Earthquake with magnitude of Md 3.5 on date 06-04-2001 and time 04:22:52 (Italy) in region 2 km NW Tremezzina (CO)

A magnitude Md 3.5 earthquake occured in region: 2 km NW Tremezzina (CO), on

  • 06-04-2001 02:22:52 (UTC)
  • 06-04-2001 04:22:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.98, 9.18 at 7 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Tremezzina CO 2 5180 5180
Sala Comacina CO 2 552 5732
Colonno CO 3 504 6236
Lezzeno CO 4 2060 8296
Pigra CO 5 258 8554
Griante CO 5 629 9183
Bene Lario CO 5 330 9513
Argegno CO 6 681 10194
Grandola ed Uniti CO 6 1302 11496
Ponna CO 6 254 11750
Menaggio CO 7 3143 14893
Blessagno CO 7 272 15165
Bellagio CO 7 3758 18923
Dizzasco CO 7 624 19547
Castiglione d'Intelvi CO 7 1182 20729
Porlezza CO 7 4890 25619
Carlazzo CO 8 3103 28722
Claino con Osteno CO 8 544 29266
Corrido CO 8 843 30109
Laino CO 8 499 30608
San Fedele Intelvi CO 8 1808 32416
Plesio CO 8 835 33251
Cerano d'Intelvi CO 8 557 33808
Nesso CO 8 1240 35048
Schignano CO 8 864 35912
Veleso CO 8 231 36143
Ramponio Verna CO 9 461 36604
Pellio Intelvi CO 9 977 37581
Brienno CO 9 359 37940
Zelbio CO 9 211 38151
Varenna LC 9 786 38937
Casasco d'Intelvi CO 9 464 39401
Magreglio CO 10 665 40066
Perledo LC 10 941 41007
Valsolda CO 10 1559 42566
San Siro CO 10 1739 44305
Cusino CO 10 223 44528
Oliveto Lario LC 10 1225 45753
Barni CO 11 599 46352
Lierna LC 11 2141 48493
Val Rezzo CO 11 173 48666
San Bartolomeo Val Cavargna CO 11 1027 49693
Laglio CO 11 885 50578
Pognana Lario CO 12 744 51322
Lanzo d'Intelvi CO 12 1447 52769
Bellano LC 12 3231 56000
San Nazzaro Val Cavargna CO 12 314 56314
Esino Lario LC 13 745 57059
Sormano CO 13 639 57698
Cavargna CO 13 227 57925
Carate Urio CO 13 1171 59096
Vendrogno LC 13 312 59408
Lasnigo CO 13 482 59890
Mandello del Lario LC 13 10425 70315
Caglio CO 13 451 70766
Cremia CO 14 710 71476
Parlasco LC 14 141 71617
Faggeto Lario CO 14 1212 72829
Rezzago CO 14 306 73135
Torno CO 15 1155 74290
Dervio LC 15 2669 76959
Valbrona CO 15 2722 79681
Moltrasio CO 15 1607 81288
Pianello del Lario CO 15 1058 82346
Taceno LC 15 543 82889
Abbadia Lariana LC 15 3200 86089
Asso CO 15 3587 89676
Campione d'Italia CO 16 1995 91671
Vestreno LC 16 308 91979
Musso CO 16 1001 92980
Cortenova LC 16 1192 94172
Crandola Valsassina LC 16 251 94423
Canzo CO 17 5081 99504
Sueglio LC 17 144 99648
Blevio CO 17 1187 100835
Caslino d'Erba CO 17 1669 102504
Margno LC 17 386 102890
Introzzo LC 17 121 103011
Castelmarte CO 17 1320 104331
Dorio LC 17 327 104658
Dongo CO 18 3432 108090
Casargo LC 18 830 108920
Cernobbio CO 18 6745 115665
Garzeno CO 18 806 116471
Ponte Lambro CO 18 4334 120805
Tremenico LC 18 167 120972
Proserpio CO 18 926 121898
Maslianico CO 18 3326 125224
Stazzona CO 19 615 125839
Brunate CO 19 1749 127588
Erba CO 19 16415 144003
Longone al Segrino CO 19 1878 145881
Pagnona LC 20 374 146255
Primaluna LC 20 2246 148501
Eupilio CO 20 2633 151134

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Como (84495 inhabitants)
33 Km NE of Varese (80799 inhabitants)
45 Km N of Monza (122671 inhabitants)
47 Km NE of Gallarate (53343 inhabitants)
47 Km N of Cinisello Balsamo (75078 inhabitants)
48 Km NE of Legnano (60262 inhabitants)
48 Km NE of Busto Arsizio (83106 inhabitants)
50 Km NW of Bergamo (119381 inhabitants)
50 Km N of Sesto San Giovanni (81608 inhabitants)
52 Km N of Rho (50434 inhabitants)
57 Km N of Milano (1345851 inhabitants)
74 Km NE of Novara (104380 inhabitants)
78 Km NE of Vigevano (63310 inhabitants)
89 Km N of Pavia (72576 inhabitants)
95 Km NW of Brescia (196480 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
Md 3.5
ML-VAX 2.8
2001-04-06
02:22:52
45.98 9.18 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 415339
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-04-06 02:22:52 ± 0.356
Latitude 45.98 ± 0.02
Longitude 9.18 ± 0.01
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 415339

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2329.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.03796
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 415339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:31:21

ML:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 415339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.NRCA.Z. 2001-04-06T02:23:56.80 10.0 undecidable manual PN 136 0.038 -0.14 0.9
--.ASS.Z. 2001-04-06T02:23:51.31 10.0 undecidable manual PN 138 0.0344 -0.25 0.9
--.SNTG.Z. 2001-04-06T02:23:51.00 10.0 undecidable manual PN 133 0.0344 -0.47 0.7
--.DOI.Z. 2001-04-06T02:23:50.86 10.0 undecidable manual SN 222 0.0181 -0.72 0.3
--.EB9.Z. 2001-04-06T02:23:46.43 10.0 undecidable manual SN 150 0.0161 0.04 0.6
--.CTI.Z. 2001-04-06T02:23:44.61 10.0 undecidable manual SN 86 0.0155 -0.07 0.6
--.CSNT.Z. 2001-04-06T02:23:39.00 10.0 undecidable manual PN 148 0.0263 -0.16 1.1
--.PGD.Z. 2001-04-06T02:23:37.00 10.0 undecidable manual PN 138 0.0249 -0.06 1.2
--.SFI.Z. 2001-04-06T02:23:37.00 10.0 undecidable manual PN 136 0.0253 -0.57 0.8
--.PII.Z. 2001-04-06T02:23:31.70 10.0 undecidable manual PN 156 0.022 -1 0.4
--.BDI.Z. 2001-04-06T02:23:29.57 10.0 undecidable manual PN 151 0.0194 0.82 0.8
--.ZC9.Z. 2001-04-06T02:23:27.93 10.0 positive manual PN 141 0.0185 0.55 2.3
--.SAL.Z. 2001-04-06T02:23:27.40 10.0 undecidable manual SG 111 0.0091 -0.1 0.6
--.BNI.Z. 2001-04-06T02:23:27.55 10.0 undecidable manual PN 242 0.0178 1.36 0.3
--.DOI.Z. 2001-04-06T02:23:26.82 10.0 undecidable manual PN 222 0.0181 0.25 1.4
--.GU9.Z. 2001-04-06T02:23:26.29 10.0 undecidable manual PN 147 0.0172 1.05 0.6
--.BR9.Z. 2001-04-06T02:23:24.54 10.0 undecidable manual SG 58 0.0087 -1.34 0.1
--.EB9.Z. 2001-04-06T02:23:23.69 10.0 undecidable manual PN 150 0.0161 0.12 1.5
--.CTI.Z. 2001-04-06T02:23:23.61 10.0 undecidable manual PN 86 0.0155 1.02 0.6
--.ZAV.Z. 2001-04-06T02:23:23.10 10.0 undecidable manual PN 138 0.0147 1.62 0.3
--.ORO.Z. 2001-04-06T02:23:23.19 10.0 undecidable manual SG 246 0.0081 -0.84 0.3
--.MCGN.Z. 2001-04-06T02:23:21.27 10.0 undecidable manual SG 268 0.0074 -0.21 0.6
--.BOB.Z. 2001-04-06T02:23:15.35 10.0 undecidable manual PN 170 0.011 -0.55 1
--.BR9.Z. 2001-04-06T02:23:11.68 10.0 negative manual PG 58 0.0087 -0.05 3
--.SAL.Z. 2001-04-06T02:23:11.73 10.0 positive manual PG 111 0.0091 -0.94 1.2
--.ORO.Z. 2001-04-06T02:23:10.23 10.0 positive manual PG 246 0.0081 -0.44 2.4
--.MCGN.Z. 2001-04-06T02:23:09.38 10.0 positive manual PG 268 0.0074 0.19 2.9
--.VAI.Z. 2001-04-06T02:23:04.30 10.0 undecidable manual SG 247 0.0027 -0.35 0.6
--.VAI.Z. 2001-04-06T02:22:59.67 10.0 undecidable manual PG 247 0.0027 0.35 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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