Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 30-04-2021 and time 16:27:41 (UTC) in region 3 km NW Pocapaglia (CN)

A magnitude ML 1.3 earthquake occured in region: 3 km NW Pocapaglia (CN), on

  • 30-04-2021 16:27:41 (UTC)
  • 30-04-2021 18:27:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.7420, 7.8700 at 42 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
Pocapaglia CN 3 3339 3339
Sommariva Perno CN 3 2797 6136
Baldissero d'Alba CN 4 1069 7205
Bra CN 5 29737 36942
Montaldo Roero CN 5 844 37786
Sanfrè CN 5 3040 40826
Monticello d'Alba CN 6 2292 43118
Monteu Roero CN 7 1634 44752
Santa Vittoria d'Alba CN 7 2795 47547
Corneliano d'Alba CN 7 2118 49665
Sommariva del Bosco CN 8 6361 56026
Ceresole Alba CN 8 2090 58116
Santo Stefano Roero CN 8 1390 59506
Piobesi d'Alba CN 9 1288 60794
Verduno CN 10 588 61382
Cherasco CN 10 9076 70458
Vezza d'Alba CN 10 2287 72745
Montà CN 11 4733 77478
Caramagna Piemonte CN 11 3034 80512
Roddi CN 11 1607 82119
Canale CN 12 5686 87805
La Morra CN 13 2724 90529
Castagnito CN 13 2163 92692
Guarene CN 13 3596 96288
Grinzane Cavour CN 13 1995 98283
Cervere CN 13 2236 100519
Castellinaldo d'Alba CN 13 938 101457
Pralormo TO 14 1957 103414
Alba CN 14 31437 134851
Marene CN 14 3175 138026
Cisterna d'Asti AT 14 1245 139271
Cavallermaggiore CN 15 5533 144804
Cellarengo AT 15 720 145524
Racconigi CN 16 10038 155562
Barolo CN 16 740 156302
Castiglione Falletto CN 16 700 157002
Magliano Alfieri CN 16 2153 159155
Diano d'Alba CN 16 3570 162725
Cavallerleone CN 16 644 163369
Priocca CN 16 2017 165386
Narzole CN 16 3437 168823
Carmagnola TO 17 29079 197902
Barbaresco CN 17 658 198560
Ferrere AT 18 1608 200168
Novello CN 18 987 201155
Serralunga d'Alba CN 18 564 201719
Treiso CN 18 820 202539
Isolabella TO 19 396 202935
San Damiano d'Asti AT 19 8315 211250
Valfenera AT 19 2462 213712
Monchiero CN 19 571 214283
Montelupo Albese CN 19 529 214812
Salmour CN 19 704 215516
Rodello CN 19 980 216496
Monforte d'Alba CN 19 2056 218552
Govone CN 20 2203 220755
Neive CN 20 3405 224160
Savigliano CN 20 21441 245601
Sinio CN 20 522 246123
Poirino TO 20 10553 256676

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Asti (76202 inhabitants)
32 Km SE of Moncalieri (57294 inhabitants)
40 Km SE of Torino (890529 inhabitants)
46 Km NE of Cuneo (56081 inhabitants)
62 Km W of Alessandria (93943 inhabitants)
68 Km NW of Savona (61345 inhabitants)
92 Km W of Genova (586655 inhabitants)
98 Km SW of Novara (104380 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 1.3 2021-04-30
16:27:41		 44.7425 7.8702 42 2021-07-12
16:55:12		 Bollettino Sismico Italiano INGV 90443971
Reviewed
Rev100 		ML 1.2 2021-04-30
16:27:43		 44.7075 7.8575 19 2021-04-30
16:42:11		 Sala Sismica INGV-Roma 89632151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-30 16:27:41 ± 0.16
Latitude 44.7425 ± 0.0081
Longitude 7.8702 ± 0.0139
Depth (km) 42 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90443971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1179
Semi-minor axis of confidence ellipse (meter) 388
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.42093
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 90443971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-30 12:53:28

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 89632151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-30 16:42:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-04-30T16:29:38.88 3.0 undecidable manual Sn -3.83 0
IV.PE3.EHZ. 2021-04-30T16:29:20.48 3.0 undecidable manual Sn -3.31 0
IV.NDIM.HNZ. 2021-04-30T16:28:57.07 3.0 undecidable manual Sg 1.08 0
IV.SBPO.HNZ. 2021-04-30T16:28:46.04 3.0 undecidable manual Sn -9.99 0
IV.CPGN.EHZ. 2021-04-30T16:28:46.15 3.0 undecidable manual P 1.004 0
GU.IMI.HHZ. 2021-04-30T16:28:09.30 0.3 undecidable manual S 179 92.3409 95 0.17 68
GU.CIRO.HHE. 2021-04-30T16:28:08.62 0.6 undecidable manual S 346 98.2239 95 -1.78 22
GU.RRL.HHE. 2021-04-30T16:28:08.43 0.6 undecidable manual S 284 87.246 96 0.38 43
FR.SAOF.HHE.00 2021-04-30T16:28:08.37 0.3 undecidable manual S 197 87.6456 96 0.25 67
RD.ORIF.BHE. 2021-04-30T16:28:08.62 0.3 undecidable manual P 278 157.7199 92 2.84 6
IV.MILN.HNZ. 2021-04-30T16:28:07.20 3.0 positive manual P 0.88 0
GU.TRAV.HHE. 2021-04-30T16:28:05.90 0.6 undecidable manual S 354 85.9473 96 -1.87 21
GU.RORO.HHE. 2021-04-30T16:28:04.35 0.6 undecidable manual S 167 71.5728 99 -0.35 45
GU.STV.HHE. 2021-04-30T16:28:03.58 0.3 undecidable manual S 218 69.9744 99 -0.77 58
GU.CANO.HHE. 2021-04-30T16:28:03.25 0.3 undecidable manual S 154 66.0894 101 -0.28 69
GU.ENR.HHZ. 2021-04-30T16:28:03.53 0.6 undecidable manual S 212 67.1772 100 -0.24 46
IV.MRGE.HHE. 2021-04-30T16:28:02.47 0.3 undecidable manual P 331 130.2696 93 0.11 63
GU.PZZ.HHE. 2021-04-30T16:28:02.31 0.6 undecidable manual S 247 65.0904 101 -1 35
GU.RSP.HHE. 2021-04-30T16:28:02.55 0.6 undecidable manual S 314 65.49 101 -0.84 39
GU.PCP.HHE. 2021-04-30T16:28:01.30 0.3 undecidable manual S 112 57.7977 105 -0.49 67
IV.QLNO.HHZ. 2021-04-30T16:28:01.61 0.3 undecidable manual S 141 59.6958 104 -0.58 64
GU.GBOS.HHE. 2021-04-30T16:28:01.33 0.6 undecidable manual S 182 55.5999 106 -0.01 49
IV.MONC.HHZ. 2021-04-30T16:27:59.41 0.6 undecidable manual S 7 37.0296 124 1.7 25
GU.BHB.HHZ. 2021-04-30T16:27:59.45 0.3 undecidable manual S 282 48.9177 112 -0.52 68
IV.SARZ.HHZ. 2021-04-30T16:27:58.73 3.0 undecidable manual S -9.99 0
GU.IMI.HHZ. 2021-04-30T16:27:57.95 0.1 undecidable manual P 179 92.3409 95 0.3 88
GU.CIRO.HHE. 2021-04-30T16:27:57.69 0.1 undecidable manual P 346 98.2239 95 -0.69 78
GU.RRL.HHE. 2021-04-30T16:27:57.81 0.1 undecidable manual P 284 87.246 96 0.79 75
FR.SAOF.HHE.00 2021-04-30T16:27:57.74 0.1 undecidable manual P 197 87.6456 96 0.68 79
GU.RNCA.HHE. 2021-04-30T16:27:57.76 0.3 undecidable manual P 109 90.5427 95 0.34 65
GU.TRAV.HHE. 2021-04-30T16:27:56.09 0.3 undecidable manual P 354 85.9473 96 -0.77 58
GU.CANO.HHE. 2021-04-30T16:27:54.47 0.3 undecidable manual P 154 66.0894 101 0.06 73
GU.RSP.HHE. 2021-04-30T16:27:54.98 0.3 undecidable manual P 314 65.49 101 0.65 62
GU.PZZ.HHE. 2021-04-30T16:27:54.21 0.1 undecidable manual P 247 65.0904 101 -0.07 96
GU.ENR.HHZ. 2021-04-30T16:27:54.98 0.3 undecidable manual P 212 67.1772 100 0.43 67
GU.STV.HHE. 2021-04-30T16:27:54.98 0.3 undecidable manual P 218 69.9744 99 0.09 72
GU.RORO.HHE. 2021-04-30T16:27:54.75 0.3 undecidable manual P 167 71.5728 99 -0.34 67
GU.GBOS.HHE. 2021-04-30T16:27:53.72 0.3 undecidable manual P 182 55.5999 106 0.58 66
IV.SARZ.HHZ. 2021-04-30T16:27:53.71 3.0 undecidable manual P -4.46 0
GU.PCP.HHE. 2021-04-30T16:27:53.39 0.1 undecidable manual P 112 57.7977 105 -0.01 99
IV.QLNO.HHZ. 2021-04-30T16:27:53.90 0.3 undecidable manual P 141 59.6958 104 0.26 70
GU.BHB.HHZ. 2021-04-30T16:27:52.30 0.1 undecidable manual P 282 48.9177 112 -0.05 100
IV.MONC.HHZ. 2021-04-30T16:27:52.01 0.1 undecidable manual P 7 37.0296 124 0.96 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MONC.HHE. ML:1.1 0.000031517045 0.2176 AML other m 2021-04-30T16:27:59.78
GU.BHB.HHE. ML:1.3 0.00004215 0.62 AML other m 2021-04-30T16:28:00.05
GU.BHB.HHN. ML:1.3 0.000037844365 1.7952 AML other m 2021-04-30T16:28:00.10
IV.MONC.HHN. ML:1.4 0.000055092645000000005 0.4096 AML other m 2021-04-30T16:28:02.29
IV.QLNO.HHN. ML:1.1 0.000018032745 0.1664 AML other m 2021-04-30T16:28:03.23
IV.QLNO.HHE. ML:1.1 0.000017599595 0.1792 AML other m 2021-04-30T16:28:03.64
GU.ENR.HHN. ML:1.3 0.0000289146 0.1664 AML other m 2021-04-30T16:28:03.78
GU.ENR.HHE. ML:1.6 0.00005915 0.96 AML other m 2021-04-30T16:28:04.25
GU.CIRO.HHN. ML:1.2 0.0000166 0.4 AML other m 2021-04-30T16:28:09.39
GU.CIRO.HHE. ML:1.4 0.0000207 0.82 AML other m 2021-04-30T16:28:09.25
GU.IMI.HHN. ML:1.3 0.000021959145000000004 0.2176 AML other m 2021-04-30T16:28:10.05
GU.IMI.HHE. ML:1.2 0.000013785475 1.3312 AML other m 2021-04-30T16:28:10.41
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