USAP Grounding Zone (ACT) site lat/lon = (-84.3380,-163.5425) cell lat/lon = (-84.3284,-163.5930) Forecast initialized at 2025-12-19/12 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 19 12 -8.5 -13.1 28.92 9 13 151 348 000 58 37 30 -5 -6 -6 000 1 19 13 -9.5 -12.9 28.94 8 19 150 346 001 77 40 29 -6 -6 -6 000 2 19 14 -9.7 -12.9 28.93 8 20 151 348 002 80 39 26 -6 -6 -7 000 3 19 15 -9.6 -12.8 28.94 10 21 148 344 003 81 40 28 -7 -7 -7 000 4 19 16 -9.2 -12.9 28.96 12 24 130 327 003 76 34 29 -7 -7 -8 000 5 19 17 -9.0 -13.4 28.95 12 30 106 303 002 70 32 25 -7 -8 -9 000 6 19 18 -8.6 -13.2 28.97 9 24 92 288 006 67 25 25 -7 -8 -8 000 7 19 19 -8.5 -12.6 28.97 6 22 131 328 -008 70 36 44 -7 -9 -9 000 8 19 20 -8.1 -12.3 28.99 9 20 133 330 004 71 29 60 -7 -8 -9 000 9 19 21 -7.6 -12.8 28.99 11 24 142 338 003 64 36 34 -7 -8-10 000 10 19 22 -7.4 -12.5 29.00 7 25 132 329 -002 62 30 30 -7 -8 -9 000 11 19 23 -6.9 -12.9 28.99 4 16 134 330 004 47 32 32 -7 -8 -9 000 12 20 00 -6.8 -12.4 29.00 5 19 165 2 010 54 31 50 -6 -8 -9 000 13 20 01 -6.8 -11.5 29.01 4 15 187 23 012 63 40 51 -6 -8 -9 000 14 20 02 -7.0 -10.6 29.02 6 10 221 58 -004 74 43 42 -6 -8 -9 000 15 20 03 -7.3 -11.4 29.04 9 17 222 58 007 71 32 43 -6 -7 -9 000 16 20 04 -7.8 -11.5 29.04 10 18 216 53 -006 75 28 42 -6 -7 -8 000 17 20 05 -8.2 -11.9 29.04 8 17 219 56 -002 74 28 45 -6 -7 -8 000 18 20 06 -8.2 -12.9 29.05 8 15 211 48 -002 65 30 32 -6 -7 -9 000 19 20 07 -9.0 -13.2 29.07 7 16 224 60 -001 67 30 30 -6 -7 -9 000 20 20 08 -9.6 -13.6 29.09 1 7 192 29 004 77 30 42 -6 -7 -9 000 21 20 09 -11.2 -13.9 29.09 4 15 281 117 002 84 30 29 -6 -7 -8 000 22 20 10 -11.4 -15.1 29.10 7 15 275 112 001 74 30 32 -6 -7 -9 000 23 20 11 -12.0 -15.7 29.12 7 13 270 106 -002 75 31 33 -7 -8 -8 000 24 20 12 -14.1 -15.5 29.14 4 4 122 319 -003 102 34 38 -7 -8 -9 000 25 20 13 -12.8 -16.0 29.17 6 8 88 285 007 80 35 39 -8 -8 -9 000 26 20 14 -12.0 -16.6 29.17 4 7 73 269 -002 69 33 42 -7 -8-10 000 27 20 15 -11.8 -16.3 29.19 5 6 37 233 000 67 32 42 -7 -8 -9 000 28 20 16 -11.6 -16.0 29.21 4 5 57 253 -004 67 31 42 -7 -8 -9 000 29 20 17 -11.3 -15.4 29.22 5 9 59 255 000 67 30 42 -7 -8 -9 000 30 20 18 -10.9 -14.6 29.24 4 7 55 251 -001 74 26 41 -7 -8 -9 000 31 20 19 -10.2 -13.9 29.26 2 10 34 230 -001 71 34 37 -7 -9 -9 000 32 20 20 -9.6 -13.5 29.28 2 11 81 278 -002 70 40 36 -8 -9 -9 000 33 20 21 -9.0 -13.5 29.28 2 10 106 302 -001 68 32 36 -8 -8 -9 000 34 20 22 -8.8 -13.0 29.29 4 13 128 324 -001 73 37 36 -8 -9 -9 000 35 20 23 -8.7 -12.9 29.31 4 11 105 301 -004 74 42 35 -8 -9-10 000 36 21 00 -8.5 -12.6 29.32 3 9 94 291 001 73 44 34 -9 -9-10 000 37 21 01 -8.4 -12.2 29.33 4 7 100 297 000 75 45 34 -8 -9-10 000 38 21 02 -8.5 -11.7 29.34 5 6 112 308 000 80 45 34 -9 -9-10 000 39 21 03 -8.8 -11.5 29.33 4 5 103 300 000 84 47 35 -8 -9-10 000 40 21 04 -9.2 -11.4 29.33 4 6 101 297 000 89 50 36 -8 -9-10 000 41 21 05 -9.7 -11.8 29.33 5 6 92 288 000 91 51 37 -8 -9 -9 000 42 21 06 -10.3 -12.3 29.34 5 6 96 293 001 92 54 39 -8 -9-10 000 43 21 07 -10.8 -12.5 29.33 6 8 96 292 -001 96 56 38 -8 -9-10 000 44 21 08 -11.5 -12.7 29.34 6 8 70 267 -003 102 49 35 -8 -9-10 000 45 21 09 -12.4 -13.2 29.35 4 9 39 236 -002 108 45 35 -9 -8-10 000 46 21 10 -13.1 -13.7 29.34 4 9 71 267 -002 112 44 37 -9 -9-10 000 47 21 11 -13.5 -14.1 29.35 4 8 66 262 -001 113 44 37 -9 -9-10 000 48 21 12 -14.0 -14.7 29.35 4 8 58 255 001 114 40 35 -9 -9-10 000 49 21 13 -14.7 -14.9 29.35 3 8 58 254 -001 115 38 35 -9 -9-10 000 50 21 14 -15.4 -15.6 29.36 3 7 67 263 002 116 41 38 -9 -9-10 000 51 21 15 -15.0 -15.2 29.36 3 8 70 266 -002 115 47 38 -10 -9-10 000 52 21 16 -15.0 -15.1 29.36 2 6 104 300 000 115 46 38 -10 -9-10 000 53 21 17 -14.0 -15.1 29.36 2 3 117 314 000 104 53 36 -10-10-10 000 54 21 18 -13.1 -14.9 29.35 2 3 131 328 001 97 50 35 -10-10-11 000 55 21 19 -12.3 -14.1 29.35 3 3 90 287 -002 96 51 39 -10-10-11 000 56 21 20 -11.7 -14.0 29.35 2 2 62 258 -001 91 49 41 -10-10-10 000 57 21 21 -11.1 -13.4 29.35 2 2 82 279 000 91 51 40 -10-10-10 000 58 21 22 -10.5 -13.2 29.35 1 2 20 217 002 88 49 40 -10-10-10 000 59 21 23 -10.0 -13.2 29.35 2 3 11 207 001 83 50 40 -10-10-10 000 60 22 00 -9.7 -12.8 29.34 2 3 355 192 002 84 50 40 -10-10-10 000 61 22 01 -9.5 -12.8 29.33 2 5 341 177 001 82 50 41 -9-10-10 000 62 22 02 -9.3 -12.4 29.33 2 4 346 183 000 83 50 42 -9 -9-10 000 63 22 03 -9.3 -12.0 29.32 2 4 357 193 000 86 50 37 -9 -9-10 000 64 22 04 -9.5 -11.6 29.31 2 5 6 202 000 88 51 39 -9 -9-10 000 65 22 05 -9.9 -11.9 29.31 2 6 350 186 000 91 51 42 -9 -9-10 000 66 22 06 -10.3 -12.1 29.30 2 5 1 197 000 94 50 45 -9 -9-10 000 67 22 07 -10.9 -12.3 29.30 2 5 7 204 000 99 49 39 -9 -9-10 000 68 22 08 -11.7 -12.7 29.30 3 5 11 208 000 104 48 38 -9-10-10 000 69 22 09 -12.4 -12.8 29.30 3 5 4 201 000 111 44 40 -9 -9-10 000 70 22 10 -12.9 -13.3 29.29 2 5 13 210 000 112 45 40 -9-10-10 000 71 22 11 -13.8 -14.0 29.29 2 4 16 212 000 114 46 38 -9-10-10 000 72 22 12 -14.8 -15.0 29.29 2 5 8 204 000 115 47 41 -9-10-10 000 73 22 13 -15.0 -15.2 29.29 1 4 9 205 000 115 49 45 -9-10-10 000 74 22 14 -15.5 -15.6 29.28 1 2 67 264 000 116 50 46 -9-10-10 000 75 22 15 -15.4 -15.5 29.28 1 1 68 265 -001 116 52 44 -9-10-11 000 76 22 16 -14.7 -14.8 29.27 1 1 51 247 -001 115 52 43 -10-10-11 000 77 22 17 -13.8 -14.9 29.27 0 1 3 200 000 104 52 46 -10-10-10 000 78 22 18 -13.1 -14.8 29.27 1 2 266 103 001 99 52 49 -10-10-10 000 79 22 19 -12.4 -14.1 29.27 1 5 264 100 -001 97 46 50 -10-10 -9 000 80 22 20 -11.6 -14.2 29.26 2 4 259 96 000 89 69 56 -10-10 -9 000 81 22 21 -11.2 -13.7 29.27 2 3 169 5 -002 90 99 66 -11-11-10 000 82 22 22 -10.6 -13.5 29.27 1 6 248 85 002 87 95 78 -10-11-10 000 83 22 23 -9.9 -12.3 29.26 3 7 249 86 003 90 85 88 -10-10-10 000 84 23 00 -9.2 -10.8 29.26 5 8 248 84 002 95 66 72 -9-10 -9 000 85 23 01 -8.8 -10.3 29.25 3 8 231 68 003 96 83 66 -9-10-10 000 86 23 02 -8.5 -10.0 29.25 3 8 214 50 001 96 99 61 -9-10-10 000 87 23 03 -8.1 -9.8 29.24 3 8 246 82 -001 94106 57 -9-10-10 000 88 23 04 -7.9 -9.5 29.25 3 7 145 341 -004 95111 57 -9-10-11 000 89 23 05 -8.1 -9.7 29.24 1 7 160 356 -001 93106 55 -9-10-11 000 90 23 06 -8.5 -10.1 29.23 1 8 346 182 000 95100 47 -9-10-10 000 91 23 07 -8.8 -10.0 29.23 2 9 298 135 000 98104 47 -9 -9-10 000 92 23 08 -9.5 -10.3 29.23 3 10 273 109 000 102 99 33 -8 -9-10 000 93 23 09 -10.3 -10.9 29.23 4 9 283 120 -001 107 59 36 -8 -9 -9 000 94 23 10 -11.1 -11.6 29.23 5 9 264 100 000 110 44 41 -8 -8 -8 000 95 23 11 -12.8 -12.9 29.24 3 8 231 67 000 113 42 29 -8 -8 -8 000 96 23 12 -14.3 -14.5 29.24 3 10 205 42 -001 115 49 33 -9 -9 -8 000 97 23 13 -15.0 -15.1 29.24 2 8 182 18 -003 115 44 39 -10 -8 -8 000 98 23 14 -13.1 -13.3 29.23 6 12 148 344 000 113 37 37 -10 -8 -8 000 99 23 15 -11.4 -14.4 29.22 8 20 153 350 003 84 44 37 -8 -8 -9 000 100 23 16 -11.0 -14.3 29.22 8 21 160 357 009 81 47 31 -8 -8 -9 000 101 23 17 -9.6 -13.6 29.22 11 23 148 345 005 74 46 48 -8 -8 -9 000 102 23 18 -9.1 -12.8 29.22 10 23 145 341 004 76 49 49 -8 -8 -9 000 103 23 19 -9.0 -12.5 29.23 12 23 139 336 001 78 57 57 -9 -9-10 000 104 23 20 -8.8 -12.3 29.23 12 20 137 333 000 78 63 49 -9 -9-10 000 105 23 21 -8.9 -12.1 29.23 13 19 127 323 -001 81 59 58 -9-10-11 000 106 23 22 -8.8 -11.8 29.24 10 17 107 303 000 83 66 53 -10-10-11 000 107 23 23 -8.8 -11.3 29.25 9 13 110 307 000 87 64 52 -10-10-11 000 108 24 00 -8.7 -11.2 29.26 7 11 115 311 001 87 73 48 -10-10-11 000 109 24 01 -8.6 -11.2 29.26 6 11 108 305 002 86 64 36 -9-10-10 000 110 24 02 -8.5 -11.4 29.27 6 12 120 317 002 83 59 35 -9-10-10 000 111 24 03 -8.5 -11.2 29.27 6 11 141 337 000 84 58 35 -9-10 -9 000 112 24 04 -8.6 -10.9 29.27 6 11 155 351 002 87 58 38 -9 -9 -9 000 113 24 05 -8.9 -11.0 29.26 6 12 157 353 000 89 45 33 -9 -8 -8 000 114 24 06 -9.2 -11.3 29.26 5 12 160 357 -002 89 63 28 -8 -8 -8 000 115 24 07 -9.4 -11.4 29.26 6 18 183 20 000 90 43 58 -7 -7 -7 000 116 24 08 -9.1 -10.8 29.26 4 14 157 353 -002 93 76 53 -5 -5 -6 000 117 24 09 -6.1 -7.8 29.26 12 26 134 330 -002 91 71 62 -4 -5 -5 000 118 24 10 -6.0 -8.2 29.28 14 28 131 328 -004 86 70 61 -5 -5 -5 000 119 24 11 -6.2 -8.6 29.29 16 30 132 328 -005 85 69 56 -5 -5 -5 000 120 24 12 -6.1 -8.7 29.30 18 32 132 328 -003 83 64 56 -5 -5 -5 000 * 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.