The 10 historical earthquakes nearest to reference event 03012512151c
located at 46.9567 120.7617 that occurred prior to 03012512151c. 
The list includes events with magnitude (Mag) > 3.0 and gives distance
and azimuth  from the reference event to each historical earthquake.

Date is given in Universal Time (UT). Subtract 8 hours to get Pacific
Standard time (PST) or 7 hours for PDT. Azimuth is the compass
direction (measured clockwise from North, 0-360 degrees) of the
earthquake from the location of the reference event. Usually, depths
listed as 0.0 km are either unknown or very unreliable.

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NEAREST HISTORICAL EARTHQUAKES SORTED BY DISTANCE FROM REFERENCE EVENT

Year MoDy  Hr:Mn  Depth   Mag   Distance Azimuth      Event Location
           (UT)    (km)             (km)   (Deg)
1983 1205  07:24    7.8   3.8        6.0   141.4	    16.1 km  SW of Ellensburg, WA
1991 0222  20:56   13.3   3.2       12.7   138.7	    16.5 km SSW of Ellensburg, WA
1992 1026  07:56    0.0   3.5       13.5   163.6	    21.9 km  SW of Ellensburg, WA
1978 0627  02:18   12.4   3.6       18.3   241.0	    35.6 km WSW of Ellensburg, WA
1987 0611  19:50   17.2   3.0       20.6   165.4	    24.6 km  NW of Yakima, Wa
1991 0201  20:19    6.6   3.4       22.3   135.7	    20.6 km   S of Ellensburg, WA
1977 0713  07:15    3.3   3.9       22.5   311.4	    35.3 km WNW of Ellensburg, WA
1979 0407  03:47   16.9   3.0       23.8    84.0	     7.1 km ESE of Ellensburg, WA
1982 0926  10:09    3.2   3.4       24.0   245.6	    41.3 km WSW of Ellensburg, WA
1995 0630  22:16   11.2   3.0       24.4    46.8	    12.1 km   N of Ellensburg, WA

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NEAREST HISTORICAL EARTHQUAKES SORTED CHRONOLOGICALLY

Year MoDy  Hr:Mn  Depth   Mag   Distance Azimuth      Event Location
           (UT)    (km)             (km)   (Deg)
1977 0713  07:15    3.3   3.9       22.5   311.4	    35.3 km WNW of Ellensburg, WA
1978 0627  02:18   12.4   3.6       18.3   241.0	    35.6 km WSW of Ellensburg, WA
1979 0407  03:47   16.9   3.0       23.8    84.0	     7.1 km ESE of Ellensburg, WA
1982 0926  10:09    3.2   3.4       24.0   245.6	    41.3 km WSW of Ellensburg, WA
1983 1205  07:24    7.8   3.8        6.0   141.4	    16.1 km  SW of Ellensburg, WA
1987 0611  19:50   17.2   3.0       20.6   165.4	    24.6 km  NW of Yakima, Wa
1991 0201  20:19    6.6   3.4       22.3   135.7	    20.6 km   S of Ellensburg, WA
1991 0222  20:56   13.3   3.2       12.7   138.7	    16.5 km SSW of Ellensburg, WA
1992 1026  07:56    0.0   3.5       13.5   163.6	    21.9 km  SW of Ellensburg, WA
1995 0630  22:16   11.2   3.0       24.4    46.8	    12.1 km   N of Ellensburg, WA