USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-01-29/12 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 29 12 -19.1 -22.3 28.95 2 4 134 330 000 80 57 78 -13-12-11 000 1 29 13 -19.0 -20.8 28.94 3 4 117 313 000 103 59 77 -13-11-11 000 2 29 14 -20.1 -20.8 28.95 2 3 97 293 -001 116 60 77 -12-11-11 000 3 29 15 -21.1 -21.8 28.95 3 3 118 314 000 122 62100 -12-11-11 000 4 29 16 -21.1 -21.8 28.95 3 3 109 306 000 122 63 95 -12-11-11 000 5 29 17 -20.5 -21.5 28.94 2 2 66 263 001 116 64 97 -11-10-10 000 6 29 18 -20.3 -21.1 28.94 1 3 128 324 000 115 68 98 -12-11-10 000 7 29 19 -19.9 -21.0 28.93 0 2 151 347 001 111 65 97 -11-11-10 000 8 29 20 -19.1 -20.9 28.92 1 1 272 109 001 103 73 65 -12-10 -9 000 9 29 21 -18.3 -20.5 28.93 1 1 30 226 001 99 75 69 -11-10 -9 000 10 29 22 -17.3 -19.6 28.93 2 3 33 229 001 97 73 70 -10 -9 -9 000 11 29 23 -17.1 -19.2 28.90 1 1 114 310 000 98 77 81 -12-10 -9 000 12 30 00 -16.7 -19.4 28.92 4 5 97 293 002 92 83 90 -12-11-10 000 13 30 01 -16.5 -19.2 28.91 6 8 101 298 000 92 88 90 -13-11-10 000 14 30 02 -16.4 -19.1 28.93 6 10 102 299 000 91 70 92 -13-10-10 000 15 30 03 -16.4 -19.2 28.95 6 11 127 323 002 90 67 94 -13-10-10 000 16 30 04 -16.4 -19.2 28.95 7 11 133 329 000 91 69 93 -13-10-10 000 17 30 05 -16.7 -19.5 28.95 7 13 126 322 000 91 68 91 -13-10-10 000 18 30 06 -17.2 -19.6 28.94 7 13 141 337 002 94 69 92 -12-10 -9 000 19 30 07 -17.8 -19.9 28.94 6 13 146 342 002 98 68 90 -12-10 -9 000 20 30 08 -18.4 -20.3 28.94 6 12 132 329 000 102 64 86 -11-10 -9 000 21 30 09 -18.6 -20.1 28.93 6 14 134 330 000 108 64 83 -11 -9 -9 000 22 30 10 -18.5 -19.6 28.93 7 13 134 331 000 112 66 76 -10 -9 -9 000 23 30 11 -18.8 -19.6 28.93 6 14 139 335 003 117 68 71 -9 -9 -9 000 24 30 12 -17.9 -18.5 28.92 8 21 139 335 003 118 64 67 -9 -9 -8 000 25 30 13 -15.7 -16.1 28.93 9 28 135 332 002 115 60 67 -9 -8 -8 000 26 30 14 -12.9 -15.0 28.94 15 29 126 322 000 93 58 65 -10 -9 -9 000 27 30 15 -12.7 -15.3 28.94 14 28 123 320 -001 89 61 62 -10-10 -9 000 28 30 16 -12.8 -15.7 28.94 13 26 126 322 -001 86 62 58 -11-10 -9 000 29 30 17 -12.6 -15.7 28.94 13 26 131 327 002 84 63 55 -11-11-10 000 30 30 18 -12.3 -15.4 28.95 13 27 132 328 001 83 61 55 -10-11-10 000 31 30 19 -11.6 -14.9 28.95 13 27 127 324 001 81 59 54 -10-11-10 000 32 30 20 -11.0 -14.5 28.96 14 27 124 320 001 80 57 52 -10-11-10 000 33 30 21 -10.8 -14.2 28.96 14 26 125 322 001 80 58 52 -10-11-10 000 34 30 22 -10.5 -13.9 28.96 14 26 125 321 000 80 58 53 -10-10-10 000 35 30 23 -10.2 -13.6 28.96 13 25 124 320 000 80 58 51 -10-10-10 000 36 31 00 -10.1 -13.4 28.97 13 25 123 319 001 80 56 49 -10-10 -9 000 37 31 01 -10.0 -13.3 28.97 12 24 119 316 000 80 52 47 -9 -9 -8 000 38 31 02 -10.1 -13.2 28.98 11 23 122 318 000 82 55 46 -9 -9 -8 000 39 31 03 -10.3 -13.2 28.98 11 22 124 320 001 83 57 45 -9 -9 -8 000 40 31 04 -10.6 -13.5 28.99 11 22 127 324 001 84 61 40 -9-10 -9 000 41 31 05 -10.9 -13.8 28.99 11 22 127 323 001 84 61 36 -9 -9 -9 000 42 31 06 -11.2 -14.1 29.01 10 22 123 320 000 85 59 34 -9 -9 -8 000 43 31 07 -11.8 -14.5 29.01 10 22 117 314 001 87 58 34 -9 -9 -9 000 44 31 08 -12.4 -14.8 29.01 9 21 125 322 000 90 64 33 -9 -9 -9 000 45 31 09 -12.9 -14.9 29.03 9 19 126 323 000 94 67 30 -9 -9 -9 000 46 31 10 -13.1 -15.0 29.04 10 20 123 319 000 96 65 30 -9 -9 -9 000 47 31 11 -13.2 -15.2 29.04 10 21 119 315 000 94 63 32 -9 -9 -9 000 48 31 12 -13.1 -15.5 29.05 10 23 122 319 001 91 63 35 -9 -9 -8 000 49 31 13 -13.3 -15.8 29.06 9 19 120 317 000 90 59 37 -9 -9 -8 000 50 31 14 -13.3 -16.0 29.08 9 20 130 326 000 88 63 39 -10 -9 -8 000 51 31 15 -13.0 -15.7 29.10 11 20 128 325 000 87 67 37 -11-10 -8 000 52 31 16 -13.0 -15.8 29.11 11 21 128 324 -001 88 69 35 -11-10 -8 000 53 31 17 -13.1 -15.9 29.12 11 21 119 315 000 88 60 41 -11 -8 -7 000 54 31 18 -13.2 -15.8 29.11 11 22 111 308 003 89 50 42 -10 -7 -7 000 55 31 19 -12.6 -15.3 29.12 11 20 126 322 -003 88 72 47 -12 -9 -8 000 56 31 20 -12.3 -15.0 29.14 13 22 121 318 -001 88 78 45 -12-10 -8 000 57 31 21 -11.9 -14.7 29.14 11 21 120 316 000 87 74 47 -11 -9 -8 000 58 31 22 -11.4 -14.2 29.15 11 22 116 312 000 86 68 50 -11 -7 -7 000 59 31 23 -11.0 -13.7 29.16 11 21 117 313 001 87 70 44 -11 -8 -7 000 60 01 00 -11.0 -13.3 29.17 12 19 118 314 000 91 84 43 -12 -8 -7 000 61 01 01 -10.7 -11.1 29.18 12 18 115 311 000 108112 37 -12-12 -7 000 62 01 02 -9.0 -9.8 29.18 12 17 118 315 000 102112 31 -10-11 -6 000 63 01 03 -8.3 -9.5 29.18 12 16 123 319 000 98111 30 -9-11 -7 000 64 01 04 -8.8 -10.3 29.18 10 15 119 315 000 96102 30 -9 -9 -8 000 65 01 05 -8.2 -9.3 29.18 9 14 123 320 000 98110 31 -9-10 -8 000 66 01 06 -7.4 -8.6 29.18 9 14 122 319 000 97110 32 -8-10-10 000 67 01 07 -7.6 -9.2 29.18 10 14 130 326 000 93109 32 -8 -9-10 000 68 01 08 -7.7 -9.2 29.18 11 16 131 327 000 94109 36 -7 -9-10 000 69 01 09 -7.2 -8.5 29.18 13 18 136 332 -001 96108 39 -7 -8 -9 000 70 01 10 -6.6 -8.1 29.18 11 17 132 328 -002 94108 48 -7 -8 -9 000 71 01 11 -6.6 -8.0 29.17 10 18 130 327 -002 94107 56 -7 -8 -8 000 72 01 12 -7.1 -8.8 29.17 11 18 132 328 000 91105 68 -7 -7 -8 000 73 01 13 -7.1 -8.9 29.17 11 17 129 325 000 91107 81 -7 -7 -8 000 74 01 14 -7.0 -8.8 29.16 11 16 127 324 -002 91105 95 -7 -7 -8 004 75 01 15 -6.7 -8.1 29.16 11 17 126 322 -002 95102102 -7 -7 -7 015 76 01 16 -5.9 -7.0 29.16 12 17 127 323 -002 96103102 -6 -6 -7 026 77 01 17 -6.2 -7.5 29.15 12 16 129 326 -001 95 99103 -6 -6 -7 023 78 01 18 -6.1 -7.6 29.14 11 16 134 330 -001 93100104 -7 -6 -6 014 79 01 19 -6.0 -7.7 29.14 11 16 133 329 -001 91 97106 -7 -5 -6 008 80 01 20 -5.8 -7.8 29.13 10 18 133 330 000 89 95106 -6 -6 -6 005 81 01 21 -5.8 -7.7 29.12 10 19 130 327 000 89 95103 -6 -6 -6 003 82 01 22 -5.4 -7.2 29.12 9 19 131 327 000 90 96 98 -6 -7 -6 001 83 01 23 -5.3 -7.0 29.11 11 18 131 328 000 90 99 95 -6 -6 -6 001 84 02 00 -5.2 -6.5 29.10 11 16 130 327 000 93104103 -6 -6 -6 002 85 02 01 -5.0 -6.1 29.09 10 15 132 328 000 95105100 -6 -6 -7 006 86 02 02 -4.0 -5.2 29.08 8 13 131 328 -002 94106 96 -5 -6 -8 002 87 02 03 -3.8 -5.0 29.07 7 9 99 295 -002 93106101 -5 -6 -7 005 88 02 04 -3.9 -4.9 29.06 7 11 94 290 -001 96106104 -5 -6 -7 010 89 02 05 -4.5 -5.5 29.06 8 10 112 308 -002 96105104 -5 -6 -7 010 90 02 06 -4.7 -5.6 29.05 5 12 125 321 -001 97 99104 -5 -6 -7 010 91 02 07 -4.9 -5.7 29.04 5 8 156 353 -001 97 94108 -5 -5 -7 010 92 02 08 -4.1 -4.9 29.03 8 13 147 343 000 97106104 -5 -5 -7 018 93 02 09 -4.7 -5.7 29.04 12 16 142 338 000 96105102 -5 -6 -7 013 94 02 10 -5.8 -6.7 29.04 10 17 146 342 000 98104103 -6 -6 -7 009 95 02 11 -6.5 -7.1 29.04 9 17 144 340 000 102104101 -6 -6 -7 006 96 02 12 -6.9 -7.1 29.04 8 16 141 337 000 106106102 -6 -7 -7 002 97 02 13 -6.2 -6.7 29.04 8 14 133 329 000 103107103 -6 -7 -7 001 98 02 14 -7.6 -7.9 29.04 7 13 129 325 000 107106106 -6 -7 -7 001 99 02 15 -7.2 -7.4 29.04 7 15 138 335 000 107107106 -6 -7 -8 000 100 02 16 -7.8 -8.0 29.04 8 15 137 333 000 107107109 -6 -7 -7 000 101 02 17 -7.2 -7.7 29.05 9 14 134 330 000 104106106 -6 -6 -7 000 102 02 18 -6.3 -7.4 29.05 9 13 130 326 000 97105105 -7 -6 -7 000 103 02 19 -6.0 -7.2 29.06 9 14 126 323 001 96104108 -7 -7 -7 000 104 02 20 -5.8 -7.0 29.06 10 14 128 324 001 95103110 -7 -6 -7 000 105 02 21 -5.8 -7.0 29.07 10 14 130 327 000 95103109 -7 -6 -7 000 106 02 22 -5.6 -6.8 29.08 10 13 130 326 001 95100110 -6 -6 -8 000 107 02 23 -5.0 -6.4 29.08 8 11 126 322 002 93101108 -6 -6 -7 000 108 03 00 -4.9 -6.3 29.07 9 11 134 330 001 92105104 -5 -7 -8 000 109 03 01 -4.8 -6.2 29.07 9 11 128 325 001 92105102 -5 -6 -8 000 110 03 02 -5.1 -6.5 29.07 10 12 129 326 000 93106108 -6 -7 -7 000 111 03 03 -5.2 -6.4 29.07 9 13 123 320 000 95106103 -6 -6 -7 000 112 03 04 -5.4 -6.2 29.07 9 12 122 319 000 98101108 -6 -6 -7 000 113 03 05 -5.5 -5.7 29.08 9 11 118 314 000 104 96106 -6 -6 -7 000 114 03 06 -5.9 -6.0 29.08 10 13 130 327 000 106 96 88 -5 -6 -7 000 115 03 07 -5.3 -6.3 29.08 13 17 132 329 000 97 98 78 -5 -6 -7 000 116 03 08 -4.6 -5.5 29.09 14 18 133 329 000 96102 86 -5 -6 -7 000 117 03 09 -4.6 -5.6 29.09 16 20 130 326 -001 96106 81 -5 -6 -7 000 118 03 10 -4.7 -5.7 29.09 16 22 132 328 000 96107 78 -5 -7 -8 000 119 03 11 -4.6 -5.5 29.09 15 21 128 324 002 97107 80 -5 -6 -7 000 120 03 12 -4.6 -5.9 29.09 16 23 134 331 -001 93106 77 -5 -6 -7 000 * 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.