Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 22-09-2015 and time 12:41:08 (UTC) in region 4 km SW Segrate (MI)

A magnitude ML 2.3 earthquake occured in region: 4 km SW Segrate (MI), on

  • 22-09-2015 12:41:08 (UTC)
  • 22-09-2015 14:41:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.4720, 9.2580 at 48 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
Segrate MI 4 35037 35037
Milano MI 5 1345851 1380888
Vimodrone MI 5 17028 1397916
San Donato Milanese MI 6 32492 1430408
Peschiera Borromeo MI 6 23397 1453805
Pioltello MI 6 36912 1490717
Cologno Monzese MI 7 47971 1538688
Sesto San Giovanni MI 7 81608 1620296
Rodano MI 8 4646 1624942
San Giuliano Milanese MI 8 38226 1663168
Pantigliate MI 8 6064 1669232
Cernusco sul Naviglio MI 9 33436 1702668
Bresso MI 9 26263 1728931
Mediglia MI 9 12215 1741146
Brugherio MB 10 34255 1775401
Vignate MI 10 9310 1784711
Cassina de' Pecchi MI 10 13652 1798363
Cinisello Balsamo MI 10 75078 1873441
Cormano MI 10 20118 1893559
Settala MI 10 7430 1900989
Cusano Milanino MI 11 18886 1919875
Carugate MI 11 15146 1935021
Opera MI 11 13748 1948769
Tribiano MI 12 3515 1952284
Novate Milanese MI 12 20065 1972349
Bussero MI 12 8582 1980931
Liscate MI 12 4095 1985026
Colturano MI 12 2100 1987126
Corsico MI 12 35032 2022158
Assago MI 12 8879 2031037
Monza MB 13 122671 2153708
Paullo MI 13 11455 2165163
Baranzate MI 13 11824 2176987
Buccinasco MI 13 27224 2204211
Paderno Dugnano MI 13 46633 2250844
Rozzano MI 13 42475 2293319
Locate di Triulzi MI 13 10050 2303369
Cesano Boscone MI 13 23792 2327161
Gorgonzola MI 13 20233 2347394
Melzo MI 13 18710 2366104
Pessano con Bornago MI 14 9109 2375213
Bollate MI 14 36392 2411605
Nova Milanese MB 14 23292 2434897
Dresano MI 14 3059 2437956
Melegnano MI 14 17716 2455672
Agrate Brianza MB 14 15426 2471098
Pero MI 14 11084 2482182
Muggiò MB 14 23403 2505585
Caponago MB 14 5245 2510830
Pieve Emanuele MI 14 16183 2527013
Merlino LO 14 1777 2528790
Basiglio MI 14 7769 2536559
Vizzolo Predabissi MI 15 3928 2540487
Carpiano MI 15 4122 2544609
Concorezzo MB 15 15631 2560240
Zelo Buon Persico LO 15 7240 2567480
Villasanta MB 15 13894 2581374
Vedano al Lambro MB 15 7587 2588961
Lissone MB 16 44923 2633884
Mulazzano LO 16 5758 2639642
Settimo Milanese MI 16 19913 2659555
Trezzano sul Naviglio MI 16 20790 2680345
Senago MI 16 21795 2702140
Pozzuolo Martesana MI 16 8458 2710598
Casalmaiocco LO 16 3159 2713757
Varedo MB 16 13256 2727013
Arese MI 16 19187 2746200
Truccazzano MI 16 6000 2752200
Comazzo LO 17 2244 2754444
Bellinzago Lombardo MI 17 3836 2758280
Burago di Molgora MB 17 4273 2762553
Cerro al Lambro MI 17 5061 2767614
Gessate MI 17 8872 2776486
Cervignano d'Adda LO 17 2182 2778668
Sordio LO 17 3322 2781990
Desio MB 17 41865 2823855
Zibido San Giacomo MI 17 6861 2830716
Cambiago MI 17 6843 2837559
Siziano PV 17 5989 2843548
Cusago MI 18 3902 2847450
Biassono MB 18 12091 2859541
Bovisio-Masciago MB 18 17017 2876558
Cavenago di Brianza MB 18 7261 2883819
Landriano PV 18 6327 2890146
Rho MI 18 50434 2940580
San Zenone al Lambro MI 18 4496 2945076
Arcore MB 18 17874 2962950
Vimercate MB 18 25938 2988888
Garbagnate Milanese MI 18 27175 3016063
Limbiate MB 18 35279 3051342
Cornaredo MI 18 20459 3071801
Gaggiano MI 19 9032 3080833
Macherio MB 19 7449 3088282
Bascapè PV 19 1776 3090058
Lacchiarella MI 19 8944 3099002
Ornago MB 19 4931 3103933
Cesano Maderno MB 19 38391 3142324
Inzago MI 19 10927 3153251
Galgagnano LO 19 1241 3154492
Noviglio MI 19 4560 3159052
Masate MI 20 3530 3162582
Binasco MI 20 7265 3169847
Cesate MI 20 14215 3184062
Sovico MB 20 8393 3192455
Lesmo MB 20 8505 3200960
Pregnana Milanese MI 20 7204 3208164
Vidigulfo PV 20 6311 3214475
Tavazzano con Villavesco LO 20 6130 3220605

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km E of Milano (1345851 inhabitants)
7 Km S of Sesto San Giovanni (81608 inhabitants)
10 Km SE of Cinisello Balsamo (75078 inhabitants)
13 Km S of Monza (122671 inhabitants)
18 Km E of Rho (50434 inhabitants)
30 Km E of Legnano (60262 inhabitants)
33 Km N of Pavia (72576 inhabitants)
35 Km E of Busto Arsizio (83106 inhabitants)
35 Km E of Vigevano (63310 inhabitants)
40 Km SE of Como (84495 inhabitants)
41 Km SW of Bergamo (119381 inhabitants)
42 Km E of Gallarate (53343 inhabitants)
50 Km E of Novara (104380 inhabitants)
51 Km SE of Varese (80799 inhabitants)
58 Km NW of Piacenza (102191 inhabitants)
71 Km NW of Cremona (71901 inhabitants)
75 Km W of Brescia (196480 inhabitants)
80 Km NE of Alessandria (93943 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 2.3 2015-09-22
12:41:08		 45.4722 9.2577 48 2016-02-19
13:21:47		 Bollettino Sismico Italiano INGV 21625001
Reviewed
Rev100 		ML 2.3 2015-09-22
12:41:08		 45.4708 9.2472 51 2015-09-22
12:56:43		 Sala Sismica INGV-Roma 21532011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-09-22 12:41:08 ± 0.11
Latitude 45.4722 ± 0.0063
Longitude 9.2577 ± 0.0128
Depth (km) 48 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 21625001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 823
Semi-minor axis of confidence ellipse (meter) 626
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.26170
Epicentral distance of station farthest from the epicenter (degree) 1.80134
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 21625001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-01-19 17:39:23

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 21532011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-09-22 12:56:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SI.LUSI.HHZ. 2015-09-22T12:41:45.97 0.3 undecidable manual S 67 141.3474 96 -0.62 53
CH.BERNI.HHZ. 2015-09-22T12:41:42.83 0.3 undecidable manual S 29 119.991 98 0.81 53
CH.FUSIO.HHZ. 2015-09-22T12:41:41.88 0.3 undecidable manual S 337 118.2927 98 0.23 63
CH.MMK.HHZ. 2015-09-22T12:41:41.20 0.3 undecidable manual S 303 118.8921 98 -0.59 59
GU.TRAV.HHZ. 2015-09-22T12:41:40.54 0.3 undecidable manual S 273 117.5934 98 -0.96 51
GU.PCP.HHZ. 2015-09-22T12:41:40.97 0.3 undecidable manual S 209 117.3936 98 -0.5 60
IV.MABI.HHZ. 2015-09-22T12:41:40.95 0.3 undecidable manual S 56 116.7942 98 -0.38 61
GU.ENR.HHZ. 2015-09-22T12:41:37.50 0.3 undecidable manual P 227 199.9443 94 -0.37 45
GU.GORR.HHZ. 2015-09-22T12:41:36.78 0.3 undecidable manual S 178 96.0261 101 -0.14 67
CH.BNALP.HHZ. 2015-09-22T12:41:35.30 0.6 undecidable manual P 338 167.8098 95 1.42 22
IV.BOB.HHZ. 2015-09-22T12:41:34.03 0.3 undecidable manual S 169 79.5648 105 0.57 63
GU.REMY.HHZ. 2015-09-22T12:41:34.19 0.6 undecidable manual P 285 167.9097 95 0.3 35
GU.EQUI.HHZ. 2015-09-22T12:41:33.64 0.3 undecidable manual P 154 161.1165 95 0.59 51
IV.PLMA.HHZ. 2015-09-22T12:41:33.63 0.3 undecidable manual P 163 164.613 95 0.14 56
CH.DAVOX.HHZ. 2015-09-22T12:41:33.72 0.6 undecidable manual P 18 152.8359 96 1.7 20
ST.GAGG.HHZ. 2015-09-22T12:41:31.46 0.3 undecidable manual P 62 148.0407 96 0.03 62
ST.DOSS.HHZ. 2015-09-22T12:41:31.94 0.3 undecidable manual P 72 156.3213 95 -0.52 53
SI.LUSI.HHZ. 2015-09-22T12:41:30.28 0.3 undecidable manual P 67 141.3474 96 -0.32 59
IV.BRMO.HHZ. 2015-09-22T12:41:30.76 0.6 undecidable manual P 37 140.6481 96 0.24 40
IV.ROVR.HHZ. 2015-09-22T12:41:29.84 0.1 undecidable manual P 82 142.2465 96 -0.87 64
CH.BERNI.HHZ. 2015-09-22T12:41:29.02 0.3 undecidable manual P 29 119.991 98 1.06 47
IV.VARE.HHZ. 2015-09-22T12:41:29.23 0.3 undecidable manual S 319 57.8976 116 0.14 72
CH.FUSIO.HHZ. 2015-09-22T12:41:28.10 0.1 undecidable manual P 337 118.2927 98 0.35 82
CH.MUGIO.HHZ. 2015-09-22T12:41:28.16 0.3 undecidable manual S 342 52.6029 119 0.09 74
CH.MMK.HHZ. 2015-09-22T12:41:27.69 0.3 undecidable manual P 303 118.8921 98 -0.14 65
GU.PCP.HHZ. 2015-09-22T12:41:27.68 0.3 undecidable manual P 209 117.3936 98 0.03 66
IV.MABI.HHZ. 2015-09-22T12:41:27.58 0.1 undecidable manual P 56 116.7942 98 0.01 88
GU.TRAV.HHZ. 2015-09-22T12:41:26.82 0.3 undecidable manual P 273 117.5934 98 -0.84 53
IV.SALO.HHZ. 2015-09-22T12:41:25.30 0.1 undecidable manual P 80 99.7224 101 -0.17 88
IV.EUCT.HNZ. 2015-09-22T12:41:25.13 0.6 undecidable manual S 198 31.4463 138 0.64 45
GU.GORR.HHZ. 2015-09-22T12:41:25.11 0.3 undecidable manual P 178 96.0261 101 0.09 68
IV.MERA.HNZ. 2015-09-22T12:41:23.72 0.3 undecidable manual S 27 29.0487 141 -0.45 70
IV.BOB.HHZ. 2015-09-22T12:41:23.17 0.1 undecidable manual P 169 79.5648 105 0.15 93
IV.VARE.HHZ. 2015-09-22T12:41:20.89 0.1 undecidable manual P 319 57.8976 116 0.39 92
CH.MUGIO.HHZ. 2015-09-22T12:41:20.10 0.1 positive manual P 342 52.6029 119 0.19 97
IV.EUCT.HNZ. 2015-09-22T12:41:17.76 0.6 undecidable manual P 198 31.4463 138 -0.08 51
IV.MERA.HNZ. 2015-09-22T12:41:17.47 0.1 undecidable manual P 27 29.0487 141 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.BERNI.HHN. ML:2.5 0.0001885 0.46 AML other m 2015-09-22T12:41:43.17
CH.BERNI.HHE. ML:2.5 0.000225 1.58 AML other m 2015-09-22T12:41:43.36
CH.BNALP.HHN. ML:2.1 0.0000458 1.2 AML other m 2015-09-22T12:41:58.19
CH.BNALP.HHE. ML:2.3 0.00006915 0.38 AML other m 2015-09-22T12:41:57.34
IV.BOB.HHE. ML:2.6 0.0005045 0.26 AML other m 2015-09-22T12:41:34.57
IV.BOB.HHN. ML:2.4 0.0002845 0.4 AML other m 2015-09-22T12:41:34.44
IV.BRMO.HHN. ML:1.9 0.000041349999999999995 0.26 AML other m 2015-09-22T12:41:50.25
IV.BRMO.HHE. ML:1.9 0.0000378 0.4 AML other m 2015-09-22T12:41:50.69
CH.DAVOX.HHN. ML:2.2 0.00006829999999999999 0.82 AML other m 2015-09-22T12:41:52.77
CH.DAVOX.HHE. ML:2.2 0.00007439999999999999 0.34 AML other m 2015-09-22T12:41:54.09
ST.DOSS.HHN. ML:2.3 0.00008295 1.46 AML other m 2015-09-22T12:41:53.37
ST.DOSS.HHE. ML:2.3 0.00008715 1.42 AML other m 2015-09-22T12:41:58.01
IV.EUCT.HNN. ML:2.9 0.0018399999999999998 0.74 AML other m 2015-09-22T12:41:24.70
IV.EUCT.HNE. ML:2.8 0.0015049999999999998 0.34 AML other m 2015-09-22T12:41:24.87
CH.FUSIO.HHE. ML:2.2 0.00009434999999999999 1.5 AML other m 2015-09-22T12:41:45.56
CH.FUSIO.HHN. ML:2.0 0.0000639 0.68 AML other m 2015-09-22T12:41:45.74
ST.GAGG.HHN. ML:2.2 0.00006795000000000001 1.38 AML other m 2015-09-22T12:41:50.64
ST.GAGG.HHE. ML:2.2 0.000083 0.34 AML other m 2015-09-22T12:41:52.11
GU.GORR.HHE. ML:2.4 0.00022 0.78 AML other m 2015-09-22T12:41:37.96
GU.GORR.HHN. ML:2.4 0.000217 0.98 AML other m 2015-09-22T12:41:38.71
SI.LUSI.HHN. ML:2.6 0.00021100000000000003 0.64 AML other m 2015-09-22T12:41:47.02
SI.LUSI.HHE. ML:2.4 0.00011565 1.12 AML other m 2015-09-22T12:41:47.79
IV.MABI.HHN. ML:2.5 0.000242 0.28 AML other m 2015-09-22T12:41:41.78
IV.MABI.HHE. ML:2.5 0.000223 1.08 AML other m 2015-09-22T12:41:42.02
IV.MERA.HNN. ML:3.0 0.00217 1.26 AML other m 2015-09-22T12:41:24.53
IV.MERA.HNE. ML:3.0 0.002345 0.54 AML other m 2015-09-22T12:41:23.86
CH.MMK.HHN. ML:2.2 0.00009834999999999999 0.78 AML other m 2015-09-22T12:41:46.01
CH.MMK.HHE. ML:2.2 0.00009875 0.12 AML other m 2015-09-22T12:41:42.37
CH.MUGIO.HHE. ML:2.2 0.0002535 0.74 AML other m 2015-09-22T12:41:28.34
CH.MUGIO.HHN. ML:2.1 0.00022299999999999997 0.36 AML other m 2015-09-22T12:41:28.53
GU.PCP.HHE. ML:2.2 0.00011015 0.82 AML other m 2015-09-22T12:41:41.27
GU.PCP.HHN. ML:2.2 0.0001215 0.3 AML other m 2015-09-22T12:41:41.70
GU.REMY.HHN. ML:2.4 0.00010115 0.72 AML other m 2015-09-22T12:42:00.29
GU.REMY.HHE. ML:2.4 0.00009825 0.9 AML other m 2015-09-22T12:42:02.83
IV.ROVR.HHN. ML:2.1 0.00006675000000000001 1.12 AML other m 2015-09-22T12:41:51.58
IV.ROVR.HHE. ML:1.8 0.00003365 0.92 AML other m 2015-09-22T12:41:54.32
IV.SALO.HHN. ML:2.2 0.0001315 0.24 AML other m 2015-09-22T12:41:39.89
IV.SALO.HNN. ML:2.2 0.0001325 0.72 AML other m 2015-09-22T12:41:39.89
IV.SALO.HNE. ML:2.2 0.0001225 0.26 AML other m 2015-09-22T12:41:38.90
IV.SALO.HHE. ML:2.2 0.00012204999999999999 0.26 AML other m 2015-09-22T12:41:38.90
GU.TRAV.HHE. ML:2.3 0.0001455 0.68 AML other m 2015-09-22T12:41:43.09
GU.TRAV.HHN. ML:2.3 0.000148 0.84 AML other m 2015-09-22T12:41:45.63
IV.VARE.HHN. ML:2.5 0.000472 0.14 AML other m 2015-09-22T12:41:29.50
IV.VARE.HHE. ML:2.5 0.0005420000000000001 0.28 AML other m 2015-09-22T12:41:30.65
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