Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-10-12/00 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 12 00 -27.4 -30.5 29.18 5 8 246 221 000 100 94 36 -20-19-18 000 1 12 01 -29.9 -30.5 29.19 5 7 232 207 000 132100 38 -20-20-18 000 2 12 02 -32.5 -32.9 29.21 3 5 238 213 -001 136 98 38 -20-20-18 000 3 12 03 -32.9 -33.1 29.23 3 3 254 229 000 137 93 41 -21-20-18 000 4 12 04 -34.6 -35.7 29.24 2 3 153 128 001 127106 45 -22-21-20 000 5 12 05 -34.8 -36.1 29.27 1 6 90 65 001 124 93 46 -21-20-20 000 6 12 06 -36.1 -37.7 29.28 3 3 159 133 001 122 91 46 -22-20-20 000 7 12 07 -36.2 -37.8 29.29 4 4 130 104 000 124 88 45 -22-19-20 000 8 12 08 -35.3 -36.7 29.28 2 2 101 76 000 124 65 47 -21-19-19 000 9 12 09 -35.0 -36.5 29.28 0 1 356 330 000 123 62 49 -21-19-19 000 10 12 10 -33.9 -35.7 29.30 3 4 289 264 000 120 57 49 -21-19-20 000 11 12 11 -31.8 -32.9 29.31 2 6 276 250 -001 125 44 47 -21-19-20 000 12 12 12 -29.4 -29.6 29.30 1 6 292 266 -001 133 42 47 -21-19-19 000 13 12 13 -25.9 -26.1 29.29 2 4 311 285 -002 129 43 52 -21-19-19 000 14 12 14 -23.1 -24.1 29.30 2 3 330 304 -001 116 47 86 -21-19-19 000 15 12 15 -21.7 -23.7 29.29 3 5 8 342 000 103 71102 -21-20-20 002 16 12 16 -20.7 -23.1 29.29 3 5 45 20 -004 98100104 -20-20-20 016 17 12 17 -20.3 -22.7 29.28 5 5 81 55 -008 98 99101 -20-21-20 031 18 12 18 -20.5 -22.9 29.25 7 8 81 55 -006 98101103 -20-20-21 034 19 12 19 -20.6 -23.1 29.25 9 12 84 59 -002 98101103 -20-20-21 024 20 12 20 -20.8 -23.2 29.24 10 16 85 60 -001 99100103 -19-19-20 013 21 12 21 -21.3 -23.6 29.25 10 16 91 65 -001 100 97102 -20-20-20 008 22 12 22 -22.0 -24.3 29.26 9 13 100 74 001 102 97 98 -20-21-21 007 23 12 23 -24.4 -26.2 29.28 7 11 113 87 000 109 96100 -21-20-20 004 24 13 00 -27.1 -28.3 29.30 6 9 130 105 000 121 99 99 -21-20-20 002 25 13 01 -29.2 -30.0 29.32 7 9 150 124 002 131100101 -23-21-20 000 26 13 02 -29.5 -30.2 29.36 8 9 161 136 001 132 93105 -23-19-19 000 27 13 03 -29.6 -30.4 29.38 7 11 149 123 000 131 96 99 -21-19-19 000 28 13 04 -30.7 -31.6 29.41 7 10 171 145 001 133101 97 -20-19-20 000 29 13 05 -30.3 -31.0 29.43 7 9 183 158 001 132101 95 -19-19-19 000 30 13 06 -30.1 -30.6 29.46 5 7 184 159 003 132104 93 -18-19-19 000 31 13 07 -32.1 -33.0 29.50 6 7 203 177 002 136 97 88 -17-18-17 000 32 13 08 -30.8 -31.8 29.53 6 9 188 163 003 134 89 83 -17-16-16 000 33 13 09 -27.8 -28.6 29.57 6 6 194 168 003 129 77 80 -15-15-16 000 34 13 10 -26.0 -26.7 29.60 6 6 199 174 004 128 69 75 -14-15-15 000 35 13 11 -24.4 -25.1 29.63 6 7 203 177 004 126 65 72 -14-14-15 000 36 13 12 -22.2 -23.5 29.65 6 8 210 185 001 115 61 70 -14-14-15 000 37 13 13 -20.5 -23.1 29.67 6 10 212 186 002 95 61 70 -14-14-14 000 38 13 14 -19.3 -22.4 29.69 6 12 213 187 000 88 60 67 -13-13-14 000 39 13 15 -18.7 -22.2 29.70 6 11 218 192 003 83 58 63 -12-13-14 000 40 13 16 -18.4 -22.0 29.70 6 10 229 204 001 80 57 60 -12-13-13 000 41 13 17 -18.6 -22.1 29.70 7 11 242 217 001 83 53 54 -11-12-12 000 42 13 18 -19.3 -20.9 29.70 8 13 249 224 002 106 51 49 -11-12-12 000 43 13 19 -19.9 -20.4 29.70 8 15 253 228 002 120 51 48 -11-12-12 000 44 13 20 -19.5 -20.0 29.69 9 21 251 226 000 120 60 47 -12-12-12 000 45 13 21 -17.6 -18.1 29.67 10 21 242 216 000 117 44 42 -12-12-11 000 46 13 22 -17.4 -17.8 29.66 11 23 243 217 001 117 43 37 -12-11-11 000 47 13 23 -18.1 -18.5 29.65 11 23 246 221 003 118 41 30 -13-11-11 000 48 14 00 -19.1 -19.6 29.65 10 23 250 225 005 119 42 25 -13-11-11 000 49 14 01 -19.1 -19.6 29.64 10 24 247 221 002 119 46 22 -14-12-11 000 50 14 02 -18.3 -18.7 29.61 11 25 242 216 001 118 46 18 -15-12-11 000 51 14 03 -19.1 -19.6 29.60 10 24 244 218 002 119 42 16 -15-12-10 000 52 14 04 -19.9 -20.4 29.58 9 22 241 215 003 120 37 15 -14-11-10 000 53 14 05 -20.7 -21.3 29.56 8 16 222 196 000 121 34 17 -12-11-10 000 54 14 06 -22.7 -23.3 29.55 8 15 219 193 000 124 33 21 -12-10-10 000 55 14 07 -23.0 -23.7 29.52 8 15 224 199 -002 124 31 21 -12-10 -9 000 56 14 08 -22.7 -23.2 29.51 8 16 238 212 -007 124 32 14 -12-11-10 000 57 14 09 -21.7 -22.2 29.50 8 16 232 206 -005 123 32 11 -11-11-11 000 58 14 10 -20.6 -21.4 29.50 8 17 216 191 -003 119 38 13 -10-10-10 000 59 14 11 -19.0 -19.5 29.49 8 17 220 194 000 120 38 13 -10-10-10 000 60 14 12 -18.1 -18.5 29.47 7 14 227 201 000 119 39 17 -9-10 -9 000 61 14 13 -16.1 -17.8 29.45 7 13 229 204 -003 101 40 21 -8 -9 -9 000 62 14 14 -14.3 -17.1 29.44 7 13 237 211 000 88 43 26 -8 -9 -9 000 63 14 15 -13.5 -17.2 29.42 8 16 226 200 000 78 32 40 -8 -8 -9 000 64 14 16 -13.4 -16.5 29.40 8 16 223 198 000 84 31 40 -8 -7 -8 000 65 14 17 -13.4 -16.1 29.38 8 15 213 187 -006 87 49 40 -7 -8 -8 000 66 14 18 -14.5 -16.3 29.38 8 10 206 181 -004 97 36 40 -7 -7 -8 000 67 14 19 -15.4 -17.1 29.37 8 8 206 180 003 99 33 38 -7 -7 -8 000 68 14 20 -16.9 -18.1 29.35 8 10 197 172 010 106 30 35 -7 -7 -7 000 69 14 21 -16.7 -20.1 29.34 9 11 179 154 012 80 29 34 -7 -7 -7 000 70 14 22 -17.7 -20.1 29.33 9 10 190 165 016 91 27 33 -8 -7 -7 000 71 14 23 -19.0 -20.7 29.32 8 8 199 173 015 101 25 33 -8 -7 -7 000 72 15 00 -19.9 -21.4 29.31 8 8 198 172 009 103 25 33 -8 -7 -7 000 73 15 01 -20.8 -22.1 29.30 8 8 187 161 017 107 20 31 -8 -7 -7 000 74 15 02 -20.5 -22.8 29.28 8 9 172 147 020 95 17 25 -8 -7 -7 000 75 15 03 -19.9 -24.1 29.27 8 8 174 149 015 74 16 23 -8 -7 -7 000 76 15 04 -19.4 -24.2 29.26 8 10 173 147 014 68 16 15 -8 -7 -7 000 77 15 05 -21.5 -25.0 29.25 9 12 180 154 011 82 17 16 -9 -7 -7 000 78 15 06 -21.0 -25.2 29.23 9 12 170 144 007 75 13 14 -8 -7 -7 000 79 15 07 -19.6 -25.2 29.21 9 11 170 144 008 62 14 7 -8 -7 -7 000 80 15 08 -19.2 -25.0 29.20 8 10 170 145 011 61 12 8 -7 -7 -6 000 81 15 09 -20.5 -24.8 29.18 7 10 202 176 013 75 13 7 -8 -7 -7 000 82 15 10 -20.2 -23.8 29.17 7 8 203 177 013 82 13 7 -9 -7 -7 000 83 15 11 -18.9 -23.0 29.16 6 8 185 160 010 76 14 8 -7 -7 -8 000 84 15 12 -17.4 -22.3 29.15 6 6 178 153 009 67 19 6 -8 -9 -8 000 85 15 13 -16.3 -21.1 29.13 6 10 180 154 008 66 22 5 -8 -9 -9 000 86 15 14 -13.6 -20.7 29.11 5 17 140 115 006 51 19 5 -8 -8 -9 000 87 15 15 -14.6 -19.9 29.09 5 9 116 91 004 63 19 4 -7 -8 -9 000 88 15 16 -15.2 -19.8 29.09 2 6 37 11 002 76 26 6 -8 -9-10 000 89 15 17 -16.1 -20.6 29.09 5 7 6 341 003 72 26 7 -9 -9-10 000 90 15 18 -15.4 -21.5 29.10 5 11 15 350 001 61 35 11 -11-10-11 000 91 15 19 -16.8 -22.3 29.11 6 13 35 10 000 65 46 17 -12-12-11 000 92 15 20 -19.0 -22.5 29.12 8 23 90 64 -003 81 47 16 -12-12-14 000 93 15 21 -20.5 -21.9 29.13 11 17 89 63 -002 109 48 14 -14-15-14 000 94 15 22 -23.4 -24.2 29.15 8 17 90 64 002 122 50 19 -14-15-15 000 95 15 23 -25.5 -26.1 29.16 10 18 100 74 000 127 49 17 -15-15-16 000 96 16 00 -26.1 -26.7 29.16 10 26 84 59 001 128 63 18 -15-15-17 000 97 16 01 -26.3 -26.9 29.16 9 26 73 48 001 128 53 24 -14-15-16 000 98 16 02 -27.4 -28.1 29.17 8 27 93 68 000 129 54 34 -15-15-16 000 99 16 03 -28.2 -29.0 29.18 7 24 81 55 000 130 58 42 -15-15-16 000 100 16 04 -27.3 -27.9 29.19 10 32 76 51 -002 129 64 48 -16-16-16 000 101 16 05 -25.3 -25.9 29.20 12 34 70 44 000 126 75 46 -17-16-16 000 102 16 06 -25.4 -25.9 29.23 12 25 57 32 -001 127 82 54 -19-17-16 000 103 16 07 -25.8 -26.3 29.24 10 21 63 38 000 128 81 54 -19-17-17 000 104 16 08 -25.6 -26.2 29.26 9 23 70 44 000 127 98 57 -18-18-18 000 105 16 09 -22.0 -24.7 29.27 11 28 69 44 000 96 92 57 -17-17-18 000 106 16 10 -20.2 -23.2 29.28 13 22 81 56 000 92117 63 -16-17-18 000 107 16 11 -18.7 -21.6 29.30 14 22 74 48 000 92 94 67 -17-16-17 000 108 16 12 -18.2 -21.5 29.31 15 23 72 46 000 87 83 85 -17-16-17 000 109 16 13 -17.1 -20.6 29.32 14 23 71 46 000 85 98107 -16-17-17 000 110 16 14 -15.8 -19.4 29.33 13 21 72 46 000 83 84118 -16-16-16 000 111 16 15 -14.9 -18.6 29.34 13 20 73 47 000 81 85118 -15-15-16 000 112 16 16 -14.2 -18.0 29.36 12 18 68 43 000 80 85118 -15-15-16 000 113 16 17 -14.0 -17.7 29.38 10 16 67 41 000 79 89108 -14-15-16 000 114 16 18 -15.4 -18.4 29.39 7 13 76 50 001 86 78 94 -14-15-16 000 115 16 19 -16.4 -18.6 29.41 6 9 94 69 001 95 65 95 -14-14-15 000 116 16 20 -19.6 -20.1 29.43 5 7 105 80 000 119 66 87 -14-14-15 000 117 16 21 -21.9 -22.5 29.44 4 6 103 78 000 122 63 83 -14-14-15 000 118 16 22 -25.3 -26.2 29.46 3 5 126 101 000 127 64 94 -14-14-15 000 119 16 23 -26.7 -27.4 29.47 4 4 147 121 000 128 69 95 -14-14-15 000 120 17 00 -27.7 -28.4 29.49 4 5 146 120 000 130 76 90 -14-15-15 000 * 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.