USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-04-30/12 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 30 12 -35.8 -39.7 28.86 4 12 20 219 000 74 64 70 -26-27-27 000 1 30 13 -36.5 -36.8 28.85 8 12 27 225 001 136 64 63 -28-27-27 000 2 30 14 -35.7 -35.8 28.85 7 11 54 252 001 133 63 58 -28-27-27 000 3 30 15 -36.2 -36.2 28.86 8 13 80 278 002 138 63 55 -28-27-27 000 4 30 16 -36.0 -36.4 28.86 11 17 92 290 002 138 60 52 -28-27-27 000 5 30 17 -35.5 -36.9 28.85 13 21 98 296 001 126 58 45 -28-27-26 000 6 30 18 -35.2 -37.0 28.87 13 23 96 294 001 120 55 40 -28-26-26 000 7 30 19 -35.0 -36.9 28.83 14 24 98 297 003 118 51 37 -27-26-25 000 8 30 20 -34.5 -36.9 28.82 15 27 100 298 002 110 50 33 -27-26-25 000 9 30 21 -33.6 -36.7 28.81 17 31 103 302 002 102 45 29 -27-25-24 000 10 30 22 -33.1 -36.5 28.80 19 34 108 306 001 97 36 27 -26-24-23 000 11 30 23 -32.5 -37.2 28.78 21 36 109 307 000 83 33 24 -26-23-22 000 12 01 00 -31.8 -37.0 28.77 22 38 108 306 -002 77 31 23 -25-23-22 000 13 01 01 -31.5 -36.9 28.78 25 40 105 303 -003 76 31 23 -25-23-21 000 14 01 02 -31.6 -37.0 28.77 25 41 105 304 -004 76 29 23 -25-22-21 000 15 01 03 -30.9 -36.6 28.76 25 41 107 305 -008 72 27 25 -24-21-21 000 16 01 04 -30.7 -36.7 28.74 25 41 107 306 -009 70 25 32 -23-21-20 000 17 01 05 -30.1 -36.4 28.73 24 38 110 309 -011 66 21 72 -23-20-20 000 18 01 06 -30.2 -36.5 28.72 23 36 113 311 -012 67 27 87 -21-20-20 000 19 01 07 -30.1 -36.3 28.71 22 35 115 313 -010 67 40 83 -21-19-20 000 20 01 08 -29.5 -36.0 28.71 20 34 116 315 -012 65 29 87 -21-19-20 000 21 01 09 -29.1 -35.7 28.69 19 33 117 315 -006 63 26 90 -21-20-19 000 22 01 10 -28.4 -35.4 28.68 19 34 120 319 000 60 21 86 -21-20-19 000 23 01 11 -27.2 -34.6 28.66 22 37 124 322 000 57 20 79 -21-20-19 000 24 01 12 -26.1 -33.6 28.64 23 38 125 324 001 55 20 45 -21-20-20 000 25 01 13 -25.9 -33.5 28.62 24 38 128 327 -005 55 20 25 -21-20-20 000 26 01 14 -26.5 -33.8 28.60 25 39 133 332 -007 57 21 19 -21-20-20 000 27 01 15 -27.0 -34.0 28.57 24 40 140 338 -009 60 21 19 -21-20-19 000 28 01 16 -27.5 -34.0 28.55 24 40 145 343 -004 64 20 22 -20-20-19 000 29 01 17 -27.7 -34.2 28.52 24 38 150 348 -002 64 19 17 -20-19-19 000 30 01 18 -27.2 -33.8 28.50 25 39 153 351 -011 63 17 25 -20-19-18 000 31 01 19 -27.9 -34.1 28.49 24 37 157 355 -006 66 17 49 -20-19-18 000 32 01 20 -28.7 -34.8 28.47 23 35 160 358 -004 67 15 83 -20-18-18 000 33 01 21 -28.7 -35.0 28.46 22 36 163 1 -001 65 13 80 -19-17-17 000 34 01 22 -28.6 -35.0 28.45 21 34 165 3 -001 65 11 59 -18-17-17 000 35 01 23 -28.3 -34.9 28.45 20 34 167 5 -001 63 9 81 -17-16-16 000 36 02 00 -27.8 -34.6 28.44 19 30 166 4 003 62 9 93 -17-15-15 000 37 02 01 -28.2 -34.7 28.42 18 29 169 8 000 64 7 96 -16-14-15 000 38 02 02 -29.4 -35.5 28.42 17 29 172 10 000 68 6 85 -15-13-14 000 39 02 03 -30.2 -36.1 28.42 16 30 170 9 003 69 7 54 -14-13-14 000 40 02 04 -30.9 -36.1 28.41 16 31 170 8 002 76 6 56 -14-13-13 000 41 02 05 -31.1 -34.8 28.41 15 29 171 10 006 93 12 51 -13-13-14 000 42 02 06 -30.7 -32.3 28.40 14 27 170 9 001 119 27 50 -13-13-13 000 43 02 07 -29.0 -30.5 28.41 13 25 156 354 004 118 53 52 -14-15-14 000 44 02 08 -26.2 -28.6 28.39 13 23 152 350 004 102 44 67 -13-13-13 000 45 02 09 -23.4 -26.0 28.38 12 20 152 350 -001 98 66 64 -12-12-13 000 46 02 10 -22.9 -24.9 28.39 12 19 148 346 000 103 62 52 -11-12-12 000 47 02 11 -21.8 -23.6 28.38 12 17 149 347 -002 104 48 43 -11-11-12 000 48 02 12 -20.8 -21.6 28.38 11 18 151 349 002 116 58 50 -11-11-12 000 49 02 13 -20.8 -21.2 28.38 12 21 144 343 -001 121 58 53 -11-11-12 000 50 02 14 -20.3 -20.7 28.39 12 22 136 335 002 120 59 77 -12-12-12 000 51 02 15 -19.1 -19.5 28.38 11 21 130 328 004 118 61 77 -11-12-12 000 52 02 16 -17.4 -18.0 28.37 10 21 127 325 -002 114 57 79 -11-11-10 000 53 02 17 -16.8 -18.0 28.36 9 20 127 326 -005 106 59 80 -11-11-10 000 54 02 18 -17.6 -19.0 28.35 11 22 120 319 -004 106 57 82 -11-11-11 000 55 02 19 -16.0 -17.6 28.33 9 17 130 328 -003 101 75 69 -10-11-11 000 56 02 20 -16.9 -17.6 28.33 8 14 159 357 000 114 71 81 -11-11-12 000 57 02 21 -17.6 -18.2 28.32 7 14 173 12 -001 117 76 97 -11-12-12 000 58 02 22 -19.2 -19.7 28.32 9 16 180 18 -009 120 82 80 -12-12-13 000 59 02 23 -19.9 -20.9 28.32 8 15 179 18 -007 114 92 82 -12-12-12 000 60 03 00 -20.8 -21.9 28.33 6 12 154 352 003 112 98 88 -13-12-13 000 61 03 01 -23.2 -23.7 28.33 7 7 10 208 000 123 81 85 -14-13-14 000 62 03 02 -21.8 -22.3 28.33 8 9 346 185 001 118103104 -13-13-13 000 63 03 03 -21.1 -22.5 28.34 9 13 354 192 -002 104 95 96 -12-13-13 000 64 03 04 -21.1 -21.6 28.36 11 17 6 204 -002 121102 95 -14-13-14 000 65 03 05 -20.7 -21.2 28.38 10 26 11 209 -006 121101 94 -13-14-14 001 66 03 06 -22.9 -23.4 28.42 12 28 12 211 -004 124104 99 -15-15-16 005 67 03 07 -21.4 -22.3 28.44 12 28 344 183 -012 117 94102 -15-15-16 004 68 03 08 -21.7 -22.1 28.48 15 27 342 180 -006 122 89 99 -17-16-16 003 69 03 09 -21.6 -22.3 28.50 15 25 348 187 000 120 93100 -18-17-16 001 70 03 10 -23.5 -24.0 28.53 12 24 358 196 -003 125 74102 -19-17-16 000 71 03 11 -24.6 -25.2 28.56 11 22 2 200 000 126 83 86 -19-19-18 000 72 03 12 -24.4 -24.9 28.57 13 25 359 197 000 126 76 70 -19-18-18 000 73 03 13 -24.9 -25.4 28.59 11 22 1 199 -004 126 72 80 -19-17-17 000 74 03 14 -25.6 -26.2 28.61 9 19 10 208 -013 126 82 92 -19-18-18 000 75 03 15 -26.1 -26.6 28.64 7 17 6 205 -010 126 89 94 -20-19-18 000 76 03 16 -25.7 -26.1 28.66 7 16 24 223 -006 125 94105 -20-20-18 000 77 03 17 -25.8 -25.9 28.68 7 11 58 256 -004 126 93100 -20-20-19 000 78 03 18 -25.6 -25.7 28.69 7 10 81 280 -004 125 83 92 -20-19-19 000 79 03 19 -25.4 -25.5 28.70 7 10 98 297 -004 125 82 83 -19-18-19 000 80 03 20 -25.8 -26.0 28.72 7 11 83 282 001 125 86 57 -19-19-19 000 81 03 21 -25.4 -25.6 28.73 7 12 85 283 008 125 94 57 -19-19-19 000 82 03 22 -25.6 -26.0 28.75 8 12 89 287 004 125 87 56 -19-19-18 000 83 03 23 -25.8 -26.2 28.78 9 12 96 295 000 125 65 56 -18-17-18 000 84 04 00 -25.7 -26.1 28.79 9 13 96 294 003 125 58 55 -18-17-18 000 85 04 01 -25.1 -25.4 28.81 9 12 95 293 000 124 61 52 -17-16-17 000 86 04 02 -24.4 -24.7 28.82 8 11 95 294 000 123 61 49 -16-16-17 000 87 04 03 -24.2 -24.7 28.84 8 10 104 302 002 123 61 50 -16-16-17 000 88 04 04 -23.5 -24.7 28.85 8 10 106 304 000 110 63 50 -16-16-17 000 89 04 05 -23.6 -24.5 28.87 9 11 104 303 -001 114 63 46 -15-16-16 000 90 04 06 -23.5 -24.0 28.88 10 13 107 305 000 123 62 65 -15-16-16 000 91 04 07 -23.4 -24.0 28.90 10 13 105 303 -001 119 61 76 -15-16-16 000 92 04 08 -23.1 -23.6 28.91 10 14 106 305 -004 123 60 84 -15-16-16 000 93 04 09 -23.0 -23.4 28.93 10 15 109 307 -004 123 58 81 -15-15-16 000 94 04 10 -23.2 -23.7 28.94 10 16 115 313 -001 123 62 69 -14-15-16 000 95 04 11 -23.0 -23.5 28.95 11 19 119 317 000 123 61 60 -14-15-16 000 96 04 12 -22.9 -23.4 28.95 12 20 120 319 000 123 58 63 -14-15-15 000 97 04 13 -22.7 -23.2 28.96 12 21 121 319 003 123 54 63 -14-14-15 000 98 04 14 -22.4 -22.9 28.96 13 22 121 319 002 123 47 62 -14-14-15 000 99 04 15 -21.9 -22.4 28.96 12 22 129 327 001 122 41 58 -14-14-14 000 100 04 16 -21.8 -22.2 28.96 12 22 134 332 001 122 33 55 -13-14-14 000 101 04 17 -21.8 -22.2 28.96 13 23 141 339 003 122 31 51 -13-13-14 000 102 04 18 -22.1 -22.6 28.96 13 23 145 343 000 122 32 48 -13-13-14 000 103 04 19 -21.8 -22.9 28.95 14 24 149 348 -003 114 33 44 -13-13-13 000 104 04 20 -21.7 -23.3 28.95 14 25 151 349 -001 107 45 45 -13-13-14 000 105 04 21 -21.8 -23.5 28.94 15 27 149 347 000 107 47 43 -13-13-13 000 106 04 22 -21.6 -24.4 28.93 15 28 150 349 000 93 38 46 -13-13-13 000 107 04 23 -22.0 -25.0 28.93 15 28 158 356 000 92 30 34 -13-13-13 000 108 05 00 -22.4 -25.3 28.92 15 28 161 359 002 94 43 39 -13-13-13 000 109 05 01 -22.1 -25.6 28.91 15 28 162 1 000 88 47 37 -13-13-14 000 110 05 02 -22.2 -25.4 28.90 15 27 163 1 000 90 40 37 -13-14-14 000 111 05 03 -22.6 -25.2 28.88 14 25 172 10 -001 97 34 39 -13-13-14 000 112 05 04 -23.1 -25.5 28.86 14 24 180 19 -001 101 34 41 -14-13-14 000 113 05 05 -23.4 -24.9 28.85 14 27 183 21 000 111 31 50 -14-13-13 000 114 05 06 -23.6 -26.4 28.83 15 28 182 21 001 96 34 60 -14-13-14 000 115 05 07 -24.1 -26.9 28.81 14 28 186 24 -001 96 56 59 -14-13-13 000 116 05 08 -24.1 -26.5 28.80 14 30 191 29 -002 101 61 57 -14-14-14 000 117 05 09 -23.6 -25.0 28.78 14 29 193 32 002 114 61 58 -14-14-14 000 118 05 10 -23.9 -24.7 28.76 14 29 198 36 000 121 57 65 -14-13-13 000 119 05 11 -24.2 -24.8 28.74 15 30 202 41 003 124 58 66 -15-14-13 000 120 05 12 -24.1 -24.7 28.72 16 30 202 41 002 124 62 60 -16-14-14 000 * 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.