Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 09-09-2019 and time 03:12:09 (UTC) in region 2 km S Ponzone (AL)

A magnitude ML 1.6 earthquake occured in region: 2 km S Ponzone (AL), on

  • 09-09-2019 03:12:09 (UTC)
  • 09-09-2019 05:12:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5680, 8.4630 at 8 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
Ponzone AL 2 1051 1051
Malvicino AL 4 85 1136
Cartosio AL 4 747 1883
Morbello AL 6 402 2285
Cavatore AL 7 291 2576
Montechiaro d'Acqui AL 7 560 3136
Grognardo AL 7 259 3395
Castelletto d'Erro AL 8 148 3543
Pareto AL 9 554 4097
Cassinelle AL 9 914 5011
Melazzo AL 9 1325 6336
Mioglia SV 10 526 6862
Sassello SV 10 1777 8639
Ponti AL 10 606 9245
Spigno Monferrato AL 10 1050 10295
Mombaldone AT 11 209 10504
Denice AL 11 176 10680
Prasco AL 11 521 11201
Visone AL 11 1194 12395
Terzo AL 12 923 13318
Acqui Terme AL 12 19896 33214
Cremolino AL 13 1086 34300
Molare AL 13 2181 36481
Morsasco AL 13 679 37160
Bistagno AL 13 1887 39047
Tiglieto GE 13 546 39593
Urbe SV 14 700 40293
Pontinvrea SV 14 847 41140
Monastero Bormida AT 14 931 42071
Merana AL 14 189 42260
Giusvalla SV 14 441 42701
Trisobbio AL 14 655 43356
Sessame AT 15 271 43627
Roccaverano AT 15 399 44026
Piana Crixia SV 15 788 44814
Strevi AL 15 2019 46833
Montabone AT 16 333 47166
Orsara Bormida AL 16 424 47590
Serole AT 16 123 47713
Montaldo Bormida AL 16 664 48377
Rossiglione GE 17 2779 51156
Ovada AL 17 11477 62633
Carpeneto AL 17 977 63610
Belforte Monferrato AL 17 515 64125
Bubbio AT 17 893 65018
Castel Rocchero AT 17 395 65413
Olmo Gentile AT 17 80 65493
Rivalta Bormida AL 18 1446 66939
Alice Bel Colle AL 18 766 67705
Dego SV 18 1985 69690
San Giorgio Scarampi AT 18 122 69812
Rocchetta Palafea AT 18 338 70150
Castel Boglione AT 18 609 70759
Tagliolo Monferrato AL 18 1581 72340
Ricaldone AL 18 684 73024
Cassinasco AT 19 611 73635
Rocca Grimalda AL 19 1512 75147
Campo Ligure GE 19 2955 78102
Stella SV 19 3009 81111
Cessole AT 20 403 81514
Loazzolo AT 20 359 81873

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Savona (61345 inhabitants)
40 Km SW of Alessandria (93943 inhabitants)
41 Km W of Genova (586655 inhabitants)
42 Km SE of Asti (76202 inhabitants)
75 Km E of Cuneo (56081 inhabitants)
78 Km SE of Moncalieri (57294 inhabitants)
83 Km SE of Torino (890529 inhabitants)
88 Km SW of Pavia (72576 inhabitants)
89 Km SW of Vigevano (63310 inhabitants)
99 Km S of Novara (104380 inhabitants)
99 Km NE of Sanremo (54807 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 1.6 2019-09-09
03:12:09		 44.5683 8.4632 8 2020-02-28
16:41:49		 Bollettino Sismico Italiano INGV 72313521
Reviewed
Rev100 		ML 1.6 2019-09-09
03:12:09		 44.5663 8.4568 7 2019-09-09
03:23:54		 Sala Sismica INGV-Roma 72245971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-09 03:12:09 ± 0.06
Latitude 44.5683 ± 0.0036
Longitude 8.4632 ± 0.0063
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72313521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 423
Semi-minor axis of confidence ellipse (meter) 390
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 25
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.07109
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 72313521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-11 14:02:20

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 72245971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-09 03:23:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2019-09-09T03:13:56.02 3.0 undecidable manual Pg 18.870001 0
IV.VCRE.HHZ. 2019-09-09T03:13:48.41 3.0 negative manual Pg 10.43 0
IV.ATFO.HHZ. 2019-09-09T03:13:44.62 3.0 undecidable manual Sn 0.94 0
IV.APEC.HHZ. 2019-09-09T03:13:40.31 3.0 undecidable manual Sn 0.89 0
IV.MIDA.HHZ. 2019-09-09T03:13:37.80 3.0 undecidable manual Pg 8.38 0
IV.PTRJ.HNZ. 2019-09-09T03:13:33.54 3.0 negative manual Pn -0.44 0
IV.MTRA.EHZ. 2019-09-09T03:13:24.82 3.0 undecidable manual Pg 11.01 0
IV.ARRO.EHZ. 2019-09-09T03:13:14.16 3.0 positive manual Pg 4.6 0
IV.CPGN.EHZ. 2019-09-09T03:13:05.46 3.0 undecidable manual Pg 7.16 0
IV.FOSV.EHZ. 2019-09-09T03:13:03.89 3.0 negative manual Pn -0.93 0
IV.RIBO.EHZ.01 2019-09-09T03:12:53.61 3.0 negative manual Pg 1.04 0
GU.TRAV.HHZ. 2019-09-09T03:12:30.24 0.6 undecidable manual P 332 118.8921 50 0.33 38
GU.RSP.HNN. 2019-09-09T03:12:28.75 0.6 undecidable manual P 305 114.0969 50 -0.42 38
GU.PZZ.HHZ. 2019-09-09T03:12:28.17 0.3 undecidable manual P 267 106.7154 50 0.13 61
FR.SAOF.HHZ.00 2019-09-09T03:12:26.93 0.6 undecidable manual P 229 96.9252 50 0.4 39
GU.STV.HHZ. 2019-09-09T03:12:26.88 0.6 undecidable manual P 249 96.9252 50 0.34 40
GU.BHB.HHZ. 2019-09-09T03:12:26.52 0.6 undecidable manual P 288 99.123 50 -0.35 40
GU.ENR.HHZ. 2019-09-09T03:12:25.94 0.3 undecidable manual P 246 90.9423 50 0.34 61
IV.MSSA.HHZ. 2019-09-09T03:12:25.37 0.1 undecidable manual P 108 88.0452 50 0.21 84
IV.IMI.HHE. 2019-09-09T03:12:25.28 0.6 undecidable manual P 212 85.8474 50 0.45 40
GU.CANO.HHZ. 2019-09-09T03:12:24.33 0.6 undecidable manual S 204 43.8228 50 -0.34 44
GU.RNCA.HHZ. 2019-09-09T03:12:23.41 0.3 undecidable manual S 105 40.1265 50 -0.25 68
GU.ROTM.HHZ. 2019-09-09T03:12:21.52 0.3 undecidable manual S 344 32.3454 103 0.27 69
GU.GORR.HHE. 2019-09-09T03:12:21.68 0.3 undecidable manual P 86 65.6898 50 -0.03 68
GU.GBOS.HHZ. 2019-09-09T03:12:20.94 0.3 undecidable manual P 234 61.2942 50 -0.09 68
GU.RORO.HHZ. 2019-09-09T03:12:20.50 0.3 undecidable manual P 212 59.5959 50 -0.28 65
IV.SARZ.HHE. 2019-09-09T03:12:19.48 0.3 undecidable manual P 47 48.618 50 0.4 65
IV.QLNO.HHZ. 2019-09-09T03:12:19.75 0.3 undecidable manual S 199 28.6491 105 -0.24 69
GU.CANO.HHZ. 2019-09-09T03:12:18.12 0.1 undecidable manual P 204 43.8228 50 -0.23 90
GU.RNCA.HHZ. 2019-09-09T03:12:17.29 0.6 undecidable manual P 105 40.1265 50 -0.48 43
GU.ROTM.HHZ. 2019-09-09T03:12:16.50 0.3 undecidable manual P 344 32.3454 103 0.12 71
IV.QLNO.HHZ. 2019-09-09T03:12:15.80 0.1 positive manual P 199 28.6491 105 0.15 94
IT.ACQ.HGZ. 2019-09-09T03:12:14.26 0.3 undecidable manual S 360 12.6762 121 -0.58 65
GU.PCP.HHE. 2019-09-09T03:12:13.37 0.1 undecidable manual S 115 7.1928 137 0.05 100
GU.PCP.HHE. 2019-09-09T03:12:12.10 0.1 undecidable manual P 115 7.1928 137 0.3 95
IT.ACQ.HGZ. 2019-09-09T03:12:12.44 0.1 undecidable manual P 360 12.6762 121 -0.23 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHN. ML:1.4 0.00011999999999999999 0.58 AML other m 2019-09-09T03:12:21.53
GU.ROTM.HHN. ML:2.3 0.0009865 0.2 AML other m 2019-09-09T03:12:21.99
GU.ROTM.HHE. ML:2.1 0.0005669999999999999 0.22 AML other m 2019-09-09T03:12:21.88
IV.QLNO.HHE. ML:1.3 0.00010995 0.56 AML other m 2019-09-09T03:12:22.66
GU.CANO.HHN. ML:2.1 0.00043000000000000004 0.2 AML other m 2019-09-09T03:12:25.22
GU.CANO.HHE. ML:1.7 0.0001665 0.64 AML other m 2019-09-09T03:12:25.95
GU.GBOS.HHN. ML:2.0 0.00022150000000000002 0.62 AML other m 2019-09-09T03:12:28.68
GU.GBOS.HHE. ML:1.4 0.0000466 0.22 AML other m 2019-09-09T03:12:29.76
GU.RORO.HHN. ML:1.3 0.000045303949999999995 0.1008 AML other m 2019-09-09T03:12:30.86
GU.ENR.HHN. ML:1.4 0.0000317694 0.1008 AML other m 2019-09-09T03:12:38.92
GU.ENR.HHE. ML:1.4 0.000030510950000000003 0.0592 AML other m 2019-09-09T03:12:39.59
GU.BHB.HHN. ML:1.4 0.000024184405 0.24 AML other m 2019-09-09T03:12:41.19
GU.BHB.HHE. ML:1.5 0.00003426943 0.16 AML other m 2019-09-09T03:12:41.65
GU.PZZ.HHN. ML:1.7 0.00004285 0.46 AML other m 2019-09-09T03:12:43.27
GU.PZZ.HHE. ML:1.6 0.000040050000000000004 0.7 AML other m 2019-09-09T03:12:45.22
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