Earthquake with magnitude of Md 3.4 on date 03-04-1991 and time 23:31:22 (Italy) in region Albania

A magnitude Md 3.4 earthquake occured in region: Albania, on

  • 03-04-1991 21:31:22 (UTC)
  • 03-04-1991 23:31:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4040, 20.3970 at 10 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 3.4
M 3.5
1991-04-03
21:31:22
41.404 20.397 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 138609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-04-03 21:31:22 ± 0.141
Latitude 41.4040 ± 0.0152
Longitude 20.3970 ± 0.0165
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 138609

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) 2181.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00372
Epicentral distance of station farthest from the epicenter (degree) 0.07050
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 138609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:09:20

M:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 138609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:33:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1991-04-03T21:33:15.97 10.0 undecidable manual PN 309 0.0705 -0.47 0.7
--.FVI.Z. 1991-04-03T21:33:10.38 10.0 undecidable manual PN 316 0.0678 -1.99 0
--.SFI.Z. 1991-04-03T21:33:03.00 10.0 undecidable manual PN 294 0.0608 1.34 0.3
--.TRI.Z. 1991-04-03T21:32:57.50 10.0 undecidable manual PN 314 0.0580 0.13 1
--.ARV.Z. 1991-04-03T21:32:49.00 10.0 undecidable manual PN 293 0.0529 -0.57 0.8
--.MNS.Z. 1991-04-03T21:32:49.00 10.0 undecidable manual PN 282 0.0524 0.23 1
--.PTJ.Z. 1991-04-03T21:32:45.40 10.0 undecidable manual PN 326 0.0497 0.73 0.7
--.AZI.Z. 1991-04-03T21:32:42.50 10.0 undecidable manual PN 278 0.0470 1.9 0.1
--.RFI.Z. 1991-04-03T21:32:35.41 10.0 undecidable manual PN 271 0.0432 0.51 1
--.DUI.Z. 1991-04-03T21:32:31.00 10.0 undecidable manual PN 275 0.0400 1.06 0.5
--.DR2.Z. 1991-04-03T21:32:28.44 10.0 negative manual PN 232 0.0395 -0.71 0.9
--.GRI.Z. 1991-04-03T21:32:23.00 10.0 undecidable manual PN 231 0.0359 -0.6 1
--.FG2.Z. 1991-04-03T21:32:22.46 10.0 undecidable manual PN 277 0.0354 -0.38 1.2
--.SGO.Z. 1991-04-03T21:32:22.94 10.0 undecidable manual PN 259 0.0354 0.12 1.3
--.MGR.Z. 1991-04-03T21:32:22.40 10.0 undecidable manual PN 252 0.0349 0.31 1.2
--.CZI.Z. 1991-04-03T21:32:22.81 10.0 negative manual PN 237 0.0352 0.2 1.3
--.RDO.Z. 1991-04-03T21:32:22.00 10.0 undecidable manual PN 92 0.0348 0.03 1.3
--.KDZ.Z. 1991-04-03T21:32:20.00 10.0 undecidable manual PN 84 0.0334 0.17 2.6
--.TDS.Z. 1991-04-03T21:32:17.00 10.0 undecidable manual PN 242 0.0318 -0.48 1.2
--.ROI.Z. 1991-04-03T21:32:16.50 10.0 undecidable manual PN 239 0.0309 0.43 1.2
--.ORI.Z. 1991-04-03T21:32:15.11 10.0 undecidable manual PN 247 0.0295 1.15 0.6
--.VAY.Z. 1991-04-03T21:32:13.00 10.0 undecidable manual SN 92 0.0147 0.91 0.5
--.VLS.Z. 1991-04-03T21:32:13.50 10.0 undecidable manual PN 177 0.0290 0.32 1.3
--.TTG.Z. 1991-04-03T21:32:05.89 10.0 undecidable manual SN 321 0.0119 1.02 0.4
--.PLG.Z. 1991-04-03T21:32:04.50 10.0 undecidable manual PN 113 0.0227 1.01 0.7
--.PVY.Z. 1991-04-03T21:32:02.47 10.0 undecidable manual SN 345 0.0110 -0.09 0.9
--.BRT.Z. 1991-04-03T21:32:02.56 10.0 undecidable manual PN 259 0.0225 -0.64 1.1
--.PLE.Z. 1991-04-03T21:31:58.16 10.0 negative manual PN 339 0.0185 0.99 1.4
--.BRY.Z. 1991-04-03T21:31:57.34 10.0 positive manual PN 318 0.0182 0.62 2.2
--.LCI.Z. 1991-04-03T21:31:56.24 10.0 undecidable manual PN 239 0.0182 -0.5 1.2
--.ULC.Z. 1991-04-03T21:31:55.92 10.0 undecidable manual SG 303 0.0091 -1.62 0.1
--.HCY.Z. 1991-04-03T21:31:52.76 10.0 negative manual PN 307 0.0158 -0.2 2.8
--.NKY.Z. 1991-04-03T21:31:52.80 10.0 positive manual PN 324 0.0157 -0.06 2.9
--.VAY.Z. 1991-04-03T21:31:51.00 10.0 undecidable manual PN 92 0.0147 -0.26 2.8
--.KZN.Z. 1991-04-03T21:31:51.00 10.0 undecidable manual PN 136 0.0135 1.41 0.4
--.IVA.Z. 1991-04-03T21:31:48.68 10.0 positive manual PN 346 0.0136 -0.94 1.6
--.BDV.Z. 1991-04-03T21:31:47.76 10.0 positive manual PN 307 0.0131 -1.16 1.1
--.TTG.Z. 1991-04-03T21:31:44.98 10.0 negative manual PN! 321 0.0119 -2.12 0
--.PVY.Z. 1991-04-03T21:31:42.90 10.0 negative manual PN! 345 0.0110 -2.86 0
--.ULC.Z. 1991-04-03T21:31:39.60 10.0 negative manual PG! 303 0.0091 -3.26 0
--.SKO.Z. 1991-04-03T21:31:38.50 10.0 positive manual PG! 53 0.0087 -3.26 0
--.OHR.Z. 1991-04-03T21:31:37.60 10.0 undecidable manual SG 134 0.0037 -0.62 0.7
--.OHR.Z. 1991-04-03T21:31:30.50 10.0 positive manual PG 134 0.0037 -1.2 1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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