USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-12-22/12 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 12 -16.3 -18.7 29.29 2 2 334 171 000 87 62 40 -13-12-12 000 1 22 13 -15.6 -17.0 29.30 1 1 336 172 000 103 66 43 -13-12-12 000 2 22 14 -16.5 -16.7 29.30 1 1 339 176 -001 116 68 44 -13-12-12 000 3 22 15 -17.3 -17.8 29.30 0 0 30 226 001 118 70 46 -13-12-13 000 4 22 16 -17.8 -17.9 29.31 2 2 38 235 000 118 68 45 -13-12-12 000 5 22 17 -17.8 -17.9 29.31 1 1 51 247 000 119 67 45 -13-12-12 000 6 22 18 -17.5 -17.7 29.32 0 0 191 27 000 118 69 43 -13-12-13 000 7 22 19 -16.5 -17.7 29.30 0 1 222 58 000 107 71 40 -13-13-13 000 8 22 20 -15.6 -16.9 29.30 0 1 212 48 000 103 73 39 -13-13-13 000 9 22 21 -15.0 -16.5 29.30 2 2 111 307 001 101 77 39 -14-13-13 000 10 22 22 -14.3 -16.2 29.30 1 1 28 224 000 98 70 41 -13-13-13 000 11 22 23 -13.7 -15.5 29.29 1 1 268 104 000 97 68 43 -13-13-13 000 12 23 00 -13.3 -15.4 29.28 2 3 281 117 002 95 65 40 -13-12-12 000 13 23 01 -13.1 -15.1 29.30 2 3 203 39 002 96 78 40 -14-13-13 000 14 23 02 -13.0 -15.1 29.30 2 2 149 345 000 95 77 48 -14-13-13 000 15 23 03 -12.9 -15.0 29.31 1 2 178 15 -003 95 76 47 -13-13-13 000 16 23 04 -13.0 -15.0 29.30 1 1 220 56 000 95 71 48 -13-13-13 000 17 23 05 -13.3 -15.1 29.29 3 3 207 43 -001 96 73 42 -13-13-13 000 18 23 06 -13.9 -15.6 29.29 3 4 191 28 000 98 75 41 -14-13-12 000 19 23 07 -14.5 -16.0 29.29 4 5 157 354 000 102 83 35 -14-14-12 000 20 23 08 -15.0 -16.0 29.28 3 3 166 2 002 108 82 32 -14-13-12 000 21 23 09 -15.8 -16.4 29.29 3 4 166 3 001 115 82 32 -14-13-13 000 22 23 10 -16.4 -17.1 29.28 3 4 160 356 000 116 83 51 -14-13-13 000 23 23 11 -17.2 -17.4 29.28 2 3 163 359 002 118 74 51 -14-13-13 000 24 23 12 -18.4 -18.6 29.27 1 3 148 345 001 119 70 36 -14-13-12 000 25 23 13 -18.6 -18.7 29.28 1 3 190 27 002 119 71 35 -13-12-12 000 26 23 14 -18.9 -19.1 29.29 2 4 149 345 -001 120 71 42 -13-12-12 000 27 23 15 -18.2 -18.4 29.29 2 7 161 358 -005 119 68 63 -13-13-12 000 28 23 16 -17.3 -17.9 29.29 3 10 172 9 -004 114 85 60 -14-13-13 000 29 23 17 -15.4 -17.2 29.30 4 11 168 4 000 99 60 49 -13-13-13 000 30 23 18 -14.4 -16.6 29.30 5 14 170 7 -001 95 49 47 -12-12-12 000 31 23 19 -13.2 -15.8 29.30 8 16 166 3 -002 89 57 43 -11-12-12 000 32 23 20 -12.0 -15.1 29.30 9 18 168 4 001 84 42 43 -11-10-11 000 33 23 21 -11.3 -14.8 29.29 10 20 155 352 003 81 37 41 -11-10-11 000 34 23 22 -11.2 -14.7 29.29 13 22 135 332 -003 79 45 51 -12-10-11 000 35 23 23 -11.1 -14.6 29.30 13 20 129 325 -004 80 54 60 -12-10-11 000 36 24 00 -10.7 -14.0 29.31 13 22 130 327 000 81 53 54 -11-11-11 000 37 24 01 -10.2 -13.5 29.31 12 21 130 326 -003 80 51 58 -10 -9-10 000 38 24 02 -9.8 -13.0 29.31 11 19 135 331 000 81 51 50 -8 -9-10 000 39 24 03 -9.7 -12.8 29.31 10 19 140 336 000 82 42 39 -8 -8 -9 000 40 24 04 -9.6 -13.0 29.31 10 21 136 333 001 79 35 27 -8 -8 -9 000 41 24 05 -9.7 -12.8 29.31 8 21 140 336 -003 81 25 47 -7 -7 -8 000 42 24 06 -9.6 -12.5 29.30 7 20 150 346 -002 82 50 54 -5 -6 -7 000 43 24 07 -7.7 -10.2 29.29 12 28 147 344 -003 86 44 51 -5 -5 -6 000 44 24 08 -6.8 -9.4 29.29 16 31 141 337 000 84 62 52 -6 -5 -5 000 45 24 09 -6.7 -9.9 29.30 20 35 138 334 000 79 58 52 -6 -5 -5 000 46 24 10 -6.8 -10.5 29.30 22 38 135 331 -001 75 53 45 -6 -6 -5 000 47 24 11 -6.7 -10.9 29.31 23 41 135 331 004 71 52 44 -6 -6 -5 000 48 24 12 -6.4 -11.1 29.31 23 42 132 329 000 67 49 44 -5 -6 -6 000 49 24 13 -6.3 -11.1 29.32 23 41 131 328 -004 67 50 43 -5 -6 -6 000 50 24 14 -6.2 -11.2 29.33 23 41 129 326 000 66 47 41 -5 -6 -6 000 51 24 15 -6.5 -11.0 29.34 22 39 130 326 003 68 49 42 -6 -6 -5 000 52 24 16 -6.4 -11.0 29.35 22 37 129 325 000 68 48 44 -6 -6 -5 000 53 24 17 -6.6 -10.7 29.36 20 35 130 326 001 72 48 44 -6 -6 -5 000 54 24 18 -6.5 -10.4 29.36 20 34 134 330 002 73 56 41 -6 -7 -6 000 55 24 19 -6.2 -10.3 29.36 19 34 131 327 001 72 51 33 -6 -7 -6 000 56 24 20 -5.9 -9.9 29.36 19 33 130 326 002 72 53 35 -6 -7 -6 000 57 24 21 -5.6 -9.7 29.36 19 32 128 324 000 71 50 34 -6 -6 -6 000 58 24 22 -5.4 -9.3 29.37 17 29 130 326 000 72 50 33 -5 -6 -6 000 59 24 23 -5.3 -9.0 29.37 17 29 128 324 -001 74 49 32 -5 -6 -6 000 60 25 00 -5.1 -8.7 29.36 16 28 126 323 -005 74 48 29 -5 -6 -6 000 61 25 01 -5.0 -8.5 29.36 15 26 127 323 -006 75 50 27 -5 -6 -5 000 62 25 02 -5.1 -8.3 29.36 13 24 129 325 -004 77 52 26 -5 -6 -6 000 63 25 03 -5.2 -8.2 29.36 12 23 130 327 -001 79 53 25 -5 -6 -5 000 64 25 04 -5.5 -8.4 29.35 11 22 130 326 000 81 52 24 -5 -6 -5 000 65 25 05 -5.8 -8.6 29.35 11 22 131 328 -002 81 53 26 -5 -6 -5 000 66 25 06 -6.3 -9.0 29.35 8 21 131 328 003 81 40 28 -4 -5 -5 000 67 25 07 -7.0 -9.8 29.35 7 21 137 333 005 80 41 31 -4 -5 -5 000 68 25 08 -7.9 -10.4 29.35 8 18 162 359 004 84 49 18 -4 -5 -5 000 69 25 09 -8.5 -11.2 29.35 7 18 163 359 002 82 45 18 -4 -5 -5 000 70 25 10 -8.8 -11.6 29.35 8 18 164 0 001 82 42 19 -4 -4 -5 000 71 25 11 -9.5 -11.9 29.35 7 21 159 355 002 85 43 19 -4 -4 -5 000 72 25 12 -9.4 -12.1 29.36 9 21 154 350 002 84 42 27 -4 -5 -5 000 73 25 13 -9.5 -12.2 29.35 9 22 156 352 004 84 41 30 -5 -5 -5 000 74 25 14 -9.0 -12.0 29.35 10 26 146 342 004 81 45 31 -5 -5 -5 000 75 25 15 -8.2 -11.7 29.35 11 26 136 332 007 77 44 32 -6 -5 -5 000 76 25 16 -8.1 -11.3 29.35 11 26 144 340 005 79 47 32 -6 -6 -5 000 77 25 17 -7.6 -10.8 29.35 12 26 141 337 006 79 47 35 -7 -6 -5 000 78 25 18 -7.2 -10.4 29.34 12 24 131 328 004 78 40 37 -7 -5 -5 000 79 25 19 -6.8 -10.0 29.34 11 23 131 327 003 78 40 34 -6 -5 -5 000 80 25 20 -6.6 -9.6 29.34 11 22 139 336 004 80 46 34 -7 -6 -5 000 81 25 21 -6.2 -9.3 29.34 13 24 137 334 003 79 52 33 -7 -6 -5 000 82 25 22 -6.0 -9.0 29.33 12 23 129 326 003 79 37 35 -6 -5 -5 000 83 25 23 -5.6 -8.7 29.33 13 24 133 330 005 79 37 35 -6 -5 -5 000 84 26 00 -5.4 -8.4 29.33 13 23 137 334 002 80 52 36 -6 -6 -5 000 85 26 01 -5.4 -8.2 29.32 14 23 136 332 000 82 52 38 -6 -6 -5 000 86 26 02 -5.4 -8.0 29.32 12 23 135 331 001 83 51 40 -6 -6 -5 000 87 26 03 -5.4 -7.8 29.31 10 20 135 332 002 84 47 43 -5 -5 -4 000 88 26 04 -5.5 -7.7 29.31 10 20 147 344 002 86 52 44 -5 -5 -5 000 89 26 05 -5.6 -7.8 29.30 11 21 146 342 001 86 48 42 -5 -5 -5 000 90 26 06 -5.9 -8.1 29.30 10 21 140 337 000 86 45 36 -5 -4 -5 000 91 26 07 -6.6 -8.6 29.30 11 19 163 0 003 88 57 36 -6 -5 -4 000 92 26 08 -6.6 -8.9 29.29 11 23 146 343 001 86 51 35 -5 -5 -4 000 93 26 09 -6.8 -9.3 29.29 12 24 140 336 000 85 53 35 -5 -4 -4 000 94 26 10 -7.0 -9.5 29.30 12 24 137 333 -001 84 53 38 -4 -4 -4 000 95 26 11 -7.4 -10.0 29.30 11 24 145 341 001 84 59 38 -5 -5 -5 000 96 26 12 -7.6 -10.2 29.30 11 23 142 339 001 84 58 40 -5 -5 -5 000 97 26 13 -7.6 -10.3 29.29 12 25 145 341 000 83 58 46 -6 -5 -5 000 98 26 14 -7.3 -10.4 29.28 12 26 146 342 001 80 56 45 -5 -5 -5 000 99 26 15 -7.1 -10.3 29.28 12 28 145 342 -001 79 60 46 -5 -6 -5 000 100 26 16 -6.6 -9.9 29.27 13 28 143 339 000 78 60 48 -5 -6 -5 000 101 26 17 -6.2 -9.4 29.27 15 27 139 335 001 78 66 49 -6 -6 -6 000 102 26 18 -6.1 -8.9 29.27 15 26 137 334 000 81 69 53 -6 -6 -6 000 103 26 19 -5.8 -8.5 29.27 16 26 136 333 001 82 67 55 -6 -6 -6 000 104 26 20 -5.5 -8.2 29.27 17 26 137 333 000 82 67 51 -6 -6 -6 000 105 26 21 -5.3 -7.8 29.28 17 25 138 334 000 83 74 50 -6 -7 -6 000 106 26 22 -5.0 -7.5 29.28 16 25 137 333 000 83 75 51 -6 -7 -6 000 107 26 23 -4.7 -7.2 29.28 16 25 137 333 000 83 74 51 -5 -6 -6 000 108 27 00 -4.5 -6.9 29.29 16 25 136 333 000 84 73 50 -5 -6 -6 000 109 27 01 -4.3 -6.6 29.28 15 25 136 333 -003 84 72 49 -5 -6 -5 000 110 27 02 -4.1 -6.4 29.28 15 24 136 332 -005 85 69 48 -5 -5 -5 000 111 27 03 -4.1 -6.2 29.28 14 24 135 331 -004 85 67 47 -4 -5 -5 000 112 27 04 -4.2 -6.2 29.28 14 24 134 330 000 86 62 44 -4 -4 -4 000 113 27 05 -4.4 -6.4 29.28 13 23 133 329 000 87 56 36 -4 -4 -3 000 114 27 06 -4.7 -6.6 29.29 12 22 137 333 001 88 54 35 -4 -4 -3 000 115 27 07 -5.0 -7.0 29.29 12 23 135 331 002 87 52 32 -4 -3 -3 000 116 27 08 -5.3 -7.5 29.29 11 24 133 330 001 85 48 32 -4 -3 -3 000 117 27 09 -5.6 -8.0 29.29 11 25 133 329 001 84 49 33 -4 -3 -3 000 118 27 10 -6.1 -8.6 29.29 10 25 136 332 003 83 50 30 -4 -3 -3 000 119 27 11 -6.2 -9.0 29.29 12 26 134 331 001 81 49 32 -4 -3 -3 000 120 27 12 -6.6 -9.3 29.30 11 24 145 341 002 82 54 31 -4 -4 -3 000 * 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.