30 mb zonal wind index - CDAS ORIGINAL DATA YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1979 1.85 4.11 0.87 -3.58 -12.91 -19.61 -21.28 -22.25 -22.71 -23.33 -22.21 -17.00 1980 -10.12 -5.66 -2.92 2.30 6.23 7.32 8.73 9.60 12.65 13.09 12.14 9.72 1981 8.21 6.71 7.50 8.27 3.00 -3.50 -5.24 -8.25 -8.60 -9.54 -9.63 -12.32 1982 -12.53 -14.72 -16.68 -15.56 -15.27 -15.95 -8.97 -1.60 4.19 8.26 9.50 10.34 1983 10.84 11.38 12.16 13.80 11.92 3.11 -3.40 -6.54 -7.76 -10.13 -10.30 -11.43 1984 -10.66 -11.35 -12.99 -14.59 -15.06 -17.98 -25.40 -27.91 -25.45 -21.60 -13.20 -8.17 1985 -0.38 4.16 6.35 11.10 13.55 13.88 11.09 11.07 11.70 11.83 11.62 9.87 1986 8.73 10.14 11.95 9.10 3.55 -2.17 -5.26 -9.61 -10.22 -9.61 -8.02 -10.52 1987 -9.94 -11.38 -14.24 -16.21 -20.06 -21.48 -13.97 -0.61 5.86 9.34 9.22 8.40 1988 7.80 6.16 5.85 6.58 5.45 0.41 -3.97 -2.59 -2.31 -1.54 -0.85 -2.44 1989 -2.88 -3.57 -1.64 -1.94 -5.47 -9.39 -13.87 -16.99 -18.84 -21.31 -19.02 -13.55 1990 -8.72 -6.75 0.94 5.71 11.45 12.89 12.53 12.62 13.20 12.38 11.54 10.67 1991 8.70 8.43 8.99 10.68 3.81 -3.35 -10.37 -14.70 -13.97 -12.22 -12.28 -12.69 1992 -13.97 -14.34 -16.85 -17.80 -15.97 -15.35 -12.06 -4.76 1.29 3.93 6.32 8.18 1993 9.62 10.79 11.35 12.59 13.55 6.54 0.37 -1.21 -1.15 -4.05 -5.77 -6.01 1994 -7.65 -9.85 -11.31 -14.72 -18.04 -23.09 -28.66 -27.03 -19.08 -10.30 -0.31 5.92 1995 8.37 8.00 8.78 11.78 14.91 15.61 11.73 9.50 6.97 3.42 -0.86 -4.65 1996 -5.80 -6.91 -9.94 -11.09 -14.89 -17.04 -23.94 -25.86 -26.03 -23.41 -18.09 -9.87 1997 -3.59 1.93 4.49 9.20 12.50 14.67 14.57 11.36 12.00 11.39 8.22 3.04 1998 0.74 -2.88 -4.99 -7.16 -12.56 -17.61 -22.62 -23.96 -20.99 -18.24 -13.29 -5.16 1999 1.40 3.97 6.79 12.14 15.05 15.18 13.42 12.26 11.29 9.43 6.54 5.82 2000 4.62 4.48 5.72 5.17 -0.30 -7.26 -13.25 -15.35 -15.49 -14.21 -14.57 -13.60 2001 -15.02 -14.84 -16.22 -17.29 -20.44 -23.01 -24.54 -21.68 -14.31 -10.83 -3.89 1.47 2002 4.63 7.99 9.31 14.02 14.15 13.25 10.05 10.59 8.89 7.66 4.45 -0.51 2003 -1.40 -1.45 -3.31 -8.57 -13.93 -17.72 -23.00 -24.65 -22.52 -20.35 -17.87 -11.39 2004 -4.84 2.60 5.45 10.45 12.96 11.75 9.95 8.81 7.21 7.83 4.40 2.26 2005 -0.46 -0.88 -0.34 -6.65 -15.10 -20.60 -24.21 -25.87 -27.81 -28.77 -29.55 -25.05 2006 -18.84 -11.25 -0.39 5.00 10.35 11.46 10.75 10.75 10.19 10.86 10.09 6.20 2007 2.60 2.42 1.24 -5.19 -14.07 -21.34 -24.93 -27.42 -28.15 -29.06 -27.61 -19.49 2008 -12.43 -4.71 2.18 6.42 11.52 13.45 13.26 11.62 11.59 11.04 9.12 10.46 2009 10.71 12.33 11.44 9.10 1.55 -5.48 -12.21 -14.46 -13.82 -11.70 -13.83 -15.57 2010 -16.02 -16.98 -19.68 -23.57 -26.28 -25.05 -9.85 1.44 6.57 10.83 12.16 10.96 2011 9.18 10.05 10.44-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2012-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2013-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2014-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2015-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2016-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2017-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2018-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2019-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 2020-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99-999.99 30 mb zonal wind index - CDAS ANOMALY YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1979 2.60 4.57 0.98 -4.02 -12.01 -15.37 -14.93 -16.29 -18.34 -19.72 -19.73 -14.90 1980 -9.37 -5.20 -2.81 1.86 7.13 11.56 15.08 15.56 17.02 16.70 14.62 11.82 1981 8.96 7.17 7.61 7.83 3.90 0.74 1.11 -2.29 -4.23 -5.93 -7.15 -10.22 1982 -11.78 -14.26 -16.57 -16.00 -14.37 -11.71 -2.62 4.36 8.56 11.87 11.98 12.44 1983 11.59 11.84 12.27 13.36 12.82 7.35 2.95 -0.58 -3.39 -6.52 -7.82 -9.33 1984 -9.91 -10.89 -12.88 -15.03 -14.16 -13.74 -19.05 -21.95 -21.08 -17.99 -10.72 -6.07 1985 0.37 4.62 6.46 10.66 14.45 18.12 17.44 17.03 16.07 15.44 14.10 11.97 1986 9.48 10.60 12.06 8.66 4.45 2.07 1.09 -3.65 -5.85 -6.00 -5.54 -8.42 1987 -9.19 -10.92 -14.13 -16.65 -19.16 -17.24 -7.62 5.35 10.23 12.95 11.70 10.50 1988 8.55 6.62 5.96 6.14 6.35 4.65 2.38 3.37 2.06 2.07 1.63 -0.34 1989 -2.13 -3.11 -1.53 -2.38 -4.57 -5.15 -7.52 -11.03 -14.47 -17.70 -16.54 -11.45 1990 -7.97 -6.29 1.05 5.27 12.35 17.13 18.88 18.58 17.57 15.99 14.02 12.77 1991 9.45 8.89 9.10 10.24 4.71 0.89 -4.02 -8.74 -9.60 -8.61 -9.80 -10.59 1992 -13.22 -13.88 -16.74 -18.24 -15.07 -11.11 -5.71 1.20 5.66 7.54 8.80 10.28 1993 10.37 11.25 11.46 12.15 14.45 10.78 6.72 4.75 3.22 -0.44 -3.29 -3.91 1994 -6.90 -9.39 -11.20 -15.16 -17.14 -18.85 -22.31 -21.07 -14.71 -6.69 2.17 8.02 1995 9.12 8.46 8.89 11.34 15.81 19.85 18.08 15.46 11.34 7.03 1.62 -2.55 1996 -5.05 -6.45 -9.83 -11.53 -13.99 -12.80 -17.59 -19.90 -21.66 -19.80 -15.61 -7.77 1997 -2.84 2.39 4.60 8.76 13.40 18.91 20.92 17.32 16.37 15.00 10.70 5.14 1998 1.49 -2.42 -4.88 -7.60 -11.66 -13.37 -16.27 -18.00 -16.62 -14.63 -10.81 -3.06 1999 2.15 4.43 6.90 11.70 15.95 19.42 19.77 18.22 15.66 13.04 9.02 7.92 2000 5.37 4.94 5.83 4.73 0.60 -3.02 -6.90 -9.39 -11.12 -10.60 -12.09 -11.50 2001 -14.27 -14.38 -16.11 -17.73 -19.54 -18.77 -18.19 -15.72 -9.94 -7.22 -1.41 3.57 2002 5.38 8.45 9.42 13.58 15.05 17.49 16.40 16.55 13.26 11.27 6.93 1.59 2003 -0.65 -0.99 -3.20 -9.01 -13.03 -13.48 -16.65 -18.69 -18.15 -16.74 -15.39 -9.29 2004 -4.09 3.06 5.56 10.01 13.86 15.99 16.30 14.77 11.58 11.44 6.88 4.36 2005 0.29 -0.42 -0.23 -7.09 -14.20 -16.36 -17.86 -19.91 -23.44 -25.16 -27.07 -22.95 2006 -18.09 -10.79 -0.28 4.56 11.25 15.70 17.10 16.71 14.56 14.47 12.57 8.30 2007 3.35 2.88 1.35 -5.63 -13.17 -17.10 -18.58 -21.46 -23.78 -25.45 -25.13 -17.39 2008 -11.68 -4.25 2.29 5.98 12.42 17.69 19.61 17.58 15.96 14.65 11.60 12.56 2009 11.46 12.79 11.55 8.66 2.45 -1.24 -5.86 -8.50 -9.45 -8.09 -11.35 -13.47 2010 -15.27 -16.52 -19.57 -24.01 -25.38 -20.81 -3.50 7.40 10.94 14.44 14.64 13.06 2011 9.93 10.51 10.55-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2012-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2013-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2014-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2015-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2016-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2017-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2018-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2019-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2020-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 30 mb zonal wind index - CDAS STANDARDIZED DATA YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1979 0.23 0.40 0.09 -0.36 -1.06 -1.36 -1.32 -1.44 -1.63 -1.75 -1.75 -1.32 1980 -0.83 -0.46 -0.25 0.16 0.63 1.02 1.34 1.38 1.51 1.48 1.30 1.05 1981 0.79 0.64 0.67 0.69 0.35 0.07 0.10 -0.20 -0.38 -0.53 -0.63 -0.91 1982 -1.04 -1.26 -1.47 -1.42 -1.27 -1.04 -0.23 0.39 0.76 1.05 1.06 1.10 1983 1.03 1.05 1.09 1.18 1.14 0.65 0.26 -0.05 -0.30 -0.58 -0.69 -0.83 1984 -0.88 -0.97 -1.14 -1.33 -1.25 -1.22 -1.69 -1.95 -1.87 -1.59 -0.95 -0.54 1985 0.03 0.41 0.57 0.94 1.28 1.61 1.55 1.51 1.42 1.37 1.25 1.06 1986 0.84 0.94 1.07 0.77 0.39 0.18 0.10 -0.32 -0.52 -0.53 -0.49 -0.75 1987 -0.81 -0.97 -1.25 -1.48 -1.70 -1.53 -0.68 0.47 0.91 1.15 1.04 0.93 1988 0.76 0.59 0.53 0.54 0.56 0.41 0.21 0.30 0.18 0.18 0.14 -0.03 1989 -0.19 -0.28 -0.14 -0.21 -0.40 -0.46 -0.67 -0.98 -1.28 -1.57 -1.47 -1.01 1990 -0.71 -0.56 0.09 0.47 1.09 1.52 1.67 1.65 1.56 1.42 1.24 1.13 1991 0.84 0.79 0.81 0.91 0.42 0.08 -0.36 -0.77 -0.85 -0.76 -0.87 -0.94 1992 -1.17 -1.23 -1.48 -1.62 -1.34 -0.98 -0.51 0.11 0.50 0.67 0.78 0.91 1993 0.92 1.00 1.02 1.08 1.28 0.96 0.60 0.42 0.29 -0.04 -0.29 -0.35 1994 -0.61 -0.83 -0.99 -1.34 -1.52 -1.67 -1.98 -1.87 -1.30 -0.59 0.19 0.71 1995 0.81 0.75 0.79 1.00 1.40 1.76 1.60 1.37 1.00 0.62 0.14 -0.23 1996 -0.45 -0.57 -0.87 -1.02 -1.24 -1.13 -1.56 -1.76 -1.92 -1.75 -1.38 -0.69 1997 -0.25 0.21 0.41 0.78 1.19 1.68 1.85 1.53 1.45 1.33 0.95 0.46 1998 0.13 -0.21 -0.43 -0.67 -1.03 -1.18 -1.44 -1.60 -1.47 -1.30 -0.96 -0.27 1999 0.19 0.39 0.61 1.04 1.41 1.72 1.75 1.61 1.39 1.16 0.80 0.70 2000 0.48 0.44 0.52 0.42 0.05 -0.27 -0.61 -0.83 -0.99 -0.94 -1.07 -1.02 2001 -1.26 -1.27 -1.43 -1.57 -1.73 -1.66 -1.61 -1.39 -0.88 -0.64 -0.13 0.32 2002 0.48 0.75 0.83 1.20 1.33 1.55 1.45 1.47 1.17 1.00 0.61 0.14 2003 -0.06 -0.09 -0.28 -0.80 -1.15 -1.19 -1.48 -1.66 -1.61 -1.48 -1.36 -0.82 2004 -0.36 0.27 0.49 0.89 1.23 1.42 1.44 1.31 1.03 1.01 0.61 0.39 2005 0.03 -0.04 -0.02 -0.63 -1.26 -1.45 -1.58 -1.76 -2.08 -2.23 -2.40 -2.03 2006 -1.60 -0.96 -0.02 0.40 1.00 1.39 1.52 1.48 1.29 1.28 1.11 0.74 2007 0.30 0.25 0.12 -0.50 -1.17 -1.52 -1.65 -1.90 -2.11 -2.26 -2.23 -1.54 2008 -1.04 -0.38 0.20 0.53 1.10 1.57 1.74 1.56 1.41 1.30 1.03 1.11 2009 1.02 1.13 1.02 0.77 0.22 -0.11 -0.52 -0.75 -0.84 -0.72 -1.01 -1.19 2010 -1.35 -1.46 -1.73 -2.13 -2.25 -1.84 -0.31 0.66 0.97 1.28 1.30 1.16 2011 0.88 0.93 0.94-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2012-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2013-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2014-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2015-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2016-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2017-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2018-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2019-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90 2020-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90-999.90