The 10 historical earthquakes nearest to reference event 99011122041o
located at 45.3195 121.6538 that occurred prior to 99011122041o. 
The list includes events with magnitude (Mag) > 4.0 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)
1974 1213  03:28   22.0   4.0        7.4   144.6	    14.4 km SSE of Mount Hood, OR
1976 0417  02:11   15.0   4.0       65.8   105.5	    18.4 km   E of Maupin, OR
1976 0413  00:47   15.0   4.6       68.1   113.2	    20.6 km ESE of Maupin, OR
1877 1012  17:00    0.0   6.3       69.3   287.1	    10.2 km ESE of Portland, OR
1941 1229  18:37    0.0   5.0       79.4   287.9	     0.0 km   S of Portland, OR
1962 1106  03:36   18.0   5.5       80.5   293.8	     8.3 km NNE of Portland, OR
1993 0325  13:34   20.6   5.6       81.3   247.5	    23.0 km ESE of Woodburn, OR
1953 1216  04:32    0.0   5.0       84.4   284.1	     7.4 km WSW of Portland, OR
1961 0916  03:24    7.2   4.8       85.3   334.5	    21.4 km SSE of Mount St. Helens
1961 0916  11:46    7.2   4.0       85.7   334.4	    21.0 km SSE of Mount St. Helens

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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   6.3       69.3   287.1	    10.2 km ESE of Portland, OR
1941 1229  18:37    0.0   5.0       79.4   287.9	     0.0 km   S of Portland, OR
1953 1216  04:32    0.0   5.0       84.4   284.1	     7.4 km WSW of Portland, OR
1961 0916  03:24    7.2   4.8       85.3   334.5	    21.4 km SSE of Mount St. Helens
1961 0916  11:46    7.2   4.0       85.7   334.4	    21.0 km SSE of Mount St. Helens
1962 1106  03:36   18.0   5.5       80.5   293.8	     8.3 km NNE of Portland, OR
1974 1213  03:28   22.0   4.0        7.4   144.6	    14.4 km SSE of Mount Hood, OR
1976 0413  00:47   15.0   4.6       68.1   113.2	    20.6 km ESE of Maupin, OR
1976 0417  02:11   15.0   4.0       65.8   105.5	    18.4 km   E of Maupin, OR
1993 0325  13:34   20.6   5.6       81.3   247.5	    23.0 km ESE of Woodburn, OR