MPA 00Z 300hPa height 1987 - - - - - - - - - - - 8923.3 1988 8900.9 9168.5 9145.4 8939.2 8954.4 8828.3 8892.2 8727.5 8863.6 8807.2 8882.1 8885.3 1989 9004.5 9104.5 9103.9 8834.8 8860.0 8819.2 8982.0 8898.7 8853.3 8941.6 8983.0 8964.2 1990 - 9189.5 9027.1 8761.2 8901.4 8796.8 8899.5 8740.0 8831.2 8835.4 8826.1 8908.2 1991 9141.7 9068.7 9012.3 8945.0 8814.3 8775.6 8841.6 8863.5 8877.4 8839.2 8898.0 8897.6 1992 9127.9 9004.5 9060.0 9082.9 8773.3 8762.5 8867.1 8844.0 8842.5 8830.4 8956.5 9028.3 1993 8877.8 9136.4 9050.8 8921.9 8871.3 8887.8 8777.1 8847.8 8869.3 8963.9 8962.0 8893.8 1994 9066.6 8960.0 9063.4 8917.1 8771.9 8818.2 8794.0 8850.8 8786.8 8812.6 8963.9 8960.6 1995 9061.2 9057.4 - 9093.8 8878.3 8656.5 8593.6 8668.6 - 8968.1 8933.0 9031.2 1996 8976.8 9047.2 9040.4 8942.2 8930.3 8802.6 8903.3 8828.3 8901.5 8881.2 8896.7 9032.8 1997 9059.6 8976.4 9139.6 8919.3 8978.1 8844.2 8737.8 8788.0 - - - - 1998 8947.8 9142.3 9044.7 9122.2 8994.5 8922.9 8743.3 8744.6 8797.6 8857.0 8959.0 8945.6 1999 9061.0 8990.0 9061.5 9081.7 8862.2 8792.9 8815.2 8841.7 8791.9 8921.5 9056.4 8996.9 2000 9032.4 9102.7 9058.9 8975.2 8997.8 8854.8 8800.3 8758.3 8785.6 8835.6 8854.1 8799.4 2001 8989.2 8948.1 8992.0 8905.4 8908.0 8791.0 8725.5 8893.0 8912.1 9054.6 8970.0 9052.5 2002 9066.2 9139.3 8904.0 8960.7 8786.6 8748.5 8827.9 8895.5 8851.7 8777.3 8822.9 9021.0 2003 8932.8 9083.9 9040.0 9002.3 8949.3 8726.9 8835.2 8873.5 8860.0 8861.3 8807.9 8896.1 2004 9120.0 9240.7 9098.1 8875.9 8937.4 8826.0 8801.0 8864.6 8766.9 8894.5 9017.7 8971.2 2005 8960.6 9220.4 9014.7 8932.1 8814.7 8782.5 8855.5 8818.3 8964.2 8868.3 8878.3 8950.3 2006 9051.0 9141.4 9042.4 8958.5 9016.5 8829.3 8778.0 8787.3 8791.1 8935.0 8885.9 8946.7 2007 9032.6 8971.5 8986.2 8833.6 8910.0 - - - 8966.7 8851.4 8803.1 9014.3 2008 9064.7 9130.0 9120.0 8805.2 8895.3 8825.0 8812.9 8710.4 8983.5 8900.0 8858.4 9071.1 2009 9062.2 9028.5 9021.1 8866.4 8788.0 8854.1 8779.4 8759.6 8865.0 8825.2 8738.0 8946.3 2010 8954.8 8965.8 9065.9 8951.5 8921.4 8815.3 8822.6 8840.8 8850.7 8974.6 9005.2 8884.5 2011 9086.1 9193.7 9064.8 8880.0 8925.6 8806.7 8779.0 8783.9 8830.0 8928.7 8988.6 9129.7 2012 9122.7 8950.4 9044.6 8902.9 8857.5 8676.7 8671.0 8960.3 8873.8 8817.5 8926.4 8855.0 2013 9113.2 9038.8 9102.5 9123.6 8837.0 8757.6 8808.2 8718.9 8896.8 8920.4 8883.0 8873.6 2014 8914.8 9045.9 8971.4 8994.8 8891.3 8865.4 8858.5 8826.7 8864.6 8880.0 8895.0 8918.2 2015 9003.3 9059.6 9076.3 8964.6 8899.6 8726.0 8734.3 8805.6 8742.8 8934.8 8947.1 8918.9 2016 9027.3 9054.4 9146.6 8932.0 9050.0 8989.6 8835.5 8802.7 9015.4 8975.7 8907.0 8918.2 2017 8956.9 9162.3 9097.3 8977.5 8990.0 8705.2 8809.2 8816.7 8866.1 8820.7 8926.8 8931.1 2018 9047.0 9154.6 9013.3 8890.9 8887.4 8790.0 8856.1 8850.7 8848.2 8854.0 8939.0 9060.7 2019 8944.7 8989.6 9093.4 8933.6 8865.4 8846.6 8822.4 8787.7 8790.3 8902.9 8893.3 8936.1 2020 8987.0 9097.1 9160.0 9055.8 8936.7 8788.9 8758.0 8750.0 8820.0 8947.3 - 8989.0 2021 - 9191.9 9099.4 9113.3 8961.0 8937.0 - 8822.0 8947.9 8866.2 8978.7 9166.9 2022 9080.8 - - 8895.8 8925.0 8851.7 8744.7 8824.6 8961.8 8984.3 9073.1 9050.6 2023 9157.3 9085.8 8960.0 8936.7 8867.1 8821.2 8801.4 8745.9 8810.0 8822.2 8914.7 9018.3 2024 9113.5 9186.9 8935.9 8938.1 - - - - - - - -