USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2025-12-18/00 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 18 00 -10.9 -13.6 28.95 18 29 150 348 000 69 46 39 -11-11-12 000 1 18 01 -12.0 -15.5 28.93 21 31 145 343 000 81 47 40 -12-12-12 000 2 18 02 -12.3 -14.8 28.92 20 31 151 350 000 90 46 39 -13-11-12 000 3 18 03 -12.3 -14.6 28.91 20 30 155 353 000 91 45 39 -13-11-12 000 4 18 04 -12.4 -14.5 28.90 19 29 159 357 000 94 45 39 -13-11-12 000 5 18 05 -12.7 -14.3 28.90 18 28 163 1 -001 99 44 39 -13-11-12 000 6 18 06 -13.1 -14.2 28.87 18 26 165 3 -001 104 44 39 -13-11-12 000 7 18 07 -13.8 -14.3 28.85 17 25 167 6 000 112 43 40 -12-11-12 000 8 18 08 -14.5 -14.9 28.84 17 25 168 6 000 115 43 41 -12-11-12 000 9 18 09 -15.2 -15.5 28.83 16 23 170 9 000 115 46 42 -12-12-12 000 10 18 10 -15.6 -15.9 28.82 16 24 173 12 -001 116 44 42 -12-11-12 000 11 18 11 -15.8 -16.1 28.81 16 25 175 14 000 116 41 42 -12-11-12 000 12 18 12 -16.0 -16.3 28.78 16 26 179 17 -001 116 40 42 -12-12-12 000 13 18 13 -16.1 -16.4 28.77 16 26 182 20 -001 117 40 42 -12-12-12 000 14 18 14 -16.1 -16.4 28.77 16 26 183 21 -001 117 42 43 -13-12-12 000 15 18 15 -16.1 -16.4 28.76 16 26 182 21 000 117 44 43 -13-12-13 000 16 18 16 -16.1 -16.5 28.75 16 25 186 24 000 117 46 44 -14-13-13 000 17 18 17 -15.9 -16.2 28.74 17 25 190 29 -001 116 48 44 -14-13-13 000 18 18 18 -15.5 -15.8 28.73 17 25 195 33 -002 116 50 43 -15-13-14 000 19 18 19 -15.2 -15.4 28.73 17 25 199 37 -005 116 53 43 -15-14-14 000 20 18 20 -14.9 -15.2 28.74 18 25 203 41 -007 115 55 43 -15-14-14 000 21 18 21 -14.6 -15.1 28.73 18 25 207 45 -008 113 58 45 -15-14-14 000 22 18 22 -14.5 -15.1 28.74 19 25 210 49 -009 111 58 44 -15-14-14 000 23 18 23 -14.3 -15.0 28.74 19 25 212 51 -009 109 57 41 -15-14-14 000 24 19 00 -14.0 -14.7 28.74 19 25 214 52 -010 109 57 38 -15-14-14 000 25 19 01 -13.8 -14.6 28.75 19 24 215 54 -011 109 60 37 -15-14-14 000 26 19 02 -13.7 -14.4 28.75 19 24 218 56 -011 109 66 33 -15-14-14 000 27 19 03 -13.6 -14.4 28.77 19 24 221 59 -013 108 68 32 -15-14-14 000 28 19 04 -13.6 -14.3 28.78 19 24 225 63 -013 110 69 40 -15-14-14 000 29 19 05 -13.7 -14.2 28.78 18 23 229 67 -014 111 73 45 -15-14-14 000 30 19 06 -13.7 -14.0 28.80 18 23 231 70 -015 114 70 46 -15-14-14 000 31 19 07 -13.5 -13.8 28.80 19 24 236 74 -014 114 83 50 -14-14-13 000 32 19 08 -13.9 -14.2 28.81 19 25 241 79 -011 114 56 50 -14-13-13 000 33 19 09 -13.7 -14.0 28.81 19 25 244 82 -006 114 59 48 -15-13-13 000 34 19 10 -13.8 -14.1 28.81 20 26 246 84 002 114 53 45 -14-12-12 000 35 19 11 -14.2 -14.5 28.81 20 26 247 86 005 114 55 41 -14-12-12 000 36 19 12 -14.7 -15.0 28.82 19 26 252 90 007 115 57 40 -14-12-11 000 37 19 13 -15.1 -15.4 28.83 19 27 255 93 007 115 54 41 -13-11-11 000 38 19 14 -15.2 -15.5 28.83 19 26 257 95 007 115 52 40 -13-11-11 000 39 19 15 -15.0 -15.7 28.83 18 27 256 95 008 111 46 46 -12-10-10 000 40 19 16 -14.5 -15.8 28.84 17 26 256 94 005 105 48 47 -12-10-10 000 41 19 17 -13.9 -15.6 28.84 16 25 253 92 002 99 50 48 -11-10-10 000 42 19 18 -13.2 -15.6 28.85 17 24 250 89 -001 92 46 46 -11-10-10 000 43 19 19 -12.7 -16.2 28.86 17 24 250 88 -007 81 44 43 -11-10-10 000 44 19 20 -12.4 -16.6 28.87 17 25 249 88 -009 75 41 43 -11-10-10 000 45 19 21 -12.0 -16.6 28.88 17 25 250 88 -010 72 41 43 -11-10-10 000 46 19 22 -11.7 -16.3 28.89 17 24 249 87 -011 71 40 43 -11-10-10 000 47 19 23 -11.3 -15.7 28.91 17 24 249 87 -011 73 40 44 -11-10-10 000 48 20 00 -11.0 -15.1 28.92 16 22 249 87 -012 75 39 46 -10-10-10 000 49 20 01 -10.9 -14.9 28.92 16 22 250 89 -005 76 39 45 -10-10-10 000 50 20 02 -11.0 -15.0 28.94 16 22 253 91 -007 75 39 44 -10-10-10 000 51 20 03 -11.0 -14.7 28.95 15 22 254 92 -006 78 36 44 -10-10-10 000 52 20 04 -11.1 -14.5 28.96 15 21 255 94 -005 81 30 43 -10-10-10 000 53 20 05 -11.2 -13.5 28.98 14 21 257 96 -005 91 26 42 -10-10-10 000 54 20 06 -11.3 -12.5 28.99 14 21 260 99 -005 102 28 42 -10-10-10 000 55 20 07 -10.7 -10.9 29.01 15 20 261 100 -003 110 32 38 -10-10-10 000 56 20 08 -10.3 -10.5 29.03 15 20 264 102 -001 110 40 37 -10-10-10 000 57 20 09 -11.0 -11.2 29.05 14 20 269 107 000 111 49 33 -10-10-10 000 58 20 10 -11.4 -11.7 29.06 14 21 271 109 000 111 47 32 -9-10-10 000 59 20 11 -10.8 -11.1 29.08 14 20 271 110 000 111 52 34 -10-10-10 000 60 20 12 -10.8 -11.0 29.09 14 20 269 107 001 111 54 33 -10-10-11 000 61 20 13 -10.6 -10.8 29.11 13 20 265 104 002 110 67 33 -10-10-11 000 62 20 14 -10.1 -10.4 29.12 13 19 270 109 002 110 59 35 -10-10-11 000 63 20 15 -9.4 -9.8 29.13 13 18 273 112 -001 106 62 42 -10-10-11 000 64 20 16 -9.9 -10.1 29.15 12 17 284 122 000 110 69 58 -10-10-11 000 65 20 17 -8.9 -9.0 29.16 13 17 288 126 -002 109 98 64 -10-11-11 000 66 20 18 -8.3 -9.5 29.18 12 15 295 134 000 97111 73 -9-11-11 000 67 20 19 -8.4 -9.3 29.19 9 14 307 145 000 101 91 65 -9-10-11 000 68 20 20 -7.1 -8.8 29.20 8 15 316 155 -001 93110113 -8-10-11 010 69 20 21 -7.0 -9.2 29.20 13 15 303 141 004 88103114 -8-10-11 002 70 20 22 -7.1 -9.4 29.21 14 16 286 125 -001 87 90112 -8 -9-11 000 71 20 23 -7.1 -9.4 29.21 10 12 275 113 000 87 75 96 -8 -9-10 000 72 21 00 -6.6 -8.8 29.21 7 9 281 119 -001 88100 99 -8 -9-11 002 73 21 01 -6.5 -9.0 29.21 7 7 300 138 -009 85 97100 -8 -9-11 013 74 21 02 -6.6 -8.8 29.21 4 5 290 129 -014 88 97101 -8 -9-11 031 75 21 03 -6.6 -9.3 29.21 1 4 258 96 000 85 98103 -8 -9-11 018 76 21 04 -6.7 -8.4 29.20 3 5 325 163 -009 92102103 -8 -9-11 046 77 21 05 -7.0 -9.1 29.20 1 4 357 195 000 89 95106 -8 -9-11 003 78 21 06 -6.9 -8.5 29.20 1 5 89 287 -002 94108 99 -8-10-11 000 79 21 07 -8.7 -9.7 29.20 3 4 122 321 -003 100108 92 -8-10-11 000 80 21 08 -9.5 -9.8 29.19 4 4 111 309 000 108104 88 -8 -9-11 000 81 21 09 -10.3 -10.7 29.19 4 4 98 296 002 109 90 86 -8 -9-11 000 82 21 10 -11.4 -11.9 29.19 4 6 93 291 000 110 89 90 -8 -9-11 000 83 21 11 -11.4 -11.6 29.19 3 5 75 273 001 111 90102 -8 -9-11 000 84 21 12 -11.1 -11.2 29.19 1 4 49 247 000 110 92104 -8 -9-11 000 85 21 13 -11.1 -11.2 29.18 0 4 45 243 001 110103 97 -8-10-11 000 86 21 14 -11.9 -12.0 29.18 1 5 181 19 001 111102 98 -9-10-11 000 87 21 15 -11.3 -11.7 29.18 4 7 166 5 000 110 90100 -9-10-11 000 88 21 16 -11.3 -11.5 29.18 4 6 165 3 001 111 90 96 -9-10-11 000 89 21 17 -11.3 -11.4 29.18 3 5 159 357 001 111 86 92 -9-10-11 000 90 21 18 -10.4 -10.5 29.18 3 3 148 346 001 110 85 85 -8-10-11 000 91 21 19 -9.6 -9.7 29.18 3 4 151 349 000 110 83 83 -8-10-11 000 92 21 20 -9.1 -9.1 29.17 2 2 156 354 000 109 87 81 -9-10-11 000 93 21 21 -8.7 -8.7 29.18 2 3 159 358 001 109 92 77 -10-10-11 000 94 21 22 -8.4 -8.4 29.18 1 4 199 37 000 108 99 82 -9-10-11 000 95 21 23 -8.0 -8.5 29.17 2 4 232 70 000 104111 78 -9-10-11 000 96 22 00 -7.8 -8.6 29.17 3 5 240 78 000 101111 57 -9-10-11 000 97 22 01 -7.7 -8.8 29.16 4 5 230 68 000 98111 59 -9-10-12 000 98 22 02 -7.8 -9.6 29.16 4 5 217 56 001 92110 53 -9-11-12 000 99 22 03 -7.7 -8.9 29.15 4 5 214 52 001 97111 46 -9-10-12 000 100 22 04 -8.4 -10.0 29.14 5 5 209 47 000 95 96 44 -9-11-12 000 101 22 05 -8.8 -10.1 29.13 3 4 197 35 000 97 92 41 -9-11-12 000 102 22 06 -8.3 -10.3 29.13 4 5 160 359 001 91106 37 -9-11-12 000 103 22 07 -8.6 -9.5 29.13 5 5 174 13 002 101108 38 -10-11-12 000 104 22 08 -9.3 -10.2 29.12 4 5 167 6 002 101111 57 -10-11-12 000 105 22 09 -9.8 -11.7 29.12 3 5 188 27 000 91 98 66 -10-11-13 000 106 22 10 -11.4 -13.2 29.11 4 5 209 48 -002 94 95 72 -10-11-13 000 107 22 11 -11.2 -12.7 29.11 4 5 202 40 000 97 97 65 -10-11-13 000 108 22 12 -11.3 -12.5 29.10 2 4 169 7 000 101 98 71 -10-12-13 000 109 22 13 -11.3 -12.7 29.09 4 5 147 345 000 98 98 84 -10-12-13 000 110 22 14 -11.2 -13.1 29.08 4 5 136 334 000 93 95 93 -10-12-13 000 111 22 15 -10.2 -12.4 29.07 2 4 110 308 001 92 93114 -10-12-13 000 112 22 16 -9.9 -11.0 29.07 1 5 71 269 002 101103106 -10-12-13 000 113 22 17 -9.4 -11.7 29.06 1 5 56 254 002 90 99118 -10-12-13 000 114 22 18 -9.3 -10.7 29.07 5 6 120 319 001 97112118 -11-12-13 002 115 22 19 -9.3 -11.8 29.06 7 8 152 351 007 88103118 -11-12-13 001 116 22 20 -10.2 -12.3 29.07 9 11 161 359 000 91 94 97 -11-12-13 000 117 22 21 -10.5 -12.9 29.07 9 11 161 359 000 89 85 61 -12-13-14 000 118 22 22 -10.4 -13.2 29.07 7 10 149 348 000 86 88 45 -12-13-14 000 119 22 23 -10.2 -13.4 29.07 7 9 151 349 000 83 92 68 -11-13-14 000 120 23 00 -10.3 -13.0 29.08 8 10 169 7 000 86 99 57 -11-13-14 000 * 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.