Earthquake with magnitude of ML 0.7 on date 18-11-2021 and time 16:50:15 (Italy) in region Zuccarello (SV)

A magnitude ML 0.7 earthquake occured in region: Zuccarello (SV), on

  • 18-11-2021 15:50:15 (UTC)
  • 18-11-2021 16:50:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.111, 8.116 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 0 309 309
Castelvecchio di Rocca Barbena SV 2 145 454
Erli SV 3 245 699
Castelbianco SV 3 330 1029
Cisano sul Neva SV 4 2085 3114
Arnasco SV 4 645 3759
Balestrino SV 5 595 4354
Vendone SV 5 388 4742
Ortovero SV 7 1586 6328
Onzo SV 7 219 6547
Nasino SV 7 207 6754
Villanova d'Albenga SV 8 2657 9411
Toirano SV 8 2644 12055
Garlenda SV 9 1254 13309
Alto CN 9 128 13437
Boissano SV 9 2492 15929
Aquila d'Arroscia IM 9 166 16095
Bardineto SV 9 756 16851
Ceriale SV 10 5561 22412
Ranzo IM 10 557 22969
Casanova Lerrone SV 10 749 23718
Borghetto Santo Spirito SV 10 4948 28666
Albenga SV 10 24213 52879
Garessio CN 12 3244 56123
Loano SV 12 11407 67530
Borghetto d'Arroscia IM 12 456 67986
Alassio SV 12 10934 78920
Giustenice SV 13 977 79897
Caprauna CN 13 104 80001
Stellanello SV 13 808 80809
Testico SV 13 196 81005
Calizzano SV 14 1475 82480
Vessalico IM 14 282 82762
Pietra Ligure SV 14 8992 91754
Magliolo SV 14 974 92728
Tovo San Giacomo SV 14 2582 95310
Laigueglia SV 16 1810 97120
Cesio IM 16 283 97403
Villa Faraldi IM 16 444 97847
Borgio Verezzi SV 16 2205 100052
Armo IM 16 111 100163
Priola CN 17 701 100864
Ormea CN 17 1617 102481
Andora SV 17 7552 110033
Pieve di Teco IM 17 1338 111371
Rialto SV 18 564 111935
Calice Ligure SV 18 1730 113665
Chiusanico IM 18 607 114272
Caravonica IM 18 282 114554
Chiusavecchia IM 19 577 115131
Diano Arentino IM 19 722 115853
Finale Ligure SV 19 11711 127564
Lucinasco IM 20 272 127836
Pornassio IM 20 685 128521

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of Savona (61345 inhabitants)
42 Km NE of Sanremo (54807 inhabitants)
55 Km SE of Cuneo (56081 inhabitants)
73 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.7 2021-11-18
15:50:15
44.1113 8.1157 5 2021-11-18
15:55:36
Sala Sismica INGV-Roma 97556241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-18 15:50:15 ± 0.15
Latitude 44.1113 ± 0.0072
Longitude 8.1157 ± 0.0088
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97556241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 889
Semi-minor axis of confidence ellipse (meter) 444
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 142
Circular confidence region, given by single value of horizontal uncertainty (meter) 890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.2689
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 97556241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-18 15:55:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.QLNO.HHE. 2021-11-18T15:50:25.17 0.6 undecidable manual S 38 0.2689 99 -0.55 45
GU.GBOS.HHZ. 2021-11-18T15:50:24.23 0.6 undecidable manual S 303 0.2365 101 -0.26 48
GU.IMI.HHZ. 2021-11-18T15:50:24.96 0.6 undecidable manual S 219 0.2563 100 -0.29 48
GU.MGRO.HHZ. 2021-11-18T15:50:24.69 0.6 undecidable manual S 253 0.2311 101 0.41 47
IV.QLNO.HHE. 2021-11-18T15:50:21.22 0.1 undecidable manual P 38 0.2689 99 -0.06 100
GU.MGRO.HHZ. 2021-11-18T15:50:20.55 0.6 undecidable manual P 253 0.2311 101 0.1 50
GU.GBOS.HHZ. 2021-11-18T15:50:20.85 1.0 undecidable manual P 303 0.2365 101 0.28 24
GU.CANO.HHZ. 2021-11-18T15:50:20.62 0.6 undecidable manual S 42 0.1295 109 0.12 51
GU.IMI.HHZ. 2021-11-18T15:50:20.89 0.1 undecidable manual P 219 0.2563 100 -0.12 99
GU.CANO.HHZ. 2021-11-18T15:50:18.61 0.1 negative manual P 42 0.1295 109 0.34 97
GU.RORO.HHZ. 2021-11-18T15:50:17.27 0.6 undecidable manual S 272 0.0351 142 -0.13 52
GU.RORO.HHZ. 2021-11-18T15:50:16.60 0.6 undecidable manual P 272 0.0351 142 0.12 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RORO.HHE. ML:0 0.00028128265 0.064 AML other m 2021-11-18T15:50:17.44
GU.RORO.HHN. ML:0 0.0003660602 0.0768 AML other m 2021-11-18T15:50:17.83
GU.CANO.HHE. ML:0.8 7.3893925E-5 0.4992 AML other m 2021-11-18T15:50:22.04
GU.CANO.HHN. ML:0.7 6.007013E-5 0.2304 AML other m 2021-11-18T15:50:21.29
GU.MGRO.HHE. ML:0.8 3.41218515E-5 0.2944 AML other m 2021-11-18T15:50:25.84
GU.MGRO.HHN. ML:0.8 3.940146E-5 0.3456 AML other m 2021-11-18T15:50:25.84
GU.IMI.HHE. ML:0.7 2.498814E-5 0.2432 AML other m 2021-11-18T15:50:25.34
GU.IMI.HHN. ML:0.7 2.621456E-5 0.2048 AML other m 2021-11-18T15:50:26.23
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