Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-10-16/00 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 16 00 -23.2 -27.7 29.04 10 15 77 52 000 78 60 32 -19-17-17 000 1 16 01 -26.2 -28.3 29.04 9 15 83 58 -001 107 60 39 -19-17-17 000 2 16 02 -28.1 -29.0 29.05 9 17 84 58 000 126 58 47 -18-17-17 000 3 16 03 -29.3 -30.2 29.05 9 28 89 64 001 129 60 50 -18-18-17 000 4 16 04 -29.7 -30.7 29.06 9 34 82 56 000 125 42 53 -18-18-19 000 5 16 05 -29.0 -30.2 29.07 11 34 75 49 000 123 40 59 -18-17-18 000 6 16 06 -28.6 -30.3 29.07 10 29 79 53 -001 114 37 59 -18-18-18 000 7 16 07 -26.9 -29.9 29.08 12 33 80 55 -001 96 57 53 -18-19-18 000 8 16 08 -25.1 -29.5 29.08 13 31 76 50 000 81 61 52 -18-19-18 000 9 16 09 -24.3 -28.7 29.11 11 29 72 46 000 79 57 64 -17-19-19 000 10 16 10 -23.6 -27.8 29.09 10 27 78 52 000 82 54 65 -17-18-19 000 11 16 11 -22.6 -26.7 29.12 10 28 79 54 000 82 53 58 -17-17-18 000 12 16 12 -21.6 -25.6 29.13 9 24 84 58 000 83 50 65 -17-17-18 000 13 16 13 -20.9 -24.7 29.15 8 25 89 63 000 84 49 86 -16-17-17 000 14 16 14 -19.8 -23.7 29.16 8 25 86 61 001 83 50 89 -16-16-17 000 15 16 15 -19.4 -22.9 29.18 7 21 86 61 000 84 50 97 -15-16-16 000 16 16 16 -19.9 -23.1 29.20 5 20 104 78 000 88 48 93 -14-15-16 000 17 16 17 -21.0 -24.0 29.21 5 14 133 107 001 91 48103 -14-15-16 000 18 16 18 -21.5 -24.3 29.22 6 11 138 113 000 94 51109 -14-14-15 000 19 16 19 -21.3 -23.5 29.26 5 9 149 123 000 101 45117 -14-14-15 000 20 16 20 -22.2 -23.8 29.27 6 8 164 139 001 111 46119 -14-14-14 000 21 16 21 -22.3 -23.3 29.28 6 8 170 144 000 118 47120 -13-13-14 000 22 16 22 -23.0 -23.7 29.31 6 8 170 144 -001 123 54119 -13-14-14 000 23 16 23 -22.5 -23.5 29.33 6 7 171 145 000 118 51118 -13-14-14 000 24 17 00 -24.7 -25.2 29.34 6 6 180 154 001 125 55105 -13-14-15 000 25 17 01 -26.9 -27.5 29.36 6 6 188 162 000 128 55 86 -13-14-15 000 26 17 02 -28.5 -29.2 29.38 5 5 188 162 000 130 56 84 -13-14-15 000 27 17 03 -29.1 -29.6 29.39 4 4 172 146 000 132 53 88 -14-14-15 000 28 17 04 -29.3 -29.6 29.39 2 2 168 143 000 132 52 89 -14-14-15 000 29 17 05 -30.6 -30.9 29.41 2 2 185 159 000 134 50 89 -15-14-15 000 30 17 06 -31.3 -31.5 29.43 3 3 191 166 001 135 52 99 -15-15-15 000 31 17 07 -31.3 -31.6 29.45 3 3 197 172 001 135 53 69 -16-15-15 000 32 17 08 -31.5 -32.2 29.46 3 3 197 171 002 135 55 80 -16-15-15 000 33 17 09 -30.8 -31.7 29.48 3 3 197 172 001 134 56 65 -16-15-15 000 34 17 10 -29.5 -30.2 29.49 3 3 217 191 001 133 54 60 -16-15-15 000 35 17 11 -28.0 -28.9 29.50 2 2 237 212 000 123 56 50 -16-15-15 000 36 17 12 -26.7 -28.2 29.51 2 2 245 219 001 114 57 52 -16-16-16 000 37 17 13 -25.4 -27.7 29.51 2 3 247 221 002 104 56 47 -16-16-16 000 38 17 14 -24.2 -26.7 29.51 3 5 251 226 002 100 54 43 -16-16-16 000 39 17 15 -23.0 -25.6 29.52 3 6 253 228 001 98 52 39 -15-15-16 000 40 17 16 -22.3 -24.8 29.52 4 7 244 218 001 98 54 36 -15-15-15 000 41 17 17 -22.0 -24.3 29.53 5 9 234 208 000 101 57 33 -15-15-15 000 42 17 18 -22.5 -23.8 29.53 6 9 234 208 000 114 60 28 -15-15-14 000 43 17 19 -23.7 -24.5 29.53 6 10 234 209 001 124 61 30 -15-14-14 000 44 17 20 -25.1 -26.0 29.52 6 11 239 213 000 126 60 33 -14-14-14 000 45 17 21 -26.4 -27.2 29.52 6 12 231 205 000 128 57 31 -13-13-14 000 46 17 22 -28.0 -28.9 29.52 6 10 226 200 000 130 54 26 -13-13-14 000 47 17 23 -30.0 -30.9 29.53 6 6 233 207 000 133 56 24 -13-13-13 000 48 18 00 -30.9 -31.9 29.53 6 6 238 213 001 134 57 25 -14-14-14 000 49 18 01 -31.4 -32.3 29.53 5 6 235 209 000 134 55 23 -14-13-13 000 50 18 02 -32.2 -33.1 29.52 5 6 239 214 001 135 53 20 -15-13-13 000 51 18 03 -32.4 -33.2 29.51 5 7 245 220 001 136 52 18 -15-13-13 000 52 18 04 -32.9 -33.8 29.51 5 8 249 223 000 136 50 17 -15-13-13 000 53 18 05 -32.1 -32.9 29.51 6 12 252 227 001 135 48 15 -16-14-13 000 54 18 06 -29.7 -30.5 29.49 5 12 240 214 -001 132 44 12 -16-14-13 000 55 18 07 -27.2 -28.1 29.49 5 12 245 219 000 129 42 11 -17-14-13 000 56 18 08 -23.9 -24.6 29.48 6 13 245 219 001 125 40 10 -17-14-13 000 57 18 09 -22.6 -23.2 29.48 7 13 244 218 003 124 34 9 -17-14-13 000 58 18 10 -22.5 -23.0 29.48 7 14 235 209 000 124 31 9 -17-14-13 000 59 18 11 -21.9 -22.4 29.48 7 16 231 205 000 123 29 10 -17-14-12 000 60 18 12 -18.1 -18.5 29.47 9 15 234 209 002 119 28 10 -16-13-12 000 61 18 13 -17.3 -18.4 29.46 10 18 239 213 000 109 27 10 -16-12-11 000 62 18 14 -16.2 -18.3 29.45 12 20 236 210 000 97 24 10 -15-11-10 000 63 18 15 -15.8 -18.1 29.44 12 20 234 209 001 94 19 8 -15-10 -9 000 64 18 16 -15.5 -17.7 29.43 12 21 234 209 003 96 16 8 -14 -9 -9 000 65 18 17 -15.4 -17.2 29.42 12 21 233 208 004 100 15 7 -13 -8 -9 000 66 18 18 -15.6 -16.9 29.42 12 22 232 207 003 105 19 8 -12 -8 -8 000 67 18 19 -16.0 -16.5 29.43 11 22 223 197 002 114 27 4 -10 -8 -8 000 68 18 20 -17.0 -17.5 29.43 11 20 220 194 005 117 26 4 -9 -9 -9 000 69 18 21 -19.1 -19.5 29.44 9 17 212 186 006 119 26 4 -10 -9 -9 000 70 18 22 -21.4 -22.0 29.45 8 14 207 181 007 122 25 4 -10-10 -9 000 71 18 23 -23.0 -23.6 29.45 8 13 208 183 004 124 24 4 -10-10 -9 000 72 19 00 -25.6 -26.3 29.45 7 13 202 176 004 128 20 4 -11-10 -9 000 73 19 01 -27.3 -28.1 29.45 6 9 192 167 002 129 18 5 -9 -9 -9 000 74 19 02 -27.8 -28.6 29.46 7 9 190 164 003 130 25 5 -9 -9-10 000 75 19 03 -27.0 -27.6 29.46 6 8 192 166 002 128 27 5 -10-10-10 000 76 19 04 -21.7 -24.2 29.46 5 8 165 139 003 95 18 5 -10-10 -9 000 77 19 05 -21.7 -25.2 29.47 5 7 176 151 004 85 13 4 -10 -9 -9 000 78 19 06 -22.6 -24.6 29.47 5 5 189 163 004 101 10 4 -10 -8 -9 000 79 19 07 -25.5 -26.0 29.48 7 7 193 168 002 126 11 5 -10 -9 -9 000 80 19 08 -25.0 -25.6 29.47 6 6 190 165 005 125 12 5 -10 -9 -9 000 81 19 09 -22.8 -24.4 29.48 6 6 181 156 004 108 13 5 -9 -9 -9 000 82 19 10 -20.8 -23.6 29.48 6 6 171 146 000 92 13 5 -9 -9 -9 000 83 19 11 -19.7 -22.9 29.48 5 5 176 151 004 88 12 5 -9 -8 -9 000 84 19 12 -18.9 -22.2 29.49 4 4 192 166 004 85 10 5 -8 -8 -9 000 85 19 13 -18.0 -21.2 29.49 4 4 208 182 004 85 10 6 -8 -8 -9 000 86 19 14 -17.1 -19.9 29.49 3 4 217 191 005 89 10 6 -8 -8 -9 000 87 19 15 -17.3 -19.4 29.50 3 7 241 216 004 98 10 7 -9 -8 -9 000 88 19 16 -17.4 -19.5 29.50 4 8 264 239 002 99 11 7 -8 -8 -8 000 89 19 17 -17.2 -19.9 29.51 6 8 259 233 000 90 14 8 -8 -8 -8 000 90 19 18 -17.5 -19.7 29.52 5 7 255 229 -002 96 16 8 -8 -8 -8 000 91 19 19 -18.4 -18.9 29.52 6 6 258 233 001 117 20 9 -8 -8 -8 000 92 19 20 -20.1 -20.3 29.52 1 3 166 141 001 121 8 10 -8 -7 -7 000 93 19 21 -23.9 -24.4 29.54 2 6 95 69 000 125 7 10 -8 -7 -7 000 94 19 22 -25.7 -26.2 29.56 3 8 80 55 001 127 9 11 -8 -7 -8 000 95 19 23 -27.2 -27.9 29.57 4 10 81 56 002 129 25 14 -9 -8 -8 000 96 20 00 -28.4 -29.3 29.58 5 11 83 57 000 131 32 17 -9 -9 -9 000 97 20 01 -29.3 -30.1 29.59 5 11 75 50 000 132 26 17 -10-10-10 000 98 20 02 -31.0 -31.5 29.60 6 9 96 70 000 134 37 18 -13-11-11 000 99 20 03 -28.8 -30.4 29.60 5 9 96 70 000 120 28 18 -15-12-11 000 100 20 04 -26.9 -28.5 29.59 6 19 104 79 -001 117 37 19 -15-12-11 000 101 20 05 -25.5 -27.4 29.59 7 23 93 68 -001 110 47 19 -15-13-12 000 102 20 06 -24.7 -27.3 29.58 8 23 101 75 000 100 37 17 -15-14-12 000 103 20 07 -25.6 -27.3 29.57 9 20 88 62 000 111 29 16 -15-14-13 000 104 20 08 -25.8 -27.8 29.57 12 18 79 53 000 108 32 16 -17-14-13 000 105 20 09 -25.1 -27.5 29.57 11 16 75 50 000 103 62 15 -18-17-14 000 106 20 10 -24.0 -26.5 29.56 10 14 75 50 -001 101 57 15 -18-17-16 000 107 20 11 -22.8 -25.3 29.56 9 15 81 55 -002 100 52 15 -18-17-16 000 108 20 12 -21.1 -23.7 29.54 12 19 85 59 -002 97 52 15 -18-16-15 000 109 20 13 -20.2 -22.6 29.52 13 20 76 50 -002 98 64 17 -19-16-15 000 110 20 14 -19.4 -22.2 29.50 14 21 72 47 -001 93 69 18 -19-17-14 000 111 20 15 -18.6 -21.4 29.48 14 21 73 47 -001 92 60 30 -19-16-14 000 112 20 16 -17.7 -21.3 29.46 16 23 77 51 -001 85 57 39 -19-16-14 000 113 20 17 -17.2 -20.8 29.45 17 25 67 42 000 84 60 32 -18-16-15 000 114 20 18 -17.6 -21.2 29.43 19 28 67 42 000 83 59 27 -18-17-15 000 115 20 19 -18.5 -21.8 29.41 17 29 72 46 -001 87 57 33 -18-16-15 000 116 20 20 -18.5 -22.5 29.38 18 30 70 45 -001 81 53 39 -17-16-15 000 117 20 21 -18.3 -22.0 29.36 18 30 69 44 000 84 53 50 -17-15-15 000 118 20 22 -17.9 -21.6 29.34 19 33 71 45 000 84 50 46 -17-16-15 000 119 20 23 -17.3 -21.4 29.32 22 35 73 47 -001 79 54 70 -16-16-15 000 120 21 00 -17.0 -21.1 29.30 22 35 73 47 000 79 65 81 -16-15-15 000 * 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.