 Km N of Viareggio (62467 inhabitants)
56 Km NW of Lucca (89046 inhabitants)
64 Km SW of Parma (192836 inhabitants)
65 Km NW of Pisa (89158 inhabitants)
65 Km SW of Reggio nell'Emilia (171345 inhabitants)
75 Km W of Pistoia (90315 inhabitants)
79 Km SW of Modena (184973 inhabitants)
80 Km N of Livorno (159219 inhabitants)
86 Km SW of Carpi (70699 inhabitants)
90 Km W of Prato (191150 inhabitants)
94 Km E of Genova (586655 inhabitants)
94 Km SE of Piacenza (102191 inhabitants)
98 Km S of Cremona (71901 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.8 2021-12-05
08:49:50
44.2533 10.0942 11 2021-12-05
08:59:37
Sala Sismica INGV-Roma 98170451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-05 08:49:50 ± 0.11
Latitude 44.2533 ± 0.0072
Longitude 10.0942 ± 0.0088
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 98170451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 856
Semi-minor axis of confidence ellipse (meter) 579
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 205
Circular confidence region, given by single value of horizontal uncertainty (meter) 860
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.84536
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 98170451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-05 08:59:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2021-12-05T08:51:33.33 3.0 undecidable manual Sg 10.17 0
IV.LRP.EHZ. 2021-12-05T08:51:27.25 3.0 undecidable manual Sn -7.39 0
IV.VIVA.HHZ. 2021-12-05T08:51:25.24 3.0 undecidable manual Sg 2.26 0
IV.MCEL.HHZ. 2021-12-05T08:51:21.81 3.0 negative manual Pn 3.7 0
IV.ARVD.HHZ. 2021-12-05T08:50:59.01 3.0 undecidable manual Sn 0.08 0
IV.OFFI.HHZ. 2021-12-05T08:50:45.70 3.0 undecidable manual Pg 6.74 0
IV.VIVA.HHZ. 2021-12-05T08:50:38.83 3.0 undecidable manual Pn -3.6 0
IV.MAGA.HHZ. 2021-12-05T08:50:16.93 3.0 undecidable manual P -2.44 0
IV.CELB.HHZ. 2021-12-05T08:50:16.88 3.0 undecidable manual P -2.32 0
GU.RNCA.HHZ. 2021-12-05T08:50:07.10 0.3 undecidable manual P 285 0.8454 50 0.77 70
IV.CRMI.HHZ. 2021-12-05T08:50:06.18 0.3 undecidable manual P 125 0.7833 50 0.9 67
IV.BDI.HHZ. 2021-12-05T08:50:04.75 0.6 undecidable manual S 118 0.4065 50 -0.27 59
IV.MSSA.HHZ. 2021-12-05T08:50:04.85 0.6 undecidable manual S 279 0.4173 50 -0.49 57
IV.BOB.HHE. 2021-12-05T08:50:04.03 0.3 undecidable manual P 318 0.6907 50 0.34 83
GU.CARD.HHZ. 2021-12-05T08:50:03.30 0.6 undecidable manual S 129 0.3588 50 -0.31 59
GU.GORR.HHE. 2021-12-05T08:50:03.86 0.3 undecidable manual P 302 0.6727 50 0.48 81
GU.POPM.HHZ. 2021-12-05T08:50:01.04 0.3 undecidable manual P 113 0.5189 50 0.29 87
IV.ERBM.EHE. 2021-12-05T08:50:01.31 0.6 undecidable manual S 54 0.2815 50 -0.01 64
IV.PLMA.HHZ. 2021-12-05T08:50:00.10 0.6 undecidable manual S 220 0.2671 50 -0.77 52
GU.MAIM.HHZ. 2021-12-05T08:49:59.67 0.3 undecidable manual P 140 0.4443 50 0.2 90
GU.GRAM.HHZ. 2021-12-05T08:49:59.16 0.6 undecidable manual S 355 0.2374 50 -0.86 51
IV.MSSA.HHZ. 2021-12-05T08:49:59.05 0.3 undecidable manual P 279 0.4173 50 0.04 93
IV.BDI.HHZ. 2021-12-05T08:49:58.66 0.3 undecidable manual P 118 0.4065 50 -0.17 91
GU.CARD.HHZ. 2021-12-05T08:49:57.99 0.3 undecidable manual P 129 0.3588 50 -0.03 95
IV.PLMA.HHZ. 2021-12-05T08:49:56.42 0.3 undecidable manual P 220 0.2671 50 -0.02 97
IV.ERBM.EHE. 2021-12-05T08:49:56.74 0.3 undecidable manual P 54 0.2815 50 0.05 96
GU.EQUI.HHZ. 2021-12-05T08:49:55.46 0.6 undecidable manual S 154 0.0971 134 -0.12 65
GU.GRAM.HHZ. 2021-12-05T08:49:55.58 0.3 undecidable manual P 355 0.2374 50 -0.36 90
GU.FIVI.HNZ. 2021-12-05T08:49:53.85 0.6 undecidable manual S 121 0.027 164 -0.31 63
GU.EQUI.HHZ. 2021-12-05T08:49:53.40 0.3 undecidable manual P 154 0.0971 134 0.02 100
GU.FIVI.HNZ. 2021-12-05T08:49:52.49 0.3 undecidable manual P 121 0.027 164 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.EQUI.HHE. ML:1.5 0.0003698404 0.2176 AML other m 2021-12-05T08:49:56.37
GU.EQUI.HHN. ML:1.5 0.0003628034 0.1792 AML other m 2021-12-05T08:49:56.39
GU.GRAM.HHE. ML:2.1 0.000784 0.26 AML other m 2021-12-05T08:50:00.17
GU.GRAM.HHN. ML:2.2 0.000826 0.36 AML other m 2021-12-05T08:50:00.49
GU.CARD.HHE. ML:2 0.00033 0.14 AML other m 2021-12-05T08:50:03.86
GU.CARD.HHN. ML:1.8 0.00020532295 0.0768 AML other m 2021-12-05T08:50:05.06
GU.POPM.HHN. ML:1.8 0.0001285 0.2 AML other m 2021-12-05T08:50:09.47
GU.POPM.HHE. ML:1.8 0.0001385 0.14 AML other m 2021-12-05T08:50:12.77
GU.FIVI.HNE. ML:2.2 0.0025883615 0.1408 AML other m 2021-12-05T08:49:54.07
GU.FIVI.HNN. ML:2.1 0.0022207355 0.16 AML other m 2021-12-05T08:49:52.81
IV.PLMA.HHN. ML:1.8 0.0002853093 0.1216 AML other m 2021-12-05T08:50:00.93
IV.BDI.HHE. ML:1.5 0.000101649555 0.2432 AML other m 2021-12-05T08:50:06.99
IV.BDI.HHN. ML:1.6 0.00010620238 0.224 AML other m 2021-12-05T08:50:06.20
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download