Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-29/12 UTC MPAS cell scale: 5.5 km FCST UTC UTC T Td Altim Spd Gust Dir Grid VVV RH1RH2RH3 T1T2T3 ACCUM HR DAY HR (C) (C) (in Hg)(kts)(kts)(deg)(deg) (*) (% wrt water) (C) (*) 0 29 12 -33.1 -36.8 29.39 3 3 84 59 000 98100 37 -31-28-26 000 1 29 13 -33.0 -36.2 29.38 3 5 97 72 003 100100 33 -31-28-26 000 2 29 14 -33.1 -36.3 29.39 4 7 95 70 004 100 99 29 -31-28-26 000 3 29 15 -33.3 -36.6 29.39 4 7 104 79 002 99 99 27 -31-28-27 000 4 29 16 -33.9 -37.1 29.38 4 7 102 76 002 101 95 27 -30-28-26 000 5 29 17 -34.7 -37.7 29.38 4 7 101 76 001 106 92 25 -30-27-26 000 6 29 18 -35.7 -37.9 29.38 4 5 111 85 003 117 91 26 -29-27-26 000 7 29 19 -37.1 -38.7 29.37 4 5 123 97 003 124 93 28 -29-27-26 000 8 29 20 -38.5 -40.3 29.34 5 6 121 95 005 124 94 28 -29-27-26 000 9 29 21 -39.5 -41.2 29.35 5 6 110 84 006 124 94 24 -29-27-26 000 10 29 22 -40.3 -42.1 29.34 4 6 100 74 006 124 89 21 -29-27-26 000 11 29 23 -40.9 -42.7 29.33 3 6 78 53 003 124 82 20 -28-27-26 000 12 30 00 -41.7 -43.5 29.32 3 6 70 44 000 124 79 20 -28-26-26 000 13 30 01 -42.8 -44.7 29.30 3 6 92 67 001 124 77 20 -28-26-25 000 14 30 02 -44.0 -46.1 29.31 4 7 97 72 000 124 78 20 -28-26-25 000 15 30 03 -43.9 -46.0 29.29 4 7 88 62 000 124 79 19 -28-26-25 000 16 30 04 -44.3 -46.5 29.28 5 8 76 50 002 124 86 18 -28-26-25 000 17 30 05 -44.2 -46.4 29.28 6 9 55 30 003 124 98 22 -28-26-25 000 18 30 06 -44.0 -46.2 29.27 5 10 52 26 004 124100 25 -28-26-26 000 19 30 07 -44.7 -47.1 29.28 6 9 78 52 003 124 92 29 -28-27-27 000 20 30 08 -45.6 -48.1 29.28 6 9 86 60 002 124 59 28 -28-27-27 000 21 30 09 -44.8 -47.4 29.28 4 8 70 45 006 124 57 28 -28-26-26 000 22 30 10 -43.5 -45.8 29.27 3 9 66 40 004 124 99 26 -28-26-25 000 23 30 11 -42.3 -44.5 29.25 4 10 91 65 001 122112 24 -27-26-25 000 24 30 12 -40.5 -42.9 29.25 3 12 74 48 000 117 96 26 -27-26-24 000 25 30 13 -38.0 -41.0 29.26 3 17 84 58 005 108 34 23 -27-26-26 000 26 30 14 -36.6 -40.3 29.26 5 18 104 78 001 97 36 27 -27-26-25 000 27 30 15 -36.3 -40.1 29.25 6 15 123 97 000 96 51 24 -28-26-25 000 28 30 16 -36.1 -39.7 29.26 7 15 105 80 000 97 58 21 -28-26-25 000 29 30 17 -36.5 -40.0 29.25 6 15 88 63 000 100 66 23 -28-26-26 000 30 30 18 -36.8 -39.4 29.26 7 14 78 52 000 112 67 27 -28-26-25 000 31 30 19 -36.8 -38.7 29.26 8 15 86 60 -002 124 65 23 -28-26-26 000 32 30 20 -38.5 -40.4 29.26 8 15 88 63 000 124 78 21 -27-26-26 000 33 30 21 -40.1 -42.1 29.26 9 18 77 52 000 126 68 20 -28-26-27 000 34 30 22 -40.3 -42.3 29.25 9 22 90 65 -001 125 75 18 -27-26-26 000 35 30 23 -40.1 -42.0 29.25 10 23 89 63 000 127 68 20 -26-25-26 000 36 01 00 -39.1 -40.7 29.26 11 25 75 50 -001 129 68 21 -27-25-25 000 37 01 01 -36.3 -38.1 29.27 13 30 71 46 -001 124 72 21 -27-25-25 000 38 01 02 -33.8 -36.6 29.27 15 31 70 44 -001 107 86 21 -27-26-25 000 39 01 03 -32.7 -35.5 29.27 16 30 77 51 000 106 85 22 -28-26-25 000 40 01 04 -31.1 -33.9 29.27 17 32 76 51 000 105 92 19 -27-26-26 000 41 01 05 -28.2 -31.4 29.27 19 34 75 50 000 97100 23 -26-26-25 000 42 01 06 -26.3 -30.1 29.27 21 37 77 52 -001 89 95 30 -25-26-25 000 43 01 07 -25.8 -29.8 29.28 22 36 78 53 -002 87 86 33 -24-25-25 000 44 01 08 -24.0 -28.5 29.27 22 37 76 50 000 80 81 48 -23-24-25 000 45 01 09 -22.2 -27.1 29.27 21 36 78 52 -001 75 61 65 -21-22-23 000 46 01 10 -21.5 -26.3 29.26 23 38 76 50 -002 76 58 72 -21-21-22 000 47 01 11 -19.8 -24.8 29.26 25 39 75 49 -002 73 64 61 -20-21-22 000 48 01 12 -18.5 -23.6 29.26 26 39 72 47 -001 71 65 48 -19-20-21 000 49 01 13 -17.3 -22.2 29.25 26 39 73 48 000 73 71 47 -18-19-21 000 50 01 14 -16.6 -21.4 29.24 27 39 72 46 000 73 75 44 -17-19-20 000 51 01 15 -16.0 -20.5 29.24 26 39 71 45 000 75 77 45 -17-18-19 000 52 01 16 -15.3 -19.7 29.24 26 39 73 47 000 75 77 48 -16-17-18 000 53 01 17 -14.7 -19.0 29.24 26 39 71 46 000 76 80 62 -15-16-18 000 54 01 18 -14.3 -18.5 29.23 25 39 76 51 000 76 74 98 -14-16-17 000 55 01 19 -14.0 -17.5 29.22 27 40 74 49 000 82 90103 -14-16-17 003 56 01 20 -13.9 -16.6 29.21 27 41 74 48 000 89 98103 -14-16-17 014 57 01 21 -13.7 -16.3 29.20 28 42 75 49 001 89 98104 -14-15-17 018 58 01 22 -13.7 -16.2 29.20 29 42 74 48 000 91100104 -14-15-17 016 59 01 23 -13.5 -15.9 29.20 30 44 74 48 000 92100103 -14-15-17 023 60 02 00 -13.1 -15.5 29.19 30 43 74 48 000 92100103 -14-15-16 033 61 02 01 -13.3 -15.5 29.19 30 44 74 48 -001 93101103 -14-15-16 043 62 02 02 -13.1 -15.3 29.19 31 44 74 49 -001 93101103 -14-15-16 052 63 02 03 -12.9 -15.1 29.18 31 45 74 48 -001 93101103 -13-15-16 059 64 02 04 -12.6 -14.9 29.16 30 44 74 48 -004 92100104 -13-14-16 048 65 02 05 -12.5 -14.8 29.16 31 45 73 48 -003 92100103 -13-14-16 046 66 02 06 -12.4 -15.0 29.16 31 45 72 47 -003 89 97104 -13-14-16 045 67 02 07 -12.1 -15.6 29.16 29 44 72 47 001 81 88105 -13-14-15 024 68 02 08 -11.9 -15.6 29.16 28 42 74 48 002 80 86106 -12-14-15 010 69 02 09 -12.0 -15.6 29.16 27 41 76 51 000 79 82107 -12-14-15 004 70 02 10 -12.0 -15.7 29.15 26 41 78 52 001 79 80104 -12-13-14 002 71 02 11 -12.1 -16.2 29.14 25 40 81 56 002 76 72 98 -12-12-14 001 72 02 12 -12.2 -16.4 29.13 24 38 83 58 001 75 64 92 -11-12-13 000 73 02 13 -12.4 -16.7 29.12 21 36 84 58 003 74 57 88 -11-12-13 000 74 02 14 -12.1 -16.4 29.11 19 35 84 58 000 74 53 83 -11-11-12 000 75 02 15 -12.2 -16.4 29.08 18 33 84 58 000 75 51 81 -10-11-11 000 76 02 16 -12.2 -16.5 29.06 17 31 83 58 000 74 51 77 -10-11-11 000 77 02 17 -12.4 -16.7 29.04 15 30 94 68 000 74 46 72 -9-10-11 000 78 02 18 -13.5 -17.6 29.01 13 28 95 69 000 76 48 62 -10-10-10 000 79 02 19 -14.8 -18.1 29.00 12 30 91 65 000 84 47 57 -10 -9 -9 000 80 02 20 -15.7 -18.6 28.98 12 32 90 64 000 87 47 54 -9-10-10 000 81 02 21 -17.7 -19.6 28.96 11 31 94 69 000 100 46 47 -10-10-10 000 82 02 22 -18.8 -20.2 28.95 11 29 92 66 000 107 45 50 -10-10-10 000 83 02 23 -18.6 -20.5 28.94 11 32 91 65 -001 101 44 59 -10 -9-10 000 84 03 00 -17.6 -20.5 28.93 10 32 93 68 001 90 44 63 -10-10-10 000 85 03 01 -17.0 -20.7 28.91 12 32 89 63 001 81 52 51 -11-11-11 000 86 03 02 -19.0 -21.9 28.90 10 28 89 63 000 90 45 54 -10-10-12 000 87 03 03 -21.1 -22.4 28.88 9 22 91 65 -003 110 41 64 -11-11-11 000 88 03 04 -22.1 -22.9 28.86 9 24 89 63 -002 120 48 60 -11-12-12 000 89 03 05 -22.5 -23.2 28.85 8 23 91 65 -002 120 51 88 -11-12-12 000 90 03 06 -23.0 -23.7 28.84 8 19 94 68 000 123 55 92 -11-11-12 000 91 03 07 -23.5 -24.2 28.82 7 18 89 64 000 124 49 84 -11-11-11 000 92 03 08 -24.2 -24.9 28.81 5 17 88 62 001 125 50 85 -11-12-12 000 93 03 09 -25.9 -26.7 28.80 4 14 158 133 000 128 49 85 -11-11-12 000 94 03 10 -24.6 -25.5 28.79 5 14 148 122 000 126 52 80 -11-11-11 000 95 03 11 -22.3 -24.0 28.78 5 14 132 106 000 109 49 84 -11-11-11 000 96 03 12 -20.6 -22.6 28.77 5 12 133 108 000 103 48 92 -11-10-10 000 97 03 13 -19.4 -21.2 28.76 5 9 161 136 000 105 45 98 -12-10-10 000 98 03 14 -18.1 -20.7 28.74 6 6 165 140 000 93 42 95 -11-10-10 000 99 03 15 -17.9 -20.8 28.73 5 5 163 137 000 88 37 89 -11-10-10 000 100 03 16 -18.2 -20.8 28.72 5 5 170 144 000 92 35 80 -11-10-11 000 101 03 17 -18.8 -21.0 28.71 5 6 186 161 000 98 45 63 -11-10-11 000 102 03 18 -19.0 -20.8 28.71 5 6 189 163 -001 104 52 57 -11-11-11 000 103 03 19 -18.8 -19.8 28.71 4 4 180 155 -001 111 44 55 -11-11-12 000 104 03 20 -20.7 -20.9 28.72 3 4 106 81 -002 121 51 54 -11-11-12 000 105 03 21 -20.4 -21.1 28.72 6 13 64 38 -002 121 60 79 -11-11-11 000 106 03 22 -17.1 -19.0 28.73 6 14 77 52 -002 100100104 -12-11-11 014 107 03 23 -16.2 -18.1 28.73 5 12 86 60 -002 100 99100 -11-11-12 027 108 04 00 -16.2 -18.1 28.74 5 12 109 83 -001 100101 99 -11-11-12 025 109 04 01 -15.9 -17.6 28.75 5 12 113 87 000 101 99100 -11-11-12 018 110 04 02 -15.3 -16.8 28.75 6 16 95 70 000 103101102 -10-11-11 011 111 04 03 -14.9 -16.1 28.75 6 17 86 60 000 106101103 -10-10-11 010 112 04 04 -14.8 -15.8 28.75 5 15 83 58 000 109 99105 -10-10-11 009 113 04 05 -15.5 -16.0 28.75 5 14 84 58 -002 116109101 -10-11-12 003 114 04 06 -15.5 -16.6 28.76 4 12 94 68 -001 109104105 -10-10-11 011 115 04 07 -14.8 -15.6 28.78 5 10 95 70 -004 111102105 -10-10-11 011 116 04 08 -13.1 -13.9 28.79 5 14 82 56 -002 109103108 -9-10-10 017 117 04 09 -11.3 -11.7 28.80 6 16 92 67 000 111102107 -9 -9 -9 010 118 04 10 -8.8 -9.7 28.82 9 16 77 52 -001 102107106 -9 -9 -9 017 119 04 11 -7.7 -8.8 28.83 11 17 64 39 -002 98108107 -8 -9 -9 038 120 04 12 -7.6 -8.9 28.85 12 15 63 38 -001 96108 95 -8 -9-10 020 * NOTES on units: VVV (vertical velocity) is given as tenths of a microbar per second at 700 hPa, with positive values indicating upward motion; ACCUM (accumulated precipitation, past 3h) is given as hundredths of a millimeter; RH1, RH2, and RH3 are the % RH at the surface, 1000', and 3000', respectively; T1, T2, and T3 are the temperatures at 500', 1000', and 1500', respectively. Gust is estimated according to the NCEP HRRR gust algorithm.