Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-05-03/12 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 03 12 -36.8 -40.6 29.59 0 0 163 137 000 100100 55 -31-29-27 000 1 03 13 -37.9 -39.6 29.59 3 3 77 51 000 119100 47 -32-29-27 000 2 03 14 -41.3 -43.3 29.61 5 5 58 32 000 124102 39 -32-29-27 000 3 03 15 -43.4 -45.7 29.62 6 7 54 28 000 124104 37 -33-30-28 000 4 03 16 -44.9 -47.4 29.63 5 9 68 42 000 124107 39 -33-30-28 000 5 03 17 -45.9 -48.4 29.62 5 8 88 63 000 124107 40 -33-30-28 000 6 03 18 -47.0 -49.6 29.61 5 6 101 76 000 124107 41 -33-30-28 000 7 03 19 -47.9 -50.6 29.62 4 5 100 75 000 123107 44 -32-30-28 000 8 03 20 -48.0 -50.5 29.64 4 5 92 67 000 124106 45 -32-30-28 000 9 03 21 -48.7 -51.4 29.63 5 7 83 58 000 124107 43 -33-30-28 000 10 03 22 -49.1 -51.7 29.62 5 8 95 69 000 124108 45 -33-31-29 000 11 03 23 -49.5 -52.0 29.64 5 9 101 76 000 124105 46 -33-31-29 000 12 04 00 -49.9 -52.3 29.64 5 10 103 77 000 124 96 45 -33-31-29 000 13 04 01 -50.3 -52.6 29.64 5 9 112 86 000 124 90 44 -33-31-29 000 14 04 02 -50.3 -52.5 29.64 4 9 117 91 000 124 91 44 -32-30-29 000 15 04 03 -50.4 -52.6 29.63 5 9 120 94 001 124 90 46 -33-30-28 000 16 04 04 -50.5 -52.7 29.63 5 8 120 95 001 124 95 49 -32-30-28 000 17 04 05 -50.3 -52.4 29.63 5 8 122 96 001 124 96 49 -32-30-29 000 18 04 06 -49.6 -51.7 29.62 5 9 125 100 000 124 87 46 -31-30-29 000 19 04 07 -48.2 -49.9 29.62 4 8 134 108 001 129 91 45 -31-30-29 000 20 04 08 -46.6 -48.4 29.61 4 7 150 124 002 127 91 46 -30-30-28 000 21 04 09 -46.1 -47.8 29.60 5 8 165 139 002 130 92 40 -30-30-28 000 22 04 10 -45.6 -47.2 29.59 6 7 176 150 001 132 92 40 -29-29-28 000 23 04 11 -45.2 -46.8 29.58 6 6 179 153 001 131 86 40 -28-29-28 000 24 04 12 -44.9 -46.5 29.57 5 5 187 161 001 130 79 40 -27-28-28 000 25 04 13 -44.6 -46.2 29.54 5 5 194 169 001 129 73 40 -27-28-28 000 26 04 14 -44.9 -46.7 29.52 5 5 204 178 002 127 69 38 -26-27-27 000 27 04 15 -45.4 -47.2 29.50 6 7 209 183 003 129 66 35 -26-27-27 000 28 04 16 -44.4 -46.1 29.47 6 7 207 182 003 129 61 31 -26-26-26 000 29 04 17 -44.4 -46.1 29.43 6 8 210 184 003 130 50 26 -26-25-25 000 30 04 18 -43.7 -45.4 29.41 7 9 207 181 001 129 43 24 -25-24-24 000 31 04 19 -42.8 -44.5 29.38 8 11 209 184 001 128 40 23 -25-24-23 000 32 04 20 -42.4 -44.2 29.35 9 11 214 188 003 127 37 21 -24-23-22 000 33 04 21 -41.8 -43.6 29.30 10 13 217 191 002 127 29 20 -23-22-21 000 34 04 22 -41.4 -44.3 29.26 9 14 218 193 002 110 29 18 -22-20-20 000 35 04 23 -41.2 -44.0 29.22 9 14 219 193 003 110 27 18 -22-20-20 000 36 05 00 -40.8 -43.1 29.19 9 14 219 194 003 117 24 17 -21-19-19 000 37 05 01 -40.2 -43.0 29.15 10 14 220 195 002 111 23 16 -20-19-19 000 38 05 02 -39.3 -41.2 29.11 10 14 221 195 003 122 26 15 -20-18-18 000 39 05 03 -38.1 -38.7 29.07 10 15 223 197 003 143 28 14 -18-18-17 000 40 05 04 -37.0 -37.5 29.04 11 16 223 198 003 141 28 13 -18-17-17 000 41 05 05 -36.0 -36.5 28.99 11 16 225 199 003 140 25 12 -17-16-16 000 42 05 06 -35.9 -36.5 28.95 10 16 224 199 003 139 25 12 -16-16-16 000 43 05 07 -36.1 -36.6 28.92 9 15 224 198 003 139 28 14 -16-16-15 000 44 05 08 -35.6 -36.1 28.89 10 14 225 199 001 138 31 16 -17-16-15 000 45 05 09 -35.3 -35.8 28.87 10 13 226 200 000 138 30 19 -17-15-14 000 46 05 10 -35.6 -36.1 28.85 9 13 223 198 001 138 27 26 -17-14-14 000 47 05 11 -36.1 -36.6 28.83 8 12 218 192 002 139 25 26 -17-14-14 000 48 05 12 -36.7 -37.3 28.81 8 9 211 185 003 140 23 37 -15-14-14 000 49 05 13 -37.3 -37.9 28.80 7 7 205 179 000 141 22 37 -15-14-15 000 50 05 14 -36.9 -37.6 28.79 8 8 209 183 001 139 29 30 -14-13-14 000 51 05 15 -35.8 -36.4 28.79 8 8 206 180 000 139 59 48 -13-13-14 000 52 05 16 -34.5 -35.1 28.79 7 8 194 169 -001 137 79114 -13-13-14 000 53 05 17 -32.7 -33.3 28.79 7 7 194 169 001 135 84109 -14-13-13 000 54 05 18 -31.5 -31.9 28.79 7 7 184 159 000 133 77 92 -14-13-13 000 55 05 19 -30.2 -30.6 28.79 7 8 173 147 002 131 79106 -13-13-12 000 56 05 20 -30.1 -30.5 28.80 6 11 146 120 001 132 80113 -14-13-13 000 57 05 21 -30.0 -30.6 28.81 6 19 125 100 001 132103107 -13-13-13 000 58 05 22 -31.6 -32.4 28.82 5 17 99 74 -001 135114102 -14-14-13 000 59 05 23 -30.9 -31.5 28.82 4 14 158 132 000 134 86105 -12-13-13 000 60 06 00 -30.4 -31.3 28.82 6 19 142 116 002 133102115 -12-13-14 000 61 06 01 -29.0 -30.1 28.82 5 19 131 105 002 123100118 -11-12-13 003 62 06 02 -27.9 -30.0 28.82 6 23 126 101 -001 111107110 -12-13-14 003 63 06 03 -27.4 -28.1 28.82 8 25 103 77 000 128106108 -13-13-14 004 64 06 04 -21.9 -22.4 28.82 9 27 84 58 -001 121101108 -12-12-13 009 65 06 05 -17.3 -17.7 28.82 10 26 76 51 -004 116101109 -12-12-13 018 66 06 06 -14.1 -15.0 28.83 13 27 76 50 -004 108101107 -12-12-13 030 67 06 07 -12.9 -14.1 28.85 15 28 73 47 -003 104 99105 -12-12-13 039 68 06 08 -12.5 -13.6 28.86 14 27 71 46 -003 104 98105 -11-12-13 028 69 06 09 -12.7 -13.5 28.87 13 25 72 46 000 107 97106 -11-12-12 017 70 06 10 -12.9 -13.5 28.88 11 24 72 46 001 109 97104 -11-11-12 011 71 06 11 -12.8 -13.5 28.89 9 21 78 52 000 108 99103 -11-11-12 014 72 06 12 -12.8 -13.6 28.91 8 19 86 61 000 107102102 -11-11-12 023 73 06 13 -12.6 -13.4 28.92 7 19 83 58 -001 107101102 -10-11-12 024 74 06 14 -12.9 -13.7 28.92 5 13 102 77 -001 108101101 -9-10-12 022 75 06 15 -13.0 -13.5 28.93 6 15 122 96 -002 112101 99 -9-10-11 013 76 06 16 -13.2 -13.7 28.93 5 10 126 100 -002 112100103 -9-10-11 008 77 06 17 -13.1 -13.8 28.93 5 8 144 118 -001 109101102 -9-10-11 021 78 06 18 -12.8 -13.8 28.93 4 7 157 132 000 105103101 -9-10-11 032 79 06 19 -13.3 -14.1 28.94 5 5 179 153 -001 109100100 -9-10-11 020 80 06 20 -14.1 -14.7 28.94 6 6 185 159 000 113102102 -9-10-11 009 81 06 21 -15.2 -15.8 28.94 6 8 199 173 000 114102109 -9-10-11 006 82 06 22 -16.2 -16.8 28.95 6 10 213 188 -001 116 92102 -9 -9-10 003 83 06 23 -16.6 -17.1 28.95 6 10 220 195 -001 116 85 98 -8 -9-10 002 84 07 00 -17.4 -18.0 28.95 6 10 223 198 001 117 82 90 -8 -9-10 002 85 07 01 -19.8 -20.3 28.95 7 11 233 207 000 120 80 88 -8 -9-10 000 86 07 02 -19.6 -20.1 28.95 7 15 227 201 001 120 77 85 -8 -8 -9 000 87 07 03 -20.2 -20.7 28.96 7 15 225 200 000 121 75 85 -8 -8 -9 000 88 07 04 -20.5 -21.0 28.97 7 15 230 204 000 121 71 83 -8 -7 -8 000 89 07 05 -20.5 -21.0 28.97 7 15 225 199 001 122 67 81 -8 -7 -8 000 90 07 06 -20.4 -20.9 28.98 6 13 226 200 001 121 60 80 -8 -7 -8 000 91 07 07 -20.0 -20.5 28.99 8 14 230 205 001 121 56 79 -8 -7 -8 000 92 07 08 -20.6 -21.0 29.01 7 13 229 203 000 122 60 76 -8 -8 -8 000 93 07 09 -21.5 -22.0 29.02 7 12 227 202 000 123 60 72 -9 -8 -8 000 94 07 10 -22.4 -22.8 29.04 7 11 224 199 001 124 56 67 -10 -8 -7 000 95 07 11 -23.6 -24.2 29.05 7 11 229 203 002 125 54 65 -9 -7 -8 000 96 07 12 -24.5 -25.0 29.05 7 12 231 205 003 126 58 62 -9 -8 -7 000 97 07 13 -25.0 -25.6 29.06 7 13 233 208 002 127 58 59 -8 -8 -8 000 98 07 14 -25.6 -26.2 29.06 6 13 237 211 000 128 51 61 -8 -7 -7 000 99 07 15 -26.4 -27.0 29.07 6 13 239 214 -001 129 49 63 -7 -7 -7 000 100 07 16 -27.0 -27.6 29.07 6 14 244 218 000 130 49 62 -7 -7 -7 000 101 07 17 -27.7 -28.3 29.08 5 13 246 220 000 131 50 60 -7 -7 -7 000 102 07 18 -28.1 -28.7 29.09 5 13 245 219 000 131 49 55 -7 -7 -7 000 103 07 19 -28.5 -29.2 29.10 4 11 244 218 000 132 48 52 -6 -6 -6 000 104 07 20 -29.5 -30.4 29.12 4 8 250 225 001 133 47 50 -7 -6 -6 000 105 07 21 -28.6 -29.4 29.13 6 10 240 215 005 131 50 48 -8 -7 -7 000 106 07 22 -27.0 -27.7 29.14 7 11 225 199 005 129 48 44 -8 -8 -7 000 107 07 23 -26.9 -27.7 29.15 6 8 204 178 002 128 42 44 -8 -7 -7 000 108 08 00 -29.9 -30.5 29.16 6 6 226 200 001 134 39 46 -8 -6 -7 000 109 08 01 -30.2 -31.0 29.17 6 6 243 218 -002 133 41 44 -9 -7 -7 000 110 08 02 -28.3 -29.2 29.17 6 11 220 194 000 130 43 44 -9 -7 -7 000 111 08 03 -28.4 -29.2 29.17 6 11 232 207 000 131 45 43 -9 -7 -7 000 112 08 04 -27.9 -28.8 29.16 6 10 229 204 001 130 50 42 -8 -7 -7 000 113 08 05 -28.0 -28.6 29.17 8 14 262 236 002 131 49 43 -9 -9 -8 000 114 08 06 -27.2 -27.9 29.17 6 14 260 234 000 130 49 40 -10 -9 -8 000 115 08 07 -26.6 -27.3 29.15 7 16 270 244 000 129 46 33 -10 -8 -8 000 116 08 08 -24.4 -25.0 29.14 8 18 263 237 002 126 43 18 -10 -8 -7 000 117 08 09 -22.0 -22.5 29.13 11 22 248 222 001 123 40 8 -11 -8 -7 000 118 08 10 -21.5 -21.9 29.12 13 23 244 219 001 123 34 4 -12 -8 -5 000 119 08 11 -18.3 -18.7 29.11 12 23 238 212 001 119 27 9 -12 -9 -6 000 120 08 12 -19.4 -19.8 29.10 12 22 242 216 005 120 31 10 -14-10 -7 000 * 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.