Earthquake with magnitude of ML 1.3 on date 07-08-2020 and time 23:58:56 (UTC) in region 1 km S Pozzol Groppo (AL)

A magnitude ML 1.3 earthquake occured in region: 1 km S Pozzol Groppo (AL), on

  • 07-08-2020 23:58:56 (UTC)
  • 08-08-2020 01:58:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.872, 9.029 at 11 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
Pozzol Groppo AL 1 328 328
Godiasco Salice Terme PV 4 3229 3557
Momperone AL 4 223 3780
Monleale AL 4 566 4346
Montemarzino AL 4 341 4687
Volpedo AL 4 1227 5914
Cecima PV 5 236 6150
Casasco AL 5 129 6279
Casalnoceto AL 6 980 7259
Ponte Nizza PV 6 807 8066
Volpeglino AL 6 148 8214
Berzano di Tortona AL 6 157 8371
Brignano-Frascata AL 7 456 8827
Rivanazzano Terme PV 7 5312 14139
Montegioco AL 7 313 14452
Rocca Susella PV 7 225 14677
Castellar Guidobono AL 8 399 15076
Cerreto Grue AL 8 323 15399
Retorbido PV 9 1538 16937
Montesegale PV 9 298 17235
Sarezzano AL 9 1171 18406
Avolasca AL 9 294 18700
Bagnaria PV 9 658 19358
Viguzzolo AL 9 3148 22506
Costa Vescovato AL 10 335 22841
San Sebastiano Curone AL 10 583 23424
Gremiasco AL 10 324 23748
Garbagna AL 10 696 24444
Codevilla PV 11 997 25441
Val di Nizza PV 11 624 26065
Castellania AL 11 90 26155
Villaromagnano AL 11 715 26870
Dernice AL 12 185 27055
Pontecurone AL 12 3723 30778
Paderna AL 12 220 30998
Carezzano AL 12 431 31429
Torrazza Coste PV 13 1680 33109
Carbonara Scrivia AL 13 1122 34231
Sant'Agata Fossili AL 13 425 34656
Spineto Scrivia AL 13 337 34993
Montacuto AL 13 278 35271
Tortona AL 14 27437 62708
Fortunago PV 14 390 63098
Voghera PV 14 39421 102519
Borgo Priolo PV 14 1474 103993
Varzi PV 14 3279 107272
Borgoratto Mormorolo PV 15 432 107704
Villalvernia AL 15 955 108659
Montebello della Battaglia PV 15 1628 110287
Gavazzana AL 15 180 110467
Sardigliano AL 16 406 110873
Valverde PV 16 287 111160
Fabbrica Curone AL 16 656 111816
Calvignano PV 17 122 111938
Castelnuovo Scrivia AL 17 5274 117212
Borghetto di Borbera AL 17 1966 119178
Cantalupo Ligure AL 17 527 119705
Casei Gerola PV 17 2500 122205
Casteggio PV 17 6805 129010
Cassano Spinola AL 18 1731 130741
Pizzale PV 18 735 131476
Rocchetta Ligure AL 18 200 131676
Montalto Pavese PV 19 890 132566
Zavattarello PV 19 991 133557
Oliva Gessi PV 19 176 133733
Corvino San Quirico PV 19 1039 134772
Albera Ligure AL 19 325 135097
Lungavilla PV 20 2429 137526
Silvano Pietra PV 20 672 138198
Verretto PV 20 395 138593
Torricella Verzate PV 20 844 139437
Grondona AL 20 510 139947
Alzano Scrivia AL 20 377 140324

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Alessandria (93943 inhabitants)
36 Km SW of Pavia (72576 inhabitants)
51 Km S of Vigevano (63310 inhabitants)
52 Km N of Genova (586655 inhabitants)
56 Km W of Piacenza (102191 inhabitants)
65 Km E of Asti (76202 inhabitants)
67 Km S of Milano (1345851 inhabitants)
71 Km SE of Novara (104380 inhabitants)
73 Km S of Rho (50434 inhabitants)
75 Km S of Sesto San Giovanni (81608 inhabitants)
76 Km NE of Savona (61345 inhabitants)
78 Km S of Cinisello Balsamo (75078 inhabitants)
81 Km S of Legnano (60262 inhabitants)
82 Km S of Monza (122671 inhabitants)
84 Km W of Cremona (71901 inhabitants)
84 Km S of Busto Arsizio (83106 inhabitants)
90 Km S of Gallarate (53343 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 1.3 2020-08-07
23:58:56
44.8722 9.0293 11 2020-08-08
00:08:58
Sala Sismica INGV-Roma 81749611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-07 23:58:56 ± 0.17
Latitude 44.8722 ± 0.0081
Longitude 9.0293 ± 0.0127
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81749611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 933
Semi-minor axis of confidence ellipse (meter) 834
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.10707
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81749611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-08 00:08:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2020-08-08T00:00:56.10 3.0 negative manual Pg 20.77 0
IV.MC2.EHZ. 2020-08-08T00:00:52.78 3.0 undecidable manual Sg 15.2 0
IV.ARVD.HHZ. 2020-08-08T00:00:44.36 3.0 undecidable manual Sg 17.84 0
IV.CESX.HHZ. 2020-08-08T00:00:38.18 3.0 undecidable manual Sn 4.72 0
IV.BLLA.EHZ. 2020-08-08T00:00:26.94 3.0 undecidable manual Sg 14.11 0
OX.VARN.HHZ. 2020-08-08T00:00:08.17 3.0 undecidable manual Sn -0.84 0
IV.ARRO.EHZ. 2020-08-08T00:00:00.47 3.0 undecidable manual Pn 7.12 0
IV.FIR.HHZ. 2020-08-07T23:59:55.97 3.0 undecidable manual Sn -1.22 0
IV.ARCI.HHZ. 2020-08-07T23:59:38.26 3.0 undecidable manual Pn -3.07 0
IV.SEI.HHZ. 2020-08-07T23:59:36.55 3.0 undecidable manual Pg 6.24 0
GU.TRAV.HHZ. 2020-08-07T23:59:31.07 0.6 undecidable manual S 306 1.1071 50 -0.41 39
CH.MUGIO.HHZ. 2020-08-07T23:59:29.75 0.6 undecidable manual S 0 1.0495 50 -0.01 43
GU.TRAV.HHZ. 2020-08-07T23:59:16.28 0.1 undecidable manual P 306 1.1071 50 -0.26 80
IV.VARE.HHZ. 2020-08-07T23:59:15.15 0.3 undecidable manual P 350 1.0117 50 0.25 62
CH.MUGIO.HHZ. 2020-08-07T23:59:15.55 0.1 undecidable manual P 0 1.0495 50 0 86
GU.PCP.HHZ. 2020-08-07T23:59:12.76 0.6 undecidable manual S 226 0.4766 50 -0.05 48
GU.RNCA.HHE. 2020-08-07T23:59:10.87 0.6 undecidable manual S 188 0.4047 50 0.2 47
IV.QLNO.HHZ. 2020-08-07T23:59:10.79 0.3 undecidable manual P 222 0.732 50 0.66 58
IV.BOB.HHE. 2020-08-07T23:59:08.53 0.6 undecidable manual S 109 0.3148 50 0.54 44
GU.GORR.HHE. 2020-08-07T23:59:08.49 0.6 undecidable manual S 145 0.3238 50 0.21 48
GU.ROTM.HHE. 2020-08-07T23:59:06.89 0.3 undecidable manual P 268 0.4802 50 1.08 51
GU.PCP.HHZ. 2020-08-07T23:59:05.18 0.1 undecidable manual P 226 0.4766 50 -0.58 85
GU.RNCA.HHE. 2020-08-07T23:59:04.30 0.3 undecidable manual P 188 0.4047 50 -0.22 71
GU.GORR.HHE. 2020-08-07T23:59:02.62 0.1 undecidable manual P 145 0.3238 50 -0.53 89
IV.BOB.HHE. 2020-08-07T23:59:02.96 0.1 undecidable manual P 109 0.3148 50 -0.02 100
IV.SARZ.HHE. 2020-08-07T23:59:01.34 0.3 undecidable manual S 267 0.0818 139 0.35 73
IV.SARZ.HHE. 2020-08-07T23:58:58.65 0.1 undecidable manual P 267 0.0818 139 -0.28 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHE. ML:0.9 2.085E-5 0.46 AML other m 2020-08-07T23:59:14.57
GU.PCP.HHN. ML:0.9 2.08E-5 1.24 AML other m 2020-08-07T23:59:14.63
CH.MUGIO.HHE. ML:1.3 1.285E-5 0.38 AML other m 2020-08-07T23:59:30.37
CH.MUGIO.HHN. ML:1.3 1.51E-5 0.9 AML other m 2020-08-07T23:59:32.45
IV.VARE.HHE. ML:1.4 1.855E-5 0.76 AML other m 2020-08-07T23:59:32.38
GU.TRAV.HHN. ML:2 7.365E-5 0.4 AML other m 2020-08-07T23:59:33.38
GU.TRAV.HHE. ML:2 6.6E-5 0.28 AML other m 2020-08-07T23:59:33.53
IV.VARE.HHN. ML:1.3 1.705E-5 0.94 AML other m 2020-08-07T23:59:36.19
IV.SEI.HHE. ML:2.4 6.55E-5 0.14 AML other m 2020-08-07T23:59:47.10
IV.SEI.HHN. ML:2.6 0.00010415 0.18 AML other m 2020-08-07T23:59:52.15
OX.VARN.HHE. ML:2.4 3.41E-5 0.04 AML other m 2020-08-08T00:00:33.71
OX.VARN.HHN. ML:2.5 4.98E-5 0.06 AML other m 2020-08-08T00:00:33.71
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