Earthquake with magnitude of ML 2.1 on date 20-11-2023 and time 20:58:07 (UTC) in region 4 km NE Zignago (SP)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Zignago (SP), on

  • 20-11-2023 20:58:07 (UTC)
  • 20-11-2023 21:58:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3060, 9.7690 at 7 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
Zignago SP 4 532 532
Zeri MS 5 1094 1626
Rocchetta di Vara SP 6 703 2329
Sesta Godano SP 7 1377 3706
Brugnato SP 8 1270 4976
Calice al Cornoviglio SP 9 1138 6114
Borghetto di Vara SP 10 938 7052
Mulazzo MS 11 2424 9476
Carrodano SP 11 503 9979
Pontremoli MS 12 7357 17336
Beverino SP 12 2429 19765
Carro SP 13 545 20310
Filattiera MS 14 2309 22619
Pignone SP 14 565 23184
Villafranca in Lunigiana MS 15 4770 27954
Varese Ligure SP 16 2059 30013
Tresana MS 16 2044 32057
Bolano SP 16 7813 39870
Riccò del Golfo di Spezia SP 17 3698 43568
Albareto PR 17 2156 45724
Follo SP 18 6337 52061
Podenzana MS 18 2180 54241
Bagnone MS 18 1887 56128
Maissana SP 19 616 56744
Aulla MS 19 11263 68007
Levanto SP 19 5499 73506
Santo Stefano di Magra SP 20 9360 82866
Monterosso al Mare SP 20 1464 84330
Bonassola SP 20 862 85192
Vernazza SP 20 848 86040

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km N of La Spezia (93959 inhabitants)
36 Km NW of Carrara (63133 inhabitants)
42 Km NW of Massa (69479 inhabitants)
62 Km NW of Viareggio (62467 inhabitants)
67 Km E of Genova (586655 inhabitants)
71 Km SW of Parma (192836 inhabitants)
78 Km NW of Lucca (89046 inhabitants)
81 Km SW of Reggio nell'Emilia (171345 inhabitants)
83 Km NW of Pisa (89158 inhabitants)
83 Km S of Piacenza (102191 inhabitants)
94 Km NW of Livorno (159219 inhabitants)
94 Km S of Cremona (71901 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
Reviewed
Rev100
ML 2.1 2023-11-20
20:58:07
44.3058 9.7688 7 2023-11-20
21:08:34
Sala Sismica INGV-Roma 123292951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-20 20:58:07 ± 0.12
Latitude 44.3058 ± 0.0081
Longitude 9.7688 ± 0.0088
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123292951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 704
Semi-minor axis of confidence ellipse (meter) 588
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.05580
Number of stations at which the event was observed 48
Number of stations from which data was used for origin computation 23
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 123292951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-20 21:08:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2023-11-20T20:59:26.20 3.0 undecidable manual Sg 6.24 0
IV.CRTC.HHZ. 2023-11-20T20:59:25.04 3.0 undecidable manual Sg 6.31 0
IV.AGLI.HHZ. 2023-11-20T20:59:04.88 3.0 undecidable manual Pg 5.25 0
IV.ARVD.HHZ. 2023-11-20T20:58:55.77 3.0 undecidable manual Pg 6.33 0
IV.ATFO.HHZ. 2023-11-20T20:58:48.41 3.0 negative manual Pn 1.68 0
ST.ZIAN.EHZ. 2023-11-20T20:58:47.44 3.0 undecidable manual Pn -0.67 0
IV.MPAG.EHZ. 2023-11-20T20:58:45.44 3.0 positive manual Pn -1.69 0
GU.TRAV.HHZ. 2023-11-20T20:58:44.10 3.0 positive manual Pg 2.89 0
ST.PANI.EHZ. 2023-11-20T20:58:44.15 3.0 negative manual Pn -0.17 0
ST.DOSS.HHZ. 2023-11-20T20:58:41.23 3.0 positive manual Pn -0.38 0
ST.RONC.EHZ. 2023-11-20T20:58:41.08 3.0 negative manual Pg 0.75 0
ST.VARA.EHZ. 2023-11-20T20:58:40.51 3.0 negative manual Pg 1 0
SI.LUSI.HHZ. 2023-11-20T20:58:40.39 3.0 negative manual Pn -0.95 0
IV.ZOVE.EHZ. 2023-11-20T20:58:39.81 3.0 positive manual Pg 0.77 0
IV.ROVR.HHZ. 2023-11-20T20:58:38.15 3.0 positive manual Pn -0.19 0
RD.PGF.BHZ. 2023-11-20T20:58:38.58 3.0 negative manual Pn -2.28 0
IV.CRE.HHZ. 2023-11-20T20:58:38.47 3.0 positive manual Pn -1.18 0
IV.MAGA.HHZ. 2023-11-20T20:58:37.26 3.0 positive manual Pn -0.49 0
FR.SAOF.HHZ.00 2023-11-20T20:58:36.24 3.0 negative manual Pn -1.42 0
IV.MDI.HHZ. 2023-11-20T20:58:36.63 3.0 positive manual P 0.77 0
GU.GBOS.HHZ. 2023-11-20T20:58:34.97 3.0 positive manual P 0.6 0
GU.IMI.HHZ. 2023-11-20T20:58:32.88 3.0 undecidable manual P -1.78 0
IV.SEI.HHZ. 2023-11-20T20:58:30.95 3.0 negative manual P -1.21 0
GU.RORO.HHZ. 2023-11-20T20:58:30.09 3.0 positive manual P -2.25 0
IV.MOCL.EHZ. 2023-11-20T20:58:29.07 0.6 undecidable manual P 106 117.1938 50 1.05 31
GU.CANO.HHZ. 2023-11-20T20:58:28.20 3.0 undecidable manual P -2.05 0
IV.CRMI.HHZ. 2023-11-20T20:58:27.91 0.3 undecidable manual P 120 111.8991 50 0.7 54
IV.BOB.HHZ. 2023-11-20T20:58:26.14 0.6 undecidable manual S 334 57.1983 50 -0.55 43
GU.PCP.HHZ. 2023-11-20T20:58:25.61 1.0 negative manual P 286 100.4217 50 0.18 22
MN.VLC.HHZ. 2023-11-20T20:58:24.33 0.6 undecidable manual S 108 51.7038 50 -0.89 38
IV.PII.HHZ. 2023-11-20T20:58:23.68 0.3 negative manual P 137 88.5447 50 0.08 68
GU.GORR.HHZ. 2023-11-20T20:58:23.84 0.6 undecidable manual S 312 50.4162 50 -1.03 36
GU.MAIM.HHZ. 2023-11-20T20:58:21.05 0.6 negative manual P 127 72.1722 50 -0.04 47
IV.PRMA.HHE. 2023-11-20T20:58:21.34 0.3 undecidable manual P 40 66.5778 50 1.13 49
GU.GSCL.HHZ. 2023-11-20T20:58:20.22 0.6 undecidable manual P 85 65.1903 50 0.22 46
4P.IT07A.HHZ. 2023-11-20T20:58:20.45 0.1 positive manual P 5 63.2922 50 0.75 78
IT.GNV.HGN. 2023-11-20T20:58:20.46 0.6 undecidable manual P 282 67.7766 50 0.05 47
GU.RNCA.HHZ. 2023-11-20T20:58:20.32 0.6 positive manual P 286 67.377 50 -0.02 48
IV.BDI.HHZ. 2023-11-20T20:58:20.87 0.1 positive manual P 112 71.0733 50 -0.04 94
GU.EQUI.HHZ. 2023-11-20T20:58:19.23 0.6 undecidable manual S 117 34.2435 101 -0.83 40
GU.CARD.HHZ. 2023-11-20T20:58:19.83 0.1 undecidable manual P 118 64.6908 50 -0.1 94
IV.NEVI.HNE. 2023-11-20T20:58:18.71 0.3 undecidable manual P 54 53.2023 50 0.56 65
IV.ERBM.EHE. 2023-11-20T20:58:18.26 0.3 undecidable manual P 76 52.6029 50 0.19 71
GU.GRAM.HHZ. 2023-11-20T20:58:18.38 0.6 undecidable manual S 49 31.1466 102 -0.62 44
GU.FIVI.HNZ. 2023-11-20T20:58:18.08 0.6 undecidable manual S 104 29.3484 103 -0.33 48
IV.BOB.HHZ. 2023-11-20T20:58:18.33 0.3 undecidable manual P 334 57.1983 50 -0.45 66
IV.PLMA.HHZ. 2023-11-20T20:58:17.93 0.6 undecidable manual S 167 29.1486 103 -0.41 47
GU.GORR.HHZ. 2023-11-20T20:58:17.03 0.1 negative manual P 312 50.4162 50 -0.69 82
MN.VLC.HHZ. 2023-11-20T20:58:17.95 0.3 undecidable manual P 108 51.7038 50 0.03 73
GU.SARM.EHE. 2023-11-20T20:58:17.70 0.3 undecidable manual P 105 52.0035 50 -0.27 70
IV.MSSA.HHZ. 2023-11-20T20:58:15.39 0.6 undecidable manual S 273 19.9689 108 0.13 51
IV.PLMA.HHZ. 2023-11-20T20:58:14.14 0.3 undecidable manual P 167 29.1486 103 0.19 74
GU.GRAM.HHZ. 2023-11-20T20:58:14.24 0.1 positive manual P 49 31.1466 102 -0.1 100
GU.FIVI.HNZ. 2023-11-20T20:58:14.29 0.3 undecidable manual P 104 29.3484 103 0.29 72
GU.EQUI.HHZ. 2023-11-20T20:58:14.81 0.6 undecidable manual P 117 34.2435 101 -0.13 49
IV.MSSA.HHZ. 2023-11-20T20:58:12.59 0.3 undecidable manual P 273 19.9689 108 0.42 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GRAM.HHE. ML:2.4 0.0012000000000000001 0.42 AML other m 2023-11-20T20:58:18.77
IV.PLMA.HHE. ML:2.0 0.0005945 0.22 AML other m 2023-11-20T20:58:19.17
GU.EQUI.HHE. ML:1.6 0.0001495 0.24 AML other m 2023-11-20T20:58:19.25
IV.PLMA.HHN. ML:2.1 0.0007130000000000001 1.2 AML other m 2023-11-20T20:58:19.39
GU.GRAM.HHN. ML:2.4 0.0011005000000000001 0.3 AML other m 2023-11-20T20:58:19.54
GU.EQUI.HHN. ML:1.8 0.0002395 1.34 AML other m 2023-11-20T20:58:20.11
MN.VLC.HHE. ML:1.8 0.0001615 1.12 AML other m 2023-11-20T20:58:24.19
MN.VLC.HHN. ML:1.7 0.0001395 1.06 AML other m 2023-11-20T20:58:24.95
GU.GORR.HHN. ML:2.1 0.0003665 0.76 AML other m 2023-11-20T20:58:25.48
IV.BOB.HHE. ML:2.2 0.0003355 0.2 AML other m 2023-11-20T20:58:26.65
GU.GORR.HHE. ML:2.0 0.00027 0.48 AML other m 2023-11-20T20:58:27.09
IV.BOB.HNN. ML:2.2 0.000367 0.84 AML other m 2023-11-20T20:58:27.44
IV.BOB.HHN. ML:2.2 0.0003595 0.84 AML other m 2023-11-20T20:58:27.86
IV.BOB.HNE. ML:2.2 0.0003075 0.68 AML other m 2023-11-20T20:58:30.09
GU.GSCL.HHE. ML:2.1 0.00021349999999999999 0.22 AML other m 2023-11-20T20:58:30.24
GU.MAIM.HHN. ML:1.8 0.0000974 1.2 AML other m 2023-11-20T20:58:30.36
IV.BDI.HHN. ML:2.0 0.0001795 1.66 AML other m 2023-11-20T20:58:31.90
4P.IT07A.HHN. ML:2.4 0.0005055 0.26 AML other m 2023-11-20T20:58:31.19
GU.RNCA.HHE. ML:2.4 0.00046950000000000003 0.1 AML other m 2023-11-20T20:58:31.83
IV.BDI.HHE. ML:2.0 0.000156 1.58 AML other m 2023-11-20T20:58:31.88
GU.RNCA.HHN. ML:2.0 0.0002 0.08 AML other m 2023-11-20T20:58:32.29
GU.MAIM.HHE. ML:1.9 0.0001275 0.32 AML other m 2023-11-20T20:58:32.49
GU.GSCL.HHN. ML:2.0 0.000168 1.42 AML other m 2023-11-20T20:58:34.83
4P.IT07A.HHE. ML:2.4 0.0004665 1.56 AML other m 2023-11-20T20:58:35.14
IV.PII.HHE. ML:2.1 0.00016149999999999997 0.66 AML other m 2023-11-20T20:58:37.70
IV.PII.HHN. ML:2.2 0.00019 0.56 AML other m 2023-11-20T20:58:37.38
IV.ROVR.HHE. ML:2.1 0.0000486 0.3 AML other m 2023-11-20T20:58:40.44
IV.CRMI.HHE. ML:1.6 0.000032500000000000004 0.72 AML other m 2023-11-20T20:58:41.52
IV.CRMI.HHN. ML:1.7 0.00004435 0.8 AML other m 2023-11-20T20:58:42.43
GU.CANO.HHN. ML:2.7 0.0003485 0.24 AML other m 2023-11-20T20:58:44.79
GU.CANO.HHE. ML:2.7 0.00034550000000000005 0.72 AML other m 2023-11-20T20:58:45.59
IV.MOCL.EHN. ML:1.8 0.000056099999999999995 1.32 AML other m 2023-11-20T20:58:45.11
IV.MOCL.EHE. ML:2.1 0.00008885 0.34 AML other m 2023-11-20T20:58:46.34
GU.RORO.HHE. ML:2.1 0.00006965 0.14 AML other m 2023-11-20T20:58:48.32
GU.RORO.HHN. ML:2.2 0.00008515000000000001 0.2 AML other m 2023-11-20T20:58:48.40
IV.SEI.HHE. ML:2.1 0.0000775 0.38 AML other m 2023-11-20T20:58:50.46
IV.MPAG.EHN. ML:2.2 0.00003105 0.5 AML other m 2023-11-20T20:58:50.90
IV.ZOVE.HNE. ML:3.2 0.0005126000000000001 0.42 AML other m 2023-11-20T20:58:50.88
IV.ZOVE.HNN. ML:3.2 0.00062 0.42 AML other m 2023-11-20T20:58:50.91
GU.GBOS.HHE. ML:1.8 0.0000281 1.24 AML other m 2023-11-20T20:58:53.79
GU.GBOS.HHN. ML:1.8 0.0000295 1.7 AML other m 2023-11-20T20:58:55.10
IV.MDI.HHE. ML:2.2 0.00007055000000000001 0.38 AML other m 2023-11-20T20:58:57.39
IV.MDI.HHN. ML:2.2 0.00007465 0.34 AML other m 2023-11-20T20:58:58.96
IV.SEI.HHN. ML:2.3 0.000127 0.48 AML other m 2023-11-20T20:58:59.50
IV.ROVR.HHN. ML:2.4 0.00008455 1.4 AML other m 2023-11-20T20:59:05.19
IV.MAGA.HHE. ML:2.4 0.00009355 1.62 AML other m 2023-11-20T20:59:06.87
IV.MAGA.HHN. ML:2.1 0.00004745 1.02 AML other m 2023-11-20T20:59:08.64
SI.LUSI.HHE. ML:2.1 0.0000374 0.44 AML other m 2023-11-20T20:59:11.53
ST.DOSS.HHE. ML:2.0 0.000029949999999999996 0.54 AML other m 2023-11-20T20:59:11.43
ST.DOSS.HHN. ML:2.1 0.00003565 0.48 AML other m 2023-11-20T20:59:13.69
SI.LUSI.HHN. ML:2.3 0.000056099999999999995 1.22 AML other m 2023-11-20T20:59:14.26
IV.MPAG.EHE. ML:2.1 0.00002305 0.72 AML other m 2023-11-20T20:59:19.33
ST.PANI.HNE. ML:2.9 0.000189 0.54 AML other m 2023-11-20T20:59:34.96
ST.PANI.HNN. ML:3.3 0.0005295 0.42 AML other m 2023-11-20T20:59:36.63
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