Halley 12Z 500hPa height 1957 - - - 5093.2 4948.7 4900.6 4856.8 4898.9 4979.5 4990.1 5084.1 5169.8 1958 5100.0 5113.8 4993.8 4990.1 4945.5 4915.3 4926.8 4832.8 4857.5 4919.8 5038.1 5024.6 1959 5108.6 5055.7 5043.5 4962.3 4988.9 5006.4 4852.5 4954.8 4860.9 4911.9 4893.3 5143.4 1960 5074.8 5079.9 4931.6 4994.1 4993.8 4958.8 4898.9 4878.2 4955.7 4975.3 4963.8 5056.6 1961 5150.8 5154.7 5045.8 4962.1 4995.3 4972.0 4900.5 4889.4 4964.8 4884.2 5019.4 5039.5 1962 5082.5 5071.9 4996.5 4952.5 4966.2 5009.8 4882.9 4874.6 4927.7 4932.7 5014.4 5055.5 1963 5115.4 5035.1 4953.5 4941.3 5014.0 4899.2 4921.8 5039.5 4965.9 4937.7 4967.6 5113.8 1964 5212.4 5135.5 4994.2 4946.5 4808.9 5108.2 5083.5 4883.9 4828.7 4885.7 5080.3 5100.6 1965 5155.9 5168.0 5029.9 4992.7 5040.3 4854.4 4927.4 4961.2 4953.9 4967.1 4977.8 5181.8 1966 5103.8 5141.0 5095.2 4937.1 5020.3 4944.1 4921.3 4830.5 4868.1 4928.4 5056.9 5129.0 1967 5212.6 5116.4 5046.9 5011.3 4987.1 4982.5 4856.2 4908.0 4928.3 4935.0 4993.3 5133.0 1968 5106.6 5128.1 5093.6 5032.9 5026.0 4917.5 4896.2 4879.2 4815.7 5038.1 5083.2 5128.7 1969 5196.1 5110.9 4982.7 5036.0 4976.1 4934.4 4855.4 4914.9 4958.4 4936.6 4995.4 5163.0 1970 5105.9 5084.8 5027.2 4983.3 4994.0 4931.8 4937.7 4870.0 5022.9 5009.4 5063.4 5161.0 1971 5179.5 5049.8 5027.5 5093.1 4986.1 4913.3 4939.1 4984.3 4890.4 4938.1 5028.7 5142.4 1972 5155.8 5099.3 5043.5 5019.7 5010.3 4926.1 4998.7 4975.5 4920.3 4953.9 5003.3 5131.6 1973 5163.1 5060.7 4976.1 4934.1 4997.3 4970.0 4849.3 4892.6 4909.3 5011.4 4996.1 5046.1 1974 5147.7 5039.6 5022.1 4995.9 4909.7 4983.4 4878.4 5012.2 4845.5 4968.1 5066.9 5148.0 1975 5175.7 5105.8 5029.6 4892.9 4982.3 4896.2 4972.0 - - - - 5157.6 1976 5179.2 5090.8 5029.4 4984.3 4926.0 4964.6 4929.5 4812.8 4859.6 4869.1 5094.8 5261.0 1977 5173.1 5064.5 5027.5 5103.6 - 5018.0 4889.2 4979.2 4831.8 4912.8 5031.9 5083.8 1978 5094.0 5022.1 5050.7 5073.6 5042.5 4979.2 4945.6 4855.0 4867.3 4974.8 5033.6 5081.3 1979 5147.2 5054.4 5014.8 4977.3 4896.8 4915.2 4796.8 4896.1 4942.7 4937.0 5044.0 5170.3 1980 5126.5 5130.0 5035.2 4993.3 4914.3 4919.2 4912.7 4913.1 4970.5 4940.0 5040.7 5118.8 1981 - 5106.7 5094.7 5011.4 4985.6 4901.0 4956.6 - - - - - 1982 - - 4975.0 4927.5 4947.1 4974.6 4859.2 4832.9 4856.7 4966.2 5052.0 5190.6 1983 5153.1 5125.0 5004.7 5008.6 5097.0 4970.5 4916.0 4902.1 4923.2 4913.2 4990.5 5097.1 1984 - 5131.6 4995.0 5013.8 5030.0 4891.1 4961.8 4977.7 4975.5 4933.9 5007.6 5246.2 1985 5205.2 5107.0 5056.7 5004.3 4962.7 4965.4 4830.7 4948.3 4876.2 4962.7 4940.3 5064.5 1986 5164.8 5214.1 5111.0 5002.5 4968.1 4978.3 4937.2 4857.5 4801.7 4893.0 5009.5 5102.7 1987 5203.6 5266.7 5030.0 5020.3 4993.0 4985.7 4941.7 4818.6 4916.2 4940.0 4984.6 5137.7 1988 5173.5 5076.3 5067.1 4988.9 5015.8 5027.9 4875.0 4995.7 5056.8 5091.7 5048.9 5101.9 1989 5169.0 5071.5 5085.5 4954.3 4872.6 4947.8 4933.9 5026.1 4993.4 4967.7 5064.1 5127.1 1990 5185.2 5065.9 5073.0 5056.0 5059.7 5028.8 4980.5 4904.8 4916.0 4970.4 5033.8 5108.1 1991 5117.0 5159.6 5006.8 5052.4 4948.2 4947.9 4933.7 4898.2 5002.9 4955.5 5051.5 5238.5 1992 - 5137.7 4940.4 5033.2 5040.5 4998.7 4886.1 4840.6 4934.6 5045.2 4987.6 5146.0 1993 5202.4 5080.2 5029.8 4979.7 4934.5 4909.6 4913.6 4901.7 4872.1 4907.8 5086.8 5086.6 1994 5131.5 5042.9 5011.6 4973.6 4997.5 5065.8 4897.1 4858.5 4972.1 4881.8 5090.7 5028.5 1995 5124.8 5052.2 5056.0 4967.2 4937.6 4993.4 4967.6 4876.9 4895.0 5007.7 5005.1 5056.0 1996 5123.0 5142.6 5018.8 4996.7 4961.7 4964.3 4874.2 5022.5 4978.6 4949.1 5061.1 5133.9 1997 5176.8 5070.8 4943.7 4983.0 4891.7 4924.8 4841.4 4880.9 4835.8 4877.2 5065.5 5125.9 1998 5149.5 5110.3 5026.7 4905.7 4892.3 4970.4 4918.7 4916.4 4923.7 4937.8 5009.7 5093.1 1999 5144.5 5113.0 5069.8 4943.2 4996.3 5046.6 4902.9 4845.0 4920.9 4940.5 5056.2 5005.5 2000 5047.0 5071.4 5079.6 4982.4 4975.3 4966.3 4991.8 4896.7 4938.9 4949.5 5067.1 5136.5 2001 5113.6 5118.3 4995.6 4914.8 5063.1 4905.4 4917.7 4846.6 4954.1 4854.9 4990.0 5044.7 2002 5118.3 5046.8 5080.0 5019.9 4989.6 4911.2 4928.6 4932.5 4941.1 5000.8 4984.5 5093.9 2003 5201.4 5145.7 5033.6 4942.4 4940.2 4965.3 4884.9 4891.5 4958.7 4978.2 5017.1 5162.0 2004 5111.8 5090.0 5024.7 4991.5 4967.4 4911.2 4867.4 4831.1 4997.3 4995.3 5045.2 5152.0 2005 5151.9 5065.7 5072.5 4987.9 4948.1 4961.4 4886.3 4937.4 4969.8 4991.5 5040.1 5180.6 2006 5117.8 5047.0 5096.5 4995.7 4865.1 4970.8 4901.8 4912.5 4923.9 4934.8 5018.0 5093.3 2007 5175.7 5060.3 5048.8 4981.5 5020.6 5014.1 5007.5 4928.2 4994.2 4950.8 5021.0 5033.7 2008 5087.5 5030.7 5004.9 5039.9 5015.5 4903.3 4925.0 4871.1 5029.0 4897.7 4980.4 4997.8 2009 5062.8 5072.0 5036.1 4940.6 5015.0 4989.4 4915.9 4959.4 4940.9 4904.3 5052.5 5098.4 2010 5207.3 5134.5 5012.8 4946.0 4987.5 4971.0 4886.2 4935.2 4981.0 4970.4 5013.3 5133.1 2011 5178.1 5112.4 5097.0 5027.4 4966.0 4967.6 4956.9 4970.9 4947.5 4940.6 5036.1 4970.7 2012 5036.1 5095.6 5034.7 5016.8 4989.7 4921.9 4923.8 4905.4 4925.1 4927.1 5061.7 5162.8 2013 5141.8 5034.4 4989.8 4986.6 4917.5 5042.4 4926.1 5011.6 5017.1 4926.3 4981.0 5101.5 2014 5128.4 5070.3 5014.7 5046.9 5051.6 4969.6 4887.3 - - 4945.5 4988.1 5042.7 2015 5078.3 5042.2 4982.9 4971.9 4974.2 4912.1 4868.6 4822.9 4836.1 4969.8 4997.7 5125.2 2016 5078.2 5080.0 4962.4 4965.7 4919.0 4909.9 4885.7 4925.2 4864.0 4948.9 5091.7 5127.1 2017 5179.3 5121.2 - - - - - - - - - 5110.1 2018 5083.2 5004.6 - - - - - - - - - 5130.6 2019 5074.1 5037.3 - - - - - - - - - 5231.1 2020 5160.3 - - - - - - - - - - - 2021 - - - - - - - - - - - 5006.5 2022 5169.4 - - - - - - - - - - 5041.9 2023 5072.7 - - - - - - - - - - 5059.4 2024 5135.4 - - - - - - - - - - -