USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-01-31/12 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 31 12 -12.0 -16.1 29.07 11 14 133 330 000 70 40 32 -9 -8 -8 000 1 31 13 -13.2 -16.5 29.09 9 21 140 337 000 81 43 33 -9 -8 -8 000 2 31 14 -13.5 -16.8 29.10 11 25 140 337 -001 83 44 31 -10 -8 -8 000 3 31 15 -13.5 -16.9 29.12 15 30 139 335 000 82 48 31 -11 -9 -8 000 4 31 16 -12.9 -17.0 29.11 15 29 123 319 000 76 41 32 -10 -8 -8 000 5 31 17 -12.6 -16.6 29.12 14 26 117 314 000 77 45 30 -11 -8 -8 000 6 31 18 -12.9 -16.3 29.14 12 22 128 324 001 83 51 29 -11 -9 -8 000 7 31 19 -12.8 -16.1 29.15 13 20 136 332 000 83 50 29 -12 -9 -8 000 8 31 20 -12.4 -15.8 29.14 15 22 134 330 001 82 56 31 -13-10 -8 000 9 31 21 -11.9 -15.3 29.16 14 22 125 321 -001 81 51 35 -12 -9 -8 000 10 31 22 -11.4 -14.7 29.16 13 23 122 318 001 82 48 40 -11 -9 -8 000 11 31 23 -10.9 -14.4 29.15 13 25 129 326 000 80 50 42 -11 -9 -8 000 12 01 00 -10.6 -14.4 29.15 13 25 127 324 -001 77 41 47 -10 -9 -9 000 13 01 01 -10.5 -13.9 29.14 12 23 133 330 000 80 52 42 -10-10 -9 000 14 01 02 -10.6 -13.8 29.15 13 22 125 321 000 81 64 42 -11-10 -8 000 15 01 03 -10.8 -13.7 29.15 12 22 124 320 000 84 62 44 -11 -9 -8 000 16 01 04 -11.1 -13.8 29.16 11 19 130 327 -005 87 56 35 -10 -8 -7 000 17 01 05 -11.8 -14.2 29.16 10 19 140 337 -001 89 58 26 -10 -8 -8 000 18 01 06 -12.1 -14.6 29.16 10 20 136 332 000 89 69 22 -10 -9 -8 000 19 01 07 -12.3 -14.7 29.16 11 21 133 329 000 90 78 43 -10-10 -8 000 20 01 08 -12.6 -14.8 29.15 11 21 134 331 000 92 83 47 -10-10 -8 000 21 01 09 -13.0 -15.0 29.14 11 21 130 326 000 94 87 49 -10-10 -8 000 22 01 10 -13.3 -15.2 29.14 11 20 124 320 -003 96 88 47 -11-10 -8 000 23 01 11 -13.1 -15.1 29.14 12 22 119 316 000 95 93 46 -12-10 -7 000 24 01 12 -12.1 -12.4 29.13 14 19 127 323 000 112109 44 -12-10 -7 000 25 01 13 -11.4 -11.7 29.12 14 19 134 330 000 110111 42 -11-11 -7 000 26 01 14 -10.0 -10.7 29.12 17 21 134 330 -001 104110 41 -9-10-11 000 27 01 15 -8.9 -10.3 29.12 16 22 134 330 -001 96109 59 -9 -9 -9 000 28 01 16 -8.8 -10.8 29.11 17 22 136 333 000 91109 99 -9 -8 -9 000 29 01 17 -8.4 -10.2 29.10 16 23 131 327 000 92107104 -9 -8 -8 006 30 01 18 -7.8 -9.6 29.09 16 23 130 326 -001 93100103 -9 -7 -8 015 31 01 19 -7.4 -9.1 29.09 16 23 130 327 -002 93 99101 -8 -7 -7 024 32 01 20 -7.3 -9.0 29.09 16 23 131 327 000 92 99100 -8 -8 -7 018 33 01 21 -6.9 -8.6 29.08 17 23 131 327 -002 92 99101 -8 -7 -7 015 34 01 22 -6.5 -8.1 29.07 17 23 130 327 000 92 99101 -8 -7 -7 012 35 01 23 -6.1 -7.6 29.05 17 23 130 327 000 93 99101 -7 -7 -7 016 36 02 00 -5.9 -7.3 29.05 16 22 129 325 -001 94100101 -7 -7 -7 014 37 02 01 -5.7 -7.0 29.04 15 21 129 326 000 94100102 -7 -7 -7 015 38 02 02 -5.7 -7.0 29.03 15 20 130 327 000 94100101 -7 -6 -7 010 39 02 03 -5.6 -6.9 29.02 15 20 130 327 -002 95100100 -6 -6 -7 008 40 02 04 -5.6 -6.8 29.01 14 19 131 327 -002 95100100 -6 -6 -7 008 41 02 05 -5.5 -6.8 29.00 14 19 132 329 -001 95 99100 -6 -6 -6 012 42 02 06 -5.8 -7.0 29.00 14 19 132 329 -001 95 99103 -6 -6 -6 014 43 02 07 -6.0 -7.2 28.99 14 20 134 330 -002 96 99103 -6 -6 -6 014 44 02 08 -6.3 -7.5 28.99 14 20 136 332 -002 96100102 -6 -6 -6 010 45 02 09 -6.4 -7.7 28.99 14 20 136 333 -001 96100101 -6 -6 -6 014 46 02 10 -6.7 -8.0 28.99 14 21 136 332 -002 95101103 -6 -6 -6 012 47 02 11 -7.1 -8.4 28.98 14 22 136 332 -001 95103102 -6 -6 -6 008 48 02 12 -7.2 -8.6 28.97 15 22 137 333 -001 95103101 -6 -6 -6 007 49 02 13 -7.6 -8.9 28.97 15 22 138 335 000 96102102 -6 -6 -6 007 50 02 14 -7.6 -8.8 28.98 14 22 138 334 -001 97102105 -6 -6 -6 003 51 02 15 -7.8 -8.8 28.98 14 23 139 336 001 98101106 -6 -6 -6 002 52 02 16 -7.2 -8.4 28.98 15 23 138 335 -001 97101106 -6 -5 -6 004 53 02 17 -6.8 -8.0 28.98 16 22 138 334 -005 96104105 -7 -5 -6 004 54 02 18 -6.9 -8.1 28.98 16 24 137 333 000 96101107 -7 -5 -6 002 55 02 19 -6.4 -7.8 28.98 17 24 137 333 000 95 99103 -7 -5 -6 001 56 02 20 -6.2 -7.7 28.98 17 24 136 333 000 93 96106 -7 -6 -6 006 57 02 21 -6.0 -7.4 28.98 17 24 138 335 -002 93 97104 -7 -6 -6 008 58 02 22 -5.8 -7.3 28.98 17 24 137 333 -003 93 99106 -7 -6 -6 003 59 02 23 -5.5 -7.0 28.98 18 25 137 334 -002 92 95103 -6 -5 -5 002 60 03 00 -5.3 -7.0 28.98 18 26 138 334 -001 91 94 96 -6 -5 -5 000 61 03 01 -5.2 -6.9 28.97 19 26 139 336 -001 90 95 93 -6 -5 -5 001 62 03 02 -5.0 -6.8 28.97 19 27 139 335 000 89 95 92 -6 -5 -5 000 63 03 03 -4.9 -6.8 28.97 20 29 139 336 000 88 92 93 -5 -4 -5 000 64 03 04 -4.9 -7.0 28.96 20 29 139 335 -001 87 95 99 -5 -4 -5 000 65 03 05 -5.0 -7.1 28.96 20 30 141 338 000 86 93 98 -5 -4 -4 000 66 03 06 -4.9 -7.4 28.95 19 30 139 335 -001 83 87 98 -5 -4 -5 000 67 03 07 -5.3 -8.3 28.95 16 31 138 334 -002 80 76 95 -5 -4 -5 000 68 03 08 -5.3 -8.4 28.95 17 31 138 334 000 78 75 95 -5 -4 -4 000 69 03 09 -5.1 -8.2 28.95 18 32 138 335 000 78 85 97 -5 -4 -4 000 70 03 10 -4.9 -7.7 28.94 19 32 136 333 -001 81 92101 -5 -4 -4 004 71 03 11 -4.9 -7.5 28.94 20 32 134 331 -002 82 95103 -5 -4 -4 009 72 03 12 -5.0 -7.6 28.94 20 33 131 328 -001 83 96104 -5 -4 -4 011 73 03 13 -5.3 -7.8 28.94 20 33 132 328 -001 83 99103 -5 -4 -4 012 74 03 14 -5.6 -8.2 28.94 20 33 131 327 -001 83 99104 -5 -4 -4 007 75 03 15 -5.7 -8.6 28.93 19 33 130 326 -001 81 97105 -5 -4 -4 004 76 03 16 -5.7 -8.6 28.93 18 31 129 325 -001 81 96105 -5 -4 -4 003 77 03 17 -5.6 -8.5 28.93 17 31 130 326 -001 81 95105 -5 -4 -4 005 78 03 18 -5.3 -8.2 28.93 16 30 127 324 000 80 93105 -5 -5 -5 003 79 03 19 -4.9 -7.8 28.93 16 29 128 324 -002 80 92106 -5 -5 -5 003 80 03 20 -4.6 -7.4 28.92 17 28 130 326 000 80 91105 -5 -5 -4 003 81 03 21 -4.4 -7.3 28.91 16 28 131 327 000 80 86104 -4 -5 -4 002 82 03 22 -4.1 -7.1 28.91 15 28 129 326 000 78 82105 -4 -5 -4 000 83 03 23 -4.0 -7.3 28.90 15 28 125 321 000 76 75105 -4 -4 -4 000 84 04 00 -3.5 -7.1 28.89 16 27 126 322 001 74 79107 -3 -3 -4 000 85 04 01 -3.6 -7.2 28.88 14 26 124 320 001 74 72107 -3 -3 -3 000 86 04 02 -3.8 -7.4 28.88 13 24 123 319 000 74 67104 -3 -3 -4 000 87 04 03 -5.3 -8.7 28.87 11 24 130 326 000 76 53 97 -1 -3 -4 000 88 04 04 -6.3 -9.0 28.86 8 20 139 336 000 81 33 83 -3 -2 -3 000 89 04 05 -7.5 -9.7 28.86 5 17 151 347 000 84 29 63 -4 -1 -2 000 90 04 06 -8.3 -10.4 28.85 4 14 168 5 001 89 28 49 -5 0 -1 000 91 04 07 -8.9 -11.0 28.84 4 17 167 3 000 89 25 46 -5 0 -1 000 92 04 08 -8.9 -11.5 28.83 7 25 152 348 000 82 25 43 -3 0 -1 000 93 04 09 -8.6 -11.5 28.83 9 25 149 346 000 81 26 49 -3 0 -1 000 94 04 10 -9.2 -12.1 28.83 8 26 161 358 000 80 25 50 -4 0 -1 000 95 04 11 -9.8 -12.4 28.83 7 31 155 352 000 83 27 55 -4 0 -1 000 96 04 12 -8.6 -11.8 28.83 10 35 149 346 001 79 35 73 -4 -1 -2 000 97 04 13 -7.2 -10.9 28.83 15 37 144 340 000 75 44 76 -3 -2 -3 000 98 04 14 -6.0 -9.9 28.83 18 40 138 335 000 73 54 78 -3 -3 -4 000 99 04 15 -5.3 -9.3 28.83 21 40 134 331 -002 72 57 76 -2 -3 -4 000 100 04 16 -5.2 -9.2 28.83 21 39 131 328 -001 71 57 68 -2 -3 -4 000 101 04 17 -5.0 -9.1 28.84 21 38 131 327 -001 71 56 69 -3 -4 -4 000 102 04 18 -4.9 -9.0 28.85 20 38 130 326 -001 71 52 60 -3 -4 -4 000 103 04 19 -4.6 -8.8 28.86 20 37 129 325 -001 70 49 59 -3 -3 -4 000 104 04 20 -4.6 -8.8 28.87 19 37 127 324 000 70 48 59 -3 -4 -4 000 105 04 21 -4.4 -8.7 28.88 19 36 127 324 000 69 51 55 -3 -4 -4 000 106 04 22 -4.4 -8.6 28.89 18 34 130 327 000 70 54 51 -3 -4 -4 000 107 04 23 -4.4 -8.5 28.90 19 34 132 328 002 70 56 48 -3 -4 -4 000 108 05 00 -4.4 -8.5 28.90 18 34 132 329 001 71 57 48 -3 -4 -5 000 109 05 01 -4.5 -8.4 28.91 18 33 133 329 002 72 62 54 -3 -4 -5 000 110 05 02 -4.6 -8.3 28.91 18 33 134 330 001 73 76 70 -4 -4 -5 000 111 05 03 -4.6 -8.2 28.91 19 31 133 330 002 74 87 91 -3 -3 -5 000 112 05 04 -4.5 -8.8 28.91 20 34 139 335 002 70 79 99 -3 -2 -4 000 113 05 05 -4.1 -7.9 28.91 21 34 136 333 004 72 69107 -4 -2 -3 000 114 05 06 -3.9 -7.3 28.91 21 34 139 335 004 75 73100 -4 -2 -3 000 115 05 07 -4.2 -7.5 28.92 22 34 140 337 001 76 83106 -4 -3 -3 000 116 05 08 -4.5 -7.5 28.93 21 32 140 336 001 79 83106 -5 -2 -3 000 117 05 09 -4.7 -7.5 28.94 21 31 137 334 001 80 83107 -5 -2 -3 000 118 05 10 -5.0 -7.9 28.95 19 30 134 330 004 79 87107 -5 -4 -3 000 119 05 11 -5.5 -8.4 28.97 20 30 132 328 001 80 92106 -6 -4 -4 000 120 05 12 -5.9 -8.8 28.98 19 29 132 329 000 81 90107 -6 -4 -3 000 * 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.