Name: NH Vortex Area Units: million km!U2!N Level: 360 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 21.31 0.34 12.18 26.08 33.76 45.65 49.77 55.00 0 2025-10-02 11.53 1.41 14.25 25.62 34.37 45.83 50.16 53.71 0 2025-10-03 -9999.0 0.31 12.98 23.71 33.18 46.63 50.70 52.35 -1 2025-10-04 -9999.0 0.33 12.44 26.66 32.81 44.73 49.65 51.96 -1 2025-10-05 9.63 0.81 11.12 24.29 32.66 43.85 50.71 54.04 0 2025-10-06 21.45 3.64 12.40 22.46 32.70 42.97 51.48 54.79 0 2025-10-07 21.47 0.13 12.90 23.57 34.25 44.51 53.90 59.87 0 2025-10-08 32.81 0.55 8.70 30.14 35.06 43.86 54.06 57.16 0 2025-10-09 36.89 0.89 15.14 30.07 36.24 48.86 54.42 55.99 0 2025-10-10 39.26 1.07 13.93 31.20 36.59 48.07 53.36 58.20 0 2025-10-11 39.38 5.24 13.59 34.11 37.95 48.28 54.24 58.59 0 2025-10-12 43.89 1.08 10.75 35.42 38.05 48.72 53.74 56.36 0 2025-10-13 43.96 1.73 15.67 33.76 36.88 45.22 52.08 54.25 0 2025-10-14 49.74 7.72 19.16 28.82 36.92 45.36 53.03 55.38 0 2025-10-15 40.86 4.60 13.28 33.39 35.73 44.13 48.66 55.98 0 2025-10-16 38.24 0.65 10.61 31.85 35.11 43.51 46.44 55.55 0 2025-10-17 40.90 0.47 9.15 29.37 32.99 42.40 47.56 53.96 0 2025-10-18 36.59 5.39 9.38 32.57 34.64 44.83 50.12 55.51 0 2025-10-19 32.58 0.23 8.21 27.64 31.69 43.06 48.63 55.11 0 2025-10-20 36.37 0.26 8.04 26.30 32.11 40.90 47.35 57.48 0 2025-10-21 36.60 0.32 10.66 28.26 32.67 40.35 50.65 57.28 0 2025-10-22 38.15 2.14 15.43 24.21 33.31 42.69 52.57 57.90 0 2025-10-23 37.38 1.76 12.38 24.41 32.04 41.42 50.18 56.96 0 2025-10-24 39.95 4.56 13.63 23.46 32.93 42.63 52.58 56.70 0 2025-10-25 40.16 7.40 11.75 23.89 32.20 41.18 51.21 55.12 0 2025-10-26 39.36 5.91 12.48 21.32 30.43 37.74 47.60 54.11 0 2025-10-27 38.65 6.66 10.83 26.08 30.87 37.50 49.06 55.79 0 2025-10-28 41.42 1.46 13.96 23.53 32.27 41.84 49.06 55.90 6 2025-10-29 39.37 2.06 10.85 26.69 32.48 42.13 49.69 54.85 12 2025-10-30 -9999.0 0.26 15.08 28.09 33.78 42.28 52.52 57.55 36 2025-10-31 33.05 0.26 13.65 27.46 33.05 40.52 51.28 56.13 60 2025-11-01 27.50 1.92 20.91 26.30 33.63 39.41 51.20 56.01 84 2025-11-02 -9999.0 2.15 14.44 21.85 30.70 39.26 49.07 56.07 108 2025-11-03 -9999.0 2.04 16.34 28.21 32.90 39.57 49.40 52.99 132 2025-11-04 22.65 2.02 19.80 25.94 32.76 39.89 49.23 52.78 156 2025-11-05 -9999.0 5.54 15.80 27.07 32.69 39.19 49.19 54.52 180 2025-11-06 16.19 5.89 17.70 30.47 35.13 42.38 50.19 55.71 204 2025-11-07 -9999.0 5.21 11.22 26.51 33.64 42.54 50.93 56.25 228 2025-11-08 -9999.0 2.55 13.18 26.88 33.88 43.49 49.23 55.79 -1 2025-11-09 -9999.0 2.60 16.58 24.74 32.84 42.50 48.18 55.00 -1 2025-11-10 -9999.0 1.79 13.35 26.98 32.27 41.69 48.72 54.28 -1 2025-11-11 -9999.0 2.38 17.36 24.03 33.20 41.75 50.26 59.09 -1 2025-11-12 -9999.0 2.42 16.86 26.50 33.90 42.34 50.20 52.65 -1 2025-11-13 -9999.0 2.40 16.04 27.96 34.15 41.82 50.10 56.23 -1 2025-11-14 -9999.0 2.29 16.90 29.22 33.36 41.05 48.79 51.88 -1 2025-11-15 -9999.0 9.00 14.52 27.94 33.41 41.56 47.68 53.13 -1 2025-11-16 -9999.0 7.21 13.09 26.19 32.12 40.01 45.99 55.35 -1 2025-11-17 -9999.0 4.18 17.70 26.44 32.08 40.30 45.60 56.41 -1 2025-11-18 -9999.0 4.14 12.40 25.49 30.80 39.98 45.34 56.46 -1 2025-11-19 -9999.0 4.96 12.40 25.81 31.26 37.32 46.98 54.97 -1 2025-11-20 -9999.0 9.31 13.44 26.37 30.91 37.13 45.94 52.56 -1 2025-11-21 -9999.0 9.46 17.17 27.17 31.85 37.88 46.14 53.86 -1 2025-11-22 -9999.0 4.12 17.12 27.14 30.72 35.14 45.09 51.83 -1 2025-11-23 -9999.0 1.15 14.03 26.67 29.56 35.26 43.47 53.44 -1 2025-11-24 -9999.0 1.19 13.68 24.66 29.49 37.23 45.31 52.40 -1 2025-11-25 -9999.0 3.88 14.21 23.73 29.43 35.27 44.09 50.80 -1 2025-11-26 -9999.0 5.21 14.46 25.41 29.75 35.15 43.97 47.52 -1 2025-11-27 -9999.0 3.72 19.53 25.05 31.44 36.86 45.05 48.94 -1 2025-11-28 -9999.0 3.49 16.47 24.83 30.47 37.15 42.44 45.73 -1 2025-11-29 -9999.0 3.82 18.28 25.40 30.82 37.89 42.81 51.62 -1 2025-11-30 -9999.0 9.42 20.41 24.79 31.25 36.56 45.05 56.56 -1 2025-12-01 -9999.0 8.59 18.47 26.67 31.33 37.80 42.38 56.12 -1 2025-12-02 -9999.0 4.81 18.08 25.56 31.48 37.34 44.56 51.08 -1 2025-12-03 -9999.0 6.31 18.62 25.38 32.42 40.05 45.06 48.23 -1 2025-12-04 -9999.0 11.69 14.99 23.56 31.03 38.95 43.73 48.48 -1 2025-12-05 -9999.0 8.33 13.61 22.91 30.85 39.36 45.83 50.00 -1 2025-12-06 -9999.0 4.58 13.82 24.12 30.44 38.75 43.19 51.45 -1 2025-12-07 -9999.0 10.68 16.97 25.71 31.19 36.86 43.37 50.34 -1 2025-12-08 -9999.0 7.27 18.80 25.77 30.75 36.56 45.41 48.54 -1 2025-12-09 -9999.0 5.85 18.26 25.71 30.06 35.13 43.03 49.31 -1 2025-12-10 -9999.0 3.21 16.71 25.03 29.80 36.73 41.98 53.68 -1 2025-12-11 -9999.0 2.00 14.25 26.03 30.46 36.29 43.78 52.32 -1 2025-12-12 -9999.0 2.59 11.57 25.80 29.45 36.90 43.37 50.02 -1 2025-12-13 -9999.0 2.52 10.48 25.34 29.40 37.49 44.83 52.08 -1 2025-12-14 -9999.0 2.56 10.79 25.72 30.19 39.83 45.55 52.77 -1 2025-12-15 -9999.0 6.82 11.70 27.71 31.59 38.99 45.12 54.49 -1 2025-12-16 -9999.0 5.84 16.32 27.48 32.54 38.02 47.20 54.12 -1 2025-12-17 -9999.0 6.36 16.92 25.99 32.26 38.09 47.71 52.91 -1 2025-12-18 -9999.0 5.41 19.25 29.71 34.09 41.46 47.70 53.84 -1 2025-12-19 -9999.0 2.57 21.85 27.22 33.70 41.46 48.46 55.54 -1 2025-12-20 -9999.0 2.88 21.06 27.36 33.44 39.21 49.86 53.91 -1 2025-12-21 -9999.0 0.54 16.90 29.22 33.16 38.86 47.06 52.27 -1 2025-12-22 -9999.0 2.86 17.40 27.09 32.93 40.43 47.33 52.87 -1 2025-12-23 -9999.0 3.99 15.62 24.55 31.39 38.83 46.48 55.54 -1 2025-12-24 -9999.0 5.83 14.77 26.47 32.11 40.12 46.28 54.58 -1 2025-12-25 -9999.0 3.93 14.47 24.51 31.62 39.71 45.32 50.56 -1 2025-12-26 -9999.0 8.30 15.74 23.61 31.40 39.44 44.39 52.30 -1 2025-12-27 -9999.0 3.65 14.07 23.27 30.71 38.85 45.43 50.65 -1 2025-12-28 -9999.0 3.97 15.59 26.37 31.65 38.69 46.43 48.78 -1 2025-12-29 -9999.0 4.40 18.26 27.35 31.66 38.18 45.18 52.64 -1 2025-12-30 -9999.0 4.17 17.90 25.42 31.65 38.08 46.44 53.36 -1 2025-12-31 -9999.0 0.64 19.46 25.97 31.89 38.53 45.94 53.39 -1 2026-01-01 -9999.0 0.80 17.07 25.93 31.41 38.41 44.90 55.11 -1 2026-01-02 -9999.0 0.95 15.92 28.47 31.39 38.58 43.90 49.77 -1 2026-01-03 -9999.0 11.70 17.68 27.62 32.50 39.00 46.14 49.77 -1 2026-01-04 -9999.0 10.73 18.04 27.08 32.67 39.88 44.86 49.49 -1 2026-01-05 -9999.0 9.30 15.71 27.63 33.03 39.37 44.34 52.15 -1 2026-01-06 -9999.0 8.25 19.48 28.38 33.62 40.23 46.34 53.11 -1 2026-01-07 -9999.0 9.16 20.96 25.12 33.99 40.56 48.12 55.79 -1 2026-01-08 -9999.0 11.76 20.63 24.64 33.18 40.31 46.79 55.37 -1 2026-01-09 -9999.0 15.52 18.98 26.32 33.88 41.24 45.89 55.78 -1 2026-01-10 -9999.0 13.87 19.06 24.91 33.79 41.70 46.21 56.10 -1 2026-01-11 -9999.0 13.01 19.76 24.54 33.60 41.99 46.93 54.91 -1 2026-01-12 -9999.0 10.55 18.75 24.70 32.88 39.50 48.78 55.49 -1 2026-01-13 -9999.0 12.07 17.22 25.56 32.91 40.04 46.95 54.22 -1 2026-01-14 -9999.0 11.79 17.00 26.30 32.25 37.98 45.13 54.04 -1 2026-01-15 -9999.0 9.57 17.82 27.18 32.06 36.89 45.48 53.98 -1 2026-01-16 -9999.0 7.30 16.79 25.86 31.74 36.36 44.71 53.86 -1 2026-01-17 -9999.0 5.05 17.64 27.08 31.42 36.22 44.66 52.67 -1 2026-01-18 -9999.0 3.73 18.36 26.02 31.44 38.29 44.17 53.96 -1 2026-01-19 -9999.0 4.79 17.31 26.01 31.73 40.36 43.89 52.65 -1 2026-01-20 -9999.0 10.67 18.40 26.05 31.74 38.61 43.00 52.80 -1 2026-01-21 -9999.0 10.58 18.28 26.47 31.45 38.36 44.99 48.72 -1 2026-01-22 -9999.0 12.40 18.29 26.39 32.05 37.63 45.80 49.30 -1 2026-01-23 -9999.0 9.76 19.74 26.00 31.72 38.37 44.39 50.63 -1 2026-01-24 -9999.0 7.80 21.40 24.89 31.31 37.65 44.22 49.60 -1 2026-01-25 -9999.0 5.84 21.46 25.83 31.33 37.32 42.40 50.88 -1 2026-01-26 -9999.0 8.29 20.21 27.87 32.52 39.17 46.68 49.69 -1 2026-01-27 -9999.0 9.97 20.18 28.59 32.86 38.43 46.24 49.90 -1 2026-01-28 -9999.0 11.87 20.97 28.36 33.04 38.43 48.13 55.78 -1 2026-01-29 -9999.0 8.34 21.64 28.95 33.43 36.14 47.80 51.62 -1 2026-01-30 -9999.0 13.88 20.19 27.36 33.04 36.73 47.26 50.18 -1 2026-01-31 -9999.0 13.49 18.90 24.84 31.65 36.89 48.11 51.90 -1 2026-02-01 -9999.0 13.36 19.14 23.77 31.47 37.48 47.63 53.42 -1 2026-02-02 -9999.0 4.74 18.26 23.99 31.12 38.45 45.84 54.27 -1 2026-02-03 -9999.0 3.88 16.52 24.20 30.04 34.72 44.58 54.92 -1 2026-02-04 -9999.0 3.95 15.08 23.16 30.01 35.09 45.29 54.47 -1 2026-02-05 -9999.0 4.04 15.78 25.19 30.34 35.17 46.01 51.27 -1 2026-02-06 -9999.0 4.43 14.66 26.10 29.50 33.57 44.52 51.35 -1 2026-02-07 -9999.0 4.73 13.96 26.91 29.76 34.70 43.47 50.21 -1 2026-02-08 -9999.0 5.12 16.96 25.40 30.04 35.35 45.05 49.12 -1 2026-02-09 -9999.0 3.62 18.39 24.71 30.08 36.83 45.38 48.87 -1 2026-02-10 -9999.0 1.87 18.31 23.89 30.12 37.69 43.73 49.52 -1 2026-02-11 -9999.0 2.43 11.67 24.46 30.59 38.56 44.13 49.11 -1 2026-02-12 -9999.0 3.08 14.72 25.92 30.74 37.22 44.52 52.81 -1 2026-02-13 -9999.0 3.00 17.46 25.24 30.51 37.12 43.65 53.44 -1 2026-02-14 -9999.0 3.21 18.07 25.37 29.87 35.39 43.01 55.20 -1 2026-02-15 -9999.0 3.45 18.00 24.55 29.67 36.15 41.56 52.09 -1 2026-02-16 -9999.0 2.25 12.49 22.62 29.12 36.24 41.74 53.14 -1 2026-02-17 -9999.0 1.59 13.35 21.25 28.31 35.90 42.37 51.48 -1 2026-02-18 -9999.0 2.24 12.55 20.49 28.03 35.71 43.54 50.18 -1 2026-02-19 -9999.0 2.10 9.96 22.06 28.22 37.73 43.08 49.45 -1 2026-02-20 -9999.0 1.70 10.03 20.94 27.34 35.39 42.59 48.28 -1 2026-02-21 -9999.0 1.72 8.85 20.86 26.64 31.98 40.18 51.08 -1 2026-02-22 -9999.0 1.65 8.02 19.69 25.72 30.98 39.78 48.76 -1 2026-02-23 -9999.0 2.46 7.24 20.88 25.89 31.15 40.78 48.60 -1 2026-02-24 -9999.0 2.98 6.93 19.00 25.14 31.77 42.52 48.42 -1 2026-02-25 -9999.0 1.93 7.68 18.44 25.43 31.36 44.01 48.96 -1 2026-02-26 -9999.0 1.00 6.27 18.28 24.79 30.48 43.28 49.69 -1 2026-02-27 -9999.0 1.40 5.97 18.44 24.62 30.70 43.34 49.09 -1 2026-02-28 -9999.0 2.21 5.96 18.32 24.43 30.95 42.50 47.95 -1 2026-03-01 -9999.0 2.23 6.75 16.16 24.10 30.19 40.84 47.88 -1 2026-03-02 -9999.0 1.95 6.19 17.15 24.30 30.61 38.54 49.22 -1 2026-03-03 -9999.0 1.31 6.13 15.99 24.33 30.72 39.10 50.64 -1 2026-03-04 -9999.0 1.13 5.89 15.93 24.75 30.52 41.80 49.68 -1 2026-03-05 -9999.0 0.68 5.42 16.15 24.70 30.50 44.94 51.56 -1 2026-03-06 -9999.0 0.79 5.47 18.88 25.17 32.47 41.34 49.40 -1 2026-03-07 -9999.0 2.57 6.45 16.43 24.10 32.72 36.12 49.58 -1 2026-03-08 -9999.0 2.44 5.37 16.89 23.46 29.73 38.26 49.24 -1 2026-03-09 -9999.0 2.42 5.31 15.55 22.09 27.65 37.21 48.99 -1 2026-03-10 -9999.0 2.27 5.27 14.82 21.65 25.95 38.12 48.04 -1 2026-03-11 -9999.0 3.73 6.17 15.09 21.26 26.70 38.53 47.51 -1 2026-03-12 -9999.0 1.77 6.11 14.91 21.84 26.58 36.67 49.51 -1 2026-03-13 -9999.0 2.68 7.13 14.58 21.90 28.35 37.84 48.46 -1 2026-03-14 -9999.0 2.51 7.69 15.58 21.90 27.17 36.96 46.03 -1 2026-03-15 -9999.0 1.82 7.55 14.83 21.59 26.59 37.57 49.78 -1 2026-03-16 -9999.0 2.06 7.41 14.71 21.65 26.46 34.64 50.75 -1 2026-03-17 -9999.0 2.65 6.76 14.73 20.73 26.30 33.44 49.24 -1 2026-03-18 -9999.0 1.62 7.75 16.15 21.54 26.36 33.15 53.55 -1 2026-03-19 -9999.0 0.97 5.99 14.31 20.39 25.78 32.03 53.79 -1 2026-03-20 -9999.0 1.14 7.27 16.45 20.64 24.39 33.29 51.02 -1 2026-03-21 -9999.0 0.73 4.91 15.34 19.70 23.47 32.09 49.62 -1 2026-03-22 -9999.0 0.60 4.77 15.84 19.77 23.51 31.89 51.85 -1 2026-03-23 -9999.0 1.50 3.14 15.54 19.21 22.80 30.05 52.07 -1 2026-03-24 -9999.0 1.60 4.56 15.97 20.01 24.35 32.23 45.71 -1 2026-03-25 -9999.0 1.85 4.55 13.89 19.67 24.95 31.82 44.26 -1 2026-03-26 -9999.0 1.66 6.70 15.40 19.68 23.97 30.89 40.17 -1 2026-03-27 -9999.0 1.53 8.81 13.15 19.41 25.01 32.27 39.74 -1 2026-03-28 -9999.0 1.67 9.06 13.39 19.47 24.26 31.70 37.53 -1 2026-03-29 -9999.0 2.16 8.25 12.72 19.12 24.26 31.44 37.05 -1 2026-03-30 -9999.0 0.15 8.73 12.23 19.06 24.03 32.02 38.99 -1 2026-03-31 -9999.0 0.58 5.55 11.72 19.15 24.58 32.94 39.75 -1 2026-04-01 -9999.0 0.71 6.65 10.71 18.67 23.53 31.77 50.91 -1 2026-04-02 -9999.0 1.50 6.16 10.26 18.24 22.56 30.39 51.50 -1 2026-04-03 -9999.0 2.11 5.31 9.71 18.00 21.82 32.43 54.46 -1 2026-04-04 -9999.0 0.57 4.88 10.35 17.40 21.35 33.26 51.09 -1 2026-04-05 -9999.0 0.89 4.04 10.37 17.30 21.36 32.41 46.60 -1 2026-04-06 -9999.0 1.37 4.37 10.46 16.81 21.09 31.49 41.58 -1 2026-04-07 -9999.0 2.47 4.65 10.56 17.37 23.05 29.85 43.34 -1 2026-04-08 -9999.0 2.68 4.46 9.31 17.37 23.01 32.46 43.43 -1 2026-04-09 -9999.0 2.99 5.17 8.99 17.23 21.10 32.39 44.97 -1 2026-04-10 -9999.0 0.53 5.76 9.10 17.62 22.40 30.66 53.04 -1 2026-04-11 -9999.0 0.52 6.25 11.06 18.45 22.37 31.09 51.39 -1 2026-04-12 -9999.0 0.20 5.45 10.26 17.94 22.11 31.13 47.69 -1 2026-04-13 -9999.0 4.39 7.02 13.57 19.00 21.72 37.01 49.90 -1 2026-04-14 -9999.0 0.16 5.73 12.27 17.77 21.43 32.94 50.24 -1 2026-04-15 -9999.0 0.54 5.03 12.78 17.40 21.02 30.72 48.22 -1 2026-04-16 -9999.0 1.14 4.92 11.65 17.58 21.92 30.95 47.56 -1 2026-04-17 -9999.0 2.03 4.90 12.27 17.52 22.59 29.76 45.79 -1 2026-04-18 -9999.0 1.43 4.49 9.95 16.60 20.55 30.06 41.64 -1 2026-04-19 -9999.0 1.55 4.63 9.89 17.23 23.46 31.59 37.05 -1 2026-04-20 -9999.0 1.13 3.79 9.76 16.45 20.09 32.17 37.62 -1 2026-04-21 -9999.0 1.16 3.85 10.16 15.83 18.51 30.96 41.23 -1 2026-04-22 -9999.0 1.18 3.60 10.27 15.58 17.83 30.26 46.34 -1 2026-04-23 -9999.0 0.35 3.21 6.55 15.15 19.97 32.20 40.38 -1 2026-04-24 -9999.0 0.17 1.85 6.05 14.16 20.72 28.71 39.31 -1 2026-04-25 -9999.0 0.40 1.67 5.33 15.06 20.14 33.19 41.82 -1 2026-04-26 -9999.0 0.69 1.62 5.27 14.76 20.06 33.88 45.80 -1 2026-04-27 -9999.0 0.20 1.25 4.10 14.05 23.25 30.41 40.96 -1 2026-04-28 -9999.0 0.58 1.96 6.15 14.49 19.43 28.92 44.47 -1 2026-04-29 -9999.0 0.19 1.03 4.90 14.27 18.35 32.49 46.44 -1 2026-04-30 -9999.0 0.24 1.72 6.83 14.67 19.20 32.12 47.37 -1