Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 10-06-2021 and time 01:52:17 (Italy) in region 3 km NW Arenzano (GE)

A magnitude ML 1.3 earthquake occured in region: 3 km NW Arenzano (GE), on

  • 09-06-2021 23:52:17 (UTC)
  • 10-06-2021 01:52:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4270, 8.6720 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Arenzano GE 3 11519 11519
Cogoleto GE 5 9172 20691
Mele GE 7 2725 23416
Masone GE 9 3679 27095
Urbe SV 9 700 27795
Varazze SV 11 13251 41046
Tiglieto GE 12 546 41592
Campo Ligure GE 13 2955 44547
Celle Ligure SV 14 5237 49784
Stella SV 15 3009 52793
Rossiglione GE 15 2779 55572
Sassello SV 16 1777 57349
Albisola Superiore SV 16 10163 67512
Albissola Marina SV 17 5487 72999
Pontinvrea SV 19 847 73846
Ceranesi GE 20 3875 77721
Campomorone GE 20 6996 84717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Savona (61345 inhabitants)
21 Km W of Genova (586655 inhabitants)
54 Km S of Alessandria (93943 inhabitants)
64 Km SE of Asti (76202 inhabitants)
89 Km E of Cuneo (56081 inhabitants)
93 Km SW of Pavia (72576 inhabitants)
98 Km NE of Sanremo (54807 inhabitants)
99 Km W of La Spezia (93959 inhabitants)
100 Km S of Vigevano (63310 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 2021-06-09
23:52:17		 44.4273 8.6718 9 2021-12-29
11:12:11		 Bollettino Sismico Italiano INGV 92777951
Reviewed
Rev100 		ML 1.1 2021-06-09
23:52:17		 44.4243 8.6637 9 2021-06-10
00:00:55		 Sala Sismica INGV-Roma 90999341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-09 23:52:17 ± 0.08
Latitude 44.4273 ± 0.0063
Longitude 8.6718 ± 0.0050
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 92777951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 250
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.91731
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 92777951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-26 11:23:15

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 90999341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-10 00:00:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VARE.HHZ. 2021-06-09T23:53:04.40 3.0 undecidable manual S 0.85 0
GU.GBOS.HHZ. 2021-06-09T23:52:38.22 0.6 undecidable manual S 253 69.1752 50 -0.46 42
GU.ENR.HHZ. 2021-06-09T23:52:35.04 0.3 undecidable manual P 258 101.8203 50 0.33 61
FR.SAOF.HHE. 2021-06-09T23:52:35.72 0.6 undecidable manual P 242 101.5206 50 1.06 31
GU.RORO.HHZ. 2021-06-09T23:52:35.73 0.3 undecidable manual S 234 59.3961 50 -0.35 65
GU.ROTM.HHZ. 2021-06-09T23:52:34.60 0.3 undecidable manual S 332 53.2023 50 0.19 68
GU.GORR.HHN. 2021-06-09T23:52:33.29 0.6 undecidable manual S 68 53.0025 50 -1.07 33
GU.IMI.HHZ. 2021-06-09T23:52:32.60 0.6 undecidable manual P 227 84.4488 50 0.59 39
GU.CANO.HHZ. 2021-06-09T23:52:31.23 0.3 undecidable manual S 235 42.2244 50 -0.27 69
IV.BOB.HNE. 2021-06-09T23:52:30.55 0.3 undecidable manual P 58 71.9724 50 0.44 63
GU.GBOS.HHZ. 2021-06-09T23:52:29.68 0.3 undecidable manual P 253 69.1752 50 0.02 69
IV.MSSA.HHZ. 2021-06-09T23:52:29.67 0.3 undecidable manual P 100 68.1762 50 0.16 67
GU.RORO.HHZ. 2021-06-09T23:52:28.05 0.3 undecidable manual P 234 59.3961 50 -0.12 69
GU.ROTM.HHZ. 2021-06-09T23:52:27.30 0.3 undecidable manual P 332 53.2023 50 0.1 70
IV.QLNO.HHZ. 2021-06-09T23:52:27.57 0.3 undecidable manual S 246 28.2495 108 -0.1 73
GU.GORR.HHN. 2021-06-09T23:52:27.03 0.3 undecidable manual P 68 53.0025 50 -0.14 69
IV.SARZ.HHN. 2021-06-09T23:52:27.25 0.3 undecidable manual P 21 52.4031 50 0.17 69
IT.GNV.HGZ. 2021-06-09T23:52:25.68 0.6 undecidable manual S 89 20.6682 114 0.49 45
GU.CANO.HHZ. 2021-06-09T23:52:25.49 0.3 undecidable manual P 235 42.2244 50 -0.03 72
GU.RNCA.HHZ. 2021-06-09T23:52:25.58 0.3 undecidable manual S 78 22.6551 112 -0.26 71
GU.PCP.HHZ. 2021-06-09T23:52:23.57 0.3 undecidable manual S 322 16.0728 120 -0.22 73
IV.QLNO.HHZ. 2021-06-09T23:52:23.46 0.1 positive manual P 246 28.2495 108 0.15 96
GU.RNCA.HHZ. 2021-06-09T23:52:22.05 0.3 undecidable manual P 78 22.6551 112 -0.21 72
GU.PCP.HHZ. 2021-06-09T23:52:21.00 0.1 undecidable manual P 322 16.0728 120 -0.07 100
IT.GNV.HGZ. 2021-06-09T23:52:21.86 0.3 undecidable manual P 89 20.6682 114 -0.02 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RNCA.HHN. ML:1.1 0.00007545 0.16 AML other m 2021-06-09T23:52:25.98
GU.RNCA.HHE. ML:1.1 0.00008385 0.5 AML other m 2021-06-09T23:52:27.46
IV.QLNO.HHE. ML:1.0 0.0000558 1.46 AML other m 2021-06-09T23:52:27.78
IV.QLNO.HHN. ML:0.9 0.00004175 0.26 AML other m 2021-06-09T23:52:27.75
GU.CANO.HHE. ML:1.4 0.000074 0.86 AML other m 2021-06-09T23:52:31.49
GU.CANO.HHN. ML:1.4 0.00009054999999999999 0.22 AML other m 2021-06-09T23:52:32.12
GU.ROTM.HHN. ML:1.8 0.000152 0.22 AML other m 2021-06-09T23:52:35.21
GU.ROTM.HHE. ML:1.5 0.0000813 0.56 AML other m 2021-06-09T23:52:35.79
IV.MSSA.HHE. ML:1.2 0.000028699999999999996 0.66 AML other m 2021-06-09T23:52:39.98
IV.MSSA.HHN. ML:1.3 0.0000353 0.3 AML other m 2021-06-09T23:52:41.00
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