Earthquake with magnitude of Md 3.0 on date 22-07-1987 and time 00:39:16 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude Md 3.0 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 21-07-1987 22:39:16 (UTC)
  • 22-07-1987 00:39:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.31, 15.25 at 123 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
Milazzo ME 10 31646 31646
Venetico ME 14 3911 35557
Spadafora ME 15 5021 40578
Pace del Mela ME 15 6239 46817
San Filippo del Mela ME 16 7115 53932
Torregrotta ME 16 7431 61363
Merì ME 16 2338 63701
CondrĂ² ME 16 493 64194
Valdina ME 17 1355 65549
Gualtieri SicaminĂ² ME 17 1807 67356
Villafranca Tirrena ME 18 8584 75940
Roccavaldina ME 18 1133 77073
Barcellona Pozzo di Gotto ME 19 41583 118656
San Pier Niceto ME 19 2837 121493
Santa Lucia del Mela ME 19 4650 126143

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Messina (238439 inhabitants)
41 Km NW of Reggio di Calabria (183035 inhabitants)
78 Km N of Acireale (52622 inhabitants)
91 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
Bulletin
Rev1000
Md 3.0
ML-VAX 2.6
1987-07-21
22:39:16
38.31 15.25 123 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 52639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-07-21 22:39:16 ± 0.476
Latitude 38.31 ± 0.02
Longitude 15.25 ± 0.05
Depth (km) 123 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 52639

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) 5178.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.01651
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 52639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:50:50

ML:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 52639
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
--.MMN.Z. 1987-07-21T22:40:08.60 10.0 undecidable manual S 19 0.0151 0.04 0.4
--.TS9.Z. 1987-07-21T22:40:06.50 10.0 undecidable manual S 31 0.0142 -0.24 0.3
--.GRI.Z. 1987-07-21T22:39:55.00 10.0 undecidable manual S 60 0.0094 -1.37 0
--.SO9.Z. 1987-07-21T22:39:50.68 10.0 undecidable manual S 110 0.0061 0.02 0.4
--.MGR.Z. 1987-07-21T22:39:49.19 10.0 undecidable manual P 7 0.0165 0.62 0.3
--.CSI.Z. 1987-07-21T22:39:47.60 10.0 undecidable manual P 28 0.0151 0.94 0.1
--.MMN.Z. 1987-07-21T22:39:46.50 10.0 undecidable manual P 19 0.0151 -0.15 1.7
--.ROI.Z. 1987-07-21T22:39:46.20 10.0 undecidable manual P 38 0.0146 0.23 0.8
--.ATN.Z. 1987-07-21T22:39:46.50 10.0 undecidable manual S 132 0.002 0.11 0.4
--.TS9.Z. 1987-07-21T22:39:45.24 10.0 positive manual P 31 0.0142 -0.36 1.3
--.SE2.Z. 1987-07-21T22:39:42.80 10.0 undecidable manual P 58 0.0121 0.05 2
--.MEU.Z. 1987-07-21T22:39:41.19 10.0 positive manual P 195 0.0112 -0.51 1.1
--.CZI.Z. 1987-07-21T22:39:40.20 10.0 undecidable manual P 37 0.0102 -0.34 1.6
--.GRI.Z. 1987-07-21T22:39:39.34 10.0 positive manual P 60 0.0094 -0.27 1.8
--.FE2.Z. 1987-07-21T22:39:37.20 10.0 undecidable manual P 112 0.0064 0.61 0.8
--.SO9.Z. 1987-07-21T22:39:36.43 10.0 negative manual P 110 0.0061 0.12 2.1
--.ATN.Z. 1987-07-21T22:39:34.12 10.0 positive manual P 132 0.002 0.27 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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