Marion 00Z 500hPa height 1968 - - - - 5359.4 - 5398.1 - - 5376.2 5467.0 - 1969 5401.9 5408.9 - - - - - - - - - 5292.3 1970 5468.6 5593.4 - 5432.8 5448.5 - - - - 5396.6 5350.9 5485.3 1971 5495.8 - - 5398.4 - 5467.3 - 5477.6 - - 5425.8 - 1972 - - 5611.6 - - - - - 5430.7 - - - 1973 - 5642.0 5594.0 5562.7 5392.3 5493.3 - - - - - - 1974 - 5594.4 - 5529.0 - - - - 5348.9 - 5389.0 5416.7 1975 - 5588.7 5590.0 5505.0 5440.6 - - 5389.1 5459.2 - 5396.0 5503.8 1976 5523.3 5573.5 5502.7 5542.1 5532.1 5500.4 5377.4 5383.0 5525.7 5452.7 5432.7 5385.8 1977 5446.7 5568.6 5541.2 5470.9 5420.5 5368.2 5391.5 5385.2 5436.7 5441.4 5433.8 5447.4 1978 5457.4 5466.2 5541.6 5520.4 5405.0 5433.8 5475.3 5366.4 5389.3 5441.3 5376.3 5500.0 1979 5494.4 5550.8 5594.3 5501.4 5494.4 5451.1 5489.0 5461.6 5346.7 5423.9 5446.3 5415.0 1980 5526.7 5556.9 5631.4 5484.3 5509.7 5428.7 5415.4 5459.7 5393.9 5402.8 5376.3 5449.7 1981 5450.0 5619.3 5531.6 5477.2 5553.8 5455.4 5454.3 5445.2 5424.3 5449.7 5466.7 5499.0 1982 5508.9 5537.6 5570.7 5611.3 5450.7 5508.9 5423.3 5445.5 5444.8 5469.7 5409.0 5426.1 1983 5471.0 5553.2 5495.5 5535.0 5512.7 5434.8 5398.8 5410.7 5435.3 5486.2 5519.6 5475.8 1984 5507.9 5573.4 5539.7 5523.3 5431.3 5446.2 5434.3 5384.8 5426.4 5541.4 5467.2 5360.0 1985 5505.7 5583.9 5555.5 5581.6 5453.8 5448.6 5455.3 5408.4 5451.1 5473.2 5601.7 5494.5 1986 5513.3 5534.3 5494.3 5525.3 5397.9 5451.7 5449.4 5521.0 5446.9 5508.4 5486.2 5462.7 1987 5483.8 5542.6 5526.1 5508.6 5443.3 5439.0 5480.6 5407.2 5395.0 5507.2 5461.0 5416.8 1988 5477.9 5552.3 5528.0 5512.9 5374.5 5425.0 5300.3 5320.6 5347.0 5337.0 5450.3 5448.4 1989 5560.7 5613.7 5616.3 5488.5 5482.9 5402.0 5398.4 5369.0 5382.0 5443.2 5474.3 5495.3 1990 5560.0 5629.6 5611.0 5543.4 5371.0 5293.0 5399.0 5406.3 5425.4 5430.0 5468.7 5460.6 1991 5457.7 5558.2 5523.9 5493.0 - 5501.5 5428.3 5379.0 5390.3 5489.5 5439.7 5508.0 1992 5451.7 5607.2 5626.2 5533.3 5354.5 5341.0 5308.6 5418.7 5368.1 5444.8 5461.7 5382.6 1993 5452.3 5634.8 5589.0 5559.7 5390.3 5446.2 5459.0 5444.3 5436.7 5465.3 5496.8 5441.3 1994 5455.0 5610.0 5590.3 5516.0 5529.0 5341.8 5371.4 5360.4 5395.3 5437.7 5398.6 5514.8 1995 5550.3 5541.8 5531.7 5445.3 5505.3 5391.4 5279.4 5460.3 5450.3 5424.2 5431.0 5570.0 1996 5494.2 5571.0 5569.4 5574.3 5557.7 5367.7 5452.9 5440.0 5396.4 5491.0 5452.3 5491.6 1997 5526.7 5582.9 5540.6 5558.0 5517.6 5419.6 5435.3 5383.0 5510.3 5411.7 5480.0 5450.6 1998 5486.0 5491.5 5545.5 5534.7 5520.0 5376.4 5401.9 5437.7 5358.0 5447.1 5465.7 5530.0 1999 5564.0 5504.1 5534.2 5533.0 5463.1 5446.3 5450.0 5470.0 5394.3 5494.5 5448.7 5485.0 2000 5547.2 5566.4 5516.1 5539.3 5488.6 5446.4 5427.5 5383.9 5305.9 5529.4 5545.2 5336.8 2001 5589.7 5563.6 5535.6 5577.6 5442.3 5471.7 5450.4 5374.5 5404.2 5449.3 5482.3 5460.3 2002 5565.9 5520.8 5529.6 5607.8 5421.2 5402.1 5405.5 5475.9 5400.4 5447.9 5397.4 5502.7 2003 5434.5 5558.2 5573.9 5571.8 5458.3 5446.7 5358.3 5399.7 5343.3 5459.4 5453.3 5445.5 2004 5513.3 5591.2 5509.2 5503.3 5454.0 5473.5 5382.6 5420.5 5436.8 5419.6 5411.1 5510.0 2005 5454.3 5539.2 - 5553.9 5481.5 5357.7 5392.1 5363.1 5392.5 5491.5 5494.5 5334.0 2006 5465.2 5508.1 5492.6 5446.8 5483.8 5423.2 5446.2 5478.6 5394.2 5517.4 5431.4 5438.3 2007 5488.0 5559.5 5621.5 5588.8 5394.1 5504.3 5361.8 5392.1 5372.5 5466.2 5389.3 5576.3 2008 5482.5 5535.2 5575.0 5435.7 5484.6 5561.6 5472.9 5408.1 5365.4 5417.1 5430.0 5458.4 2009 5511.0 5548.6 5558.2 5493.1 5578.9 5483.3 5408.0 5486.5 5342.0 5485.5 5532.7 5415.0 2010 5518.4 5569.6 5490.5 5430.4 5428.7 5450.3 5433.7 5450.0 5423.7 5469.2 5430.8 5467.9 2011 5586.5 5656.1 5539.7 5520.0 5534.4 5452.1 5411.0 5512.4 5312.5 5430.7 5360.7 5551.9 2012 5516.1 5474.3 5526.5 5543.7 5410.7 5352.8 5417.0 5526.4 - - - - 2013 5416.5 5591.5 5546.0 - - - - - - - - - 2014 - - - 5423.3 - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - 5593.6 5513.6 5305.5 5334.1 5413.3 5411.4 5422.2 5510.0 5408.6 2018 - 5574.4 5540.0 5461.4 5486.8 5401.9 5493.6 5308.4 5388.7 5543.5 5508.0 5516.4 2019 5508.8 5490.5 5541.2 5552.2 5495.7 5432.1 5314.5 5314.8 5399.2 - 5449.0 5462.9 2020 5520.8 5532.0 5579.3 5463.3 - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - 5444.4 5446.1 5377.1 5476.9 5368.0 5551.0 5471.5 5518.3 2024 5654.1 5676.3 5614.5 - - - - - - - - -