Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.0 on date 11-04-1991 and time 22:32:00 (Italy) in region Albania

A magnitude Md 3.0 earthquake occured in region: Albania, on

  • 11-04-1991 20:32:00 (UTC)
  • 11-04-1991 22:32:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.1550, 20.1570 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.

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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 3.0
M 3.2 		1991-04-11
20:32:00		 41.155 20.157 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 139009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-04-11 20:32:00 ± 0.295
Latitude 41.1550 ± 0.0294
Longitude 20.1570 ± 0.0287
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 139009

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) 4058.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.03335
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:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 139009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:09:44

M:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 139009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:54:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.BRT.Z. 1991-04-11T20:33:07.00 10.0 undecidable manual SN 263 2.2866 1.22 0.2
--.SGO.Z. 1991-04-11T20:32:57.00 10.0 undecidable manual PN 262 3.7074 -0.95 0.5
--.HCY.Z. 1991-04-11T20:32:55.27 10.0 undecidable manual SN 316 1.776 1.36 0.3
--.ORI.Z. 1991-04-11T20:32:50.00 10.0 undecidable manual PN 249 3.0192 1.48 0.3
--.BDV.Z. 1991-04-11T20:32:49.20 10.0 undecidable manual SN! 318 1.4874 2.09 0
--.TTG.Z. 1991-04-11T20:32:48.77 10.0 undecidable manual SN! 332 1.4319 3.17 0
--.VLS.Z. 1991-04-11T20:32:46.40 10.0 undecidable manual PN 173 2.997 -1.7 0.2
--.BRT.Z. 1991-04-11T20:32:40.00 10.0 undecidable manual PN 263 2.2866 1.63 0.3
--.PLE.Z. 1991-04-11T20:32:40.30 10.0 positive manual PN! 345 2.2422 2.49 0
--.BRY.Z. 1991-04-11T20:32:36.62 10.0 positive manual PN 325 2.109 0.59 2.1
--.ULC.Z. 1991-04-11T20:32:35.12 10.0 undecidable manual SN 320 1.0545 -1.38 0.3
--.NKY.Z. 1991-04-11T20:32:33.68 10.0 negative manual PN 332 1.8648 1.07 1.5
--.VAY.Z. 1991-04-11T20:32:33.00 10.0 undecidable manual PN 83 1.8204 1.02 0.8
--.IVA.Z. 1991-04-11T20:32:31.50 10.0 positive manual PN 353 1.7205 0.82 1.9
--.HCY.Z. 1991-04-11T20:32:30.38 10.0 positive manual PN 316 1.776 -1.14 1.4
--.KZN.Z. 1991-04-11T20:32:27.50 10.0 undecidable manual PN 124 1.4874 0.09 1.4
--.BDV.Z. 1991-04-11T20:32:27.32 10.0 negative manual PN 318 1.4874 -0.27 2.8
--.KEK.Z. 1991-04-11T20:32:26.50 10.0 undecidable manual PN 190 1.4652 -0.63 1.2
--.TTG.Z. 1991-04-11T20:32:26.10 10.0 positive manual PN 332 1.4319 -0.63 2.4
--.PVY.Z. 1991-04-11T20:32:26.42 10.0 positive manual PN 354 1.443 -0.4 2.7
--.SKO.Z. 1991-04-11T20:32:25.10 10.0 undecidable manual PN 48 1.2543 0.84 2
--.ULC.Z. 1991-04-11T20:32:18.34 10.0 positive manual PN! 320 1.0545 -3.12 0
--.OHR.Z. 1991-04-11T20:32:18.90 10.0 undecidable manual SG 94 0.4773 0.48 0.8
--.VLO.Z. 1991-04-11T20:32:13.70 10.0 undecidable manual PG! 216 0.8436 -4.08 0
--.OHR.Z. 1991-04-11T20:32:10.50 10.0 negative manual PG 94 0.4773 -0.52 2.5
--.PHP.Z. 1991-04-11T20:32:10.90 10.0 undecidable manual PG 21 0.5661 -1.76 0.3
--.TIR.Z. 1991-04-11T20:32:10.20 10.0 undecidable manual SG 310 0.2886 -2.03 0.1
--.TIR.Z. 1991-04-11T20:32:05.00 10.0 undecidable manual PG! 310 0.2886 -2.46 0
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