Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-27/00 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 27 00 -21.0 -24.8 29.02 7 12 103 77 000 81 78 95 -16-15-16 000 1 27 01 -16.1 -16.5 29.02 11 28 109 82 -002 105 93105 -15-14-15 000 2 27 02 -15.3 -15.3 29.04 16 34 99 72 000 111 76 80 -14-14-15 000 3 27 03 -14.1 -14.8 29.05 17 32 83 57 -001 101 75 87 -14-15-16 000 4 27 04 -14.4 -14.9 29.11 17 31 81 55 000 104 91105 -16-16-17 000 5 27 05 -13.7 -15.7 29.16 26 38 73 47 006 86 93 96 -16-18-19 001 6 27 06 -15.8 -17.3 29.21 24 37 58 32 010 88 98 96 -19-20-21 001 7 27 07 -16.5 -17.7 29.23 21 31 56 30 000 92101 97 -19-21-21 000 8 27 08 -16.7 -17.8 29.26 18 30 57 31 -004 93100104 -19-21-20 003 9 27 09 -16.1 -17.4 29.29 17 29 55 29 003 91 94 93 -19-20-19 004 10 27 10 -16.6 -17.7 29.32 11 20 89 63 005 96106103 -19-20-20 005 11 27 11 -17.1 -18.2 29.33 9 19 99 72 003 95101106 -19-19-18 010 12 27 12 -16.7 -17.9 29.34 8 22 97 71 003 96101110 -19-18-17 006 13 27 13 -15.9 -17.2 29.35 6 23 97 71 006 97 99110 -17-16-16 010 14 27 14 -17.1 -17.8 29.36 6 19 144 118 003 105 93103 -16-15-16 005 15 27 15 -19.5 -19.5 29.38 7 16 153 126 004 122 74 96 -15-14-15 000 16 27 16 -21.9 -21.9 29.42 6 18 136 110 005 125 60 89 -16-13-14 000 17 27 17 -19.6 -19.6 29.43 8 21 111 84 004 122 54 86 -15-13-14 000 18 27 18 -19.4 -19.4 29.44 9 21 106 80 003 118 57 91 -14-13-14 000 19 27 19 -20.2 -20.2 29.45 8 18 122 96 002 121 61 88 -13-13-13 000 20 27 20 -20.1 -20.1 29.46 9 17 106 80 005 123 60 91 -12-12-13 000 21 27 21 -18.8 -18.8 29.48 10 20 100 74 003 121 67106 -13-12-13 000 22 27 22 -19.5 -19.5 29.49 10 21 114 88 002 122 81105 -12-12-13 000 23 27 23 -18.6 -18.6 29.50 9 18 110 84 002 121 80 94 -11-12-13 000 24 28 00 -21.2 -21.2 29.51 7 14 128 102 003 124 82 94 -12-13-14 000 25 28 01 -22.5 -22.5 29.52 6 11 127 101 -001 126 79 92 -11-12-14 000 26 28 02 -22.4 -22.4 29.52 6 6 136 110 002 126 77 80 -11-12-13 000 27 28 03 -22.0 -22.0 29.52 6 6 141 115 -002 125 65 77 -11-12-13 000 28 28 04 -21.9 -21.9 29.52 6 6 148 122 -001 125 62 80 -12-12-13 000 29 28 05 -22.1 -22.1 29.51 6 6 158 131 003 125 62 73 -12-12-13 000 30 28 06 -23.1 -23.1 29.51 6 6 164 138 002 127 65 71 -12-12-13 000 31 28 07 -23.5 -23.5 29.51 6 6 181 155 002 127 67 71 -12-12-13 000 32 28 08 -24.1 -24.1 29.50 6 8 194 167 002 128 68 70 -12-12-13 000 33 28 09 -24.8 -24.8 29.49 6 9 195 169 003 129 61 69 -12-12-12 000 34 28 10 -24.5 -24.5 29.47 5 9 200 174 002 128 56 64 -12-11-11 000 35 28 11 -24.2 -24.2 29.45 5 12 209 182 002 128 53 59 -12-11-11 000 36 28 12 -21.7 -21.7 29.43 7 18 218 192 001 125 51 56 -11-11-11 000 37 28 13 -18.9 -18.9 29.42 9 20 228 202 001 121 52 54 -11-10-11 000 38 28 14 -16.9 -16.9 29.40 14 27 227 201 001 111 58 54 -11-10-11 000 39 28 15 -15.4 -15.7 29.39 16 29 231 204 002 105 65 52 -11-11-12 000 40 28 16 -15.1 -15.7 29.38 16 29 230 203 002 103 69 50 -12-12-12 000 41 28 17 -14.9 -15.5 29.36 16 29 237 211 000 102 71 49 -12-12-12 000 42 28 18 -14.5 -15.6 29.35 17 29 240 214 002 97 64 50 -12-12-12 000 43 28 19 -14.4 -15.6 29.32 18 30 244 217 003 96 64 49 -13-12-12 000 44 28 20 -14.5 -15.6 29.29 20 33 244 217 002 96 64 39 -14-12-12 000 45 28 21 -15.0 -15.7 29.26 20 32 239 212 001 100 55 31 -15-12-11 000 46 28 22 -15.5 -15.8 29.24 18 29 237 211 001 105 42 28 -16-12-10 000 47 28 23 -16.1 -16.1 29.22 17 27 236 210 001 108 41 26 -17-13-10 000 48 29 00 -16.4 -16.4 29.18 18 27 236 210 000 111 39 22 -17-12-11 000 49 29 01 -16.8 -16.8 29.16 18 27 231 205 000 115 36 20 -16-12-11 000 50 29 02 -17.4 -17.4 29.13 16 25 232 206 000 119 39 20 -16-13-12 000 51 29 03 -17.7 -17.7 29.10 16 24 234 207 002 120 40 19 -16-13-12 000 52 29 04 -17.7 -17.7 29.07 16 25 231 204 011 120 39 19 -15-12-11 000 53 29 05 -18.6 -18.6 29.05 13 23 211 184 009 121 45 22 -15-13-12 000 54 29 06 -26.6 -26.6 29.06 8 18 135 109 009 132 53 24 -19-14-13 000 55 29 07 -28.2 -28.2 29.04 4 4 108 82 006 134 66 26 -17-16-15 000 56 29 08 -28.0 -28.0 29.03 4 13 107 81 005 133 22 21 -16-15-16 000 57 29 09 -27.2 -27.2 29.03 3 14 100 74 005 133 40 22 -17-18-17 001 58 29 10 -30.8 -30.8 29.03 6 13 132 106 011 137 46 20 -19-18-18 001 59 29 11 -30.2 -30.2 29.03 6 8 119 93 010 136 47 32 -19-19-20 001 60 29 12 -28.0 -28.0 29.03 7 19 118 92 006 134 60 26 -21-22-21 001 61 29 13 -30.4 -30.4 29.04 10 21 116 90 000 138 86 24 -26-22-21 002 62 29 14 -29.5 -29.5 29.04 12 29 98 72 -001 136 64 29 -27-21-19 002 63 29 15 -28.0 -28.0 29.04 14 29 81 55 000 134 55 36 -25-21-21 002 64 29 16 -27.2 -27.2 29.04 15 29 90 63 000 133 83 31 -23-23-24 003 65 29 17 -26.1 -26.1 29.05 18 34 86 59 -001 132104 29 -24-23-23 001 66 29 18 -25.9 -25.9 29.06 19 33 90 64 000 132 98 38 -23-23-23 000 67 29 19 -23.6 -23.6 29.07 22 34 83 56 001 129107 51 -25-23-23 000 68 29 20 -24.2 -24.2 29.08 24 33 77 51 000 129103 76 -27-24-24 000 69 29 21 -22.8 -22.8 29.09 22 32 78 52 000 114 92102 -25-25-25 000 70 29 22 -24.1 -24.1 29.10 21 30 86 60 000 115 84100 -24-25-24 000 71 29 23 -23.8 -23.8 29.11 23 34 81 55 000 126 95 92 -26-26-26 000 72 30 00 -23.5 -23.5 29.11 24 36 90 64 000 103 83105 -24-24-26 000 73 30 01 -23.5 -23.5 29.11 24 35 83 57 000 118103102 -26-25-25 000 74 30 02 -23.3 -23.3 29.12 25 36 81 55 000 116 97116 -26-26-25 000 75 30 03 -23.6 -23.6 29.13 25 34 84 58 000 113 94120 -26-25-25 000 76 30 04 -24.1 -24.1 29.14 24 33 82 56 000 115 95115 -26-26-26 000 77 30 05 -24.4 -24.4 29.14 24 33 83 56 001 114 97 96 -25-26-26 000 78 30 06 -24.5 -24.5 29.14 22 31 87 61 000 108 94 93 -25-25-26 000 79 30 07 -24.9 -24.9 29.14 22 29 88 62 002 116 95 91 -25-25-26 000 80 30 08 -24.8 -24.8 29.14 21 31 86 60 001 117 85100 -25-25-26 000 81 30 09 -25.3 -25.3 29.13 20 31 87 61 001 121 77104 -26-25-26 000 82 30 10 -25.4 -25.4 29.13 20 31 83 57 002 122 68105 -26-25-26 000 83 30 11 -25.3 -25.3 29.13 19 29 79 53 001 124 63 90 -26-25-26 000 84 30 12 -25.1 -25.1 29.13 18 27 76 49 002 125 57 78 -26-25-26 000 85 30 13 -25.2 -25.2 29.12 17 26 76 49 002 123 56 58 -26-25-25 000 86 30 14 -26.3 -26.3 29.11 14 22 84 57 003 132 55 44 -25-25-25 000 87 30 15 -28.1 -28.1 29.11 11 20 89 63 002 134 53 47 -25-25-25 001 88 30 16 -29.0 -29.0 29.10 9 18 97 71 001 135 50 46 -24-25-24 001 89 30 17 -31.4 -31.4 29.09 7 13 119 93 001 139 40 45 -25-24-23 001 90 30 18 -33.3 -33.3 29.08 6 7 135 109 001 141 38 43 -25-24-23 002 91 30 19 -33.8 -33.8 29.07 7 7 151 125 000 142 40 41 -25-24-23 002 92 30 20 -33.5 -33.5 29.06 7 7 170 144 000 142 41 37 -24-23-23 002 93 30 21 -33.0 -33.0 29.05 7 7 181 155 000 141 42 36 -24-23-23 002 94 30 22 -32.8 -32.8 29.04 7 7 185 159 000 141 41 37 -23-23-23 002 95 30 23 -32.9 -32.9 29.03 7 7 190 164 000 141 39 37 -23-23-22 002 96 31 00 -31.7 -31.7 29.02 7 10 201 174 000 139 40 37 -22-23-22 002 97 31 01 -30.8 -30.8 29.01 7 15 204 178 002 138 39 39 -22-22-22 002 98 31 02 -28.2 -28.2 29.00 8 17 213 187 001 134 37 43 -22-22-22 001 99 31 03 -27.7 -27.7 28.99 9 17 216 190 000 133 37 44 -22-22-22 001 100 31 04 -25.7 -25.7 28.99 10 19 220 194 000 131 38 38 -22-21-21 000 101 31 05 -24.2 -24.2 28.98 12 20 226 200 000 129 43 29 -23-21-21 000 102 31 06 -23.4 -23.4 28.98 12 20 226 200 000 128 39 24 -23-21-20 000 103 31 07 -23.0 -23.0 28.98 13 20 229 202 000 127 37 24 -23-20-20 000 104 31 08 -22.8 -22.8 28.98 13 21 229 203 000 127 34 23 -23-20-20 000 105 31 09 -22.9 -22.9 28.99 14 22 229 203 001 127 33 21 -23-20-20 000 106 31 10 -22.8 -22.8 28.99 14 22 229 203 000 127 35 19 -23-20-19 000 107 31 11 -22.8 -22.8 29.00 14 22 228 202 000 127 33 19 -23-20-19 000 108 31 12 -23.0 -23.0 29.01 13 21 229 203 000 127 31 21 -23-20-19 000 109 31 13 -22.8 -22.8 29.02 13 21 230 204 000 127 32 25 -23-20-19 000 110 31 14 -22.4 -22.4 29.04 14 21 231 205 000 126 36 30 -23-20-19 000 111 31 15 -22.5 -22.5 29.06 13 20 229 203 -001 127 37 31 -23-20-19 000 112 31 16 -22.8 -22.8 29.08 12 19 230 203 000 127 45 30 -23-21-19 000 113 31 17 -23.1 -23.1 29.10 11 17 228 201 000 127 48 32 -23-21-19 000 114 31 18 -23.4 -23.4 29.13 11 15 226 200 000 128 55 35 -23-21-18 000 115 31 19 -24.0 -24.0 29.16 9 13 221 195 000 128 70 37 -23-22-18 000 116 31 20 -24.5 -24.5 29.18 9 12 222 196 -001 129 77 43 -23-22-18 000 117 31 21 -25.8 -25.8 29.20 9 12 216 190 000 131 60 41 -23-20-18 000 118 31 22 -28.0 -28.0 29.23 8 11 208 181 001 134 49 38 -23-19-18 001 119 31 23 -31.5 -31.5 29.25 6 8 192 166 000 139 48 37 -23-18-18 001 120 01 00 -32.8 -32.8 29.27 6 8 191 164 000 141 49 32 -23-18-18 002 * 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.