Earthquake with magnitude of ML 1.4 on date 09-10-2020 and time 00:30:12 (UTC) in region 3 km S Cabella Ligure (AL)

A magnitude ML 1.4 earthquake occured in region: 3 km S Cabella Ligure (AL), on

  • 09-10-2020 00:30:12 (UTC)
  • 09-10-2020 02:30:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.64, 9.11 at 20 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
Cabella Ligure AL 4 528 528
Mongiardino Ligure AL 4 165 693
Carrega Ligure AL 6 84 777
Albera Ligure AL 7 325 1102
Vobbia GE 7 409 1511
Roccaforte Ligure AL 7 136 1647
Rocchetta Ligure AL 8 200 1847
Crocefieschi GE 9 548 2395
Cantalupo Ligure AL 10 527 2922
Valbrevenna GE 10 798 3720
Propata GE 11 142 3862
Isola del Cantone GE 12 1540 5402
Rondanina GE 13 62 5464
Ronco Scrivia GE 13 4417 9881
Savignone GE 13 3205 13086
Grondona AL 13 510 13596
Fabbrica Curone AL 13 656 14252
Fascia GE 13 81 14333
Montacuto AL 14 278 14611
Torriglia GE 14 2311 16922
Zerba PC 15 77 16999
Dernice AL 15 185 17184
Casella GE 15 3144 20328
Montoggio GE 15 2067 22395
Busalla GE 15 5563 27958
Gorreto GE 15 97 28055
Rovegno GE 15 554 28609
Borghetto di Borbera AL 16 1966 30575
San Sebastiano Curone AL 16 583 31158
Montebruno GE 17 240 31398
Gremiasco AL 17 324 31722
Brallo di Pregola PV 17 599 32321
Garbagna AL 18 696 33017
Santa Margherita di Staffora PV 18 473 33490
Ottone PC 18 516 34006
Arquata Scrivia AL 18 6409 40415
Vignole Borbera AL 19 2182 42597
Fontanigorda GE 19 277 42874
Fraconalto AL 19 336 43210
Brignano-Frascata AL 20 456 43666
Cerignale PC 20 127 43793
Davagna GE 20 1884 45677
Mignanego GE 20 3675 49352

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Genova (586655 inhabitants)
49 Km SE of Alessandria (93943 inhabitants)
60 Km S of Pavia (72576 inhabitants)
62 Km NE of Savona (61345 inhabitants)
65 Km SW of Piacenza (102191 inhabitants)
77 Km E of Asti (76202 inhabitants)
78 Km S of Vigevano (63310 inhabitants)
83 Km NW of La Spezia (93959 inhabitants)
91 Km SW of Cremona (71901 inhabitants)
92 Km S of Milano (1345851 inhabitants)
97 Km SE of Novara (104380 inhabitants)
98 Km W of Parma (192836 inhabitants)
99 Km S of Rho (50434 inhabitants)
100 Km S of Sesto San Giovanni (81608 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2020-10-09
00:30:12
44.64 9.11 21 2020-10-09
00:37:13
Sala Sismica INGV-Roma 83630561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-09 00:30:12 ± 0.44
Latitude 44.64 ± 0.01
Longitude 9.11 ± 0.02
Depth (km) 21 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83630561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2215
Semi-minor axis of confidence ellipse (meter) 916
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 127
Circular confidence region, given by single value of horizontal uncertainty (meter) 2210
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41369
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 83630561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-09 00:37:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2020-10-09T00:32:02.08 3.0 undecidable manual Sn -1.76 0
IV.MTMR.EHZ. 2020-10-09T00:31:56.27 3.0 undecidable manual Pg 16.24 0
IV.CMPR.HHZ. 2020-10-09T00:31:47.15 3.0 undecidable manual Pn -0.85 0
IV.NARO.HHZ. 2020-10-09T00:31:37.21 3.0 undecidable manual Sn 3.08 0
IV.FRON.EHZ. 2020-10-09T00:31:35.94 3.0 undecidable manual Sn -1.46 0
IV.RAVA.EHZ. 2020-10-09T00:31:03.64 3.0 undecidable manual Sg 0.13 0
GU.GRAM.HHZ. 2020-10-09T00:30:39.35 3.0 undecidable manual S -2.69 0
GU.GRAM.HHZ. 2020-10-09T00:30:27.39 3.0 undecidable manual P -2.19 0
GU.PCP.HHZ. 2020-10-09T00:30:27.73 0.1 undecidable manual S 256 0.4137 106 -0.28 95
GU.RNCA.HHZ. 2020-10-09T00:30:22.52 0.1 undecidable manual S 213 0.2059 124 0.16 99
GU.PCP.HHZ. 2020-10-09T00:30:21.67 0.3 positive manual P 256 0.4137 106 0.03 73
GU.GORR.HHZ. 2020-10-09T00:30:20.64 0.1 undecidable manual S 106 0.1358 138 -0.16 100
IV.SARZ.HHZ. 2020-10-09T00:30:19.43 0.3 negative manual P 328 0.2626 117 0.21 73
GU.RNCA.HHZ. 2020-10-09T00:30:18.62 1.0 positive manual P 213 0.2059 124 0.24 24
GU.GORR.HHZ. 2020-10-09T00:30:17.60 0.6 undecidable manual P 106 0.1358 138 0.12 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GORR.HHE. ML:1.6 0.00025 0.44 AML other m 2020-10-09T00:30:21.30
GU.GORR.HHN. ML:1.6 0.00023 0.8 AML other m 2020-10-09T00:30:21.02
GU.RNCA.HHE. ML:1.3 9.795E-5 0.12 AML other m 2020-10-09T00:30:22.80
GU.RNCA.HHN. ML:1 5.41E-5 1.76 AML other m 2020-10-09T00:30:22.00
IV.SARZ.HHN. ML:1.3 8.11E-5 0.76 AML other m 2020-10-09T00:30:30.55
IV.SARZ.HHE. ML:1.4 9.375E-5 1.24 AML other m 2020-10-09T00:30:35.05
IV.RAVA.EHN. ML:2.5 0.000157 0.22 AML other m 2020-10-09T00:31:06.80
IV.RAVA.EHE. ML:2.4 0.00011885 1.2 AML other m 2020-10-09T00:31:07.79
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download