Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 08-02-2023 and time 00:09:02 (Italy) in region 1 km W Coazzolo (AT)

A magnitude ML 1.5 earthquake occured in region: 1 km W Coazzolo (AT), on

  • 07-02-2023 23:09:02 (UTC)
  • 08-02-2023 00:09:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.7290, 8.1350 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Coazzolo AT 1 302 302
Neive CN 1 3405 3707
Castagnole delle Lanze AT 3 3798 7505
Neviglie CN 4 382 7887
Barbaresco CN 4 658 8545
Castiglione Tinella CN 4 895 9440
Mango CN 5 1308 10748
Treiso CN 6 820 11568
Trezzo Tinella CN 6 331 11899
Camo CN 6 201 12100
Magliano Alfieri CN 7 2153 14253
Calosso AT 8 1279 15532
Costigliole d'Asti AT 8 5914 21446
Guarene CN 8 3596 25042
Santo Stefano Belbo CN 8 3984 29026
Alba CN 8 31437 60463
Cossano Belbo CN 8 958 61421
Castagnito CN 9 2163 63584
Govone CN 9 2203 65787
Priocca CN 9 2017 67804
Castellinaldo d'Alba CN 10 938 68742
San Martino Alfieri AT 10 666 69408
Rocchetta Belbo CN 11 167 69575
Benevello CN 11 474 70049
Agliano Terme AT 12 1642 71691
Vezza d'Alba CN 12 2287 73978
Loazzolo AT 12 359 74337
Isola d'Asti AT 12 2071 76408
Borgomale CN 12 381 76789
Diano d'Alba CN 12 3570 80359
Moasca AT 12 494 80853
Canelli AT 12 10485 91338
Piobesi d'Alba CN 12 1288 92626
Rodello CN 12 980 93606
Cessole AT 12 403 94009
Vesime AT 13 622 94631
Castino CN 13 483 95114
Antignano AT 13 974 96088
San Damiano d'Asti AT 13 8315 104403
San Marzano Oliveto AT 13 1047 105450
Montegrosso d'Asti AT 13 2344 107794
Montelupo Albese CN 14 529 108323
Canale CN 14 5686 114009
Roddi CN 14 1607 115616
Corneliano d'Alba CN 14 2118 117734
Castelnuovo Calcea AT 14 759 118493
Cassinasco AT 14 611 119104
Bosia CN 14 177 119281
Lequio Berria CN 14 487 119768
Vigliano d'Asti AT 14 835 120603
Celle Enomondo AT 14 484 121087
Grinzane Cavour CN 14 1995 123082
Bubbio AT 15 893 123975
Revigliasco d'Asti AT 15 767 124742
Montaldo Scarampi AT 15 755 125497
Cisterna d'Asti AT 15 1245 126742
Mongardino AT 15 921 127663
Monticello d'Alba CN 15 2292 129955
San Giorgio Scarampi AT 16 122 130077
Albaretto della Torre CN 16 242 130319
Perletto CN 16 292 130611
Calamandrana AT 16 1761 132372
Mombercelli AT 16 2259 134631
Santa Vittoria d'Alba CN 16 2795 137426
Arguello CN 16 199 137625
Santo Stefano Roero CN 17 1390 139015
Montà CN 17 4733 143748
Sinio CN 17 522 144270
Castiglione Falletto CN 17 700 144970
Serralunga d'Alba CN 17 564 145534
Rocchetta Palafea AT 17 338 145872
Monteu Roero CN 17 1634 147506
Cortemilia CN 17 2331 149837
Vinchio AT 17 601 150438
Verduno CN 17 588 151026
Montaldo Roero CN 17 844 151870
Cravanzana CN 17 411 152281
Cerretto Langhe CN 17 442 152723
Sessame AT 17 271 152994
Monastero Bormida AT 18 931 153925
Baldissero d'Alba CN 18 1069 154994
Vaglio Serra AT 18 275 155269
Sommariva Perno CN 18 2797 158066
Olmo Gentile AT 18 80 158146
Nizza Monferrato AT 18 10429 168575
Tigliole AT 18 1699 170274
Torre Bormida CN 18 200 170474
Roccaverano AT 19 399 170873
La Morra CN 19 2724 173597
Belveglio AT 19 350 173947
Roddino CN 19 400 174347
Serravalle Langhe CN 20 315 174662
Pocapaglia CN 20 3339 178001
Azzano d'Asti AT 20 391 178392
Castel Boglione AT 20 609 179001
Ferrere AT 20 1608 180609
Asti AT 20 76202 256811
Cissone CN 20 85 256896
Bistagno AL 20 1887 258783

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Asti (76202 inhabitants)
43 Km W of Alessandria (93943 inhabitants)
47 Km SE of Moncalieri (57294 inhabitants)
52 Km SE of Torino (890529 inhabitants)
54 Km NW of Savona (61345 inhabitants)
59 Km NE of Cuneo (56081 inhabitants)
72 Km W of Genova (586655 inhabitants)
87 Km SW of Vigevano (63310 inhabitants)
89 Km SW of Novara (104380 inhabitants)
95 Km SW of Pavia (72576 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2023-02-07
23:09:02		 44.7287 8.1348 15 2024-03-01
17:18:15		 Bollettino Sismico Italiano INGV 120431691
Reviewed
Rev100 		ML 1.5 2023-02-07
23:09:02		 44.7185 8.142 12 2023-02-07
23:23:38		 Sala Sismica INGV-Roma 114239431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-07 23:09:02 ± 0.18
Latitude 44.7287 ± 0.0054
Longitude 8.1348 ± 0.0076
Depth (km) 15 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120431691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 650
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75273
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 114239431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-07 23:23:38

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 120431691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-24 07:13:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RF.GEPF.HHZ. 2023-02-07T23:10:48.95 3.0 undecidable manual Sn -0.03 0
IV.APEC.HHZ. 2023-02-07T23:09:59.76 3.0 positive manual Pg 5.34 0
SI.MOSI.HHZ. 2023-02-07T23:09:40.46 3.0 positive manual Pn -3.56 0
RD.PGF.BHZ. 2023-02-07T23:09:39.06 3.0 undecidable manual Pn -0.73 0
GU.STV.HHZ. 2023-02-07T23:09:27.33 0.3 undecidable manual S 230 83.5497 93 -0.01 69
GU.ENR.HHZ. 2023-02-07T23:09:26.14 0.6 undecidable manual S 226 79.2651 94 -0.08 46
GU.BHB.HHZ. 2023-02-07T23:09:23.00 0.6 undecidable manual S 280 69.6747 94 -0.66 41
GU.RORO.HHZ. 2023-02-07T23:09:23.17 0.3 undecidable manual S 185 68.5758 94 -0.19 67
GU.CANO.HHZ. 2023-02-07T23:09:20.38 0.6 undecidable manual S 172 58.3971 95 -0.27 45
GU.GBOS.HHZ. 2023-02-07T23:09:20.59 0.3 undecidable manual S 203 58.8966 95 -0.19 69
IV.QLNO.HHZ. 2023-02-07T23:09:17.76 0.3 undecidable manual S 160 47.9187 97 -0.11 71
GU.STV.HHZ. 2023-02-07T23:09:17.42 0.3 undecidable manual P 230 83.5497 93 0.55 61
GU.ENR.HHZ. 2023-02-07T23:09:16.65 0.3 undecidable manual P 226 79.2651 94 0.43 64
GU.RSP.HHZ. 2023-02-07T23:09:15.98 0.3 undecidable manual P 305 82.6506 93 -0.76 57
GU.RORO.HHZ. 2023-02-07T23:09:14.73 0.3 undecidable manual P 185 68.5758 94 0.15 69
GU.RNCA.HHE. 2023-02-07T23:09:14.94 0.3 undecidable manual P 114 70.5738 94 0.06 70
GU.PCP.HHZ. 2023-02-07T23:09:14.88 0.3 undecidable manual S 123 38.5281 99 -0.51 64
GU.BHB.HHZ. 2023-02-07T23:09:14.54 0.3 undecidable manual P 280 69.6747 94 -0.2 68
GU.CANO.HHZ. 2023-02-07T23:09:13.14 0.1 undecidable manual P 172 58.3971 95 0.13 95
GU.GBOS.HHZ. 2023-02-07T23:09:13.34 0.1 undecidable manual P 203 58.8966 95 0.26 92
IV.QLNO.HHZ. 2023-02-07T23:09:11.61 0.1 positive manual P 160 47.9187 97 0.21 95
GU.ROTM.HHZ. 2023-02-07T23:09:11.62 0.6 undecidable manual S 52 21.7671 112 0.56 46
IV.MONC.HHE. 2023-02-07T23:09:10.49 0.3 undecidable manual P 337 41.625 98 0.05 74
GU.PCP.HHZ. 2023-02-07T23:09:09.83 0.1 positive manual P 123 38.5281 99 -0.14 95
GU.ROTM.HHZ. 2023-02-07T23:09:07.66 0.1 undecidable manual P 52 21.7671 112 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ROTM.HHE. ML:2.1 0.0008391364 0.192 AML other m 2023-02-07T23:09:12.01
GU.PCP.HHE. ML:1.2 0.00006231481 0.2048 AML other m 2023-02-07T23:09:15.11
GU.PCP.HHN. ML:1.1 0.000045030185 0.0768 AML other m 2023-02-07T23:09:16.22
GU.ROTM.HHN. ML:2.0 0.0006789944 0.2944 AML other m 2023-02-07T23:09:16.86
IV.QLNO.HHN. ML:1.6 0.00010829999999999999 0.14 AML other m 2023-02-07T23:09:18.55
IV.QLNO.HHE. ML:1.5 0.00009178058999999999 0.1792 AML other m 2023-02-07T23:09:18.62
GU.GBOS.HHN. ML:1.3 0.0000461351545 0.1408 AML other m 2023-02-07T23:09:21.88
GU.CANO.HHN. ML:1.9 0.00016149999999999997 1.76 AML other m 2023-02-07T23:09:21.92
GU.GBOS.HHE. ML:1.3 0.00004571054 0.1408 AML other m 2023-02-07T23:09:22.12
GU.RORO.HHN. ML:1.5 0.00004877847 0.192 AML other m 2023-02-07T23:09:24.11
GU.BHB.HHN. ML:1.4 0.00003962283 0.1536 AML other m 2023-02-07T23:09:24.38
GU.RORO.HHE. ML:1.4 0.000044959430000000004 0.1024 AML other m 2023-02-07T23:09:24.56
GU.BHB.HHE. ML:1.3 0.0000338201735 0.192 AML other m 2023-02-07T23:09:24.86
GU.ENR.HHN. ML:1.8 0.00009065 0.44 AML other m 2023-02-07T23:09:28.60
GU.ENR.HHE. ML:1.8 0.0000838 0.42 AML other m 2023-02-07T23:09:28.76
GU.BHB.HNE. ML:1.5 0.000050638945000000004 0.5888 AML other m 2023-02-07T23:09:29.33
GU.RSP.HHE. ML:0.6 0.0000053249625 0.3072 AML other m 2023-02-07T23:09:29.71
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