INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.8 on date 16-05-2018 and time 15:10:27 (Italy) in region 2 km W Zuccarello (SV)

A magnitude ML 0.8 earthquake occured in region: 2 km W Zuccarello (SV), on

  • 16-05-2018 13:10:27 (UTC)
  • 16-05-2018 15:10:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.11, 8.1 at 4 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 2 309 309
Castelbianco SV 2 330 639
Castelvecchio di Rocca Barbena SV 3 145 784
Arnasco SV 3 645 1429
Erli SV 4 245 1674
Vendone SV 4 388 2062
Cisano sul Neva SV 4 2085 4147
Onzo SV 5 219 4366
Nasino SV 6 207 4573
Ortovero SV 6 1586 6159
Balestrino SV 7 595 6754
Alto CN 8 128 6882
Villanova d'Albenga SV 8 2657 9539
Aquila d'Arroscia IM 8 166 9705
Garlenda SV 8 1254 10959
Ranzo IM 8 557 11516
Casanova Lerrone SV 9 749 12265
Toirano SV 9 2644 14909
Bardineto SV 10 756 15665
Boissano SV 10 2492 18157
Borghetto d'Arroscia IM 11 456 18613
Ceriale SV 11 5561 24174
Albenga SV 11 24213 48387
Caprauna CN 11 104 48491
Garessio CN 12 3244 51735
Borghetto Santo Spirito SV 12 4948 56683
Stellanello SV 12 808 57491
Testico SV 12 196 57687
Alassio SV 12 10934 68621
Vessalico IM 13 282 68903
Loano SV 13 11407 80310
Giustenice SV 14 977 81287
Calizzano SV 15 1475 82762
Cesio IM 15 283 83045
Armo IM 15 111 83156
Laigueglia SV 15 1810 84966
Villa Faraldi IM 15 444 85410
Magliolo SV 16 974 86384
Ormea CN 16 1617 88001
Pietra Ligure SV 16 8992 96993
Tovo San Giacomo SV 16 2582 99575
Pieve di Teco IM 16 1338 100913
Priola CN 17 701 101614
Caravonica IM 17 282 101896
Andora SV 17 7552 109448
Chiusanico IM 17 607 110055
Borgio Verezzi SV 18 2205 112260
Chiusavecchia IM 18 577 112837
Diano Arentino IM 18 722 113559
Pornassio IM 19 685 114244
Lucinasco IM 19 272 114516
Borgomaro IM 19 865 115381
Rialto SV 19 564 115945
Calice Ligure SV 19 1730 117675
Diano San Pietro IM 20 1145 118820
Aurigo IM 20 347 119167
Pontedassio IM 20 2323 121490
San Bartolomeo al Mare IM 20 3129 124619

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Savona (61345 inhabitants)
40 Km NE of Sanremo (54807 inhabitants)
54 Km SE of Cuneo (56081 inhabitants)
75 Km W of Genova (586655 inhabitants)
89 Km S of Asti (76202 inhabitants)
99 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
Rev 100 ML 0.8 2018-05-16
13:10:27
44.11 8.1 4 2018-05-16
13:17:38
Sala Sismica INGV-Roma 56920521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-16 13:10:27 ± 0.1
Latitude 44.11 ± 0.00
Longitude 8.10 ± 0.01
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56920521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 135
Circular confidence region, given by single value of horizontal uncertainty (meter) 490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 172
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 9
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
Epicentral distance of station farthest from the epicenter (degree) 0.24551
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 56920521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-16 13:17:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2018-05-16T13:10:36.13 0.3 undecidable manual S 306 0.2293 100 -0.23 70
IV.IMI.HHZ. 2018-05-16T13:10:36.89 0.3 undecidable manual S 217 0.2455 99 -0.08 72
GU.QLNO.HHZ. 2018-05-16T13:10:33.37 3.0 undecidable manual P 0
GU.CANO.HHZ. 2018-05-16T13:10:33.01 0.3 undecidable manual S 45 0.1421 106 -0.06 73
GU.MGRO.HHZ. 2018-05-16T13:10:32.48 0.3 undecidable manual P 253 0.2176 100 0.15 71
GU.GBOS.HHZ. 2018-05-16T13:10:32.83 0.3 undecidable manual P 306 0.2293 100 0.25 69
IV.IMI.HHZ. 2018-05-16T13:10:32.83 0.3 undecidable manual P 217 0.2455 99 -0.1 71
GU.CANO.HHZ. 2018-05-16T13:10:30.68 0.3 negative manual P 45 0.1421 106 0 74
GU.RORO.HHZ. 2018-05-16T13:10:29.17 0.3 undecidable manual S 284 0.0234 149 0 76
GU.RORO.HHZ. 2018-05-16T13:10:28.49 0.1 undecidable manual P 284 0.0234 149 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IMI.HHE. ML:0.6 2.328009E-5 0.2432 AML other m 2018-05-16T13:10:38.56
GU.RORO.HHE. ML:0 0.0003729868 0.096 AML other m 2018-05-16T13:10:29.29
GU.CANO.HHN. ML:0.9 8.924133E-5 0.2176 AML other m 2018-05-16T13:10:33.20
GU.CANO.HHE. ML:1.1 0.0001413254 0.3392 AML other m 2018-05-16T13:10:33.59
IV.IMI.HHN. ML:0.8 3.870572E-5 0.16 AML other m 2018-05-16T13:10:37.60
GU.RORO.HHN. ML:0 0.00032735295 0.16 AML other m 2018-05-16T13:10:29.85
GU.GBOS.HHE. ML:0.5 2.044416E-5 1.8624 AML other m 2018-05-16T13:10:37.13
GU.GBOS.HHN. ML:0.5 1.793071E-5 0.9792 AML other m 2018-05-16T13:10:36.51
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