Name: NH Vortex Area Units: million km!U2!N Level: 600 K Source: MERRA Missing: -9999.0 Climatology: 1978/1979-2011/2012 5-day boxcar smoother applied to all data. Date Data Minimum 10% 30% Mean 70% 90% Maximum 1996-10-01 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-02 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-03 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-04 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-05 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-06 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-07 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-08 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-09 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-10 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1996-10-11 -9999.0 5.95 7.07 9.32 11.58 15.70 19.82 21.89 1996-10-12 -9999.0 6.26 7.73 10.68 13.63 16.58 19.53 21.01 1996-10-13 -9999.0 6.58 7.57 9.54 11.51 13.95 16.40 17.62 1996-10-14 -9999.0 7.08 7.92 9.62 11.31 14.63 17.94 19.60 1996-10-15 -9999.0 8.89 9.92 11.29 15.67 21.75 32.55 41.32 1996-10-16 -9999.0 11.05 11.85 16.03 16.98 18.06 21.51 24.21 1996-10-17 -9999.0 10.60 11.42 12.60 13.48 17.11 20.16 24.17 1996-10-18 16.46 9.89 11.68 14.81 16.75 18.17 24.48 26.55 1996-10-19 18.14 10.06 10.93 14.56 17.48 18.20 24.69 27.62 1996-10-20 19.26 10.14 11.80 15.67 17.73 19.30 24.33 29.53 1996-10-21 21.52 10.19 11.86 14.97 17.45 19.05 24.55 27.09 1996-10-22 25.10 10.39 11.81 13.64 16.65 18.82 25.14 25.85 1996-10-23 27.55 10.46 11.78 14.63 17.26 19.19 25.67 30.89 1996-10-24 28.98 10.51 12.00 15.80 18.51 19.61 25.33 30.34 1996-10-25 26.12 10.32 12.35 15.94 17.82 19.96 25.26 29.81 1996-10-26 23.17 5.52 12.57 16.29 17.88 19.52 24.51 29.83 1996-10-27 21.11 5.21 12.61 16.31 17.59 18.98 24.80 29.41 1996-10-28 19.05 5.02 13.34 16.48 17.71 19.39 24.41 29.43 1996-10-29 17.32 9.49 12.82 16.94 17.73 18.51 24.07 29.72 1996-10-30 19.92 9.44 12.07 16.06 17.42 19.00 23.64 28.88 1996-10-31 22.43 9.72 11.65 16.12 17.50 19.56 23.74 28.80 1996-11-01 22.96 10.02 11.52 15.50 17.62 19.13 23.21 28.93 1996-11-02 22.63 10.19 11.09 15.89 16.60 18.80 23.50 29.14 1996-11-03 22.86 10.19 11.80 14.59 16.97 18.19 26.45 28.91 1996-11-04 21.39 10.33 12.64 14.73 16.64 18.44 25.95 29.25 1996-11-05 -9999.0 10.23 12.61 15.05 16.62 19.00 26.38 27.72 1996-11-06 18.95 9.62 14.00 15.59 16.98 18.95 25.36 27.13 1996-11-07 18.69 8.98 14.22 16.12 17.76 20.12 25.31 26.35 1996-11-08 18.93 8.67 13.03 15.90 17.40 20.10 24.31 26.19 1996-11-09 19.59 9.20 13.65 16.55 17.69 20.04 23.47 25.29 1996-11-10 19.82 9.62 14.25 16.15 17.82 20.52 23.65 25.68 1996-11-11 20.05 9.84 14.13 16.84 19.45 20.50 23.50 26.04 1996-11-12 22.19 9.84 13.56 16.94 19.20 21.04 22.95 25.95 1996-11-13 24.54 9.77 13.24 16.70 19.59 20.62 24.54 26.48 1996-11-14 27.11 9.65 13.52 16.50 18.99 20.61 25.90 29.21 1996-11-15 27.59 9.46 13.64 16.75 18.94 21.17 25.98 29.29 1996-11-16 27.60 9.95 13.98 16.61 18.44 20.62 25.82 28.56 1996-11-17 27.24 9.80 14.23 16.78 18.45 20.62 25.62 27.87 1996-11-18 26.98 9.77 13.75 16.35 18.52 21.17 25.26 27.46 1996-11-19 24.70 9.80 13.62 16.37 18.34 21.51 24.65 26.97 1996-11-20 24.82 9.93 14.27 16.25 18.13 21.81 24.70 29.81 1996-11-21 26.93 9.74 14.33 16.12 18.58 22.42 26.35 29.67 1996-11-22 26.51 10.15 14.36 16.43 19.94 22.79 26.41 29.70 1996-11-23 26.52 10.42 14.32 16.17 20.00 22.40 26.37 29.86 1996-11-24 -9999.0 10.54 14.09 16.00 19.81 22.55 25.52 29.70 1996-11-25 24.76 10.80 14.54 15.77 19.97 22.68 25.45 29.59 1996-11-26 -9999.0 10.91 14.29 16.02 19.96 22.54 25.64 29.15 1996-11-27 17.93 8.39 14.29 16.15 19.97 21.50 26.04 28.85 1996-11-28 14.81 8.34 14.02 15.99 20.23 22.86 26.12 28.54 1996-11-29 15.20 8.32 14.23 15.63 19.72 23.57 26.66 28.17 1996-11-30 16.05 8.25 14.86 16.10 20.04 23.54 27.46 28.15 1996-12-01 16.30 8.21 14.82 16.48 20.04 23.74 27.83 30.12 1996-12-02 16.36 10.11 14.33 16.47 19.43 23.19 28.21 30.38 1996-12-03 16.27 11.74 14.33 16.38 19.56 22.71 27.83 29.74 1996-12-04 16.55 13.04 14.52 16.58 19.30 22.49 27.84 32.11 1996-12-05 16.62 13.55 14.47 17.45 20.16 22.22 26.39 31.13 1996-12-06 17.38 13.93 14.70 17.74 19.63 22.80 25.18 30.47 1996-12-07 18.65 13.87 14.62 18.27 21.05 22.65 25.21 29.81 1996-12-08 19.61 13.91 15.01 19.29 21.63 23.36 26.37 29.90 1996-12-09 20.80 13.37 15.19 20.19 21.67 22.80 27.39 30.62 1996-12-10 22.05 12.83 14.92 19.66 21.77 22.57 27.02 31.18 1996-12-11 22.84 12.34 15.43 18.85 21.47 22.90 27.60 32.02 1996-12-12 22.64 10.58 16.38 19.14 21.01 22.74 26.85 31.23 1996-12-13 22.73 8.82 15.87 18.97 20.78 22.78 26.18 30.01 1996-12-14 22.44 7.30 15.91 19.27 20.98 22.89 25.51 30.27 1996-12-15 22.31 6.75 16.96 19.04 21.40 22.52 26.61 29.61 1996-12-16 22.43 6.34 16.82 20.23 21.47 22.47 26.21 30.44 1996-12-17 22.59 6.44 16.66 20.06 22.09 22.63 28.40 33.02 1996-12-18 22.57 6.46 17.61 20.78 22.01 23.97 28.84 33.06 1996-12-19 22.17 6.44 18.24 21.31 22.30 25.00 29.19 33.48 1996-12-20 22.11 6.44 18.14 21.05 23.02 25.35 30.10 33.48 1996-12-21 22.08 6.43 18.38 21.04 22.58 25.68 31.83 33.29 1996-12-22 21.89 7.16 18.77 20.97 22.54 26.17 31.81 34.57 1996-12-23 21.54 6.73 18.55 21.11 22.75 26.36 32.23 35.40 1996-12-24 21.50 6.60 17.36 20.95 22.77 27.18 32.11 36.58 1996-12-25 21.33 6.75 17.73 20.95 22.90 26.99 31.97 35.75 1996-12-26 20.67 6.94 18.92 20.63 23.62 27.20 31.70 36.25 1996-12-27 20.87 7.21 19.14 20.89 23.99 26.61 31.76 34.24 1996-12-28 21.55 8.80 18.98 20.04 24.39 26.72 31.77 33.21 1996-12-29 22.15 10.36 18.79 20.72 24.20 26.98 31.52 33.46 1996-12-30 22.06 11.57 19.32 20.76 24.55 27.11 31.65 33.50 1996-12-31 22.20 12.72 18.95 20.57 24.28 26.76 31.32 32.90 1997-01-01 21.75 8.43 18.34 20.67 23.68 27.08 31.12 31.96 1997-01-02 21.00 13.43 18.49 21.02 24.38 27.05 31.29 33.81 1997-01-03 20.57 7.22 18.15 20.38 23.74 26.87 31.12 34.45 1997-01-04 20.43 6.46 18.02 20.25 22.87 26.57 30.90 34.10 1997-01-05 20.31 6.35 17.67 20.18 23.22 26.50 30.44 32.67 1997-01-06 20.25 5.79 17.47 19.76 23.19 26.41 29.90 32.31 1997-01-07 20.20 5.65 18.23 19.76 22.87 26.74 29.54 32.52 1997-01-08 19.89 5.60 18.30 19.80 22.97 26.59 29.27 31.67 1997-01-09 19.69 7.94 18.15 19.38 23.14 27.05 29.33 31.49 1997-01-10 19.96 10.23 18.14 19.92 23.40 26.60 28.80 34.08 1997-01-11 19.88 12.54 17.82 20.40 23.08 26.45 28.33 35.66 1997-01-12 19.61 12.69 17.17 20.53 23.23 26.62 28.24 35.20 1997-01-13 19.64 12.44 17.16 20.67 22.89 26.45 28.22 35.85 1997-01-14 19.94 12.40 17.14 20.63 22.81 27.10 28.70 37.21 1997-01-15 19.75 10.74 17.03 19.27 22.73 25.75 29.48 35.83 1997-01-16 19.73 9.16 16.60 19.62 22.85 25.83 29.25 35.58 1997-01-17 19.89 7.70 16.60 20.87 22.85 26.25 28.31 35.68 1997-01-18 19.95 11.22 16.81 21.18 22.98 26.56 28.30 35.03 1997-01-19 20.05 10.92 16.75 21.02 23.02 26.26 28.91 33.28 1997-01-20 20.30 11.32 16.45 20.90 22.96 26.00 28.55 30.42 1997-01-21 20.45 11.41 17.47 20.84 22.85 25.80 28.48 30.51 1997-01-22 20.59 11.43 17.43 20.74 22.90 25.34 28.59 30.92 1997-01-23 20.50 11.67 16.90 21.09 22.67 25.31 28.80 31.77 1997-01-24 20.21 11.62 16.10 20.20 22.13 25.69 28.58 32.27 1997-01-25 19.82 10.44 15.93 20.78 22.34 26.03 28.73 32.19 1997-01-26 19.63 9.19 13.66 20.32 22.12 25.84 27.91 31.15 1997-01-27 19.79 7.65 15.29 20.06 22.33 25.21 27.93 36.03 1997-01-28 19.90 7.31 12.72 18.54 22.07 23.62 27.83 35.07 1997-01-29 20.54 6.03 12.68 19.00 22.20 23.42 27.69 35.12 1997-01-30 21.91 5.82 12.06 19.06 22.18 23.73 27.52 35.00 1997-01-31 23.23 5.06 12.02 19.13 22.44 23.53 27.83 35.61 1997-02-01 23.48 4.77 12.35 19.13 22.36 23.54 27.75 35.10 1997-02-02 24.09 4.83 12.68 19.57 22.25 24.10 27.15 33.47 1997-02-03 24.16 4.89 12.59 19.11 21.77 23.50 26.60 33.32 1997-02-04 23.80 4.86 12.37 18.73 21.17 23.68 26.78 33.35 1997-02-05 23.21 4.84 12.24 18.44 21.13 23.24 26.56 33.16 1997-02-06 23.35 4.85 11.99 17.80 20.50 23.30 26.09 31.65 1997-02-07 23.65 4.77 11.58 17.70 20.76 23.05 25.74 31.82 1997-02-08 23.95 4.63 10.57 18.14 21.33 23.07 26.11 31.72 1997-02-09 24.22 4.63 10.05 17.88 21.42 22.80 25.76 31.98 1997-02-10 24.61 4.59 9.81 17.49 20.67 22.54 25.40 31.97 1997-02-11 24.92 4.57 9.95 16.94 20.54 22.39 25.32 32.40 1997-02-12 24.51 4.58 9.31 17.03 20.18 22.21 25.18 32.99 1997-02-13 24.28 5.19 14.21 17.64 20.16 22.43 25.41 34.18 1997-02-14 23.80 4.87 13.82 17.70 20.07 22.19 25.80 38.36 1997-02-15 23.30 4.96 13.71 17.85 20.13 22.55 25.98 39.30 1997-02-16 23.31 7.23 14.17 18.50 20.12 23.19 26.20 38.47 1997-02-17 23.40 5.00 13.09 17.66 19.65 21.27 26.37 39.34 1997-02-18 23.46 4.97 12.52 16.87 19.67 21.76 26.29 38.60 1997-02-19 23.63 5.11 11.58 16.88 19.57 21.33 26.13 38.83 1997-02-20 23.99 5.31 9.39 16.67 19.31 21.25 26.11 37.59 1997-02-21 23.58 3.50 9.61 16.66 18.69 21.27 26.37 37.61 1997-02-22 23.57 3.59 9.26 17.15 18.65 21.83 26.04 36.39 1997-02-23 23.84 3.69 9.62 16.43 18.75 22.09 25.83 36.55 1997-02-24 23.95 3.77 10.24 16.23 18.52 22.34 26.07 35.40 1997-02-25 23.90 3.83 10.75 16.12 18.26 21.05 26.18 32.20 1997-02-26 23.98 3.81 10.10 16.07 17.84 20.88 25.87 30.43 1997-02-27 24.22 3.82 8.43 15.88 17.69 20.88 25.60 28.95 1997-02-28 23.81 3.85 8.42 15.77 17.72 20.90 25.49 28.90 1997-03-01 23.48 3.94 7.85 14.98 17.88 20.77 24.19 28.94 1997-03-02 23.19 3.98 7.93 14.29 17.81 20.14 24.24 28.81 1997-03-03 23.27 4.03 7.09 14.43 17.63 20.08 23.83 28.77 1997-03-04 23.21 4.11 8.26 14.39 17.42 20.03 23.32 28.32 1997-03-05 23.38 4.12 7.65 14.25 17.31 19.91 23.66 27.95 1997-03-06 23.81 4.14 7.71 13.86 16.83 19.70 23.84 27.63 1997-03-07 24.25 4.16 7.60 13.74 16.46 19.59 23.88 27.44 1997-03-08 24.58 4.28 7.11 13.29 16.16 18.89 23.26 27.32 1997-03-09 24.47 4.30 6.94 12.87 16.05 18.62 22.96 27.27 1997-03-10 24.30 4.34 7.12 12.78 15.87 18.13 22.56 27.30 1997-03-11 23.95 4.38 7.27 12.72 15.59 18.01 21.71 27.92 1997-03-12 23.47 1.86 6.44 12.37 15.30 17.59 20.94 27.31 1997-03-13 22.85 4.41 8.16 12.93 15.50 17.62 21.37 26.92 1997-03-14 22.50 4.42 8.22 12.75 15.87 17.52 21.11 26.46 1997-03-15 22.51 4.44 7.78 12.76 15.97 17.49 20.57 25.84 1997-03-16 22.38 2.35 5.88 12.70 15.64 17.51 19.93 24.64 1997-03-17 22.30 4.02 7.40 12.80 15.58 16.90 19.55 24.18 1997-03-18 22.40 4.16 7.45 12.84 15.23 16.97 19.43 23.60 1997-03-19 22.49 4.34 6.86 12.50 14.71 16.77 19.21 22.82 1997-03-20 22.42 4.49 7.28 12.44 15.06 16.56 19.17 22.42 1997-03-21 22.40 4.50 7.14 12.17 14.19 16.21 18.05 22.40 1997-03-22 22.40 4.54 6.96 12.05 13.32 16.14 17.68 22.40 1997-03-23 22.28 4.67 6.89 11.16 12.18 15.56 16.59 22.28 1997-03-24 22.11 4.76 7.27 10.88 12.12 14.24 16.17 22.11 1997-03-25 22.07 4.78 6.94 10.38 11.83 13.89 16.42 22.07 1997-03-26 22.02 4.81 6.46 10.10 12.08 13.15 16.46 22.02 1997-03-27 22.06 4.80 6.74 9.97 12.19 13.37 16.60 22.06 1997-03-28 22.14 4.73 6.16 9.90 12.31 13.68 17.36 26.49 1997-03-29 22.38 4.67 5.86 9.62 12.22 13.56 17.34 22.38 1997-03-30 22.71 4.70 6.09 9.64 12.26 14.23 18.05 22.71 1997-03-31 22.78 4.78 6.43 10.08 12.54 14.19 17.31 22.78 1997-04-01 23.33 4.87 6.33 9.60 12.64 15.33 17.29 23.33 1997-04-02 23.89 4.94 6.31 8.91 12.71 14.51 16.27 23.89 1997-04-03 24.29 4.95 6.31 8.54 12.72 13.93 16.36 24.29 1997-04-04 24.55 4.95 6.29 8.89 12.48 13.88 16.29 24.55 1997-04-05 24.53 4.94 6.51 9.03 12.37 13.86 16.40 24.53 1997-04-06 24.56 1.87 5.97 8.51 11.81 13.88 16.31 24.56 1997-04-07 24.55 5.02 7.07 9.48 11.64 14.13 16.16 24.55 1997-04-08 24.30 5.13 7.08 9.40 11.79 14.04 15.90 24.30 1997-04-09 24.29 5.20 7.18 9.14 12.74 14.15 16.14 24.29 1997-04-10 24.86 2.12 6.45 8.77 12.33 14.44 16.09 24.86 1997-04-11 24.73 2.12 6.16 9.71 12.25 14.59 18.52 24.73 1997-04-12 24.62 2.12 6.00 8.42 12.17 14.16 16.08 24.62 1997-04-13 24.54 2.14 5.87 8.26 12.26 14.10 16.07 24.54 1997-04-14 23.92 2.18 5.60 9.99 12.78 15.51 16.31 23.92 1997-04-15 23.39 5.15 6.05 11.93 13.61 15.64 16.40 23.39 1997-04-16 22.97 5.14 5.94 10.06 12.10 15.53 16.01 22.97 1997-04-17 22.01 5.23 5.75 9.02 11.53 14.24 16.16 22.01 1997-04-18 21.07 5.35 5.85 7.99 12.11 14.17 16.77 21.07 1997-04-19 20.50 5.42 5.46 6.25 8.27 13.46 16.69 20.50 1997-04-20 19.92 5.34 5.38 6.29 7.03 13.12 17.15 19.92 1997-04-21 19.45 5.33 5.34 6.71 8.06 11.63 15.81 19.45 1997-04-22 19.58 5.29 5.32 6.65 7.48 11.72 15.97 19.58 1997-04-23 19.87 5.29 5.31 5.90 7.25 11.62 16.07 19.87 1997-04-24 20.05 5.21 5.25 5.65 7.36 10.17 16.09 20.05 1997-04-25 20.03 5.27 5.67 6.83 9.64 13.44 17.61 20.03 1997-04-26 19.85 5.48 6.38 8.53 11.74 14.47 17.97 19.85 1997-04-27 19.79 5.73 6.38 7.67 9.19 11.42 17.00 19.79 1997-04-28 19.87 6.23 7.60 10.32 13.05 15.78 18.50 19.87 1997-04-29 19.96 4.13 4.87 6.36 7.52 9.59 16.50 19.96 1997-04-30 20.11 6.93 6.96 7.02 7.09 12.29 17.50 20.11