The 10 historical earthquakes nearest to reference event 99013111055n
located at 48.2787 118.6820 that occurred prior to 99013111055n. 
The list includes events with magnitude (Mag) > 3.5 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)
1967 0606  17:12   33.0   3.6       32.3   254.4	    29.7 km NNW of Grand Coulee, WA
1966 1106  10:50    6.1   3.6       58.4   232.7	    22.6 km   W of Grand Coulee, WA
1975 0918  12:19    6.5   3.5       60.9   148.6	    57.5 km ESE of Grand Coulee, WA
1941 0407  09:25    0.0   4.5       68.2   272.3	     7.6 km SSW of Okanogan, WA
1918 1206  12:45    0.0   7.0       84.3   343.7	    69.3 km  SE of Penticton, BC
1979 0119  14:55    6.6   3.9       85.9   241.1	    25.3 km ENE of Chelan, WA
1963 1222  02:54    0.0   3.9       87.0   293.9	    28.3 km NNW of Okanogan, WA
1989 0509  18:28   15.6   4.5       87.2   266.9	    25.5 km  SW of Okanogan, WA
1997 0624  14:35    8.3   3.6       89.7   277.3	    22.5 km   W of Okanogan, WA
1997 0624  14:23   11.2   4.6       90.0   276.5	    23.0 km   W of Okanogan, WA

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NEAREST HISTORICAL EARTHQUAKES SORTED CHRONOLOGICALLY

Year MoDy  Hr:Mn  Depth   Mag   Distance Azimuth      Event Location
           (UT)    (km)             (km)   (Deg)
1918 1206  12:45    0.0   7.0       84.3   343.7	    69.3 km  SE of Penticton, BC
1941 0407  09:25    0.0   4.5       68.2   272.3	     7.6 km SSW of Okanogan, WA
1963 1222  02:54    0.0   3.9       87.0   293.9	    28.3 km NNW of Okanogan, WA
1966 1106  10:50    6.1   3.6       58.4   232.7	    22.6 km   W of Grand Coulee, WA
1967 0606  17:12   33.0   3.6       32.3   254.4	    29.7 km NNW of Grand Coulee, WA
1975 0918  12:19    6.5   3.5       60.9   148.6	    57.5 km ESE of Grand Coulee, WA
1979 0119  14:55    6.6   3.9       85.9   241.1	    25.3 km ENE of Chelan, WA
1989 0509  18:28   15.6   4.5       87.2   266.9	    25.5 km  SW of Okanogan, WA
1997 0624  14:23   11.2   4.6       90.0   276.5	    23.0 km   W of Okanogan, WA
1997 0624  14:35    8.3   3.6       89.7   277.3	    22.5 km   W of Okanogan, WA