USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2026-10-16/00 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 16 00 -11.8 -15.9 29.08 13 15 134 330 000 72 58 42 -11-12-12 000 1 16 01 -13.3 -16.5 29.06 10 23 141 338 001 84 54 42 -10-11-12 000 2 16 02 -14.3 -17.3 29.06 10 25 147 343 000 85 52 41 -10-11-12 000 3 16 03 -14.4 -18.3 29.04 13 29 145 341 000 78 54 43 -10-11-12 000 4 16 04 -14.9 -18.9 29.04 12 29 140 337 000 78 51 43 -10-11-12 000 5 16 05 -16.2 -19.3 29.03 11 25 158 354 002 87 46 37 -10-11-12 000 6 16 06 -16.3 -20.2 29.01 11 29 136 333 002 78 44 62 -12-12-12 000 7 16 07 -17.0 -20.7 28.99 12 26 148 344 000 81 49 59 -13-13-14 000 8 16 08 -17.9 -21.0 28.96 12 27 159 355 001 88 48 35 -13-13-14 000 9 16 09 -18.3 -20.7 28.97 13 29 155 351 004 95 52 37 -14-14-14 000 10 16 10 -17.9 -21.6 28.94 16 33 141 337 003 83 57 47 -15-15-15 000 11 16 11 -17.5 -21.5 28.94 17 34 137 333 003 80 60 64 -15-16-16 000 12 16 12 -17.4 -21.4 28.92 19 35 137 334 003 80 62 61 -16-16-17 000 13 16 13 -17.7 -21.7 28.92 19 35 139 335 002 80 63 58 -16-17-18 000 14 16 14 -17.9 -22.1 28.92 19 35 133 329 000 79 61 55 -17-17-18 000 15 16 15 -18.0 -22.3 28.92 19 35 135 331 001 78 60 52 -17-17-18 000 16 16 16 -18.0 -22.2 28.90 18 34 134 330 -002 79 59 47 -17-17-18 000 17 16 17 -18.0 -22.1 28.87 17 33 138 334 001 80 60 47 -17-17-18 000 18 16 18 -17.6 -21.7 28.87 18 34 133 329 000 79 60 46 -17-17-18 000 19 16 19 -16.9 -21.0 28.86 19 34 134 330 -001 79 62 47 -16-17-18 000 20 16 20 -16.4 -20.3 28.82 20 35 135 332 000 80 65 48 -16-16-17 000 21 16 21 -15.8 -19.7 28.80 21 36 134 331 000 80 67 47 -15-16-17 000 22 16 22 -15.0 -18.8 28.78 21 36 135 331 000 80 69 50 -15-15-16 000 23 16 23 -14.2 -18.0 28.77 21 37 134 330 000 80 68 55 -14-15-16 000 24 17 00 -13.8 -17.5 28.75 21 37 133 329 001 80 73 54 -13-14-16 000 25 17 01 -13.6 -17.4 28.74 22 39 129 325 004 79 71 50 -13-14-15 000 26 17 02 -13.1 -16.9 28.73 22 40 129 325 000 80 68 48 -12-13-15 000 27 17 03 -12.5 -16.1 28.71 23 40 128 325 -001 80 67 47 -12-12-14 000 28 17 04 -12.5 -16.2 28.69 23 39 127 323 001 79 64 52 -12-12-13 000 29 17 05 -13.0 -16.4 28.67 21 38 131 328 000 82 67 56 -12-12-12 000 30 17 06 -13.1 -16.6 28.66 21 38 130 326 001 81 70 55 -12-12-12 000 31 17 07 -13.3 -16.7 28.66 22 38 131 328 001 82 71 55 -12-12-12 000 32 17 08 -13.3 -16.7 28.65 22 39 131 328 -001 82 69 56 -12-12-12 000 33 17 09 -13.0 -16.1 28.64 23 39 133 330 -002 84 66 51 -11-11-11 000 34 17 10 -12.3 -16.1 28.63 24 40 134 330 001 79 60 49 -11-11-10 000 35 17 11 -12.5 -16.4 28.63 24 40 133 329 000 77 56 51 -11-10-10 000 36 17 12 -11.8 -15.9 28.62 24 43 131 328 003 76 55 53 -10-10-10 000 37 17 13 -11.0 -15.2 28.60 24 44 131 328 001 75 59 53 -10-10-10 000 38 17 14 -9.8 -14.1 28.59 27 45 130 327 002 73 63 53 -9-10-10 000 39 17 15 -10.1 -14.0 28.59 28 45 132 328 000 76 68 56 -10-10-10 000 40 17 16 -10.4 -14.5 28.59 30 48 132 328 002 75 66 60 -10-10-10 000 41 17 17 -10.8 -15.0 28.59 32 49 132 328 002 74 67 62 -11-11-11 000 42 17 18 -10.8 -15.1 28.60 33 49 131 327 002 73 68 62 -11-11-11 000 43 17 19 -10.9 -15.2 28.61 33 49 128 325 -001 73 68 61 -11-12-11 000 44 17 20 -11.2 -15.4 28.62 31 49 129 325 -007 74 70 59 -11-12-12 000 45 17 21 -11.1 -15.4 28.62 31 49 131 327 -008 74 70 58 -11-12-12 000 46 17 22 -10.7 -15.1 28.63 32 50 131 327 -007 73 67 60 -11-11-11 000 47 17 23 -10.2 -14.4 28.64 33 50 130 327 000 74 66 61 -10-10-10 000 48 18 00 -9.7 -13.7 28.66 33 49 131 328 004 75 72 66 -10-10-10 000 49 18 01 -9.3 -13.2 28.68 34 49 131 327 -001 75 73 62 -10-10-10 000 50 18 02 -9.1 -13.0 28.70 34 49 133 329 -005 75 73 62 -9-10-10 000 51 18 03 -9.6 -13.7 28.72 35 50 136 332 -012 74 70 63 -10-10-10 000 52 18 04 -9.9 -14.1 28.74 34 51 136 332 -004 74 70 66 -10-10-10 000 53 18 05 -10.0 -14.3 28.75 35 52 136 332 -011 73 68 63 -10-10-10 000 54 18 06 -10.2 -14.4 28.76 34 51 136 332 -004 74 71 66 -10-11-10 000 55 18 07 -10.4 -14.4 28.76 35 53 133 329 -004 75 71 63 -10-10 -9 000 56 18 08 -10.6 -14.6 28.78 35 52 132 328 -013 76 72 58 -10-10 -9 000 57 18 09 -10.6 -14.6 28.80 35 52 130 327 -013 76 74 52 -10-10-10 000 58 18 10 -11.0 -14.9 28.84 34 50 131 328 -016 77 76 50 -11-11-11 000 59 18 11 -11.2 -15.3 28.87 34 49 130 326 -016 76 73 41 -11-11-11 000 60 18 12 -11.3 -15.4 28.89 33 49 130 327 -011 75 71 47 -11-11-11 000 61 18 13 -11.2 -15.4 28.89 33 49 130 327 -011 75 71 50 -11-11-11 000 62 18 14 -11.7 -16.0 28.90 33 49 131 327 -014 74 71 44 -12-12-12 000 63 18 15 -12.0 -16.2 28.90 33 49 131 328 -009 75 70 41 -12-12-12 000 64 18 16 -12.1 -16.3 28.91 30 46 131 328 -009 76 72 44 -12-12-12 000 65 18 17 -12.0 -16.1 28.91 29 45 132 328 -011 76 71 42 -12-12-12 000 66 18 18 -11.3 -15.4 28.91 31 46 132 328 -011 75 69 46 -11-12-12 000 67 18 19 -11.1 -15.2 28.91 31 46 133 330 -005 75 67 48 -11-11-12 000 68 18 20 -10.3 -14.5 28.91 31 47 134 330 -012 74 64 45 -10-11-11 000 69 18 21 -9.6 -13.9 28.90 31 47 133 329 -005 73 62 47 -10-10-10 000 70 18 22 -9.1 -13.2 28.89 30 46 132 328 -002 74 60 50 -9 -9 -9 000 71 18 23 -8.8 -12.8 28.88 30 46 132 329 000 74 62 49 -9 -9 -9 000 72 19 00 -8.6 -12.6 28.87 30 46 131 327 -001 74 60 52 -8 -8 -8 000 73 19 01 -8.3 -12.4 28.86 30 46 129 326 001 73 59 53 -8 -8 -7 000 74 19 02 -8.4 -12.5 28.85 30 46 126 322 -003 73 59 56 -8 -8 -7 000 75 19 03 -8.3 -12.6 28.84 32 48 124 321 -007 71 59 55 -9 -9 -7 000 76 19 04 -9.4 -13.9 28.83 31 48 121 317 004 71 56 51 -9 -9 -7 000 77 19 05 -9.6 -13.9 28.83 28 46 125 321 000 72 65 50 -10-10-10 000 78 19 06 -9.8 -14.2 28.82 28 47 131 328 001 72 70 52 -10-11-12 000 79 19 07 -9.9 -14.6 28.80 32 51 129 326 -011 71 68 52 -10-11-12 000 80 19 08 -10.1 -14.9 28.80 33 52 131 327 -011 69 67 54 -10-11-13 000 81 19 09 -10.3 -15.3 28.78 37 56 129 325 010 68 64 50 -10-12-12 000 82 19 10 -10.4 -15.6 28.76 39 58 124 320 009 66 60 48 -11-12-12 000 83 19 11 -10.5 -15.9 28.77 39 59 124 320 000 65 59 46 -11-12-12 000 84 19 12 -11.1 -16.6 28.77 38 59 124 321 -007 64 57 47 -11-12-13 000 85 19 13 -11.5 -17.1 28.77 38 59 124 320 -004 64 56 46 -11-12-13 000 86 19 14 -11.6 -17.1 28.78 36 57 126 322 -001 65 57 49 -11-12-13 000 87 19 15 -11.5 -17.0 28.78 36 57 125 321 -009 65 58 48 -11-12-13 000 88 19 16 -11.4 -16.8 28.78 36 57 126 322 -002 65 59 49 -11-12-13 000 89 19 17 -11.3 -16.8 28.77 37 58 126 322 -003 65 57 47 -11-12-13 000 90 19 18 -11.3 -16.8 28.77 37 58 124 321 -003 65 56 46 -11-12-13 000 91 19 19 -11.4 -16.8 28.77 36 56 124 320 -006 65 57 46 -11-12-13 000 92 19 20 -11.3 -16.7 28.77 35 55 125 321 001 65 57 45 -11-12-13 000 93 19 21 -11.3 -16.7 28.77 34 54 125 321 -004 65 57 45 -11-12-13 000 94 19 22 -11.3 -16.7 28.78 33 53 126 322 -001 65 56 45 -11-12-13 000 95 19 23 -11.2 -16.6 28.78 34 53 127 323 002 65 56 47 -11-12-13 000 96 20 00 -11.0 -16.5 28.79 34 54 126 322 003 65 56 49 -11-12-13 000 97 20 01 -11.1 -16.6 28.79 35 54 126 322 -002 65 56 50 -11-12-13 000 98 20 02 -11.3 -16.8 28.79 34 54 128 325 -007 65 58 53 -11-12-13 000 99 20 03 -11.5 -16.9 28.78 34 54 129 325 -008 65 58 55 -11-12-13 000 100 20 04 -11.7 -17.1 28.79 34 54 129 326 -002 66 60 57 -12-13-13 000 101 20 05 -11.9 -17.2 28.80 34 54 129 325 000 66 60 59 -12-13-14 000 102 20 06 -12.1 -17.4 28.82 35 55 129 325 -001 66 59 61 -12-13-14 000 103 20 07 -12.3 -17.7 28.83 35 55 128 324 000 67 59 60 -12-13-14 000 104 20 08 -12.5 -17.9 28.85 35 55 127 323 001 66 58 56 -12-13-14 000 105 20 09 -12.8 -18.1 28.86 34 54 127 323 006 67 60 56 -13-13-14 000 106 20 10 -13.0 -18.2 28.87 33 53 126 322 000 68 62 58 -13-14-14 000 107 20 11 -13.3 -18.4 28.89 31 51 125 321 000 69 63 60 -13-14-14 000 108 20 12 -13.5 -18.5 28.92 30 49 125 322 001 70 63 61 -13-14-15 000 109 20 13 -13.7 -18.5 28.94 29 47 125 321 000 71 63 59 -13-14-15 000 110 20 14 -14.0 -18.6 28.96 26 45 126 322 000 73 66 62 -14-14-15 000 111 20 15 -14.1 -18.6 28.98 26 44 125 321 001 74 67 60 -14-15-15 000 112 20 16 -13.9 -18.3 28.99 25 43 127 323 004 74 69 62 -14-14-15 000 113 20 17 -13.6 -17.7 29.01 25 41 127 324 000 76 72 69 -13-14-15 000 114 20 18 -13.3 -17.3 29.01 24 40 123 319 -008 78 74 93 -13-14-14 000 115 20 19 -12.8 -16.5 29.02 24 39 121 318 -004 80 80103 -13-14-14 000 116 20 20 -12.2 -15.3 29.03 23 37 124 320 -002 84 90 97 -12-13-14 000 117 20 21 -11.8 -14.4 29.04 23 37 125 322 000 89 97 93 -12-13-14 000 118 20 22 -11.9 -14.4 29.05 22 35 126 322 002 90100 92 -12-13-14 001 119 20 23 -12.0 -14.7 29.05 21 35 127 323 001 87 93 91 -12-13-14 000 120 21 00 -11.8 -14.7 29.05 21 36 128 325 000 86 89 93 -12-13-14 000 * 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.