USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2025-09-29/12 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 29 12 -22.5 -26.7 28.79 10 25 231 70 000 69 79 91 -13-13-13 000 1 29 13 -21.6 -24.5 28.80 15 24 210 48 -004 94115 90 -16-15-14 000 2 29 14 -22.7 -24.6 28.80 13 24 217 55 -004 107114 86 -16-14-14 000 3 29 15 -21.3 -24.6 28.80 15 24 213 52 000 90115 87 -16-15-13 000 4 29 16 -21.7 -25.1 28.78 16 24 213 51 000 88115 90 -16-15-13 000 5 29 17 -21.9 -24.5 28.78 15 24 219 57 -002 98114 88 -15-14-12 002 6 29 18 -21.1 -23.2 28.79 14 23 213 51 000 102115 87 -15-14-12 002 7 29 19 -20.1 -21.6 28.77 13 22 202 40 000 107115 94 -15-15-13 000 8 29 20 -19.2 -20.2 28.74 12 20 195 33 000 112116 86 -16-15-13 000 9 29 21 -18.7 -19.1 28.75 13 22 197 35 -003 120115 58 -16-15-11 000 10 29 22 -18.4 -18.8 28.73 13 22 192 30 -003 119 84 61 -17-13-13 000 11 29 23 -18.7 -19.0 28.74 14 20 188 26 -002 120 75 44 -18-14-13 000 12 30 00 -19.9 -20.2 28.73 14 18 189 28 -003 121 62 36 -17-14-13 000 13 30 01 -21.7 -22.1 28.71 10 15 193 31 -001 123 35 25 -15-14-13 000 14 30 02 -23.1 -23.5 28.71 10 13 193 31 -004 125 37 62 -16-15-14 000 15 30 03 -24.6 -25.1 28.70 7 9 206 44 -001 127 43 65 -17-15-14 000 16 30 04 -26.4 -27.1 28.68 6 9 205 43 -001 128 71 52 -18-17-15 000 17 30 05 -27.5 -28.0 28.67 6 10 180 18 001 129 78 56 -19-17-15 000 18 30 06 -27.2 -27.6 28.66 7 12 136 334 004 127 72 42 -18-15-14 000 19 30 07 -27.0 -27.8 28.66 9 14 110 309 000 123 42 30 -17-14-13 000 20 30 08 -26.2 -27.0 28.65 10 16 103 301 000 122 45 24 -17-14-13 000 21 30 09 -25.9 -27.0 28.65 11 17 100 298 -004 118 36 45 -16-14-13 000 22 30 10 -25.0 -27.4 28.65 11 17 97 295 -006 100 91 98 -16-14-14 000 23 30 11 -24.2 -26.1 28.64 10 13 102 301 -003 105106 84 -15-15-15 000 24 30 12 -22.9 -23.1 28.64 8 11 117 316 -004 122 96 95 -14-14-14 000 25 30 13 -21.4 -21.9 28.65 10 16 122 321 -005 121 82108 -13-13-14 000 26 30 14 -20.1 -20.6 28.66 11 19 118 316 -003 120 81108 -12-13-14 000 27 30 15 -18.4 -19.1 28.65 10 17 113 311 000 114 86 74 -12-13-13 000 28 30 16 -19.9 -20.3 28.66 10 15 105 303 -001 119 83 71 -12-13-14 000 29 30 17 -19.3 -20.9 28.65 9 12 107 306 -001 99 72 88 -11-12-13 000 30 30 18 -18.5 -20.9 28.66 8 12 103 302 -003 90 69 79 -11-12-13 000 31 30 19 -17.2 -20.1 28.67 6 10 97 295 -003 87 70 90 -11-12-13 000 32 30 20 -16.3 -19.8 28.67 5 10 86 284 -003 83 81107 -12-12-13 000 33 30 21 -17.0 -20.1 28.67 6 10 100 298 000 84 83100 -11-12-13 000 34 30 22 -17.1 -19.8 28.67 6 10 69 267 -003 89 87 96 -12-12-14 000 35 30 23 -17.5 -19.6 28.69 6 13 55 253 -005 95101 82 -12-13-14 000 36 01 00 -18.0 -19.7 28.70 6 13 48 247 -006 101 91 81 -13-13-14 000 37 01 01 -17.9 -18.9 28.71 6 12 39 237 -004 107103 80 -13-14-14 000 38 01 02 -18.2 -18.7 28.71 7 14 17 216 -005 113105 73 -13-14-15 000 39 01 03 -18.8 -19.0 28.72 7 17 0 198 -006 117113 76 -13-15-15 000 40 01 04 -17.7 -18.2 28.73 8 17 357 196 -005 117116 74 -14-15-15 000 41 01 05 -15.8 -16.7 28.73 8 17 354 192 -003 111116 78 -13-15-16 000 42 01 06 -15.2 -15.7 28.73 9 17 355 194 -002 114116 63 -13-15-16 000 43 01 07 -15.1 -15.5 28.73 10 19 349 187 001 115116 62 -14-15-15 000 44 01 08 -14.4 -15.3 28.74 11 19 344 182 002 107116 57 -14-15-16 000 45 01 09 -16.8 -17.3 28.74 8 20 352 190 004 116116 59 -14-15-15 000 46 01 10 -18.3 -18.9 28.74 6 15 351 189 002 118115 65 -14-15-16 000 47 01 11 -20.3 -20.9 28.76 6 15 351 189 009 120109 70 -13-15-16 000 48 01 12 -17.5 -18.2 28.76 6 14 346 185 007 117113 74 -13-15-16 000 49 01 13 -18.1 -18.7 28.77 6 11 334 173 005 118112 61 -14-15-16 000 50 01 14 -19.0 -19.7 28.77 6 11 339 178 006 119113 55 -14-15-17 000 51 01 15 -19.0 -19.7 28.78 6 11 332 170 004 119114 66 -14-15-17 000 52 01 16 -17.4 -17.9 28.79 6 11 351 189 002 118116 73 -14-15-17 000 53 01 17 -18.0 -18.5 28.80 6 10 2 200 001 119117 71 -15-16-16 000 54 01 18 -17.8 -18.1 28.80 6 11 6 205 000 118117 69 -15-16-15 000 55 01 19 -17.6 -17.9 28.80 8 13 352 191 002 118118 65 -16-17-14 000 56 01 20 -16.9 -17.2 28.81 8 13 355 193 002 117119 51 -17-18-14 000 57 01 21 -16.6 -16.9 28.82 10 13 3 201 000 117120 46 -17-18-14 000 58 01 22 -16.4 -16.7 28.83 10 13 359 198 000 117120 30 -17-19-14 000 59 01 23 -16.6 -16.9 28.84 10 13 1 200 001 117120 38 -18-19-14 000 60 02 00 -16.6 -16.9 28.85 12 14 5 204 001 117120 40 -18-19-13 000 61 02 01 -16.7 -17.0 28.85 13 15 11 209 000 117120 35 -18-18-13 000 62 02 02 -17.1 -17.4 28.86 13 15 13 211 000 118108 34 -18-18-13 000 63 02 03 -17.7 -18.0 28.86 13 16 16 215 000 118 89 35 -19-16-13 000 64 02 04 -18.3 -18.7 28.86 12 15 22 221 -001 119 62 38 -19-15-13 000 65 02 05 -19.3 -19.6 28.86 11 14 34 233 000 120 54 45 -19-14-13 000 66 02 06 -20.7 -21.2 28.87 8 11 41 239 000 122 56 48 -16-14-13 000 67 02 07 -22.5 -23.2 28.88 6 8 50 249 000 124 53 46 -15-14-13 000 68 02 08 -22.9 -23.5 28.89 4 7 49 248 000 123 63 44 -15-13-13 000 69 02 09 -21.1 -21.6 28.90 3 7 18 216 -001 118 80 44 -15-14-14 000 70 02 10 -21.2 -22.0 28.90 5 9 351 189 -001 116 63 43 -14-15-14 000 71 02 11 -21.5 -22.7 28.91 5 10 351 190 000 111 44 43 -14-14-14 000 72 02 12 -21.6 -23.1 28.92 6 10 350 189 000 108 39 65 -14-13-14 000 73 02 13 -21.5 -23.2 28.92 6 10 342 181 000 108 39 79 -14-13-14 000 74 02 14 -21.8 -23.5 28.93 6 10 328 166 000 107 53 81 -14-14-13 000 75 02 15 -21.1 -23.1 28.93 6 9 312 151 -002 102 58 74 -15-14-13 000 76 02 16 -21.2 -22.4 28.94 6 11 321 159 -001 113 52 50 -15-14-14 000 77 02 17 -21.4 -22.8 28.95 7 14 318 156 000 112 57 38 -15-15-15 000 78 02 18 -21.0 -22.0 28.96 7 13 322 161 000 118 71 41 -16-15-15 000 79 02 19 -21.6 -22.0 28.96 7 19 341 180 000 123 63 49 -15-14-15 000 80 02 20 -19.8 -20.2 28.97 12 20 336 175 000 121 80 50 -16-15-15 000 81 02 21 -18.8 -19.2 28.97 13 22 337 175 000 120 97 51 -17-16-15 000 82 02 22 -18.3 -18.7 28.98 12 22 335 173 000 119113 55 -18-17-15 000 83 02 23 -18.2 -19.3 28.98 11 20 333 171 -001 110118 69 -18-18-17 001 84 03 00 -18.1 -19.9 28.98 9 18 332 171 000 103119 87 -18-18-18 006 85 03 01 -18.1 -19.9 28.99 9 16 335 173 000 103119 94 -18-18-19 003 86 03 02 -19.3 -21.0 28.98 6 9 343 181 000 105119 90 -18-18-19 002 87 03 03 -21.0 -22.5 28.98 5 11 347 185 001 109114 86 -18-18-19 001 88 03 04 -20.9 -22.3 28.97 5 12 351 190 000 111114 81 -18-18-20 001 89 03 05 -20.6 -22.2 28.96 4 9 1 199 000 109118 92 -17-18-20 001 90 03 06 -20.3 -21.9 28.95 5 9 17 215 000 107114 92 -17-18-20 002 91 03 07 -20.1 -21.9 28.95 4 9 23 221 001 106117 97 -17-18-19 003 92 03 08 -20.7 -22.2 28.94 5 11 21 220 -001 110112 97 -17-18-19 003 93 03 09 -20.8 -22.2 28.94 5 12 26 224 -001 111113 93 -17-18-19 003 94 03 10 -21.0 -22.1 28.93 4 11 25 224 000 114112102 -17-18-19 003 95 03 11 -21.9 -22.4 28.93 5 10 28 226 000 121 98105 -17-18-19 002 96 03 12 -22.1 -22.5 28.91 5 12 24 222 000 122101105 -17-18-19 001 97 03 13 -22.0 -22.2 28.90 5 11 3 202 000 122101104 -17-18-19 001 98 03 14 -22.0 -22.4 28.89 6 10 351 189 000 121101106 -17-18-19 003 99 03 15 -23.2 -23.6 28.87 6 9 334 172 001 123111103 -17-18-20 003 100 03 16 -23.3 -23.5 28.86 5 8 314 152 001 123110103 -18-19-20 002 101 03 17 -23.2 -23.4 28.84 4 10 302 140 -001 124105103 -18-19-20 000 102 03 18 -23.7 -24.0 28.83 4 12 282 120 000 124112104 -18-19-20 000 103 03 19 -21.6 -21.8 28.82 4 10 274 112 000 122106110 -18-19-20 000 104 03 20 -20.7 -20.9 28.81 3 9 260 98 000 121104105 -18-19-20 000 105 03 21 -20.0 -20.6 28.81 1 9 240 78 000 116105106 -18-19-21 000 106 03 22 -19.7 -20.9 28.79 2 9 305 144 001 109107103 -18-20-21 001 107 03 23 -21.1 -22.0 28.78 4 5 257 96 000 117113104 -19-20-21 002 108 04 00 -21.3 -22.4 28.77 3 5 245 84 001 116112101 -19-20-21 002 109 04 01 -21.5 -22.9 28.75 4 6 242 80 000 113107103 -19-20-21 002 110 04 02 -22.3 -23.6 28.74 3 4 219 57 000 114102104 -19-20-21 001 111 04 03 -22.1 -23.5 28.72 2 7 212 50 001 110102102 -20-20-21 002 112 04 04 -23.5 -24.5 28.71 4 5 216 54 000 115104101 -20-21-21 001 113 04 05 -24.5 -24.9 28.69 4 6 228 66 000 123107100 -21-21-21 000 114 04 06 -24.7 -24.8 28.68 4 7 241 80 000 126106101 -21-21-21 000 115 04 07 -26.3 -26.5 28.67 5 8 244 83 000 127107104 -21-21-20 000 116 04 08 -27.0 -27.3 28.66 5 9 252 90 000 128106 90 -21-21-20 000 117 04 09 -27.8 -28.2 28.65 6 10 249 88 000 128103 79 -22-21-19 000 118 04 10 -28.5 -29.0 28.64 6 10 246 84 000 129102 70 -22-20-19 000 119 04 11 -28.6 -29.0 28.63 7 10 244 82 -001 129107 75 -22-20-19 000 120 04 12 -28.9 -29.4 28.62 7 10 228 66 -001 130106 95 -22-20-19 000 * 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.