Earthquake with magnitude of ML 1.2 on date 10-08-2020 and time 15:24:00 (Italy) in region 5 km SE Ponzone (AL)

A magnitude ML 1.2 earthquake occured in region: 5 km SE Ponzone (AL), on

  • 10-08-2020 13:24:00 (UTC)
  • 10-08-2020 15:24:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.54, 8.48 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
Ponzone AL 5 1051 1051
Malvicino AL 6 85 1136
Morbello AL 7 402 1538
Sassello SV 7 1777 3315
Cartosio AL 7 747 4062
Mioglia SV 8 526 4588
Pareto AL 8 554 5142
Cassinelle AL 9 914 6056
Grognardo AL 10 259 6315
Montechiaro d'Acqui AL 10 560 6875
Cavatore AL 10 291 7166
Urbe SV 11 700 7866
Tiglieto GE 11 546 8412
Castelletto d'Erro AL 11 148 8560
Spigno Monferrato AL 12 1050 9610
Pontinvrea SV 12 847 10457
Melazzo AL 12 1325 11782
Mombaldone AT 12 209 11991
Prasco AL 12 521 12512
Giusvalla SV 13 441 12953
Molare AL 13 2181 15134
Ponti AL 13 606 15740
Denice AL 13 176 15916
Visone AL 13 1194 17110
Cremolino AL 13 1086 18196
Morsasco AL 15 679 18875
Terzo AL 15 923 19798
Acqui Terme AL 15 19896 39694
Merana AL 15 189 39883
Rossiglione GE 15 2779 42662
Piana Crixia SV 15 788 43450
Trisobbio AL 16 655 44105
Bistagno AL 16 1887 45992
Stella SV 16 3009 49001
Ovada AL 17 11477 60478
Belforte Monferrato AL 17 515 60993
Monastero Bormida AT 17 931 61924
Dego SV 17 1985 63909
Campo Ligure GE 17 2955 66864
Roccaverano AT 18 399 67263
Orsara Bormida AL 18 424 67687
Strevi AL 18 2019 69706
Serole AT 18 123 69829
Montaldo Bormida AL 18 664 70493
Carpeneto AL 18 977 71470
Sessame AT 18 271 71741
Tagliolo Monferrato AL 18 1581 73322
Montabone AT 19 333 73655
Masone GE 19 3679 77334
Olmo Gentile AT 19 80 77414
Rocca Grimalda AL 19 1512 78926
Rivalta Bormida AL 19 1446 80372

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of Savona (61345 inhabitants)
39 Km W of Genova (586655 inhabitants)
42 Km S of Alessandria (93943 inhabitants)
45 Km SE of Asti (76202 inhabitants)
76 Km E of Cuneo (56081 inhabitants)
81 Km SE of Moncalieri (57294 inhabitants)
86 Km SE of Torino (890529 inhabitants)
89 Km SW of Pavia (72576 inhabitants)
91 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 1.2 2020-08-10
13:24:00
44.54 8.48 9 2020-08-10
13:40:16
Sala Sismica INGV-Roma 81845311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-10 13:24:00 ± 0.35
Latitude 44.54 ± 0.03
Longitude 8.48 ± 0.06
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81845311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5895
Semi-minor axis of confidence ellipse (meter) 1577
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 126
Circular confidence region, given by single value of horizontal uncertainty (meter) 5890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 230
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69608
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 81845311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-10 13:40:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NOCI.HHZ. 2020-08-10T13:24:33.88 3.0 undecidable manual Sn -1.12 0
IV.APPI.EHZ. 2020-08-10T13:24:29.48 3.0 undecidable manual Sg 18.76 0
GU.MGRO.HHZ. 2020-08-10T13:24:23.63 0.3 undecidable manual S 224 0.6961 50 -0.25 63
GU.RORO.HHZ. 2020-08-10T13:24:18.58 0.3 undecidable manual S 215 0.5243 50 -0.22 66
SI.MOSI.HHZ. 2020-08-10T13:24:16.16 3.0 undecidable manual Sn -1.32 0
OX.CIMO.HHZ. 2020-08-10T13:24:15.62 3.0 undecidable manual Sg 11.4 0
GU.MGRO.HHZ. 2020-08-10T13:24:14.47 0.3 undecidable manual P 224 0.6961 50 0.52 60
GU.CANO.HHZ. 2020-08-10T13:24:14.66 0.3 undecidable manual S 208 0.3795 50 0.16 69
IV.PCN.EHZ. 2020-08-10T13:24:12.07 3.0 undecidable manual P 0
IV.QLNO.HHZ. 2020-08-10T13:24:10.24 0.6 undecidable manual S 204 0.241 109 0.04 48
GU.RORO.HHZ. 2020-08-10T13:24:10.41 0.1 undecidable manual P 215 0.5243 50 -0.61 80
GU.CANO.HHZ. 2020-08-10T13:24:09.07 0.3 undecidable manual P 208 0.3795 50 0.53 63
IV.PCN.EHZ. 2020-08-10T13:24:06.35 3.0 undecidable manual Sg 13.04 0
IV.QLNO.HHZ. 2020-08-10T13:24:06.15 0.3 undecidable manual P 204 0.241 109 0.1 72
GU.PCP.HHZ. 2020-08-10T13:24:03.84 0.3 undecidable manual S 94 0.045 152 -0.18 73
GU.PCP.HHZ. 2020-08-10T13:24:02.56 0.1 undecidable manual P 94 0.045 152 0.07 100
IV.VAGA.HHZ. 2020-08-10T13:23:50.85 3.0 undecidable manual Sg 4.07 0
GU.CIRO.HHZ. 2020-08-10T13:23:47.05 3.0 undecidable manual Pn 3.09 0
CR.STON.BHZ. 2020-08-10T13:23:45.06 3.0 undecidable manual Pn 4.05 0
IV.MRLC.HHZ. 2020-08-10T13:23:29.05 3.0 undecidable manual Pn -5.06 0
IV.SRES.HHZ. 2020-08-10T13:23:13.18 3.0 undecidable manual Sn -2.68 0
IV.SFI.EHZ. 2020-08-10T13:23:06.99 3.0 undecidable manual Sn -1.5 0
IV.RIBO.EHZ.01 2020-08-10T13:23:01.28 3.0 undecidable manual Pn 0.1 0
IV.CAMP.HHZ. 2020-08-10T13:23:01.23 3.0 undecidable manual P -0.61 0
IV.FIR.HHZ. 2020-08-10T13:23:00.42 3.0 positive manual P 0.19 0
IV.ARVD.HHZ. 2020-08-10T13:22:54.52 3.0 undecidable manual P 0.32 0
IV.ATMI.HHZ. 2020-08-10T13:22:53.03 3.0 undecidable manual P 2.12 0
IV.NARO.HHZ. 2020-08-10T13:22:53.55 3.0 negative manual P 0.54 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.MGRO.HNN. ML:1.8 9.7244465E-5 6.1696 AML other m 2020-08-10T13:24:18.47
GU.PCP.HHE. ML:1 0.0001652659 0.3968 AML other m 2020-08-10T13:24:04.26
IV.QLNO.HHN. ML:0.9 3.758612E-5 0.96 AML other m 2020-08-10T13:24:11.09
IV.QLNO.HHE. ML:0.8 3.2835715E-5 4.3392 AML other m 2020-08-10T13:24:10.61
GU.CANO.HHN. ML:1.6 0.0001343153 0.32 AML other m 2020-08-10T13:24:15.68
GU.CANO.HHE. ML:1.4 8.3823785E-5 4.6784 AML other m 2020-08-10T13:24:18.00
GU.RORO.HHE. ML:2.2 0.0003402949 1.3824 AML other m 2020-08-10T13:24:20.81
GU.RORO.HHN. ML:1.1 2.4438095E-5 0.16 AML other m 2020-08-10T13:24:20.90
GU.MGRO.HHE. ML:1 1.3775765E-5 3.744 AML other m 2020-08-10T13:24:24.75
GU.MGRO.HHN. ML:1.1 1.848495E-5 2.5152 AML other m 2020-08-10T13:24:26.04
GU.MGRO.HNE. ML:2 0.0001376123 13.7728 AML other m 2020-08-10T13:24:21.75
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