Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-27/12 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 27 12 -31.6 -35.6 29.21 1 1 334 309 000 85 51 27 -25-20-17 000 1 27 13 -29.5 -33.6 29.22 1 1 350 325 000 89 50 27 -24-20-17 000 2 27 14 -29.7 -33.5 29.21 2 2 7 341 000 91 49 27 -23-20-17 000 3 27 15 -30.1 -33.7 29.22 3 3 32 6 002 93 49 25 -23-20-17 000 4 27 16 -30.4 -33.7 29.21 3 3 43 17 001 98 55 22 -23-20-17 000 5 27 17 -30.6 -33.6 29.21 3 4 299 274 000 100 62 20 -23-20-16 000 6 27 18 -31.8 -33.9 29.21 5 8 271 245 002 112 67 23 -22-19-15 000 7 27 19 -32.2 -32.9 29.21 2 5 287 261 000 128 78 24 -21-18-16 000 8 27 20 -33.7 -33.9 29.18 3 6 297 272 -001 137 55 27 -21-17-15 000 9 27 21 -36.2 -37.9 29.19 1 4 298 273 000 120 69 28 -21-18-15 000 10 27 22 -35.7 -38.1 29.20 2 2 40 15 000 116 54 31 -21-18-15 000 11 27 23 -35.4 -37.4 29.23 3 4 82 56 000 118 50 34 -21-17-15 000 12 28 00 -38.8 -40.9 29.20 5 6 99 74 000 124 41 31 -20-17-16 000 13 28 01 -40.7 -43.0 29.21 5 8 97 72 000 124 43 32 -23-18-17 000 14 28 02 -41.5 -43.7 29.22 4 8 88 62 002 124 45 25 -23-17-17 000 15 28 03 -42.0 -44.2 29.23 3 6 103 77 000 124 54 31 -22-19-18 000 16 28 04 -43.0 -45.4 29.25 5 6 137 112 000 124 64 30 -24-20-19 000 17 28 05 -42.1 -44.3 29.24 4 6 125 99 -001 124 64 35 -23-20-19 000 18 28 06 -41.5 -43.5 29.23 4 7 112 86 000 124 56 36 -23-20-19 000 19 28 07 -42.1 -44.3 29.24 5 9 112 86 000 124 65 34 -23-20-19 000 20 28 08 -42.3 -44.6 29.24 5 9 108 82 000 124 50 34 -22-20-19 000 21 28 09 -42.0 -44.4 29.24 4 9 114 89 001 123 52 36 -21-20-19 000 22 28 10 -40.7 -43.0 29.24 3 8 95 69 001 123 55 41 -21-19-19 000 23 28 11 -39.4 -41.4 29.25 2 7 92 66 001 121 55 45 -21-19-18 000 24 28 12 -37.9 -40.2 29.26 0 5 110 84 000 114 51 45 -21-19-18 000 25 28 13 -36.1 -38.9 29.27 1 3 213 188 001 108 46 41 -20-18-18 000 26 28 14 -34.1 -36.9 29.27 2 2 214 188 001 108 43 36 -20-18-18 000 27 28 15 -31.7 -33.7 29.28 2 2 191 166 000 114 41 33 -20-18-18 000 28 28 16 -31.5 -32.7 29.29 2 2 192 167 000 122 39 29 -19-18-18 000 29 28 17 -32.5 -33.7 29.29 1 1 188 163 000 124 40 29 -19-17-18 000 30 28 18 -33.6 -34.8 29.30 1 1 58 33 000 124 43 30 -19-17-17 000 31 28 19 -34.2 -35.4 29.31 1 1 33 7 000 124 44 30 -18-17-16 000 32 28 20 -35.1 -36.2 29.32 2 2 27 1 000 124 39 30 -18-16-16 000 33 28 21 -36.0 -37.2 29.32 1 1 19 353 000 124 34 28 -19-16-16 000 34 28 22 -36.7 -38.0 29.32 1 1 37 11 001 124 39 31 -18-17-16 000 35 28 23 -39.0 -40.8 29.33 4 4 62 36 000 124 45 34 -18-17-16 000 36 29 00 -38.9 -40.8 29.34 4 6 63 38 000 124 50 35 -19-18-17 000 37 29 01 -40.5 -42.8 29.34 4 6 79 53 000 121 51 40 -20-18-17 000 38 29 02 -41.1 -44.7 29.35 5 7 87 61 -002 101 54 39 -21-19-18 000 39 29 03 -41.4 -45.0 29.34 5 8 79 54 000 100 66 39 -22-19-18 000 40 29 04 -41.6 -45.3 29.34 3 7 73 48 000 100 80 42 -23-19-19 000 41 29 05 -40.9 -44.6 29.34 3 7 73 47 -001 100 71 43 -23-19-19 000 42 29 06 -39.2 -42.9 29.33 3 7 89 64 000 100 66 45 -24-19-19 000 43 29 07 -38.9 -42.6 29.33 3 6 108 82 002 100 80 45 -25-20-20 001 44 29 08 -39.3 -42.9 29.32 3 6 102 76 003 100 92 42 -26-21-20 001 45 29 09 -39.1 -42.8 29.31 3 6 103 78 002 99107 34 -28-22-21 000 46 29 10 -38.6 -42.2 29.31 4 9 109 83 003 100118 22 -28-23-22 000 47 29 11 -37.3 -40.4 29.32 4 10 109 84 003 105126 18 -26-24-22 001 48 29 12 -37.8 -41.0 29.33 4 11 113 88 003 104123 15 -26-24-22 000 49 29 13 -36.4 -39.6 29.33 5 11 115 90 004 104115 13 -25-25-23 000 50 29 14 -35.1 -38.1 29.33 4 10 98 73 005 105 98 14 -25-24-23 000 51 29 15 -34.3 -37.0 29.34 4 10 92 66 005 109 94 16 -25-24-23 000 52 29 16 -34.2 -36.6 29.34 4 11 104 79 002 112 81 18 -25-24-23 000 53 29 17 -34.6 -36.8 29.34 5 12 98 72 000 117 67 20 -24-24-23 000 54 29 18 -35.1 -36.9 29.34 6 12 99 73 000 124 82 19 -24-23-23 000 55 29 19 -36.0 -37.8 29.33 7 12 98 72 000 124 95 20 -25-23-23 000 56 29 20 -37.4 -39.3 29.33 7 12 87 61 -002 124 91 21 -25-24-23 000 57 29 21 -38.8 -40.8 29.34 6 14 84 58 -002 124 95 25 -25-24-23 000 58 29 22 -39.4 -41.5 29.34 6 15 89 64 -003 124 93 31 -27-24-22 000 59 29 23 -39.4 -41.4 29.35 6 16 100 75 -001 124106 39 -27-25-21 000 60 30 00 -40.2 -42.3 29.34 6 14 108 83 -003 125107 44 -26-25-22 000 61 30 01 -41.2 -43.4 29.33 7 14 109 83 000 124 94 43 -26-25-22 000 62 30 02 -41.5 -43.7 29.32 7 19 97 71 -002 124 84 33 -25-25-22 000 63 30 03 -40.2 -42.1 29.30 8 22 87 61 -001 125 74 27 -26-25-23 000 64 30 04 -38.4 -40.1 29.30 9 22 92 67 000 126 68 28 -26-24-24 000 65 30 05 -39.2 -41.0 29.30 9 21 96 71 000 127 68 29 -26-24-24 000 66 30 06 -39.6 -41.4 29.30 9 21 96 70 001 127 82 30 -26-24-24 000 67 30 07 -39.6 -41.3 29.29 10 21 99 74 001 129 82 29 -26-24-24 000 68 30 08 -39.1 -40.7 29.28 9 22 98 72 001 129 82 26 -26-24-24 000 69 30 09 -38.0 -39.9 29.28 9 24 90 65 001 124 90 26 -26-24-24 000 70 30 10 -36.9 -38.7 29.28 9 23 85 59 000 124 94 22 -27-25-24 000 71 30 11 -36.0 -38.0 29.27 8 23 84 58 000 120 77 24 -26-26-25 000 72 30 12 -34.2 -37.0 29.27 10 25 77 51 000 107 66 24 -25-26-25 000 73 30 13 -31.3 -34.9 29.26 13 28 76 50 000 94 67 22 -25-25-25 000 74 30 14 -30.7 -33.8 29.26 12 22 74 48 000 99 62 30 -25-24-25 000 75 30 15 -30.9 -33.3 29.26 13 25 78 52 000 108 74 41 -25-24-25 000 76 30 16 -30.7 -33.3 29.26 13 23 76 51 -001 106105 38 -25-24-25 000 77 30 17 -30.3 -34.2 29.25 13 27 75 49 -002 91 64 32 -24-24-25 000 78 30 18 -31.8 -34.9 29.25 12 24 84 58 -001 100 69 27 -25-24-24 000 79 30 19 -31.6 -33.6 29.25 13 30 78 52 000 115 82 31 -25-24-24 000 80 30 20 -28.2 -31.6 29.24 18 35 70 45 -001 95 67 36 -23-23-25 000 81 30 21 -26.4 -30.8 29.24 19 36 66 40 -002 83 90 49 -23-24-24 000 82 30 22 -25.9 -30.5 29.25 20 36 71 46 -002 80 93 54 -24-24-24 000 83 30 23 -25.1 -30.0 29.25 22 36 76 50 -001 77 88 55 -24-23-23 000 84 01 00 -24.6 -29.7 29.27 22 38 74 48 -001 75 66 54 -23-23-23 000 85 01 01 -24.5 -29.4 29.26 19 39 75 50 000 76 58 56 -21-22-23 000 86 01 02 -24.1 -28.5 29.27 22 38 72 47 000 81 93 57 -22-22-23 000 87 01 03 -23.2 -27.7 29.26 23 39 73 48 000 79 90 54 -21-22-22 000 88 01 04 -22.3 -27.1 29.26 23 40 71 46 000 77 58 54 -20-21-22 000 89 01 05 -20.9 -26.2 29.26 26 43 73 47 000 72 88 46 -20-21-21 000 90 01 06 -20.3 -25.5 29.26 26 43 75 49 -002 72 61 45 -19-20-21 000 91 01 07 -19.4 -24.2 29.25 24 41 76 50 001 75 58 47 -18-18-20 000 92 01 08 -17.7 -23.0 29.24 28 45 75 49 -002 69 55 40 -18-18-20 000 93 01 09 -17.4 -22.9 29.25 30 47 68 42 -001 68 63 51 -18-19-20 000 94 01 10 -15.9 -20.8 29.25 29 44 72 46 -003 72 64 75 -16-17-19 000 95 01 11 -15.8 -20.9 29.25 32 45 67 42 -003 70 76 95 -16-18-19 000 96 01 12 -15.2 -20.1 29.25 31 44 66 41 -003 72 78 96 -16-17-19 001 97 01 13 -14.9 -19.6 29.25 31 44 66 40 -003 72 78 93 -16-17-18 002 98 01 14 -14.5 -19.1 29.25 31 44 67 41 -003 73 80 90 -15-17-18 002 99 01 15 -13.9 -18.0 29.24 31 43 67 41 -001 76 84 92 -15-16-17 003 100 01 16 -13.1 -17.1 29.24 30 43 67 41 000 78 85 90 -14-15-17 003 101 01 17 -12.8 -16.5 29.23 30 42 67 41 000 80 88 94 -13-15-16 004 102 01 18 -12.5 -15.9 29.23 29 42 68 42 -001 82 90100 -13-14-16 008 103 01 19 -12.4 -15.7 29.23 29 42 68 42 -001 83 91103 -13-14-16 013 104 01 20 -12.4 -15.5 29.23 29 42 68 42 -001 84 93103 -13-14-16 015 105 01 21 -12.4 -15.2 29.23 28 42 69 43 -001 87 95104 -13-14-16 016 106 01 22 -12.3 -14.9 29.23 28 41 71 45 000 88 97104 -13-14-15 017 107 01 23 -12.3 -14.7 29.23 28 41 71 46 000 90 99103 -13-14-15 018 108 02 00 -12.3 -14.7 29.22 27 40 71 46 000 91100103 -13-14-15 020 109 02 01 -12.4 -14.7 29.21 27 39 73 48 000 92101103 -13-14-15 018 110 02 02 -12.6 -14.8 29.21 26 39 76 50 000 92100104 -13-14-15 010 111 02 03 -12.6 -15.0 29.20 26 39 76 51 001 92 98103 -13-14-15 007 112 02 04 -12.7 -15.3 29.19 25 39 76 51 000 90 95103 -13-14-15 006 113 02 05 -13.1 -16.0 29.18 23 38 79 53 000 87 85103 -13-14-15 003 114 02 06 -13.9 -17.0 29.17 21 37 80 54 000 85 72 97 -12-13-14 000 115 02 07 -14.8 -18.0 29.17 20 35 79 54 000 85 71 73 -12-13-14 000 116 02 08 -16.2 -19.3 29.16 18 33 80 54 000 87 72 45 -12-13-14 000 117 02 09 -17.0 -20.3 29.15 16 31 80 54 000 86 70 31 -13-13-13 000 118 02 10 -17.0 -20.6 29.13 15 30 80 54 001 83 70 35 -13-13-13 000 119 02 11 -16.5 -20.4 29.12 14 28 80 54 001 81 69 40 -12-13-13 000 120 02 12 -16.1 -20.0 29.10 13 25 78 53 000 80 66 38 -12-12-13 000 * 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.