Earthquake with magnitude of M 3.3 on date 25-04-1987 and time 00:22:30 (Italy) in region Costa Albanese meridionale (ALBANIA)

A magnitude M 3.3 earthquake occured in region: Costa Albanese meridionale (ALBANIA), on

  • 24-04-1987 22:22:30 (UTC)
  • 25-04-1987 00:22:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.01, 19.9 at 9 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
Rev 1000 M 3.3 1987-04-24
22:22:30
40.01 19.9 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 45609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-24 22:22:30 ± 0.481
Latitude 40.01 ± 0.04
Longitude 19.90 ± 0.03
Depth (km) 9 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 45609

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) 4745
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.03513
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

M:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 45609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:30:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SO9.Z. 1987-04-24T22:24:06.50 10.0 undecidable manual SN 238 0.032 0.93 0.2
--.ATN.Z. 1987-04-24T22:23:29.40 10.0 undecidable manual PN 243 0.0351 -0.69 0.9
--.SGO.Z. 1987-04-24T22:23:26.50 10.0 undecidable manual PN 280 0.0319 1.41 0.4
--.SO9.Z. 1987-04-24T22:23:23.70 10.0 undecidable manual PN 238 0.032 -1.58 0.3
--.MG9.Z. 1987-04-24T22:23:21.50 10.0 undecidable manual PN 273 0.0299 -0.59 1
--.CDM.Z. 1987-04-24T22:23:17.00 10.0 undecidable manual PN 292 0.0266 -0.02 1.4
--.LCI.Z. 1987-04-24T22:23:15.00 10.0 undecidable manual SN 284 0.0126 0.64 0.5
--.TS9.Z. 1987-04-24T22:23:15.50 10.0 undecidable manual PN 263 0.0248 1.21 0.5
--.GR9.Z. 1987-04-24T22:23:15.50 10.0 undecidable manual PN 247 0.0264 -1.2 0.6
--.TIR.Z. 1987-04-24T22:23:14.00 10.0 undecidable manual SN 358 0.012 1.2 0.4
--.ORI.Z. 1987-04-24T22:23:13.50 10.0 undecidable manual PN 272 0.0238 0.73 1
--.VAY.Z. 1987-04-24T22:23:09.60 10.0 undecidable manual PN 56 0.0217 0.05 1.6
--.BRT.Z. 1987-04-24T22:23:08.00 10.0 undecidable manual PN 293 0.0203 0.46 1.4
--.SKO.Z. 1987-04-24T22:23:07.50 10.0 undecidable manual PN 30 0.0205 -0.25 1.5
--.SDA.Z. 1987-04-24T22:23:05.60 10.0 undecidable manual PN 351 0.0182 1.3 0.6
--.PE1.Z. 1987-04-24T22:23:04.50 10.0 undecidable manual PN 293 0.0184 -0.04 1.6
--.PHP.Z. 1987-04-24T22:23:00.00 10.0 undecidable manual PN 13 0.0155 -0.16 1.6
--.KZN.Z. 1987-04-24T22:22:56.70 10.0 undecidable manual PN 77 0.0131 0.23 1.5
--.TIR.Z. 1987-04-24T22:22:54.00 10.0 undecidable manual PN 358 0.012 -0.82 1
--.LCI.Z. 1987-04-24T22:22:54.50 10.0 undecidable manual PN 284 0.0126 -1.22 0.6
--.OHR.Z. 1987-04-24T22:22:52.60 10.0 undecidable manual PN 31 0.0117 -1.64 0.3
--.SRN.Z. 1987-04-24T22:22:37.60 10.0 undecidable manual SG 149 0.0013 0.8 0.5
--.SRN.Z. 1987-04-24T22:22:34.00 10.0 positive manual PG 149 0.0013 -0.02 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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