Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 09-10-2021 and time 21:00:03 (Italy) in region 3 km S Calice al Cornoviglio (SP)

A magnitude ML 1.3 earthquake occured in region: 3 km S Calice al Cornoviglio (SP), on

  • 09-10-2021 19:00:03 (UTC)
  • 09-10-2021 21:00:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2140, 9.8440 at 10 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
Calice al Cornoviglio SP 3 1138 1138
Bolano SP 5 7813 8951
Follo SP 6 6337 15288
Beverino SP 6 2429 17717
Podenzana MS 8 2180 19897
Santo Stefano di Magra SP 8 9360 29257
Rocchetta di Vara SP 8 703 29960
Vezzano Ligure SP 9 7356 37316
Riccò del Golfo di Spezia SP 9 3698 41014
Tresana MS 9 2044 43058
Borghetto di Vara SP 10 938 43996
Brugnato SP 10 1270 45266
Aulla MS 10 11263 56529
Pignone SP 10 565 57094
Zignago SP 11 532 57626
La Spezia SP 12 93959 151585
Arcola SP 12 10607 162192
Villafranca in Lunigiana MS 12 4770 166962
Mulazzo MS 13 2424 169386
Sarzana SP 15 21976 191362
Filattiera MS 15 2309 193671
Riomaggiore SP 15 1576 195247
Carrodano SP 15 503 195750
Vernazza SP 15 848 196598
Sesta Godano SP 16 1377 197975
Lerici SP 16 10228 208203
Fosdinovo MS 17 4883 213086
Bagnone MS 17 1887 214973
Licciana Nardi MS 17 4949 219922
Monterosso al Mare SP 17 1464 221386
Zeri MS 17 1094 222480
Portovenere SP 18 3630 226110
Pontremoli MS 19 7357 233467
Ameglia SP 19 4365 237832
Castelnuovo Magra SP 19 8415 246247
Levanto SP 19 5499 251746
Carro SP 20 545 252291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of La Spezia (93959 inhabitants)
25 Km NW of Carrara (63133 inhabitants)
31 Km NW of Massa (69479 inhabitants)
50 Km NW of Viareggio (62467 inhabitants)
67 Km NW of Lucca (89046 inhabitants)
71 Km NW of Pisa (89158 inhabitants)
76 Km E of Genova (586655 inhabitants)
76 Km SW of Parma (192836 inhabitants)
82 Km NW of Livorno (159219 inhabitants)
83 Km SW of Reggio nell'Emilia (171345 inhabitants)
91 Km W of Pistoia (90315 inhabitants)
94 Km S of Piacenza (102191 inhabitants)
99 Km W of Modena (184973 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 1.3 2021-10-09
19:00:03		 44.2138 9.8442 10 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99440311
Reviewed
Rev100 		ML 1.4 2021-10-09
19:00:03		 44.2173 9.8353 10 2021-10-09
19:06:22		 Sala Sismica INGV-Roma 96390071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-09 19:00:03 ± 0.1
Latitude 44.2138 ± 0.0072
Longitude 9.8442 ± 0.0075
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99440311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 658
Semi-minor axis of confidence ellipse (meter) 464
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 18
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67629
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 99440311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-07 15:29:59

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96390071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-09 19:06:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ICAI.EHZ. 2021-10-09T19:01:29.19 3.0 negative manual Pg 13.14 0
IV.FREG.EHZ. 2021-10-09T19:01:16.93 3.0 undecidable manual Sn -0.14 0
IV.SACS.HHZ. 2021-10-09T19:01:07.68 3.0 undecidable manual Sg 0.47 0
IV.MF5.EHZ. 2021-10-09T19:01:01.61 3.0 undecidable manual Pg 10.01 0
IV.MRGE.HHZ. 2021-10-09T19:00:49.42 3.0 undecidable manual Pg 0.6 0
IV.PE3.EHZ. 2021-10-09T19:00:41.83 3.0 positive manual Pg 3.01 0
GU.POPM.HHZ. 2021-10-09T19:00:25.74 0.6 undecidable manual S 104 75.0693 50 -0.17 31
GU.MAIM.HHZ. 2021-10-09T19:00:21.54 0.6 undecidable manual S 123 61.494 50 -0.75 23
GU.SARM.EHN. 2021-10-09T19:00:16.98 0.6 undecidable manual S 94 44.4222 50 -0.75 23
GU.POPM.HHZ. 2021-10-09T19:00:16.86 0.3 undecidable manual P 104 75.0693 50 0.58 67
IV.BOB.HNE. 2021-10-09T19:00:15.75 0.3 undecidable manual P 333 68.9754 50 0.4 64
GU.MAIM.HHZ. 2021-10-09T19:00:14.26 0.3 undecidable manual P 123 61.494 50 0.07 61
GU.GORR.HHN. 2021-10-09T19:00:14.04 0.3 undecidable manual P 315 61.7937 50 -0.19 52
GU.CARD.HHZ. 2021-10-09T19:00:13.03 0.3 undecidable manual P 112 54.9006 50 -0.15 56
IV.MSSA.HHZ. 2021-10-09T19:00:12.85 0.6 undecidable manual S 294 28.3494 50 -0.59 41
GU.EQUI.HHZ. 2021-10-09T19:00:11.68 0.6 undecidable manual S 102 25.1526 111 -0.8 42
GU.SARM.EHN. 2021-10-09T19:00:11.56 0.3 undecidable manual P 94 44.4222 50 0 60
GU.FIVI.HNZ. 2021-10-09T19:00:11.61 0.6 undecidable manual S 83 22.6551 113 -0.08 51
GU.GRAM.HHZ. 2021-10-09T19:00:10.38 0.1 positive manual P 30 35.3424 50 0.22 93
IV.PLMA.HHZ. 2021-10-09T19:00:10.07 0.6 undecidable manual S 178 18.1707 118 -0.22 50
IV.MSSA.HHZ. 2021-10-09T19:00:09.04 0.1 undecidable manual P 294 28.3494 50 -0.04 95
GU.FIVI.HNZ. 2021-10-09T19:00:08.34 0.1 undecidable manual P 83 22.6551 113 0.27 97
GU.EQUI.HHZ. 2021-10-09T19:00:08.56 0.1 undecidable manual P 102 25.1526 111 0.04 100
IV.PLMA.HHZ. 2021-10-09T19:00:07.46 0.1 undecidable manual P 178 18.1707 118 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.EQUI.HHE. ML:1.0 0.00005432083 0.2432 AML other m 2021-10-09T19:00:11.87
GU.EQUI.HHN. ML:0.6 0.0000272049505 0.0768 AML other m 2021-10-09T19:00:12.31
GU.GRAM.HHE. ML:1.1 0.000051753549999999995 0.0928 AML other m 2021-10-09T19:00:15.27
GU.GRAM.HHN. ML:1.0 0.00004695917500000001 0.3456 AML other m 2021-10-09T19:00:15.80
IV.BDI.HHN. ML:1.4 0.000056618034999999995 0.0512 AML other m 2021-10-09T19:00:19.40
IV.BDI.HHE. ML:1.6 0.0000829 0.06 AML other m 2021-10-09T19:00:21.01
GU.POPM.HHE. ML:1.2 0.0000244708235 1.6032 AML other m 2021-10-09T19:00:29.96
GU.POPM.HHN. ML:1.3 0.000031930435 0.2048 AML other m 2021-10-09T19:00:29.19
GU.MAIM.HHN. ML:1.2 0.00003540649 0.6048 AML other m 2021-10-09T19:00:30.56
GU.MAIM.HHE. ML:1.4 0.00004529582 0.1184 AML other m 2021-10-09T19:00:34.46
IV.BDI.HNN. ML:1.8 0.000107739215 0.6144 AML other m 2021-10-09T19:00:35.73
IV.BDI.HNE. ML:1.7 0.00009902632999999999 0.7296 AML other m 2021-10-09T19:00:36.35
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