USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-09-21/00 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 21 00 -11.7 -16.0 29.01 15 17 123 319 000 72 69 84 -12-13-14 000 1 21 01 -13.4 -16.5 29.01 11 25 124 320 -002 84 72 84 -12-13-14 001 2 21 02 -14.5 -17.6 29.00 12 28 128 324 -004 86 64 65 -12-13-14 000 3 21 03 -12.9 -16.9 29.01 17 33 124 321 000 77 59 78 -12-13-14 000 4 21 04 -12.1 -16.4 29.00 19 35 118 314 -006 74 59 84 -12-13-14 000 5 21 05 -12.5 -16.6 28.98 17 34 118 315 000 76 62 67 -12-13-15 000 6 21 06 -13.6 -18.2 29.03 18 33 118 314 -003 72 56 51 -13-14-15 000 7 21 07 -14.0 -18.7 29.02 18 33 123 319 -001 72 58 45 -14-14-16 000 8 21 08 -14.6 -19.2 28.97 20 32 114 310 -004 73 56 44 -15-15-15 000 9 21 09 -15.0 -19.3 28.99 20 32 120 317 -004 76 68 69 -15-16-16 000 10 21 10 -15.3 -19.1 28.99 19 31 124 321 -003 80 82 94 -16-16-17 000 11 21 11 -15.5 -18.6 29.01 20 32 121 317 -001 87 92 90 -16-17-18 003 12 21 12 -17.0 -20.0 29.01 18 28 110 306 -005 90101 87 -18-19-18 000 13 21 13 -18.3 -21.2 29.04 18 25 109 306 -001 92 99 98 -19-20-19 003 14 21 14 -19.1 -21.7 29.06 15 21 105 302 -001 95101101 -20-20-19 009 15 21 15 -21.0 -23.6 29.09 13 17 87 284 -004 96100100 -22-21-20 011 16 21 16 -22.3 -25.1 29.11 11 13 79 275 -001 96 98101 -22-20-20 011 17 21 17 -23.4 -26.2 29.13 8 10 82 278 -002 97 99100 -23-20-20 006 18 21 18 -24.0 -26.9 29.14 7 9 78 275 -002 96 99100 -23-21-20 006 19 21 19 -24.4 -27.4 29.15 5 6 64 261 002 96100102 -23-21-21 010 20 21 20 -24.7 -27.6 29.15 5 5 40 237 007 97 97102 -22-21-21 009 21 21 21 -24.8 -27.7 29.16 1 1 113 310 -007 97101 98 -24-22-21 007 22 21 22 -24.8 -27.7 29.15 1 2 111 308 000 98101101 -24-22-21 007 23 21 23 -24.8 -27.7 29.15 2 3 81 277 001 98101100 -23-22-21 003 24 22 00 -24.9 -27.8 29.15 3 4 65 262 -001 97101 99 -22-22-22 004 25 22 01 -25.2 -28.1 29.17 4 4 57 253 000 97100101 -23-22-22 003 26 22 02 -25.6 -28.6 29.16 1 2 46 243 -002 97103 54 -25-22-21 004 27 22 03 -26.5 -29.2 29.16 1 3 67 263 -002 101105 61 -25-23-21 001 28 22 04 -28.0 -29.8 29.15 1 2 74 271 -001 110101 84 -24-22-22 000 29 22 05 -29.6 -30.3 29.16 3 4 88 285 -003 126108 93 -25-23-23 000 30 22 06 -30.3 -31.9 29.17 4 4 78 275 000 125100102 -24-23-21 000 31 22 07 -30.1 -31.7 29.18 4 8 120 317 -001 119105 98 -26-24-22 000 32 22 08 -29.7 -32.1 29.16 4 8 71 267 -001 108 88 67 -25-22-20 000 33 22 09 -31.4 -32.8 29.16 8 12 147 344 002 123 98 71 -28-26-23 000 34 22 10 -33.4 -35.2 29.14 5 14 138 334 004 124 93 74 -27-25-23 000 35 22 11 -35.5 -37.4 29.14 6 16 159 356 003 124 91 63 -26-25-23 000 36 22 12 -35.4 -37.1 29.14 8 15 156 352 001 124105 57 -25-25-24 000 37 22 13 -35.2 -36.8 29.13 8 16 148 345 003 125 89 47 -27-25-23 000 38 22 14 -34.4 -35.5 29.12 10 19 155 351 001 132 90 45 -28-25-23 000 39 22 15 -34.6 -35.8 29.10 8 20 141 337 002 131 89 42 -26-24-23 000 40 22 16 -33.8 -34.7 29.09 9 20 155 352 008 133 68 40 -27-24-22 000 41 22 17 -33.3 -34.3 29.07 9 25 146 342 006 132 72 38 -26-24-23 000 42 22 18 -31.6 -32.8 29.06 11 24 146 342 006 126 79 38 -26-25-23 000 43 22 19 -31.4 -32.7 29.04 11 23 142 339 004 124 73 39 -26-23-20 000 44 22 20 -30.6 -32.6 29.01 11 25 137 333 001 113 52 42 -25-22-18 000 45 22 21 -30.2 -32.5 28.98 10 25 129 326 005 108 38 40 -24-20-16 000 46 22 22 -29.4 -32.2 28.96 11 26 127 324 -001 100 38 45 -23-21-17 000 47 22 23 -29.9 -32.4 28.95 9 25 126 323 000 105 39 46 -22-21-17 000 48 23 00 -31.1 -32.9 28.94 7 20 158 355 -002 115 41 42 -21-21-18 000 49 23 01 -30.0 -32.5 28.92 9 27 168 4 000 105 44 40 -21-21-18 000 50 23 02 -28.3 -31.4 28.90 11 33 177 14 000 96 45 42 -19-19-19 000 51 23 03 -30.2 -32.3 28.89 8 32 157 353 -002 109 47 44 -19-19-19 000 52 23 04 -30.9 -31.9 28.88 6 22 137 333 -013 126 41 42 -19-20-19 000 53 23 05 -29.9 -29.9 28.86 3 19 136 332 000 133 48 43 -18-18-18 000 54 23 06 -27.7 -29.7 28.86 11 34 124 320 -001 108 41 40 -19-20-20 000 55 23 07 -23.8 -29.0 28.84 17 35 107 304 -007 72 37 41 -19-19-19 000 56 23 08 -22.6 -28.4 28.83 18 35 109 306 -002 67 36 41 -19-19-18 000 57 23 09 -23.3 -28.7 28.82 18 36 108 305 -004 70 34 40 -19-19-18 000 58 23 10 -24.1 -29.3 28.82 16 34 109 305 -004 73 32 41 -19-19-17 000 59 23 11 -24.9 -29.8 28.82 15 34 115 312 -004 76 34 40 -19-20-19 000 60 23 12 -24.7 -29.7 28.81 16 35 110 307 000 75 31 39 -19-19-18 000 61 23 13 -24.4 -29.7 28.83 16 34 119 316 000 72 36 37 -20-20-20 000 62 23 14 -23.2 -29.2 28.82 16 36 123 320 000 66 40 38 -19-20-20 000 63 23 15 -22.6 -28.5 28.80 16 38 114 310 -001 66 37 41 -16-17-19 000 64 23 16 -21.6 -28.0 28.79 17 40 113 310 -003 62 38 44 -16-17-18 000 65 23 17 -22.3 -27.8 28.80 17 41 121 318 -002 69 40 48 -17-18-19 000 66 23 18 -20.8 -26.9 28.81 20 41 127 323 000 64 45 45 -18-19-20 000 67 23 19 -20.7 -26.7 28.81 23 43 124 320 000 66 47 46 -19-20-21 000 68 23 20 -20.9 -26.7 28.81 23 45 125 321 -001 67 48 48 -19-20-21 000 69 23 21 -20.3 -26.4 28.81 26 46 124 320 000 65 49 49 -19-20-21 000 70 23 22 -20.0 -26.0 28.82 24 45 122 318 000 65 51 51 -19-20-21 000 71 23 23 -19.9 -25.8 28.83 27 46 122 318 000 65 53 57 -19-20-21 000 72 24 00 -19.6 -25.6 28.84 27 45 122 318 000 66 55 61 -19-20-22 000 73 24 01 -19.9 -25.6 28.85 26 44 123 319 -003 68 55 61 -19-20-21 000 74 24 02 -19.6 -25.3 28.86 25 44 124 320 -001 67 54 58 -19-20-21 000 75 24 03 -19.4 -25.2 28.86 25 45 125 321 001 67 53 56 -18-19-21 000 76 24 04 -19.4 -25.1 28.86 25 44 126 323 -003 67 54 60 -18-19-21 000 77 24 05 -19.7 -25.3 28.88 24 43 127 323 000 69 55 61 -19-20-21 000 78 24 06 -20.0 -25.3 28.89 23 42 128 324 001 70 57 64 -19-20-21 000 79 24 07 -20.3 -25.6 28.90 23 41 128 325 002 72 57 67 -19-20-21 000 80 24 08 -20.8 -25.9 28.91 22 39 128 325 001 73 58 69 -20-20-21 000 81 24 09 -21.2 -26.0 28.91 21 38 130 326 000 75 59 71 -20-20-21 000 82 24 10 -21.4 -26.0 28.92 20 38 130 327 000 77 61 71 -20-20-21 000 83 24 11 -21.4 -25.9 28.94 20 38 131 327 -001 78 62 70 -20-19-21 000 84 24 12 -21.4 -25.8 28.96 20 38 131 327 000 79 62 68 -19-19-20 000 85 24 13 -21.2 -25.6 28.97 20 38 131 327 000 79 62 66 -19-19-20 000 86 24 14 -20.9 -25.3 28.98 20 38 131 327 000 78 61 65 -19-19-20 000 87 24 15 -20.7 -25.1 28.99 20 38 131 328 000 78 61 64 -19-19-20 000 88 24 16 -20.7 -25.1 29.00 20 37 133 330 000 78 61 64 -19-19-20 000 89 24 17 -20.5 -25.0 29.01 20 37 133 329 000 78 61 63 -19-19-20 000 90 24 18 -20.3 -24.7 29.02 20 37 133 329 000 78 61 62 -19-19-20 000 91 24 19 -20.1 -24.5 29.03 21 37 132 329 000 78 63 63 -19-19-20 000 92 24 20 -19.9 -24.3 29.05 21 37 132 329 000 78 65 64 -19-19-20 000 93 24 21 -19.7 -24.0 29.06 20 37 132 329 -001 79 66 64 -19-19-20 000 94 24 22 -19.2 -23.5 29.07 21 37 132 329 000 79 66 63 -18-19-20 000 95 24 23 -18.7 -23.0 29.08 22 38 131 327 000 78 66 62 -18-19-20 000 96 25 00 -18.1 -22.5 29.09 22 38 131 328 000 78 66 62 -18-18-20 000 97 25 01 -17.7 -22.1 29.10 22 38 130 326 000 77 66 61 -17-18-19 000 98 25 02 -17.6 -22.0 29.11 22 38 129 325 000 77 64 62 -17-18-19 000 99 25 03 -17.4 -21.8 29.12 22 38 127 323 000 77 63 62 -17-18-19 000 100 25 04 -16.9 -21.4 29.12 22 38 126 322 -001 76 62 61 -17-18-19 000 101 25 05 -16.9 -21.5 29.12 22 38 126 322 -001 75 60 58 -17-18-19 000 102 25 06 -17.0 -21.5 29.13 22 38 127 323 -001 75 58 56 -17-17-19 000 103 25 07 -16.9 -21.6 29.14 22 38 127 323 -001 74 57 56 -17-17-19 000 104 25 08 -17.2 -21.8 29.14 22 38 128 324 -001 75 57 54 -17-17-19 000 105 25 09 -17.8 -22.4 29.14 22 39 127 323 -002 75 57 51 -17-18-19 000 106 25 10 -17.4 -22.1 29.14 23 39 126 323 000 74 59 53 -17-18-19 000 107 25 11 -17.1 -22.2 29.15 24 41 125 322 001 71 59 51 -17-18-19 000 108 25 12 -16.9 -22.1 29.15 25 42 125 321 -001 70 57 48 -17-18-19 000 109 25 13 -16.7 -22.0 29.15 25 43 125 321 000 68 57 47 -16-18-19 000 110 25 14 -17.3 -22.6 29.15 24 43 126 322 000 70 57 48 -17-18-19 000 111 25 15 -17.5 -22.6 29.15 24 42 126 322 -001 70 57 48 -17-18-18 000 112 25 16 -17.6 -22.8 29.14 24 42 126 322 -002 70 56 48 -17-18-18 000 113 25 17 -17.7 -22.9 29.14 24 42 127 323 -003 70 55 46 -17-18-18 000 114 25 18 -17.7 -23.1 29.13 24 42 127 324 -003 69 53 44 -17-18-18 000 115 25 19 -17.5 -23.1 29.13 23 42 127 323 -003 67 51 42 -16-17-18 000 116 25 20 -17.4 -23.2 29.12 24 42 126 322 -003 66 47 39 -16-17-18 000 117 25 21 -17.1 -23.0 29.11 22 42 127 324 -003 64 44 39 -15-16-17 000 118 25 22 -16.6 -22.9 29.09 21 41 125 322 002 61 41 42 -14-15-16 000 119 25 23 -16.2 -22.8 29.07 20 43 119 316 -002 59 36 48 -13-14-15 000 120 26 00 -16.3 -22.6 29.07 21 42 128 324 -003 61 37 47 -13-14-15 000 * 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.