USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2025-12-22/00 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 22 00 -7.3 -8.9 29.20 3 4 11 209 000 90 77 70 -9-10-11 000 1 22 01 -8.5 -10.0 29.20 5 6 18 216 000 96 86 69 -9-10-11 000 2 22 02 -8.6 -9.6 29.19 6 7 20 219 -001 100 90 68 -10-10-11 000 3 22 03 -8.8 -9.2 29.18 5 6 36 234 -001 106 81 67 -9-10-11 000 4 22 04 -8.8 -8.9 29.17 7 8 36 234 006 109 94 72 -10-10-11 000 5 22 05 -8.5 -9.2 29.17 7 8 46 245 001 103100 82 -10-10-11 001 6 22 06 -8.4 -9.4 29.17 8 9 51 249 000 100 97 89 -9-10-11 008 7 22 07 -8.1 -9.3 29.16 8 9 54 252 004 97 96 90 -9-10-11 009 8 22 08 -8.5 -9.2 29.13 7 8 48 246 -002 104 87 86 -9-10-11 003 9 22 09 -9.0 -9.1 29.12 6 7 61 259 000 109 85 81 -10 -9-10 000 10 22 10 -9.5 -9.7 29.12 5 6 67 265 000 109 88 74 -11-10-11 000 11 22 11 -9.8 -9.9 29.12 5 6 72 270 000 110 88 70 -11-10-11 000 12 22 12 -10.1 -10.2 29.12 4 4 84 283 -001 110 89 67 -10-10-11 000 13 22 13 -10.3 -10.4 29.11 3 3 88 286 -002 110 93 68 -10-10-11 000 14 22 14 -10.5 -10.6 29.11 3 4 83 281 000 110 92 67 -9-10-11 000 15 22 15 -10.7 -10.8 29.11 2 3 88 287 000 111 83 68 -9-10-11 000 16 22 16 -10.9 -11.0 29.10 2 5 124 322 000 111 74 70 -9-10-11 000 17 22 17 -10.5 -10.7 29.09 2 7 146 344 001 110 75 73 -9-10-11 000 18 22 18 -9.6 -10.7 29.09 3 6 149 348 000 100 73 78 -10-10-11 000 19 22 19 -8.9 -10.3 29.08 4 6 150 348 000 97 75 83 -10-11-11 000 20 22 20 -8.7 -10.2 29.08 5 7 159 357 000 95 72 88 -10-11-12 000 21 22 21 -8.6 -10.5 29.09 6 7 167 5 000 92 69 96 -10-11-12 000 22 22 22 -8.5 -10.6 29.08 6 7 170 8 000 90 67103 -10-11-12 000 23 22 23 -8.5 -10.9 29.08 6 7 175 13 000 88 79105 -10-11-12 000 24 23 00 -8.5 -10.7 29.07 6 8 176 14 000 89 95107 -10-11-12 000 25 23 01 -8.4 -10.5 29.07 6 8 181 19 000 91 95110 -10-11-12 000 26 23 02 -8.1 -9.9 29.07 6 7 187 25 000 92 89113 -9-10-12 000 27 23 03 -7.9 -10.2 29.08 6 7 171 9 000 87 83114 -9-10-12 000 28 23 04 -8.1 -10.1 29.07 6 7 186 24 001 90102109 -9-11-12 000 29 23 05 -9.1 -9.6 29.07 6 6 194 33 000 105 84109 -10-10-12 000 30 23 06 -9.0 -9.6 29.07 5 6 190 28 -001 104 87117 -10-11-12 000 31 23 07 -8.5 -9.4 29.07 6 7 215 54 -001 101111116 -10-11-12 004 32 23 08 -9.0 -9.6 29.07 9 10 193 31 -003 104111103 -10-11-12 004 33 23 09 -9.5 -9.6 29.06 6 9 189 28 000 109112104 -10-11-12 001 34 23 10 -9.8 -10.0 29.05 6 8 201 39 000 110103105 -11-11-12 001 35 23 11 -10.9 -11.2 29.05 8 8 165 4 000 111 99105 -11-11-12 001 36 23 12 -10.7 -11.2 29.06 8 9 178 16 000 108106104 -12-12-12 001 37 23 13 -10.2 -11.0 29.06 8 9 178 17 002 103113112 -11-13-12 001 38 23 14 -10.2 -10.9 29.06 8 8 170 8 001 104113110 -11-13-13 001 39 23 15 -10.7 -11.3 29.06 8 9 170 8 001 106102107 -12-12-13 000 40 23 16 -10.7 -11.1 29.06 9 10 172 10 001 108 98115 -12-12-13 000 41 23 17 -10.9 -11.3 29.06 9 10 177 15 001 109100111 -12-12-13 000 42 23 18 -10.3 -10.9 29.06 10 10 189 27 001 105106100 -11-12-14 000 43 23 19 -10.3 -11.2 29.06 10 11 200 38 -001 103114 90 -12-13-14 000 44 23 20 -10.8 -12.7 29.05 11 14 210 48 000 93 98 51 -12-12-13 000 45 23 21 -12.0 -15.4 29.05 11 14 197 36 001 82 34 44 -13-12-13 000 46 23 22 -11.9 -12.1 29.06 12 15 172 11 000 112 57 45 -13-13-12 000 47 23 23 -11.3 -11.4 29.06 13 16 177 16 -002 111115 44 -13-14-13 000 48 24 00 -11.2 -11.7 29.07 13 14 176 15 -002 108115 48 -13-14-14 000 49 24 01 -12.0 -13.4 29.07 12 15 178 16 -005 101101 54 -13-14-14 000 50 24 02 -12.4 -14.1 29.06 12 14 186 25 -005 97 96 62 -14-15-14 000 51 24 03 -12.9 -14.9 29.06 11 14 193 31 -005 95 56 65 -14-14-14 000 52 24 04 -13.3 -15.1 29.05 11 15 198 36 -005 98 61 46 -14-14-14 000 53 24 05 -13.8 -15.3 29.04 12 16 205 43 -006 101 60 62 -15-15-14 000 54 24 06 -14.3 -15.4 29.03 13 16 208 46 -009 106 68 86 -15-15-14 000 55 24 07 -14.6 -15.0 29.02 11 14 206 44 -011 114 83 77 -16-15-15 000 56 24 08 -14.8 -15.0 29.02 12 14 201 39 -004 115 90 64 -16-15-15 000 57 24 09 -14.8 -15.1 29.02 10 11 188 26 006 115106 66 -16-16-16 000 58 24 10 -15.0 -15.3 29.01 9 11 179 18 -001 115 93 81 -16-15-16 000 59 24 11 -15.7 -16.1 29.01 9 12 170 8 000 115 70 78 -16-15-16 000 60 24 12 -16.4 -16.8 29.00 9 14 168 6 000 117 76 80 -14-15-16 000 61 24 13 -16.7 -17.1 29.00 9 14 163 2 000 117 47 73 -14-15-16 000 62 24 14 -16.9 -17.3 29.00 8 14 163 1 000 117 58 73 -14-15-15 000 63 24 15 -16.8 -17.9 29.00 8 16 162 0 000 108 61 66 -14-14-15 000 64 24 16 -16.0 -19.1 29.00 9 16 162 0 001 87 59 62 -14-14-15 000 65 24 17 -15.3 -18.7 29.00 9 17 165 4 001 85 53 55 -14-14-14 000 66 24 18 -14.7 -18.0 29.00 10 17 169 7 001 84 50 51 -13-13-14 000 67 24 19 -14.1 -17.8 29.00 11 17 170 8 000 81 45 47 -13-13-13 000 68 24 20 -13.5 -17.7 29.01 11 17 167 5 000 76 51 43 -13-13-13 000 69 24 21 -13.1 -16.9 29.01 11 16 164 2 001 78 47 43 -13-13-12 000 70 24 22 -12.9 -15.9 29.01 11 15 161 359 001 86 42 34 -12-12-12 000 71 24 23 -12.7 -15.3 29.02 11 15 155 354 002 90 39 31 -12-12-12 000 72 25 00 -12.4 -14.9 29.02 11 15 150 348 001 90 39 30 -12-12-12 000 73 25 01 -12.4 -14.8 29.03 10 15 146 344 002 91 32 36 -12-11-11 000 74 25 02 -12.3 -15.1 29.03 11 16 147 345 000 88 33 29 -11-10-11 000 75 25 03 -12.3 -15.3 29.03 11 16 150 349 000 85 34 40 -10-10-11 000 76 25 04 -12.4 -15.8 29.03 11 17 149 347 001 81 28 67 -10-10-10 000 77 25 05 -12.4 -16.4 29.03 10 19 143 341 003 76 26 66 -10 -9-10 000 78 25 06 -12.9 -16.6 29.03 11 20 144 342 000 78 32 60 -9 -9 -9 000 79 25 07 -13.2 -17.0 29.04 11 21 140 339 000 78 41 60 -9 -8 -9 000 80 25 08 -13.4 -16.9 29.04 11 20 139 337 000 81 39 62 -8 -8 -9 000 81 25 09 -13.4 -17.6 29.05 11 20 135 333 001 74 37 59 -8 -8 -9 000 82 25 10 -13.4 -18.2 29.05 11 20 133 331 000 69 27 54 -7 -7 -8 000 83 25 11 -13.4 -18.3 29.06 11 20 136 334 000 68 33 51 -7 -7 -8 000 84 25 12 -13.1 -18.6 29.06 11 19 137 335 000 63 37 49 -7 -7 -8 000 85 25 13 -12.9 -18.1 29.06 10 18 137 335 000 65 37 49 -6 -7 -8 000 86 25 14 -12.7 -18.8 29.06 10 17 140 339 000 57 37 47 -6 -7 -8 000 87 25 15 -12.2 -19.1 29.06 9 15 143 341 000 51 36 47 -6 -7 -8 000 88 25 16 -11.6 -18.4 29.06 9 14 147 346 000 51 36 47 -6 -7 -8 000 89 25 17 -10.9 -17.3 29.07 8 14 155 353 000 53 37 47 -6 -6 -8 000 90 25 18 -10.3 -16.5 29.07 8 13 162 0 -001 57 38 45 -6 -6 -7 000 91 25 19 -9.7 -15.3 29.07 8 13 166 4 000 61 38 42 -5 -6 -7 000 92 25 20 -9.0 -14.0 29.08 7 12 171 10 000 66 37 40 -5 -6 -7 000 93 25 21 -8.4 -13.8 29.08 8 12 172 11 000 64 34 40 -5 -6 -7 000 94 25 22 -8.2 -13.3 29.08 8 12 175 13 001 66 31 37 -5 -6 -7 000 95 25 23 -7.9 -13.0 29.08 8 11 177 16 000 66 27 34 -5 -5 -7 000 96 26 00 -7.7 -13.0 29.08 8 11 180 18 000 65 23 32 -5 -5 -7 000 97 26 01 -7.6 -13.0 29.08 7 11 184 22 000 63 23 32 -5 -5 -6 000 98 26 02 -7.6 -12.6 29.08 7 11 189 28 000 65 25 31 -5 -5 -6 000 99 26 03 -8.0 -12.1 29.08 7 9 194 33 000 72 25 31 -5 -5 -6 000 100 26 04 -8.5 -12.2 29.08 7 9 201 40 000 75 23 31 -5 -5 -6 000 101 26 05 -9.4 -12.8 29.07 7 9 200 38 000 78 23 28 -5 -5 -6 000 102 26 06 -10.3 -13.8 29.08 7 10 194 32 000 76 22 29 -5 -5 -6 000 103 26 07 -10.8 -13.7 29.08 7 11 184 23 001 83 25 31 -5 -5 -6 000 104 26 08 -11.3 -13.2 29.08 7 12 179 17 002 93 31 32 -5 -5 -6 000 105 26 09 -11.9 -13.2 29.08 7 12 172 10 -001 100 36 27 -6 -6 -6 000 106 26 10 -12.3 -13.3 29.08 7 12 167 6 -002 104 37 39 -6 -6 -7 000 107 26 11 -12.9 -13.9 29.08 7 13 163 1 000 105 35 38 -6 -6 -7 000 108 26 12 -12.8 -14.1 29.08 8 14 158 356 000 101 35 36 -6 -6 -7 000 109 26 13 -11.9 -14.3 29.07 8 13 157 355 000 88 35 34 -6 -6 -7 000 110 26 14 -11.4 -14.4 29.07 8 12 159 357 000 81 34 34 -6 -6 -7 000 111 26 15 -11.1 -13.9 29.07 8 12 163 2 000 83 34 33 -6 -6 -7 000 112 26 16 -10.7 -13.4 29.06 7 12 168 6 000 85 34 33 -6 -6 -7 000 113 26 17 -10.4 -13.0 29.06 7 12 171 9 000 85 34 32 -6 -6 -7 000 114 26 18 -9.9 -12.7 29.06 6 12 174 12 000 84 35 32 -5 -6 -7 000 115 26 19 -9.4 -12.3 29.06 6 11 173 11 000 83 37 31 -5 -6 -7 000 116 26 20 -8.7 -11.9 29.07 6 11 166 5 000 81 39 31 -6 -6 -7 000 117 26 21 -8.2 -11.5 29.07 6 11 160 359 000 80 38 31 -6 -6 -7 000 118 26 22 -8.0 -10.9 29.07 6 9 163 2 000 84 36 32 -6 -6 -6 000 119 26 23 -7.9 -10.0 29.07 6 8 168 6 000 90 34 33 -6 -6 -6 000 120 27 00 -7.8 -9.6 29.07 6 7 168 6 000 92 34 35 -6 -6 -6 000 * 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.