Earthquake with magnitude of Md 2.3 on date 19-03-1991 and time 23:43:01 (Italy) in region 2 km W Carcoforo (VC)

A magnitude Md 2.3 earthquake occured in region: 2 km W Carcoforo (VC), on

  • 19-03-1991 22:43:01 (UTC)
  • 19-03-1991 23:43:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.906, 8.025 at 5 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
Carcoforo VC 2 78 78
Rima San Giuseppe VC 4 59 137
Rimasco VC 6 106 243
Ceppo Morelli VB 8 321 564
Macugnaga VB 8 557 1121
Alagna Valsesia VC 9 408 1529
Riva Valdobbia VC 10 258 1787
Mollia VC 10 95 1882
Fobello VC 11 196 2078
Vanzone con San Carlo VB 11 407 2485
Boccioleto VC 11 205 2690
Cervatto VC 11 47 2737
Rossa VC 11 180 2917
Campertogno VC 12 237 3154
Rimella VC 12 134 3288
Bannio Anzino VB 13 475 3763
Balmuccia VC 13 112 3875
Scopa VC 14 381 4256
Cravagliana VC 15 251 4507
Vocca VC 15 174 4681
Rassa VC 15 71 4752
Piode VC 15 202 4954
Pila VC 16 142 5096
Scopello VC 16 387 5483
Calasca-Castiglione VB 16 649 6132
Sabbia VC 17 58 6190
Gressoney-La-Trinité AO 18 303 6493
Antrona Schieranco VB 19 428 6921

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km W of Varese (80799 inhabitants)
66 Km W of Gallarate (53343 inhabitants)
69 Km NW of Novara (104380 inhabitants)
72 Km W of Busto Arsizio (83106 inhabitants)
78 Km W of Legnano (60262 inhabitants)
83 Km W of Como (84495 inhabitants)
89 Km W of Rho (50434 inhabitants)
92 Km NW of Vigevano (63310 inhabitants)
96 Km N of Torino (890529 inhabitants)
100 Km W of Cinisello Balsamo (75078 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 2.3
M 2.5
1991-03-19
22:43:01
45.906 8.025 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 137849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-19 22:43:01 ± 0.234
Latitude 45.9060 ± 0.0161
Longitude 8.0250 ± 0.0294
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137849

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) 2895.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.03861
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 137849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:08:37

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 137849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CAF.Z. 1991-03-19T22:44:08.20 10.0 undecidable manual PN 258 0.0386 0.49 0.9
--.SBF.Z. 1991-03-19T22:44:05.20 10.0 undecidable manual SN 191 0.0187 1.88 0.1
--.BGF.Z. 1991-03-19T22:43:58.50 10.0 undecidable manual PN 282 0.0327 -0.21 1.1
--.SSF.Z. 1991-03-19T22:43:56.00 10.0 undecidable manual PN 291 0.0298 1.7 0.3
--.AVF.Z. 1991-03-19T22:43:55.80 10.0 undecidable manual PN 286 0.03 1.15 0.6
--.LOR.Z. 1991-03-19T22:43:52.80 10.0 undecidable manual PN 296 0.0285 0.53 1
--.SMF.Z. 1991-03-19T22:43:50.80 10.0 undecidable manual PN 285 0.0268 1.08 0.7
--.CDF.Z. 1991-03-19T22:43:45.00 10.0 undecidable manual PN 348 0.023 1.15 0.7
--.HAU.Z. 1991-03-19T22:43:42.20 10.0 undecidable manual PN 331 0.0215 0.63 1.2
--.SBF.Z. 1991-03-19T22:43:39.60 10.0 undecidable manual PN! 191 0.0187 2.23 0
--.SLE.Z. 1991-03-19T22:43:34.90 10.0 undecidable manual PN 9 0.0169 0.23 1.6
--.OSS.Z. 1991-03-19T22:43:32.20 10.0 undecidable manual PN 61 0.0149 0.67 1.3
--.LPG.Z. 1991-03-19T22:43:32.40 10.0 undecidable manual SG! 245 0.0087 -3.8 0
--.BNI.Z. 1991-03-19T22:43:26.22 10.0 undecidable manual PN 228 0.0114 -0.02 1.7
--.LLS.Z. 1991-03-19T22:43:23.40 10.0 undecidable manual PN 35 0.0104 -1.31 0.7
--.LPL.Z. 1991-03-19T22:43:20.20 10.0 undecidable manual PG 247 0.0088 -1.59 0.5
--.LPG.Z. 1991-03-19T22:43:20.40 10.0 undecidable manual PG 245 0.0087 -1.32 0.7
--.VAI.Z. 1991-03-19T22:43:19.19 10.0 undecidable manual SG! 94 0.0046 -2.31 0
--.EMS.Z. 1991-03-19T22:43:16.60 10.0 undecidable manual PG 282 0.007 -1.39 0.6
--.ORO.Z. 1991-03-19T22:43:12.89 10.0 undecidable manual SG 186 0.0025 0.04 0.7
--.VAI.Z. 1991-03-19T22:43:12.46 10.0 positive manual PG 94 0.0046 -0.77 2.5
--.DIX.Z. 1991-03-19T22:43:10.50 10.0 undecidable manual PG 292 0.0041 -1.63 0.4
--.ORO.Z. 1991-03-19T22:43:08.66 10.0 positive manual PG 186 0.0025 0.42 3.1
--.MMK.Z. 1991-03-19T22:43:05.20 10.0 undecidable manual PG 343 0.0013 -0.24 1.6
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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