Earthquake with magnitude of Md 2.3 on date 19-02-1991 and time 17:12:40 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude Md 2.3 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 19-02-1991 17:12:40 (UTC)
  • 19-02-1991 18:12:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.33, 15.42 at 130 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
Villafranca Tirrena ME 11 8584 8584
Spadafora ME 13 5021 13605
Venetico ME 13 3911 17516
Saponara ME 15 3988 21504
Valdina ME 16 1355 22859
Torregrotta ME 17 7431 30290
Roccavaldina ME 17 1133 31423
Rometta ME 18 6650 38073
Messina ME 19 238439 276512
CondrĂ² ME 19 493 277005
Pace del Mela ME 20 6239 283244
Monforte San Giorgio ME 20 2777 286021
Milazzo ME 20 31646 317667

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Messina (238439 inhabitants)
31 Km NW of Reggio di Calabria (183035 inhabitants)
83 Km N of Acireale (52622 inhabitants)
97 Km N 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 2.0
1991-02-19
17:12:40
38.33 15.43 130 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 136139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-02-19 17:12:40 ± 0.512
Latitude 38.33 ± 0.02
Longitude 15.43 ± 0.05
Depth (km) 130 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 136139

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) 4996.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 215
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00348
Epicentral distance of station farthest from the epicenter (degree) 0.01627
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 136139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:06:56

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 136139
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
--.TDS.Z. 1991-02-19T17:13:29.73 10.0 undecidable manual S 27 0.0135 0.21 0.5
--.GRI.Z. 1991-02-19T17:13:18.69 10.0 undecidable manual S 57 0.0083 -0.34 0.4
--.SOI.Z. 1991-02-19T17:13:14.89 10.0 undecidable manual S 117 0.0049 0.69 0.1
--.MGR.Z. 1991-02-19T17:13:12.62 10.0 undecidable manual P 3 0.0163 0.37 0.6
--.CSI.Z. 1991-02-19T17:13:10.00 10.0 undecidable manual P 24 0.0144 0.19 1.1
--.TDS.Z. 1991-02-19T17:13:08.29 10.0 undecidable manual P 27 0.0135 -0.44 0.5
--.SE2.Z. 1991-02-19T17:13:05.80 10.0 undecidable manual P 55 0.0109 0.23 1.2
--.GRI.Z. 1991-02-19T17:13:02.61 10.0 undecidable manual P 57 0.0083 -0.06 1.8
--.RI2.Z. 1991-02-19T17:13:01.85 10.0 positive manual P 83 0.0074 -0.09 1.7
--.SOI.Z. 1991-02-19T17:13:00.00 10.0 undecidable manual P 117 0.0049 0.12 1.7
--.FE2.Z. 1991-02-19T17:13:00.28 10.0 positive manual P 119 0.0053 0.15 1.6
--.DR2.Z. 1991-02-19T17:12:59.60 10.0 negative manual P 51 0.0045 -0.5 0.4
--.MO9.Z. 1991-02-19T17:12:58.77 10.0 undecidable manual P 147 0.0035 -0.19 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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