USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-09-19/12 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 19 12 -8.6 -13.3 28.37 24 25 136 332 000 68 68 54 -9-10-11 000 1 19 13 -8.9 -12.9 28.36 23 40 136 332 -007 74 64 51 -9 -9-10 000 2 19 14 -9.0 -13.2 28.36 27 48 134 331 -002 73 64 54 -9-10-10 000 3 19 15 -9.9 -14.3 28.36 27 46 128 325 001 72 50 50 -9 -8-10 000 4 19 16 -9.2 -13.6 28.36 26 42 127 324 -004 72 63 50 -9-10-10 000 5 19 17 -9.1 -12.6 28.36 25 40 125 321 -007 79 72 51 -9-10-11 000 6 19 18 -8.9 -12.8 28.38 25 38 122 319 -001 76 66 80 -9 -9-10 000 7 19 19 -9.1 -12.8 28.39 23 36 124 320 -004 77 67 74 -9-10-11 000 8 19 20 -9.8 -13.3 28.41 21 36 125 321 000 79 66 63 -9 -9-11 000 9 19 21 -9.6 -12.9 28.40 21 35 127 324 -001 81 66 64 -9-10-11 000 10 19 22 -9.3 -12.5 28.43 20 35 127 323 -002 81 67 63 -9 -9-10 000 11 19 23 -8.3 -11.4 28.46 21 35 126 322 -002 81 77 82 -8 -9-11 000 12 20 00 -7.6 -10.3 28.47 22 35 127 324 -005 84 87 88 -8 -9-11 007 13 20 01 -7.9 -11.3 28.49 24 37 127 324 000 79 79 64 -8 -9-10 003 14 20 02 -8.2 -11.7 28.51 25 39 126 322 000 78 79 61 -8-10-11 000 15 20 03 -8.5 -12.0 28.55 25 39 127 324 -002 78 80 68 -9-10-11 000 16 20 04 -9.0 -12.4 28.59 25 38 127 324 -002 79 81 72 -9-10-12 000 17 20 05 -9.3 -12.9 28.62 24 37 125 321 000 77 79 75 -10-11-12 000 18 20 06 -9.6 -13.3 28.65 23 37 123 319 -001 77 78 79 -10-11-12 000 19 20 07 -9.9 -13.8 28.68 24 38 119 315 -003 76 78 78 -10-12-13 000 20 20 08 -10.6 -14.5 28.71 24 37 117 313 000 77 80 86 -11-12-14 000 21 20 09 -11.2 -15.0 28.74 23 34 120 316 -002 78 82105 -12-13-14 000 22 20 10 -13.1 -15.7 28.78 22 30 111 308 -008 90102103 -14-15-17 005 23 20 11 -14.0 -16.4 28.85 21 28 107 304 -007 93107100 -15-16-17 009 24 20 12 -15.3 -17.6 28.93 18 23 105 302 -004 95101100 -16-17-17 029 25 20 13 -15.5 -17.7 29.00 16 21 112 308 -003 96101100 -16-17-18 040 26 20 14 -15.7 -17.9 29.05 15 21 114 311 -006 96100 99 -16-18-18 043 27 20 15 -15.8 -18.0 29.08 15 21 112 309 -003 96 99100 -17-18-18 032 28 20 16 -15.9 -18.0 29.09 13 19 112 308 000 96 98100 -17-17-18 024 29 20 17 -15.7 -17.8 29.10 9 16 115 311 002 97 98101 -16-16-17 021 30 20 18 -15.8 -17.5 29.11 6 18 129 326 -004 100105105 -15-15-16 019 31 20 19 -13.9 -15.8 29.12 14 25 132 328 -001 97101101 -14-15-16 011 32 20 20 -14.1 -16.4 29.11 13 27 124 321 000 94 86 95 -14-15-16 007 33 20 21 -15.1 -17.5 29.11 11 28 132 328 000 93 84 96 -14-15-17 001 34 20 22 -14.8 -17.0 29.11 14 29 122 318 000 95101102 -15-16-17 005 35 20 23 -15.7 -17.7 29.12 14 28 119 315 -001 98100107 -15-17-17 003 36 21 00 -15.7 -17.8 29.12 13 28 118 314 000 98 97105 -15-16-17 001 37 21 01 -15.4 -17.5 29.13 11 26 117 314 -004 97102103 -15-16-18 002 38 21 02 -15.3 -18.2 29.13 15 29 117 313 000 89 93101 -16-17-18 004 39 21 03 -16.0 -19.2 29.13 13 26 114 311 000 86 81103 -16-17-18 002 40 21 04 -16.1 -19.3 29.13 10 22 118 314 -001 86 78103 -16-17-18 000 41 21 05 -18.4 -20.6 29.14 9 19 132 329 -007 98 75 92 -16-17-18 000 42 21 06 -18.5 -19.9 29.14 8 20 125 322 -003 107 79 84 -16-17-18 000 43 21 07 -16.6 -19.3 29.14 10 22 125 321 -003 91 80 81 -15-17-18 000 44 21 08 -15.7 -18.7 29.14 11 24 123 319 -004 87 73 86 -15-16-17 001 45 21 09 -15.2 -18.5 29.14 13 25 125 321 -005 84 74 89 -15-16-17 000 46 21 10 -15.0 -18.4 29.13 14 26 123 320 -007 84 79 81 -15-16-18 000 47 21 11 -15.5 -19.2 29.14 15 26 124 320 -001 81 78 90 -16-17-18 000 48 21 12 -16.0 -19.7 29.15 16 27 122 318 -003 82 88 94 -16-18-19 000 49 21 13 -19.2 -22.3 29.16 20 33 120 316 -004 90106 83 -20-22-22 000 50 21 14 -23.3 -26.4 29.18 19 30 108 304 -001 93100100 -24-24-21 000 51 21 15 -22.9 -26.0 29.20 18 27 106 302 000 94 98102 -24-24-21 011 52 21 16 -22.7 -25.8 29.22 18 26 106 303 -002 94 99100 -24-25-21 010 53 21 17 -22.7 -25.7 29.24 16 23 98 295 -004 94 99 99 -24-24-22 006 54 21 18 -23.7 -26.8 29.27 14 19 83 280 -004 94 98 99 -25-24-24 004 55 21 19 -24.1 -27.1 29.28 12 16 82 278 -002 95 96100 -25-23-23 009 56 21 20 -24.9 -27.9 29.28 10 15 81 278 003 95 97101 -26-23-22 012 57 21 21 -25.6 -28.7 29.30 8 11 84 281 000 96 99101 -26-24-23 012 58 21 22 -25.6 -28.7 29.30 7 9 92 288 -001 96 99 99 -26-24-23 011 59 21 23 -25.5 -28.6 29.31 6 8 107 303 -001 96 99100 -25-24-24 005 60 22 00 -25.1 -28.1 29.31 5 9 118 315 -001 97 98100 -25-24-23 002 61 22 01 -24.8 -27.6 29.31 4 7 146 342 001 98 99100 -25-24-23 002 62 22 02 -24.8 -27.4 29.30 5 10 145 341 001 100100101 -25-24-23 003 63 22 03 -25.1 -27.7 29.29 5 9 133 330 001 100 98100 -25-24-22 003 64 22 04 -25.8 -28.2 29.29 5 10 135 331 000 103101 99 -25-24-22 003 65 22 05 -26.8 -29.0 29.28 5 10 133 330 -002 108 99 92 -25-23-21 002 66 22 06 -27.3 -28.9 29.28 7 10 132 328 000 117100 88 -25-23-21 000 67 22 07 -28.0 -29.4 29.28 5 9 105 301 004 123 95 67 -24-21-21 001 68 22 08 -30.1 -31.2 29.28 5 9 128 324 -001 130 98 64 -24-22-21 000 69 22 09 -31.6 -33.0 29.27 5 11 139 335 000 126101 57 -24-22-21 000 70 22 10 -32.4 -33.7 29.25 3 11 123 320 -001 124100 58 -24-22-21 000 71 22 11 -33.0 -34.2 29.24 2 10 143 339 000 124 94 57 -24-22-21 000 72 22 12 -34.3 -36.1 29.23 6 8 159 355 -007 124 84 49 -24-22-21 000 73 22 13 -34.6 -36.3 29.22 7 13 141 337 -006 125 71 46 -26-22-20 000 74 22 14 -35.5 -37.1 29.21 6 10 144 341 -003 128 64 46 -25-22-20 000 75 22 15 -33.9 -34.9 29.20 9 13 152 348 000 133 61 50 -26-23-21 000 76 22 16 -34.2 -35.5 29.18 9 14 148 344 003 129 54 49 -25-22-21 000 77 22 17 -33.9 -35.2 29.17 8 18 126 322 006 129 58 41 -24-22-21 000 78 22 18 -35.7 -36.8 29.16 4 13 210 47 003 133 55 41 -24-22-20 000 79 22 19 -33.1 -34.0 29.14 9 23 162 359 -001 133 49 45 -24-21-18 000 80 22 20 -32.3 -33.3 29.12 7 25 160 356 003 129 44 43 -23-21-17 000 81 22 21 -32.2 -33.2 29.11 6 13 136 333 000 130 43 47 -22-20-16 000 82 22 22 -31.4 -32.2 29.09 8 25 148 345 000 133 42 47 -22-20-16 000 83 22 23 -33.2 -34.0 29.07 5 18 118 314 -001 137 39 47 -21-20-16 000 84 23 00 -32.4 -33.1 29.06 3 20 105 301 -002 129 37 47 -20-19-16 000 85 23 01 -26.3 -30.0 29.04 12 31 102 299 -002 87 36 46 -20-18-15 000 86 23 02 -25.5 -29.2 29.03 13 32 98 295 -005 88 34 45 -19-17-15 000 87 23 03 -25.0 -29.0 29.02 15 34 103 299 -005 85 38 41 -19-19-17 000 88 23 04 -24.5 -28.4 29.00 14 34 107 304 000 85 42 39 -19-19-18 000 89 23 05 -22.8 -28.0 28.98 17 35 99 296 -010 72 46 40 -18-18-17 000 90 23 06 -23.8 -28.0 28.97 15 32 110 307 -007 81 39 43 -18-18-15 000 91 23 07 -25.4 -28.7 28.96 14 32 102 299 -016 93 33 41 -19-17-15 000 92 23 08 -24.0 -28.1 28.95 16 35 101 297 -004 83 35 38 -19-18-15 000 93 23 09 -23.9 -28.6 28.93 15 31 101 297 012 77 30 39 -19-16-15 000 94 23 10 -25.2 -29.4 28.93 14 30 103 300 005 83 31 41 -19-16-16 000 95 23 11 -25.0 -29.2 28.92 16 34 106 302 -003 83 32 41 -20-17-16 000 96 23 12 -24.6 -29.0 28.91 17 33 101 297 001 81 30 43 -20-16-15 000 97 23 13 -25.0 -29.3 28.91 16 32 109 305 -009 82 33 44 -21-18-16 000 98 23 14 -25.8 -29.9 28.90 15 30 106 302 -010 85 32 43 -21-17-16 000 99 23 15 -25.4 -30.1 28.90 17 32 110 307 -008 78 38 42 -21-19-18 000 100 23 16 -25.9 -30.1 28.90 16 32 119 315 -006 84 44 40 -21-21-19 000 101 23 17 -26.5 -30.3 28.91 15 32 122 318 -003 88 44 35 -21-21-19 000 102 23 18 -26.1 -30.0 28.91 16 33 125 321 -003 87 45 34 -21-20-19 000 103 23 19 -24.6 -29.4 28.91 18 34 122 319 -005 77 44 34 -22-20-18 000 104 23 20 -23.5 -28.5 28.91 19 38 119 316 001 75 41 35 -21-19-18 000 105 23 21 -22.2 -27.5 28.91 21 37 123 319 -004 71 39 34 -20-18-18 000 106 23 22 -22.7 -27.8 28.91 19 34 117 313 -007 74 34 36 -20-17-16 000 107 23 23 -22.7 -27.7 28.91 18 35 120 316 -005 74 34 40 -20-17-17 000 108 24 00 -22.5 -27.4 28.91 16 36 123 320 -004 74 38 38 -20-18-17 000 109 24 01 -21.8 -26.8 28.90 16 36 115 312 002 73 40 36 -19-18-16 000 110 24 02 -20.7 -26.1 28.89 19 37 119 315 000 70 39 37 -18-17-16 000 111 24 03 -21.0 -26.0 28.89 17 38 122 318 000 73 38 39 -18-17-16 000 112 24 04 -19.9 -25.2 28.88 19 40 122 319 000 70 43 39 -16-17-16 000 113 24 05 -18.8 -24.3 28.88 19 41 121 318 001 69 43 40 -16-16-16 000 114 24 06 -19.3 -24.3 28.88 17 40 123 319 000 72 42 38 -16-16-16 000 115 24 07 -19.0 -24.1 28.88 17 42 121 317 003 72 44 38 -16-16-16 000 116 24 08 -17.5 -23.0 28.87 21 45 117 314 000 68 43 37 -15-15-16 000 117 24 09 -16.3 -22.0 28.87 24 49 116 313 -003 65 44 37 -14-14-15 000 118 24 10 -15.4 -21.3 28.87 25 49 119 315 -002 64 45 37 -14-14-15 000 119 24 11 -15.0 -21.0 28.88 27 50 120 317 000 63 45 36 -13-14-15 000 120 24 12 -14.4 -20.6 28.89 29 52 120 316 -004 61 45 36 -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.