Earthquake with magnitude of Md 2.3 on date 20-01-1991 and time 15:49:50 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude Md 2.3 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 20-01-1991 15:49:50 (UTC)
  • 20-01-1991 16:49:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.27, 15.69 at 155 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
Scilla RC 2 4964 4964
Fiumara RC 6 1018 5982
Campo Calabro RC 7 4536 10518
San Roberto RC 7 1750 12268
Villa San Giovanni RC 7 13784 26052
Calanna RC 10 934 26986
Bagnara Calabra RC 10 10255 37241
Laganadi RC 11 413 37654
Sant'Alessio in Aspromonte RC 12 343 37997
Santo Stefano in Aspromonte RC 14 1263 39260
Sant'Eufemia d'Aspromonte RC 14 4120 43380
Messina ME 14 238439 281819
Sinopoli RC 16 2089 283908
Palmi RC 17 18930 302838
MelicuccĂ  RC 17 930 303768
San Procopio RC 17 534 304302
Seminara RC 17 2811 307113
Reggio di Calabria RC 18 183035 490148
Delianuova RC 20 3352 493500

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Messina (238439 inhabitants)
18 Km N of Reggio di Calabria (183035 inhabitants)
86 Km NE of Acireale (52622 inhabitants)
96 Km SW of Lamezia Terme (70714 inhabitants)
100 Km NE of Catania (314555 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 Md 2.3
ML-VAX 1.7
1991-01-20
15:49:50
38.27 15.69 155 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 134719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-01-20 15:49:50 ± 0.821
Latitude 38.27 ± 0.08
Longitude 15.69 ± 0.11
Depth (km) 155 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 134719

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) 12782.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00016
Epicentral distance of station farthest from the epicenter (degree) 0.01206
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 134719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:05:36

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 134719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GRI.Z. 1991-01-20T15:50:33.00 10.0 undecidable manual S 45 0.0071 1.14 0.1
--.ATN.Z. 1991-01-20T15:50:27.39 10.0 undecidable manual S 239 0.0019 0.43 0.4
--.SC9.Z. 1991-01-20T15:50:26.82 10.0 undecidable manual S 119 0.0002 0.26 0.5
--.MEU.Z. 1991-01-20T15:50:19.41 10.0 positive manual P 210 0.0121 0.2 1.8
--.PZI.Z. 1991-01-20T15:50:19.53 10.0 undecidable manual P 206 0.0121 0.27 0.8
--.GRI.Z. 1991-01-20T15:50:15.00 10.0 undecidable manual P 45 0.0071 0.55 0.8
--.MNO.Z. 1991-01-20T15:50:15.32 10.0 negative manual P 247 0.0076 0.44 1.8
--.SC9.Z. 1991-01-20T15:50:10.83 10.0 negative manual P 119 0.0002 -0.55 1.8
--.ATN.Z. 1991-01-20T15:50:10.73 10.0 negative manual P 239 0.0019 -0.89 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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