Earthquake with magnitude of ML 2.3 on date 17-09-2023 and time 19:50:42 (Italy) in region 2 km SW Brignano Frascata (AL)

A magnitude ML 2.3 earthquake occured in region: 2 km SW Brignano Frascata (AL), on

  • 17-09-2023 17:50:42 (UTC)
  • 17-09-2023 19:50:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.7960, 9.0250 at 8 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
Brignano-Frascata AL 2 456 456
Garbagna AL 3 696 1152
San Sebastiano Curone AL 3 583 1735
Dernice AL 4 185 1920
Casasco AL 4 129 2049
Avolasca AL 5 294 2343
Momperone AL 5 223 2566
Montemarzino AL 6 341 2907
Gremiasco AL 6 324 3231
Montegioco AL 7 313 3544
Montacuto AL 7 278 3822
Cecima PV 7 236 4058
Castellania AL 7 90 4148
Costa Vescovato AL 8 335 4483
Sant'Agata Fossili AL 8 425 4908
Bagnaria PV 9 658 5566
Ponte Nizza PV 9 807 6373
Cantalupo Ligure AL 9 527 6900
Cerreto Grue AL 9 323 7223
Pozzol Groppo AL 9 328 7551
Borghetto di Borbera AL 9 1966 9517
Carezzano AL 10 431 9948
Rocchetta Ligure AL 10 200 10148
Sardigliano AL 10 406 10554
Monleale AL 11 566 11120
Berzano di Tortona AL 11 157 11277
Volpedo AL 11 1227 12504
Paderna AL 11 220 12724
Albera Ligure AL 11 325 13049
Gavazzana AL 11 180 13229
Fabbrica Curone AL 11 656 13885
Sarezzano AL 12 1171 15056
Godiasco Salice Terme PV 12 3229 18285
Grondona AL 12 510 18795
Volpeglino AL 12 148 18943
Villaromagnano AL 12 715 19658
Spineto Scrivia AL 13 337 19995
Cassano Spinola AL 13 1731 21726
Roccaforte Ligure AL 13 136 21862
Villalvernia AL 13 955 22817
Carbonara Scrivia AL 14 1122 23939
Casalnoceto AL 14 980 24919
Castellar Guidobono AL 14 399 25318
Varzi PV 14 3279 28597
Vignole Borbera AL 14 2182 30779
Rocca Susella PV 14 225 31004
Stazzano AL 15 2486 33490
Cabella Ligure AL 15 528 34018
Val di Nizza PV 15 624 34642
Viguzzolo AL 15 3148 37790
Montesegale PV 15 298 38088
Rivanazzano Terme PV 15 5312 43400
Serravalle Scrivia AL 16 6128 49528
Arquata Scrivia AL 16 6409 55937
Tortona AL 17 27437 83374
Retorbido PV 17 1538 84912
Santa Margherita di Staffora PV 17 473 85385
Isola del Cantone GE 18 1540 86925
Mongiardino Ligure AL 18 165 87090
Valverde PV 18 287 87377
Fortunago PV 19 390 87767
Codevilla PV 19 997 88764
Pozzolo Formigaro AL 19 4775 93539
Novi Ligure AL 19 28154 121693
Pontecurone AL 20 3723 125416

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Alessandria (93943 inhabitants)
43 Km N of Genova (586655 inhabitants)
45 Km S of Pavia (72576 inhabitants)
60 Km S of Vigevano (63310 inhabitants)
60 Km W of Piacenza (102191 inhabitants)
66 Km E of Asti (76202 inhabitants)
69 Km NE of Savona (61345 inhabitants)
76 Km S of Milano (1345851 inhabitants)
79 Km SE of Novara (104380 inhabitants)
82 Km S of Rho (50434 inhabitants)
84 Km S of Sesto San Giovanni (81608 inhabitants)
86 Km S of Cinisello Balsamo (75078 inhabitants)
87 Km W of Cremona (71901 inhabitants)
89 Km S of Legnano (60262 inhabitants)
90 Km S of Monza (122671 inhabitants)
92 Km S of Busto Arsizio (83106 inhabitants)
98 Km S of Gallarate (53343 inhabitants)
100 Km NW of La Spezia (93959 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
Reviewed
Rev100
ML 2.3 2023-09-17
17:50:42
44.7962 9.0248 8 2023-09-17
18:05:43
Sala Sismica INGV-Roma 121140891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-17 17:50:42 ± 0.11
Latitude 44.7962 ± 0.0036
Longitude 9.0248 ± 0.0063
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121140891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 427
Semi-minor axis of confidence ellipse (meter) 363
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.24651
Number of stations at which the event was observed 54
Number of stations from which data was used for origin computation 34
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 79
Type of magnitude ML
Reference to an origin 121140891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-17 18:05:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2023-09-17T17:52:33.45 3.0 undecidable manual Sg 15.98 0
IX.SCL3.EHZ.02 2023-09-17T17:52:21.46 3.0 undecidable manual Pn 6.7 0
IV.NRCA.HHZ. 2023-09-17T17:52:20.90 3.0 undecidable manual Sn 1.59 0
IV.FDMO.HHZ. 2023-09-17T17:52:18.42 3.0 undecidable manual Sn 2.23 0
IV.ARRO.EHZ. 2023-09-17T17:52:14.09 3.0 undecidable manual Sn -3.97 0
IV.FRON.EHZ. 2023-09-17T17:52:10.89 3.0 undecidable manual Sn 6.07 0
SL.KOGS.BHZ. 2023-09-17T17:52:08.82 3.0 undecidable manual Pn 6.86 0
IV.ATMI.HHZ. 2023-09-17T17:51:59.94 3.0 undecidable manual Sn 0.03 0
IV.SFI.EHZ. 2023-09-17T17:51:57.23 3.0 undecidable manual Sg 10.53 0
IV.NRCA.HHZ. 2023-09-17T17:51:49.74 3.0 positive manual Pg 12.63 0
RD.ORIF.BHZ. 2023-09-17T17:51:49.70 3.0 undecidable manual Sn 2.63 0
IV.CIMA.HNZ. 2023-09-17T17:51:38.61 3.0 negative manual Pn -0.15 0
IV.CSP1.EHZ. 2023-09-17T17:51:38.34 3.0 undecidable manual Pn 2.36 0
IV.ATPI.EHZ. 2023-09-17T17:51:28.51 3.0 positive manual Pn 1.97 0
RD.PGF.BHZ. 2023-09-17T17:51:18.44 3.0 negative manual P 249.3615 -2.07 0
CH.BNALP.HHZ. 2023-09-17T17:51:18.83 0.6 undecidable manual P 349 234.6873 38 0.14 32
CH.DAVOX.HHZ. 2023-09-17T17:51:18.30 0.6 negative manual P 16 229.7922 38 0.22 33
ST.DOSS.HHZ. 2023-09-17T17:51:15.28 3.0 positive manual Pn 0.79 0
CH.DIX.HHZ. 2023-09-17T17:51:13.21 0.6 negative manual P 319 190.0653 38 0.08 43
IV.MRGE.HHZ. 2023-09-17T17:51:12.18 3.0 positive manual Pn 0.44 0
CH.FUSIO.HHZ. 2023-09-17T17:51:12.64 0.3 undecidable manual P 351 186.1692 38 0 67
IV.MABI.HHZ. 2023-09-17T17:51:12.51 0.6 undecidable manual P 39 181.485 38 0.45 42
SI.LUSI.HHZ. 2023-09-17T17:51:12.62 3.0 undecidable manual P 197.4579 -1.44 0
ST.RONC.EHZ. 2023-09-17T17:51:11.76 1.0 undecidable manual P 43 180.9855 38 -0.24 22
ST.VARA.EHZ. 2023-09-17T17:51:11.71 1.0 undecidable manual P 51 185.37 38 -0.84 18
GU.RRL.HHZ. 2023-09-17T17:51:10.43 3.0 negative manual Pn 0.29 0
GU.POPM.HHZ. 2023-09-17T17:51:09.33 0.3 undecidable manual P 121 160.5171 50 0.41 70
IV.MAGA.HHZ. 2023-09-17T17:51:09.49 0.6 undecidable manual P 48 165.7119 50 -0.22 48
GU.LSD.HHZ. 2023-09-17T17:51:07.50 3.0 undecidable manual P 165.3123 -2.14 0
IV.SALO.HHZ. 2023-09-17T17:51:07.55 0.6 undecidable manual P 52 148.5402 50 0.49 48
GU.STV.HHZ. 2023-09-17T17:51:06.63 0.6 undecidable manual P 246 147.6411 50 -0.29 51
GU.SATI.HHZ. 2023-09-17T17:51:06.47 0.6 undecidable manual P 323 149.8389 50 -0.8 43
FR.SAOF.HHZ.00 2023-09-17T17:51:06.64 0.6 undecidable manual P 233 147.2415 50 -0.23 51
GU.CARD.HHZ. 2023-09-17T17:51:06.20 0.6 undecidable manual P 126 143.6451 50 -0.11 53
GU.CIRO.HHZ. 2023-09-17T17:51:05.87 1.0 undecidable manual P 309 144.744 50 -0.61 23
GU.BHB.HHZ. 2023-09-17T17:51:05.77 1.0 undecidable manual P 272 138.6612 50 0.22 26
MN.VLC.HHZ. 2023-09-17T17:51:04.01 0.6 undecidable manual P 123 128.871 50 -0.02 56
GU.IMI.HHZ. 2023-09-17T17:51:04.53 0.3 undecidable manual P 223 133.0668 50 -0.15 81
IV.MDI.HHZ. 2023-09-17T17:51:03.02 0.3 undecidable manual P 26 120.6903 50 0.24 82
GU.TRAV.HHZ. 2023-09-17T17:51:03.23 0.3 undecidable manual P 309 127.7721 50 -0.63 72
CH.MUGIO.HHZ. 2023-09-17T17:51:03.17 0.3 undecidable manual P 1 124.8861 50 -0.25 81
IV.VARE.HHZ. 2023-09-17T17:51:02.80 0.3 undecidable manual P 351 120.4905 50 0.05 85
GU.EQUI.HHZ. 2023-09-17T17:51:01.51 0.3 undecidable manual P 128 113.3976 50 -0.14 85
GU.GBOS.HHZ. 2023-09-17T17:51:01.80 0.6 undecidable manual P 237 112.0989 50 0.35 54
GU.ROTM.HHZ. 2023-09-17T17:51:00.59 0.6 undecidable manual S 277 53.2023 50 0.83 51
GU.RORO.HHZ. 2023-09-17T17:51:00.87 0.3 undecidable manual P 225 107.3148 50 0.17 85
IV.MONC.HHZ. 2023-09-17T17:50:59.56 3.0 undecidable manual P 91.5417 1.28 0
4P.IT06A.HHZ. 2023-09-17T17:50:59.14 0.3 undecidable manual P 253 94.8384 50 0.35 84
GU.PCP.HHZ. 2023-09-17T17:50:57.93 0.3 undecidable manual S 233 47.2194 50 -0.22 94
GU.GENL.EHE. 2023-09-17T17:50:57.00 0.6 undecidable manual S 186 43.5231 50 -0.17 64
GU.GRAM.HHZ. 2023-09-17T17:50:57.67 0.3 undecidable manual P 112 88.8444 50 -0.19 88
IT.GNV.HGN. 2023-09-17T17:50:56.52 0.3 undecidable manual S 190 41.1255 50 0 100
IV.QLNO.HHZ. 2023-09-17T17:50:55.41 0.3 undecidable manual P 226 74.9694 50 -0.32 88
GU.RNCA.HHZ. 2023-09-17T17:50:55.33 0.3 undecidable manual S 189 36.5412 102 0.09 99
GU.GORR.HHZ. 2023-09-17T17:50:53.08 0.3 undecidable manual S 135 29.748 104 0.13 99
GU.ROTM.HHZ. 2023-09-17T17:50:53.06 0.3 undecidable manual P 277 53.2023 50 0.68 82
GU.PCP.HHZ. 2023-09-17T17:50:51.14 0.3 undecidable manual P 233 47.2194 50 -0.31 93
GU.GENL.EHE. 2023-09-17T17:50:51.15 0.3 undecidable manual P 186 43.5231 50 0.27 94
IT.GNV.HGN. 2023-09-17T17:50:50.49 0.3 undecidable manual P 190 41.1255 50 -0.02 100
GU.RNCA.HHZ. 2023-09-17T17:50:49.68 0.3 undecidable manual P 189 36.5412 102 -0.09 99
GU.GORR.HHZ. 2023-09-17T17:50:48.35 0.3 undecidable manual P 135 29.748 104 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GORR.HHN. ML:2.3 0.001108 0.44 AML other m 2023-09-17T17:50:53.64
GU.GORR.HHE. ML:2.6 0.00189702 0.2432 AML other m 2023-09-17T17:50:54.28
GU.RNCA.HHE. ML:2.1 0.0004984391500000001 0.1536 AML other m 2023-09-17T17:50:56.15
GU.RNCA.HHN. ML:2.1 0.0005214082 0.1664 AML other m 2023-09-17T17:50:55.80
GU.PCP.HHN. ML:1.6 0.00011480357500000001 0.3072 AML other m 2023-09-17T17:50:58.71
GU.PCP.HHE. ML:1.8 0.0001602257 0.2176 AML other m 2023-09-17T17:50:58.46
IV.QLNO.HHN. ML:2.2 0.000221 0.2 AML other m 2023-09-17T17:51:08.17
GU.GRAM.HHE. ML:2.5 0.00038094254999999997 0.256 AML other m 2023-09-17T17:51:10.80
IV.QLNO.HHE. ML:2.0 0.00013700000000000002 1.8 AML other m 2023-09-17T17:51:11.07
GU.GRAM.HHN. ML:2.6 0.000468 0.26 AML other m 2023-09-17T17:51:11.53
GU.ROTM.HHN. ML:2.5 0.000754 0.46 AML other m 2023-09-17T17:51:12.22
GU.RORO.HHN. ML:2.3 0.00017649999999999998 0.16 AML other m 2023-09-17T17:51:15.33
GU.RORO.HHE. ML:2.2 0.00012329970000000002 0.1408 AML other m 2023-09-17T17:51:15.33
GU.EQUI.HHE. ML:1.7 0.00004495 0.42 AML other m 2023-09-17T17:51:17.55
GU.EQUI.HHN. ML:1.9 0.00006315 0.3 AML other m 2023-09-17T17:51:17.28
4P.IT06A.HHN. ML:2.5 0.0003285 0.38 AML other m 2023-09-17T17:51:17.65
IV.MONC.HHE. ML:2.6 0.0004192848 0.2816 AML other m 2023-09-17T17:51:18.76
IV.VARE.HHE. ML:2.0 0.000078251555 0.2048 AML other m 2023-09-17T17:51:20.75
GU.GBOS.HHN. ML:2.2 0.00011892230500000001 0.3072 AML other m 2023-09-17T17:51:18.41
GU.GBOS.HHE. ML:2.1 0.00009740307000000001 0.5504 AML other m 2023-09-17T17:51:19.28
4P.IT06A.HHE. ML:2.6 0.00039049999999999995 0.28 AML other m 2023-09-17T17:51:19.15
IV.MDI.HHN. ML:2.3 0.000142 0.48 AML other m 2023-09-17T17:51:19.68
IV.MONC.HHN. ML:2.6 0.0005265 1.64 AML other m 2023-09-17T17:51:19.14
CH.MUGIO.HHE. ML:2.3 0.00013900000000000002 0.22 AML other m 2023-09-17T17:51:20.74
CH.MUGIO.HHN. ML:2.2 0.000104702545 0.1664 AML other m 2023-09-17T17:51:20.44
GU.IMI.HHN. ML:2.0 0.000060899999999999996 1.62 AML other m 2023-09-17T17:51:22.97
GU.IMI.HHE. ML:2.3 0.00013700000000000002 1.46 AML other m 2023-09-17T17:51:22.26
IV.MDI.HHE. ML:2.2 0.00011406655 0.3072 AML other m 2023-09-17T17:51:25.08
IV.VARE.HHN. ML:2.2 0.0001116 1.68 AML other m 2023-09-17T17:51:23.15
GU.CIRO.HHN. ML:2.7 0.00024778055 0.1792 AML other m 2023-09-17T17:51:24.61
GU.CIRO.HHE. ML:2.4 0.00014742635000000002 0.2304 AML other m 2023-09-17T17:51:24.62
GU.BHB.HNE. ML:2.4 0.00014563178500000002 0.4352 AML other m 2023-09-17T17:51:25.61
GU.BHB.HHE. ML:2.4 0.00013900000000000002 0.42 AML other m 2023-09-17T17:51:25.62
GU.CARD.HHE. ML:2.5 0.0001885 0.36 AML other m 2023-09-17T17:51:25.64
GU.BHB.HHN. ML:2.2 0.00009990794999999999 0.32 AML other m 2023-09-17T17:51:25.73
GU.BHB.HNN. ML:2.4 0.00012791205 0.448 AML other m 2023-09-17T17:51:25.73
FR.SAOF.HHE.00 ML:2.2 0.0000786 0.36 AML other m 2023-09-17T17:51:26.95
GU.SATI.HHN. ML:2.3 0.00009777970499999999 0.128 AML other m 2023-09-17T17:51:27.08
GU.SATI.HNN. ML:2.3 0.00010186985 0.1152 AML other m 2023-09-17T17:51:27.13
MN.VLC.HHE. ML:2.0 0.00007039999999999999 1.02 AML other m 2023-09-17T17:51:27.05
GU.STV.HHE. ML:2.2 0.0000817 0.8 AML other m 2023-09-17T17:51:27.12
MN.VLC.HHN. ML:1.8 0.00004704999999999999 0.42 AML other m 2023-09-17T17:51:27.54
GU.STV.HHN. ML:2.1 0.0000591 1.62 AML other m 2023-09-17T17:51:28.11
FR.SAOF.HHN.00 ML:2.1 0.00006514908999999999 0.3328 AML other m 2023-09-17T17:51:28.39
GU.SATI.HNE. ML:2.4 0.0001164053 0.2688 AML other m 2023-09-17T17:51:28.06
GU.SATI.HHE. ML:2.4 0.0001178737 0.2688 AML other m 2023-09-17T17:51:28.20
GU.CARD.HHN. ML:2.4 0.00013651069999999997 0.3968 AML other m 2023-09-17T17:51:29.64
GU.LSD.HHN. ML:2.2 0.00007165000000000001 0.14 AML other m 2023-09-17T17:51:29.80
GU.LSD.HHE. ML:2.1 0.00005625 0.6 AML other m 2023-09-17T17:51:30.82
IV.SALO.HHE. ML:2.3 0.0000937 0.28 AML other m 2023-09-17T17:51:30.94
IV.MABI.HHE. ML:1.7 0.000021499999999999997 0.46 AML other m 2023-09-17T17:51:35.22
IV.MAGA.HHE. ML:2.7 0.00021335275 0.32 AML other m 2023-09-17T17:51:35.97
IV.MAGA.HHN. ML:2.6 0.00015099999999999998 0.38 AML other m 2023-09-17T17:51:35.37
CH.FUSIO.HHE. ML:2.1 0.000046949999999999996 0.18 AML other m 2023-09-17T17:51:35.82
CH.DIX.HHN. ML:2.8 0.00023198325 0.3456 AML other m 2023-09-17T17:51:35.56
IV.SALO.HHN. ML:2.2 0.00008007771 0.256 AML other m 2023-09-17T17:51:31.16
CH.DIX.HHE. ML:2.7 0.00017866375 0.4096 AML other m 2023-09-17T17:51:35.60
ST.RONC.EHE. ML:2.4 0.000093974125 0.1408 AML other m 2023-09-17T17:51:37.68
IV.MABI.HHN. ML:1.7 0.000018459055 0.1024 AML other m 2023-09-17T17:51:37.21
CH.FUSIO.HHN. ML:1.9 0.000027868345 0.1664 AML other m 2023-09-17T17:51:35.60
ST.RONC.EHN. ML:2.6 0.00013945000000000003 1.76 AML other m 2023-09-17T17:51:37.94
ST.VARA.EHN. ML:2.3 0.000068 0.26 AML other m 2023-09-17T17:51:39.36
ST.VARA.EHE. ML:2.5 0.0000988 0.3 AML other m 2023-09-17T17:51:41.52
SI.LUSI.HHN. ML:2.5 0.0000876733 0.2048 AML other m 2023-09-17T17:51:45.96
SI.LUSI.HHE. ML:2.2 0.000052491474999999995 0.2816 AML other m 2023-09-17T17:51:44.38
ST.DOSS.HHN. ML:2.2 0.00005165592 0.3968 AML other m 2023-09-17T17:51:47.00
CH.DAVOX.HHE. ML:2.7 0.00010499999999999999 1.56 AML other m 2023-09-17T17:51:47.80
CH.BNALP.HHE. ML:2.1 0.000024500000000000003 0.54 AML other m 2023-09-17T17:51:47.12
ST.DOSS.HHE. ML:2.2 0.000041519165 0.2432 AML other m 2023-09-17T17:51:47.90
CH.BNALP.HHN. ML:2.1 0.0000241 0.58 AML other m 2023-09-17T17:51:48.04
CH.DAVOX.HHN. ML:2.8 0.000125 1.66 AML other m 2023-09-17T17:51:48.13
IV.NRCA.HHN. ML:3.2 0.00009012469500000001 0.192 AML other m 2023-09-17T17:52:22.49
IV.NRCA.HHE. ML:3.3 0.0001135 0.08 AML other m 2023-09-17T17:52:22.75
IV.MDI.HNE. ML:2.2 0.00012815749999999998 0.2176 AML other m 2023-09-17T17:51:22.43
GU.TRAV.HHE. ML:2.9 0.00052002905 0.256 AML other m 2023-09-17T17:51:19.69
IV.SALO.HNE. ML:2.4 0.00011451400000000001 0.576 AML other m 2023-09-17T17:51:31.99
IV.MAGA.HNN. ML:2.2 0.00007431064500000001 0.3456 AML other m 2023-09-17T17:51:33.16
GU.RRL.HHN. ML:1.8 0.000025714084999999997 0.6016 AML other m 2023-09-17T17:51:38.07
IV.MRGE.HHE. ML:2.4 0.000077233465 0.384 AML other m 2023-09-17T17:51:36.72
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
Waveforms Seismic signals in miniseed + resp format Download