The 10 historical earthquakes nearest to reference event 06110605343c
located at 45.5157 122.6478 that occurred prior to 06110605343c. 
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.

______________________________________________________________________
NEAREST HISTORICAL EARTHQUAKES SORTED BY DISTANCE FROM REFERENCE EVENT

Year MoDy  Hr:Mn  Depth   Mag   Distance Azimuth      Event Location
           (UT)    (km)             (km)   (Deg)
1941 1229  18:37    0.0   5.0        3.0    45.6	     0.0 km   S of Portland, OR
1961 1107  21:30    0.0   3.9        3.0    45.6	     0.0 km   S of Portland, OR
1953 1216  04:32    0.0   5.0        4.4   246.8	     7.4 km WSW of Portland, OR
1968 0513  18:52    8.0   3.6        9.4    20.3	     6.8 km   N of Portland, OR
1968 0127  08:28   34.0   3.8       11.0    17.7	     8.4 km   N of Portland, OR
1962 1106  03:36   18.0   5.5       11.0    20.8	     8.3 km NNE of Portland, OR
1877 1012  17:00    0.0   5.4       11.7    98.5	    10.2 km ESE of Portland, OR
2003 0424  19:26   17.2   3.9       14.9   331.4	    14.3 km  NW of Portland, OR
2003 0725  20:48   17.4   3.0       15.4   333.4	    14.8 km  NW of Portland, OR
2004 0226  01:51   18.9   3.0       16.7   330.3	    16.2 km  NW of Portland, OR

_____________________________________________________
NEAREST HISTORICAL EARTHQUAKES SORTED CHRONOLOGICALLY

Year MoDy  Hr:Mn  Depth   Mag   Distance Azimuth      Event Location
           (UT)    (km)             (km)   (Deg)
1877 1012  17:00    0.0   5.4       11.7    98.5	    10.2 km ESE of Portland, OR
1941 1229  18:37    0.0   5.0        3.0    45.6	     0.0 km   S of Portland, OR
1953 1216  04:32    0.0   5.0        4.4   246.8	     7.4 km WSW of Portland, OR
1961 1107  21:30    0.0   3.9        3.0    45.6	     0.0 km   S of Portland, OR
1962 1106  03:36   18.0   5.5       11.0    20.8	     8.3 km NNE of Portland, OR
1968 0127  08:28   34.0   3.8       11.0    17.7	     8.4 km   N of Portland, OR
1968 0513  18:52    8.0   3.6        9.4    20.3	     6.8 km   N of Portland, OR
2003 0424  19:26   17.2   3.9       14.9   331.4	    14.3 km  NW of Portland, OR
2003 0725  20:48   17.4   3.0       15.4   333.4	    14.8 km  NW of Portland, OR
2004 0226  01:51   18.9   3.0       16.7   330.3	    16.2 km  NW of Portland, OR