Earthquake with magnitude of ML 0.9 on date 02-07-2020 and time 22:16:58 (UTC) in region 6 km NE Sassello (SV)

A magnitude ML 0.9 earthquake occured in region: 6 km NE Sassello (SV), on

  • 02-07-2020 22:16:58 (UTC)
  • 03-07-2020 00:16:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.52, 8.53 at 9 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
Sassello SV 6 1777 1777
Urbe SV 6 700 2477
Tiglieto GE 7 546 3023
Ponzone AL 9 1051 4074
Morbello AL 9 402 4476
Cassinelle AL 10 914 5390
Malvicino AL 10 85 5475
Mioglia SV 10 526 6001
Pontinvrea SV 12 847 6848
Cartosio AL 12 747 7595
Pareto AL 12 554 8149
Rossiglione GE 12 2779 10928
Grognardo AL 12 259 11187
Molare AL 12 2181 13368
Campo Ligure GE 13 2955 16323
Prasco AL 13 521 16844
Cremolino AL 13 1086 17930
Cavatore AL 14 291 18221
Giusvalla SV 14 441 18662
Montechiaro d'Acqui AL 14 560 19222
Stella SV 14 3009 22231
Masone GE 15 3679 25910
Belforte Monferrato AL 15 515 26425
Ovada AL 16 11477 37902
Spigno Monferrato AL 16 1050 38952
Visone AL 16 1194 40146
Castelletto d'Erro AL 16 148 40294
Melazzo AL 16 1325 41619
Morsasco AL 16 679 42298
Trisobbio AL 16 655 42953
Tagliolo Monferrato AL 17 1581 44534
Mombaldone AT 17 209 44743
Ponti AL 18 606 45349
Cogoleto GE 18 9172 54521
Acqui Terme AL 18 19896 74417
Denice AL 18 176 74593
Arenzano GE 18 11519 86112
Carpeneto AL 18 977 87089
Piana Crixia SV 18 788 87877
Terzo AL 18 923 88800
Montaldo Bormida AL 18 664 89464
Merana AL 19 189 89653
Varazze SV 19 13251 102904
Orsara Bormida AL 19 424 103328
Rocca Grimalda AL 19 1512 104840
Lerma AL 19 869 105709
Mele GE 19 2725 108434
Dego SV 19 1985 110419
Strevi AL 20 2019 112438

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km N of Savona (61345 inhabitants)
34 Km W of Genova (586655 inhabitants)
44 Km S of Alessandria (93943 inhabitants)
49 Km SE of Asti (76202 inhabitants)
79 Km E of Cuneo (56081 inhabitants)
85 Km SE of Moncalieri (57294 inhabitants)
89 Km SW of Pavia (72576 inhabitants)
91 Km SE of Torino (890529 inhabitants)
92 Km SW of Vigevano (63310 inhabitants)
98 Km NE of Sanremo (54807 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 0.9 2020-07-02
22:16:58
44.52 8.53 9 2020-07-02
22:24:38
Sala Sismica INGV-Roma 80710381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-02 22:16:58 ± 0.09
Latitude 44.52 ± 0.00
Longitude 8.53 ± 0.02
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80710381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1242
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 1240
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38041
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 80710381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-02 22:24:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2020-07-02T22:18:40.42 3.0 undecidable manual Pg 13.31 0
IV.ARRO.EHZ. 2020-07-02T22:18:28.45 3.0 undecidable manual Sg -0.36 0
IV.PESA.HHZ. 2020-07-02T22:18:21.28 3.0 undecidable manual Sg 5.11 0
IV.ROSPO.HHZ. 2020-07-02T22:18:12.49 3.0 undecidable manual Pn 4.3 0
ST.OZOL.EHZ. 2020-07-02T22:18:02.83 3.0 undecidable manual Sn -3.14 0
IV.TERO.HHZ. 2020-07-02T22:17:55.79 3.0 undecidable manual Pg 1.97 0
IV.MMUR.HNZ. 2020-07-02T22:17:36.59 3.0 undecidable manual Pn -6.81 0
GU.TRAV.HHZ. 2020-07-02T22:17:21.76 3.0 negative manual P 2.18 0
GU.ENR.HHZ. 2020-07-02T22:17:15.79 3.0 undecidable manual Pn -0.97 0
GU.CANO.HHZ. 2020-07-02T22:17:12.89 0.6 undecidable manual S 214 0.3804 50 0.14 46
GU.ROTM.HHZ. 2020-07-02T22:17:11.88 0.6 undecidable manual S 339 0.3489 50 0.07 46
IV.QLNO.HHZ. 2020-07-02T22:17:08.21 0.6 undecidable manual S 214 0.2401 109 -0.09 47
GU.ROTM.HHZ. 2020-07-02T22:17:06.14 0.1 positive manual P 339 0.3489 50 -0.06 93
GU.CANO.HHZ. 2020-07-02T22:17:06.63 0.6 positive manual P 214 0.3804 50 -0.12 46
IV.QLNO.HHZ. 2020-07-02T22:17:04.26 0.6 undecidable manual P 214 0.2401 109 0.08 47
IV.PLMA.HHZ. 2020-07-02T22:17:03.68 3.0 undecidable manual P -6.13 0
GU.PCP.HHZ. 2020-07-02T22:17:01.81 0.6 undecidable manual S 30 0.0198 166 0.08 49
GU.PCP.HHZ. 2020-07-02T22:17:00.37 0.1 undecidable manual P 30 0.0198 166 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHN. ML:0 0.00011540155 0.3968 AML other m 2020-07-02T22:17:01.00
GU.PCP.HHE. ML:0 0.0001936188 0.064 AML other m 2020-07-02T22:17:01.88
IV.PLMA.HHN. ML:1.3 1.5233032E-5 0.896 AML other m 2020-07-02T22:17:20.38
IV.QLNO.HHE. ML:0.6 2.562329E-5 0.2176 AML other m 2020-07-02T22:17:09.66
IV.QLNO.HHN. ML:0.6 1.78149325E-5 0.1152 AML other m 2020-07-02T22:17:08.65
GU.ROTM.HHN. ML:1.5 0.00010642438615 0.1408 AML other m 2020-07-02T22:17:12.24
GU.ROTM.HHE. ML:1.4 9.444356E-5 0.7552 AML other m 2020-07-02T22:17:18.35
GU.CANO.HHE. ML:0.9 2.6888295E-5 0.512 AML other m 2020-07-02T22:17:14.36
GU.CANO.HHN. ML:1.1 3.760976E-5 0.2944 AML other m 2020-07-02T22:17:14.16
GU.ENR.HHE. ML:0.7 6.610403E-6 0.064 AML other m 2020-07-02T22:17:29.36
GU.ENR.HHN. ML:1 1.00618595E-5 0.1408 AML other m 2020-07-02T22:17:28.58
GU.TRAV.HHN. ML:0.9 6.7833185E-6 0.064 AML other m 2020-07-02T22:17:24.62
GU.TRAV.HHE. ML:0.9 5.8093155E-6 0.32 AML other m 2020-07-02T22:17:52.42
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