USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-09-22/00 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 -22.1 -24.9 29.12 2 2 93 289 000 97 94 87 -21-21-20 000 1 22 01 -22.9 -25.1 29.13 3 4 135 332 000 103 94 81 -21-21-20 000 2 22 02 -26.1 -26.9 29.15 6 7 145 341 000 127 97 68 -22-21-21 000 3 22 03 -27.4 -29.6 29.14 11 22 131 327 003 107 90 62 -22-22-21 000 4 22 04 -29.7 -30.5 29.11 5 12 89 285 -001 128 28 30 -20-19-20 000 5 22 05 -31.5 -32.9 29.14 6 8 188 24 -002 126 42 31 -22-21-21 000 6 22 06 -33.3 -34.6 29.15 6 10 188 25 -003 132 44 40 -21-20-19 000 7 22 07 -35.4 -36.8 29.10 4 16 147 343 002 130 91 85 -22-20-20 000 8 22 08 -36.8 -38.7 29.11 5 16 142 338 003 124 90 84 -22-20-20 000 9 22 09 -35.2 -36.6 29.10 7 9 157 354 001 131 91 41 -22-21-20 000 10 22 10 -33.6 -35.2 29.11 6 11 125 321 000 124 98 68 -22-21-21 000 11 22 11 -34.6 -36.4 29.11 5 13 134 330 000 124101 49 -23-22-21 000 12 22 12 -34.3 -36.1 29.10 5 15 111 307 000 124100 63 -22-22-22 000 13 22 13 -36.3 -38.1 29.09 5 16 137 334 000 124103 68 -23-22-22 000 14 22 14 -37.4 -38.9 29.08 3 18 151 348 001 124105 75 -23-23-23 000 15 22 15 -35.4 -36.4 29.07 8 21 134 330 000 134 91 70 -25-23-22 000 16 22 16 -34.4 -35.6 29.06 9 16 126 323 005 131 85 57 -25-22-21 000 17 22 17 -34.8 -36.2 29.05 10 21 136 332 006 128 95 41 -29-23-21 000 18 22 18 -35.8 -37.4 29.03 7 16 132 328 001 128 83 44 -27-22-20 000 19 22 19 -35.9 -37.5 29.02 7 17 118 314 000 126 67 41 -27-23-20 000 20 22 20 -36.5 -38.2 29.01 5 14 144 341 -001 124 62 40 -28-23-19 000 21 22 21 -36.7 -38.6 28.99 7 13 157 353 000 124 44 39 -28-22-19 000 22 22 22 -36.7 -38.7 28.96 6 13 165 1 000 124 38 38 -27-20-19 000 23 22 23 -36.6 -38.5 28.95 7 12 174 10 -004 124 45 43 -26-20-18 000 24 23 00 -35.9 -37.7 28.94 7 18 173 10 -003 124 48 44 -26-20-19 000 25 23 01 -35.0 -37.0 28.92 7 12 167 3 -009 119 49 45 -24-20-20 000 26 23 02 -38.6 -40.3 28.90 7 12 200 36 000 127 45 42 -22-19-20 000 27 23 03 -38.9 -40.8 28.89 6 13 167 4 -001 129 45 42 -21-18-18 000 28 23 04 -35.1 -36.7 28.87 7 24 158 355 -001 124 42 43 -21-19-19 000 29 23 05 -36.4 -38.1 28.86 7 22 183 19 -007 125 56 45 -23-20-19 000 30 23 06 -38.0 -39.7 28.86 7 12 173 9 -005 127 45 42 -24-20-18 000 31 23 07 -34.8 -35.1 28.85 6 10 162 358 000 138 39 42 -20-19-19 000 32 23 08 -34.8 -35.5 28.84 6 12 181 17 001 133 36 43 -20-19-18 000 33 23 09 -34.8 -35.5 28.83 8 25 179 15 001 135 35 43 -20-20-19 000 34 23 10 -34.8 -35.5 28.83 8 21 172 8 -004 138 41 43 -20-20-20 000 35 23 11 -36.0 -37.0 28.82 6 22 147 344 -003 133 40 43 -19-20-19 000 36 23 12 -35.9 -36.6 28.82 8 25 172 8 -003 140 36 42 -19-20-18 000 37 23 13 -31.3 -32.2 28.82 10 33 135 331 -003 124 38 40 -19-20-19 000 38 23 14 -25.9 -30.7 28.81 13 31 101 297 -002 75 43 36 -17-18-19 000 39 23 15 -32.2 -33.8 28.81 10 24 156 353 000 119 40 43 -18-17-18 000 40 23 16 -31.3 -32.2 28.80 10 34 135 331 -006 128 36 40 -16-17-19 000 41 23 17 -32.5 -32.8 28.79 5 20 164 0 001 136 37 44 -16-17-17 000 42 23 18 -28.9 -30.1 28.79 12 30 147 344 005 121 31 44 -15-16-17 000 43 23 19 -28.0 -29.6 28.79 10 41 142 339 015 113 36 41 -17-16-17 000 44 23 20 -25.7 -29.1 28.78 12 42 132 329 005 91 41 44 -17-18-19 000 45 23 21 -21.4 -27.2 28.79 20 41 117 314 002 66 48 46 -19-20-20 000 46 23 22 -21.9 -27.5 28.80 20 37 126 322 -003 69 54 58 -20-21-22 000 47 23 23 -22.7 -27.7 28.81 16 36 129 326 -003 74 57 65 -20-21-22 000 48 24 00 -23.1 -27.5 28.81 14 34 126 322 001 79 59 70 -20-21-22 000 49 24 01 -22.5 -26.9 28.81 16 34 124 321 009 79 61 72 -19-20-21 000 50 24 02 -23.6 -27.1 28.83 13 30 128 324 006 89 64 73 -20-21-21 000 51 24 03 -24.6 -27.2 28.83 12 28 120 316 000 99 64 73 -20-21-21 000 52 24 04 -25.9 -27.4 28.85 12 26 113 309 000 113 65 77 -21-21-22 000 53 24 05 -27.6 -28.2 28.87 10 24 116 312 -002 129 69 82 -23-22-22 000 54 24 06 -29.2 -29.9 28.89 9 20 118 314 000 131 72 84 -23-22-22 000 55 24 07 -30.8 -31.6 28.91 8 17 118 314 000 134 74 80 -24-22-21 000 56 24 08 -31.9 -32.6 28.93 8 17 124 320 000 135 75 73 -24-22-21 000 57 24 09 -32.4 -33.2 28.94 8 18 127 323 -001 135 75 59 -24-22-21 000 58 24 10 -32.4 -33.1 28.96 8 19 127 323 -001 135 74 47 -23-21-21 000 59 24 11 -31.7 -32.4 28.98 9 20 132 328 -001 134 75 43 -23-21-20 000 60 24 12 -29.7 -30.3 28.99 11 25 134 330 000 132 76 39 -22-21-20 000 61 24 13 -28.6 -29.2 29.01 12 27 132 328 000 131 73 42 -21-20-20 000 62 24 14 -27.1 -27.7 29.02 12 28 132 329 000 129 68 57 -20-20-20 000 63 24 15 -22.5 -24.5 29.02 14 31 132 328 000 105 66 60 -18-19-20 000 64 24 16 -19.4 -23.1 29.02 17 32 132 328 -001 84 64 60 -17-18-20 000 65 24 17 -18.1 -22.2 29.02 18 34 131 327 000 79 64 59 -17-18-20 000 66 24 18 -19.0 -23.1 29.03 17 34 131 328 -001 80 62 58 -17-18-20 000 67 24 19 -19.2 -23.0 29.04 16 34 131 327 000 83 61 57 -17-18-19 000 68 24 20 -18.7 -23.0 29.04 17 35 129 326 000 78 61 59 -17-18-19 000 69 24 21 -17.5 -21.9 29.04 20 36 129 326 000 76 65 66 -17-18-19 000 70 24 22 -16.9 -21.3 29.05 22 37 127 324 -001 76 70 75 -17-18-19 000 71 24 23 -16.7 -21.4 29.05 24 39 124 321 -003 74 68 70 -17-18-19 000 72 25 00 -16.0 -20.8 29.07 24 38 124 320 000 73 66 55 -16-17-19 000 73 25 01 -15.6 -20.4 29.08 23 38 124 320 -001 72 61 50 -16-17-18 000 74 25 02 -15.3 -19.8 29.08 22 37 127 323 000 74 54 50 -15-16-17 000 75 25 03 -15.8 -20.4 29.08 22 38 130 326 000 74 46 47 -15-15-16 000 76 25 04 -16.4 -21.1 29.07 21 36 129 325 002 74 41 44 -15-14-15 000 77 25 05 -16.8 -21.6 29.07 21 39 131 328 001 73 51 41 -15-15-15 000 78 25 06 -15.4 -20.7 29.06 23 43 131 327 002 68 49 42 -14-14-16 000 79 25 07 -14.3 -19.8 29.04 24 44 130 327 003 66 48 38 -13-14-15 000 80 25 08 -14.1 -19.8 29.03 25 45 129 325 001 65 51 41 -13-14-16 000 81 25 09 -15.3 -20.6 29.01 23 44 128 325 -006 68 53 46 -14-15-16 000 82 25 10 -15.8 -20.9 29.01 24 44 131 327 -003 70 56 48 -15-16-16 000 83 25 11 -15.0 -20.3 29.00 27 46 130 326 -003 68 54 49 -14-15-16 000 84 25 12 -14.8 -20.2 29.00 28 46 130 327 002 67 55 50 -14-15-16 000 85 25 13 -15.3 -20.5 28.99 27 46 131 327 003 69 57 54 -14-15-16 000 86 25 14 -14.4 -19.7 28.98 27 46 131 327 001 68 60 64 -14-15-16 000 87 25 15 -14.5 -19.4 28.98 27 46 131 328 001 71 64 68 -14-15-15 000 88 25 16 -15.0 -19.3 28.97 25 45 134 330 000 75 68 82 -14-15-16 000 89 25 17 -14.8 -19.3 28.97 23 43 134 330 000 74 63 72 -14-15-16 000 90 25 18 -14.8 -19.6 28.96 23 43 133 329 000 72 57 54 -14-15-16 000 91 25 19 -14.5 -19.4 28.95 21 40 131 327 001 71 56 48 -14-15-16 000 92 25 20 -15.0 -19.9 28.95 21 39 135 331 003 71 60 56 -15-16-17 000 93 25 21 -15.7 -20.7 28.94 22 39 129 325 002 71 58 48 -15-16-17 000 94 25 22 -15.7 -20.8 28.94 23 37 129 325 -005 70 56 52 -16-17-18 000 95 25 23 -16.5 -21.3 28.94 21 36 129 325 010 73 58 56 -16-17-18 000 96 26 00 -16.9 -21.4 28.94 19 35 125 321 007 76 58 67 -16-17-18 000 97 26 01 -17.1 -21.4 28.95 16 32 126 322 000 78 62 67 -16-17-18 000 98 26 02 -18.7 -22.1 28.95 11 26 136 333 000 85 71 65 -17-18-19 000 99 26 03 -20.5 -23.5 28.95 11 31 127 323 002 91 62 74 -19-20-20 000 100 26 04 -22.5 -26.7 28.98 16 28 121 317 -001 82 81 88 -22-24-24 000 101 26 05 -25.0 -28.4 29.00 14 27 118 314 -002 92 97115 -24-26-26 000 102 26 06 -26.3 -28.8 29.01 13 28 106 303 -006 103100109 -25-26-26 000 103 26 07 -25.4 -28.8 29.03 17 31 101 298 -004 92108119 -26-27-26 000 104 26 08 -28.0 -31.7 29.06 19 34 96 293 -003 91102 88 -29-29-28 000 105 26 09 -29.7 -33.5 29.08 16 33 94 290 -006 91101 88 -30-28-27 000 106 26 10 -31.0 -34.7 29.09 14 32 96 293 -004 93 97 89 -30-27-25 000 107 26 11 -31.0 -34.2 29.09 13 24 102 299 000 99 94 93 -30-27-23 000 108 26 12 -32.0 -34.2 29.10 10 23 106 302 -001 113 98 87 -30-28-23 000 109 26 13 -32.0 -33.3 29.11 11 24 105 301 -006 126 94 81 -30-26-23 000 110 26 14 -32.2 -33.6 29.11 12 23 105 302 -001 124 92 82 -30-25-22 000 111 26 15 -33.0 -34.4 29.11 12 22 99 296 000 124 86 83 -30-23-22 000 112 26 16 -33.6 -35.1 29.11 11 21 100 296 -001 124 80 77 -30-23-22 000 113 26 17 -34.2 -35.7 29.12 9 20 107 304 -004 124 84 76 -31-24-22 000 114 26 18 -34.2 -35.7 29.13 10 20 115 312 -006 124 98 83 -31-26-23 000 115 26 19 -34.0 -35.6 29.13 12 20 112 308 -004 124 97 93 -30-24-23 000 116 26 20 -34.1 -35.6 29.13 11 20 109 306 -005 124 92 73 -29-23-22 000 117 26 21 -33.7 -35.2 29.13 11 20 111 307 -011 124 90 71 -29-23-22 000 118 26 22 -34.0 -35.5 29.12 9 19 112 308 -012 124 91 66 -29-23-21 000 119 26 23 -34.0 -35.6 29.12 8 18 117 313 -008 124 89 62 -29-23-21 000 120 27 00 -34.3 -35.9 29.12 7 14 119 315 -003 124 83 57 -28-23-21 000 * 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.