USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-01-12/00 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 12 00 -9.3 -10.5 28.69 13 21 154 352 000 88 70 46 -10-10-10 000 1 12 01 -10.2 -11.3 28.67 15 22 148 347 000 101 69 43 -11-10-10 000 2 12 02 -10.8 -11.3 28.68 15 22 155 353 001 108 61 40 -10 -9 -9 000 3 12 03 -11.2 -12.0 28.67 15 22 157 355 000 106 56 38 -10 -9 -9 000 4 12 04 -11.8 -13.5 28.68 15 23 159 357 000 97 52 37 -9 -9 -9 000 5 12 05 -12.5 -14.3 28.67 14 22 158 356 001 96 48 36 -9 -9 -9 000 6 12 06 -13.0 -14.6 28.67 14 23 156 355 001 98 47 36 -9 -9 -9 000 7 12 07 -13.4 -14.8 28.67 13 23 154 352 001 102 48 35 -9 -9 -9 000 8 12 08 -13.8 -14.8 28.65 13 21 152 350 001 106 47 35 -9 -9 -9 000 9 12 09 -14.2 -14.9 28.66 12 21 152 350 001 110 45 34 -9 -9 -9 000 10 12 10 -14.4 -15.0 28.67 11 21 153 351 001 110 44 33 -9 -8 -9 000 11 12 11 -14.2 -15.0 28.66 12 21 153 351 000 108 44 33 -9 -9 -9 000 12 12 12 -13.9 -14.8 28.64 12 21 152 350 001 108 43 33 -9 -9 -9 000 13 12 13 -13.6 -14.3 28.65 12 21 150 349 000 109 43 33 -9 -9 -9 000 14 12 14 -13.2 -13.9 28.65 11 21 148 346 000 108 44 34 -9 -8 -9 000 15 12 15 -12.3 -13.6 28.67 11 20 145 344 000 101 46 35 -9 -9 -9 000 16 12 16 -12.1 -13.9 28.68 11 20 141 339 001 96 46 40 -9 -8 -9 000 17 12 17 -11.8 -14.6 28.68 12 21 137 335 000 86 47 39 -9 -8 -9 000 18 12 18 -11.3 -14.2 28.67 13 21 141 339 000 84 41 38 -8 -8 -8 000 19 12 19 -10.7 -13.9 28.67 14 20 139 337 001 82 41 40 -8 -8 -8 000 20 12 20 -10.2 -14.1 28.68 14 21 136 335 000 76 40 91 -8 -7 -7 000 21 12 21 -9.7 -13.6 28.68 14 21 134 333 000 76 39100 -8 -7 -8 000 22 12 22 -9.7 -13.6 28.69 14 21 137 336 000 76 37104 -8 -7 -7 000 23 12 23 -9.2 -13.1 28.69 15 21 144 342 000 76 37103 -8 -7 -7 000 24 13 00 -9.3 -13.1 28.69 14 20 146 344 000 76 46 99 -7 -7 -7 000 25 13 01 -9.3 -12.9 28.70 14 20 147 345 000 78 56103 -7 -7 -7 000 26 13 02 -9.6 -12.9 28.70 14 20 149 347 000 80 59106 -7 -7 -6 000 27 13 03 -9.6 -12.9 28.70 14 20 150 348 000 80 75104 -7 -6 -6 000 28 13 04 -9.9 -13.2 28.69 14 20 151 349 000 81 88103 -7 -6 -6 000 29 13 05 -10.3 -13.5 28.70 13 20 154 352 000 82 86109 -7 -6 -6 000 30 13 06 -9.7 -13.2 28.71 12 18 144 343 000 79 92109 -7 -6 -7 000 31 13 07 -9.3 -12.7 28.71 11 17 144 342 001 79106111 -6 -6 -7 001 32 13 08 -9.7 -13.1 28.71 12 16 153 352 000 79 96109 -6 -6 -7 000 33 13 09 -10.0 -13.6 28.71 11 17 153 352 -001 78 99108 -6 -6 -7 000 34 13 10 -10.1 -13.2 28.71 11 16 153 351 -001 82103110 -6 -6 -7 003 35 13 11 -10.0 -12.3 28.72 10 15 146 345 -001 90106105 -7 -6 -7 014 36 13 12 -9.8 -11.6 28.72 10 14 141 339 000 94105109 -7 -7 -7 025 37 13 13 -9.4 -11.0 28.73 9 12 129 327 000 96107107 -7 -7 -8 012 38 13 14 -9.2 -10.5 28.73 8 10 124 322 000 98107103 -7 -7 -8 011 39 13 15 -8.5 -9.7 28.74 7 8 114 312 000 98107105 -7 -7 -8 007 40 13 16 -7.8 -8.8 28.74 5 6 110 309 -001 99107100 -7 -7 -9 004 41 13 17 -7.2 -8.2 28.74 5 5 99 297 000 99107 93 -7 -7 -8 002 42 13 18 -6.6 -7.2 28.74 4 5 82 280 000 102108105 -7 -8 -8 003 43 13 19 -6.2 -7.0 28.75 4 4 74 273 000 100108112 -7 -8 -8 006 44 13 20 -5.7 -6.7 28.75 3 5 83 281 000 97108110 -7 -8 -9 008 45 13 21 -5.3 -6.5 28.75 4 5 68 266 000 95108112 -7 -8 -9 006 46 13 22 -5.3 -6.4 28.76 5 6 53 252 000 95108111 -7 -8 -9 005 47 13 23 -5.2 -6.3 28.76 5 5 57 255 000 96108107 -7 -8 -9 003 48 14 00 -5.2 -6.4 28.76 4 4 53 252 000 94108104 -6 -8 -9 002 49 14 01 -4.9 -6.3 28.75 3 4 51 249 000 93108108 -6 -7 -9 002 50 14 02 -4.9 -6.3 28.75 3 3 54 252 000 93108107 -6 -7 -9 003 51 14 03 -5.1 -6.3 28.75 3 3 56 255 000 95108106 -6 -8 -9 002 52 14 04 -5.4 -6.5 28.76 2 2 56 254 000 96108108 -7 -8 -8 003 53 14 05 -5.6 -6.6 28.76 1 1 66 265 000 97102107 -7 -8 -8 002 54 14 06 -6.6 -7.2 28.75 3 3 88 286 000 102 98103 -7 -7 -8 001 55 14 07 -7.8 -8.2 28.75 4 5 93 291 000 107101107 -7 -7 -8 001 56 14 08 -8.6 -9.0 28.75 3 6 97 295 000 108101109 -7 -7 -8 001 57 14 09 -9.1 -9.5 28.76 4 6 99 298 000 108 98107 -7 -7 -8 001 58 14 10 -9.1 -9.6 28.76 4 6 89 287 000 108100110 -7 -7 -8 001 59 14 11 -8.0 -8.3 28.76 3 5 76 275 000 108102106 -7 -7 -8 003 60 14 12 -7.5 -7.7 28.76 3 6 33 231 000 106103107 -8 -7 -8 004 61 14 13 -7.3 -7.4 28.76 3 3 2 200 000 106107105 -8 -8 -9 006 62 14 14 -7.2 -7.7 28.76 2 2 1 199 000 103108107 -7 -8 -9 006 63 14 15 -6.8 -7.7 28.77 1 1 315 154 000 100108105 -8 -8 -9 006 64 14 16 -6.5 -7.5 28.77 1 3 357 195 000 98109103 -8 -9-10 005 65 14 17 -6.5 -7.0 28.76 4 5 6 205 000 102109102 -7 -9 -9 004 66 14 18 -6.6 -7.2 28.77 3 4 10 208 000 101106 97 -8 -8-10 003 67 14 19 -6.4 -7.1 28.78 4 4 10 208 000 101107 88 -8 -9-10 001 68 14 20 -6.2 -7.4 28.78 4 4 12 210 000 96109 89 -7 -9-10 000 69 14 21 -6.0 -7.4 28.78 4 4 17 216 000 94108 93 -7 -9-10 000 70 14 22 -6.0 -7.2 28.79 4 4 357 196 000 96109100 -7 -9-10 001 71 14 23 -6.5 -7.4 28.79 1 4 298 137 000 99109109 -8 -9-10 005 72 15 00 -6.5 -7.1 28.80 2 4 350 188 000 101109113 -8 -9-10 010 73 15 01 -6.6 -7.2 28.81 3 5 340 178 000 101109114 -8 -9-10 017 74 15 02 -6.7 -7.3 28.81 3 6 346 184 000 101109114 -8 -9-10 016 75 15 03 -6.8 -7.5 28.81 1 5 336 175 000 101109114 -8 -9-10 021 76 15 04 -8.2 -9.3 28.82 5 6 192 30 000 98109114 -9 -9-10 032 77 15 05 -8.5 -9.1 28.82 4 4 197 36 000 104107114 -9 -9-10 005 78 15 06 -9.1 -9.4 28.83 3 6 199 37 000 107 99 70 -9 -9-10 003 79 15 07 -9.8 -9.9 28.84 2 5 220 58 000 110104 72 -9 -9-10 000 80 15 08 -9.2 -9.3 28.85 1 6 263 102 000 109110 42 -9-10-11 000 81 15 09 -9.1 -9.2 28.86 3 7 272 110 000 109110 29 -10-10-11 000 82 15 10 -10.0 -11.4 28.87 5 8 282 121 000 98109 38 -10-11-12 000 83 15 11 -12.6 -14.1 28.89 8 8 271 110 000 100111 46 -10-11-12 000 84 15 12 -14.8 -15.0 28.90 10 12 279 117 000 115105 44 -10-11-11 000 85 15 13 -12.7 -13.0 28.91 10 11 266 104 002 113 76 41 -12-11-11 000 86 15 14 -12.2 -12.4 28.91 11 12 269 107 000 112 80 41 -13-10-11 000 87 15 15 -11.6 -11.8 28.92 10 14 256 95 002 112 98 38 -13-12-10 000 88 15 16 -10.8 -10.9 28.93 11 15 252 90 000 111114 39 -12-13-11 000 89 15 17 -10.6 -10.8 28.94 13 16 249 87 000 111113 33 -12-13-10 000 90 15 18 -10.2 -11.1 28.95 13 17 247 85 -002 104 98 36 -11-12-10 000 91 15 19 -9.9 -10.2 28.96 13 17 250 88 -005 108 97 86 -11-11 -9 000 92 15 20 -9.4 -10.0 28.98 12 17 241 79 -005 105111 85 -10-11-11 000 93 15 21 -9.2 -9.9 29.00 11 16 256 94 -007 103103 94 -10-10-11 000 94 15 22 -9.2 -11.8 29.01 12 16 259 98 -006 85 55 85 -9-10-10 000 95 15 23 -9.5 -13.4 29.03 11 17 261 99 -006 76 84 81 -9-10-10 000 96 16 00 -9.1 -10.7 29.04 10 16 262 100 -005 95 86 66 -9 -9-11 000 97 16 01 -8.6 -9.6 29.04 11 15 262 100 -005 100 80 64 -9-10-10 000 98 16 02 -8.2 -8.6 29.04 12 15 259 98 -008 106111 64 -9-11-10 000 99 16 03 -8.5 -8.6 29.05 13 18 261 99 -008 108111 39 -10-11-11 000 100 16 04 -8.0 -8.9 29.05 14 18 262 101 -006 100111 33 -9-10-12 000 101 16 05 -8.1 -9.3 29.06 15 19 256 94 -007 98110 28 -9-10-12 000 102 16 06 -7.6 -8.2 29.06 13 17 250 88 -011 103110 31 -9-10-11 000 103 16 07 -8.4 -8.5 29.07 12 16 247 85 -013 108110 35 -9-10-12 001 104 16 08 -8.8 -9.0 29.07 13 16 258 96 -011 109111 30 -10-11-10 000 105 16 09 -9.9 -10.1 29.08 13 14 256 94 -009 110 72 24 -11-10 -9 000 106 16 10 -10.1 -10.3 29.08 13 15 249 87 -007 109 85 33 -11 -9 -9 000 107 16 11 -11.2 -11.4 29.09 12 14 251 90 000 111 82 54 -9 -9 -9 000 108 16 12 -11.2 -11.4 29.10 10 13 248 86 002 111108 72 -9-10-10 000 109 16 13 -10.7 -10.9 29.10 8 13 240 78 001 110111 77 -10-11-10 000 110 16 14 -9.7 -9.8 29.11 4 10 220 59 005 109111 82 -10-11-11 000 111 16 15 -10.1 -10.2 29.12 4 8 228 66 004 110111 80 -10-11-11 000 112 16 16 -10.0 -10.4 29.12 2 6 232 70 003 107111 85 -10-11-11 000 113 16 17 -10.7 -11.2 29.12 1 5 287 126 003 110111 91 -9-11-11 000 114 16 18 -10.1 -11.0 29.13 2 5 286 124 000 104105 93 -9-10-11 000 115 16 19 -9.3 -10.7 29.13 2 5 278 116 000 97 99 92 -9-10-11 000 116 16 20 -8.7 -10.2 29.14 2 4 268 107 002 95 99 86 -9-10-11 000 117 16 21 -8.2 -10.2 29.15 3 3 256 94 000 92101 84 -9-10-11 000 118 16 22 -8.0 -9.8 29.15 3 3 252 90 000 92 97 81 -9-10-11 000 119 16 23 -7.9 -10.6 29.16 3 3 254 92 000 86 90 76 -9-10-10 000 120 17 00 -7.8 -10.8 29.16 3 3 248 87 000 83 84 67 -9-10-10 000 * 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.