USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-09-19/00 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 19 00 -12.6 -18.8 28.50 18 22 145 342 000 56 41 67 -11-10-10 000 1 19 01 -14.1 -18.9 28.49 17 35 149 345 -001 71 44 78 -11-10-10 000 2 19 02 -14.8 -20.2 28.48 27 45 146 342 -003 68 50 96 -15-12-11 000 3 19 03 -13.1 -18.4 28.47 31 48 142 339 -001 67 71102 -13-11-11 000 4 19 04 -12.4 -16.3 28.44 27 49 140 337 000 77 72 99 -12-10-11 001 5 19 05 -11.3 -15.5 28.43 28 48 137 333 000 74 69 92 -11-10-11 000 6 19 06 -10.6 -15.2 28.41 30 48 134 331 002 72 62 84 -10-10-11 000 7 19 07 -10.7 -14.8 28.40 30 48 133 330 000 75 65 81 -10-10-12 000 8 19 08 -10.4 -14.3 28.38 29 46 134 330 000 76 70 78 -10-11-12 000 9 19 09 -10.2 -14.1 28.36 30 45 134 331 000 76 72 79 -10-11-12 000 10 19 10 -10.2 -14.3 28.37 30 45 132 329 -003 74 72 57 -10-12-13 000 11 19 11 -10.5 -14.5 28.37 28 44 130 326 -004 76 70 51 -11-12-13 000 12 19 12 -10.3 -14.5 28.35 28 43 128 325 -002 74 69 47 -11-12-13 000 13 19 13 -10.2 -14.5 28.35 28 44 128 324 -007 73 66 40 -10-12-12 000 14 19 14 -10.4 -14.6 28.34 27 44 129 325 -003 74 63 38 -10-11-12 000 15 19 15 -10.2 -14.5 28.33 29 45 128 324 -003 73 62 33 -10-11-11 000 16 19 16 -10.3 -14.7 28.34 28 44 126 323 000 73 60 51 -10-11-11 000 17 19 17 -10.4 -14.5 28.35 27 42 124 321 001 75 66 88 -11-11-11 000 18 19 18 -10.0 -13.5 28.35 29 43 127 324 -002 79 75 91 -10-11-11 000 19 19 19 -10.3 -13.9 28.36 28 44 128 324 -003 78 71 66 -10-11-12 000 20 19 20 -10.5 -14.4 28.39 27 44 125 321 -002 76 68 63 -10-11-12 000 21 19 21 -10.3 -14.2 28.42 27 42 119 315 -005 76 72 78 -10-11-13 000 22 19 22 -10.2 -14.0 28.44 26 41 117 314 -003 77 73 91 -10-11-12 000 23 19 23 -9.8 -13.4 28.48 24 38 116 312 -005 78 76 74 -10-11-13 000 24 20 00 -9.4 -12.7 28.52 23 37 121 317 -002 80 85 87 -10-11-13 000 25 20 01 -9.1 -11.7 28.54 22 36 122 318 -005 86 92 97 -9-11-12 016 26 20 02 -9.3 -11.6 28.58 25 37 120 316 -005 89 97 99 -10-11-12 032 27 20 03 -9.7 -12.9 28.61 23 36 120 317 -006 81 86 98 -10-11-13 037 28 20 04 -10.3 -14.0 28.62 23 36 121 318 -005 78 81 89 -11-12-13 001 29 20 05 -11.0 -13.6 28.66 23 35 118 315 -008 87 95101 -12-13-14 026 30 20 06 -11.2 -14.9 28.71 21 32 121 318 -008 78 83 90 -12-13-14 025 31 20 07 -11.6 -15.2 28.75 22 31 124 320 -003 80 85 90 -12-14-15 002 32 20 08 -12.1 -14.9 28.78 21 31 121 317 -005 86 94100 -13-14-15 009 33 20 09 -12.3 -14.7 28.80 21 31 119 315 -010 90 96101 -13-14-16 032 34 20 10 -12.5 -15.0 28.83 21 31 119 315 -005 91 98 99 -13-15-16 036 35 20 11 -13.1 -15.4 28.87 20 29 116 313 -004 92 99100 -14-15-16 034 36 20 12 -13.5 -15.7 28.92 18 27 116 313 -004 94101100 -14-15-17 036 37 20 13 -13.8 -15.9 28.96 17 24 116 312 -004 95101101 -14-16-17 034 38 20 14 -14.1 -16.1 29.00 15 21 113 309 -005 96102102 -15-16-17 027 39 20 15 -14.4 -16.4 29.03 13 19 113 309 -004 96101101 -15-16-17 030 40 20 16 -14.3 -16.3 29.06 12 20 118 314 -002 96103101 -15-16-17 028 41 20 17 -14.5 -16.5 29.08 12 22 123 319 -001 97101101 -15-16-17 014 42 20 18 -15.7 -16.9 29.09 10 23 125 322 000 106101102 -15-16-17 004 43 20 19 -16.9 -17.4 29.10 9 22 129 326 -002 116102102 -14-16-17 001 44 20 20 -17.5 -17.9 29.11 10 24 133 330 001 117101101 -15-16-17 000 45 20 21 -18.0 -18.6 29.13 15 26 123 319 -001 116107 96 -17-17-18 000 46 20 22 -18.9 -19.8 29.14 12 25 118 314 -006 114 99 99 -18-17-16 000 47 20 23 -18.3 -20.3 29.16 12 25 128 324 -004 100 76101 -17-17-16 000 48 21 00 -17.2 -19.1 29.16 10 21 125 321 000 100 67 97 -15-16-16 000 49 21 01 -17.5 -19.3 29.14 8 20 132 328 000 102 66 82 -14-16-16 000 50 21 02 -15.9 -18.6 29.12 8 22 136 332 -001 90 68 88 -14-14-16 000 51 21 03 -15.3 -18.8 29.11 12 23 128 325 -002 83 74 92 -15-16-16 000 52 21 04 -15.9 -19.1 29.12 11 22 126 322 -002 86 68 91 -15-16-17 000 53 21 05 -16.4 -19.2 29.12 11 23 126 322 -005 90 71 84 -16-17-18 000 54 21 06 -17.3 -20.9 29.12 16 31 114 310 -001 84 84 99 -18-19-20 000 55 21 07 -19.2 -22.2 29.14 17 31 105 301 -002 91 92 96 -20-20-18 001 56 21 08 -18.8 -21.4 29.15 13 27 106 302 001 94 95100 -19-19-18 011 57 21 09 -17.6 -20.3 29.15 12 29 105 301 000 93 86 92 -18-18-18 012 58 21 10 -17.2 -20.4 29.16 9 23 111 308 001 87 83 93 -18-18-18 001 59 21 11 -17.4 -20.1 29.17 8 23 111 307 -001 91 92 98 -18-18-18 004 60 21 12 -17.5 -19.9 29.17 9 27 111 307 -004 96100 99 -18-19-18 012 61 21 13 -19.1 -22.0 29.17 17 35 114 311 -005 92 96 97 -20-20-19 009 62 21 14 -21.3 -24.3 29.19 16 25 103 300 -002 93 96 96 -22-23-20 005 63 21 15 -21.9 -24.9 29.21 16 26 101 298 000 94 98 97 -23-23-22 006 64 21 16 -23.5 -26.5 29.23 15 22 92 288 -003 95 97 98 -24-24-23 005 65 21 17 -24.4 -27.6 29.24 13 21 86 283 -007 94 96 97 -25-23-22 005 66 21 18 -24.9 -28.0 29.26 11 16 83 279 -001 95 98100 -26-24-23 006 67 21 19 -25.3 -28.5 29.29 9 12 82 279 -002 94 99100 -26-25-24 006 68 21 20 -25.5 -28.8 29.30 10 13 82 278 -001 94 96 98 -27-25-23 004 69 21 21 -26.1 -29.4 29.31 10 13 80 276 -001 94 96 99 -27-25-23 004 70 21 22 -27.0 -30.3 29.31 9 12 75 272 -002 94 97100 -28-25-22 004 71 21 23 -27.0 -30.4 29.32 6 10 72 269 002 94 99104 -28-25-22 005 72 22 00 -26.6 -29.8 29.33 5 9 104 301 -001 95 98101 -27-25-23 004 73 22 01 -26.0 -29.2 29.33 5 7 104 301 000 96 98 99 -27-24-23 003 74 22 02 -25.9 -29.0 29.34 4 6 109 305 000 96 99 98 -26-24-23 004 75 22 03 -25.7 -28.8 29.33 3 5 106 303 -003 96 98 98 -25-24-22 004 76 22 04 -25.5 -28.5 29.33 4 5 127 323 000 97100 97 -25-24-22 005 77 22 05 -26.0 -28.8 29.33 3 5 128 324 000 99101 92 -24-25-23 003 78 22 06 -26.0 -28.7 29.33 3 7 148 344 002 102 99 98 -24-24-22 002 79 22 07 -26.2 -28.8 29.33 5 9 168 4 -001 102101100 -25-24-22 004 80 22 08 -26.7 -28.8 29.32 7 13 133 329 -003 109 99 97 -24-23-22 003 81 22 09 -26.7 -29.2 29.31 6 11 116 313 000 104 99 98 -25-23-21 003 82 22 10 -27.2 -29.7 29.31 4 11 148 344 000 104 99 96 -25-23-21 004 83 22 11 -25.7 -28.7 29.29 7 17 152 349 001 98100 85 -26-23-21 002 84 22 12 -26.7 -29.1 29.28 7 11 154 351 000 106 97 79 -25-23-21 001 85 22 13 -27.5 -29.4 29.28 6 14 155 351 003 112 88 48 -24-23-21 000 86 22 14 -28.7 -30.3 29.27 8 18 159 356 003 118 76 53 -25-24-22 000 87 22 15 -27.5 -30.4 29.26 10 21 163 359 005 99 69 61 -26-24-22 000 88 22 16 -26.2 -29.9 29.23 10 29 113 309 002 88 57 61 -24-22-21 000 89 22 17 -26.1 -30.1 29.22 13 28 110 306 002 85 62 54 -24-22-21 000 90 22 18 -26.9 -30.7 29.21 12 25 111 307 004 88 62 46 -25-22-20 000 91 22 19 -27.3 -31.1 29.20 10 25 121 318 006 89 62 46 -24-23-20 000 92 22 20 -28.4 -31.4 29.19 8 28 122 319 001 98 59 43 -23-23-20 000 93 22 21 -26.3 -30.5 29.17 14 32 113 310 000 83 51 41 -22-22-19 000 94 22 22 -24.1 -29.1 29.15 16 35 118 314 000 75 46 39 -21-21-19 000 95 22 23 -22.8 -28.2 29.14 18 35 116 312 002 71 49 38 -19-20-20 000 96 23 00 -21.7 -27.5 29.12 18 39 106 303 000 67 44 40 -18-19-20 000 97 23 01 -20.9 -26.7 29.11 17 37 113 309 -005 66 46 43 -17-19-20 000 98 23 02 -20.6 -26.6 29.09 19 37 112 309 -005 66 41 48 -18-19-18 000 99 23 03 -20.8 -26.6 29.07 18 37 113 309 -007 67 37 46 -18-18-17 000 100 23 04 -20.2 -26.3 29.06 21 39 113 310 -003 64 35 46 -17-18-17 000 101 23 05 -20.2 -26.2 29.05 19 37 119 315 -005 64 41 48 -17-18-19 000 102 23 06 -19.9 -26.2 29.04 20 37 116 312 -001 62 37 51 -17-18-18 000 103 23 07 -20.2 -26.5 29.03 20 38 116 312 001 63 36 49 -17-18-18 000 104 23 08 -20.3 -26.5 29.01 19 38 116 312 001 63 43 48 -17-18-19 000 105 23 09 -20.2 -26.5 28.99 19 40 108 304 003 62 37 48 -16-17-17 000 106 23 10 -23.2 -27.7 28.98 12 34 125 321 000 78 41 48 -16-17-17 000 107 23 11 -24.5 -28.5 28.98 12 36 118 315 -003 83 39 47 -16-17-17 000 108 23 12 -25.0 -28.6 28.97 10 31 129 325 -006 86 39 48 -16-16-16 000 109 23 13 -23.1 -28.0 28.96 15 34 118 315 -003 75 36 43 -15-15-16 000 110 23 14 -25.6 -28.8 28.96 10 29 157 353 002 91 39 42 -16-16-17 000 111 23 15 -25.5 -28.9 28.94 9 34 141 337 -002 88 41 41 -15-16-18 000 112 23 16 -26.7 -29.3 28.94 9 35 133 330 -008 98 41 41 -16-17-18 000 113 23 17 -21.3 -27.0 28.94 17 36 114 311 -008 67 44 38 -16-18-18 000 114 23 18 -20.8 -26.7 28.94 18 37 112 308 -014 66 42 38 -16-17-18 000 115 23 19 -20.6 -26.7 28.94 18 36 112 308 -015 64 40 37 -17-18-18 000 116 23 20 -20.4 -26.4 28.94 20 36 120 317 -014 65 42 37 -18-19-18 000 117 23 21 -21.1 -26.6 28.95 16 34 123 320 -008 68 41 38 -18-19-18 000 118 23 22 -21.1 -26.6 28.97 17 34 130 327 -002 69 42 38 -18-18-18 000 119 23 23 -22.7 -27.3 28.97 10 35 132 329 -005 75 43 38 -16-18-18 000 120 24 00 -21.1 -26.4 28.97 13 36 131 327 -003 69 42 39 -16-17-18 000 * 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.