Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-06-09/00 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 09 00 -14.8 -16.6 28.91 4 5 77 52 000 95 97 99 -14-15-16 000 1 09 01 -15.9 -17.0 28.90 3 8 104 78 000 106106105 -14-15-16 007 2 09 02 -17.8 -18.3 28.91 6 12 118 92 -001 116106101 -14-15-16 006 3 09 03 -17.8 -18.3 28.91 9 19 88 62 000 118105103 -14-15-16 003 4 09 04 -17.9 -18.4 28.92 8 22 81 55 000 118102104 -14-15-16 002 5 09 05 -17.9 -18.5 28.93 7 17 76 51 000 118105104 -13-15-16 004 6 09 06 -18.2 -18.8 28.94 6 16 78 53 000 118105106 -14-15-16 004 7 09 07 -17.6 -18.1 28.94 6 15 87 61 000 117104105 -14-15-16 006 8 09 08 -17.1 -18.1 28.95 7 14 78 52 000 110103103 -14-15-16 010 9 09 09 -17.0 -18.1 28.95 6 13 79 53 000 110102102 -15-15-16 008 10 09 10 -16.5 -17.8 28.94 6 13 81 56 -001 108103103 -15-15-16 007 11 09 11 -15.7 -16.9 28.97 6 16 82 56 000 106102101 -14-15-16 008 12 09 12 -15.3 -16.5 28.99 6 17 76 51 000 107101101 -14-15-16 011 13 09 13 -15.8 -16.8 28.99 6 13 74 49 000 109104103 -13-15-16 008 14 09 14 -15.9 -16.8 29.01 6 15 85 60 000 111 99103 -14-15-16 006 15 09 15 -16.1 -17.2 29.03 6 14 80 55 000 110 98102 -14-15-16 007 16 09 16 -16.6 -17.6 29.04 6 14 84 58 000 112 96102 -14-15-16 006 17 09 17 -17.0 -17.8 29.06 6 13 76 50 000 114 98105 -14-15-16 005 18 09 18 -17.2 -18.1 29.07 5 12 80 54 -001 114 97106 -14-15-16 004 19 09 19 -17.2 -18.4 29.07 4 10 91 66 -001 110 98105 -14-15-16 006 20 09 20 -16.9 -18.3 29.08 4 8 100 74 000 106100105 -14-15-16 008 21 09 21 -17.0 -18.6 29.09 4 8 88 62 -001 105102104 -15-15-16 009 22 09 22 -17.4 -18.9 29.11 3 7 81 56 -001 105103103 -15-15-16 009 23 09 23 -17.8 -19.4 29.11 3 5 84 59 000 105103106 -15-15-16 008 24 10 00 -18.7 -20.2 29.11 4 4 100 75 000 107103105 -15-15-16 008 25 10 01 -19.3 -20.8 29.12 4 4 96 70 000 109102105 -15-15-16 006 26 10 02 -20.1 -21.3 29.13 4 4 92 67 000 112103105 -15-15-16 004 27 10 03 -21.1 -21.9 29.14 4 5 85 59 001 116105105 -15-16-16 004 28 10 04 -21.8 -21.9 29.13 3 6 77 51 000 122106105 -15-16-16 002 29 10 05 -23.1 -23.2 29.13 2 7 80 55 000 124105101 -15-16-17 001 30 10 06 -25.8 -26.0 29.13 2 5 133 108 000 128105100 -16-16-17 000 31 10 07 -27.7 -28.5 29.13 3 3 145 120 000 130105 97 -16-16-17 000 32 10 08 -27.4 -27.7 29.13 2 3 162 137 000 130105 96 -16-16-17 000 33 10 09 -27.5 -27.7 29.12 0 3 206 180 001 130104 92 -17-16-16 000 34 10 10 -29.1 -29.4 29.12 2 5 262 236 001 132101 90 -17-16-16 000 35 10 11 -30.6 -31.4 29.12 4 7 246 220 001 134 94 88 -16-16-16 000 36 10 12 -31.0 -31.7 29.11 5 9 247 222 001 135 96 83 -17-16-16 000 37 10 13 -31.4 -32.3 29.10 6 15 258 233 001 135 84 78 -16-15-15 000 38 10 14 -31.1 -31.8 29.09 7 17 264 239 001 135 72 70 -16-14-15 000 39 10 15 -29.0 -29.7 29.08 8 19 266 240 001 132 70 66 -15-14-14 000 40 10 16 -26.0 -26.6 29.08 9 21 258 233 002 128 78 64 -16-15-14 000 41 10 17 -23.8 -24.3 29.08 12 24 255 230 003 125 88 68 -17-15-15 000 42 10 18 -23.5 -24.0 29.08 12 25 249 223 004 125 89 74 -17-15-15 000 43 10 19 -23.0 -23.5 29.08 11 25 244 219 003 124 88 79 -17-15-15 000 44 10 20 -20.7 -21.2 29.07 13 24 243 218 002 122 71 79 -19-15-14 000 45 10 21 -21.7 -22.1 29.07 12 21 250 224 003 123 68 79 -19-14-14 000 46 10 22 -23.6 -24.2 29.07 8 21 255 230 003 125 68 79 -18-15-14 000 47 10 23 -25.2 -25.8 29.07 5 18 265 239 002 127 68 84 -18-15-15 000 48 11 00 -26.2 -26.7 29.08 4 13 268 243 002 129 72 89 -18-15-15 000 49 11 01 -25.1 -25.3 29.09 2 8 242 217 003 127 82 96 -20-16-15 000 50 11 02 -24.9 -25.1 29.09 1 3 137 112 001 127 88100 -20-17-15 000 51 11 03 -27.9 -29.8 29.10 6 8 112 87 000 110 90107 -21-17-15 000 52 11 04 -32.4 -35.3 29.12 8 9 98 72 000 103 88115 -22-18-15 000 53 11 05 -31.9 -34.2 29.12 10 13 90 65 000 110 83118 -22-18-16 000 54 11 06 -29.2 -31.5 29.13 11 16 83 57 001 109 76119 -24-19-16 000 55 11 07 -28.6 -31.7 29.14 13 18 82 56 000 98 76119 -24-20-17 000 56 11 08 -28.2 -31.4 29.14 13 18 80 55 000 96 83118 -25-21-18 000 57 11 09 -27.9 -31.0 29.14 13 19 76 51 001 97 83116 -25-21-19 000 58 11 10 -27.7 -30.9 29.15 12 19 74 48 000 97 83116 -25-22-20 001 59 11 11 -27.1 -30.3 29.16 11 19 74 48 001 96 83118 -26-22-20 002 60 11 12 -26.3 -29.7 29.16 11 20 74 49 000 94 83116 -26-21-20 002 61 11 13 -26.1 -29.4 29.16 10 20 73 48 001 93 78106 -26-22-21 002 62 11 14 -26.2 -29.4 29.16 10 20 75 49 000 94 80106 -25-21-20 003 63 11 15 -26.3 -29.5 29.17 9 18 75 49 000 95 81107 -25-21-20 003 64 11 16 -26.4 -29.5 29.17 9 20 75 50 000 96 82106 -25-22-20 003 65 11 17 -26.4 -29.5 29.16 9 20 73 48 -001 96 86104 -25-22-21 006 66 11 18 -26.2 -29.3 29.16 8 19 76 50 -001 96 91104 -25-22-21 010 67 11 19 -26.2 -29.3 29.16 8 15 81 56 000 97 95102 -24-22-21 013 68 11 20 -26.4 -29.4 29.16 9 12 81 55 000 97 98102 -24-21-21 017 69 11 21 -26.5 -29.6 29.15 8 12 80 54 -001 97 99102 -24-22-21 023 70 11 22 -26.5 -29.5 29.14 8 11 84 59 -002 97100103 -24-22-21 020 71 11 23 -26.5 -29.5 29.14 7 10 85 59 -001 98101104 -24-22-21 015 72 12 00 -28.1 -30.6 29.13 6 9 88 62 000 104102105 -24-23-22 006 73 12 01 -29.9 -31.6 29.13 6 10 90 64 000 117102104 -24-23-22 001 74 12 02 -31.3 -32.3 29.12 6 9 99 73 000 131102103 -24-23-22 000 75 12 03 -32.7 -33.6 29.12 6 8 112 87 000 136102103 -24-23-22 000 76 12 04 -33.6 -34.6 29.12 5 7 116 91 001 132100102 -24-23-21 000 77 12 05 -34.0 -35.3 29.12 4 5 135 110 002 125100 97 -25-23-22 000 78 12 06 -33.4 -34.6 29.12 2 2 168 142 001 124 97 91 -24-23-22 000 79 12 07 -33.8 -35.0 29.11 3 3 201 175 001 124 96 84 -24-23-22 000 80 12 08 -33.8 -34.9 29.11 3 3 231 205 001 124 96 78 -24-23-22 000 81 12 09 -35.1 -36.6 29.10 5 5 234 209 002 125 96 72 -24-23-22 000 82 12 10 -35.9 -37.6 29.10 6 8 245 220 001 124101 66 -24-23-22 000 83 12 11 -36.2 -38.0 29.09 6 11 251 226 000 124105 62 -24-23-22 000 84 12 12 -36.2 -38.0 29.08 6 12 259 233 001 124108 65 -25-23-23 000 85 12 13 -37.0 -39.0 29.07 5 12 260 234 001 122126 66 -24-25-23 000 86 12 14 -37.2 -39.3 29.05 5 10 260 234 000 121128 66 -24-25-23 000 87 12 15 -36.0 -38.3 29.04 4 9 261 236 001 117128 65 -23-25-23 000 88 12 16 -34.6 -36.8 29.02 2 8 286 261 001 114128 63 -23-25-22 000 89 12 17 -33.6 -34.9 29.00 4 10 276 250 001 126118 56 -24-24-21 000 90 12 18 -32.5 -33.2 28.98 6 13 258 233 001 135113 50 -24-24-21 000 91 12 19 -31.3 -32.0 28.97 7 14 260 234 002 133 99 49 -25-23-20 000 92 12 20 -30.9 -31.7 28.95 8 16 257 232 002 133 81 52 -25-22-20 000 93 12 21 -31.9 -32.6 28.93 8 14 257 232 002 134 70 50 -26-21-20 000 94 12 22 -32.7 -33.4 28.92 8 14 257 231 002 135 65 47 -25-21-19 000 95 12 23 -33.4 -34.1 28.91 8 15 256 231 001 137 64 47 -25-20-18 000 96 13 00 -33.9 -34.7 28.90 8 16 257 231 000 137 62 46 -24-20-18 000 97 13 01 -34.0 -34.8 28.88 8 16 258 233 000 138 62 44 -23-20-17 000 98 13 02 -34.3 -35.0 28.87 8 16 256 231 000 138 60 43 -22-19-17 000 99 13 03 -34.7 -35.5 28.86 8 16 258 233 000 139 56 41 -22-18-17 000 100 13 04 -35.3 -36.1 28.86 8 16 262 237 000 139 55 38 -22-18-17 000 101 13 05 -35.7 -37.2 28.86 6 14 265 239 001 130 58 37 -23-19-16 000 102 13 06 -35.7 -37.7 28.86 5 12 267 242 001 123 60 36 -25-19-16 000 103 13 07 -35.7 -38.1 28.87 4 9 266 240 001 117 63 34 -27-19-16 000 104 13 08 -35.6 -38.9 28.88 2 5 247 222 000 102 62 32 -27-19-16 001 105 13 09 -36.7 -40.1 28.89 1 2 166 140 002 101 62 31 -25-19-16 001 106 13 10 -39.7 -43.5 28.91 3 3 127 101 002 98 58 31 -25-19-17 000 107 13 11 -41.2 -45.3 28.92 3 3 122 96 001 95 50 33 -26-20-18 000 108 13 12 -41.7 -45.6 28.94 3 4 128 103 000 98 60 33 -27-20-18 000 109 13 13 -42.4 -46.6 28.96 2 4 104 78 000 95 73 35 -27-21-19 000 110 13 14 -42.7 -46.9 28.99 2 5 88 62 002 94 81 40 -27-22-20 000 111 13 15 -42.7 -46.7 29.02 3 5 94 69 -001 97 80 43 -27-23-23 000 112 13 16 -42.4 -46.3 29.04 4 8 90 64 000 98 67 42 -27-25-24 000 113 13 17 -41.5 -45.3 29.06 3 11 89 63 003 100 81 45 -26-26-25 000 114 13 18 -41.7 -45.2 29.09 4 14 102 76 001 103 87 48 -26-27-26 000 115 13 19 -41.3 -44.4 29.11 6 14 117 91 003 109106 55 -28-27-25 000 116 13 20 -39.9 -42.0 29.13 7 15 101 75 002 124 99 59 -29-28-26 000 117 13 21 -40.1 -42.2 29.15 6 14 89 63 000 124 95 65 -30-27-24 000 118 13 22 -40.8 -43.1 29.17 6 12 77 52 000 122104 67 -31-27-26 000 119 13 23 -41.2 -43.5 29.18 5 14 81 56 000 124103 69 -30-28-27 000 120 14 00 -41.5 -43.9 29.20 5 13 91 65 000 124 95 72 -28-29-28 000 * 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.