USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-09-26/12 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 26 12 -11.4 -15.3 28.85 16 20 115 311 000 72 71 76 -11-11-12 000 1 26 13 -18.2 -19.2 28.87 9 15 91 287 001 112 78 74 -14-13-13 000 2 26 14 -22.8 -23.5 28.90 7 11 96 293 000 123 75 72 -17-15-14 000 3 26 15 -22.4 -23.8 28.90 8 15 78 275 003 112 80 83 -17-14-14 000 4 26 16 -21.9 -25.0 28.92 6 12 89 286 001 92 78 84 -18-14-14 000 5 26 17 -23.2 -26.5 28.92 6 11 100 297 003 90 76 82 -18-15-15 000 6 26 18 -24.8 -27.2 28.93 7 12 76 272 002 103 76 65 -18-14-15 000 7 26 19 -27.1 -28.5 28.94 6 12 104 300 004 120 80 54 -20-16-16 000 8 26 20 -27.7 -28.4 28.93 7 13 105 301 001 130 80 56 -21-17-17 000 9 26 21 -27.8 -28.7 28.92 9 17 101 298 000 125 66 56 -21-17-17 000 10 26 22 -28.5 -30.3 28.96 9 17 106 302 -001 114 61 61 -20-17-17 000 11 26 23 -28.8 -30.4 28.96 9 18 104 300 -004 117 75 54 -20-18-19 000 12 27 00 -29.0 -29.7 28.96 8 17 113 309 -003 131 80 57 -21-20-17 000 13 27 01 -28.9 -29.6 28.96 9 18 109 305 -001 132 63 49 -22-19-18 000 14 27 02 -29.0 -29.7 28.95 8 24 113 310 -011 132 56 47 -22-20-19 000 15 27 03 -28.3 -29.0 28.97 8 17 106 302 -010 131 50 56 -22-20-17 000 16 27 04 -29.4 -30.1 28.98 8 17 89 285 -011 132 47 64 -22-19-17 000 17 27 05 -30.3 -31.1 28.98 7 17 103 299 -006 133 48 58 -23-18-17 000 18 27 06 -30.5 -31.3 28.97 8 18 100 297 -008 133 57 54 -23-18-17 000 19 27 07 -31.7 -32.6 28.97 7 20 95 291 -008 135 77 50 -23-17-17 000 20 27 08 -32.1 -32.9 28.97 6 16 96 293 -006 135 74 50 -23-17-17 000 21 27 09 -31.1 -31.8 28.97 8 17 104 301 -009 134 76 49 -21-17-17 000 22 27 10 -30.8 -31.6 28.97 8 17 94 290 -006 134 74 64 -20-17-16 000 23 27 11 -32.1 -33.0 28.97 6 13 92 288 -003 136 86 68 -18-16-17 000 24 27 12 -26.5 -27.7 28.98 7 31 94 290 -004 119 78 62 -17-17-17 000 25 27 13 -20.3 -21.4 28.98 9 27 109 305 -003 113 81 59 -16-16-17 000 26 27 14 -16.2 -19.6 28.98 16 35 116 313 -006 85 73 58 -15-16-17 000 27 27 15 -17.9 -20.7 28.98 17 36 124 320 -002 91 68 59 -16-16-17 000 28 27 16 -18.0 -21.4 28.99 19 38 125 321 000 85 64 61 -16-16-17 000 29 27 17 -18.0 -21.8 28.99 20 38 126 322 000 82 63 62 -16-16-17 000 30 27 18 -17.8 -22.0 29.01 21 39 123 320 001 79 62 61 -16-16-18 000 31 27 19 -17.9 -22.2 29.02 21 39 119 316 000 78 64 62 -16-17-19 000 32 27 20 -18.2 -22.6 29.03 20 38 115 312 003 78 67 63 -17-18-19 000 33 27 21 -18.8 -22.9 29.03 18 35 107 304 -003 80 74 66 -18-19-20 000 34 27 22 -27.3 -28.5 29.06 10 28 90 287 -005 122 79 62 -20-19-20 000 35 27 23 -28.5 -30.0 29.07 9 20 97 294 000 119 74 62 -19-19-20 000 36 28 00 -29.5 -31.0 29.09 7 26 106 303 001 120 72 64 -19-19-20 000 37 28 01 -30.2 -31.8 29.10 6 10 101 298 -004 122 70 63 -19-19-20 000 38 28 02 -30.6 -32.0 29.11 6 10 108 304 -009 124 70 62 -19-19-20 000 39 28 03 -30.2 -31.1 29.11 6 16 115 311 -008 132 69 64 -19-19-20 000 40 28 04 -26.5 -27.0 29.12 9 29 118 314 -006 127 67 64 -19-19-20 000 41 28 05 -27.7 -28.5 29.12 7 29 97 294 -006 129 67 62 -19-18-20 000 42 28 06 -29.8 -30.7 29.14 6 17 102 298 -002 129 68 68 -18-18-20 000 43 28 07 -25.0 -26.1 29.14 10 32 122 319 -001 115 71 70 -18-19-20 000 44 28 08 -20.1 -23.9 29.14 17 33 127 323 -003 83 73 67 -19-19-20 000 45 28 09 -20.0 -23.8 29.14 18 31 119 315 -002 84 88 60 -20-21-22 000 46 28 10 -23.1 -25.4 29.16 14 33 100 297 -002 103 89 55 -22-22-21 000 47 28 11 -24.4 -26.3 29.19 12 27 105 301 -003 108 80 52 -21-21-20 000 48 28 12 -23.7 -25.7 29.19 7 26 121 317 -003 106 76 49 -20-20-21 000 49 28 13 -19.3 -23.0 29.19 16 30 128 324 -003 85 77 48 -19-20-21 000 50 28 14 -18.9 -22.7 29.19 17 32 125 321 -002 83 77 48 -18-19-21 000 51 28 15 -18.9 -22.9 29.19 18 34 124 320 000 81 73 52 -18-19-20 000 52 28 16 -19.7 -23.9 29.19 18 35 119 315 000 80 68 52 -19-19-20 000 53 28 17 -20.3 -24.6 29.18 16 34 115 311 001 79 64 53 -18-19-18 000 54 28 18 -19.9 -24.4 29.17 15 34 109 306 004 77 56 58 -17-17-17 000 55 28 19 -19.4 -24.2 29.16 15 34 104 301 000 74 54 49 -16-15-16 000 56 28 20 -19.6 -23.5 29.14 8 30 118 314 -001 81 46 49 -14-14-13 000 57 28 21 -20.4 -23.8 29.13 7 30 197 33 000 85 42 46 -13-14-12 000 58 28 22 -18.4 -22.9 29.12 9 27 143 339 -008 74 33 42 -16-12-11 000 59 28 23 -20.6 -23.7 29.11 5 15 169 5 -003 89 35 40 -16-12-10 000 60 29 00 -21.0 -22.7 29.11 7 25 208 44 000 107 55 37 -15-14-10 000 61 29 01 -21.7 -23.0 29.10 7 25 200 37 000 112 55 37 -14-14-10 000 62 29 02 -21.2 -22.9 29.07 8 29 196 33 001 107 42 42 -14-12-10 000 63 29 03 -19.5 -21.9 29.05 9 38 183 19 004 96 30 52 -13 -9-10 000 64 29 04 -15.4 -18.9 29.04 10 39 146 342 -001 82 68101 -11-10-12 000 65 29 05 -10.9 -13.2 29.02 25 43 136 333 -001 90 95102 -11-11-12 007 66 29 06 -10.5 -12.5 29.01 27 43 137 333 -005 93 98102 -11-11-12 021 67 29 07 -10.4 -12.4 29.01 28 43 137 333 -003 93 97103 -11-11-12 024 68 29 08 -10.2 -12.1 29.00 27 42 136 333 -004 93 98102 -11-11-12 018 69 29 09 -10.0 -12.0 29.00 27 40 137 333 -005 93 99 98 -10-11-12 008 70 29 10 -10.5 -12.0 29.00 25 40 137 334 -005 97 97 93 -10-11-11 001 71 29 11 -10.5 -11.9 29.00 24 39 135 332 -010 98 90 88 -10-11-12 000 72 29 12 -10.6 -13.0 29.01 22 37 132 329 -007 89 83 81 -10-11-12 000 73 29 13 -11.2 -14.4 29.02 22 37 132 328 -004 83 79 77 -11-12-12 000 74 29 14 -11.7 -15.0 29.04 22 37 130 326 000 81 78 78 -11-12-12 000 75 29 15 -12.3 -15.4 29.05 19 36 124 320 000 85 86 88 -12-13-13 000 76 29 16 -11.2 -14.1 29.06 25 38 126 322 -001 85 91 99 -12-13-13 000 77 29 17 -11.8 -14.1 29.07 26 38 128 324 -003 91 98100 -12-13-14 007 78 29 18 -12.0 -14.9 29.08 26 38 127 324 -002 86 91 99 -13-14-14 020 79 29 19 -12.3 -14.8 29.09 27 39 126 322 -005 89 96 98 -13-14-15 012 80 29 20 -12.0 -15.3 29.10 26 38 125 321 -006 83 88 97 -13-14-15 015 81 29 21 -11.8 -15.8 29.11 26 38 124 320 -003 77 78 94 -12-14-15 004 82 29 22 -12.0 -15.9 29.12 26 39 123 319 -002 78 81 92 -13-14-15 000 83 29 23 -12.2 -16.7 29.12 27 40 122 318 -001 72 70 80 -13-14-15 000 84 30 00 -12.3 -17.1 29.13 27 40 122 319 -003 70 66 66 -13-14-15 000 85 30 01 -12.4 -17.4 29.13 27 42 123 320 -002 69 63 57 -13-14-15 000 86 30 02 -12.4 -17.4 29.14 28 43 123 320 -003 69 61 52 -13-14-15 000 87 30 03 -12.7 -17.7 29.15 28 44 123 320 -003 68 58 50 -13-14-15 000 88 30 04 -13.3 -18.2 29.15 28 44 124 321 000 70 55 46 -13-14-15 000 89 30 05 -13.1 -18.1 29.16 29 44 124 320 000 69 56 44 -13-14-15 000 90 30 06 -13.1 -18.3 29.17 29 44 122 319 003 68 55 45 -13-14-15 000 91 30 07 -13.7 -18.8 29.18 29 44 121 318 003 68 53 41 -14-14-15 000 92 30 08 -14.5 -19.8 29.19 28 43 120 316 000 68 49 37 -14-14-14 000 93 30 09 -15.0 -20.2 29.20 26 42 118 314 -003 68 43 37 -14-14-14 000 94 30 10 -15.9 -21.3 29.21 24 41 115 311 -002 68 39 35 -15-14-13 000 95 30 11 -17.1 -22.3 29.21 20 38 117 313 -001 70 38 26 -15-15-14 000 96 30 12 -18.4 -23.2 29.21 18 37 123 319 -004 73 36 13 -16-15-15 000 97 30 13 -18.4 -24.0 29.21 19 38 116 313 -002 67 30 16 -15-15-15 000 98 30 14 -18.1 -24.2 29.19 19 37 103 300 004 62 26 17 -14-14-11 000 99 30 15 -19.3 -25.0 29.18 17 36 101 297 -006 67 24 19 -14-13-11 000 100 30 16 -19.7 -25.5 29.17 15 36 102 298 000 66 19 21 -13-12-11 000 101 30 17 -21.2 -26.1 29.17 11 32 124 320 -001 72 17 23 -14-12-11 000 102 30 18 -21.8 -26.5 29.16 10 37 151 347 -001 74 18 20 -13-11-11 000 103 30 19 -20.7 -25.8 29.15 11 36 156 352 005 70 23 22 -14-12-11 000 104 30 20 -21.0 -25.5 29.14 12 36 153 349 000 76 26 22 -14-12-11 000 105 30 21 -21.5 -25.8 29.13 12 32 146 342 001 78 28 19 -14-12-11 000 106 30 22 -22.0 -26.3 29.12 11 26 149 345 005 80 31 18 -14-11-11 000 107 30 23 -22.5 -25.9 29.12 10 31 149 346 001 89 31 15 -12-11-10 000 108 01 00 -22.0 -25.8 29.11 10 34 151 347 -001 84 25 18 -12-10-10 000 109 01 01 -23.0 -25.6 29.10 9 31 148 344 002 98 21 19 -12-10-10 000 110 01 02 -22.7 -25.3 29.09 9 36 146 342 004 96 18 18 -13-10-10 000 111 01 03 -20.5 -24.7 29.09 12 41 130 327 003 79 17 20 -14-10-11 000 112 01 04 -18.4 -23.8 29.09 17 35 113 309 005 68 24 16 -13-11-12 000 113 01 05 -19.6 -24.6 29.10 14 38 119 315 003 72 26 18 -13-11-12 000 114 01 06 -20.1 -25.0 29.10 14 42 117 314 006 73 28 18 -12-13-14 000 115 01 07 -18.0 -24.2 29.10 20 46 114 310 008 62 31 16 -13-14-15 000 116 01 08 -16.8 -23.5 29.10 24 48 115 312 010 58 32 16 -14-15-15 000 117 01 09 -16.9 -23.9 29.10 25 48 116 312 010 56 31 18 -14-15-15 000 118 01 10 -16.7 -24.0 29.10 27 50 117 313 012 55 31 17 -14-15-15 000 119 01 11 -17.1 -24.2 29.09 26 50 117 313 006 56 30 18 -14-15-15 000 120 01 12 -16.7 -24.0 29.10 27 49 119 315 001 55 32 20 -14-15-16 000 * 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.