USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-04-30/00 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 30 00 -32.2 -37.2 28.91 17 21 119 315 -001 83 84 90 -30-29-30 000 1 30 01 -33.7 -36.9 28.95 17 30 117 313 -001 100 87 93 -30-29-30 000 2 30 02 -34.2 -37.0 28.96 18 31 114 310 -002 107 90 97 -30-29-29 000 3 30 03 -35.0 -37.1 28.99 18 30 115 311 -002 117 94105 -30-29-30 000 4 30 04 -35.5 -37.6 29.03 18 30 117 313 -001 118 99111 -31-29-29 000 5 30 05 -35.3 -37.6 29.06 19 29 114 310 000 114 96113 -31-28-29 000 6 30 06 -35.1 -37.5 29.09 19 28 110 307 000 113 93116 -32-28-29 000 7 30 07 -35.1 -37.6 29.11 19 26 113 309 002 112 92116 -32-28-29 000 8 30 08 -35.3 -38.0 29.14 18 25 114 310 -003 110 97110 -33-29-30 000 9 30 09 -35.3 -38.3 29.19 17 24 112 309 -002 106 96104 -32-28-29 001 10 30 10 -35.3 -38.6 29.21 16 22 113 309 -003 102 96101 -32-28-30 002 11 30 11 -35.5 -38.9 29.24 14 21 119 315 000 101102 98 -32-29-30 003 12 30 12 -36.3 -39.7 29.27 14 19 124 321 000 100102 97 -32-29-30 002 13 30 13 -36.8 -40.3 29.30 13 18 122 319 -008 100102 96 -32-29-30 001 14 30 14 -36.8 -40.5 29.33 12 17 121 318 -002 98103 90 -32-29-30 000 15 30 15 -36.6 -40.3 29.34 11 15 121 317 001 97104 93 -32-30-30 001 16 30 16 -37.6 -41.2 29.35 10 14 119 316 002 98103 96 -32-30-29 002 17 30 17 -39.9 -42.8 29.36 10 13 126 322 002 109 98 96 -32-30-29 001 18 30 18 -42.1 -44.3 29.37 9 14 123 319 -001 124 98 92 -32-30-29 000 19 30 19 -43.5 -45.8 29.39 7 13 127 323 -004 124 95 90 -33-29-29 000 20 30 20 -44.5 -46.9 29.41 7 13 134 330 000 124 98 86 -34-29-29 000 21 30 21 -45.3 -47.7 29.41 7 13 131 328 003 124 99 84 -34-29-29 000 22 30 22 -46.1 -48.5 29.41 7 14 124 320 000 124 98 82 -35-30-29 000 23 30 23 -46.6 -49.2 29.42 6 14 128 324 001 124 94 81 -35-30-28 000 24 01 00 -47.0 -49.5 29.42 7 15 130 326 000 124 97 77 -36-30-28 000 25 01 01 -47.5 -50.1 29.42 6 15 123 320 000 124 93 72 -36-30-28 000 26 01 02 -47.6 -50.1 29.43 7 15 126 322 001 124 89 70 -35-29-28 000 27 01 03 -47.5 -50.0 29.43 8 16 126 322 000 124 87 66 -35-28-28 000 28 01 04 -47.5 -49.9 29.43 9 19 125 321 001 124 85 65 -35-28-28 000 29 01 05 -47.0 -49.5 29.43 9 20 127 323 001 124 86 64 -35-28-28 000 30 01 06 -46.5 -48.9 29.44 9 21 129 326 001 126 87 63 -36-28-28 000 31 01 07 -46.7 -49.0 29.43 8 19 132 329 002 127 83 66 -37-28-29 000 32 01 08 -47.3 -49.7 29.42 8 20 135 332 002 126 85 70 -35-29-28 000 33 01 09 -47.3 -49.6 29.41 8 19 128 324 002 127 82 76 -34-29-28 000 34 01 10 -47.8 -50.2 29.40 7 18 133 329 002 126 82 79 -34-29-28 000 35 01 11 -47.7 -50.1 29.40 8 23 134 330 001 127 80 76 -36-29-29 000 36 01 12 -47.3 -49.5 29.40 8 19 136 332 003 129 78 75 -35-29-28 000 37 01 13 -47.0 -49.1 29.39 9 18 137 334 002 129 79 70 -35-30-29 000 38 01 14 -47.3 -49.5 29.37 8 18 144 340 002 128 82 61 -36-30-29 000 39 01 15 -47.7 -50.1 29.35 7 19 138 335 002 128 78 49 -35-30-28 000 40 01 16 -48.5 -51.0 29.32 5 20 160 356 003 126 78 51 -33-31-29 000 41 01 17 -48.4 -50.9 29.29 5 21 166 3 004 123 63 52 -33-28-28 000 42 01 18 -48.5 -50.7 29.26 4 21 195 32 003 125 56 41 -31-29-26 000 43 01 19 -45.6 -47.1 29.23 5 23 175 11 001 133 51 48 -29-29-25 000 44 01 20 -44.5 -45.6 29.20 5 22 175 11 -001 136 41 44 -29-27-24 000 45 01 21 -43.7 -45.2 29.17 8 21 159 355 002 134 47 46 -29-27-24 000 46 01 22 -43.4 -44.7 29.15 5 20 159 355 001 134 52 44 -26-26-24 000 47 01 23 -45.5 -47.2 29.12 4 19 213 49 000 135 39 37 -23-23-23 000 48 02 00 -43.3 -45.2 29.09 7 22 174 11 001 127 37 35 -22-21-21 000 49 02 01 -40.2 -41.2 29.06 10 40 149 345 002 134 29 31 -20-18-20 000 50 02 02 -35.0 -35.3 29.04 11 33 151 347 002 138 33 39 -19-19-19 000 51 02 03 -31.7 -32.6 29.01 13 38 146 342 000 126 34 38 -19-18-19 000 52 02 04 -28.5 -30.7 28.99 16 40 138 334 000 106 32 41 -19-18-18 000 53 02 05 -26.3 -29.6 28.96 18 40 138 334 003 93 30 42 -19-17-18 000 54 02 06 -25.6 -29.1 28.94 17 39 139 335 000 90 28 46 -19-16-17 000 55 02 07 -24.2 -28.7 28.91 19 49 139 335 -001 79 34 56 -17-17-18 000 56 02 08 -20.2 -26.7 28.89 24 54 135 332 000 62 42 66 -17-17-18 000 57 02 09 -17.9 -24.5 28.88 29 53 135 331 -003 60 51 81 -16-17-18 000 58 02 10 -16.8 -22.6 28.86 30 53 136 333 -003 66 62 77 -16-16-18 000 59 02 11 -15.8 -20.9 28.84 32 52 138 334 -001 70 68 71 -15-16-18 000 60 02 12 -15.5 -20.0 28.85 31 49 136 332 -002 75 74 74 -15-16-17 000 61 02 13 -15.5 -19.1 28.85 30 47 137 333 -006 82 85 91 -15-16-17 000 62 02 14 -14.9 -17.6 28.86 31 46 136 332 000 90 95 98 -15-16-18 018 63 02 15 -14.9 -18.7 28.89 29 44 132 328 001 81 83 95 -15-16-17 015 64 02 16 -15.5 -19.6 28.91 27 42 132 328 -003 78 73 82 -15-16-17 001 65 02 17 -15.6 -19.9 28.92 29 45 133 329 000 77 71 62 -16-17-18 000 66 02 18 -16.1 -20.6 28.94 30 45 131 328 -004 75 71 56 -16-17-18 000 67 02 19 -17.3 -21.6 28.97 27 44 134 330 000 78 69 54 -16-17-18 000 68 02 20 -17.8 -22.0 28.99 25 43 135 331 -001 79 69 52 -17-17-18 000 69 02 21 -17.8 -21.9 29.00 26 44 136 332 000 80 69 52 -17-17-18 000 70 02 22 -17.6 -21.8 29.01 28 46 135 331 -001 79 70 51 -17-17-18 000 71 02 23 -17.6 -21.8 29.03 28 46 135 331 001 78 70 50 -17-17-18 000 72 03 00 -17.4 -21.8 29.05 30 48 135 331 001 77 68 48 -17-17-18 000 73 03 01 -17.1 -21.6 29.05 31 48 134 330 000 76 66 45 -16-17-18 000 74 03 02 -16.7 -21.3 29.05 30 48 132 328 000 75 63 47 -16-16-17 000 75 03 03 -16.6 -21.1 29.05 30 48 132 328 003 75 60 50 -15-15-16 000 76 03 04 -16.5 -21.0 29.05 30 49 132 328 005 76 62 50 -15-15-16 000 77 03 05 -15.9 -20.5 29.05 31 49 130 326 008 74 60 52 -15-15-15 000 78 03 06 -15.1 -19.7 29.06 31 49 130 326 000 74 60 53 -14-14-15 000 79 03 07 -14.8 -19.4 29.05 31 49 131 327 003 74 57 52 -14-14-14 000 80 03 08 -14.6 -19.2 29.05 30 49 130 327 001 73 56 53 -14-13-14 000 * 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.