USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-05-01/12 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 01 12 -39.2 -43.7 29.32 9 13 137 334 000 91 77 79 -34-31-29 000 1 01 13 -41.5 -43.4 29.31 8 12 151 347 000 127 79 74 -33-30-29 000 2 01 14 -43.2 -45.2 29.28 7 15 164 1 000 128 84 74 -31-30-29 000 3 01 15 -44.3 -46.3 29.24 6 18 165 1 000 129 68 69 -29-28-28 000 4 01 16 -45.7 -47.9 29.22 6 15 199 35 002 129 57 59 -28-27-27 000 5 01 17 -47.2 -49.3 29.18 7 16 203 39 003 132 52 46 -27-26-26 000 6 01 18 -45.9 -48.2 29.15 8 15 196 33 000 127 43 39 -25-26-26 000 7 01 19 -47.8 -49.8 29.11 7 16 192 29 001 134 39 37 -24-24-26 000 8 01 20 -46.6 -48.5 29.07 8 17 200 37 004 134 36 38 -23-23-23 000 9 01 21 -46.6 -48.9 29.05 8 19 201 38 004 128 30 42 -21-21-21 000 10 01 22 -42.8 -44.5 29.03 10 26 193 29 004 129 31 39 -20-20-21 000 11 01 23 -41.0 -42.7 29.00 10 35 190 26 003 129 30 40 -21-19-20 000 12 02 00 -40.7 -42.1 28.96 8 28 180 17 -001 133 28 38 -19-18-18 000 13 02 01 -33.9 -35.2 28.93 12 32 138 335 000 125 21 36 -21-16-17 000 14 02 02 -37.8 -39.0 28.92 6 18 191 27 000 132 22 36 -21-16-17 000 15 02 03 -36.2 -36.6 28.89 9 40 160 357 000 139 27 51 -19-16-17 000 16 02 04 -27.2 -29.2 28.87 15 49 143 339 -001 105 37 59 -17-16-18 000 17 02 05 -19.8 -26.0 28.86 25 54 136 333 -003 63 48 67 -17-17-18 000 18 02 06 -17.7 -23.9 28.85 32 55 133 330 -001 63 57 77 -16-17-18 000 19 02 07 -17.1 -22.9 28.83 34 55 135 331 000 65 62 85 -16-17-18 000 20 02 08 -16.9 -22.2 28.82 35 56 136 332 000 70 72 90 -16-17-18 000 21 02 09 -16.7 -20.1 28.83 36 56 137 333 000 85 92 93 -16-17-17 000 22 02 10 -16.1 -19.6 28.84 36 57 137 334 -001 84 85 91 -16-16-17 000 23 02 11 -15.7 -19.9 28.85 36 58 137 333 000 77 75 78 -15-16-17 000 24 02 12 -15.5 -20.3 28.85 38 59 137 334 002 73 71 61 -15-16-17 000 25 02 13 -16.0 -20.7 28.85 38 59 135 332 001 73 73 60 -16-16-18 000 26 02 14 -16.1 -20.9 28.87 38 59 134 330 -002 73 73 59 -16-17-18 000 27 02 15 -16.1 -20.9 28.88 38 59 134 330 -003 73 72 57 -16-17-17 000 28 02 16 -16.2 -20.9 28.87 37 59 134 330 -002 74 73 54 -16-17-17 000 29 02 17 -16.1 -20.8 28.88 37 59 133 329 -002 74 72 52 -16-17-17 000 30 02 18 -15.9 -20.8 28.88 38 59 132 329 003 72 69 51 -15-16-17 000 31 02 19 -15.8 -20.5 28.88 37 58 132 328 000 74 72 53 -15-16-17 000 32 02 20 -15.8 -20.3 28.89 37 58 132 328 000 76 69 55 -15-16-16 000 33 02 21 -15.6 -20.0 28.89 38 59 132 328 -008 76 71 52 -15-16-16 000 34 02 22 -15.4 -19.7 28.91 38 59 132 328 -005 77 70 55 -15-15-16 000 35 02 23 -15.1 -19.3 28.95 35 56 130 326 -002 77 72 60 -15-15-15 000 36 03 00 -14.4 -18.5 28.97 33 53 130 327 000 78 73 54 -14-14-15 000 37 03 01 -13.8 -17.8 28.99 33 53 129 325 -001 77 70 47 -13-14-15 000 38 03 02 -13.7 -17.7 29.02 32 51 128 325 001 77 70 47 -13-14-15 000 39 03 03 -13.9 -18.2 29.04 29 47 127 323 005 76 70 52 -13-14-16 000 40 03 04 -14.5 -18.6 29.05 27 44 130 327 006 77 71 48 -14-15-16 000 41 03 05 -15.0 -19.2 29.06 25 44 130 326 007 77 69 47 -14-15-16 000 42 03 06 -15.8 -20.0 29.06 26 45 133 329 007 78 65 47 -15-15-16 000 43 03 07 -16.1 -20.1 29.06 26 45 133 329 011 79 65 44 -15-15-16 000 44 03 08 -16.1 -20.3 29.05 28 46 135 332 001 78 64 45 -15-15-16 000 45 03 09 -16.0 -20.0 29.04 28 46 136 332 -003 79 66 53 -15-14-15 000 46 03 10 -15.2 -19.1 29.02 30 49 136 332 004 80 65 62 -14-13-14 000 47 03 11 -14.1 -17.9 29.01 29 49 136 332 001 79 66 73 -13-13-13 000 48 03 12 -12.6 -16.0 28.99 30 49 136 333 005 81 75 77 -12-12-13 000 49 03 13 -12.3 -16.3 28.98 31 50 134 330 002 77 71 61 -12-12-13 000 50 03 14 -12.3 -16.6 28.96 31 51 132 328 001 75 67 63 -12-12-13 000 51 03 15 -12.7 -17.3 28.95 29 51 131 328 002 72 61 66 -12-12-13 000 52 03 16 -12.2 -17.0 28.93 29 50 134 330 -003 70 60 63 -11-11-12 000 53 03 17 -11.9 -16.3 28.92 28 50 135 331 000 73 68 73 -11-11-12 000 54 03 18 -11.1 -14.3 28.91 31 50 135 331 -001 82 88 95 -11-11-12 000 55 03 19 -10.5 -12.6 28.90 33 49 135 331 -004 91 98 97 -11-11-12 006 56 03 20 -10.2 -13.8 28.89 33 50 137 333 -007 79 79 83 -10-11-12 006 57 03 21 -9.9 -13.5 28.89 31 49 135 332 -006 79 79 89 -10-11-12 003 58 03 22 -10.2 -14.3 28.90 31 49 138 334 009 74 75 69 -10-11-13 000 59 03 23 -11.8 -15.9 28.90 28 49 143 339 003 76 71 77 -11-12-13 000 60 04 00 -12.4 -16.7 28.89 31 51 138 334 008 74 74 78 -12-13-14 000 61 04 01 -13.4 -17.2 28.90 30 49 129 326 005 79 82 60 -13-14-15 000 62 04 02 -15.3 -19.0 28.95 28 46 113 310 000 81 87 80 -15-16-17 000 63 04 03 -14.1 -17.6 28.99 26 46 120 316 -007 82 85 74 -13-14-16 000 64 04 04 -15.9 -19.3 29.05 31 46 110 307 -009 85 97 66 -16-18-18 000 65 04 05 -16.8 -19.8 29.10 24 38 105 302 -003 89100105 -17-18-18 000 66 04 06 -15.3 -18.1 29.14 22 35 108 305 -001 89105113 -16-17-19 003 67 04 07 -17.0 -20.0 29.17 24 34 104 301 -001 89104108 -18-19-20 003 68 04 08 -19.4 -22.5 29.22 23 34 96 292 -003 91103 94 -20-21-21 005 69 04 09 -20.5 -23.5 29.28 23 34 96 293 -002 91102 97 -21-23-23 005 70 04 10 -20.1 -22.9 29.34 20 30 109 305 -005 94 97101 -21-21-22 015 71 04 11 -19.5 -22.2 29.39 20 29 109 305 -005 94100101 -20-21-22 012 72 04 12 -18.9 -21.4 29.44 20 28 106 303 -002 96106102 -19-20-22 020 73 04 13 -20.0 -23.0 29.49 16 26 84 280 -011 91 91105 -20-22-22 014 74 04 14 -18.7 -21.0 29.52 14 23 109 305 -002 98 99105 -19-20-21 011 75 04 15 -18.0 -20.3 29.55 16 23 112 309 000 97 97107 -18-19-20 013 76 04 16 -17.8 -20.1 29.58 15 22 124 321 -003 97102103 -18-19-19 015 77 04 17 -18.2 -20.7 29.59 16 24 127 323 -002 96 98102 -18-18-19 017 78 04 18 -18.7 -21.0 29.60 15 25 126 323 -003 98 96 99 -19-18-18 004 79 04 19 -19.6 -21.5 29.61 14 23 129 325 001 103 97 95 -19-18-18 001 80 04 20 -20.9 -22.0 29.61 13 25 128 325 000 113 95 93 -19-18-18 000 81 04 21 -22.1 -22.6 29.61 12 24 129 326 -003 123 90 88 -19-18-17 000 82 04 22 -22.8 -23.3 29.60 13 25 127 324 -002 124 89 89 -19-17-17 000 83 04 23 -23.4 -23.9 29.59 13 28 128 325 002 124 84 84 -20-17-16 000 84 05 00 -23.6 -24.8 29.58 14 30 127 323 002 115 74 68 -20-18-16 000 85 05 01 -23.7 -25.4 29.56 14 31 126 322 000 109 67 56 -20-18-16 000 86 05 02 -24.3 -26.5 29.54 12 31 130 326 000 104 63 48 -19-18-16 000 87 05 03 -25.0 -27.0 29.52 12 29 144 340 -003 106 60 55 -19-19-16 000 88 05 04 -25.8 -28.0 29.50 12 32 139 335 -001 106 60 44 -19-19-16 000 89 05 05 -25.6 -28.0 29.48 11 32 135 332 000 102 54 42 -18-18-17 000 90 05 06 -26.5 -28.9 29.46 12 30 138 335 000 104 49 39 -17-17-17 000 91 05 07 -27.3 -29.0 29.44 10 29 144 341 003 113 49 39 -16-17-17 000 92 05 08 -27.4 -29.0 29.42 11 24 156 352 002 116 49 41 -17-17-18 000 93 05 09 -28.6 -29.5 29.39 9 23 153 350 004 127 42 41 -16-16-17 000 94 05 10 -27.6 -29.3 29.36 10 24 150 347 002 113 37 41 -16-15-16 000 95 05 11 -27.1 -29.1 29.34 12 32 159 355 001 110 34 40 -16-15-15 000 96 05 12 -28.0 -29.5 29.31 10 28 173 9 001 117 30 40 -16-14-15 000 97 05 13 -29.5 -30.4 29.29 8 30 175 11 001 129 30 39 -16-13-14 000 98 05 14 -30.6 -31.3 29.26 9 30 197 33 000 133 28 40 -15-13-14 000 99 05 15 -30.9 -31.6 29.23 8 19 189 25 000 133 24 41 -14-12-13 000 100 05 16 -30.2 -31.0 29.21 8 22 181 17 001 133 24 41 -15-12-13 000 101 05 17 -29.2 -29.9 29.18 8 19 180 16 001 131 22 43 -14-12-13 000 102 05 18 -29.1 -29.8 29.16 9 23 188 25 001 131 23 42 -14-13-13 000 103 05 19 -29.3 -30.0 29.14 9 22 188 25 001 131 25 50 -15-12-13 000 104 05 20 -29.3 -29.9 29.12 9 26 190 26 000 131 28 55 -15-12-13 000 105 05 21 -29.1 -29.8 29.10 9 33 193 29 000 131 46 42 -14-13-14 000 106 05 22 -28.6 -29.2 29.09 9 31 194 31 002 130 63 50 -15-13-15 000 107 05 23 -26.9 -28.2 29.07 11 33 192 29 004 118 88 85 -15-14-15 000 108 06 00 -25.9 -27.7 29.05 11 36 187 24 005 110100 67 -14-14-15 000 109 06 01 -24.2 -25.0 29.03 11 36 175 12 003 119102 85 -14-15-16 000 110 06 02 -22.1 -22.5 29.01 12 35 171 8 002 122100 94 -16-15-16 000 111 06 03 -20.8 -21.2 28.99 12 34 163 359 000 120 98 97 -15-15-17 000 112 06 04 -18.1 -18.5 28.98 17 34 151 347 000 118 92 87 -15-16-17 000 113 06 05 -17.8 -18.1 28.97 15 33 150 346 001 117 93 84 -15-16-17 000 114 06 06 -15.7 -17.5 28.95 17 32 147 344 -002 99 92 84 -15-16-17 000 115 06 07 -15.2 -17.9 28.94 18 31 144 341 -001 90 89 81 -15-16-18 000 116 06 08 -15.5 -19.0 28.92 17 30 140 336 002 83 79 80 -15-16-17 000 117 06 09 -15.5 -19.3 28.91 17 29 138 335 000 80 74 71 -15-17-17 000 118 06 10 -15.7 -19.6 28.89 16 28 138 334 -002 80 72 63 -16-17-17 000 119 06 11 -16.0 -19.8 28.88 16 27 139 335 -001 81 70 62 -16-17-17 000 120 06 12 -16.1 -19.8 28.87 15 26 139 335 001 82 71 61 -16-16-17 000 * 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.