USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-05-01/00 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 01 00 -41.3 -45.4 29.36 8 10 129 326 000 99 94 73 -35-31-30 000 1 01 01 -43.8 -45.6 29.34 8 11 123 320 001 130 93 69 -35-31-30 000 2 01 02 -45.6 -47.6 29.37 7 12 125 321 001 130 93 70 -34-31-30 000 3 01 03 -46.7 -48.7 29.37 7 13 126 323 000 131 91 71 -34-31-30 000 4 01 04 -47.2 -49.2 29.37 7 13 123 320 002 132 88 70 -34-31-30 000 5 01 05 -47.8 -49.8 29.37 6 12 139 335 001 131 87 71 -34-31-30 000 6 01 06 -48.5 -50.8 29.38 7 13 138 334 001 127 86 75 -34-31-30 000 7 01 07 -48.8 -51.0 29.39 7 15 138 335 001 129 85 79 -34-31-30 000 8 01 08 -48.8 -50.7 29.36 7 15 133 330 001 131 80 80 -34-30-29 000 9 01 09 -49.8 -52.0 29.37 7 15 152 348 000 125 80 81 -35-31-30 000 10 01 10 -49.1 -51.0 29.36 8 17 148 344 000 133 77 81 -35-31-30 000 11 01 11 -48.4 -50.3 29.37 9 20 138 334 000 134 75 78 -35-31-30 000 12 01 12 -48.1 -50.2 29.35 9 20 138 334 000 132 71 79 -35-31-30 000 13 01 13 -48.4 -50.3 29.32 6 20 135 331 001 134 74 79 -34-32-30 000 14 01 14 -49.0 -50.8 29.30 6 20 171 7 000 133 82 78 -32-30-29 000 15 01 15 -48.0 -49.5 29.27 6 20 151 348 001 135 67 65 -32-29-29 000 16 01 16 -49.1 -51.2 29.23 3 19 197 33 000 123 54 61 -32-28-28 000 17 01 17 -49.7 -52.6 29.19 3 20 211 47 000 110 66 45 -30-30-27 000 18 01 18 -51.0 -53.2 29.15 5 23 217 53 001 119 49 42 -28-29-26 000 19 01 19 -49.5 -51.6 29.12 5 15 212 48 -001 122 45 38 -26-26-25 000 20 01 20 -49.2 -51.2 29.10 6 18 213 50 000 127 45 36 -25-25-23 000 21 01 21 -46.8 -48.2 29.06 8 18 196 32 001 142 39 41 -23-23-22 000 22 01 22 -47.0 -48.6 29.03 8 17 208 44 001 139 33 41 -22-20-20 000 23 01 23 -41.7 -42.4 29.00 10 36 160 356 002 140 28 36 -20-19-20 000 24 02 00 -43.7 -45.6 28.98 9 29 170 7 004 130 34 36 -20-19-20 000 25 02 01 -35.9 -36.1 28.94 13 42 156 352 000 139 32 37 -20-19-19 000 26 02 02 -35.4 -36.2 28.92 11 39 160 356 -001 132 35 43 -20-19-19 000 27 02 03 -29.0 -32.2 28.91 15 51 141 337 -001 95 40 53 -20-19-19 000 28 02 04 -20.7 -27.6 28.88 28 52 129 325 000 59 47 56 -18-19-20 000 29 02 05 -19.4 -26.1 28.87 31 55 130 327 -001 60 51 68 -18-19-20 000 30 02 06 -18.7 -24.8 28.86 32 54 134 330 -003 64 59 74 -18-19-20 000 31 02 07 -18.2 -23.9 28.86 34 54 133 330 -003 67 65 78 -18-18-19 000 32 02 08 -18.2 -23.3 28.85 33 54 135 331 000 72 71 79 -17-18-19 000 33 02 09 -17.9 -22.6 28.85 34 55 136 333 -003 75 74 75 -17-18-18 000 34 02 10 -17.5 -21.8 28.86 34 54 135 332 -005 78 75 68 -17-17-18 000 35 02 11 -16.9 -21.2 28.86 35 54 135 331 -004 77 76 58 -17-18-19 000 36 02 12 -16.9 -21.6 28.86 35 54 133 329 -002 75 74 56 -17-18-19 000 37 02 13 -17.0 -21.7 28.87 36 55 133 329 -001 74 74 55 -17-18-19 000 38 02 14 -17.4 -21.9 28.88 36 55 132 329 -004 76 75 54 -17-18-18 000 39 02 15 -17.4 -21.8 28.89 34 54 132 329 -002 77 76 53 -17-18-18 000 40 02 16 -17.2 -21.7 28.89 34 55 130 327 -001 76 69 50 -17-17-17 000 41 02 17 -16.5 -21.2 28.90 36 56 130 327 000 74 65 52 -16-16-17 000 42 02 18 -16.3 -21.1 28.89 36 57 130 326 002 73 65 54 -16-16-17 000 43 02 19 -16.3 -21.2 28.89 37 57 130 326 000 72 65 60 -16-16-17 000 44 02 20 -16.1 -20.9 28.89 39 58 129 326 -002 73 66 62 -16-16-16 000 45 02 21 -15.7 -20.3 28.90 39 58 131 328 -002 74 68 57 -15-15-16 000 46 02 22 -14.8 -19.3 28.92 37 56 128 325 -009 74 67 58 -14-14-15 000 47 02 23 -13.6 -18.0 28.94 37 54 128 324 -005 75 70 57 -13-14-15 000 48 03 00 -13.0 -17.3 28.96 35 52 127 323 -008 75 74 57 -13-14-15 000 49 03 01 -14.0 -18.3 28.97 33 51 127 323 -012 76 72 51 -14-15-16 000 50 03 02 -14.7 -19.1 28.98 34 52 128 325 -009 75 66 48 -14-15-16 000 51 03 03 -14.1 -18.6 28.99 33 50 129 325 -007 74 67 60 -14-15-15 000 52 03 04 -13.6 -18.1 29.00 32 48 126 323 000 74 67 63 -14-14-15 000 53 03 05 -12.9 -17.2 28.99 34 49 129 325 004 75 69 64 -13-14-15 000 54 03 06 -12.8 -16.9 29.00 31 47 126 323 -002 76 71 68 -12-13-14 000 55 03 07 -12.6 -16.5 28.99 31 47 125 321 012 78 72 67 -12-13-14 000 56 03 08 -12.8 -16.6 28.98 30 47 125 321 -009 79 71 64 -12-13-14 000 57 03 09 -13.1 -17.0 28.97 28 47 128 324 012 78 69 63 -12-13-14 000 58 03 10 -12.4 -16.4 28.96 30 48 130 327 008 77 67 58 -12-12-13 000 59 03 11 -11.9 -15.9 28.95 31 48 129 325 000 77 68 62 -12-12-13 000 60 03 12 -11.4 -15.5 28.95 32 49 128 325 004 76 65 59 -11-12-13 000 61 03 13 -11.6 -15.6 28.94 31 49 128 324 -005 76 64 58 -11-11-12 000 62 03 14 -11.7 -15.4 28.94 30 48 130 326 000 79 66 62 -11-11-12 000 63 03 15 -11.3 -15.1 28.94 29 47 131 327 -005 77 65 67 -11-11-12 000 64 03 16 -11.2 -15.1 28.94 30 47 133 329 -003 77 63 64 -11-11-12 000 65 03 17 -10.3 -13.9 28.95 28 44 133 330 -010 78 70 63 -10-11-12 000 66 03 18 -10.8 -14.8 28.95 25 43 131 328 -004 75 66 60 -10-11-12 000 67 03 19 -11.3 -15.3 28.96 26 44 135 332 -005 76 68 65 -10-11-13 000 68 03 20 -12.3 -16.2 28.97 24 43 133 330 004 78 66 70 -11-12-13 000 69 03 21 -13.1 -16.9 28.98 26 43 137 334 004 78 73 77 -12-13-14 000 70 03 22 -13.5 -17.5 29.00 26 42 139 336 -005 78 77 82 -13-14-15 000 71 03 23 -14.7 -18.7 29.02 26 44 122 318 007 79 80 61 -14-15-17 000 72 04 00 -16.7 -20.6 29.08 26 40 117 313 -011 81 87 62 -17-18-19 000 73 04 01 -18.2 -21.6 29.13 24 35 113 309 -005 87105 58 -19-20-22 000 74 04 02 -19.7 -22.5 29.21 22 33 105 301 -008 94114 77 -20-22-23 000 75 04 03 -19.0 -21.9 29.27 21 29 106 302 -006 92103 96 -20-21-22 002 76 04 04 -18.8 -21.5 29.34 20 28 97 293 -012 94102102 -20-21-22 025 77 04 05 -19.1 -21.6 29.40 16 26 92 289 -006 95100104 -20-20-20 024 78 04 06 -18.4 -20.8 29.44 12 21 103 299 -004 97 99105 -18-20-18 023 79 04 07 -17.3 -19.4 29.46 12 19 123 319 000 99 95107 -17-18-18 020 80 04 08 -17.0 -19.0 29.48 11 21 137 333 000 99 99103 -17-17-17 010 81 04 09 -16.4 -18.3 29.48 11 22 135 331 -001 100100100 -16-17-17 014 82 04 10 -16.4 -18.1 29.48 11 23 133 330 -001 102103103 -16-17-17 005 83 04 11 -16.9 -19.1 29.49 13 23 136 333 -002 97 86 99 -17-17-17 002 84 04 12 -19.5 -21.9 29.50 14 25 133 330 000 96 71 67 -17-17-18 000 85 04 13 -20.4 -22.8 29.50 14 26 131 327 -001 98 73 67 -18-18-18 000 86 04 14 -21.4 -23.8 29.49 13 26 126 322 -001 98 71 67 -18-18-19 000 87 04 15 -21.7 -23.9 29.50 10 24 116 312 -002 101 76 72 -19-19-19 000 88 04 16 -24.3 -25.0 29.51 9 20 102 298 000 125 79 75 -20-19-19 000 89 04 17 -26.0 -26.6 29.52 8 17 103 300 -002 128 77 79 -20-19-19 000 90 04 18 -28.3 -29.0 29.53 7 16 110 306 -005 131 79 86 -20-20-20 000 91 04 19 -29.3 -30.1 29.53 8 16 107 303 -003 132 77 77 -20-20-20 000 92 04 20 -29.7 -30.5 29.53 7 16 107 303 -004 133 79 68 -21-20-20 000 93 04 21 -30.0 -30.8 29.53 7 16 130 326 -002 133 85 64 -22-21-20 000 94 04 22 -29.0 -29.6 29.54 11 22 119 315 000 132 91 75 -25-21-19 000 95 04 23 -28.4 -28.9 29.53 13 25 119 315 -002 131 82 88 -23-20-19 000 96 05 00 -28.5 -29.1 29.54 10 23 117 313 000 131 77 85 -23-20-18 000 97 05 01 -30.2 -31.0 29.53 7 16 100 296 -002 133 79 77 -22-21-19 000 98 05 02 -32.0 -32.9 29.51 6 16 89 285 000 135 73 74 -21-20-19 000 99 05 03 -32.8 -33.6 29.49 6 18 91 287 -006 136 69 66 -20-19-18 000 100 05 04 -34.4 -36.0 29.48 4 10 220 56 008 125 68 64 -21-19-17 000 101 05 05 -29.7 -30.4 29.47 7 15 175 12 003 131 73 66 -21-20-17 000 102 05 06 -29.5 -30.1 29.46 6 8 186 22 -001 131 72 72 -23-20-17 000 103 05 07 -31.8 -32.7 29.44 7 8 218 54 000 134 69 74 -23-19-17 000 104 05 08 -32.9 -33.7 29.41 6 9 227 64 004 136 69 69 -20-19-18 000 105 05 09 -32.8 -33.6 29.39 5 12 221 58 000 136 68 70 -18-19-19 000 106 05 10 -33.0 -33.3 29.37 4 13 191 27 002 137 67 67 -19-19-17 000 107 05 11 -33.6 -34.4 29.36 6 12 195 31 003 137 67 67 -21-18-17 000 108 05 12 -33.8 -34.5 29.34 7 15 205 41 -002 137 69 66 -20-18-16 000 109 05 13 -33.1 -33.8 29.33 8 17 200 36 -006 136 62 65 -18-18-18 000 110 05 14 -30.9 -31.4 29.31 9 22 188 24 -005 132 61 68 -19-18-18 000 111 05 15 -32.8 -33.6 29.30 7 12 205 42 -005 136 57 67 -18-19-18 000 112 05 16 -34.9 -35.3 29.29 3 13 204 41 001 140 56 71 -17-18-19 000 113 05 17 -37.2 -38.5 29.28 5 13 230 66 000 138 54 71 -17-18-17 000 114 05 18 -30.7 -31.1 29.27 8 13 203 40 004 132 46 69 -17-17-17 000 115 05 19 -28.9 -29.2 29.26 8 11 201 38 008 127 42 80 -16-15-16 000 116 05 20 -29.3 -29.5 29.26 5 14 200 37 003 131 32 84 -14-15-16 000 117 05 21 -31.6 -31.8 29.26 2 9 170 7 -001 135 31 80 -13-14-16 000 118 05 22 -35.2 -36.2 29.26 3 5 188 24 010 134 32 74 -14-14-15 000 119 05 23 -36.1 -37.4 29.27 5 7 199 35 002 132 33 71 -15-14-15 000 120 06 00 -31.9 -33.0 29.26 2 10 138 335 001 121 31 52 -16-14-15 000 * 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.