USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-05-03/00 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 03 00 -10.5 -15.5 29.00 29 32 131 328 000 67 71 60 -11-12-13 000 1 03 01 -11.0 -14.7 29.01 26 46 135 331 007 78 74 66 -10-11-12 000 2 03 02 -12.1 -15.7 29.04 32 49 136 333 -001 80 86 72 -12-12-12 000 3 03 03 -11.9 -16.1 29.03 33 51 135 331 000 74 68 72 -11-11-12 000 4 03 04 -11.4 -15.1 29.03 30 47 134 330 000 79 77 75 -11-11-12 000 5 03 05 -11.0 -14.5 29.04 27 43 133 329 -001 80 82 71 -10-11-12 000 6 03 06 -10.8 -14.6 29.04 27 42 131 327 -001 77 74 66 -11-11-12 000 7 03 07 -11.1 -14.7 29.03 25 40 132 328 003 80 75 63 -11-12-13 000 8 03 08 -11.0 -14.6 29.01 26 42 130 327 002 79 75 61 -11-12-13 000 9 03 09 -11.8 -15.3 29.00 25 42 129 326 000 81 74 59 -11-12-13 000 10 03 10 -12.9 -16.6 29.03 24 43 132 328 -002 80 68 57 -12-12-13 000 11 03 11 -12.9 -16.7 29.02 27 45 133 329 000 79 71 57 -12-13-13 000 12 03 12 -12.5 -16.5 29.00 29 47 134 331 001 77 69 61 -12-12-12 000 13 03 13 -11.8 -16.6 28.99 33 53 136 333 003 70 66 66 -11-11-12 000 14 03 14 -11.3 -16.0 28.98 34 53 136 333 006 71 69 73 -11-11-12 000 15 03 15 -10.8 -15.6 28.98 33 53 137 333 003 69 65 79 -10-11-12 000 16 03 16 -10.3 -15.0 28.97 34 52 137 333 -003 70 69 85 -10-11-12 000 17 03 17 -10.1 -14.3 28.96 35 52 135 331 001 74 76 92 -10-11-12 000 18 03 18 -10.4 -13.9 28.94 34 51 135 331 006 79 85 97 -11-11-12 001 19 03 19 -10.4 -13.3 28.94 33 50 136 332 006 84 89 91 -11-11-12 007 20 03 20 -10.8 -14.6 28.94 32 50 136 332 006 77 78 64 -10-11-12 001 21 03 21 -11.1 -15.2 28.96 31 51 134 331 006 76 72 67 -11-11-12 000 22 03 22 -11.0 -15.3 28.96 32 51 137 333 007 73 68 73 -10-11-12 000 23 03 23 -11.2 -15.7 28.96 30 48 140 336 -002 72 68 82 -11-12-13 000 24 04 00 -11.9 -16.1 28.96 29 44 140 336 000 75 74 83 -11-13-14 000 25 04 01 -13.1 -16.9 28.99 27 43 130 326 007 79 76 69 -12-14-15 000 26 04 02 -14.6 -18.4 29.02 26 43 124 320 005 79 83 71 -15-16-17 000 27 04 03 -15.8 -19.5 29.05 23 39 124 320 003 82 89 80 -16-17-18 000 28 04 04 -17.1 -20.2 29.08 27 40 117 314 001 88106 74 -18-19-20 000 29 04 05 -18.9 -21.7 29.13 23 36 114 310 -002 93 98 76 -19-20-19 000 30 04 06 -18.0 -20.7 29.17 20 32 106 303 -002 93102107 -19-19-20 006 31 04 07 -19.5 -22.2 29.22 18 28 95 292 -004 94 99101 -20-21-21 023 32 04 08 -20.2 -22.9 29.26 17 27 97 293 -001 95 99101 -21-21-21 030 33 04 09 -20.4 -23.2 29.30 17 25 100 296 001 94100100 -21-22-18 019 34 04 10 -19.8 -22.5 29.33 16 25 103 300 000 94 98 96 -20-20-17 007 35 04 11 -18.6 -21.2 29.37 13 22 104 300 -003 95 96 98 -19-17-16 006 36 04 12 -18.3 -20.5 29.39 9 17 115 311 -001 99 93 98 -19-17-15 005 37 04 13 -19.0 -21.1 29.39 6 12 107 304 -001 100 94 98 -16-16-15 001 38 04 14 -18.7 -20.5 29.39 4 17 156 352 000 104 98 97 -15-16-15 003 39 04 15 -18.8 -19.4 29.38 7 19 139 336 000 118 73100 -13-14-15 001 40 04 16 -20.0 -20.5 29.37 7 19 145 341 001 119 60 68 -12-13-14 000 41 04 17 -19.9 -21.2 29.36 9 32 139 335 000 109 64 71 -12-13-15 000 42 04 18 -18.1 -20.5 29.35 13 33 135 331 -001 94 69 74 -13-14-15 000 43 04 19 -17.1 -20.2 29.34 15 34 131 327 001 87 70 75 -13-14-16 000 44 04 20 -17.0 -19.9 29.33 17 34 130 327 000 89 73 71 -14-15-16 000 45 04 21 -16.9 -20.1 29.32 17 33 131 327 000 87 77 71 -15-16-17 000 46 04 22 -16.7 -20.2 29.32 17 32 131 327 -001 85 78 74 -15-16-17 000 47 04 23 -16.6 -20.1 29.33 17 31 130 327 -002 85 79 74 -15-16-17 000 48 05 00 -16.7 -20.3 29.31 17 32 127 324 000 84 76 75 -15-16-17 000 49 05 01 -17.3 -20.6 29.29 16 33 129 326 -004 86 71 76 -14-16-16 000 50 05 02 -17.5 -20.9 29.27 16 34 128 324 -001 85 70 60 -14-16-16 000 51 05 03 -18.4 -21.5 29.24 14 34 126 323 000 88 64 64 -13-14-15 000 52 05 04 -19.4 -22.6 29.22 12 33 133 329 -001 88 58 65 -12-12-14 000 53 05 05 -19.1 -22.2 29.19 12 34 139 336 000 88 52 67 -12-11-13 000 54 05 06 -17.7 -21.1 29.16 13 37 143 339 000 85 53 69 -12-11-12 000 55 05 07 -15.8 -19.6 29.12 16 38 140 337 -002 80 61 74 -12-11-12 000 56 05 08 -12.7 -14.9 29.09 20 41 141 337 000 92 92 90 -11-11-13 000 57 05 09 -11.2 -12.8 29.06 23 39 140 337 -001 97100 96 -11-11-12 001 58 05 10 -10.9 -12.3 29.04 24 38 141 337 -003 98102101 -11-11-12 002 59 05 11 -10.7 -11.8 29.03 23 37 142 339 -003 101101 82 -10-11-12 002 60 05 12 -10.7 -12.5 29.01 22 36 136 333 -005 94 87 75 -10-11-12 000 61 05 13 -11.8 -14.4 29.00 20 35 133 329 -001 88 84 74 -11-12-13 000 62 05 14 -12.1 -15.2 29.00 21 36 127 324 -001 84 83 68 -12-13-13 000 63 05 15 -13.1 -16.2 29.00 22 37 126 323 000 85 82 62 -12-13-13 000 64 05 16 -13.4 -16.6 28.99 24 39 128 324 -003 84 79 63 -12-13-12 000 65 05 17 -13.4 -16.3 28.99 23 39 126 322 -001 86 77 62 -12-13-12 000 66 05 18 -13.8 -16.8 28.99 22 39 129 325 000 86 76 63 -13-13-12 000 67 05 19 -13.7 -16.8 28.98 23 40 128 325 000 85 76 60 -13-13-12 000 68 05 20 -13.0 -16.1 28.97 24 41 129 325 001 85 74 58 -12-12-12 000 69 05 21 -11.3 -14.7 28.97 26 43 128 325 002 81 73 57 -11-11-12 000 70 05 22 -10.4 -13.9 28.96 28 45 131 327 000 80 76 60 -10-11-12 000 71 05 23 -9.9 -13.6 28.97 29 45 129 325 -003 77 75 63 -10-11-12 000 72 06 00 -9.8 -13.4 28.96 28 44 129 325 000 78 75 66 -10-11-12 000 73 06 01 -10.1 -13.6 28.95 28 44 129 326 003 79 77 66 -10-11-12 000 74 06 02 -10.9 -14.7 28.94 28 45 129 326 000 78 72 70 -11-12-13 000 75 06 03 -11.9 -16.0 28.92 27 46 129 325 002 76 66 58 -11-12-13 000 76 06 04 -12.2 -16.1 28.91 28 47 123 319 012 77 72 55 -12-13-14 000 77 06 05 -12.8 -17.0 28.90 27 46 125 321 -003 76 65 52 -12-13-14 000 78 06 06 -13.5 -17.5 28.89 26 45 125 321 -007 77 65 54 -13-13-13 000 79 06 07 -13.5 -17.6 28.88 26 45 127 324 -009 77 64 54 -12-12-13 000 80 06 08 -13.2 -16.9 28.88 24 44 130 326 -005 80 65 55 -12-12-13 000 81 06 09 -12.0 -15.5 28.87 24 41 130 327 -004 80 70 55 -11-12-12 000 82 06 10 -11.3 -14.7 28.86 26 44 129 326 002 81 74 54 -11-11-12 000 83 06 11 -11.4 -14.4 28.86 26 43 130 326 004 84 80 61 -11-12-12 000 84 06 12 -11.6 -14.4 28.85 26 45 130 327 -004 86 78 60 -11-12-12 000 85 06 13 -11.9 -15.4 28.84 26 43 126 323 -002 80 72 60 -11-12-12 000 86 06 14 -12.6 -16.2 28.83 27 42 126 323 -007 80 70 57 -12-12-12 000 87 06 15 -13.1 -16.8 28.82 27 43 129 325 -009 80 69 56 -12-12-12 000 88 06 16 -12.9 -15.9 28.81 28 44 130 326 -006 86 73 78 -12-13-12 000 89 06 17 -12.5 -15.3 28.80 27 41 130 327 -003 87 79 93 -13-13-13 000 90 06 18 -12.3 -15.2 28.80 27 40 132 328 000 86 86 93 -13-13-13 000 91 06 19 -12.5 -15.5 28.79 27 39 132 329 000 86 87 96 -13-14-13 000 92 06 20 -12.6 -15.8 28.78 26 40 133 329 003 84 85 92 -13-14-14 000 93 06 21 -12.9 -16.1 28.77 25 41 133 329 004 84 86 88 -13-14-14 000 94 06 22 -12.7 -16.0 28.76 27 43 130 327 -002 83 83 83 -13-13-14 000 95 06 23 -12.4 -15.8 28.75 27 42 132 328 -001 82 80 71 -13-13-14 000 96 07 00 -12.6 -16.0 28.74 26 41 132 328 001 82 77 74 -13-13-13 000 97 07 01 -12.9 -16.3 28.74 25 41 136 332 001 82 74 66 -13-13-13 000 98 07 02 -13.0 -16.2 28.73 24 41 134 330 000 84 80 83 -13-13-13 000 99 07 03 -12.4 -16.0 28.72 25 42 133 329 -003 80 74 75 -12-13-14 000 100 07 04 -12.4 -16.3 28.71 26 44 129 325 000 77 72 61 -12-13-14 000 101 07 05 -12.4 -16.5 28.71 26 44 128 324 000 76 70 58 -12-13-14 000 102 07 06 -13.0 -17.1 28.70 26 44 128 325 003 76 67 53 -13-14-15 000 103 07 07 -13.2 -17.4 28.69 26 45 127 323 002 76 67 51 -13-14-15 000 104 07 08 -13.3 -17.7 28.69 27 45 126 323 002 74 65 50 -13-14-15 000 105 07 09 -13.9 -18.5 28.69 27 46 127 323 003 73 62 49 -14-14-15 000 106 07 10 -14.4 -18.9 28.69 26 46 127 323 003 74 63 50 -14-14-15 000 107 07 11 -14.7 -19.2 28.69 26 45 126 322 001 74 63 49 -14-15-15 000 108 07 12 -14.9 -19.4 28.69 26 44 127 324 000 74 61 50 -14-15-15 000 109 07 13 -14.9 -19.5 28.69 28 46 127 323 -002 73 60 50 -14-15-15 000 110 07 14 -15.3 -19.8 28.70 26 44 127 323 -003 75 63 52 -15-15-16 000 111 07 15 -15.8 -20.2 28.71 25 43 127 323 001 76 64 53 -15-16-16 000 112 07 16 -16.2 -20.6 28.73 24 42 126 322 000 76 63 53 -15-16-16 000 113 07 17 -16.5 -21.0 28.74 24 41 126 322 000 75 60 53 -16-16-16 000 114 07 18 -16.7 -21.2 28.75 23 41 125 321 002 75 58 51 -16-16-16 000 115 07 19 -16.8 -21.3 28.75 22 41 124 320 000 75 59 49 -15-16-16 000 116 07 20 -17.1 -21.6 28.76 21 40 121 318 -001 76 59 51 -15-16-17 000 117 07 21 -17.3 -21.8 28.77 21 38 121 318 -001 75 59 52 -16-17-17 000 118 07 22 -17.3 -21.9 28.77 21 38 122 318 004 75 58 51 -15-16-17 000 119 07 23 -17.6 -22.1 28.79 20 37 121 317 000 76 60 53 -15-16-17 000 120 08 00 -17.9 -22.5 28.80 19 36 121 318 000 76 62 56 -15-17-17 000 * 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.