Earthquake with magnitude of ML 0.8 on date 30-09-2020 and time 17:00:42 (Italy) in region 1 km W Zuccarello (SV)

A magnitude ML 0.8 earthquake occured in region: 1 km W Zuccarello (SV), on

  • 30-09-2020 15:00:42 (UTC)
  • 30-09-2020 17:00:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.11, 8.11 at 5 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
Zuccarello SV 1 309 309
Castelvecchio di Rocca Barbena SV 2 145 454
Castelbianco SV 2 330 784
Erli SV 3 245 1029
Arnasco SV 4 645 1674
Cisano sul Neva SV 4 2085 3759
Vendone SV 5 388 4147
Balestrino SV 6 595 4742
Nasino SV 6 207 4949
Onzo SV 6 219 5168
Ortovero SV 6 1586 6754
Villanova d'Albenga SV 8 2657 9411
Alto CN 8 128 9539
Toirano SV 8 2644 12183
Aquila d'Arroscia IM 9 166 12349
Garlenda SV 9 1254 13603
Ranzo IM 9 557 14160
Bardineto SV 9 756 14916
Boissano SV 10 2492 17408
Casanova Lerrone SV 10 749 18157
Ceriale SV 10 5561 23718
Borghetto Santo Spirito SV 11 4948 28666
Albenga SV 11 24213 52879
Garessio CN 11 3244 56123
Borghetto d'Arroscia IM 12 456 56579
Caprauna CN 12 104 56683
Loano SV 13 11407 68090
Alassio SV 13 10934 79024
Stellanello SV 13 808 79832
Testico SV 13 196 80028
Giustenice SV 13 977 81005
Vessalico IM 14 282 81287
Calizzano SV 14 1475 82762
Magliolo SV 15 974 83736
Pietra Ligure SV 15 8992 92728
Tovo San Giacomo SV 15 2582 95310
Cesio IM 16 283 95593
Armo IM 16 111 95704
Laigueglia SV 16 1810 97514
Villa Faraldi IM 16 444 97958
Ormea CN 16 1617 99575
Priola CN 16 701 100276
Pieve di Teco IM 17 1338 101614
Borgio Verezzi SV 17 2205 103819
Andora SV 17 7552 111371
Caravonica IM 18 282 111653
Chiusanico IM 18 607 112260
Rialto SV 18 564 112824
Calice Ligure SV 18 1730 114554
Chiusavecchia IM 19 577 115131
Diano Arentino IM 19 722 115853
Pornassio IM 19 685 116538
Lucinasco IM 20 272 116810
Borgomaro IM 20 865 117675

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Savona (61345 inhabitants)
41 Km NE of Sanremo (54807 inhabitants)
54 Km SE of Cuneo (56081 inhabitants)
74 Km W of Genova (586655 inhabitants)
88 Km S of Asti (76202 inhabitants)
98 Km SW of Alessandria (93943 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 0.8 2020-09-30
15:00:42
44.11 8.11 5 2020-09-30
15:06:37
Sala Sismica INGV-Roma 83391001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 15:00:42 ± 0.08
Latitude 44.11 ± 0.00
Longitude 8.11 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83391001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 430
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 141
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.81119
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 83391001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 15:06:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.PZZ.HHE. 2020-09-30T15:00:59.06 1.0 undecidable manual P 300 0.8112 50 0.61 19
GU.ENR.HHZ. 2020-09-30T15:00:53.30 0.6 negative manual P 283 0.5054 50 0.09 47
GU.PCP.HHZ. 2020-09-30T15:00:53.17 1.0 undecidable manual P 36 0.5324 50 -0.5 22
IV.IMI.HHZ. 2020-09-30T15:00:52.16 0.6 undecidable manual S 217 0.2527 100 -0.06 50
GU.GBOS.HHZ. 2020-09-30T15:00:51.18 0.6 undecidable manual S 304 0.2311 100 -0.22 49
IV.QLNO.HHZ. 2020-09-30T15:00:48.30 0.6 positive manual P 39 0.2734 99 -0.2 48
GU.GBOS.HHZ. 2020-09-30T15:00:47.75 1.0 undecidable manual P 304 0.2311 100 0.18 25
IV.IMI.HHZ. 2020-09-30T15:00:47.98 0.1 positive manual P 217 0.2527 100 -0.06 100
GU.MGRO.HHZ. 2020-09-30T15:00:47.49 1.0 positive manual P 252 0.2248 101 0.05 25
GU.CANO.HHZ. 2020-09-30T15:00:47.71 0.6 undecidable manual S 44 0.134 108 -0.06 51
GU.CANO.HHZ. 2020-09-30T15:00:45.66 0.1 undecidable manual P 44 0.134 108 0.18 100
GU.RORO.HHZ. 2020-09-30T15:00:44.37 0.6 undecidable manual S 271 0.0288 146 0.04 52
GU.RORO.HHZ. 2020-09-30T15:00:43.56 0.6 undecidable manual P 271 0.0288 146 0.06 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:0.9 9.605E-5 0.58 AML other m 2020-09-30T15:00:48.62
GU.CANO.HHN. ML:0.9 8.755E-5 0.14 AML other m 2020-09-30T15:00:48.69
IV.IMI.HHN. ML:1 4.9E-5 0.8 AML other m 2020-09-30T15:00:52.74
IV.IMI.HHE. ML:0.9 3.855E-5 0.88 AML other m 2020-09-30T15:00:52.83
GU.MGRO.HHN. ML:0.9 5.66E-5 1.58 AML other m 2020-09-30T15:00:53.00
GU.MGRO.HHE. ML:1 5.98E-5 0.44 AML other m 2020-09-30T15:00:53.42
GU.GBOS.HHN. ML:0.4 1.3995425E-5 0.256 AML other m 2020-09-30T15:00:52.67
GU.GBOS.HHE. ML:0.4 1.537435E-5 0.1152 AML other m 2020-09-30T15:00:52.04
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