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 1999-10-01 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-02 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-03 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-04 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-05 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-06 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-07 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-08 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-09 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-10 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1999-10-11 -9999.0 5.95 7.07 9.32 11.58 15.70 19.82 21.89 1999-10-12 -9999.0 6.26 7.73 10.68 13.63 16.58 19.53 21.01 1999-10-13 -9999.0 6.58 7.57 9.54 11.51 13.95 16.40 17.62 1999-10-14 -9999.0 7.08 7.92 9.62 11.31 14.63 17.94 19.60 1999-10-15 -9999.0 8.89 9.92 11.29 15.67 21.75 32.55 41.32 1999-10-16 16.94 11.05 11.85 16.03 16.98 18.06 21.51 24.21 1999-10-17 -9999.0 10.60 11.42 12.60 13.48 17.11 20.16 24.17 1999-10-18 17.49 9.89 11.68 14.81 16.75 18.17 24.48 26.55 1999-10-19 17.80 10.06 10.93 14.56 17.48 18.20 24.69 27.62 1999-10-20 17.68 10.14 11.80 15.67 17.73 19.30 24.33 29.53 1999-10-21 17.51 10.19 11.86 14.97 17.45 19.05 24.55 27.09 1999-10-22 17.01 10.39 11.81 13.64 16.65 18.82 25.14 25.85 1999-10-23 16.57 10.46 11.78 14.63 17.26 19.19 25.67 30.89 1999-10-24 16.76 10.51 12.00 15.80 18.51 19.61 25.33 30.34 1999-10-25 17.26 10.32 12.35 15.94 17.82 19.96 25.26 29.81 1999-10-26 18.36 5.52 12.57 16.29 17.88 19.52 24.51 29.83 1999-10-27 19.35 5.21 12.61 16.31 17.59 18.98 24.80 29.41 1999-10-28 20.80 5.02 13.34 16.48 17.71 19.39 24.41 29.43 1999-10-29 20.97 9.49 12.82 16.94 17.73 18.51 24.07 29.72 1999-10-30 21.25 9.44 12.07 16.06 17.42 19.00 23.64 28.88 1999-10-31 19.62 9.72 11.65 16.12 17.50 19.56 23.74 28.80 1999-11-01 18.18 10.02 11.52 15.50 17.62 19.13 23.21 28.93 1999-11-02 16.60 10.19 11.09 15.89 16.60 18.80 23.50 29.14 1999-11-03 15.92 10.19 11.80 14.59 16.97 18.19 26.45 28.91 1999-11-04 14.75 10.33 12.64 14.73 16.64 18.44 25.95 29.25 1999-11-05 15.02 10.23 12.61 15.05 16.62 19.00 26.38 27.72 1999-11-06 15.59 9.62 14.00 15.59 16.98 18.95 25.36 27.13 1999-11-07 15.82 8.98 14.22 16.12 17.76 20.12 25.31 26.35 1999-11-08 15.84 8.67 13.03 15.90 17.40 20.10 24.31 26.19 1999-11-09 16.05 9.20 13.65 16.55 17.69 20.04 23.47 25.29 1999-11-10 16.23 9.62 14.25 16.15 17.82 20.52 23.65 25.68 1999-11-11 16.19 9.84 14.13 16.84 19.45 20.50 23.50 26.04 1999-11-12 16.16 9.84 13.56 16.94 19.20 21.04 22.95 25.95 1999-11-13 16.12 9.77 13.24 16.70 19.59 20.62 24.54 26.48 1999-11-14 16.25 9.65 13.52 16.50 18.99 20.61 25.90 29.21 1999-11-15 16.48 9.46 13.64 16.75 18.94 21.17 25.98 29.29 1999-11-16 16.74 9.95 13.98 16.61 18.44 20.62 25.82 28.56 1999-11-17 17.18 9.80 14.23 16.78 18.45 20.62 25.62 27.87 1999-11-18 17.62 9.77 13.75 16.35 18.52 21.17 25.26 27.46 1999-11-19 17.94 9.80 13.62 16.37 18.34 21.51 24.65 26.97 1999-11-20 18.02 9.93 14.27 16.25 18.13 21.81 24.70 29.81 1999-11-21 18.24 9.74 14.33 16.12 18.58 22.42 26.35 29.67 1999-11-22 18.56 10.15 14.36 16.43 19.94 22.79 26.41 29.70 1999-11-23 18.09 10.42 14.32 16.17 20.00 22.40 26.37 29.86 1999-11-24 17.66 10.54 14.09 16.00 19.81 22.55 25.52 29.70 1999-11-25 17.38 10.80 14.54 15.77 19.97 22.68 25.45 29.59 1999-11-26 17.42 10.91 14.29 16.02 19.96 22.54 25.64 29.15 1999-11-27 16.86 8.39 14.29 16.15 19.97 21.50 26.04 28.85 1999-11-28 17.29 8.34 14.02 15.99 20.23 22.86 26.12 28.54 1999-11-29 18.05 8.32 14.23 15.63 19.72 23.57 26.66 28.17 1999-11-30 18.57 8.25 14.86 16.10 20.04 23.54 27.46 28.15 1999-12-01 18.49 8.21 14.82 16.48 20.04 23.74 27.83 30.12 1999-12-02 18.63 10.11 14.33 16.47 19.43 23.19 28.21 30.38 1999-12-03 18.53 11.74 14.33 16.38 19.56 22.71 27.83 29.74 1999-12-04 18.14 13.04 14.52 16.58 19.30 22.49 27.84 32.11 1999-12-05 17.96 13.55 14.47 17.45 20.16 22.22 26.39 31.13 1999-12-06 17.98 13.93 14.70 17.74 19.63 22.80 25.18 30.47 1999-12-07 18.03 13.87 14.62 18.27 21.05 22.65 25.21 29.81 1999-12-08 17.86 13.91 15.01 19.29 21.63 23.36 26.37 29.90 1999-12-09 17.66 13.37 15.19 20.19 21.67 22.80 27.39 30.62 1999-12-10 17.53 12.83 14.92 19.66 21.77 22.57 27.02 31.18 1999-12-11 17.40 12.34 15.43 18.85 21.47 22.90 27.60 32.02 1999-12-12 17.26 10.58 16.38 19.14 21.01 22.74 26.85 31.23 1999-12-13 17.17 8.82 15.87 18.97 20.78 22.78 26.18 30.01 1999-12-14 17.09 7.30 15.91 19.27 20.98 22.89 25.51 30.27 1999-12-15 16.93 6.75 16.96 19.04 21.40 22.52 26.61 29.61 1999-12-16 16.64 6.34 16.82 20.23 21.47 22.47 26.21 30.44 1999-12-17 16.56 6.44 16.66 20.06 22.09 22.63 28.40 33.02 1999-12-18 16.73 6.46 17.61 20.78 22.01 23.97 28.84 33.06 1999-12-19 19.95 6.44 18.24 21.31 22.30 25.00 29.19 33.48 1999-12-20 23.08 6.44 18.14 21.05 23.02 25.35 30.10 33.48 1999-12-21 26.33 6.43 18.38 21.04 22.58 25.68 31.83 33.29 1999-12-22 29.36 7.16 18.77 20.97 22.54 26.17 31.81 34.57 1999-12-23 32.28 6.73 18.55 21.11 22.75 26.36 32.23 35.40 1999-12-24 32.20 6.60 17.36 20.95 22.77 27.18 32.11 36.58 1999-12-25 32.05 6.75 17.73 20.95 22.90 26.99 31.97 35.75 1999-12-26 31.71 6.94 18.92 20.63 23.62 27.20 31.70 36.25 1999-12-27 31.74 7.21 19.14 20.89 23.99 26.61 31.76 34.24 1999-12-28 31.77 8.80 18.98 20.04 24.39 26.72 31.77 33.21 1999-12-29 31.41 10.36 18.79 20.72 24.20 26.98 31.52 33.46 1999-12-30 31.22 11.57 19.32 20.76 24.55 27.11 31.65 33.50 1999-12-31 31.29 12.72 18.95 20.57 24.28 26.76 31.32 32.90 2000-01-01 30.95 8.43 18.34 20.67 23.68 27.08 31.12 31.96 2000-01-02 30.60 13.43 18.49 21.02 24.38 27.05 31.29 33.81 2000-01-03 30.35 7.22 18.15 20.38 23.74 26.87 31.12 34.45 2000-01-04 30.07 6.46 18.02 20.25 22.87 26.57 30.90 34.10 2000-01-05 29.71 6.35 17.67 20.18 23.22 26.50 30.44 32.67 2000-01-06 29.61 5.79 17.47 19.76 23.19 26.41 29.90 32.31 2000-01-07 29.42 5.65 18.23 19.76 22.87 26.74 29.54 32.52 2000-01-08 29.34 5.60 18.30 19.80 22.97 26.59 29.27 31.67 2000-01-09 29.47 7.94 18.15 19.38 23.14 27.05 29.33 31.49 2000-01-10 29.26 10.23 18.14 19.92 23.40 26.60 28.80 34.08 2000-01-11 28.91 12.54 17.82 20.40 23.08 26.45 28.33 35.66 2000-01-12 28.79 12.69 17.17 20.53 23.23 26.62 28.24 35.20 2000-01-13 28.72 12.44 17.16 20.67 22.89 26.45 28.22 35.85 2000-01-14 28.31 12.40 17.14 20.63 22.81 27.10 28.70 37.21 2000-01-15 28.12 10.74 17.03 19.27 22.73 25.75 29.48 35.83 2000-01-16 28.29 9.16 16.60 19.62 22.85 25.83 29.25 35.58 2000-01-17 28.26 7.70 16.60 20.87 22.85 26.25 28.31 35.68 2000-01-18 28.08 11.22 16.81 21.18 22.98 26.56 28.30 35.03 2000-01-19 27.87 10.92 16.75 21.02 23.02 26.26 28.91 33.28 2000-01-20 27.75 11.32 16.45 20.90 22.96 26.00 28.55 30.42 2000-01-21 27.00 11.41 17.47 20.84 22.85 25.80 28.48 30.51 2000-01-22 26.71 11.43 17.43 20.74 22.90 25.34 28.59 30.92 2000-01-23 26.67 11.67 16.90 21.09 22.67 25.31 28.80 31.77 2000-01-24 26.83 11.62 16.10 20.20 22.13 25.69 28.58 32.27 2000-01-25 26.95 10.44 15.93 20.78 22.34 26.03 28.73 32.19 2000-01-26 27.15 9.19 13.66 20.32 22.12 25.84 27.91 31.15 2000-01-27 26.84 7.65 15.29 20.06 22.33 25.21 27.93 36.03 2000-01-28 26.56 7.31 12.72 18.54 22.07 23.62 27.83 35.07 2000-01-29 26.00 6.03 12.68 19.00 22.20 23.42 27.69 35.12 2000-01-30 25.57 5.82 12.06 19.06 22.18 23.73 27.52 35.00 2000-01-31 25.78 5.06 12.02 19.13 22.44 23.53 27.83 35.61 2000-02-01 26.12 4.77 12.35 19.13 22.36 23.54 27.75 35.10 2000-02-02 26.34 4.83 12.68 19.57 22.25 24.10 27.15 33.47 2000-02-03 26.60 4.89 12.59 19.11 21.77 23.50 26.60 33.32 2000-02-04 27.28 4.86 12.37 18.73 21.17 23.68 26.78 33.35 2000-02-05 27.30 4.84 12.24 18.44 21.13 23.24 26.56 33.16 2000-02-06 27.14 4.85 11.99 17.80 20.50 23.30 26.09 31.65 2000-02-07 26.68 4.77 11.58 17.70 20.76 23.05 25.74 31.82 2000-02-08 26.55 4.63 10.57 18.14 21.33 23.07 26.11 31.72 2000-02-09 25.83 4.63 10.05 17.88 21.42 22.80 25.76 31.98 2000-02-10 25.30 4.59 9.81 17.49 20.67 22.54 25.40 31.97 2000-02-11 24.93 4.57 9.95 16.94 20.54 22.39 25.32 32.40 2000-02-12 24.94 4.58 9.31 17.03 20.18 22.21 25.18 32.99 2000-02-13 24.90 5.19 14.21 17.64 20.16 22.43 25.41 34.18 2000-02-14 24.83 4.87 13.82 17.70 20.07 22.19 25.80 38.36 2000-02-15 24.94 4.96 13.71 17.85 20.13 22.55 25.98 39.30 2000-02-16 24.86 7.23 14.17 18.50 20.12 23.19 26.20 38.47 2000-02-17 24.78 5.00 13.09 17.66 19.65 21.27 26.37 39.34 2000-02-18 24.64 4.97 12.52 16.87 19.67 21.76 26.29 38.60 2000-02-19 24.46 5.11 11.58 16.88 19.57 21.33 26.13 38.83 2000-02-20 24.04 5.31 9.39 16.67 19.31 21.25 26.11 37.59 2000-02-21 23.83 3.50 9.61 16.66 18.69 21.27 26.37 37.61 2000-02-22 23.47 3.59 9.26 17.15 18.65 21.83 26.04 36.39 2000-02-23 23.17 3.69 9.62 16.43 18.75 22.09 25.83 36.55 2000-02-24 22.97 3.77 10.24 16.23 18.52 22.34 26.07 35.40 2000-02-25 22.97 3.83 10.75 16.12 18.26 21.05 26.18 32.20 2000-02-26 23.07 3.81 10.10 16.07 17.84 20.88 25.87 30.43 2000-02-27 23.21 3.82 8.43 15.88 17.69 20.88 25.60 28.95 2000-02-28 23.37 3.85 8.42 15.77 17.72 20.90 25.49 28.90 2000-02-29 23.78 8.13 12.81 16.71 21.87 24.12 25.47 25.58 2000-03-01 24.10 3.94 7.85 14.98 17.88 20.77 24.19 28.94 2000-03-02 24.29 3.98 7.93 14.29 17.81 20.14 24.24 28.81 2000-03-03 24.41 4.03 7.09 14.43 17.63 20.08 23.83 28.77 2000-03-04 24.37 4.11 8.26 14.39 17.42 20.03 23.32 28.32 2000-03-05 24.21 4.12 7.65 14.25 17.31 19.91 23.66 27.95 2000-03-06 24.11 4.14 7.71 13.86 16.83 19.70 23.84 27.63 2000-03-07 23.84 4.16 7.60 13.74 16.46 19.59 23.88 27.44 2000-03-08 23.67 4.28 7.11 13.29 16.16 18.89 23.26 27.32 2000-03-09 23.00 4.30 6.94 12.87 16.05 18.62 22.96 27.27 2000-03-10 22.34 4.34 7.12 12.78 15.87 18.13 22.56 27.30 2000-03-11 21.18 4.38 7.27 12.72 15.59 18.01 21.71 27.92 2000-03-12 20.18 1.86 6.44 12.37 15.30 17.59 20.94 27.31 2000-03-13 19.09 4.41 8.16 12.93 15.50 17.62 21.37 26.92 2000-03-14 18.63 4.42 8.22 12.75 15.87 17.52 21.11 26.46 2000-03-15 17.84 4.44 7.78 12.76 15.97 17.49 20.57 25.84 2000-03-16 17.62 2.35 5.88 12.70 15.64 17.51 19.93 24.64 2000-03-17 17.63 4.02 7.40 12.80 15.58 16.90 19.55 24.18 2000-03-18 17.66 4.16 7.45 12.84 15.23 16.97 19.43 23.60 2000-03-19 16.86 4.34 6.86 12.50 14.71 16.77 19.21 22.82 2000-03-20 16.28 4.49 7.28 12.44 15.06 16.56 19.17 22.42 2000-03-21 14.85 4.50 7.14 12.17 14.19 16.21 18.05 22.40 2000-03-22 13.28 4.54 6.96 12.05 13.32 16.14 17.68 22.40 2000-03-23 11.88 4.67 6.89 11.16 12.18 15.56 16.59 22.28 2000-03-24 11.35 4.76 7.27 10.88 12.12 14.24 16.17 22.11 2000-03-25 10.64 4.78 6.94 10.38 11.83 13.89 16.42 22.07 2000-03-26 10.36 4.81 6.46 10.10 12.08 13.15 16.46 22.02 2000-03-27 9.86 4.80 6.74 9.97 12.19 13.37 16.60 22.06 2000-03-28 9.23 4.73 6.16 9.90 12.31 13.68 17.36 26.49 2000-03-29 8.54 4.67 5.86 9.62 12.22 13.56 17.34 22.38 2000-03-30 8.02 4.70 6.09 9.64 12.26 14.23 18.05 22.71 2000-03-31 7.80 4.78 6.43 10.08 12.54 14.19 17.31 22.78 2000-04-01 7.78 4.87 6.33 9.60 12.64 15.33 17.29 23.33 2000-04-02 7.77 4.94 6.31 8.91 12.71 14.51 16.27 23.89 2000-04-03 7.86 4.95 6.31 8.54 12.72 13.93 16.36 24.29 2000-04-04 7.91 4.95 6.29 8.89 12.48 13.88 16.29 24.55 2000-04-05 8.03 4.94 6.51 9.03 12.37 13.86 16.40 24.53 2000-04-06 8.19 1.87 5.97 8.51 11.81 13.88 16.31 24.56 2000-04-07 8.42 5.02 7.07 9.48 11.64 14.13 16.16 24.55 2000-04-08 8.67 5.13 7.08 9.40 11.79 14.04 15.90 24.30 2000-04-09 8.82 5.20 7.18 9.14 12.74 14.15 16.14 24.29 2000-04-10 8.87 2.12 6.45 8.77 12.33 14.44 16.09 24.86 2000-04-11 -9999.0 2.12 6.16 9.71 12.25 14.59 18.52 24.73 2000-04-12 8.55 2.12 6.00 8.42 12.17 14.16 16.08 24.62 2000-04-13 8.27 2.14 5.87 8.26 12.26 14.10 16.07 24.54 2000-04-14 8.27 2.18 5.60 9.99 12.78 15.51 16.31 23.92 2000-04-15 -9999.0 5.15 6.05 11.93 13.61 15.64 16.40 23.39 2000-04-16 -9999.0 5.14 5.94 10.06 12.10 15.53 16.01 22.97 2000-04-17 -9999.0 5.23 5.75 9.02 11.53 14.24 16.16 22.01 2000-04-18 -9999.0 5.35 5.85 7.99 12.11 14.17 16.77 21.07 2000-04-19 -9999.0 5.42 5.46 6.25 8.27 13.46 16.69 20.50 2000-04-20 -9999.0 5.34 5.38 6.29 7.03 13.12 17.15 19.92 2000-04-21 -9999.0 5.33 5.34 6.71 8.06 11.63 15.81 19.45 2000-04-22 -9999.0 5.29 5.32 6.65 7.48 11.72 15.97 19.58 2000-04-23 5.34 5.29 5.31 5.90 7.25 11.62 16.07 19.87 2000-04-24 5.26 5.21 5.25 5.65 7.36 10.17 16.09 20.05 2000-04-25 5.27 5.27 5.67 6.83 9.64 13.44 17.61 20.03 2000-04-26 5.48 5.48 6.38 8.53 11.74 14.47 17.97 19.85 2000-04-27 5.73 5.73 6.38 7.67 9.19 11.42 17.00 19.79 2000-04-28 6.23 6.23 7.60 10.32 13.05 15.78 18.50 19.87 2000-04-29 6.60 4.13 4.87 6.36 7.52 9.59 16.50 19.96 2000-04-30 6.93 6.93 6.96 7.02 7.09 12.29 17.50 20.11