Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 07-02-2023 and time 22:57:54 (UTC) in region 1 km SW Coazzolo (AT)

A magnitude ML 1.0 earthquake occured in region: 1 km SW Coazzolo (AT), on

  • 07-02-2023 22:57:54 (UTC)
  • 07-02-2023 23:57:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.7190, 8.1350 at 14 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 2 3405 3707
Neviglie CN 3 382 4089
Mango CN 4 1308 5397
Castagnole delle Lanze AT 4 3798 9195
Barbaresco CN 4 658 9853
Castiglione Tinella CN 4 895 10748
Treiso CN 5 820 11568
Trezzo Tinella CN 5 331 11899
Camo CN 5 201 12100
Cossano Belbo CN 8 958 13058
Magliano Alfieri CN 8 2153 15211
Santo Stefano Belbo CN 8 3984 19195
Calosso AT 8 1279 20474
Alba CN 8 31437 51911
Guarene CN 8 3596 55507
Costigliole d'Asti AT 9 5914 61421
Castagnito CN 9 2163 63584
Rocchetta Belbo CN 10 167 63751
Priocca CN 10 2017 65768
Govone CN 10 2203 67971
Castellinaldo d'Alba CN 10 938 68909
Benevello CN 10 474 69383
Borgomale CN 11 381 69764
Diano d'Alba CN 11 3570 73334
San Martino Alfieri AT 11 666 74000
Loazzolo AT 11 359 74359
Rodello CN 11 980 75339
Cessole AT 12 403 75742
Vesime AT 12 622 76364
Castino CN 12 483 76847
Vezza d'Alba CN 12 2287 79134
Canelli AT 12 10485 89619
Agliano Terme AT 12 1642 91261
Moasca AT 12 494 91755
Piobesi d'Alba CN 12 1288 93043
Montelupo Albese CN 13 529 93572
Isola d'Asti AT 13 2071 95643
Bosia CN 13 177 95820
Lequio Berria CN 13 487 96307
Roddi CN 13 1607 97914
San Marzano Oliveto AT 13 1047 98961
Cassinasco AT 14 611 99572
Grinzane Cavour CN 14 1995 101567
Corneliano d'Alba CN 14 2118 103685
San Damiano d'Asti AT 14 8315 112000
Bubbio AT 14 893 112893
Antignano AT 14 974 113867
Montegrosso d'Asti AT 14 2344 116211
Canale CN 14 5686 121897
Castelnuovo Calcea AT 14 759 122656
San Giorgio Scarampi AT 15 122 122778
Perletto CN 15 292 123070
Albaretto della Torre CN 15 242 123312
Vigliano d'Asti AT 15 835 124147
Arguello CN 15 199 124346
Monticello d'Alba CN 15 2292 126638
Celle Enomondo AT 15 484 127122
Montaldo Scarampi AT 16 755 127877
Revigliasco d'Asti AT 16 767 128644
Cisterna d'Asti AT 16 1245 129889
Sinio CN 16 522 130411
Mongardino AT 16 921 131332
Cortemilia CN 16 2331 133663
Calamandrana AT 16 1761 135424
Santa Vittoria d'Alba CN 16 2795 138219
Serralunga d'Alba CN 16 564 138783
Castiglione Falletto CN 16 700 139483
Cravanzana CN 16 411 139894
Cerretto Langhe CN 16 442 140336
Mombercelli AT 17 2259 142595
Rocchetta Palafea AT 17 338 142933
Verduno CN 17 588 143521
Sessame AT 17 271 143792
Monastero Bormida AT 17 931 144723
Santo Stefano Roero CN 17 1390 146113
Olmo Gentile AT 17 80 146193
Montà CN 17 4733 150926
Torre Bormida CN 17 200 151126
Montaldo Roero CN 18 844 151970
Vinchio AT 18 601 152571
Monteu Roero CN 18 1634 154205
Roccaverano AT 18 399 154604
Baldissero d'Alba CN 18 1069 155673
Sommariva Perno CN 18 2797 158470
La Morra CN 18 2724 161194
Vaglio Serra AT 18 275 161469
Roddino CN 19 400 161869
Serravalle Langhe CN 19 315 162184
Nizza Monferrato AT 19 10429 172613
Cissone CN 19 85 172698
Tigliole AT 19 1699 174397
Bergolo CN 19 71 174468
Barolo CN 19 740 175208
Castel Boglione AT 20 609 175817
Pocapaglia CN 20 3339 179156
Feisoglio CN 20 316 179472
Bistagno AL 20 1887 181359
Belveglio AT 20 350 181709
Monforte d'Alba CN 20 2056 183765

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Asti (76202 inhabitants)
44 Km W of Alessandria (93943 inhabitants)
47 Km SE of Moncalieri (57294 inhabitants)
53 Km SE of Torino (890529 inhabitants)
53 Km NW of Savona (61345 inhabitants)
59 Km NE of Cuneo (56081 inhabitants)
72 Km W of Genova (586655 inhabitants)
88 Km SW of Vigevano (63310 inhabitants)
90 Km SW of Novara (104380 inhabitants)
96 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 1.0 2023-02-07
22:57:54		 44.7193 8.1353 14 2024-03-01
17:18:15		 Bollettino Sismico Italiano INGV 120431621
Reviewed
Rev100 		ML 1.3 2023-02-07
22:57:54		 44.7162 8.1368 15 2023-02-07
23:13:14		 Sala Sismica INGV-Roma 114238841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-07 22:57:54 ± 0.11
Latitude 44.7193 ± 0.0054
Longitude 8.1353 ± 0.0063
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120431621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 568
Semi-minor axis of confidence ellipse (meter) 275
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.20145
Epicentral distance of station farthest from the epicenter (degree) 0.75633
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 114238841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-07 23:13:14

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 120431621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-24 07:11:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PZZ.HHE. 2023-02-07T22:58:19.09 0.6 undecidable manual S 254 83.9493 93 -0.26 44
GU.STV.HHE. 2023-02-07T22:58:18.84 0.6 undecidable manual S 231 82.8504 93 -0.23 44
GU.ENR.HHZ. 2023-02-07T22:58:17.95 0.6 undecidable manual S 227 78.5658 93 0.02 45
GU.BHB.HHZ. 2023-02-07T22:58:14.69 0.6 undecidable manual S 281 69.8745 93 -0.93 37
GU.RORO.HHE. 2023-02-07T22:58:14.78 0.6 undecidable manual S 185 67.4769 93 -0.2 45
GU.CANO.HHE. 2023-02-07T22:58:12.11 0.3 undecidable manual S 172 57.2982 94 -0.16 69
GU.GBOS.HHZ. 2023-02-07T22:58:12.31 0.6 undecidable manual S 204 57.8976 94 -0.11 47
GU.STV.HHE. 2023-02-07T22:58:09.14 0.3 undecidable manual P 231 82.8504 93 0.46 62
IV.QLNO.HHZ. 2023-02-07T22:58:09.41 0.3 undecidable manual S 159 46.9197 95 -0.08 71
GU.ENR.HHZ. 2023-02-07T22:58:08.53 0.3 undecidable manual P 227 78.5658 93 0.51 61
GU.PZZ.HHE. 2023-02-07T22:58:08.89 0.3 undecidable manual P 254 83.9493 93 0.05 67
GU.PCP.HHZ. 2023-02-07T22:58:06.83 0.3 undecidable manual S 121 37.9287 97 -0.28 69
GU.BHB.HHZ. 2023-02-07T22:58:06.24 0.3 undecidable manual P 281 69.8745 93 -0.44 65
GU.RORO.HHE. 2023-02-07T22:58:06.50 0.1 undecidable manual P 185 67.4769 93 0.18 91
GU.GBOS.HHZ. 2023-02-07T22:58:05.03 0.3 undecidable manual P 204 57.8976 94 0.19 69
GU.CANO.HHE. 2023-02-07T22:58:04.92 0.1 undecidable manual P 172 57.2982 94 0.17 93
GU.ROTM.HHZ. 2023-02-07T22:58:03.34 0.3 undecidable manual S 50 22.3554 107 0.3 72
IV.QLNO.HHZ. 2023-02-07T22:58:03.36 0.1 positive manual P 159 46.9197 95 0.22 94
IV.MONC.HHE. 2023-02-07T22:58:02.63 0.3 undecidable manual P 337 42.624 96 0.14 71
GU.PCP.HHZ. 2023-02-07T22:58:01.56 0.1 undecidable manual P 121 37.9287 97 -0.21 94
GU.ROTM.HHZ. 2023-02-07T22:57:59.32 0.1 undecidable manual P 50 22.3554 107 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ROTM.HHN. ML:1.4 0.00016296939999999998 0.1664 AML other m 2023-02-07T22:58:03.43
GU.ROTM.HHE. ML:1.6 0.00026404479999999996 0.2304 AML other m 2023-02-07T22:58:03.69
GU.PCP.HHE. ML:0.8 0.000018399465 0.2176 AML other m 2023-02-07T22:58:06.96
GU.PCP.HHN. ML:0.8 0.00001759484 0.064 AML other m 2023-02-07T22:58:07.74
IV.QLNO.HHE. ML:1.0 0.00002663312 0.0768 AML other m 2023-02-07T22:58:09.59
IV.QLNO.HHN. ML:1.0 0.000031598845 0.128 AML other m 2023-02-07T22:58:10.32
GU.GBOS.HHE. ML:0.7 0.0000114914695 0.2816 AML other m 2023-02-07T22:58:12.47
GU.GBOS.HHN. ML:1.0 0.0000178283425 0.1152 AML other m 2023-02-07T22:58:13.59
GU.ENR.HHN. ML:1.2 0.000024729045 0.0384 AML other m 2023-02-07T22:58:19.45
GU.ENR.HHE. ML:1.2 0.000027123905000000003 0.064 AML other m 2023-02-07T22:58:19.60
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