USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-04-29/00 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 29 00 -31.4 -35.0 27.95 22 33 204 42 000 98 96 99 -29-28-28 000 1 29 01 -33.8 -36.6 27.93 28 40 202 41 -005 106104 91 -33-30-29 009 2 29 02 -33.8 -37.0 27.93 26 40 216 54 -007 101100 91 -33-30-29 016 3 29 03 -34.4 -37.8 27.93 26 36 230 68 004 99 99 88 -34-29-29 025 4 29 04 -34.9 -38.3 27.90 25 31 245 83 001 99 99 85 -35-29-27 022 5 29 05 -35.5 -38.9 27.92 24 30 258 96 -028 100 98 96 -35-30-28 013 6 29 06 -35.7 -39.1 27.94 23 28 259 97 -018 100 95 96 -33-30-29 008 7 29 07 -36.1 -39.5 27.94 24 29 255 94 -005 101 90 90 -30-28-27 005 8 29 08 -36.6 -40.0 27.96 24 30 260 99 -003 101 89 86 -30-27-26 003 9 29 09 -37.2 -40.4 27.97 25 32 265 103 -013 103 90 80 -30-26-26 002 10 29 10 -36.8 -40.0 28.02 24 36 276 114 -028 104 94 79 -30-27-26 002 11 29 11 -35.9 -38.7 28.05 24 38 278 116 -018 108 94 87 -30-27-27 002 12 29 12 -34.6 -37.0 28.06 26 39 280 119 -009 112 94 83 -29-27-27 001 13 29 13 -35.1 -37.6 28.11 27 41 279 118 -003 111 87 84 -31-28-27 002 14 29 14 -33.8 -36.2 28.16 25 40 287 125 -006 112 89 88 -30-28-28 001 15 29 15 -31.7 -33.9 28.20 25 38 297 135 -006 112 91 91 -27-27-27 001 16 29 16 -32.1 -34.7 28.23 25 37 296 135 000 108 98 96 -27-26-27 001 17 29 17 -33.0 -35.9 28.29 23 33 300 138 -001 104103 87 -27-26-26 002 18 29 18 -31.6 -34.7 28.35 22 31 293 132 018 101111 97 -27-26-26 007 19 29 19 -30.2 -33.3 28.40 22 31 294 132 016 99104103 -26-25-25 011 20 29 20 -29.0 -31.9 28.47 21 33 292 130 016 101103104 -25-26-27 014 21 29 21 -28.7 -31.5 28.52 21 32 286 124 006 101 95 92 -26-27-27 004 22 29 22 -28.8 -31.4 28.57 18 30 299 137 -006 105 89 85 -26-26-27 000 23 29 23 -30.1 -31.8 28.62 18 28 309 147 -005 116 86 78 -26-26-27 000 24 30 00 -30.8 -33.9 28.66 16 28 313 152 -001 100 86 76 -27-27-27 000 25 30 01 -30.6 -33.2 28.69 15 27 308 147 000 106 78 71 -27-26-27 000 26 30 02 -30.3 -31.0 28.72 12 24 330 169 002 132 89 71 -28-28-27 000 27 30 03 -30.7 -32.0 28.75 14 25 344 183 -002 124 76 86 -28-27-28 000 28 30 04 -30.5 -31.8 28.78 15 24 350 188 -001 123 76 88 -28-28-27 000 29 30 05 -31.4 -32.6 28.80 14 23 356 194 000 126 71 83 -29-28-27 000 30 30 06 -31.0 -32.0 28.83 16 26 357 196 000 128 71 81 -29-28-27 000 31 30 07 -31.2 -32.1 28.85 14 25 2 200 001 130 78 79 -29-28-26 000 32 30 08 -33.1 -33.7 28.86 12 23 12 211 001 137 79 75 -29-28-26 000 33 30 09 -33.2 -33.8 28.86 13 24 11 210 -001 137 76 70 -29-28-26 000 34 30 10 -33.6 -34.1 28.88 12 22 19 217 005 138 68 74 -29-28-26 000 35 30 11 -34.0 -34.5 28.89 12 20 33 231 007 138 67 73 -29-28-26 000 36 30 12 -34.5 -35.5 28.90 11 17 47 245 007 132 70 61 -28-28-27 000 37 30 13 -34.7 -35.9 28.91 11 16 65 263 005 129 63 52 -28-27-27 000 38 30 14 -33.6 -34.8 28.91 12 18 78 276 006 129 64 50 -28-27-26 000 39 30 15 -33.3 -34.5 28.91 13 20 89 287 006 128 60 47 -28-27-25 000 40 30 16 -33.3 -35.2 28.90 15 25 94 292 007 117 59 44 -27-27-25 000 41 30 17 -32.7 -35.5 28.88 17 27 91 289 -001 105 53 41 -28-26-23 000 42 30 18 -32.5 -35.4 28.86 15 25 97 296 -004 102 48 37 -26-25-24 000 43 30 19 -31.8 -34.9 28.85 15 27 99 298 -005 100 43 32 -26-25-23 000 44 30 20 -31.2 -35.3 28.83 16 29 99 297 -009 88 33 28 -25-23-21 000 45 30 21 -32.2 -35.5 28.82 16 28 93 291 -008 97 37 27 -25-22-21 000 46 30 22 -31.1 -35.1 28.81 17 29 96 295 -005 90 49 42 -24-21-20 000 47 30 23 -30.3 -34.8 28.81 16 28 104 302 -009 83 57 88 -22-21-21 000 48 01 00 -29.7 -34.3 28.80 17 28 105 303 -005 82 82 87 -21-20-21 000 49 01 01 -29.4 -33.6 28.79 16 29 98 297 004 86 85 88 -21-21-22 000 50 01 02 -28.7 -32.2 28.78 17 32 95 294 000 93104 96 -20-21-22 000 51 01 03 -27.9 -30.4 28.78 17 32 93 291 -004 104111 88 -19-20-22 001 52 01 04 -26.5 -28.9 28.77 18 33 92 291 -010 104108 92 -19-20-21 004 53 01 05 -26.4 -29.4 28.77 16 29 95 293 -011 98112 87 -19-20-20 002 54 01 06 -26.6 -30.0 28.77 13 26 103 302 -009 93104 79 -19-19-20 000 55 01 07 -27.6 -30.4 28.76 14 27 107 305 -009 100 84 69 -18-19-20 000 56 01 08 -28.0 -30.7 28.74 16 28 114 312 -003 101 58 69 -18-18-19 000 57 01 09 -27.5 -31.7 28.73 18 30 114 313 -005 85 57 72 -19-18-19 000 58 01 10 -27.4 -33.0 28.72 20 33 115 314 -001 71 27 44 -20-18-18 000 59 01 11 -26.5 -32.5 28.70 20 33 121 319 000 68 20 33 -21-19-18 000 60 01 12 -25.9 -32.6 28.68 21 36 122 320 -003 62 21 16 -21-20-19 000 61 01 13 -25.7 -32.8 28.66 23 38 125 324 -006 59 19 16 -20-20-19 000 62 01 14 -25.0 -32.3 28.64 25 42 126 324 005 57 18 15 -20-20-19 000 63 01 15 -24.4 -32.1 28.62 26 43 126 325 -002 54 17 14 -20-19-18 000 64 01 16 -24.4 -32.0 28.60 27 43 130 328 -004 54 15 13 -19-18-18 000 65 01 17 -24.4 -31.9 28.58 26 43 132 330 -001 55 15 15 -19-18-18 000 66 01 18 -24.7 -32.1 28.56 26 42 136 334 -003 56 14 30 -18-17-17 000 67 01 19 -24.7 -31.8 28.55 25 42 139 337 -002 58 13 41 -18-17-17 000 68 01 20 -24.6 -31.6 28.54 25 41 142 340 -005 59 12 23 -17-16-17 000 69 01 21 -24.7 -31.4 28.52 24 40 147 345 -003 61 10 24 -17-15-16 000 70 01 22 -24.6 -31.2 28.51 23 39 149 347 000 62 8 56 -16-14-15 000 71 01 23 -24.8 -31.3 28.50 22 38 152 350 000 63 13 17 -16-14-14 000 72 02 00 -25.0 -31.4 28.49 22 36 154 353 000 64 37 18 -16-14-14 000 73 02 01 -25.3 -31.2 28.47 20 33 156 354 000 68 53 69 -15-13-13 000 74 02 02 -25.3 -30.3 28.46 18 32 155 353 -002 75 52 84 -14-13-13 000 75 02 03 -24.7 -28.9 28.45 18 30 152 350 -003 83 56 91 -13-12-13 000 76 02 04 -23.9 -27.9 28.44 14 26 147 346 -004 84 38 95 -12-12-12 000 77 02 05 -22.8 -27.5 28.44 13 26 147 345 -002 77 60 98 -13-12-12 000 78 02 06 -20.4 -24.7 28.44 13 24 142 341 -004 78 54 89 -12-11-12 000 79 02 07 -19.0 -22.7 28.44 12 22 136 334 -004 83 59 81 -13-12-12 000 80 02 08 -18.3 -20.8 28.45 10 17 121 319 -005 93 57 81 -13-12-12 000 81 02 09 -19.2 -20.8 28.46 9 13 122 320 -002 102 54 80 -11-11-11 000 82 02 10 -18.8 -20.4 28.46 8 9 118 316 -004 102 57 79 -11-10-10 000 83 02 11 -18.6 -19.7 28.46 7 7 128 326 000 106 56 75 -10 -9-10 000 84 02 12 -19.4 -21.1 28.47 9 11 159 357 001 99 59 69 -12-10-10 000 85 02 13 -16.9 -19.2 28.48 5 6 158 356 002 93 71 68 -11-11-10 000 86 02 14 -16.8 -19.4 28.49 5 5 122 321 005 90 75 69 -11-11-12 000 87 02 15 -17.6 -19.4 28.50 5 9 69 267 001 97 71 71 -11-11-11 000 88 02 16 -19.1 -19.7 28.52 4 7 41 240 000 112 75 71 -11-11-11 000 89 02 17 -18.0 -19.2 28.53 5 6 354 192 005 104 72 76 -10-11-12 000 90 02 18 -17.0 -18.3 28.54 3 5 340 178 000 101 70 83 -10-11-12 000 91 02 19 -17.2 -18.1 28.56 6 9 351 190 -002 105 70 80 -11-11-12 000 92 02 20 -17.2 -18.4 28.57 7 9 333 171 -004 102 64 86 -9-10-11 000 93 02 21 -14.6 -17.6 28.59 6 8 356 194 000 84 71 93 -9-10-11 000 94 02 22 -12.9 -16.9 28.60 5 7 355 193 001 77 76 95 -9-10-12 000 95 02 23 -12.2 -16.2 28.61 4 7 23 221 002 78 76106 -9-10-12 000 96 03 00 -13.8 -15.9 28.62 4 8 35 233 001 93 88100 -9-10-12 000 97 03 01 -15.6 -16.2 28.63 4 7 28 226 003 107 85 91 -10-10-12 000 98 03 02 -15.0 -15.3 28.63 4 7 27 226 001 108 76 91 -10-10-11 000 99 03 03 -14.5 -14.5 28.63 2 5 18 216 002 113 74 95 -9-10-11 000 100 03 04 -15.1 -15.1 28.61 3 5 300 138 004 114 75 82 -9-10-11 000 101 03 05 -15.6 -15.6 28.61 6 13 198 37 001 114 75 91 -10-10-11 000 102 03 06 -18.1 -19.1 28.61 10 14 156 354 000 105 77 92 -10-11-11 000 103 03 07 -17.7 -19.8 28.58 10 16 189 27 001 92 61 77 -10-10-11 000 104 03 08 -17.9 -19.4 28.56 12 18 194 32 -001 102 63 69 -11-11-11 000 105 03 09 -19.2 -19.6 28.54 11 18 196 35 -004 119 57 61 -11-11-11 000 106 03 10 -19.9 -20.3 28.52 11 19 191 29 -003 120 51 63 -11-11-12 000 107 03 11 -20.6 -21.1 28.49 13 21 195 33 -001 121 52 54 -12-11-11 000 108 03 12 -22.2 -22.7 28.48 11 19 192 31 -003 123 67 75 -12-11-11 000 109 03 13 -22.9 -23.4 28.46 12 21 178 17 -002 124 48 52 -12-10-11 000 110 03 14 -23.3 -23.8 28.45 12 22 170 8 -006 124 40 48 -12-10-11 000 111 03 15 -23.5 -24.0 28.44 10 19 173 11 -003 124 45 45 -13-12-12 000 112 03 16 -24.1 -24.9 28.44 9 15 182 21 001 119 41 47 -13-12-12 000 113 03 17 -24.4 -25.3 28.44 9 15 183 21 -001 119 44 46 -14-13-14 000 114 03 18 -24.2 -25.6 28.43 8 13 175 13 001 110 54 46 -15-15-13 000 115 03 19 -22.8 -24.8 28.42 6 9 156 354 -008 100 50 48 -14-14-14 000 116 03 20 -23.0 -24.6 28.42 7 12 80 278 004 103 47 51 -16-14-14 000 117 03 21 -25.1 -25.4 28.42 8 12 23 221 -004 124 45 51 -15-13-14 000 118 03 22 -25.8 -26.3 28.42 9 14 28 227 001 126 55 51 -16-15-15 000 119 03 23 -26.7 -27.3 28.44 8 15 36 235 001 127 54 54 -17-15-14 000 120 04 00 -25.4 -25.9 28.46 12 28 44 242 -001 127 95 63 -16-16-15 000 * 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.