Halley 12Z 700hPa height 1957 - - - 2681.9 2575.4 2558.4 2497.1 2543.5 2580.4 2590.1 2650.6 2722.0 1958 2661.8 2672.6 2584.3 2591.6 2587.3 2540.6 2565.8 2476.8 2477.3 2524.8 2619.5 2611.3 1959 2653.0 2619.2 2614.3 2578.8 2580.5 2615.9 2504.6 2587.1 2502.2 2520.2 2500.7 2694.7 1960 2639.7 2643.4 2512.1 2583.1 2602.9 2573.9 2515.7 2520.4 2563.2 2572.7 2556.2 2626.7 1961 2688.3 2714.0 2630.5 2571.4 2587.2 2598.9 2538.4 2521.0 2584.1 2471.9 2592.1 2609.0 1962 2632.4 2634.4 2573.8 2548.5 2565.6 2633.8 2512.9 2509.8 2542.7 2531.1 2600.7 2636.6 1963 2644.2 2620.9 2549.4 2562.6 2619.6 2519.8 2548.3 2649.2 2575.1 2545.7 2545.4 2677.8 1964 2734.9 2681.1 2574.3 2546.7 2451.1 2712.2 2694.5 2530.9 2462.5 2496.0 2650.3 2677.4 1965 2710.5 2729.3 2605.4 2599.7 2632.6 2485.4 2552.4 2581.5 2565.9 2564.8 2554.0 2732.5 1966 2654.9 2684.4 2671.2 2525.1 2620.3 2566.7 2562.7 2465.1 2493.9 2531.3 2630.9 2677.6 1967 2746.1 2688.4 2619.0 2608.2 2586.6 2592.9 2497.5 2534.0 2543.4 2549.8 2599.9 2678.4 1968 2675.8 2679.7 2657.1 2613.2 2618.3 2545.1 2523.5 2509.9 2463.3 2614.0 2651.7 2679.6 1969 2747.9 2672.1 2574.8 2623.1 2587.5 2572.5 2502.0 2536.4 2563.0 2547.0 2592.1 2688.2 1970 2656.7 2643.9 2607.1 2576.4 2590.3 2559.2 2555.3 2501.9 2617.8 2594.0 2634.4 2711.7 1971 2721.2 2621.1 2594.0 2644.2 2612.1 2529.4 2573.6 2592.6 2513.2 2542.0 2607.8 2700.1 1972 2718.3 2659.1 2638.2 2626.7 2599.4 2561.8 2614.9 2592.1 2538.3 2552.0 2574.8 2681.5 1973 2711.5 2628.5 2554.5 2540.8 2604.9 2595.6 2485.1 2514.7 2525.9 2597.1 2579.6 2611.7 1974 2699.5 2600.2 2588.3 2590.6 2529.4 2597.4 2520.9 2632.1 2462.3 2572.0 2650.4 2710.3 1975 2709.4 2659.4 2602.1 2512.0 2599.9 2533.5 2608.6 - - - - 2705.4 1976 2720.5 2649.2 2593.1 2569.1 2542.7 2571.5 2559.9 2452.0 2490.4 2494.9 2671.1 2799.0 1977 2730.2 2640.3 2602.8 2665.2 - 2620.4 2522.9 2604.8 2470.2 2515.3 2598.0 2671.7 1978 2646.9 2596.4 2615.7 2626.8 2624.9 2593.8 2583.1 2480.8 2490.2 2565.4 2615.3 2651.7 1979 2677.9 2623.1 2578.3 2555.1 2516.8 2536.7 2439.0 2531.4 2550.7 2545.2 2627.7 2713.5 1980 2679.4 2681.9 2619.9 2601.5 2530.1 2541.1 2550.2 2556.6 2578.7 2537.3 2621.3 2682.9 1981 - 2662.0 2661.8 2599.6 2588.3 2529.5 2579.2 - - - - - 1982 - - 2551.1 2525.3 2548.1 2563.6 2505.6 2475.1 2471.9 2557.3 2625.5 2731.1 1983 2707.6 2676.1 2594.4 2591.5 2666.3 2579.5 2545.2 2513.1 2538.7 2521.9 2566.4 2644.7 1984 - 2682.7 2571.1 2597.1 2620.3 2524.9 2574.5 2584.4 2583.3 2538.7 2586.8 2769.7 1985 2733.5 2655.3 2616.9 2597.0 2580.6 2575.4 2440.9 2549.2 2476.9 2553.9 2530.1 2608.4 1986 2689.0 2734.5 2664.4 2578.3 2604.5 2598.9 2540.3 2491.2 2436.9 2502.0 2583.6 2643.8 1987 2745.1 2781.9 2602.8 2603.7 2596.7 2595.0 2566.9 2467.8 2538.5 2544.7 2554.6 2673.5 1988 2710.5 2635.6 2624.2 2574.5 2610.2 2645.1 2498.3 2581.6 2639.6 2674.8 2613.2 2646.7 1989 2695.9 2618.6 2634.2 2572.4 2470.5 2545.0 2531.4 2627.3 2596.6 2559.5 2627.6 2689.2 1990 2714.0 2628.5 2636.5 2641.6 2661.0 2632.6 2600.4 2529.1 2520.3 2556.6 2589.2 2662.8 1991 2651.9 2690.7 2595.9 2627.5 2558.0 2562.2 2562.8 2514.8 2595.6 2552.2 2629.5 2759.8 1992 - 2695.9 2547.0 2609.1 2642.9 2628.9 2504.4 2488.1 2545.0 2615.9 2565.9 2677.3 1993 2747.5 2641.0 2604.2 2576.5 2538.9 2536.9 2525.3 2510.3 2502.0 2511.1 2635.4 2641.0 1994 2667.4 2607.4 2577.7 2571.5 2601.1 2678.6 2543.9 2487.2 2566.6 2517.2 2657.3 2592.7 1995 2660.8 2617.3 2618.3 2563.1 2538.1 2595.2 2618.1 2523.7 2510.4 2587.2 2583.2 2604.4 1996 2674.0 2678.5 2582.2 2586.2 2554.6 2581.2 2504.7 2610.7 2600.3 2534.9 2622.5 2677.8 1997 2702.3 2636.8 2512.9 2567.1 2498.3 2545.9 2480.2 2505.7 2475.0 2505.2 2650.5 2674.0 1998 2677.8 2639.1 2590.5 2504.9 2504.6 2556.6 2525.2 2528.5 2532.8 2540.9 2572.3 2635.3 1999 2670.6 2658.6 2635.5 2531.9 2569.7 2654.2 2522.5 2471.3 2535.8 2507.4 2609.9 2568.2 2000 2611.8 2631.0 2634.7 2581.1 2569.6 2574.3 2600.1 2531.5 2573.8 2550.4 2640.5 2709.5 2001 2668.8 2670.5 2585.3 2526.9 2636.9 2535.9 2553.7 2476.8 2543.0 2468.0 2565.8 2600.4 2002 2658.8 2597.5 2642.1 2593.3 2611.9 2545.5 2552.9 2534.2 2542.3 2602.9 2586.0 2639.9 2003 2732.5 2681.8 2607.6 2534.4 2548.8 2589.7 2520.6 2496.1 2556.3 2568.4 2604.6 2707.5 2004 2658.6 2667.7 2585.7 2576.0 2573.8 2521.4 2489.1 2474.6 2579.1 2574.0 2622.2 2701.8 2005 2681.1 2612.9 2632.0 2562.0 2560.7 2597.3 2521.6 2546.6 2571.8 2573.2 2613.9 2737.6 2006 2672.5 2625.7 2629.3 2586.1 2484.7 2573.1 2511.6 2560.1 2548.5 2524.1 2579.6 2653.6 2007 2693.7 2629.1 2628.1 2598.3 2611.9 2622.2 2630.7 2548.5 2601.3 2554.8 2609.8 2584.5 2008 2644.2 2592.8 2585.9 2609.5 2626.1 2528.7 2539.2 2502.3 2607.5 2510.3 2567.4 2569.5 2009 2616.3 2635.4 2590.4 2546.6 2612.8 2600.6 2534.3 2587.3 2562.5 2509.9 2633.8 2648.9 2010 2731.9 2681.7 2587.7 2549.0 2565.6 2557.7 2492.1 2537.2 2566.7 2549.3 2588.7 2679.8 2011 2699.9 2653.6 2664.3 2608.7 2565.0 2586.1 2577.3 2588.8 2564.5 2551.4 2617.9 2547.5 2012 2595.1 2633.4 2597.0 2601.5 2584.9 2540.8 2541.7 2526.5 2535.0 2520.8 2632.0 2690.8 2013 2671.3 2594.6 2562.2 2563.9 2531.5 2631.6 2538.7 2618.5 2604.2 2534.3 2563.5 2639.5 2014 2688.2 2635.6 2589.1 2609.4 2626.1 2582.6 2505.4 - - 2545.6 2582.5 2601.1 2015 2643.9 2585.3 2550.9 2551.5 2561.6 2540.6 2483.4 2456.8 2471.7 2571.7 2580.6 2665.6 2016 2625.0 2621.8 2535.0 2549.3 2526.5 2510.2 2511.4 2550.0 2472.4 2546.3 2651.0 2691.0 2017 2720.9 2664.1 - - - - - - - - - 2647.5 2018 2640.0 2583.3 - - - - - - - - - 2663.2 2019 2620.6 2607.3 - - - - - - - - - 2750.3 2020 2690.1 - - - - - - - - - - - 2021 - - - - - - - - - - - 2565.0 2022 2689.3 - - - - - - - - - - 2602.6 2023 2621.2 - - - - - - - - - - 2614.3 2024 2672.6 - - - - - - - - - - -