Name: NH Vortex Area Units: million km!U2!N Level: 460 K Source: MERRA2 (Data starting 2025-09-01 are from GEOS FP) Missing: -9999.0 Climatology: 1978/1979 to 2024/2025 Date Data Minimum 10% 30% Mean 70% 90% Maximum Fcst 2025-10-01 22.28 4.89 10.47 14.83 20.16 23.49 32.83 41.12 0 2025-10-02 12.83 7.03 10.10 16.11 19.59 22.41 28.83 35.59 0 2025-10-03 19.40 5.56 10.51 15.46 19.89 22.99 32.17 40.45 0 2025-10-04 24.25 6.15 10.89 16.36 20.73 23.74 32.59 38.38 0 2025-10-05 -9999.0 6.64 10.53 15.29 20.01 24.19 31.82 35.43 -1 2025-10-06 32.12 4.34 11.16 16.42 21.44 23.92 34.12 48.84 0 2025-10-07 31.44 3.69 10.73 15.85 21.73 25.74 31.63 41.94 0 2025-10-08 39.88 5.46 10.15 16.94 21.69 26.86 29.49 44.76 0 2025-10-09 38.03 5.92 11.64 16.24 21.04 25.49 30.15 42.48 0 2025-10-10 29.18 7.86 13.18 16.48 21.39 25.19 31.35 37.40 0 2025-10-11 17.54 8.21 11.16 16.79 20.91 23.94 32.86 35.91 0 2025-10-12 14.96 8.01 11.72 15.83 20.67 23.03 31.53 38.53 0 2025-10-13 7.53 6.74 11.44 14.31 19.88 23.91 29.81 36.82 0 2025-10-14 11.55 8.63 11.15 16.36 20.05 24.07 31.44 36.35 0 2025-10-15 22.26 7.27 10.38 15.87 19.91 22.68 30.53 40.91 0 2025-10-16 24.62 6.53 10.51 16.41 19.57 22.39 28.52 36.85 0 2025-10-17 31.61 7.20 9.96 15.38 19.75 23.37 30.16 44.48 0 2025-10-18 41.28 5.26 9.58 14.59 19.35 21.78 32.53 39.33 0 2025-10-19 42.45 5.57 9.73 14.91 19.62 23.19 32.77 40.07 0 2025-10-20 31.63 6.33 8.64 15.25 19.64 23.60 31.07 43.85 0 2025-10-21 -9999.0 6.15 8.83 15.09 19.47 22.66 30.22 43.42 -1 2025-10-22 37.00 5.25 9.97 15.97 19.68 23.00 29.81 41.39 0 2025-10-23 35.65 6.11 11.97 15.41 19.74 21.69 30.12 40.70 0 2025-10-24 25.01 7.72 11.56 15.70 19.46 21.97 28.25 36.93 0 2025-10-25 20.74 7.28 11.12 15.16 19.25 21.68 29.45 35.23 0 2025-10-26 28.62 7.66 11.21 15.38 19.17 22.90 29.06 32.72 0 2025-10-27 29.38 6.26 12.27 14.75 18.87 22.07 27.19 31.50 0 2025-10-28 28.54 6.22 12.70 14.76 18.45 21.63 27.56 30.17 6 2025-10-29 36.45 6.57 11.16 15.17 18.81 21.57 28.37 34.00 12 2025-10-30 37.87 7.01 9.68 14.99 18.55 21.23 27.28 39.89 36 2025-10-31 41.54 6.65 9.25 15.05 18.38 20.78 26.52 44.55 60 2025-11-01 39.90 5.92 9.50 15.18 18.27 21.58 25.65 43.85 84 2025-11-02 40.72 5.66 9.19 14.53 17.92 21.44 25.84 39.78 108 2025-11-03 39.00 4.76 9.10 14.03 17.33 20.72 25.26 30.38 132 2025-11-04 38.21 5.01 10.04 13.47 16.99 20.45 24.24 30.34 156 2025-11-05 33.12 4.65 10.61 13.98 16.77 19.53 23.74 28.66 180 2025-11-06 32.21 6.14 11.41 13.62 16.85 19.03 23.80 28.29 204 2025-11-07 32.15 7.45 11.17 14.52 17.08 19.01 24.13 32.58 228 2025-11-08 -9999.0 8.49 11.71 13.89 17.38 19.12 24.05 34.91 -1 2025-11-09 -9999.0 7.58 11.69 14.11 17.64 19.90 24.26 33.50 -1 2025-11-10 -9999.0 6.15 11.20 14.63 17.89 20.46 25.41 29.33 -1 2025-11-11 -9999.0 7.77 11.47 14.22 18.13 21.58 25.54 29.52 -1 2025-11-12 -9999.0 5.47 11.34 14.32 18.12 21.13 26.07 31.36 -1 2025-11-13 -9999.0 7.24 11.24 14.81 18.22 21.15 25.53 30.75 -1 2025-11-14 -9999.0 8.35 11.49 15.09 18.42 21.86 24.81 30.20 -1 2025-11-15 -9999.0 7.91 11.36 15.31 18.48 21.70 24.86 30.12 -1 2025-11-16 -9999.0 7.76 11.39 14.89 18.46 22.19 24.72 29.45 -1 2025-11-17 -9999.0 6.90 11.34 15.19 18.68 22.49 25.12 32.79 -1 2025-11-18 -9999.0 4.81 11.53 14.92 18.90 22.86 26.62 35.66 -1 2025-11-19 -9999.0 4.78 11.11 14.41 18.98 22.89 26.34 35.25 -1 2025-11-20 -9999.0 4.71 11.38 14.78 19.12 23.55 26.21 36.36 -1 2025-11-21 -9999.0 4.67 11.48 15.12 19.37 23.79 27.69 36.69 -1 2025-11-22 -9999.0 5.07 11.79 14.49 19.72 23.44 29.12 36.24 -1 2025-11-23 -9999.0 5.32 12.00 15.48 19.72 23.28 29.11 34.03 -1 2025-11-24 -9999.0 5.42 12.08 15.76 19.67 23.09 29.43 32.97 -1 2025-11-25 -9999.0 5.19 11.64 15.83 19.77 23.75 29.47 35.40 -1 2025-11-26 -9999.0 7.24 11.72 15.81 19.82 24.52 29.33 34.26 -1 2025-11-27 -9999.0 7.40 12.06 16.04 20.06 24.46 29.26 34.23 -1 2025-11-28 -9999.0 7.72 11.93 16.49 20.51 25.13 29.24 33.97 -1 2025-11-29 -9999.0 8.14 12.70 16.73 20.90 24.80 29.10 33.90 -1 2025-11-30 -9999.0 8.47 12.68 18.16 21.52 24.97 31.02 33.91 -1 2025-12-01 -9999.0 8.64 12.75 18.98 21.93 25.66 31.79 35.30 -1 2025-12-02 -9999.0 8.84 13.04 18.72 22.26 25.61 31.90 34.60 -1 2025-12-03 -9999.0 8.71 13.53 19.18 22.46 25.75 31.78 34.78 -1 2025-12-04 -9999.0 8.74 13.99 18.58 22.76 26.33 32.72 37.08 -1 2025-12-05 -9999.0 8.58 14.16 18.91 22.84 25.58 33.19 35.83 -1 2025-12-06 -9999.0 8.50 14.78 18.39 22.95 25.74 32.89 35.84 -1 2025-12-07 -9999.0 8.66 14.33 18.68 22.96 26.09 31.70 35.72 -1 2025-12-08 -9999.0 8.36 14.20 19.90 22.98 26.05 32.05 35.53 -1 2025-12-09 -9999.0 8.05 14.30 20.81 22.93 25.95 31.87 33.85 -1 2025-12-10 -9999.0 7.75 14.77 20.28 22.76 25.39 29.83 33.45 -1 2025-12-11 -9999.0 7.36 14.15 19.85 22.59 25.71 30.88 33.28 -1 2025-12-12 -9999.0 6.86 13.63 19.87 22.44 25.65 31.21 34.12 -1 2025-12-13 -9999.0 6.96 13.68 19.18 22.51 26.17 31.50 34.40 -1 2025-12-14 -9999.0 6.95 13.89 19.54 22.74 26.20 31.49 34.97 -1 2025-12-15 -9999.0 6.95 13.46 19.93 23.03 26.81 30.38 36.09 -1 2025-12-16 -9999.0 8.11 12.88 19.89 23.08 26.80 31.20 35.75 -1 2025-12-17 -9999.0 6.06 12.37 20.40 23.18 26.55 30.99 36.77 -1 2025-12-18 -9999.0 5.02 12.63 20.53 22.84 26.32 30.37 37.70 -1 2025-12-19 -9999.0 5.38 13.29 20.36 22.47 26.38 29.07 38.47 -1 2025-12-20 -9999.0 5.59 13.42 20.15 22.14 25.39 28.49 38.93 -1 2025-12-21 -9999.0 5.96 14.90 20.25 22.19 25.72 28.55 36.27 -1 2025-12-22 -9999.0 11.01 15.46 20.00 22.38 25.72 28.46 33.24 -1 2025-12-23 -9999.0 12.81 16.81 20.27 22.75 26.07 28.23 32.67 -1 2025-12-24 -9999.0 14.45 17.13 20.43 23.16 25.86 28.98 32.04 -1 2025-12-25 -9999.0 14.70 17.10 21.31 23.46 26.04 29.10 31.40 -1 2025-12-26 -9999.0 14.70 17.10 20.77 23.61 27.12 29.17 32.63 -1 2025-12-27 -9999.0 15.27 16.18 21.13 23.49 26.48 29.43 32.89 -1 2025-12-28 -9999.0 15.50 16.83 20.87 23.54 26.44 30.06 33.32 -1 2025-12-29 -9999.0 14.97 17.11 20.46 23.40 25.91 29.60 33.93 -1 2025-12-30 -9999.0 12.67 16.68 20.10 23.17 25.62 28.84 35.11 -1 2025-12-31 -9999.0 10.26 16.78 21.56 23.13 25.42 28.72 34.18 -1 2026-01-01 -9999.0 7.74 16.58 22.62 23.43 25.68 28.91 33.22 -1 2026-01-02 -9999.0 7.47 15.55 21.77 23.49 26.02 29.25 31.01 -1 2026-01-03 -9999.0 7.26 16.66 22.62 23.55 26.21 29.75 30.72 -1 2026-01-04 -9999.0 7.04 16.65 22.29 23.68 26.29 30.04 35.22 -1 2026-01-05 -9999.0 6.85 17.68 22.42 23.89 26.53 30.61 37.67 -1 2026-01-06 -9999.0 6.69 17.68 21.90 23.78 26.06 30.65 37.16 -1 2026-01-07 -9999.0 6.63 17.34 22.12 23.71 26.14 29.81 36.58 -1 2026-01-08 -9999.0 8.42 16.87 21.41 23.61 25.82 29.31 35.93 -1 2026-01-09 -9999.0 10.28 17.74 21.23 23.64 26.37 29.18 36.29 -1 2026-01-10 -9999.0 10.69 17.76 20.81 23.64 26.12 28.70 36.60 -1 2026-01-11 -9999.0 10.60 18.44 21.22 23.71 26.12 28.81 33.77 -1 2026-01-12 -9999.0 10.33 18.47 21.21 23.62 26.08 28.62 33.09 -1 2026-01-13 -9999.0 8.55 18.52 21.17 23.61 26.20 29.32 36.37 -1 2026-01-14 -9999.0 8.65 18.58 21.15 23.56 25.62 29.38 35.68 -1 2026-01-15 -9999.0 8.72 18.25 21.26 23.30 25.28 29.48 36.67 -1 2026-01-16 -9999.0 8.71 18.10 20.83 23.01 25.12 29.62 37.01 -1 2026-01-17 -9999.0 8.71 17.57 20.31 22.96 25.97 29.51 37.01 -1 2026-01-18 -9999.0 10.35 17.18 20.48 23.09 26.65 30.09 34.05 -1 2026-01-19 -9999.0 9.86 17.28 20.41 23.13 26.46 30.65 33.05 -1 2026-01-20 -9999.0 9.80 17.74 20.16 23.03 25.91 29.87 33.35 -1 2026-01-21 -9999.0 9.65 16.38 20.44 23.21 26.48 29.82 35.11 -1 2026-01-22 -9999.0 9.89 16.19 20.02 23.60 27.12 30.11 33.89 -1 2026-01-23 -9999.0 9.47 16.39 20.03 23.65 26.42 30.63 33.13 -1 2026-01-24 -9999.0 7.18 16.79 20.50 23.50 27.22 30.26 33.46 -1 2026-01-25 -9999.0 7.43 17.82 21.13 23.57 26.96 29.41 34.51 -1 2026-01-26 -9999.0 8.97 17.15 20.90 23.37 26.28 29.87 35.06 -1 2026-01-27 -9999.0 9.63 15.79 20.51 22.67 25.50 28.59 35.01 -1 2026-01-28 -9999.0 10.37 14.32 19.88 22.22 25.29 27.91 34.94 -1 2026-01-29 -9999.0 9.67 15.35 19.74 21.93 24.65 27.79 37.37 -1 2026-01-30 -9999.0 8.91 14.59 19.81 21.67 24.63 27.30 37.26 -1 2026-01-31 -9999.0 6.81 14.96 19.16 21.55 24.80 26.75 36.90 -1 2026-02-01 -9999.0 4.38 14.83 18.90 21.54 24.90 26.77 36.60 -1 2026-02-02 -9999.0 4.28 14.60 18.75 21.31 24.73 27.49 36.62 -1 2026-02-03 -9999.0 4.56 14.05 18.28 21.30 24.76 27.84 37.00 -1 2026-02-04 -9999.0 4.09 12.96 18.16 21.21 24.80 28.95 37.10 -1 2026-02-05 -9999.0 4.07 11.79 17.69 20.96 24.81 29.32 35.78 -1 2026-02-06 -9999.0 3.72 11.06 17.47 20.77 24.82 29.47 38.27 -1 2026-02-07 -9999.0 3.66 10.35 18.12 20.90 25.05 29.22 37.82 -1 2026-02-08 -9999.0 3.52 9.73 17.92 20.77 24.87 28.08 37.75 -1 2026-02-09 -9999.0 3.49 9.67 18.33 20.62 24.84 27.91 37.65 -1 2026-02-10 -9999.0 3.39 10.26 18.48 20.52 24.35 27.76 37.37 -1 2026-02-11 -9999.0 3.25 10.58 18.17 20.36 23.58 28.99 35.14 -1 2026-02-12 -9999.0 2.79 9.99 17.91 20.17 23.53 29.60 34.77 -1 2026-02-13 -9999.0 2.59 10.40 17.41 19.98 23.64 29.77 36.81 -1 2026-02-14 -9999.0 2.37 9.90 17.07 19.79 23.48 29.52 37.36 -1 2026-02-15 -9999.0 2.26 10.97 16.83 19.86 23.62 29.05 37.52 -1 2026-02-16 -9999.0 2.03 11.65 17.14 19.89 23.22 28.62 37.44 -1 2026-02-17 -9999.0 1.99 11.26 17.30 19.68 23.02 28.32 37.04 -1 2026-02-18 -9999.0 1.86 10.87 16.79 19.55 23.00 29.13 36.79 -1 2026-02-19 -9999.0 2.01 10.24 16.46 19.41 22.35 29.44 39.74 -1 2026-02-20 -9999.0 2.04 10.08 16.63 19.28 22.77 29.03 38.93 -1 2026-02-21 -9999.0 2.18 9.48 16.39 18.96 22.20 29.37 38.36 -1 2026-02-22 -9999.0 2.19 9.27 16.63 19.08 22.83 29.58 39.41 -1 2026-02-23 -9999.0 2.13 9.75 16.56 19.24 23.01 29.01 40.93 -1 2026-02-24 -9999.0 2.20 9.11 16.39 19.22 22.49 29.06 39.37 -1 2026-02-25 -9999.0 2.43 8.99 15.84 19.21 23.26 29.19 38.98 -1 2026-02-26 -9999.0 2.50 8.72 15.55 19.27 23.32 28.22 38.33 -1 2026-02-27 -9999.0 2.24 8.56 15.57 19.16 23.03 28.64 46.36 -1 2026-02-28 -9999.0 2.04 8.76 14.95 18.82 22.93 28.30 45.83 -1 2026-03-01 -9999.0 1.77 8.47 14.39 18.48 22.44 27.86 44.58 -1 2026-03-02 -9999.0 1.86 8.40 14.26 18.16 22.01 27.69 43.12 -1 2026-03-03 -9999.0 1.70 8.49 14.00 17.92 21.76 26.99 41.45 -1 2026-03-04 -9999.0 1.83 9.27 14.23 17.79 21.62 26.64 36.96 -1 2026-03-05 -9999.0 1.94 9.24 13.97 17.61 21.81 26.66 33.01 -1 2026-03-06 -9999.0 2.02 9.44 13.57 17.42 22.10 25.85 30.02 -1 2026-03-07 -9999.0 1.62 9.01 13.41 17.22 21.46 24.30 29.87 -1 2026-03-08 -9999.0 1.66 8.52 13.46 17.08 22.18 25.09 29.70 -1 2026-03-09 -9999.0 2.48 8.29 12.38 16.94 21.76 26.07 30.79 -1 2026-03-10 -9999.0 2.39 7.66 12.18 16.58 21.30 25.22 29.41 -1 2026-03-11 -9999.0 2.29 7.20 12.53 16.25 20.39 25.05 30.05 -1 2026-03-12 -9999.0 2.31 7.72 12.51 16.03 20.37 25.16 30.19 -1 2026-03-13 -9999.0 2.24 7.91 12.26 15.69 19.44 24.27 29.96 -1 2026-03-14 -9999.0 1.46 7.51 11.76 15.52 19.47 24.33 29.31 -1 2026-03-15 -9999.0 1.45 7.17 11.82 15.46 19.67 25.05 28.44 -1 2026-03-16 -9999.0 1.57 6.67 11.90 15.34 19.57 24.61 28.19 -1 2026-03-17 -9999.0 1.43 7.61 11.64 15.15 18.84 24.56 28.29 -1 2026-03-18 -9999.0 1.41 7.85 11.09 14.93 18.79 23.53 30.21 -1 2026-03-19 -9999.0 1.31 7.30 9.51 14.61 18.23 23.90 32.97 -1 2026-03-20 -9999.0 1.27 7.01 9.81 14.51 18.50 24.23 31.53 -1 2026-03-21 -9999.0 1.23 6.36 9.88 14.47 17.27 24.97 32.12 -1 2026-03-22 -9999.0 1.31 6.01 9.92 14.37 18.28 23.61 32.54 -1 2026-03-23 -9999.0 1.53 5.85 9.29 14.23 17.78 23.13 32.21 -1 2026-03-24 -9999.0 1.45 5.95 9.38 14.17 16.99 24.12 32.94 -1 2026-03-25 -9999.0 1.36 5.36 9.75 14.11 17.18 24.04 39.13 -1 2026-03-26 -9999.0 1.29 5.48 10.00 13.83 17.04 24.41 33.75 -1 2026-03-27 -9999.0 1.26 5.46 9.97 13.68 15.18 24.79 33.48 -1 2026-03-28 -9999.0 1.16 5.36 9.36 13.52 15.12 25.16 37.76 -1 2026-03-29 -9999.0 1.44 5.27 8.94 13.54 16.24 24.94 37.74 -1 2026-03-30 -9999.0 1.47 4.90 8.76 13.42 16.56 24.72 35.40 -1 2026-03-31 -9999.0 1.59 4.90 8.38 13.33 16.88 24.51 38.34 -1 2026-04-01 -9999.0 1.38 4.89 8.51 13.31 16.39 24.08 39.07 -1 2026-04-02 -9999.0 1.24 4.66 8.17 13.42 16.27 24.22 42.09 -1 2026-04-03 -9999.0 3.28 4.91 8.47 13.48 16.46 24.24 38.92 -1 2026-04-04 -9999.0 2.63 4.56 7.86 13.43 16.01 24.11 39.26 -1 2026-04-05 -9999.0 2.46 4.55 7.87 13.55 16.51 23.61 45.48 -1 2026-04-06 -9999.0 3.04 4.54 7.81 13.64 16.81 24.38 45.26 -1 2026-04-07 -9999.0 2.80 4.33 7.58 13.75 16.84 26.28 44.87 -1 2026-04-08 -9999.0 2.27 4.49 7.39 13.62 16.60 25.46 43.25 -1 2026-04-09 -9999.0 2.80 4.49 7.86 13.52 16.31 25.66 38.94 -1 2026-04-10 -9999.0 3.83 4.70 7.23 13.41 15.85 25.66 39.40 -1 2026-04-11 -9999.0 3.54 4.61 8.43 13.43 16.00 25.39 37.54 -1 2026-04-12 -9999.0 3.78 4.79 8.33 13.34 14.79 24.21 40.09 -1 2026-04-13 -9999.0 3.67 4.52 8.71 13.45 15.68 23.21 40.50 -1 2026-04-14 -9999.0 3.04 4.60 9.32 13.80 15.68 22.42 44.03 -1 2026-04-15 -9999.0 2.63 4.21 8.31 13.74 15.24 24.52 41.08 -1 2026-04-16 -9999.0 2.16 4.01 8.35 13.95 15.46 27.36 47.06 -1 2026-04-17 -9999.0 1.55 4.00 7.96 14.32 16.48 27.57 52.24 -1 2026-04-18 -9999.0 0.70 3.93 7.43 14.43 16.90 28.90 52.35 -1 2026-04-19 -9999.0 0.59 3.82 7.21 14.39 16.13 28.57 53.90 -1 2026-04-20 -9999.0 0.53 3.80 7.17 14.73 15.26 32.95 52.27 -1 2026-04-21 -9999.0 0.36 3.88 6.86 14.76 14.51 31.00 49.54 -1 2026-04-22 -9999.0 1.07 3.73 7.81 14.76 14.99 34.27 47.40 -1 2026-04-23 -9999.0 1.69 3.60 7.45 14.67 15.07 34.59 48.46 -1 2026-04-24 -9999.0 3.10 3.61 8.69 14.66 14.87 31.42 47.87 -1 2026-04-25 -9999.0 3.05 3.88 7.64 14.76 17.59 30.41 44.33 -1 2026-04-26 -9999.0 2.89 4.06 8.23 14.85 18.83 30.90 45.46 -1 2026-04-27 -9999.0 0.71 3.87 8.44 14.89 16.58 32.48 53.37 -1 2026-04-28 -9999.0 0.74 4.35 7.90 15.17 17.63 31.62 50.28 -1 2026-04-29 -9999.0 2.70 4.67 7.96 15.99 20.00 32.79 44.79 -1 2026-04-30 -9999.0 2.17 3.77 7.13 14.87 19.22 32.96 39.24 -1