Earthquake with magnitude of ML 1.5 on date 15-07-2019 and time 23:28:10 (Italy) in region 2 km W Acqui Terme (AL)

A magnitude ML 1.5 earthquake occured in region: 2 km W Acqui Terme (AL), on

  • 15-07-2019 21:28:10 (UTC)
  • 15-07-2019 23:28:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.68, 8.45 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
Acqui Terme AL 2 19896 19896
Terzo AL 2 923 20819
Melazzo AL 4 1325 22144
Visone AL 5 1194 23338
Montabone AT 5 333 23671
Castel Rocchero AT 5 395 24066
Cavatore AL 5 291 24357
Alice Bel Colle AL 5 766 25123
Grognardo AL 6 259 25382
Ricaldone AL 6 684 26066
Strevi AL 6 2019 28085
Bistagno AL 7 1887 29972
Castel Boglione AT 7 609 30581
Castelletto d'Erro AL 7 148 30729
Castelletto Molina AT 8 180 30909
Quaranti AT 8 183 31092
Morsasco AL 8 679 31771
Ponti AL 9 606 32377
Rocchetta Palafea AT 9 338 32715
Sessame AT 9 271 32986
Fontanile AT 9 567 33553
Rivalta Bormida AL 9 1446 34999
Prasco AL 9 521 35520
Orsara Bormida AL 9 424 35944
Maranzana AT 9 277 36221
Morbello AL 10 402 36623
Cartosio AL 10 747 37370
Cassine AL 10 2961 40331
Ponzone AL 10 1051 41382
Monastero Bormida AT 10 931 42313
Mombaruzzo AT 10 1117 43430
Montechiaro d'Acqui AL 11 560 43990
Castelnuovo Bormida AL 11 694 44684
Calamandrana AT 11 1761 46445
Trisobbio AL 11 655 47100
Montaldo Bormida AL 11 664 47764
Cassinasco AT 12 611 48375
Cremolino AL 12 1086 49461
Cassinelle AL 12 914 50375
Bubbio AT 12 893 51268
Denice AL 13 176 51444
Bruno AT 13 321 51765
Carpeneto AL 13 977 52742
Nizza Monferrato AT 13 10429 63171
Canelli AT 13 10485 73656
Malvicino AL 13 85 73741
Molare AL 14 2181 75922
Castelnuovo Belbo AT 14 895 76817
San Marzano Oliveto AT 15 1047 77864
Loazzolo AT 15 359 78223
Mombaldone AT 15 209 78432
Incisa Scapaccino AT 16 2288 80720
Sezzadio AL 16 1246 81966
Vaglio Serra AT 16 275 82241
Rocca Grimalda AL 16 1512 83753
Ovada AL 16 11477 95230
Moasca AT 16 494 95724
Cessole AT 17 403 96127
Gamalero AL 17 844 96971
Bergamasco AL 17 744 97715
Roccaverano AT 17 399 98114
Carentino AL 17 340 98454
Santo Stefano Belbo CN 17 3984 102438
Spigno Monferrato AL 17 1050 103488
Cortiglione AT 18 571 104059
Castelspina AL 18 416 104475
Silvano d'Orba AL 18 1988 106463
Vinchio AT 18 601 107064
Castelnuovo Calcea AT 18 759 107823
San Giorgio Scarampi AT 18 122 107945
Vesime AT 18 622 108567
Frascaro AL 18 440 109007
Tagliolo Monferrato AL 18 1581 110588
Belforte Monferrato AL 18 515 111103
Pareto AL 19 554 111657
Calosso AT 19 1279 112936
Predosa AL 19 2048 114984
Olmo Gentile AT 19 80 115064
Borgoratto Alessandrino AL 19 584 115648
Belveglio AT 19 350 115998
Mombercelli AT 20 2259 118257
Cossano Belbo CN 20 958 119215
Agliano Terme AT 20 1642 120857

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Alessandria (93943 inhabitants)
31 Km SE of Asti (76202 inhabitants)
41 Km N of Savona (61345 inhabitants)
49 Km NW of Genova (586655 inhabitants)
70 Km SE of Moncalieri (57294 inhabitants)
75 Km SE of Torino (890529 inhabitants)
78 Km E of Cuneo (56081 inhabitants)
78 Km SW of Vigevano (63310 inhabitants)
80 Km SW of Pavia (72576 inhabitants)
87 Km S of Novara (104380 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
Rev 100 ML 1.5 2019-07-15
21:28:10
44.68 8.45 11 2019-07-15
21:42:29
Sala Sismica INGV-Roma 70612271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-15 21:28:10 ± 0.12
Latitude 44.68 ± 0.01
Longitude 8.45 ± 0.01
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 70612271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 947
Semi-minor axis of confidence ellipse (meter) 726
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 950
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.57831
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 70612271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-15 21:42:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2019-07-15T21:29:56.90 3.0 negative manual Pg 16.5 0
IV.MGR.HHZ. 2019-07-15T21:29:54.88 3.0 undecidable manual Pg 11.86 0
IV.CMPR.HHZ. 2019-07-15T21:29:52.05 3.0 undecidable manual Pg 12.65 0
IT.LRNO.HNZ. 2019-07-15T21:29:30.91 3.0 positive manual Pg 8.32 0
IV.PTRJ.HNZ. 2019-07-15T21:29:21.59 3.0 undecidable manual Pn -1.9 0
IV.LRP.EHZ. 2019-07-15T21:29:19.68 3.0 undecidable manual Pg 5.83 0
IV.CPGN.EHZ. 2019-07-15T21:29:11.71 3.0 undecidable manual Sn -6.69 0
OX.SABO.HNZ. 2019-07-15T21:28:47.55 3.0 negative manual Pn -9.55 0
IV.RIBO.EHZ.01 2019-07-15T21:28:42.56 3.0 negative manual Pg -0.95 0
GU.ENR.HHZ. 2019-07-15T21:28:37.67 0.6 undecidable manual S 239 0.8616 50 -0.46 38
GU.BLANC.HHZ. 2019-07-15T21:28:36.76 3.0 undecidable manual P 1.5783 -1.82 0
GU.GBOS.HHZ. 2019-07-15T21:28:30.47 0.3 undecidable manual S 225 0.6151 50 -0.39 62
GU.ENR.HHZ. 2019-07-15T21:28:26.74 0.1 undecidable manual P 239 0.8616 50 0.44 77
GU.RNCA.HHE. 2019-07-15T21:28:25.27 0.1 undecidable manual S 120 0.4137 50 0.4 86
IV.QLNO.HHZ. 2019-07-15T21:28:23.35 0.3 undecidable manual S 192 0.3615 50 0.03 70
GU.GBOS.HHZ. 2019-07-15T21:28:22.31 0.1 undecidable manual P 225 0.6151 50 0.22 86
GU.CANO.HHZ. 2019-07-15T21:28:20.17 1.0 undecidable manual P 198 0.4946 50 0.15 22
GU.ROTM.HHZ. 2019-07-15T21:28:18.15 0.6 undecidable manual S 338 0.1835 50 0.09 48
GU.RNCA.HHE. 2019-07-15T21:28:17.67 0.1 undecidable manual P 120 0.4137 50 -0.97 69
IV.QLNO.HHZ. 2019-07-15T21:28:17.96 0.3 positive manual P 192 0.3615 50 0.21 68
GU.PCP.HHZ. 2019-07-15T21:28:17.10 0.1 undecidable manual S 153 0.1538 123 -0.06 97
GU.ROTM.HHZ. 2019-07-15T21:28:14.63 0.1 positive manual P 338 0.1835 50 -0.08 96
GU.PCP.HHZ. 2019-07-15T21:28:14.25 0.1 undecidable manual P 153 0.1538 123 0.06 97
IT.ACQ.HGE. 2019-07-15T21:28:13.92 0.1 undecidable manual S 68 0.0108 174 -0.04 100
IT.ACQ.HGE. 2019-07-15T21:28:12.39 0.1 undecidable manual P 68 0.0108 174 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHE. ML:1.1 0.0001138 0.54 AML other m 2019-07-15T21:28:17.55
GU.PCP.HHN. ML:1.1 0.00011085 1.02 AML other m 2019-07-15T21:28:17.71
GU.ROTM.HHN. ML:1.8 0.0004845 0.16 AML other m 2019-07-15T21:28:18.24
GU.ROTM.HHE. ML:1.8 0.000433 0.48 AML other m 2019-07-15T21:28:18.39
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