Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-27/12 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 27 12 -19.4 -21.7 29.32 5 5 148 122 000 98 98100 -18-17-17 000 1 27 13 -16.0 -17.2 29.32 5 15 141 114 001 99101 98 -17-16-16 010 2 27 14 -18.2 -18.2 29.32 6 18 159 132 001 120 93 91 -16-15-15 001 3 27 15 -21.2 -21.2 29.34 7 16 163 136 002 124 76 81 -15-14-14 000 4 27 16 -23.4 -23.4 29.38 8 18 157 131 005 127 66 84 -14-14-14 000 5 27 17 -20.1 -20.1 29.41 7 23 108 82 004 123 56 82 -15-13-13 000 6 27 18 -22.3 -22.3 29.41 5 23 176 150 003 126 51 76 -15-13-13 000 7 27 19 -20.8 -20.8 29.40 4 21 149 123 003 123 58 81 -14-13-12 000 8 27 20 -19.4 -19.4 29.42 8 23 124 98 002 119 57 86 -12-11-12 000 9 27 21 -18.9 -18.9 29.44 9 22 118 92 000 116 70100 -11-10-12 000 10 27 22 -20.7 -20.7 29.47 9 21 125 99 000 124 75 97 -10-10-11 000 11 27 23 -21.1 -21.1 29.46 8 20 127 101 000 124 77 93 -10-10-11 000 12 28 00 -19.8 -19.8 29.48 9 20 110 84 000 123 76 91 -10-10-11 000 13 28 01 -20.3 -20.3 29.48 7 16 117 91 001 123 78 84 -11-10-11 000 14 28 02 -22.4 -22.4 29.48 7 11 128 102 001 126 69 86 -10-10-11 000 15 28 03 -22.4 -22.4 29.49 7 11 130 104 001 126 68 83 -11-11-11 000 16 28 04 -22.6 -22.6 29.51 7 7 132 106 002 126 65 90 -11-10-12 000 17 28 05 -22.1 -22.1 29.51 6 6 132 105 002 125 68 95 -11-11-12 000 18 28 06 -22.2 -22.2 29.51 5 5 139 113 002 125 66 83 -10-11-12 000 19 28 07 -22.2 -22.2 29.51 5 5 143 116 002 125 70 82 -10-11-12 000 20 28 08 -22.3 -22.3 29.51 5 5 151 125 001 125 71 79 -11-11-12 000 21 28 09 -22.3 -22.3 29.50 4 4 165 139 001 125 69 79 -11-12-12 000 22 28 10 -23.0 -23.0 29.50 5 5 171 145 001 126 72 76 -11-12-12 000 23 28 11 -23.5 -23.5 29.49 5 5 179 152 000 127 80 69 -11-11-11 000 24 28 12 -23.6 -23.6 29.48 4 4 187 160 001 127 74 63 -11-11-11 000 25 28 13 -23.8 -23.8 29.47 4 4 195 169 001 127 69 60 -11-11-11 000 26 28 14 -24.1 -24.1 29.46 5 7 205 179 001 128 64 57 -11-11-10 000 27 28 15 -23.1 -23.1 29.44 5 11 221 195 001 127 61 54 -11-11-10 000 28 28 16 -21.2 -21.2 29.43 7 16 224 198 001 124 60 51 -11-11-10 000 29 28 17 -19.8 -19.8 29.43 8 20 228 202 001 122 58 50 -12-10-10 000 30 28 18 -18.9 -18.9 29.41 8 19 227 201 001 121 55 46 -12-10-10 000 31 28 19 -18.8 -18.8 29.38 9 19 228 202 002 121 52 44 -12 -9-10 000 32 28 20 -17.2 -17.2 29.35 11 22 234 208 003 119 54 42 -11 -9-10 000 33 28 21 -16.5 -16.5 29.34 13 26 229 203 004 115 57 43 -11 -9-10 000 34 28 22 -15.2 -15.3 29.32 16 28 229 203 002 107 55 46 -11 -9 -9 000 35 28 23 -14.7 -15.2 29.30 16 28 229 203 002 102 54 46 -12-10-10 000 36 29 00 -14.8 -15.3 29.27 16 29 230 203 002 103 57 40 -12-10-10 000 37 29 01 -15.3 -15.4 29.25 16 27 228 202 001 108 46 28 -14-11-10 000 38 29 02 -15.7 -15.7 29.23 15 26 228 202 002 113 40 20 -15-12-10 000 39 29 03 -16.5 -16.5 29.20 14 25 232 205 003 117 39 17 -17-13-11 000 40 29 04 -16.9 -16.9 29.18 15 24 234 208 005 117 45 19 -17-13-11 000 41 29 05 -17.4 -17.4 29.16 14 24 228 202 000 120 45 18 -16-13-11 000 42 29 06 -18.3 -18.3 29.15 12 21 216 190 -002 121 49 17 -15-13-11 000 43 29 07 -25.2 -25.2 29.14 7 17 156 130 -003 130 59 18 -18-14-12 000 44 29 08 -28.0 -28.0 29.13 5 5 139 113 -004 133 61 22 -18-15-13 000 45 29 09 -29.6 -29.6 29.13 4 4 112 86 -003 136 60 27 -18-16-14 001 46 29 10 -28.5 -28.5 29.13 3 3 125 98 -002 135 32 32 -16-16-16 001 47 29 11 -29.7 -29.7 29.12 5 13 127 101 001 136 43 35 -17-18-17 001 48 29 12 -30.2 -30.2 29.12 6 16 126 99 000 137 45 25 -18-19-18 001 49 29 13 -31.4 -31.4 29.13 8 12 123 96 002 139 51 26 -20-20-19 002 50 29 14 -30.4 -30.4 29.13 8 19 118 92 000 137 84 24 -23-23-20 002 51 29 15 -29.9 -29.9 29.13 10 27 116 90 000 137 76 28 -27-21-19 002 52 29 16 -30.5 -30.5 29.13 10 29 95 69 000 138 62 31 -26-20-19 002 53 29 17 -30.5 -30.5 29.13 8 22 93 67 002 137 56 35 -25-21-21 002 54 29 18 -32.2 -32.2 29.13 7 20 110 84 000 140 67 35 -23-23-21 002 55 29 19 -31.3 -31.3 29.13 9 21 105 79 001 139 79 41 -24-24-21 002 56 29 20 -32.3 -32.3 29.13 8 20 119 93 001 140 89 42 -24-24-23 002 57 29 21 -28.5 -28.5 29.12 11 25 104 78 000 135117 49 -23-24-23 003 58 29 22 -27.9 -27.9 29.12 14 27 100 74 000 134119 63 -23-24-22 003 59 29 23 -27.2 -27.2 29.12 15 26 94 68 -002 133117 64 -23-23-22 002 60 30 00 -25.7 -25.7 29.12 17 25 88 62 000 131103 72 -24-22-23 002 61 30 01 -25.5 -25.5 29.13 18 25 79 53 001 131 91 92 -25-22-23 000 62 30 02 -23.6 -23.6 29.13 18 32 81 55 001 128 89 73 -25-23-23 000 63 30 03 -22.7 -22.7 29.13 21 33 84 58 000 124 92 75 -25-23-23 000 64 30 04 -23.7 -23.7 29.13 22 33 78 51 000 129101103 -26-23-24 000 65 30 05 -25.7 -25.7 29.14 21 35 87 61 000 131 95115 -25-25-25 000 66 30 06 -24.5 -24.5 29.14 24 35 85 59 000 126105106 -25-25-25 000 67 30 07 -23.7 -23.7 29.15 22 33 78 52 000 129110109 -26-26-25 000 68 30 08 -24.4 -24.4 29.15 22 35 81 55 000 125 87106 -25-25-26 000 69 30 09 -24.5 -24.5 29.14 23 34 84 58 000 119 81107 -25-25-26 000 70 30 10 -24.4 -24.4 29.14 23 32 85 59 002 113 84104 -25-25-26 000 71 30 11 -24.5 -24.5 29.14 22 33 83 57 000 119102103 -26-26-26 000 72 30 12 -24.8 -24.8 29.15 23 33 86 60 000 118106109 -26-26-27 000 73 30 13 -24.7 -24.7 29.14 22 31 88 61 000 120109103 -27-26-27 000 74 30 14 -25.0 -25.0 29.14 22 31 86 60 002 130108105 -27-26-27 000 75 30 15 -24.9 -24.9 29.14 22 30 87 61 000 129106109 -27-26-27 000 76 30 16 -25.0 -25.0 29.14 21 30 86 60 000 130107107 -27-27-27 000 77 30 17 -25.0 -25.0 29.15 21 30 86 59 000 129107107 -27-27-27 000 78 30 18 -25.3 -25.3 29.15 20 29 85 59 000 131105106 -27-27-27 000 79 30 19 -25.4 -25.4 29.16 20 28 83 57 001 131104104 -27-27-27 000 80 30 20 -25.8 -25.8 29.16 19 27 83 57 000 131104101 -27-27-27 000 81 30 21 -26.3 -26.3 29.16 18 26 85 58 000 132103101 -27-27-28 000 82 30 22 -26.6 -26.6 29.17 18 27 83 57 000 133104100 -27-27-28 000 83 30 23 -26.8 -26.8 29.18 18 27 80 54 000 133100100 -27-27-28 000 84 31 00 -26.7 -26.7 29.19 18 27 77 51 -001 133 98104 -28-27-27 000 85 31 01 -27.0 -27.0 29.20 18 26 77 51 -001 133 86113 -28-26-27 000 86 31 02 -27.1 -27.1 29.22 18 25 77 51 000 133 80113 -27-26-27 001 87 31 03 -26.8 -26.8 29.22 17 24 77 51 000 133 83113 -27-26-26 001 88 31 04 -27.3 -27.3 29.23 15 22 81 55 000 133 79113 -26-26-26 001 89 31 05 -28.0 -28.0 29.25 15 21 84 58 000 134 72111 -26-26-26 002 90 31 06 -28.0 -28.0 29.26 14 20 83 57 000 134 68111 -27-26-27 002 91 31 07 -28.2 -28.2 29.27 13 20 88 61 000 135 75114 -27-26-27 001 92 31 08 -29.0 -29.0 29.28 12 19 91 65 000 136 81115 -27-26-26 001 93 31 09 -28.8 -28.8 29.30 12 19 89 63 000 135 93109 -27-26-26 001 94 31 10 -28.5 -28.5 29.31 12 19 89 62 000 135 95106 -27-27-26 001 95 31 11 -28.6 -28.6 29.33 11 17 89 63 000 135 82113 -26-26-26 001 96 31 12 -28.2 -28.2 29.34 12 18 81 55 000 135 86107 -26-26-26 002 97 31 13 -26.1 -26.1 29.36 12 19 79 53 000 132 96103 -27-27-26 002 98 31 14 -29.0 -29.0 29.37 11 18 88 62 000 136 77106 -25-26-26 001 99 31 15 -30.2 -30.2 29.38 10 17 94 68 000 137 69106 -24-26-26 001 100 31 16 -29.9 -29.9 29.39 8 13 95 69 000 137 61110 -24-25-26 001 101 31 17 -29.3 -29.3 29.40 9 13 94 68 000 136 63105 -25-24-26 001 102 31 18 -29.7 -29.7 29.42 8 12 105 79 000 136 61103 -25-24-25 001 103 31 19 -30.3 -30.3 29.43 8 12 110 84 000 137 62105 -26-24-25 001 104 31 20 -30.1 -30.1 29.44 7 12 116 90 000 137 59107 -25-24-24 001 105 31 21 -29.9 -29.9 29.44 7 12 118 91 000 136 54107 -25-24-24 001 106 31 22 -29.1 -29.1 29.45 8 13 107 81 000 135 49104 -24-24-24 001 107 31 23 -28.7 -28.7 29.46 8 13 104 77 000 135 50102 -24-24-24 000 108 01 00 -28.2 -28.2 29.47 8 11 102 76 000 134 47103 -24-24-24 000 109 01 01 -28.1 -28.1 29.47 7 9 104 78 000 134 47105 -24-24-23 000 110 01 02 -28.5 -28.5 29.48 6 8 114 88 000 134 53105 -24-23-24 000 111 01 03 -30.2 -30.2 29.48 6 6 135 109 001 137 53105 -24-23-24 001 112 01 04 -30.5 -30.5 29.48 5 5 140 114 000 137 50105 -24-23-23 001 113 01 05 -30.1 -30.1 29.48 5 5 150 124 001 136 54105 -24-24-23 001 114 01 06 -30.2 -30.2 29.48 5 5 168 142 000 136 56106 -24-24-23 001 115 01 07 -30.3 -30.3 29.49 5 5 184 158 000 137 54105 -24-24-23 001 116 01 08 -30.7 -30.7 29.49 6 7 194 167 000 137 53 99 -24-23-23 001 117 01 09 -30.9 -30.9 29.48 7 9 194 168 000 138 49 95 -23-23-23 001 118 01 10 -30.0 -30.0 29.47 7 10 200 174 000 137 50 89 -23-23-23 001 119 01 11 -29.2 -29.2 29.46 7 11 208 182 001 135 56 86 -23-23-23 001 120 01 12 -26.3 -26.3 29.45 7 13 223 196 001 131 60 79 -23-23-22 001 * 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.