Earthquake with magnitude of Md 2.2 on date 20-02-1994 and time 05:27:50 (Italy) in region 5 km N Troina (EN)

A magnitude Md 2.2 earthquake occured in region: 5 km N Troina (EN), on

  • 20-02-1994 04:27:50 (UTC)
  • 20-02-1994 05:27:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8260, 14.6120 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
Troina EN 5 9373 9373
San Teodoro ME 8 1403 10776
CesarĂ² ME 9 2439 13215
Cerami EN 9 2006 15221
Capizzi ME 12 3176 18397
Gagliano Castelferrato EN 14 3593 21990
Maniace CT 18 3765 25755
Regalbuto EN 19 7277 33032
Bronte CT 20 19172 52204

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km W of Acireale (52622 inhabitants)
55 Km NW of Catania (314555 inhabitants)
61 Km NE of Caltanissetta (63360 inhabitants)
90 Km NE of Gela (75827 inhabitants)
92 Km W of Messina (238439 inhabitants)
96 Km W of Reggio di Calabria (183035 inhabitants)
98 Km N of Vittoria (63339 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 2.2 1994-02-20
04:27:50
37.826 14.612 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 205529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-02-20 04:27:50 ± 0.309
Latitude 37.8260 ± 0.0161
Longitude 14.6120 ± 0.0265
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 205529

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) 2933.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 205529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:13:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SOI.Z. 1994-02-20T04:28:31.23 10.0 undecidable manual SN 77 1.1544 1.18 0.1
--.PZI.Z. 1994-02-20T04:28:21.13 10.0 undecidable manual SG 160 0.8103 1.59 0
--.AU9.Z. 1994-02-20T04:28:17.75 10.0 undecidable manual SG 139 0.7437 0.32 0.6
--.SOI.Z. 1994-02-20T04:28:12.59 10.0 undecidable manual PN 77 1.1544 -0.76 0.7
--.PL9.Z. 1994-02-20T04:28:07.44 10.0 undecidable manual SG 294 0.3996 1.23 0.1
--.PZI.Z. 1994-02-20T04:28:06.79 10.0 undecidable manual PG 160 0.8103 -0.49 1.2
--.AU9.Z. 1994-02-20T04:28:05.85 10.0 undecidable manual PG 139 0.7437 -0.21 1.6
--.PL9.Z. 1994-02-20T04:27:59.13 10.0 undecidable manual PG 294 0.3996 -0.45 1.4
--.MNO.Z. 1994-02-20T04:27:56.28 10.0 undecidable manual SG 31 0.1221 0.61 0.5
--.MNO.Z. 1994-02-20T04:27:53.44 10.0 positive manual PG 31 0.1221 -0.06 3.7
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