Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-31/12 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 31 12 -43.9 -51.2 29.06 3 3 77 51 000 50 37 48 -31-27-26 000 1 31 13 -29.7 -29.7 29.05 3 3 91 65 000 132 36 47 -30-27-27 000 2 31 14 -30.1 -30.1 29.07 4 4 108 82 000 137 35 45 -30-27-27 001 3 31 15 -30.0 -30.0 29.09 5 5 98 71 000 137 34 43 -29-27-27 001 4 31 16 -29.6 -29.6 29.10 6 6 98 72 001 137 33 47 -29-27-27 001 5 31 17 -30.7 -30.7 29.13 7 7 105 79 001 138 37 54 -29-27-27 001 6 31 18 -29.5 -29.5 29.14 4 4 109 83 000 137 44 59 -28-27-27 001 7 31 19 -31.3 -31.3 29.16 5 5 142 115 001 139 57 57 -27-27-27 001 8 31 20 -32.7 -32.7 29.16 6 6 130 104 001 141 60 56 -27-26-26 003 9 31 21 -31.4 -31.4 29.15 5 5 126 100 000 139 55 60 -27-26-26 002 10 31 22 -31.3 -31.3 29.17 5 5 122 96 001 139 44 64 -27-26-26 002 11 31 23 -31.0 -31.0 29.18 5 5 125 98 000 138 30 70 -27-26-26 002 12 01 00 -33.1 -33.1 29.19 6 6 129 103 001 142 24 70 -26-26-26 003 13 01 01 -33.2 -33.2 29.20 6 6 124 98 002 142 38 62 -26-26-26 003 14 01 02 -33.9 -33.9 29.20 6 6 126 100 001 143 55 62 -26-26-25 003 15 01 03 -31.9 -31.9 29.20 6 6 113 87 001 140 60 56 -26-26-25 003 16 01 04 -28.2 -28.2 29.20 5 5 93 66 000 134 56 52 -26-25-25 002 17 01 05 -25.0 -25.0 29.20 3 4 87 61 000 131 53 57 -26-25-26 001 18 01 06 -24.9 -24.9 29.21 3 4 99 73 000 130 58 58 -25-25-26 000 19 01 07 -24.8 -24.8 29.19 6 6 93 66 000 130 75 44 -25-25-25 000 20 01 08 -26.4 -26.4 29.19 6 6 102 75 000 132 98 41 -25-25-25 001 21 01 09 -27.2 -27.2 29.19 7 8 99 72 000 133115 28 -25-25-25 001 22 01 10 -25.3 -25.3 29.18 8 10 90 64 000 131120 24 -25-24-25 000 23 01 11 -23.8 -23.8 29.17 9 11 81 55 000 129117 25 -25-24-24 000 24 01 12 -23.2 -23.2 29.17 9 11 78 51 000 128118 31 -25-24-24 000 25 01 13 -22.3 -22.3 29.19 9 11 73 47 -003 127124 34 -25-25-24 002 26 01 14 -22.2 -22.2 29.17 10 11 81 55 -001 126127 30 -24-24-24 004 27 01 15 -23.6 -23.6 29.15 10 12 89 63 000 128126 29 -23-24-24 003 28 01 16 -25.4 -25.4 29.15 12 14 91 65 000 131118 31 -23-23-24 004 29 01 17 -23.6 -23.6 29.14 13 16 80 54 -003 129121 45 -23-24-25 006 30 01 18 -21.3 -21.3 29.14 14 17 72 46 -002 125125 84 -24-25-25 005 31 01 19 -21.8 -21.8 29.13 15 18 70 44 -002 126128 91 -25-25-26 002 32 01 20 -21.1 -21.1 29.12 15 18 60 34 -003 125129 56 -25-26-26 002 33 01 21 -20.6 -20.6 29.11 16 18 50 24 -005 122129 54 -24-26-27 002 34 01 22 -20.4 -20.4 29.11 16 18 47 21 -004 119129 82 -24-26-27 002 35 01 23 -20.4 -20.4 29.12 16 18 52 26 -007 109120102 -24-26-27 013 36 02 00 -21.0 -21.0 29.12 15 17 67 41 -009 110113102 -24-26-27 020 37 02 01 -22.2 -22.2 29.12 16 17 76 50 -008 119112105 -25-26-27 017 38 02 02 -23.3 -23.3 29.12 16 18 78 52 -003 128117106 -26-26-27 011 39 02 03 -23.7 -23.7 29.12 17 18 77 51 001 129121107 -26-26-26 008 40 02 04 -23.6 -23.6 29.11 17 18 76 49 001 129124108 -26-26-27 006 41 02 05 -23.4 -23.4 29.13 16 17 75 48 001 129124112 -26-26-27 005 42 02 06 -23.7 -23.7 29.14 17 18 78 51 003 129117116 -26-26-26 006 43 02 07 -25.0 -25.0 29.14 16 17 81 55 001 131114119 -27-27-27 007 44 02 08 -26.3 -26.3 29.14 16 18 84 57 001 133110113 -27-27-27 006 45 02 09 -26.9 -26.9 29.13 15 17 85 58 002 134109105 -27-26-27 005 46 02 10 -26.5 -26.5 29.12 14 18 78 52 -002 133107104 -28-27-26 003 47 02 11 -25.0 -25.0 29.15 12 15 68 42 000 131124122 -28-28-27 003 48 02 12 -26.0 -26.0 29.15 13 14 85 59 -003 132114117 -27-27-28 008 49 02 13 -28.7 -28.7 29.13 14 17 91 65 -002 136114 96 -27-27-28 006 50 02 14 -29.4 -29.4 29.14 13 16 94 67 -003 137112115 -28-28-28 003 51 02 15 -29.6 -29.6 29.14 13 17 91 65 -004 137108103 -28-28-28 007 52 02 16 -29.3 -29.3 29.14 15 18 87 61 -002 137109 94 -28-28-29 005 53 02 17 -28.7 -28.7 29.13 15 20 84 58 -003 136108 88 -28-28-29 004 54 02 18 -29.5 -29.5 29.11 15 20 88 62 -002 137109 89 -29-28-29 004 55 02 19 -31.3 -31.3 29.10 15 20 91 65 -002 140113 94 -29-28-29 005 56 02 20 -31.1 -31.1 29.10 15 21 91 64 -002 140112102 -30-29-29 006 57 02 21 -30.6 -30.6 29.09 15 22 91 65 -001 139110103 -29-29-29 006 58 02 22 -30.5 -30.5 29.09 15 22 93 66 000 139107 98 -30-29-29 005 59 02 23 -30.9 -30.9 29.10 15 21 95 69 000 140109102 -31-28-28 005 60 03 00 -30.5 -30.5 29.09 14 22 94 68 -001 139111106 -32-29-28 004 61 03 01 -29.3 -29.3 29.08 14 23 91 65 -001 137113117 -31-28-28 004 62 03 02 -28.5 -28.5 29.07 14 22 92 66 000 136109123 -30-28-28 004 63 03 03 -29.1 -29.1 29.07 12 20 100 74 000 137101117 -29-28-28 004 64 03 04 -31.6 -31.6 29.07 9 17 116 90 001 140 96118 -28-28-28 004 65 03 05 -34.4 -34.4 29.06 8 11 147 120 002 144 87115 -29-28-28 004 66 03 06 -32.6 -32.6 29.07 10 11 174 148 001 142 97111 -30-29-29 004 67 03 07 -30.4 -30.4 29.05 10 13 173 147 001 138104 98 -29-29-29 003 68 03 08 -31.7 -31.7 29.04 11 15 172 146 001 140 97 97 -27-28-28 003 69 03 09 -30.7 -30.7 29.04 11 14 175 149 001 139 93 93 -27-28-28 003 70 03 10 -30.4 -30.4 29.03 10 16 188 162 001 138 76 93 -26-27-27 003 71 03 11 -30.2 -30.2 29.02 10 16 185 159 001 138 76 89 -25-26-26 002 72 03 12 -30.5 -30.5 29.01 10 14 188 162 003 139 82 84 -25-25-25 003 73 03 13 -31.0 -31.0 29.01 10 15 186 160 004 139 69 82 -24-24-25 003 74 03 14 -30.9 -30.9 28.99 10 15 184 158 003 139 64 79 -24-24-25 003 75 03 15 -30.9 -30.9 28.97 9 12 183 157 003 139 62 71 -23-24-24 003 76 03 16 -30.4 -30.4 28.95 9 12 189 163 003 138 56 68 -22-23-24 003 77 03 17 -29.0 -29.0 28.93 9 14 188 162 001 136 52 64 -22-22-23 002 78 03 18 -29.2 -29.2 28.91 8 13 193 167 002 136 48 60 -22-21-22 002 79 03 19 -27.9 -27.9 28.90 8 14 205 179 006 134 46 58 -23-21-21 002 80 03 20 -26.3 -26.3 28.89 9 15 212 186 003 132 48 56 -23-21-20 001 81 03 21 -25.4 -25.4 28.87 9 15 209 183 000 131 52 47 -23-22-21 001 82 03 22 -29.8 -29.8 28.86 8 9 176 150 002 137 50 31 -23-21-21 001 83 03 23 -34.0 -34.0 28.85 6 6 158 132 000 143 49 29 -22-21-22 003 84 04 00 -31.5 -31.5 28.84 6 6 132 105 -003 139 47 32 -22-22-22 003 85 04 01 -27.5 -27.5 28.84 7 8 110 84 -003 134 46 35 -22-22-23 002 86 04 02 -29.4 -29.4 28.83 7 7 126 100 -004 136 46 47 -23-22-22 002 87 04 03 -30.2 -30.2 28.82 7 7 142 116 -002 138 44 49 -22-22-22 002 88 04 04 -30.2 -30.2 28.81 8 12 137 111 003 138 45 45 -21-21-21 003 89 04 05 -31.8 -31.8 28.81 6 8 173 147 011 140 45 50 -21-21-21 003 90 04 06 -30.6 -30.6 28.81 7 7 181 154 007 138 45 52 -22-21-22 002 91 04 07 -27.6 -27.6 28.80 6 9 162 136 000 134 49 54 -21-22-23 001 92 04 08 -27.5 -27.5 28.79 7 11 162 136 -001 134 48 54 -22-21-23 000 93 04 09 -28.7 -28.7 28.78 8 10 152 125 002 136 49 51 -21-21-22 001 94 04 10 -29.0 -29.0 28.78 7 7 157 130 002 136 49 54 -21-21-22 002 95 04 11 -30.7 -30.7 28.77 7 7 177 151 001 138 50 56 -22-21-22 002 96 04 12 -30.0 -30.0 28.75 7 7 177 150 000 137 49 53 -22-21-22 002 97 04 13 -29.3 -29.3 28.73 8 8 175 149 000 136 49 50 -21-21-22 002 98 04 14 -28.7 -28.7 28.70 8 9 175 149 000 135 50 45 -21-21-22 002 99 04 15 -28.6 -28.6 28.68 8 9 177 151 000 135 46 45 -21-21-22 002 100 04 16 -30.8 -30.8 28.66 8 9 191 165 001 139 44 49 -21-21-22 002 101 04 17 -28.1 -28.1 28.64 8 13 202 176 000 135 45 50 -22-22-22 002 102 04 18 -26.9 -26.9 28.62 9 14 209 183 000 133 44 47 -21-21-22 001 103 04 19 -26.9 -26.9 28.61 9 13 210 183 000 133 43 43 -21-21-22 002 104 04 20 -26.7 -26.7 28.60 9 12 217 190 000 133 42 39 -22-22-22 002 105 04 21 -25.9 -25.9 28.58 10 12 220 194 000 132 43 35 -22-22-22 002 106 04 22 -25.7 -25.7 28.56 10 13 221 195 001 131 47 33 -23-22-22 001 107 04 23 -25.4 -25.4 28.55 11 14 224 198 000 131 48 30 -23-22-22 001 108 05 00 -25.4 -25.4 28.53 11 13 223 197 000 131 49 26 -24-22-22 001 109 05 01 -24.9 -24.9 28.51 11 14 226 200 001 130 48 25 -24-22-22 001 110 05 02 -24.6 -24.6 28.50 11 14 225 199 001 130 44 24 -24-23-22 001 111 05 03 -24.3 -24.3 28.48 11 15 224 198 001 129 40 23 -24-22-22 001 112 05 04 -24.6 -24.6 28.46 11 14 223 197 000 130 39 23 -24-22-22 002 113 05 05 -24.7 -24.7 28.45 11 15 224 198 000 130 41 22 -25-22-21 002 114 05 06 -24.3 -24.3 28.44 12 15 226 200 000 129 44 22 -25-22-21 002 115 05 07 -23.5 -23.5 28.43 13 17 230 204 001 128 44 23 -25-22-21 000 116 05 08 -23.9 -23.9 28.43 14 18 232 206 001 129 44 21 -25-22-21 000 117 05 09 -24.1 -24.1 28.42 14 18 232 206 001 129 42 20 -25-22-21 000 118 05 10 -24.2 -24.2 28.41 14 19 232 205 001 130 46 19 -25-21-21 000 119 05 11 -24.7 -24.7 28.40 12 18 223 196 001 130 48 17 -23-21-20 000 120 05 12 -24.6 -24.6 28.40 12 17 229 203 002 130 56 14 -23-20-20 000 * 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.