USAP Black Island site lat/lon = (-78.1274,166.1499) cell lat/lon = (-78.1146,166.1538) Forecast initialized at 2025-12-21/00 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 21 00 -4.8 -8.8 29.22 5 5 132 298 000 71 79 79 -6 -7 -8 000 1 21 01 -4.5 -9.5 29.24 4 5 122 288 -001 72 85 84 -6 -7 -8 000 2 21 02 -4.5 -9.2 29.26 2 2 328 135 -002 73 89 83 -6 -7 -8 000 3 21 03 -3.8 -15.2 29.24 7 8 191 357 000 43 54 78 -5 -6 -8 000 4 21 04 -3.8 -18.9 29.25 9 9 176 342 002 31 46 75 -5 -6 -7 000 5 21 05 -4.1 -20.6 29.26 11 13 177 343 000 27 32 67 -5 -6 -7 000 6 21 06 -4.7 -24.3 29.27 16 21 171 337 000 21 23 52 -5 -6 -7 000 7 21 07 -5.1 -20.6 29.29 17 24 172 338 000 30 26 41 -6 -6 -7 000 8 21 08 -5.5 -20.3 29.29 19 23 169 335 000 31 37 37 -6 -6 -7 000 9 21 09 -6.0 -19.8 29.29 17 22 172 338 000 33 31 38 -6 -6 -7 000 10 21 10 -6.4 -19.2 29.31 18 22 174 340 000 37 45 37 -6 -6 -7 000 11 21 11 -6.7 -18.3 29.33 17 22 173 339 000 40 41 36 -6 -6 -7 000 12 21 12 -6.9 -18.1 29.32 15 22 168 334 000 41 57 47 -6 -7 -8 000 13 21 13 -8.2 -17.7 29.33 9 16 144 311 000 46 46 65 -6 -7 -8 000 14 21 14 -10.5 -13.6 29.35 2 2 92 258 000 83 55 53 -8 -8 -9 000 15 21 15 -9.9 -14.2 29.37 2 6 225 31 000 73 61 52 -7 -8 -9 000 16 21 16 -9.8 -16.7 29.37 5 11 160 326 000 56 65 60 -7 -8 -9 000 17 21 17 -12.3 -14.3 29.37 2 4 35 201 000 92 66 68 -8 -9 -9 000 18 21 18 -10.4 -14.8 29.37 1 3 13 180 -001 75 70 64 -8 -9 -9 000 19 21 19 -10.6 -14.2 29.38 1 1 43 209 000 82 61 64 -8 -9 -9 000 20 21 20 -9.6 -14.7 29.39 0 2 127 293 -001 73 58 67 -8 -9 -9 000 21 21 21 -8.6 -15.2 29.40 0 10 114 280 000 64 49 58 -8 -9 -9 000 22 21 22 -7.7 -15.4 29.40 2 9 172 338 001 58 52 54 -8 -9 -9 000 23 21 23 -7.1 -15.1 29.39 2 3 138 304 000 57 48 61 -8 -8 -9 000 24 22 00 -7.2 -13.3 29.39 2 2 29 195 000 67 47 62 -8 -8 -9 000 25 22 01 -7.0 -11.3 29.40 2 2 30 196 000 77 51 62 -8 -8 -9 000 26 22 02 -6.7 -10.6 29.39 2 2 32 199 003 80 52 61 -8 -8 -9 000 27 22 03 -6.5 -10.2 29.39 3 3 37 203 000 80 49 60 -8 -8 -9 000 28 22 04 -6.5 -10.1 29.39 3 3 29 195 002 81 45 56 -8 -8 -8 000 29 22 05 -6.5 -10.9 29.38 3 3 33 199 000 76 43 52 -7 -7 -8 000 30 22 06 -6.6 -11.1 29.38 2 3 50 217 000 75 47 50 -7 -7 -8 000 31 22 07 -7.1 -10.1 29.38 2 4 57 223 -001 83 41 57 -7 -7 -8 000 32 22 08 -7.5 -10.4 29.37 2 4 38 204 003 84 43 51 -6 -7 -7 000 33 22 09 -8.0 -11.2 29.37 2 4 88 254 000 81 39 43 -6 -6 -7 000 34 22 10 -8.3 -13.0 29.36 2 4 65 231 002 70 37 51 -5 -6 -7 000 35 22 11 -9.0 -14.4 29.36 1 3 151 317 -005 66 37 53 -6 -6 -7 000 36 22 12 -10.9 -14.3 29.36 0 4 353 159 -006 80 37 44 -5 -5 -5 000 37 22 13 -9.4 -15.3 29.36 7 7 177 343 003 55 39 52 -5 -6 -7 000 38 22 14 -9.2 -17.3 29.35 7 7 122 288 017 45 34 38 -5 -5 -7 000 39 22 15 -9.1 -17.3 29.35 6 6 109 275 025 46 35 32 -4 -5 -6 000 40 22 16 -7.5 -15.4 29.34 1 4 90 257 018 52 26 34 -3 -4 -5 000 41 22 17 -10.0 -16.7 29.35 5 5 104 270 024 56 34 27 -5 -6 -4 000 42 22 18 -9.6 -16.8 29.35 2 14 103 269 032 58 30 31 -4 -5 -6 000 43 22 19 -9.1 -16.9 29.35 1 3 136 302 025 56 42 35 -5 -6 -7 000 44 22 20 -8.1 -16.3 29.35 3 5 79 245 013 53 36 33 -4 -5 -6 000 45 22 21 -6.4 -15.7 29.35 3 5 84 250 022 50 41 38 -4 -5 -6 000 46 22 22 -5.0 -12.4 29.35 5 11 298 104 000 59 48 34 -4 -5 -6 000 47 22 23 -3.3 -11.1 29.36 5 11 258 64 005 56 41 27 -4 -5 -6 000 48 23 00 -3.0 -10.7 29.37 4 9 288 94 006 57 44 27 -3 -5 -5 000 49 23 01 -2.8 -10.0 29.37 3 6 265 71 005 59 28 28 -3 -4 -5 000 50 23 02 -2.2 -12.1 29.37 4 8 264 71 009 47 38 28 -3 -4 -5 000 51 23 03 -2.1 -11.5 29.37 2 8 284 90 003 50 54 29 -3 -4 -5 000 52 23 04 -2.1 -11.6 29.37 1 8 337 143 012 49 55 27 -3 -4 -5 000 53 23 05 -2.3 -9.5 29.38 3 7 28 195 010 59 48 28 -3 -4 -5 000 54 23 06 -3.0 -6.9 29.37 4 7 34 200 002 75 56 26 -3 -4 -5 000 55 23 07 -4.3 -6.5 29.37 4 7 35 201 001 85 58 24 -3 -4 -5 000 56 23 08 -5.4 -6.5 29.38 4 6 95 262 014 89 61 26 -3 -4 -4 000 57 23 09 -5.7 -8.4 29.38 5 5 113 279 011 76 69 28 -3 -4 -4 000 58 23 10 -5.6 -8.5 29.38 5 5 119 285 013 75 54 37 -3 -4 -3 000 59 23 11 -5.3 -7.7 29.39 4 5 114 280 019 81 40 39 -3 -3 -3 000 60 23 12 -6.0 -6.8 29.39 4 5 109 275 009 90 43 37 -3 -2 -3 000 61 23 13 -8.3 -8.3 29.39 1 11 319 125 032 107 35 36 -2 -2 -3 000 62 23 14 -6.7 -13.3 29.38 8 43 224 30 073 51 26 36 -1 -2 -3 000 63 23 15 -2.3 -16.1 29.39 28 48 204 10 068 33 26 31 -2 -2 -3 000 64 23 16 -3.4 -14.3 29.39 24 41 188 354 044 42 31 30 -2 -2 -3 000 65 23 17 -3.8 -13.6 29.40 14 33 212 19 029 46 35 24 -3 -3 -4 000 66 23 18 -2.9 -14.5 29.41 21 40 201 7 032 40 30 28 -2 -3 -4 000 67 23 19 -2.9 -14.3 29.41 27 44 190 357 041 41 25 26 -2 -3 -4 000 68 23 20 -3.3 -12.5 29.43 18 37 203 9 026 50 31 31 -3 -3 -4 000 69 23 21 -2.3 -13.8 29.44 24 42 195 1 050 41 29 26 -2 -3 -4 000 70 23 22 -2.3 -13.9 29.44 30 47 192 358 101 41 32 33 -3 -3 -4 000 71 23 23 -2.1 -13.8 29.44 34 50 194 0 116 41 35 25 -3 -4 -5 000 72 24 00 -2.0 -13.0 29.45 33 48 200 6 056 44 39 21 -3 -4 -5 000 73 24 01 -2.0 -12.8 29.45 35 51 197 3 033 44 35 20 -3 -4 -5 000 74 24 02 -2.0 -12.2 29.46 33 46 198 5 066 46 40 22 -3 -4 -5 000 75 24 03 -1.7 -12.3 29.47 32 46 198 4 -003 45 42 23 -3 -4 -5 000 76 24 04 -1.7 -13.0 29.47 33 49 195 1 035 42 38 21 -3 -4 -5 000 77 24 05 -1.6 -12.4 29.48 33 47 192 358 046 44 40 24 -2 -4 -5 000 78 24 06 -1.6 -12.7 29.49 27 43 202 9 046 42 42 28 -2 -3 -5 000 79 24 07 -1.7 -12.7 29.50 32 46 211 18 115 43 44 31 -2 -4 -5 000 80 24 08 -2.3 -11.4 29.52 21 39 213 19 179 50 56 33 -3 -4 -5 000 81 24 09 -3.4 -10.9 29.53 16 37 213 19 116 56 57 34 -3 -4 -5 000 82 24 10 -4.1 -10.2 29.54 20 37 186 353 090 63 55 28 -3 -4 -5 000 83 24 11 -4.4 -10.9 29.55 17 37 186 352 064 60 51 31 -3 -4 -5 000 84 24 12 -4.3 -11.4 29.56 21 39 181 347 036 58 48 35 -3 -4 -5 000 85 24 13 -3.8 -12.3 29.56 28 44 185 351 092 51 46 20 -3 -4 -5 000 86 24 14 -3.4 -13.6 29.55 28 45 181 347 046 45 34 22 -2 -3 -4 000 87 24 15 -3.2 -13.9 29.54 29 47 183 349 031 44 31 19 -2 -3 -4 000 88 24 16 -3.0 -14.3 29.54 32 48 184 350 080 41 28 23 -2 -3 -4 000 89 24 17 -2.7 -14.3 29.54 30 49 185 351 051 41 30 25 -2 -3 -4 000 90 24 18 -2.1 -14.4 29.54 33 52 184 350 112 38 31 22 -2 -3 -4 000 91 24 19 -1.9 -13.8 29.53 32 50 186 352 135 40 30 23 -2 -3 -4 000 92 24 20 -1.4 -14.4 29.51 35 50 181 347 104 36 25 14 -1 -2 -4 000 93 24 21 -0.7 -15.7 29.50 36 51 176 342 -082 31 24 11 -1 -2 -3 000 94 24 22 0.3 -17.6 29.51 26 42 178 344 -262 24 22 12 0 -1 -2 000 95 24 23 0.3 -15.1 29.53 10 30 198 4 -075 29 23 22 0 -1 -2 000 96 25 00 1.0 -17.9 29.51 19 29 176 342 -005 22 21 17 0 0 -1 000 97 25 01 1.2 -17.8 29.49 23 27 176 343 014 22 17 20 1 0 0 000 98 25 02 0.8 -15.0 29.48 2 14 69 236 -074 29 24 27 0 0 -1 000 99 25 03 -0.4 -4.8 29.46 5 5 9 176 -026 73 32 25 0 0 -1 000 100 25 04 -0.6 -6.1 29.44 5 7 343 150 024 67 43 27 -1 -1 -1 000 101 25 05 -0.2 -7.1 29.42 5 7 322 129 -014 59 39 32 0 -1 -1 000 102 25 06 -0.3 -6.7 29.41 6 9 306 112 000 62 32 43 0 -1 -2 000 103 25 07 -0.5 -8.3 29.40 3 7 271 77 001 56 31 50 0 -1 -2 000 104 25 08 0.1 -12.0 29.39 7 26 313 119 -017 38 44 42 0 -1 -3 000 105 25 09 -0.8 -11.3 29.40 7 25 318 124 008 44 43 33 0 -2 -3 000 106 25 10 -1.5 -12.8 29.41 5 17 225 31 -003 38 29 31 -1 -1 -2 000 107 25 11 -1.4 -15.3 29.41 5 17 137 304 -021 30 26 44 0 -1 -2 000 108 25 12 -6.3 -10.7 29.41 6 17 89 255 -021 68 39 47 0 -1 -2 000 109 25 13 -3.2 -14.7 29.41 9 14 146 312 -027 34 36 52 0 -1 -2 000 110 25 14 -3.5 -14.4 29.40 10 12 122 288 -026 39 43 57 0 -1 -2 000 111 25 15 -3.5 -12.0 29.40 8 9 153 319 -051 45 44 50 -1 -2 -3 000 112 25 16 -3.9 -11.2 29.40 5 11 174 341 -026 52 51 54 -1 -2 -3 000 113 25 17 -4.3 -10.9 29.39 4 10 135 301 -003 57 44 48 -1 -2 -3 000 114 25 18 -4.5 -11.4 29.40 2 3 197 3 -014 59 51 53 -1 -2 -3 000 115 25 19 -4.8 -10.7 29.40 1 3 126 292 005 65 47 47 -1 -2 -3 000 116 25 20 -3.7 -11.1 29.40 1 2 163 329 -007 58 45 49 -1 -2 -3 000 117 25 21 -2.6 -11.6 29.40 3 4 179 345 -006 51 37 43 0 -1 -3 000 118 25 22 -2.6 -12.0 29.40 3 4 203 9 -001 50 33 39 -1 -1 -2 000 119 25 23 -1.7 -12.7 29.39 0 4 172 339 000 43 33 38 -2 -1 -2 000 120 26 00 -1.3 -12.9 29.39 1 4 170 336 -010 41 36 38 -2 -1 -2 000 * 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.