USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-01-09/00 UTC MPAS cell scale: 2.4 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 -6.6 -10.7 28.98 6 7 191 27 000 62 33 27 -5 -4 -5 000 1 09 01 -6.4 -9.4 28.98 5 8 203 39 000 79 35 31 -4 -4 -4 000 2 09 02 -6.4 -8.9 28.97 4 10 211 47 000 84 36 36 -4 -4 -4 000 3 09 03 -6.6 -8.7 28.96 4 10 220 57 000 86 35 38 -3 -4 -4 000 4 09 04 -6.8 -8.8 28.97 5 10 226 63 002 88 34 37 -3 -3 -4 000 5 09 05 -7.2 -9.1 28.97 6 11 224 61 000 89 29 34 -3 -3 -4 000 6 09 06 -7.9 -9.6 28.96 5 11 223 59 000 91 24 35 -3 -3 -4 000 7 09 07 -8.3 -10.0 28.95 7 13 243 79 000 91 18 31 -2 -2 -3 000 8 09 08 -8.6 -10.4 28.94 8 15 258 94 008 92 21 32 -1 -2 -3 000 9 09 09 -9.6 -10.8 28.98 6 9 123 320 000 99 21 33 -3 -2 -3 000 10 09 10 -9.5 -10.7 28.96 4 10 169 5 001 99 28 33 -3 -3 -3 000 11 09 11 -9.6 -10.6 28.97 4 10 224 61 -001 100 25 24 -2 -2 -3 000 12 09 12 -11.0 -11.5 28.96 3 9 217 53 000 110 33 32 -3 -3 -3 000 13 09 13 -12.9 -13.0 28.98 1 4 187 23 000 113 44 32 -3 -3 -4 000 14 09 14 -12.4 -12.9 28.99 4 8 244 80 000 110 30 35 -2 -2 -4 000 15 09 15 -12.2 -12.8 29.00 4 5 239 75 000 109 35 32 -2 -3 -4 000 16 09 16 -11.4 -11.7 29.01 5 7 229 65 003 111 34 30 -2 -4 -4 000 17 09 17 -11.0 -11.9 29.01 3 13 212 48 000 104 37 33 -3 -3 -4 000 18 09 18 -9.9 -11.6 29.01 4 12 207 44 003 94 35 39 -3 -3 -4 000 19 09 19 -8.7 -10.6 29.02 6 14 171 7 002 91 46 43 -6 -3 -4 000 20 09 20 -7.9 -9.7 29.04 9 13 141 337 000 91 57 31 -8 -5 -4 000 21 09 21 -8.5 -9.8 29.05 8 10 129 325 000 97 63 35 -10 -6 -6 000 22 09 22 -8.7 -9.4 29.07 8 13 122 318 000 103 62 43 -10 -6 -6 000 23 09 23 -8.7 -9.3 29.07 8 10 113 309 000 104 61 61 -10 -7 -7 000 24 10 00 -8.6 -8.9 29.08 7 8 109 306 008 106 69 68 -10 -7 -7 000 25 10 01 -9.0 -9.1 29.09 7 8 108 304 005 109 74 70 -10 -7 -7 000 26 10 02 -8.7 -8.8 29.11 6 7 117 313 000 108 87 66 -10 -8 -8 000 27 10 03 -8.4 -9.6 29.10 7 9 114 311 -001 98 91 33 -10 -9 -8 000 28 10 04 -8.4 -10.1 29.11 7 10 105 301 000 93 81 38 -9 -8 -7 000 29 10 05 -8.9 -10.5 29.12 6 9 114 311 000 94 94 38 -10-10 -8 000 30 10 06 -9.6 -11.0 29.13 4 9 117 314 000 96 94 40 -10-10 -8 000 31 10 07 -10.3 -11.6 29.14 4 10 135 331 000 99 90 41 -10-10 -9 000 32 10 08 -10.8 -11.8 29.15 6 11 125 321 000 103 95 44 -10-11-10 000 33 10 09 -11.5 -12.3 29.16 5 11 128 324 000 107102 43 -10-11-12 000 34 10 10 -9.5 -10.9 29.16 5 10 126 322 000 98112 43 -10-12-12 000 35 10 11 -8.6 -10.3 29.17 5 7 124 320 000 94111 44 -10-11-12 000 36 10 12 -8.5 -10.5 29.18 5 10 97 293 000 91110 51 -10-11-12 000 37 10 13 -8.1 -10.5 29.18 5 8 137 334 000 88103 54 -9-11-12 000 38 10 14 -8.0 -10.8 29.19 5 7 128 325 001 84104 58 -9-11-12 000 39 10 15 -7.9 -11.0 29.19 2 5 117 313 -003 82100 62 -9-10-12 000 40 10 16 -7.6 -10.6 29.19 1 4 121 318 003 83101 69 -9-10-12 000 41 10 17 -7.6 -10.7 29.19 3 3 105 302 001 82101 69 -9-10-12 000 42 10 18 -7.5 -10.9 29.20 1 5 135 331 000 80 97 76 -9-10-12 000 43 10 19 -7.6 -10.5 29.19 2 6 166 3 -002 82 96 83 -8-10-11 000 44 10 20 -7.4 -10.2 29.20 3 6 188 24 -001 83 97 91 -8-10-11 000 45 10 21 -7.3 -10.4 29.20 3 4 175 12 001 82 97 95 -8-10-11 000 46 10 22 -7.0 -10.3 29.20 3 3 179 15 000 81 98 99 -8-10-11 000 47 10 23 -6.9 -10.4 29.20 3 3 183 20 000 79 96103 -8-10-11 000 48 11 00 -6.9 -10.5 29.20 2 2 199 35 000 78 96112 -8-10-11 000 49 11 01 -6.8 -10.3 29.19 2 2 243 80 000 79 97115 -8 -9-11 000 50 11 02 -6.8 -9.5 29.19 3 3 307 143 000 84103115 -8 -9-11 000 51 11 03 -7.1 -9.9 29.19 6 6 306 142 -001 83100115 -8-10-11 000 52 11 04 -7.0 -10.0 29.18 5 5 307 144 -001 82 99115 -8-10-11 000 53 11 05 -7.2 -10.2 29.17 5 6 319 156 -001 82 98115 -8-10-11 000 54 11 06 -7.5 -10.3 29.16 6 6 313 150 -001 83 93115 -9-10-11 000 55 11 07 -7.6 -10.5 29.16 5 5 314 151 001 83 92115 -9-10-11 000 56 11 08 -7.8 -10.5 29.16 5 5 316 153 000 85 91114 -9-10-11 000 57 11 09 -7.7 -10.9 29.15 3 4 314 150 000 81 92115 -9-10-11 000 58 11 10 -7.8 -11.0 29.15 2 5 10 207 000 82 94116 -9-10-11 000 59 11 11 -8.4 -10.3 29.14 4 5 0 196 -001 93 96115 -9-10-11 000 60 11 12 -9.0 -10.9 29.13 5 5 4 201 000 93 96116 -9-10-11 000 61 11 13 -8.8 -10.5 29.12 4 5 14 210 000 95 90113 -9-10-12 000 62 11 14 -8.6 -10.6 29.12 5 7 348 184 -001 91 87110 -9-10-12 000 63 11 15 -8.5 -10.2 29.11 5 7 343 180 000 93 90109 -9-10-12 000 64 11 16 -8.6 -10.3 29.10 4 7 340 176 001 94100109 -10-10-11 000 65 11 17 -8.4 -10.3 29.09 1 5 1 197 001 93111114 -9-11-12 000 66 11 18 -8.2 -10.1 29.09 2 4 27 223 000 92111112 -9-11-12 000 67 11 19 -8.2 -10.6 29.08 2 2 29 225 000 88107107 -9-11-12 000 68 11 20 -8.0 -10.8 29.08 1 2 64 260 000 85105 99 -9-11-12 000 69 11 21 -8.0 -10.4 29.07 0 1 328 164 000 87108 95 -9-11-12 000 70 11 22 -8.1 -10.3 29.07 5 5 326 163 000 89110 97 -9-11-12 000 71 11 23 -8.0 -10.2 29.06 5 5 345 181 000 89110 96 -9-11-12 000 72 12 00 -8.1 -10.5 29.06 4 4 351 188 001 87107 93 -9-11-12 000 73 12 01 -8.1 -10.8 29.06 3 3 9 206 001 86106 87 -9-11-12 000 74 12 02 -8.1 -11.0 29.05 1 1 32 229 000 84103 84 -9-11-12 000 75 12 03 -7.9 -11.1 29.04 0 3 96 292 000 82100 89 -9-11-12 000 76 12 04 -7.9 -11.0 29.03 2 4 118 315 000 82101 93 -9-10-12 000 77 12 05 -7.7 -10.7 29.03 2 3 68 265 000 84102105 -9-10-12 000 78 12 06 -7.7 -10.2 29.03 3 3 8 205 000 86105102 -9-10-12 003 79 12 07 -7.8 -10.7 29.03 4 4 358 194 001 84102 98 -9-10-12 000 80 12 08 -7.9 -11.1 29.04 2 4 331 168 -001 82 98 85 -9-10-12 000 81 12 09 -8.2 -11.0 29.04 1 5 183 20 000 82100101 -9-10-12 000 82 12 10 -9.6 -11.8 29.04 3 5 161 357 000 89 98108 -9-10-12 000 83 12 11 -9.0 -10.8 29.04 3 4 150 346 002 94 98115 -9-10-11 000 84 12 12 -8.6 -10.3 29.04 2 4 160 356 000 94 92115 -9-10-10 000 85 12 13 -8.1 -10.2 29.04 4 5 172 8 000 89 87111 -9 -9-10 000 86 12 14 -9.8 -11.4 29.04 5 7 167 4 002 94 94105 -9 -9-10 000 87 12 15 -10.1 -11.0 29.04 5 9 172 8 001 103 91113 -9 -9-10 000 88 12 16 -10.1 -11.1 29.05 4 9 169 5 000 103 84 99 -9 -9-10 000 89 12 17 -10.5 -11.6 29.05 4 10 179 15 000 101 71105 -8 -9-10 000 90 12 18 -10.3 -11.8 29.05 4 8 179 15 000 97 70102 -8 -9-10 000 91 12 19 -9.8 -11.9 29.05 5 9 176 12 000 91 71 84 -8 -9-10 000 92 12 20 -9.5 -11.9 29.04 6 8 182 18 000 88 70 72 -8 -9-10 000 93 12 21 -9.0 -11.5 29.04 6 10 194 30 000 87 55 66 -8 -9 -9 000 94 12 22 -8.3 -10.9 29.04 7 14 193 29 000 85 45 63 -8 -8 -9 000 95 12 23 -7.7 -10.7 29.04 6 13 190 26 000 81 41 69 -7 -7 -8 000 96 13 00 -7.4 -10.5 29.03 8 16 177 14 000 80 42 81 -7 -7 -8 000 97 13 01 -6.9 -9.9 29.02 7 17 184 21 000 80 48 65 -6 -7 -8 000 98 13 02 -6.6 -9.5 29.01 6 14 175 11 001 81 40 67 -5 -6 -7 000 99 13 03 -6.7 -9.5 29.01 9 17 156 353 000 81 49 65 -6 -6 -7 000 100 13 04 -6.8 -9.4 29.01 9 16 145 342 000 84 50 56 -5 -6 -8 000 101 13 05 -7.2 -10.0 29.01 8 18 157 353 001 82 45 58 -6 -6 -7 000 102 13 06 -7.8 -10.2 29.01 8 19 157 354 000 85 51 74 -5 -6 -7 000 103 13 07 -8.1 -10.7 29.01 7 18 155 352 000 84 56 72 -5 -6 -7 000 104 13 08 -8.4 -11.1 29.01 8 24 146 342 000 83 62 76 -5 -6 -7 000 105 13 09 -8.4 -10.9 29.02 10 23 134 331 000 85 63 86 -6 -7 -8 000 106 13 10 -8.8 -11.2 29.02 10 22 120 317 000 87 56 89 -6 -7 -8 000 107 13 11 -9.5 -10.7 29.03 9 19 121 317 001 99 60 88 -7 -7 -8 000 108 13 12 -9.9 -10.8 29.05 9 17 124 321 000 102 60 91 -8 -8 -9 000 109 13 13 -10.4 -11.6 29.05 9 19 125 322 000 100 77 70 -8 -8 -9 000 110 13 14 -10.4 -12.0 29.05 11 22 123 319 000 96 70 45 -8 -8 -9 000 111 13 15 -10.1 -12.0 29.05 10 21 132 328 000 92 71 54 -8 -9 -9 000 112 13 16 -9.9 -12.1 29.05 11 21 135 332 -001 91 72 52 -8 -9 -9 000 113 13 17 -9.5 -11.6 29.05 13 24 131 327 000 90 70 44 -9 -8 -9 000 114 13 18 -8.9 -11.4 29.06 15 25 127 324 000 86 67 49 -9 -7 -8 000 115 13 19 -8.1 -11.1 29.06 15 26 131 328 000 82 66 61 -8 -7 -7 000 116 13 20 -7.5 -10.6 29.06 17 27 135 331 -001 80 62 47 -8 -6 -7 000 117 13 21 -7.1 -10.1 29.06 17 27 130 326 000 81 60 40 -8 -6 -7 000 118 13 22 -6.7 -9.6 29.06 18 28 134 331 001 82 54 55 -7 -6 -6 000 119 13 23 -5.7 -8.5 29.05 19 28 131 327 -002 82 54 51 -7 -6 -6 000 120 14 00 -5.0 -7.8 29.05 18 26 128 324 000 81 63 96 -6 -6 -6 000 * 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.