USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) 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 -16.0 -18.2 28.79 13 23 254 93 000 68 53 52 -13-13-13 000 1 19 13 -17.5 -17.9 28.80 14 22 246 84 000 118 62 58 -14-14-14 000 2 19 14 -17.5 -18.1 28.80 15 22 248 86 000 116 61 53 -14-14-13 000 3 19 15 -17.4 -18.1 28.80 15 22 247 85 -003 114 60 45 -14-13-13 000 4 19 16 -17.2 -17.9 28.80 15 22 246 84 -008 113 59 39 -14-13-13 000 5 19 17 -17.0 -17.8 28.81 15 22 245 83 -011 112 59 35 -14-13-13 000 6 19 18 -16.4 -17.6 28.83 15 21 243 81 -012 107 58 35 -13-13-12 000 7 19 19 -15.7 -17.3 28.83 14 21 242 81 -012 101 58 37 -13-12-12 000 8 19 20 -14.8 -16.9 28.85 14 20 244 82 -011 96 57 37 -13-12-12 000 9 19 21 -14.1 -16.5 28.85 14 20 245 83 -009 92 57 31 -12-12-12 000 10 19 22 -13.6 -16.2 28.87 14 20 246 84 -008 90 57 34 -12-11-11 000 11 19 23 -13.3 -16.0 28.88 14 20 247 86 -006 89 57 38 -12-11-11 000 12 20 00 -13.1 -15.9 28.90 15 20 248 86 -004 88 60 34 -12-11-11 000 13 20 01 -13.2 -15.8 28.92 15 21 248 86 -003 89 60 36 -11-11-11 000 14 20 02 -13.3 -15.8 28.94 15 21 251 89 -002 91 55 42 -11-10-11 000 15 20 03 -13.4 -15.7 28.97 15 20 251 89 -003 93 48 45 -11-10-11 000 16 20 04 -13.7 -15.8 28.99 14 19 252 90 -007 95 45 44 -11-10-11 000 17 20 05 -14.0 -15.9 29.00 13 18 253 92 -008 97 48 41 -11-10-10 000 18 20 06 -14.3 -15.9 29.02 13 18 255 94 -008 100 52 32 -10-10-10 000 19 20 07 -14.7 -15.9 29.04 12 17 260 98 -011 104 51 36 -10 -9-10 000 20 20 08 -14.9 -16.1 29.06 12 17 262 100 -009 105 50 35 -10 -9-10 000 21 20 09 -15.3 -16.8 29.08 11 16 263 101 -002 102 46 33 -9 -9-10 000 22 20 10 -15.2 -17.6 29.10 10 16 263 101 000 93 41 35 -9 -9-10 000 23 20 11 -15.1 -18.4 29.12 10 16 262 100 002 82 35 42 -9 -9-10 000 24 20 12 -14.9 -19.4 29.12 10 16 261 99 001 72 31 37 -9 -9-10 000 25 20 13 -14.8 -20.0 29.14 11 16 261 100 000 66 30 37 -9 -9-10 000 26 20 14 -14.5 -19.5 29.16 10 15 260 98 000 67 29 41 -9-10-10 000 27 20 15 -14.1 -19.5 29.18 10 14 260 98 -001 63 28 41 -9-10-10 000 28 20 16 -13.5 -19.9 29.19 9 13 258 97 000 54 29 44 -9-10-10 000 29 20 17 -12.7 -19.5 29.19 9 13 260 99 000 52 26 44 -9-10-10 000 30 20 18 -11.9 -18.6 29.21 8 12 262 100 001 52 30 36 -9-10-11 000 31 20 19 -10.8 -16.5 29.22 6 10 267 105 004 59 73 35 -9-10-11 000 32 20 20 -9.6 -12.4 29.23 4 8 272 110 001 85 72 35 -9-10-11 000 33 20 21 -8.7 -10.5 29.24 3 6 287 125 000 93 69 75 -9-10-11 000 34 20 22 -8.1 -9.7 29.24 4 6 295 134 000 94 73 90 -9-10-11 000 35 20 23 -7.6 -9.7 29.24 5 6 312 151 -001 89 74 93 -9-10-11 000 36 21 00 -7.1 -10.2 29.25 5 6 328 166 -002 81 92 96 -8-10-11 000 37 21 01 -7.1 -10.2 29.25 6 6 343 182 001 81 95 95 -8-10-11 000 38 21 02 -7.1 -9.9 29.25 7 7 359 198 000 83 92 94 -8-10-11 000 39 21 03 -8.0 -9.1 29.25 6 8 9 207 000 98 76 88 -9-10-11 000 40 21 04 -8.5 -9.3 29.24 7 11 6 205 000 102 78 84 -9-10-11 000 41 21 05 -8.7 -8.8 29.24 8 11 4 203 000 109 78 83 -10-10-11 000 42 21 06 -8.8 -9.3 29.23 7 10 12 211 000 105 95 89 -9-10-11 000 43 21 07 -9.9 -10.2 29.23 5 9 25 224 000 110 92 90 -9-10-11 000 44 21 08 -9.5 -9.7 29.23 7 8 19 218 000 109 91 89 -9-10-11 000 45 21 09 -9.8 -10.0 29.23 6 8 24 222 000 110 95 86 -9-10-11 000 46 21 10 -10.3 -10.5 29.22 5 7 26 224 000 110 87 87 -9-10-11 000 47 21 11 -10.3 -10.4 29.23 5 7 28 226 000 110 90 86 -9-10-11 000 48 21 12 -10.8 -10.9 29.22 4 5 37 235 001 111 90 77 -9-10-11 000 49 21 13 -11.5 -11.6 29.22 4 5 19 217 000 111 91 73 -9-10-11 000 50 21 14 -11.8 -11.9 29.22 4 4 3 202 000 112 87 89 -9-10-11 000 51 21 15 -11.8 -12.0 29.22 3 4 357 196 000 112 91 94 -9-10-11 000 52 21 16 -12.1 -12.2 29.22 2 2 4 202 000 112 78 92 -9-10-11 000 53 21 17 -11.3 -12.0 29.21 1 6 64 262 001 108 79 94 -9-10-11 000 54 21 18 -9.9 -11.2 29.20 3 6 110 309 000 98 78 99 -9-10-11 000 55 21 19 -9.0 -10.6 29.20 3 6 104 302 000 96 74101 -9-10-12 000 56 21 20 -8.4 -10.7 29.20 4 5 95 293 000 89 73100 -9-10-12 000 57 21 21 -8.2 -10.8 29.20 4 5 98 296 000 86 74101 -9-10-12 000 58 21 22 -8.1 -11.1 29.20 3 5 105 304 000 83 78 98 -9-10-12 000 59 21 23 -8.0 -11.2 29.20 3 5 125 324 000 82 80 97 -9-10-12 000 60 22 00 -7.9 -11.1 29.19 4 5 148 347 000 81 83 99 -9-10-12 000 61 22 01 -7.9 -11.2 29.18 5 6 156 354 000 81 69 99 -9-10-11 000 62 22 02 -8.1 -10.9 29.18 6 8 161 359 001 84 68 93 -9-10-11 000 63 22 03 -8.3 -10.5 29.17 6 10 163 1 000 89 72 91 -9-10-11 000 64 22 04 -8.9 -11.6 29.17 6 10 164 3 000 84 72 99 -9-10-12 000 65 22 05 -9.8 -14.1 29.16 5 11 169 7 000 69 75 94 -9-10-12 000 66 22 06 -10.9 -15.2 29.16 6 11 167 5 000 67 84 96 -9-11-12 000 67 22 07 -11.8 -16.0 29.16 6 11 165 3 000 69 83 99 -9-11-12 000 68 22 08 -12.6 -15.4 29.16 6 11 159 357 000 84 88 99 -10-11-12 000 69 22 09 -13.1 -15.7 29.16 6 10 148 346 000 86 90 99 -10-11-12 000 70 22 10 -13.3 -16.8 29.15 5 9 141 340 000 78 92 96 -10-11-12 000 71 22 11 -12.8 -15.7 29.15 4 8 146 344 000 86 94 97 -10-11-12 000 72 22 12 -12.5 -15.1 29.15 3 7 175 13 -001 89 97 99 -10-11-12 000 73 22 13 -12.3 -15.0 29.15 3 7 194 32 000 88 97103 -10-11-12 000 74 22 14 -12.3 -14.6 29.14 4 8 205 43 -001 92100106 -10-11-12 000 75 22 15 -12.0 -13.9 29.14 3 9 209 47 001 94 94 94 -10-11-13 000 76 22 16 -10.9 -12.8 29.14 3 8 229 67 -001 94102 96 -10-11-13 000 77 22 17 -10.4 -12.3 29.14 5 8 256 94 -002 93 99107 -10-12-13 000 78 22 18 -9.4 -11.9 29.13 3 9 203 41 -001 88 97114 -10-11-13 000 79 22 19 -9.0 -11.7 29.13 4 9 232 71 000 87101117 -10-11-13 000 80 22 20 -8.8 -10.8 29.13 5 7 242 80 000 91110114 -10-11-13 000 81 22 21 -8.4 -10.3 29.13 5 7 259 97 -001 92108117 -10-11-13 006 82 22 22 -8.2 -9.6 29.13 8 9 236 74 -001 96111116 -9-11-12 024 83 22 23 -8.3 -9.3 29.12 9 10 233 72 -001 100111114 -10-11-12 006 84 23 00 -8.2 -9.8 29.13 9 10 226 65 000 93111111 -9-11-12 002 85 23 01 -8.1 -10.1 29.12 8 9 220 59 -001 91105109 -9-11-12 002 86 23 02 -8.0 -9.8 29.12 6 8 215 53 -002 92105105 -9-11-12 007 87 23 03 -7.8 -9.8 29.11 6 6 219 58 000 90103106 -9-10-12 006 88 23 04 -7.9 -9.6 29.11 8 9 218 56 001 93106105 -9-10-12 002 89 23 05 -8.8 -9.5 29.10 11 12 237 75 002 103111114 -10-11-12 025 90 23 06 -9.0 -9.4 29.10 9 10 226 65 000 106112103 -10-11-12 013 91 23 07 -9.3 -10.0 29.10 7 8 229 67 003 103112113 -10-12-12 000 92 23 08 -9.4 -10.2 29.10 5 7 230 68 003 103112 96 -10-12-13 001 93 23 09 -9.4 -10.3 29.10 5 7 245 83 006 102112 93 -10-12-13 000 94 23 10 -9.5 -9.9 29.10 5 7 227 65 005 106112 96 -10-12-13 000 95 23 11 -9.4 -10.6 29.09 5 6 172 10 001 99108 88 -10-12-13 000 96 23 12 -11.6 -12.2 29.09 5 6 83 282 001 109100 91 -11-12-13 000 97 23 13 -11.5 -12.1 29.08 2 5 85 283 001 108107 66 -11-12-14 000 98 23 14 -13.3 -13.9 29.07 3 6 119 317 000 113 97 47 -11-12-13 000 99 23 15 -13.4 -17.7 29.07 4 6 124 322 001 71 40 49 -11-12-13 000 100 23 16 -13.6 -18.8 29.07 5 6 127 325 000 61 47 48 -11-12-13 000 101 23 17 -13.4 -18.4 29.07 5 7 129 327 000 61 47 49 -12-12-13 000 102 23 18 -12.8 -17.5 29.06 4 7 132 331 000 67 44 60 -12-12-13 000 103 23 19 -12.2 -16.9 29.06 4 8 134 333 000 71 50 60 -12-12-13 000 104 23 20 -11.8 -16.3 29.06 6 9 136 334 001 73 50 64 -12-12-13 000 105 23 21 -11.7 -16.4 29.06 6 9 143 341 000 72 52 55 -12-13-14 000 106 23 22 -11.7 -16.1 29.07 7 12 153 351 000 74 63 53 -12-13-14 000 107 23 23 -11.8 -16.2 29.06 9 14 163 2 000 74 73 57 -13-13-14 000 108 24 00 -11.9 -16.0 29.06 10 15 166 5 000 76 74 58 -13-13-14 000 109 24 01 -12.0 -15.8 29.06 11 16 168 6 000 79 57 56 -13-13-14 000 110 24 02 -12.3 -15.4 29.06 11 15 172 10 000 85 42 49 -13-13-14 000 111 24 03 -12.7 -14.7 29.06 11 15 175 13 -001 95 40 55 -13-13-13 000 112 24 04 -13.0 -14.8 29.05 11 15 182 20 -001 98 41 57 -13-12-13 000 113 24 05 -13.4 -15.1 29.05 11 15 188 26 -001 99 53 61 -13-12-13 000 114 24 06 -13.8 -14.3 29.05 12 17 193 31 -001 112 66 60 -13-12-13 000 115 24 07 -13.3 -13.6 29.05 13 20 193 32 000 113109 52 -14-13-13 000 116 24 08 -13.3 -13.5 29.04 14 19 193 31 -001 113105 48 -14-13-13 000 117 24 09 -13.3 -13.5 29.04 13 17 186 24 -001 113 74 50 -14-12-12 000 118 24 10 -13.8 -14.0 29.05 13 17 182 21 -001 114 69 49 -15-12-12 000 119 24 11 -14.0 -14.2 29.04 12 14 178 17 000 114 74 48 -15-13-12 000 120 24 12 -14.1 -14.4 29.04 11 14 179 18 000 114 71 45 -15-13-12 000 * 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.