Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 06-03-2021 and time 04:39:27 (Italy) in region 2 km NE Aulla (MS)

A magnitude ML 2.1 earthquake occured in region: 2 km NE Aulla (MS), on

  • 06-03-2021 03:39:27 (UTC)
  • 06-03-2021 04:39:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2250, 9.9910 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
Aulla MS 2 11263 11263
Tresana MS 4 2044 13307
Podenzana MS 4 2180 15487
Licciana Nardi MS 6 4949 20436
Villafranca in Lunigiana MS 8 4770 25206
Bolano SP 9 7813 33019
Santo Stefano di Magra SP 9 9360 42379
Bagnone MS 10 1887 44266
Fosdinovo MS 10 4883 49149
Fivizzano MS 11 7925 57074
Follo SP 12 6337 63411
Vezzano Ligure SP 12 7356 70767
Calice al Cornoviglio SP 13 1138 71905
Sarzana SP 13 21976 93881
Mulazzo MS 13 2424 96305
Filattiera MS 13 2309 98614
Arcola SP 14 10607 109221
Comano MS 14 714 109935
Castelnuovo Magra SP 14 8415 118350
Casola in Lunigiana MS 15 988 119338
Ortonovo SP 16 8277 127615
Lerici SP 18 10228 137843
Ameglia SP 18 4365 142208
Beverino SP 18 2429 144637
La Spezia SP 18 93959 238596
Minucciano LU 18 2102 240698
Carrara MS 18 63133 303831
Rocchetta di Vara SP 19 703 304534
Pontremoli MS 19 7357 311891
Riccò del Golfo di Spezia SP 20 3698 315589

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of La Spezia (93959 inhabitants)
18 Km NW of Carrara (63133 inhabitants)
24 Km NW of Massa (69479 inhabitants)
45 Km NW of Viareggio (62467 inhabitants)
59 Km NW of Lucca (89046 inhabitants)
65 Km NW of Pisa (89158 inhabitants)
70 Km SW of Parma (192836 inhabitants)
73 Km SW of Reggio nell'Emilia (171345 inhabitants)
79 Km NW of Livorno (159219 inhabitants)
81 Km W of Pistoia (90315 inhabitants)
87 Km E of Genova (586655 inhabitants)
88 Km SW of Modena (184973 inhabitants)
94 Km SW of Carpi (70699 inhabitants)
95 Km S of Piacenza (102191 inhabitants)
96 Km W of Prato (191150 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 2.1 2021-03-06
03:39:27		 44.2247 9.9912 9 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 91085231
Reviewed
Rev100 		ML 2.1 2021-03-06
03:39:27		 44.2272 9.9947 8 2021-03-06
03:47:33		 Sala Sismica INGV-Roma 87802511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-06 03:39:27 ± 0.09
Latitude 44.2247 ± 0.0054
Longitude 9.9912 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91085231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 597
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 1.25635
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 91085231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-11 10:21:54

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 87802511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-06 03:47:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-03-06T03:39:51.57 0.6 undecidable manual P 270 139.4604 50 0.53 35
IV.PII.HHZ. 2021-03-06T03:39:49.41 0.6 undecidable manual S 142 70.1742 50 -0.06 45
GU.GSCL.HHE. 2021-03-06T03:39:44.32 0.6 undecidable manual S 73 49.4172 50 0.39 43
IV.BDI.HHZ. 2021-03-06T03:39:44.75 0.6 undecidable manual S 110 51.3153 50 0.3 44
GU.MAIM.HHE. 2021-03-06T03:39:44.17 0.6 undecidable manual S 131 52.8027 50 -0.66 40
GU.RNCA.HHE. 2021-03-06T03:39:43.77 0.6 undecidable manual P 289 86.9463 50 0.83 35
GU.CARD.HHZ. 2021-03-06T03:39:42.44 0.6 undecidable manual S 119 44.8218 50 -0.28 45
IV.BOB.HHE. 2021-03-06T03:39:41.17 0.6 undecidable manual P 325 74.0703 50 0.21 43
IV.PII.HHZ. 2021-03-06T03:39:40.69 0.1 negative manual P 142 70.1742 50 0.33 85
IV.MSSA.HHZ. 2021-03-06T03:39:40.30 0.6 undecidable manual S 285 38.9277 50 -0.85 38
GU.GORR.HHE. 2021-03-06T03:39:40.36 1.0 undecidable manual P 308 69.7746 50 0.06 22
GU.SARM.EHE. 2021-03-06T03:39:39.27 0.6 undecidable manual S 98 32.8449 50 -0.25 46
GU.POPM.HHE. 2021-03-06T03:39:39.77 0.3 undecidable manual P 108 64.0914 50 0.34 64
MN.VLC.HHZ. 2021-03-06T03:39:39.06 0.6 undecidable manual S 103 32.2455 50 -0.29 46
GU.GRAM.HHZ. 2021-03-06T03:39:38.13 0.6 undecidable manual S 11 30.0477 50 -0.63 42
GU.MAIM.HHE. 2021-03-06T03:39:37.86 0.3 undecidable manual P 131 52.8027 50 0.18 68
GU.GSCL.HHE. 2021-03-06T03:39:37.44 0.1 undecidable manual P 73 49.4172 50 0.28 89
IV.BDI.HHZ. 2021-03-06T03:39:37.66 0.1 undecidable manual P 110 51.3153 50 0.2 90
GU.CARD.HHZ. 2021-03-06T03:39:36.46 0.3 undecidable manual P 119 44.8218 50 0 71
IV.MSSA.HHZ. 2021-03-06T03:39:35.67 0.3 undecidable manual P 285 38.9277 50 0.12 70
IV.PLMA.HHZ. 2021-03-06T03:39:35.81 0.6 undecidable manual S 209 22.2555 113 -0.5 45
GU.SARM.EHE. 2021-03-06T03:39:34.45 0.1 undecidable manual P 98 32.8449 50 -0.17 94
MN.VLC.HHZ. 2021-03-06T03:39:34.40 0.3 undecidable manual P 103 32.2455 50 -0.12 71
GU.GRAM.HHZ. 2021-03-06T03:39:33.93 0.1 positive manual P 11 30.0477 50 -0.25 93
GU.EQUI.HHZ. 2021-03-06T03:39:33.75 0.6 undecidable manual S 117 14.3745 123 -0.14 49
IV.PLMA.HHZ. 2021-03-06T03:39:32.76 0.1 undecidable manual P 209 22.2555 113 0 99
GU.FIVI.HNZ. 2021-03-06T03:39:32.76 0.6 undecidable manual S 81 10.9779 131 -0.16 49
GU.EQUI.HHZ. 2021-03-06T03:39:31.41 0.1 undecidable manual P 117 14.3745 123 0.04 99
GU.FIVI.HNZ. 2021-03-06T03:39:30.85 0.1 undecidable manual P 81 10.9779 131 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.FIVI.HNN. ML:2.6 0.005565403 0.2 AML other m 2021-03-06T03:39:32.96
GU.FIVI.HNE. ML:2.7 0.0062170045 0.28 AML other m 2021-03-06T03:39:33.15
GU.EQUI.HHE. ML:2.1 0.0012349999999999998 0.18 AML other m 2021-03-06T03:39:33.85
GU.EQUI.HHN. ML:1.6 0.00038232695 0.3008 AML other m 2021-03-06T03:39:35.73
IV.PLMA.HHN. ML:2.4 0.0019329315 0.12 AML other m 2021-03-06T03:39:36.09
IV.PLMA.HHE. ML:2.4 0.001625 0.18 AML other m 2021-03-06T03:39:36.12
MN.VLC.HHN. ML:1.7 0.00020337929999999997 0.1008 AML other m 2021-03-06T03:39:39.16
GU.GRAM.HHE. ML:2.4 0.00124 0.22 AML other m 2021-03-06T03:39:39.28
MN.VLC.HHE. ML:1.4 0.000122360125 0.24 AML other m 2021-03-06T03:39:39.79
GU.GRAM.HHN. ML:2.3 0.0010538129999999998 1.6608 AML other m 2021-03-06T03:39:39.01
MN.VLC.HNN. ML:1.7 0.0002202498 0.4992 AML other m 2021-03-06T03:39:41.19
GU.CARD.HHE. ML:2.0 0.0003164942 0.16 AML other m 2021-03-06T03:39:45.12
IV.MSSA.HHN. ML:2.0 0.00038449999999999997 0.1 AML other m 2021-03-06T03:39:45.24
MN.VLC.HNE. ML:1.5 0.000147282215 1.5392 AML other m 2021-03-06T03:39:45.78
IV.MSSA.HHE. ML:2.1 0.00045751685 0.1008 AML other m 2021-03-06T03:39:46.06
GU.CARD.HHN. ML:2.0 0.0003230677 0.1008 AML other m 2021-03-06T03:39:47.56
IV.BDI.HHN. ML:1.8 0.0001505069 0.1184 AML other m 2021-03-06T03:39:48.97
IV.BDI.HNN. ML:1.9 0.00020888385 1.7792 AML other m 2021-03-06T03:39:49.09
IV.PII.HHN. ML:2.0 0.00018292015000000001 0.2208 AML other m 2021-03-06T03:39:50.47
IV.PII.HHE. ML:2.2 0.00026297779999999996 1.6192 AML other m 2021-03-06T03:39:52.84
IV.BDI.HHE. ML:1.7 0.00012923262 0.1392 AML other m 2021-03-06T03:39:55.63
IV.BDI.HNE. ML:1.9 0.00019646229999999997 0.3104 AML other m 2021-03-06T03:39:56.02
GU.CANO.HHE. ML:2.3 0.0001125 0.42 AML other m 2021-03-06T03:40:12.32
GU.CANO.HHN. ML:2.2 0.00009290000000000001 0.9 AML other m 2021-03-06T03:40:12.01
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
Waveforms Seismic signals in miniseed + resp format Download