Earthquake with magnitude of ML 1.5 on date 26-08-2020 and time 12:15:27 (Italy) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.5 earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 26-08-2020 10:15:27 (UTC)
  • 26-08-2020 12:15:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.26, 8.57 at 2 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
Savona SV 9 61345 61345
Albissola Marina SV 9 5487 66832
Celle Ligure SV 9 5237 72069
Albisola Superiore SV 10 10163 82232
Bergeggi SV 10 1129 83361
Vado Ligure SV 11 8336 91697
Varazze SV 11 13251 104948
Spotorno SV 12 3803 108751
Quiliano SV 13 7232 115983
Noli SV 14 2736 118719
Cogoleto GE 16 9172 127891
Stella SV 16 3009 130900
Vezzi Portio SV 17 809 131709
Arenzano GE 18 11519 143228
Altare SV 20 2108 145336
Orco Feglino SV 20 890 146226

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SE of Savona (61345 inhabitants)
34 Km SW of Genova (586655 inhabitants)
73 Km S of Alessandria (93943 inhabitants)
77 Km SE of Asti (76202 inhabitants)
79 Km NE of Sanremo (54807 inhabitants)
82 Km E of Cuneo (56081 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 1.5 2020-08-26
10:15:27
44.26 8.57 2 2020-08-26
10:32:18
Sala Sismica INGV-Roma 82345001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-26 10:15:27 ± 0.3
Latitude 44.26 ± 0.02
Longitude 8.57 ± 0.02
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82345001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1900
Semi-minor axis of confidence ellipse (meter) 1005
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 337
Circular confidence region, given by single value of horizontal uncertainty (meter) 1900
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.51
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.09268
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 18
Type of magnitude ML
Reference to an origin 82345001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-26 10:32:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTP.HNZ. 2020-08-26T10:17:25.95 3.0 undecidable manual Sg 7.61 0
IV.CMPR.HHZ. 2020-08-26T10:17:17.40 3.0 undecidable manual Pg 10.32 0
IV.VIVA.HHZ. 2020-08-26T10:17:17.06 3.0 undecidable manual Sn -7.67 0
IV.MTGR.HHZ. 2020-08-26T10:17:11.89 3.0 undecidable manual Pn -5.17 0
IV.PZUN.HHZ. 2020-08-26T10:17:03.25 3.0 negative manual Pn -5.17 0
IV.PTRJ.HHZ. 2020-08-26T10:17:03.15 3.0 negative manual Pg 11.32 0
IV.MMUR.HNZ. 2020-08-26T10:17:00.94 3.0 undecidable manual Sn -7.02 0
IV.PE3.EHZ. 2020-08-26T10:16:57.65 3.0 undecidable manual Sn -0.04 0
IV.SENA.HHZ. 2020-08-26T10:16:34.79 3.0 negative manual Pg 2.57 0
IV.ATCC.EHZ. 2020-08-26T10:16:20.03 3.0 positive manual Pn -2.62 0
IV.PE3.EHZ. 2020-08-26T10:16:16.29 3.0 positive manual Pn -2.76 0
IV.BRSN.HNZ. 2020-08-26T10:16:13.97 3.0 undecidable manual Pn 0.26 0
IV.RONT.HHZ. 2020-08-26T10:16:11.42 3.0 negative manual Pg 3.58 0
GU.PZZ.HHZ. 2020-08-26T10:16:03.48 0.6 undecidable manual S 284 1.0666 50 -0.07 43
GU.STV.HHZ. 2020-08-26T10:15:59.19 0.6 undecidable manual S 269 0.8903 50 0.88 35
GU.BURY.HHE. 2020-08-26T10:15:57.60 0.6 undecidable manual S 237 0.8705 50 -0.13 44
GU.PZZ.HHZ. 2020-08-26T10:15:49.21 1.0 positive manual P 284 1.0666 50 0.88 17
GU.BHB.HHZ. 2020-08-26T10:15:48.91 0.1 undecidable manual P 302 1.0927 50 0.13 84
GU.MGRO.HHZ. 2020-08-26T10:15:47.76 0.6 undecidable manual S 248 0.5873 50 -1.59 26
GU.STV.HHZ. 2020-08-26T10:15:46.04 0.1 undecidable manual P 269 0.8903 50 0.73 74
GU.ENR.HHZ. 2020-08-26T10:15:44.65 0.3 positive manual P 268 0.8229 50 0.48 62
FR.SAOF.HHZ.00 2020-08-26T10:15:44.82 1.0 negative manual P 250 0.7788 50 1.41 14
IV.BOB.HHE. 2020-08-26T10:15:44.91 0.3 undecidable manual P 51 0.8058 50 1.04 49
GU.BURY.HHE. 2020-08-26T10:15:42.99 0.1 undecidable manual P 237 0.8705 50 -1.99 36
GU.GORR.HHE. 2020-08-26T10:15:40.26 0.3 undecidable manual P 56 0.6214 50 -0.46 65
IV.IMI.HHZ. 2020-08-26T10:15:40.51 0.1 undecidable manual P 234 0.598 50 0.19 93
GU.ROTM.HHZ. 2020-08-26T10:15:40.45 0.6 negative manual P 345 0.6079 50 -0.04 48
GU.MGRO.HHZ. 2020-08-26T10:15:39.98 0.6 negative manual P 248 0.5873 50 -0.16 47
GU.GBOS.HHE. 2020-08-26T10:15:38.30 0.1 undecidable manual P 268 0.5225 50 -0.72 81
GU.RORO.HHZ. 2020-08-26T10:15:36.21 0.1 undecidable manual P 248 0.3894 93 -0.02 100
GU.RNCA.HHZ. 2020-08-26T10:15:35.21 0.3 positive manual P 52 0.3444 94 -0.02 76
IV.GNV.HGZ. 2020-08-26T10:15:35.12 3.0 undecidable manual P 0
GU.PCP.HHZ. 2020-08-26T10:15:33.28 0.1 positive manual P 357 0.2806 94 -0.54 91
IV.QLNO.HHZ. 2020-08-26T10:15:33.69 0.6 undecidable manual S 292 0.1718 97 -0.53 47
GU.CANO.HHZ. 2020-08-26T10:15:33.49 0.3 positive manual P 258 0.2437 95 0.5 70
IV.QLNO.HHZ. 2020-08-26T10:15:31.73 0.1 positive manual P 292 0.1718 97 0.33 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:1.6 0.0002455 0.88 AML other m 2020-08-26T10:15:38.47
GU.CANO.HHN. ML:1.6 0.0002035 0.22 AML other m 2020-08-26T10:15:41.87
GU.PCP.HHE. ML:1.5 0.0001705 0.8 AML other m 2020-08-26T10:15:43.51
GU.PCP.HHN. ML:1.6 0.0001915 1.02 AML other m 2020-08-26T10:15:46.68
IV.IMI.HHN. ML:1.7 9.525E-5 1.38 AML other m 2020-08-26T10:15:54.99
GU.MGRO.HHE. ML:1.4 4.93E-5 0.8 AML other m 2020-08-26T10:15:55.69
GU.MGRO.HHN. ML:1.4 4.87E-5 0.34 AML other m 2020-08-26T10:15:55.81
GU.ENR.HHE. ML:1.4 3.03E-5 1.76 AML other m 2020-08-26T10:15:58.90
GU.ENR.HHN. ML:1.6 4.77E-5 1.24 AML other m 2020-08-26T10:16:00.69
FR.SAOF.HHE.00 ML:1.5 4.195E-5 0.58 AML other m 2020-08-26T10:16:02.18
GU.PZZ.HHN. ML:1.8 4.625E-5 1.04 AML other m 2020-08-26T10:16:12.65
IV.QLNO.HHE. ML:1.3 0.00017156281 0.2624 AML other m 2020-08-26T10:15:36.68
IV.QLNO.HHN. ML:1.3 0.0001970133 0.2432 AML other m 2020-08-26T10:15:34.97
IV.IMI.HHE. ML:1.4 5.1997725E-5 3.7568 AML other m 2020-08-26T10:15:52.91
FR.SAOF.HHN.00 ML:1.4 3.7132935E-5 1.12 AML other m 2020-08-26T10:16:15.46
GU.STV.HHE. ML:1.3 2.1362345E-5 5.0176 AML other m 2020-08-26T10:16:01.88
GU.STV.HHN. ML:1.4 2.3152805E-5 0.4032 AML other m 2020-08-26T10:16:00.18
GU.PZZ.HHE. ML:1.7 3.554628E-5 8.2368 AML other m 2020-08-26T10:16:09.19
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