MPA 12Z 300hPa height 1987 - - - - - - - - - - - 8958.0 1988 8885.5 9160.4 9091.4 8933.5 8941.1 8795.6 8868.8 8724.5 8886.4 8795.2 8890.0 8909.5 1989 8983.4 9107.8 9068.8 8821.5 8898.8 8803.3 8976.9 8887.5 8870.0 8956.4 8968.1 8951.9 1990 - 9201.0 9025.2 8757.9 8876.2 8804.0 8869.5 8724.1 8839.5 8838.7 8824.0 8912.1 1991 9134.2 9092.7 9013.5 8952.1 8784.6 8779.1 8802.9 8852.9 8858.0 8868.6 8864.3 8876.3 1992 9093.3 9001.1 9068.8 9057.9 8763.8 8736.9 8895.0 8847.4 8835.4 8808.9 8987.0 9005.4 1993 8881.1 9126.8 9033.6 8912.1 8880.7 8884.6 8782.9 8843.2 8853.0 8949.2 8960.0 8892.7 1994 9051.2 8938.9 9067.9 8900.0 8776.1 8807.6 8797.3 8844.3 8768.6 8797.8 8975.5 8978.9 1995 9080.0 9071.7 - 9082.5 8874.8 8652.8 8593.9 8664.2 - 8930.0 8938.2 9054.6 1996 8965.6 9030.0 8989.0 8931.0 8930.7 8785.6 8931.6 8826.1 8915.6 8866.9 8887.3 9031.2 1997 9045.2 8978.3 9140.8 8890.5 8960.7 8825.2 8685.0 8802.6 - - - - 1998 8951.0 9089.5 9018.6 9165.8 8986.8 8906.9 8735.7 8744.3 8818.6 8863.2 8951.2 8938.9 1999 9065.8 8996.2 9085.8 9062.9 8866.4 8803.3 8804.6 8843.0 8766.2 8917.6 9051.2 8969.7 2000 9006.9 9092.4 9033.6 8987.6 8966.8 8830.7 8763.4 8742.9 8766.2 8863.1 8849.6 8781.2 2001 9002.9 8929.6 8998.2 8908.2 8907.9 8787.7 8733.9 8891.0 8898.6 9029.7 8968.1 9058.7 2002 9052.4 9120.4 8908.2 8909.5 8781.5 8718.1 8819.3 8892.2 8839.6 8783.8 8822.4 8983.9 2003 8903.3 9055.8 9033.8 9013.2 8934.8 8728.5 8834.4 8879.7 8852.5 8838.3 8790.7 8889.0 2004 9089.2 9243.8 9081.6 8859.3 8950.0 8800.3 8812.3 8885.5 8754.2 8868.8 9022.4 8983.4 2005 8962.0 9205.4 8991.0 8897.8 8799.4 8740.0 8853.9 8828.6 8967.5 8867.7 8880.3 8926.0 2006 9035.7 9127.7 9023.5 8970.3 9014.5 8827.0 8766.0 8787.7 8799.6 8852.9 8886.4 8934.6 2007 9042.6 8970.9 8963.9 8836.7 8858.8 8717.9 8723.7 8807.4 8963.2 8826.7 8807.9 8990.3 2008 9040.0 9110.0 9120.3 8784.6 8870.7 8825.3 8799.6 8722.9 8981.7 8846.1 8897.0 9040.7 2009 - - - - - - - - - - - - 2010 - - - - - - - - - - - - 2011 - - 9197.0 - - - - - - - - - 2012 - - - - - - - - - - - - 2013 - - - - - - - - - - - - 2014 - - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - - - - - - - - - - - 2018 - - - - - - - - - - - - 2019 - - - - - - - - - - - - 2020 - - - - - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - - - - - - - - - 2024 - - - - - - - - - - - -