USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-12-22/00 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 22 00 -10.9 -14.7 29.31 1 2 2 198 000 71 58 44 -11-11-12 000 1 22 01 -10.6 -14.6 29.32 1 2 5 202 001 79 61 46 -11-11-12 000 2 22 02 -10.4 -14.0 29.31 2 2 7 204 000 80 60 45 -11-11-11 000 3 22 03 -10.4 -13.7 29.30 2 2 9 206 000 82 60 46 -11-11-11 000 4 22 04 -10.5 -13.2 29.30 2 3 10 207 000 85 60 46 -11-11-11 000 5 22 05 -10.9 -13.2 29.31 3 3 5 202 000 87 58 46 -11-11-11 000 6 22 06 -11.4 -13.6 29.30 3 3 358 194 000 90 58 45 -11-11-11 000 7 22 07 -12.0 -13.9 29.29 3 4 355 191 000 94 59 45 -11-11-11 000 8 22 08 -12.7 -14.2 29.29 3 4 350 186 000 99 61 44 -11-11-11 000 9 22 09 -13.4 -14.5 29.28 4 5 349 185 000 105 61 44 -11-11-12 000 10 22 10 -13.9 -14.8 29.29 4 4 351 188 000 109 61 43 -11-11-11 000 11 22 11 -14.4 -15.0 29.29 4 4 0 196 000 113 60 42 -11-11-11 000 12 22 12 -14.7 -15.3 29.29 3 3 21 217 000 114 61 44 -11-11-11 000 13 22 13 -16.0 -16.1 29.28 2 2 54 250 000 116 64 46 -12-12-12 000 14 22 14 -16.9 -17.0 29.30 1 2 46 243 000 117 61 45 -11-11-12 000 15 22 15 -17.1 -17.2 29.31 1 1 101 297 000 118 62 45 -12-12-12 000 16 22 16 -16.4 -16.9 29.30 2 2 102 299 000 113 63 45 -12-12-12 000 17 22 17 -15.5 -16.8 29.30 1 1 90 286 000 104 63 44 -12-12-12 000 18 22 18 -14.7 -16.3 29.29 1 1 87 283 000 100 64 44 -12-12-12 000 19 22 19 -13.9 -15.6 29.29 1 1 100 297 000 99 63 43 -12-12-12 000 20 22 20 -12.9 -14.7 29.30 1 1 121 317 -002 98 62 46 -12-12-12 000 21 22 21 -12.4 -14.2 29.30 0 1 47 243 -002 97 63 39 -12-12-12 000 22 22 22 -11.8 -13.6 29.30 0 0 251 88 001 96 65 39 -12-12-12 000 23 22 23 -11.5 -13.5 29.29 2 2 246 82 002 95 64 40 -12-12-12 000 24 23 00 -11.3 -13.2 29.29 1 2 212 49 001 94 68 38 -12-12-12 000 25 23 01 -11.1 -13.0 29.29 2 3 224 60 003 95 70 40 -12-12-12 000 26 23 02 -11.0 -12.9 29.29 3 4 229 66 002 94 63 51 -12-12-12 000 27 23 03 -11.2 -12.5 29.29 3 3 198 34 000 100 72 54 -12-12-12 000 28 23 04 -12.0 -12.1 29.28 3 3 190 26 000 112 78 49 -12-12-12 000 29 23 05 -11.7 -11.8 29.28 3 4 190 26 001 112 86 50 -13-11-11 000 30 23 06 -11.1 -12.1 29.28 3 5 183 19 000 102 83 51 -12-12-12 000 31 23 07 -11.7 -13.1 29.28 3 4 165 2 000 100 65 40 -12-11-11 000 32 23 08 -12.2 -12.8 29.28 1 2 140 337 002 108 60 36 -12-11-10 000 33 23 09 -13.1 -13.5 29.28 3 4 165 2 000 113 64 34 -12-11-11 000 34 23 10 -14.5 -14.7 29.27 2 4 180 16 002 115 64 38 -12-11-11 000 35 23 11 -15.8 -15.9 29.27 1 4 142 338 -001 116 65 33 -12-11-11 000 36 23 12 -16.8 -16.9 29.28 1 3 124 320 -001 117 70 40 -12-12-12 000 37 23 13 -16.8 -17.0 29.28 1 5 144 341 001 117 69 35 -12-12-12 000 38 23 14 -17.0 -17.1 29.29 2 5 165 1 -001 118 69 59 -12-12-12 000 39 23 15 -15.8 -15.9 29.29 2 8 171 7 002 116 74 62 -12-12-13 000 40 23 16 -13.9 -14.8 29.29 4 7 148 344 -001 107 66 74 -12-12-12 000 41 23 17 -13.3 -14.5 29.30 6 10 151 348 001 103 79 53 -12-12-13 000 42 23 18 -12.9 -14.7 29.30 6 12 142 338 -002 97 69 50 -11-12-12 000 43 23 19 -12.1 -14.7 29.30 8 13 152 349 -001 88 77 52 -11-12-12 000 44 23 20 -11.4 -14.1 29.29 7 13 155 351 005 86 48 38 -11-10-11 000 45 23 21 -10.5 -13.4 29.29 9 16 162 358 001 84 38 41 -11-10-10 000 46 23 22 -10.0 -13.3 29.30 12 20 157 353 000 80 45 42 -11-10-10 000 47 23 23 -9.6 -13.1 29.30 12 20 143 339 -003 79 42 43 -10 -9-10 000 48 24 00 -9.3 -12.6 29.31 12 19 137 334 -006 80 47 48 -10 -9-10 000 49 24 01 -9.4 -12.6 29.31 11 20 126 322 003 81 53 48 -10-10 -9 000 50 24 02 -9.1 -12.2 29.31 11 20 125 321 000 82 44 43 -9 -8 -9 000 51 24 03 -8.9 -11.8 29.32 10 18 137 333 -002 83 43 37 -8 -8 -9 000 52 24 04 -8.7 -11.7 29.32 9 18 146 342 -004 82 38 30 -8 -8 -8 000 53 24 05 -8.6 -11.7 29.31 7 21 143 339 -008 80 25 78 -6 -6 -7 000 54 24 06 -7.7 -10.0 29.30 8 26 152 348 -004 87 60 53 -5 -5 -5 000 55 24 07 -5.2 -7.9 29.30 18 31 142 339 -002 81 66 61 -5 -5 -5 000 56 24 08 -5.4 -8.7 29.31 22 36 140 337 -005 78 67 54 -5 -6 -5 000 57 24 09 -5.7 -9.7 29.32 24 42 134 331 002 72 56 48 -5 -6 -5 000 58 24 10 -5.1 -10.2 29.32 25 45 133 329 001 64 46 47 -4 -5 -6 000 59 24 11 -5.3 -10.4 29.32 24 44 132 328 001 64 42 39 -4 -5 -6 000 60 24 12 -5.7 -10.6 29.33 22 42 136 332 003 66 50 43 -5 -6 -6 000 61 24 13 -5.7 -10.7 29.34 23 42 135 331 -001 65 45 42 -5 -5 -7 000 62 24 14 -5.9 -10.7 29.34 22 41 135 331 000 67 51 42 -5 -6 -6 000 63 24 15 -6.1 -10.5 29.35 21 39 137 334 004 69 54 45 -6 -6 -7 000 64 24 16 -5.9 -10.7 29.35 22 40 131 328 005 67 49 43 -5 -6 -7 000 65 24 17 -5.8 -10.6 29.35 22 39 130 326 004 66 50 38 -5 -6 -7 000 66 24 18 -5.5 -10.3 29.36 20 38 130 326 000 66 48 37 -5 -6 -7 000 67 24 19 -5.3 -10.0 29.36 20 37 131 328 000 66 47 35 -5 -6 -7 000 68 24 20 -5.0 -9.9 29.36 21 36 131 327 000 66 49 34 -5 -6 -6 000 69 24 21 -4.9 -9.4 29.36 19 35 132 328 001 67 52 33 -5 -6 -7 000 70 24 22 -4.7 -9.2 29.36 19 34 130 326 000 68 55 34 -5 -6 -7 000 71 24 23 -4.6 -8.9 29.36 19 32 129 326 -002 70 58 34 -5 -6 -6 000 72 25 00 -4.7 -8.5 29.36 17 29 130 326 000 73 60 33 -5 -6 -6 000 73 25 01 -4.7 -8.2 29.35 16 28 127 324 000 75 56 33 -5 -6 -6 000 74 25 02 -4.7 -8.0 29.35 15 26 131 328 000 77 59 35 -5 -6 -6 000 75 25 03 -4.9 -7.9 29.34 14 25 132 329 000 79 60 35 -5 -6 -6 000 76 25 04 -4.9 -8.1 29.34 13 24 129 325 003 77 50 39 -5 -5 -5 000 77 25 05 -5.3 -8.1 29.33 11 22 138 334 005 80 52 40 -5 -5 -5 000 78 25 06 -5.8 -8.4 29.33 10 21 136 332 006 82 50 34 -5 -5 -5 000 79 25 07 -6.1 -9.0 29.33 10 22 137 334 005 80 50 30 -4 -5 -5 000 80 25 08 -6.5 -9.5 29.33 10 22 136 332 004 80 53 26 -4 -5 -6 000 81 25 09 -7.3 -10.1 29.33 8 22 153 349 003 81 54 27 -4 -5 -6 000 82 25 10 -8.5 -10.9 29.33 7 18 171 7 002 85 43 27 -4 -4 -5 000 83 25 11 -8.8 -11.3 29.34 8 20 166 2 002 85 47 28 -5 -5 -5 000 84 25 12 -9.0 -11.8 29.33 7 22 155 351 002 82 43 29 -5 -5 -5 000 85 25 13 -9.2 -11.9 29.33 7 21 156 352 001 83 42 29 -5 -5 -5 000 86 25 14 -8.8 -11.9 29.32 10 24 158 354 -002 80 47 31 -6 -5 -5 000 87 25 15 -8.2 -11.5 29.32 10 25 139 335 001 79 45 31 -6 -5 -5 000 88 25 16 -8.0 -11.1 29.32 9 25 144 340 002 80 42 33 -6 -5 -5 000 89 25 17 -7.4 -10.9 29.31 10 28 113 309 006 76 31 33 -5 -4 -4 000 90 25 18 -6.9 -10.3 29.32 10 26 147 343 001 77 45 35 -6 -6 -5 000 91 25 19 -6.3 -10.3 29.32 14 27 133 330 000 72 43 37 -6 -6 -5 000 92 25 20 -5.9 -9.6 29.32 11 25 137 333 001 74 41 39 -6 -5 -5 000 93 25 21 -5.3 -9.6 29.32 13 28 130 326 002 69 42 40 -5 -5 -5 000 94 25 22 -5.1 -9.1 29.31 13 29 129 325 002 71 33 40 -5 -4 -5 000 95 25 23 -4.9 -8.2 29.31 11 26 147 344 002 76 47 42 -5 -5 -5 000 96 26 00 -4.4 -8.2 29.31 13 27 140 336 001 72 57 35 -4 -5 -6 000 97 26 01 -4.4 -7.7 29.30 12 28 133 329 001 76 45 34 -4 -4 -5 000 98 26 02 -4.3 -7.3 29.30 12 24 144 340 001 78 57 33 -4 -5 -5 000 99 26 03 -4.3 -7.1 29.30 12 25 139 336 001 80 60 41 -4 -5 -4 000 100 26 04 -4.3 -7.1 29.30 12 25 138 335 002 80 62 46 -4 -5 -4 000 101 26 05 -4.5 -7.2 29.29 12 24 139 336 001 81 63 44 -4 -5 -5 000 102 26 06 -4.8 -7.2 29.30 12 24 142 338 002 83 64 45 -4 -5 -5 000 103 26 07 -5.0 -7.3 29.30 12 24 143 340 002 85 66 44 -4 -5 -5 000 104 26 08 -5.4 -7.5 29.30 12 25 144 340 001 86 65 45 -4 -4 -5 000 105 26 09 -5.4 -7.9 29.30 14 27 143 339 002 83 60 43 -4 -4 -5 000 106 26 10 -5.7 -8.5 29.30 14 28 141 337 001 81 60 43 -4 -4 -5 000 107 26 11 -5.8 -8.9 29.30 14 28 142 338 000 78 60 43 -4 -4 -5 000 108 26 12 -6.2 -9.1 29.30 14 27 145 342 001 80 63 42 -5 -5 -5 000 109 26 13 -6.3 -9.1 29.30 13 28 147 343 005 82 65 43 -5 -5 -5 000 110 26 14 -6.2 -9.2 29.30 15 29 143 340 005 80 64 44 -5 -5 -5 000 111 26 15 -6.1 -9.1 29.30 15 29 141 337 003 80 62 42 -6 -5 -5 000 112 26 16 -5.8 -8.9 29.30 16 30 136 332 001 79 61 42 -5 -5 -5 000 113 26 17 -5.5 -8.7 29.30 17 31 135 332 000 78 61 47 -5 -5 -5 000 114 26 18 -5.2 -8.4 29.30 18 30 135 332 001 78 63 50 -5 -6 -5 000 115 26 19 -5.0 -8.0 29.30 18 30 135 331 002 79 63 50 -5 -6 -5 000 116 26 20 -4.7 -7.7 29.31 18 30 133 330 001 79 66 49 -5 -6 -5 000 117 26 21 -4.2 -7.4 29.31 17 30 131 327 002 77 64 50 -4 -5 -5 000 118 26 22 -4.0 -7.1 29.31 17 29 131 327 003 77 65 51 -4 -5 -5 000 119 26 23 -3.7 -6.7 29.31 17 28 133 329 003 79 69 51 -4 -5 -5 000 120 27 00 -3.5 -6.3 29.31 17 28 134 330 002 79 72 49 -4 -5 -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.