USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-05-02/12 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 02 12 -12.5 -19.2 28.81 33 40 140 336 000 57 60 62 -12-13-13 000 1 02 13 -13.5 -19.1 28.82 34 58 141 337 -001 65 59 62 -13-13-13 000 2 02 14 -14.8 -20.1 28.84 38 61 143 340 000 68 57 65 -15-14-14 000 3 02 15 -13.4 -19.1 28.83 39 62 136 333 001 64 57 63 -13-13-14 000 4 02 16 -12.9 -18.6 28.85 40 61 132 328 004 64 61 58 -13-13-14 000 5 02 17 -13.1 -18.4 28.86 37 57 133 329 004 67 63 52 -13-14-14 000 6 02 18 -12.9 -18.0 28.87 38 58 134 330 004 69 64 53 -13-13-14 000 7 02 19 -13.1 -17.5 28.85 38 58 134 331 003 74 71 58 -13-14-14 000 8 02 20 -13.1 -17.4 28.87 37 56 134 331 000 75 72 61 -13-14-14 000 9 02 21 -13.5 -17.6 28.86 37 56 134 330 002 77 70 61 -13-14-14 000 10 02 22 -13.3 -17.4 28.91 34 54 132 329 000 77 71 61 -13-13-14 000 11 02 23 -12.6 -16.6 28.93 35 55 132 328 002 77 74 62 -12-13-13 000 12 03 00 -11.8 -15.8 28.93 35 54 131 327 -001 77 75 57 -12-12-13 000 13 03 01 -11.4 -15.5 28.96 36 54 130 326 -001 75 72 56 -11-12-13 000 14 03 02 -11.5 -15.8 29.01 35 52 128 325 -001 74 70 52 -11-12-13 000 15 03 03 -11.4 -15.7 29.02 33 51 129 325 000 74 71 50 -11-12-13 000 16 03 04 -11.7 -15.8 29.05 30 47 128 324 001 76 71 59 -11-12-14 000 17 03 05 -11.7 -15.7 29.07 27 44 130 327 006 76 73 64 -11-12-14 000 18 03 06 -11.9 -16.0 29.07 26 43 130 326 005 76 73 66 -12-13-14 000 19 03 07 -12.2 -16.3 29.07 27 44 128 324 -001 76 70 63 -12-13-14 000 20 03 08 -12.9 -17.1 29.06 26 43 127 324 -001 75 69 58 -12-14-15 000 21 03 09 -13.8 -17.9 29.07 24 43 129 326 000 77 69 56 -13-14-15 000 22 03 10 -14.7 -18.7 29.06 25 43 133 329 003 78 66 50 -14-14-16 000 23 03 11 -15.1 -19.1 29.06 26 43 134 330 001 78 63 47 -14-14-15 000 24 03 12 -14.8 -19.0 29.05 27 44 135 331 000 77 66 51 -14-14-15 000 25 03 13 -14.3 -18.7 29.03 28 46 133 330 -001 75 63 57 -13-13-14 000 26 03 14 -13.8 -18.3 29.01 28 48 133 329 001 73 66 69 -13-13-13 000 27 03 15 -13.0 -17.8 29.00 29 49 134 331 002 71 65 69 -11-12-13 000 28 03 16 -11.1 -15.4 28.98 31 51 134 331 002 74 71 85 -11-11-12 000 29 03 17 -10.5 -15.1 28.96 31 51 134 330 000 71 66 81 -10-11-12 000 30 03 18 -10.2 -14.6 28.96 32 51 134 331 001 72 70 85 -10-11-12 000 31 03 19 -10.3 -13.7 28.96 32 49 133 329 001 81 89 98 -11-12-12 002 32 03 20 -10.5 -14.1 28.95 30 48 137 334 001 79 78 83 -10-11-12 005 33 03 21 -11.1 -15.0 28.95 28 47 137 334 002 77 74 69 -11-11-12 000 34 03 22 -11.5 -15.9 28.94 28 48 136 332 003 73 66 72 -11-11-13 000 35 03 23 -11.8 -16.0 28.95 27 46 137 333 007 75 70 79 -11-12-13 000 36 04 00 -12.5 -16.4 28.96 28 45 137 333 000 77 72 70 -12-13-13 000 37 04 01 -13.0 -16.8 28.98 26 43 135 332 003 79 76 83 -12-13-14 000 38 04 02 -14.2 -17.7 29.01 22 38 123 319 002 82 82 90 -14-15-16 000 39 04 03 -15.0 -18.6 29.03 26 40 122 319 003 82 93 75 -15-17-18 000 40 04 04 -18.0 -20.9 29.07 27 39 120 316 002 91107 62 -18-20-18 000 41 04 05 -18.2 -20.8 29.12 25 37 118 314 000 94112 77 -19-20-18 000 42 04 06 -18.2 -20.8 29.16 20 32 107 303 -005 94106 87 -19-20-19 001 43 04 07 -18.3 -20.8 29.19 17 28 101 297 -004 96108103 -19-20-19 003 44 04 08 -19.6 -22.3 29.23 16 25 100 297 -001 94 99103 -20-21-18 013 45 04 09 -20.0 -22.8 29.27 16 24 95 292 001 94 97101 -21-21-19 014 46 04 10 -20.0 -23.0 29.31 17 24 100 297 000 92109 85 -21-22-19 006 47 04 11 -20.9 -23.8 29.36 16 23 101 297 -003 94 98 99 -22-21-18 004 48 04 12 -20.4 -23.1 29.39 14 19 103 300 001 95100109 -21-20-17 005 49 04 13 -19.3 -21.7 29.40 6 14 101 297 -001 97 94106 -17-18-18 009 50 04 14 -18.5 -20.6 29.42 6 15 139 336 001 100101105 -17-17-16 007 51 04 15 -17.7 -19.6 29.43 8 17 117 313 003 101 84102 -17-16-16 007 52 04 16 -19.8 -20.9 29.44 6 14 110 306 000 114 78 99 -16-16-16 000 53 04 17 -21.9 -22.2 29.45 3 10 113 309 000 123 82 95 -15-15-16 000 54 04 18 -22.8 -23.1 29.44 1 10 247 84 001 124 73 87 -15-15-16 000 55 04 19 -24.3 -25.1 29.44 4 12 228 64 000 125 70 77 -15-15-16 000 56 04 20 -24.1 -24.9 29.43 5 16 146 342 001 125 71 78 -15-15-16 000 57 04 21 -22.8 -23.5 29.43 7 20 132 329 -003 124 80 80 -16-16-17 000 58 04 22 -23.6 -24.1 29.44 11 20 112 308 000 125 89 80 -19-18-18 000 59 04 23 -24.6 -25.2 29.43 13 24 103 299 -002 125 88 79 -20-17-18 000 60 05 00 -25.2 -25.8 29.42 8 21 116 313 000 127 91 73 -20-17-17 000 61 05 01 -26.6 -27.3 29.41 7 16 145 341 005 129 85 74 -19-17-17 000 62 05 02 -27.3 -28.0 29.38 6 16 141 337 001 130 80 71 -17-17-17 000 63 05 03 -28.3 -29.1 29.35 4 18 154 351 -001 131 61 65 -15-16-16 000 64 05 04 -26.1 -26.8 29.31 8 19 139 336 002 127 48 66 -15-14-14 000 65 05 05 -25.9 -26.6 29.28 7 20 159 356 003 124 38 64 -14-13-14 000 66 05 06 -26.0 -26.5 29.25 7 17 175 12 004 126 34 61 -14-11-13 000 67 05 07 -26.5 -27.3 29.23 7 28 201 37 003 127 31 60 -13-10-12 000 68 05 08 -24.5 -25.6 29.19 10 31 194 31 000 117 28 54 -13-10-11 000 69 05 09 -22.9 -25.1 29.15 12 37 187 23 000 102 29 53 -13-10-10 000 70 05 10 -22.3 -24.9 29.12 11 39 191 28 001 97 38105 -13-10-11 000 71 05 11 -21.7 -24.0 29.09 10 41 194 30 -001 99 71107 -13-11-12 000 72 05 12 -15.0 -16.1 29.06 18 43 149 346 -002 105 96100 -13-12-13 000 73 05 13 -13.1 -14.4 29.04 23 42 146 342 000 101 97 91 -12-12-12 001 74 05 14 -12.4 -14.0 29.02 24 41 142 338 000 98 95 91 -12-12-13 001 75 05 15 -12.0 -14.0 29.01 22 38 138 334 001 94 93 81 -12-12-14 000 76 05 16 -11.8 -14.5 29.00 19 33 129 325 000 88 95 75 -12-13-14 000 77 05 17 -13.2 -15.6 28.99 20 34 128 324 000 92 91 69 -13-14-15 000 78 05 18 -14.7 -16.6 28.99 19 32 127 323 -003 98 93 66 -14-15-15 000 79 05 19 -15.2 -17.1 28.99 19 32 128 324 -002 97 95 66 -14-15-15 000 80 05 20 -15.5 -17.3 29.00 20 33 130 326 -002 99 93 66 -14-15-15 000 81 05 21 -15.6 -17.6 29.00 21 35 126 323 -001 98 90 66 -14-15-15 000 82 05 22 -15.6 -18.0 29.00 21 36 125 321 001 94 84 63 -14-15-15 000 83 05 23 -15.8 -18.4 29.00 20 35 125 321 001 92 77 61 -14-15-15 000 84 06 00 -16.4 -18.8 29.01 19 34 126 322 000 94 75 61 -15-15-16 000 85 06 01 -16.2 -18.3 29.00 19 35 129 325 -001 97 74 61 -14-14-15 000 86 06 02 -16.2 -18.6 29.00 20 34 130 327 -005 94 77 62 -15-15-16 000 87 06 03 -16.1 -19.1 29.00 20 36 128 324 000 88 77 59 -15-15-16 000 88 06 04 -15.8 -19.3 28.99 23 39 122 319 001 83 76 55 -14-15-15 000 89 06 05 -15.2 -19.1 28.99 25 40 124 320 -003 80 73 54 -14-15-15 000 90 06 06 -14.5 -18.5 28.98 25 40 125 321 -005 78 71 56 -14-15-14 000 91 06 07 -13.9 -17.9 28.97 25 40 124 320 -002 78 70 54 -14-15-14 000 92 06 08 -13.5 -17.6 28.96 26 43 121 318 -002 76 65 50 -14-14-14 000 93 06 09 -13.0 -17.5 28.95 27 43 122 318 001 73 61 51 -13-14-13 000 94 06 10 -12.8 -17.7 28.94 26 42 122 318 -004 70 56 47 -13-13-13 000 95 06 11 -13.1 -18.2 28.93 27 43 123 320 000 68 56 47 -13-14-13 000 96 06 12 -13.9 -19.3 28.92 27 46 124 320 000 67 54 42 -13-14-14 000 97 06 13 -14.9 -20.1 28.91 24 46 125 321 000 69 55 45 -14-14-15 000 98 06 14 -15.1 -20.3 28.89 25 46 126 322 004 68 56 49 -14-15-15 000 99 06 15 -15.1 -20.5 28.88 26 49 124 320 -001 67 54 56 -14-15-15 000 100 06 16 -14.9 -20.6 28.86 26 47 125 321 -001 65 53 59 -14-15-15 000 101 06 17 -15.4 -20.8 28.86 26 46 125 322 -001 68 58 62 -15-15-16 000 102 06 18 -15.2 -20.8 28.85 27 47 126 322 -003 66 57 65 -15-15-16 000 103 06 19 -15.4 -20.8 28.84 29 49 126 323 000 67 59 63 -15-16-16 000 104 06 20 -15.2 -20.9 28.84 29 49 126 323 000 65 58 65 -15-16-16 000 105 06 21 -15.8 -20.9 28.83 28 47 127 324 -001 70 65 69 -15-16-16 000 106 06 22 -15.8 -21.0 28.83 29 47 127 323 000 69 64 72 -15-16-15 000 107 06 23 -15.8 -20.9 28.81 29 48 129 325 000 70 65 69 -15-15-15 000 108 07 00 -15.5 -21.0 28.81 28 47 131 327 000 67 63 66 -15-15-15 000 109 07 01 -15.7 -21.0 28.80 27 48 131 327 002 68 64 86 -15-15-15 000 110 07 02 -15.5 -21.3 28.78 28 49 132 329 001 65 59 85 -14-14-15 000 111 07 03 -15.5 -21.1 28.77 30 50 132 328 000 66 64 82 -14-14-15 000 112 07 04 -15.4 -20.7 28.76 29 49 132 329 000 68 73 87 -14-15-15 000 113 07 05 -15.3 -20.4 28.74 30 50 132 329 002 70 80 88 -14-15-15 000 114 07 06 -15.2 -19.8 28.73 30 49 134 330 000 74 82 89 -14-14-15 000 115 07 07 -15.1 -19.7 28.72 31 50 133 330 000 74 75 79 -14-14-15 000 116 07 08 -15.1 -19.5 28.71 29 48 133 329 000 76 75 68 -14-14-15 000 117 07 09 -14.6 -18.9 28.71 30 47 131 328 -004 76 74 58 -14-15-16 000 118 07 10 -15.1 -19.3 28.71 28 46 130 327 000 78 75 56 -14-15-16 000 119 07 11 -15.5 -19.6 28.70 28 45 129 325 000 78 74 53 -15-15-16 000 120 07 12 -15.9 -19.9 28.70 27 44 128 325 003 79 72 51 -15-16-16 000 * 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.