Name: NH Vortex Area Units: million km!U2!N Level: 460 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 1997-10-01 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-02 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-03 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-04 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-05 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-06 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-07 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-08 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-09 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-10 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-11 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-12 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-13 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-14 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-15 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-16 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-17 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-18 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-19 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-20 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-21 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-22 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-23 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-24 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-25 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-26 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-27 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-28 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-29 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-30 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-10-31 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-01 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-02 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-03 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-04 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-05 -9999.0 16.11 17.01 18.80 20.59 23.17 25.75 27.04 1997-11-06 -9999.0 8.53 10.73 15.13 17.82 20.51 24.86 27.04 1997-11-07 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1997-11-08 -9999.0 14.21 15.04 16.70 18.35 18.60 18.84 18.96 1997-11-09 -9999.0 11.08 12.11 14.65 18.62 19.17 22.67 24.91 1997-11-10 -9999.0 11.15 12.23 14.77 18.45 19.67 22.93 24.91 1997-11-11 -9999.0 11.22 13.49 18.02 19.92 21.45 23.75 24.91 1997-11-12 -9999.0 11.34 13.23 16.13 18.88 19.67 22.26 22.31 1997-11-13 -9999.0 11.35 13.16 16.38 18.03 20.13 24.62 27.26 1997-11-14 -9999.0 3.62 8.10 11.34 14.98 17.34 23.37 26.83 1997-11-15 24.96 9.59 10.69 12.26 15.32 19.53 25.71 26.83 1997-11-16 -9999.0 9.92 11.23 13.23 14.74 17.04 22.03 26.43 1997-11-17 -9999.0 9.92 11.34 12.24 14.07 17.03 26.64 27.19 1997-11-18 -9999.0 10.94 11.96 13.67 15.98 18.56 26.54 26.97 1997-11-19 25.65 5.44 11.31 14.44 18.12 22.75 26.08 27.37 1997-11-20 25.52 11.17 11.43 13.22 17.12 21.70 25.57 26.98 1997-11-21 25.41 10.13 11.40 13.63 16.08 21.58 25.28 26.58 1997-11-22 23.53 10.75 11.09 13.85 15.60 20.97 23.03 27.17 1997-11-23 22.45 11.43 11.91 15.54 20.20 21.40 22.39 27.65 1997-11-24 21.32 4.61 10.67 13.04 16.21 20.69 23.46 28.21 1997-11-25 21.18 8.59 12.64 15.30 16.85 20.83 24.75 29.09 1997-11-26 20.77 8.55 9.68 14.55 17.86 20.95 27.90 34.69 1997-11-27 22.80 8.55 11.67 14.35 17.84 21.75 28.32 34.17 1997-11-28 23.92 8.15 9.53 14.57 17.35 20.45 28.03 33.88 1997-11-29 25.13 8.18 9.25 15.89 19.60 23.51 27.89 33.89 1997-11-30 25.80 8.19 10.36 15.57 18.87 22.36 27.61 33.62 1997-12-01 26.67 8.23 12.05 15.80 21.23 24.96 28.08 33.70 1997-12-02 25.96 8.50 11.70 16.09 21.68 24.91 26.88 34.21 1997-12-03 24.04 8.46 11.89 17.10 22.23 24.49 28.48 38.38 1997-12-04 23.34 8.38 12.20 15.92 21.35 24.55 28.72 35.16 1997-12-05 21.53 8.24 13.83 18.11 21.49 24.99 30.54 35.34 1997-12-06 -9999.0 8.28 13.60 17.17 20.64 25.17 30.65 34.95 1997-12-07 16.65 8.30 12.18 18.46 20.63 24.69 30.79 34.59 1997-12-08 17.66 8.36 12.16 18.69 21.45 24.54 29.73 33.87 1997-12-09 17.34 11.70 14.58 19.35 22.79 24.64 29.47 33.43 1997-12-10 16.69 12.00 15.52 20.62 23.46 24.89 30.07 30.67 1997-12-11 17.49 14.16 15.02 20.59 22.79 24.75 29.31 30.51 1997-12-12 18.14 7.21 14.90 19.22 22.94 25.16 28.68 31.12 1997-12-13 17.90 7.33 16.05 18.71 23.62 26.52 28.28 31.19 1997-12-14 18.65 7.37 14.84 21.00 23.26 26.52 28.23 32.00 1997-12-15 19.26 7.52 17.16 21.59 25.09 26.93 29.43 33.67 1997-12-16 19.75 7.59 15.62 20.53 24.54 27.06 29.80 35.27 1997-12-17 20.01 12.44 18.60 20.91 24.84 27.09 29.81 36.53 1997-12-18 20.19 12.62 19.00 21.50 25.46 27.28 29.43 37.32 1997-12-19 20.18 8.37 16.24 22.00 24.90 27.17 28.90 38.14 1997-12-20 19.34 5.47 13.12 21.99 23.59 26.71 28.04 37.78 1997-12-21 18.29 5.47 13.54 20.42 22.54 25.82 27.90 35.22 1997-12-22 17.53 11.26 15.11 20.64 23.71 26.13 27.65 32.67 1997-12-23 17.16 13.38 16.25 20.53 22.87 25.88 27.78 30.15 1997-12-24 17.36 13.54 15.32 20.89 22.71 25.58 27.79 29.03 1997-12-25 17.73 13.70 16.14 21.72 23.79 26.10 28.38 31.69 1997-12-26 19.47 13.66 16.21 21.82 24.25 26.13 29.02 31.54 1997-12-27 20.90 14.20 16.07 22.23 23.95 26.85 29.53 32.09 1997-12-28 22.34 15.82 17.22 22.06 23.88 26.35 29.54 32.52 1997-12-29 22.92 16.13 17.21 22.92 24.13 27.03 29.67 30.06 1997-12-30 23.77 15.54 17.35 23.30 24.68 27.44 28.44 29.92 1997-12-31 23.16 12.10 17.07 23.04 24.93 26.12 28.82 29.98 1998-01-01 22.93 8.46 16.37 22.57 24.76 26.64 29.06 30.34 1998-01-02 22.56 8.15 15.27 21.52 24.73 26.73 29.26 30.04 1998-01-03 22.30 7.77 14.99 20.04 23.97 26.15 29.13 32.12 1998-01-04 22.56 7.41 15.13 19.84 23.87 25.51 29.20 34.76 1998-01-05 22.94 7.16 15.21 20.75 23.48 25.86 29.08 32.52 1998-01-06 23.01 7.09 15.23 21.60 22.97 25.84 29.21 30.89 1998-01-07 -9999.0 9.69 16.36 20.84 23.39 25.95 29.18 29.60 1998-01-08 -9999.0 9.91 16.87 20.91 23.60 25.03 28.94 29.39 1998-01-09 -9999.0 10.18 17.99 20.89 23.56 25.44 28.91 29.49 1998-01-10 16.28 10.33 16.83 21.32 23.74 25.23 28.55 29.46 1998-01-11 -9999.0 10.46 17.23 22.13 23.85 25.55 27.46 29.52 1998-01-12 -9999.0 10.55 17.16 22.30 23.43 25.19 28.66 29.60 1998-01-13 -9999.0 10.71 17.50 22.36 23.59 25.59 28.78 30.10 1998-01-14 -9999.0 10.74 16.55 20.98 23.40 25.39 29.40 31.35 1998-01-15 19.67 10.85 17.30 21.21 22.44 25.39 29.75 31.57 1998-01-16 19.84 10.99 16.33 21.48 22.47 24.92 29.36 32.08 1998-01-17 19.86 10.95 15.91 20.72 22.61 26.31 28.55 31.96 1998-01-18 20.63 10.50 15.51 20.52 22.68 26.06 28.55 31.97 1998-01-19 20.42 10.20 15.57 20.67 22.86 25.33 28.38 35.25 1998-01-20 20.04 9.95 15.58 20.86 22.47 25.06 28.37 35.03 1998-01-21 19.71 9.58 16.42 21.54 22.76 25.78 29.19 34.62 1998-01-22 19.88 10.40 17.26 21.59 22.69 26.03 29.01 34.71 1998-01-23 19.71 11.86 18.12 21.41 23.09 25.89 29.01 37.87 1998-01-24 19.84 13.29 18.60 20.91 23.23 25.20 28.33 37.74 1998-01-25 -9999.0 13.29 17.67 21.54 23.30 25.39 28.24 38.06 1998-01-26 20.69 7.31 14.60 20.56 22.53 24.50 28.20 35.32 1998-01-27 20.04 12.29 15.85 19.60 22.90 24.44 27.79 34.86 1998-01-28 19.63 10.90 16.01 19.73 23.09 24.89 27.01 34.73 1998-01-29 18.79 10.88 15.97 19.82 21.71 24.87 27.15 34.30 1998-01-30 17.48 12.24 14.42 19.61 21.80 24.72 26.99 34.01 1998-01-31 15.98 5.72 14.68 18.97 21.82 24.58 26.85 36.79 1998-02-01 14.97 5.72 14.60 19.14 22.33 24.85 28.20 36.85 1998-02-02 13.82 5.50 15.45 19.52 22.93 24.95 29.84 36.48 1998-02-03 13.00 11.82 14.79 19.92 21.63 25.39 29.92 36.80 1998-02-04 12.67 4.60 12.67 19.22 22.39 25.64 27.82 37.08 1998-02-05 12.85 4.97 13.15 18.36 21.04 24.85 28.55 37.00 1998-02-06 13.06 10.42 14.29 19.25 20.88 24.19 30.50 37.21 1998-02-07 13.44 10.28 15.31 18.96 20.52 23.50 30.60 37.17 1998-02-08 13.77 9.36 13.85 19.48 20.59 23.32 30.63 36.76 1998-02-09 14.03 4.78 13.89 19.21 21.12 23.15 29.19 35.75 1998-02-10 14.13 8.34 14.13 18.49 20.74 24.14 29.54 35.32 1998-02-11 14.03 8.81 15.95 19.43 21.45 25.51 29.22 34.79 1998-02-12 14.04 8.55 13.80 19.06 21.04 24.75 29.37 33.97 1998-02-13 13.94 8.88 13.73 18.82 21.48 23.81 27.94 34.92 1998-02-14 13.77 8.67 13.17 18.42 21.97 23.88 28.79 34.37 1998-02-15 13.65 8.78 13.30 18.08 21.70 23.87 30.68 33.91 1998-02-16 13.50 2.05 11.96 17.70 21.26 23.85 29.57 33.99 1998-02-17 13.23 8.59 13.08 17.65 21.16 23.64 28.48 37.20 1998-02-18 13.06 8.02 11.99 17.79 20.40 23.36 28.14 35.03 1998-02-19 13.00 7.98 11.65 17.41 19.93 23.10 28.30 34.27 1998-02-20 12.82 7.55 11.58 16.77 19.27 22.97 28.24 34.78 1998-02-21 12.74 6.98 11.08 16.91 19.98 22.81 27.99 35.52 1998-02-22 12.72 6.82 12.09 17.55 20.03 22.84 28.64 35.09 1998-02-23 13.04 7.03 10.10 16.90 19.78 23.67 28.53 36.69 1998-02-24 13.51 7.17 12.43 17.16 19.72 24.18 27.50 36.88 1998-02-25 13.50 7.64 12.01 16.83 19.81 24.30 26.46 36.44 1998-02-26 14.11 7.90 12.24 16.27 19.92 24.04 26.70 34.84 1998-02-27 13.74 8.33 9.98 15.84 20.08 23.41 27.35 35.29 1998-02-28 13.15 8.51 10.19 14.87 20.03 22.76 27.43 33.13 1998-03-01 12.39 8.40 9.81 14.89 19.21 22.37 27.47 31.98 1998-03-02 12.21 8.14 9.70 14.54 18.50 22.13 25.09 31.70 1998-03-03 11.54 7.81 12.39 15.49 18.73 21.86 25.05 29.84 1998-03-04 11.77 7.58 12.57 15.77 18.80 22.55 25.63 30.83 1998-03-05 11.84 7.41 12.42 15.89 18.41 21.70 24.92 30.88 1998-03-06 12.05 7.27 12.24 15.06 19.23 22.33 24.99 29.86 1998-03-07 12.19 7.15 10.73 14.33 18.99 21.79 24.12 30.40 1998-03-08 12.14 8.22 11.28 14.83 18.50 20.40 24.39 31.03 1998-03-09 12.18 8.34 11.19 14.67 18.66 21.26 24.23 30.39 1998-03-10 12.45 8.54 10.77 14.01 19.30 21.16 23.99 29.53 1998-03-11 12.55 8.48 12.30 13.70 19.68 21.36 24.14 28.85 1998-03-12 12.59 8.52 11.87 14.50 18.55 21.19 23.82 27.98 1998-03-13 12.74 8.53 10.89 13.94 18.31 21.76 23.91 26.83 1998-03-14 12.84 8.55 9.62 13.73 18.11 21.59 23.93 26.29 1998-03-15 12.75 8.53 10.28 13.46 17.56 20.92 24.23 26.06 1998-03-16 12.93 2.98 9.78 13.27 18.65 20.78 24.52 26.43 1998-03-17 13.10 8.84 10.67 13.09 18.11 20.70 24.80 26.98 1998-03-18 13.18 9.01 9.56 12.85 17.06 20.47 24.06 27.00 1998-03-19 13.36 3.06 9.01 12.90 14.83 20.40 23.83 25.99 1998-03-20 -9999.0 8.14 10.93 12.86 15.95 20.50 23.29 25.48 1998-03-21 -9999.0 3.06 8.22 12.19 15.13 20.39 21.92 25.87 1998-03-22 18.86 6.39 8.58 13.35 14.92 19.77 21.23 26.03 1998-03-23 18.98 6.39 8.60 13.62 15.29 19.10 20.14 26.05 1998-03-24 19.02 4.15 6.58 13.65 15.44 18.84 19.93 26.13 1998-03-25 19.09 4.24 9.09 12.76 15.37 17.93 19.40 25.96 1998-03-26 15.74 4.31 5.80 11.81 14.19 15.65 18.75 25.82 1998-03-27 -9999.0 4.47 5.82 10.87 14.24 16.42 19.07 25.97 1998-03-28 10.86 4.54 5.61 11.36 14.46 16.95 18.94 26.31 1998-03-29 8.60 4.51 5.64 9.75 14.24 16.17 20.16 26.52 1998-03-30 9.20 4.50 5.81 9.80 14.11 14.53 18.68 26.58 1998-03-31 9.46 4.46 6.51 10.08 13.84 16.11 18.73 26.73 1998-04-01 9.02 4.45 6.54 10.23 13.95 16.61 17.83 26.89 1998-04-02 8.59 4.42 6.70 10.23 13.80 16.12 17.86 27.03 1998-04-03 7.97 4.44 8.12 11.35 13.46 14.77 17.90 26.72 1998-04-04 7.07 3.40 6.03 8.65 12.78 14.77 18.24 26.67 1998-04-05 7.11 3.40 4.30 8.42 12.53 14.13 18.30 26.38 1998-04-06 -9999.0 1.88 4.02 8.79 12.50 14.29 18.29 26.26 1998-04-07 -9999.0 4.50 5.68 11.07 12.77 14.30 17.05 25.81 1998-04-08 4.76 4.51 6.16 11.31 12.48 15.89 18.48 26.00 1998-04-09 -9999.0 4.42 8.76 11.71 13.25 16.19 19.10 25.63 1998-04-10 -9999.0 4.45 8.76 11.18 12.08 15.23 16.64 25.63 1998-04-11 -9999.0 4.48 8.85 10.94 11.69 14.78 16.63 25.18 1998-04-12 -9999.0 4.27 9.04 10.94 11.80 14.25 16.50 23.97 1998-04-13 -9999.0 3.37 9.32 11.00 12.00 13.72 16.54 22.86 1998-04-14 -9999.0 10.43 10.96 11.55 12.63 14.17 17.64 22.09 1998-04-15 -9999.0 10.12 10.76 11.39 12.23 13.52 17.57 21.21 1998-04-16 -9999.0 11.15 11.60 12.28 12.73 15.06 17.88 20.34 1998-04-17 -9999.0 6.21 7.25 10.44 12.14 13.22 17.14 20.41 1998-04-18 -9999.0 6.21 9.09 12.44 12.86 14.81 17.72 20.37 1998-04-19 -9999.0 6.21 8.59 11.97 13.58 15.09 18.14 20.28 1998-04-20 -9999.0 10.97 11.77 13.37 14.86 16.49 18.95 20.19 1998-04-21 -9999.0 5.24 6.98 10.47 13.45 16.26 18.67 19.88 1998-04-22 -9999.0 5.24 7.01 10.55 13.37 16.03 18.62 19.92 1998-04-23 -9999.0 9.74 10.17 11.03 13.29 15.86 18.59 19.96 1998-04-24 -9999.0 9.74 10.84 13.03 15.22 17.11 18.99 19.93 1998-04-25 -9999.0 14.82 15.32 16.33 17.34 18.35 19.35 19.86 1998-04-26 -9999.0 9.32 10.40 12.56 14.72 16.88 19.04 20.12 1998-04-27 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1998-04-28 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1998-04-29 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00 1998-04-30 -9999.0 -9999.00-9999.00-9999.00-9999.00-9999.00-9999.00-9999.00