Casey 12Z 300hPa height 1957 - - - 8484.6 8433.4 8458.5 8303.5 8295.5 8237.2 8421.8 8483.1 8657.8 1958 8637.4 8528.2 8449.9 8394.1 8521.7 8286.2 8393.0 8208.1 8157.1 8284.6 8403.1 8517.0 1959 8575.6 8567.2 8574.8 8466.2 8397.5 8329.5 8268.5 8286.7 8125.7 8363.3 8310.0 8659.7 1960 8579.4 8541.7 8315.4 8370.0 8350.7 8309.7 8231.1 8269.2 8184.6 8278.8 8442.7 8545.2 1961 8608.5 8687.6 8496.7 8408.5 8391.7 8450.0 - 8326.9 - - 8470.0 8482.7 1962 8487.5 8508.8 8416.7 8372.2 8347.1 8388.8 8205.5 8222.6 8249.2 8298.4 8495.5 8489.7 1963 - - - - - - - - - - - - 1964 - 8556.1 8460.4 - - - - - 8164.7 8287.0 8521.5 8657.7 1965 8648.3 8662.0 8461.4 - - - - - - - - - 1966 8583.8 8651.7 8660.8 - - - - - - - - - 1967 - - - - - - - - - - - - 1968 - - - - - - - - - 8364.1 8510.4 8555.4 1969 8666.5 8586.5 - - - - - - - 8361.1 8411.3 8561.3 1970 8635.9 8521.6 8528.5 - - - - - - 8316.4 8480.0 8677.9 1971 8712.1 8647.4 8377.4 - - - - - - 8333.8 8487.1 8671.3 1972 8660.3 8549.3 8519.0 - - - - - - - 8416.0 8609.0 1973 8655.8 8521.9 8421.0 - - - - - - 8381.0 8482.7 8507.2 1974 8602.8 8547.9 8405.7 - - - - - - 8399.2 8522.1 8663.8 1975 8731.5 8589.6 8567.7 - - - - - - 8355.0 8432.4 8575.0 1976 8699.3 8576.6 8507.5 - - - - - - 8310.4 8533.3 8750.0 1977 8707.8 8595.8 8467.9 - - - - - - 8183.8 8345.0 - 1978 - - - - - - - - - - - - 1979 - - - - - - - - - - - - 1980 - - - - - - - - - - - - 1981 - - - - - - - - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - - 1984 - - - - - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - - - - - 1987 - - - - - - - - - - - - 1988 - - - - - 8490.8 8269.8 8331.2 8426.6 8440.1 8437.7 8518.7 1989 8630.0 8542.5 8440.3 8432.8 8229.3 8318.3 8262.3 8347.6 8348.5 8370.3 8421.7 8783.2 1990 8675.2 8576.7 8522.3 8593.0 8516.5 8358.6 8417.6 8258.7 8195.0 8362.6 8493.3 8650.3 1991 8534.7 8620.4 8518.1 8464.6 8380.4 8457.7 8531.2 8321.4 8255.9 8258.5 8549.3 8615.3 1992 8644.1 8641.2 8546.7 8377.5 8468.3 8534.8 8311.9 8303.7 8158.5 8329.2 8447.5 8519.3 1993 8642.6 8534.4 8486.8 8355.2 8233.4 8285.7 8231.8 8152.1 8239.4 8240.5 8381.6 8481.6 1994 8630.1 8506.2 8439.5 8345.9 8415.0 8569.7 8340.9 8208.3 8366.5 8282.5 8504.5 8460.3 1995 8544.4 8525.2 8498.3 8404.9 8324.2 8399.9 8620.8 8334.1 8194.3 8309.7 8518.2 8569.7 1996 8652.6 8596.0 8445.2 8453.7 8284.8 8463.2 8399.2 8402.2 8435.2 8303.4 8503.6 8575.7 1997 8578.7 8536.2 8466.9 8369.1 8380.8 8421.9 8207.8 8238.4 8233.1 8305.8 8558.6 8609.4 1998 8549.8 8549.9 8432.0 8305.5 8290.7 8338.6 8292.0 8351.5 8300.4 8300.2 8488.3 8458.8 1999 8528.3 8570.2 8492.6 8307.5 8286.2 8456.0 8271.8 8270.4 8278.0 8283.3 8426.6 8457.8 2000 8548.5 8522.3 8456.9 8494.3 8285.4 8391.1 8338.8 8327.8 8393.2 8219.0 8560.3 8646.0 2001 8634.2 8701.6 8510.7 8330.3 8425.2 8321.2 8356.7 8211.1 8227.2 8324.7 8456.8 8637.3 2002 8564.2 8546.1 8631.7 8473.2 8579.5 8459.1 8402.0 8249.1 8310.1 8458.1 8437.6 8580.4 2003 8699.3 8748.3 8513.7 8380.6 8376.1 8444.9 8265.7 8205.9 8311.4 8312.6 8472.8 8660.0 2004 8655.6 8575.5 8443.0 8388.9 8424.6 8314.7 - - - - - - 2005 - - - - - - - - - - - 8742.6 2006 8584.2 8535.3 8456.9 8481.0 8198.1 8270.2 8251.6 8371.3 8401.1 8290.1 8483.1 8522.3 2007 8656.4 8535.6 8511.9 8501.9 8531.5 8475.3 8501.8 8360.9 8339.5 8334.3 8512.4 8485.6 2008 8530.3 8532.4 8458.8 8474.0 8432.2 8283.3 8319.6 8242.0 8203.0 8248.9 8526.7 8559.8 2009 8566.5 8603.3 8492.6 8414.4 8401.5 8398.5 8478.0 8324.3 8381.8 8308.9 8503.3 8527.9 2010 8672.9 8610.5 8523.4 8411.4 8312.5 8311.4 8196.7 8199.7 8358.5 8287.3 8386.8 8652.7 2011 8702.0 8465.1 8555.7 8523.6 - - - - - - 8512.8 8440.0 2012 8537.3 8549.1 8444.5 8438.9 8320.1 8390.7 8187.8 8230.0 8212.4 8375.6 8547.0 8584.6 2013 8648.5 8544.0 8373.8 8362.1 8356.0 8421.7 8318.0 8335.1 8483.3 8341.4 8562.6 8562.3 2014 8638.3 8547.3 8417.3 8335.6 8480.3 8335.0 8261.5 8205.6 8334.5 8312.0 8535.7 8489.5 2015 8594.9 8499.6 8425.5 8341.3 8286.7 8380.7 8256.4 8297.2 8237.4 8271.1 8460.7 8580.7 2016 8539.3 8486.4 8371.3 8403.7 8399.7 8232.4 8290.0 8304.7 8171.5 8350.3 8513.0 8605.3 2017 8658.0 8603.3 8477.2 - - 8296.9 8336.9 8242.1 8216.8 8330.3 8466.9 8560.3 2018 8573.9 8545.0 8457.1 8502.3 8353.5 8408.9 8359.3 8314.8 8190.7 8240.4 8367.3 8500.0 2019 8533.5 8601.1 8444.5 8446.9 8386.8 8353.9 8386.8 8362.6 8244.5 8393.2 8595.5 8661.9 2020 8679.7 8570.0 8403.8 8501.2 8406.7 8364.1 8440.3 8410.0 8388.6 8381.6 8487.2 8490.3 2021 8522.3 8521.2 8509.3 8371.5 8351.0 8270.0 8381.7 8345.0 8302.1 8426.9 8361.3 8607.7 2022 8546.2 8532.9 8445.0 8377.1 8443.1 8503.9 8342.5 8326.5 8304.2 8418.8 8330.0 8494.2 2023 8495.2 8573.6 8525.0 8456.3 8274.5 8419.3 8258.3 8143.7 8394.6 8340.3 8430.4 8541.3 2024 8592.3 8489.3 8442.0 8357.0 - - - - - - - -