Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 27-01-2021 and time 02:07:21 (UTC) in region 2 km S Casola in Lunigiana (MS)

A magnitude ML 1.4 earthquake occured in region: 2 km S Casola in Lunigiana (MS), on

  • 27-01-2021 02:07:21 (UTC)
  • 27-01-2021 03:07:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1820, 10.1800 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Casola in Lunigiana MS 2 988 988
Minucciano LU 3 2102 3090
Fivizzano MS 8 7925 11015
Piazza al Serchio LU 10 2367 13382
Sillano Giuncugnano LU 11 1085 14467
Vagli Sotto LU 11 939 15406
Camporgiano LU 13 2176 17582
San Romano in Garfagnana LU 13 1410 18992
Carrara MS 13 63133 82125
Comano MS 13 714 82839
Careggine LU 13 564 83403
Fosdinovo MS 14 4883 88286
Licciana Nardi MS 15 4949 93235
Ortonovo SP 15 8277 101512
Castelnuovo Magra SP 16 8415 109927
Massa MS 16 69479 179406
Aulla MS 17 11263 190669
Villa Collemandina LU 18 1334 192003
Montignoso MS 18 10323 202326
Castiglione di Garfagnana LU 19 1818 204144
Sarzana SP 19 21976 226120
Tresana MS 19 2044 228164
Podenzana MS 19 2180 230344
Pieve Fosciana LU 19 2414 232758

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NE of Carrara (63133 inhabitants)
16 Km N of Massa (69479 inhabitants)
29 Km E of La Spezia (93959 inhabitants)
35 Km N of Viareggio (62467 inhabitants)
46 Km NW of Lucca (89046 inhabitants)
55 Km NW of Pisa (89158 inhabitants)
65 Km W of Pistoia (90315 inhabitants)
68 Km SW of Reggio nell'Emilia (171345 inhabitants)
70 Km S of Parma (192836 inhabitants)
71 Km N of Livorno (159219 inhabitants)
79 Km SW of Modena (184973 inhabitants)
81 Km W of Prato (191150 inhabitants)
87 Km SW of Carpi (70699 inhabitants)
93 Km NW of Scandicci (50609 inhabitants)
98 Km W of Firenze (382808 inhabitants)
99 Km W of Bologna (386663 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2021-01-27
02:07:21		 44.1823 10.1802 9 2021-07-12
16:54:56		 Bollettino Sismico Italiano INGV 86760911
Reviewed
Rev100 		ML 1.4 2021-01-27
02:07:22		 44.2022 10.2193 10 2021-01-27
02:14:24		 Sala Sismica INGV-Roma 86620291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-27 02:07:21 ± 0.09
Latitude 44.1823 ± 0.0063
Longitude 10.1802 ± 0.0075
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86760911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 772
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.78421
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86760911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-11 11:14:30

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86620291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-27 02:14:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHZ. 2021-01-27T02:07:39.69 0.6 undecidable manual S 152 57.9975 50 -0.64 40
IV.BOB.HNE. 2021-01-27T02:07:38.11 0.6 undecidable manual P 319 87.0462 50 1.11 30
GU.POPM.HHZ. 2021-01-27T02:07:37.65 0.6 undecidable manual S 108 48.4182 50 -0.11 46
IV.BDI.HHZ. 2021-01-27T02:07:34.24 0.3 undecidable manual S 112 35.6421 50 -0.12 71
GU.GSCL.HHN. 2021-01-27T02:07:34.68 0.3 undecidable manual S 60 37.4292 50 -0.15 70
GU.MAIM.HHZ. 2021-01-27T02:07:34.71 0.6 undecidable manual S 140 38.8278 50 -0.5 43
GU.GRAM.HHZ. 2021-01-27T02:07:33.85 0.1 undecidable manual S 345 35.3424 50 -0.44 89
GU.CARD.HHZ. 2021-01-27T02:07:32.21 0.1 undecidable manual S 126 29.6481 106 -0.35 91
IV.PII.HHZ. 2021-01-27T02:07:32.60 0.1 undecidable manual P 152 57.9975 50 0.08 92
GU.POPM.HHZ. 2021-01-27T02:07:31.57 0.3 undecidable manual P 108 48.4182 50 0.53 63
GU.GRAM.HHZ. 2021-01-27T02:07:29.08 0.1 positive manual P 345 35.3424 50 0.05 96
GU.MAIM.HHZ. 2021-01-27T02:07:29.81 0.3 undecidable manual P 140 38.8278 50 0.25 69
IV.BDI.HHZ. 2021-01-27T02:07:29.08 0.1 undecidable manual P 112 35.6421 50 0.01 97
GU.GSCL.HHN. 2021-01-27T02:07:29.61 0.3 undecidable manual P 60 37.4292 50 0.27 69
GU.SARM.EHN. 2021-01-27T02:07:28.57 0.1 undecidable manual S 89 17.5713 116 -0.07 99
GU.CARD.HHZ. 2021-01-27T02:07:28.14 0.1 undecidable manual P 126 29.6481 106 0.1 96
MN.VLC.HHZ. 2021-01-27T02:07:28.36 0.1 undecidable manual S 99 16.5723 117 0.01 100
MN.VLC.HHZ. 2021-01-27T02:07:25.88 0.1 undecidable manual P 99 16.5723 117 0.28 95
GU.FIVI.HNE. 2021-01-27T02:07:25.41 0.1 undecidable manual S 326 7.5813 139 -0.43 93
GU.SARM.EHN. 2021-01-27T02:07:25.97 0.1 undecidable manual P 89 17.5713 116 0.2 96
GU.EQUI.HHN. 2021-01-27T02:07:24.82 0.1 undecidable manual S 230 2.7972 162 -0.18 99
GU.FIVI.HNE. 2021-01-27T02:07:24.27 0.1 undecidable manual P 326 7.5813 139 0.12 100
GU.EQUI.HHN. 2021-01-27T02:07:23.90 0.1 undecidable manual P 230 2.7972 162 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.VLC.HHN. ML:1.3 0.00016549999999999998 0.08 AML other m 2021-01-27T02:07:28.51
MN.VLC.HHE. ML:1.1 0.0001185 0.7 AML other m 2021-01-27T02:07:28.51
GU.CARD.HHE. ML:1.3 0.00010400000000000001 0.14 AML other m 2021-01-27T02:07:32.50
GU.CARD.HHN. ML:1.4 0.00013900000000000002 0.12 AML other m 2021-01-27T02:07:32.44
GU.GRAM.HHE. ML:1.6 0.000175 0.86 AML other m 2021-01-27T02:07:35.63
IV.PLMA.HHE. ML:1.4 0.0001175 0.26 AML other m 2021-01-27T02:07:35.79
GU.GRAM.HHN. ML:1.7 0.00022250000000000004 0.3 AML other m 2021-01-27T02:07:35.69
IV.PLMA.HHN. ML:1.3 0.00010059999999999999 0.32 AML other m 2021-01-27T02:07:35.67
IV.PII.HHN. ML:1.6 0.0000812 1.3 AML other m 2021-01-27T02:07:43.85
IV.PII.HHE. ML:1.5 0.00006475 0.56 AML other m 2021-01-27T02:07:44.90
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