USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-05-03/00 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 03 00 -17.0 -20.4 28.50 11 31 40 239 000 67 70 78 -16-17-18 000 1 03 01 -20.1 -21.2 28.49 17 33 44 242 024 112 83 82 -17-18-19 000 2 03 02 -21.6 -22.0 28.51 16 30 43 242 032 122 89 88 -18-18-19 000 3 03 03 -22.7 -23.2 28.54 10 22 45 243 000 124112 83 -18-19-19 000 4 03 04 -23.2 -23.9 28.56 7 17 70 268 004 124121 87 -19-20-20 000 5 03 05 -21.7 -22.3 28.58 9 15 68 267 -001 123122 81 -19-20-19 000 6 03 06 -23.2 -23.7 28.60 10 16 81 279 -002 124106 74 -19-19-18 000 7 03 07 -23.8 -24.4 28.59 10 16 76 274 -002 125 90 77 -19-18-18 000 8 03 08 -23.9 -24.5 28.59 9 14 74 273 -003 125 89 69 -18-18-18 000 9 03 09 -24.1 -24.7 28.60 8 13 75 273 000 124 84 66 -18-17-18 000 10 03 10 -24.2 -24.7 28.63 7 14 80 278 001 124 69 68 -18-17-17 000 11 03 11 -24.3 -24.8 28.64 7 11 86 284 -002 124 76 74 -17-17-17 000 12 03 12 -23.1 -23.4 28.64 5 7 89 288 -008 123 93 72 -16-16-17 000 13 03 13 -21.0 -21.5 28.66 3 4 152 351 000 115 93 82 -16-17-18 000 14 03 14 -21.4 -21.7 28.67 4 9 121 319 000 117 95 82 -17-17-18 000 15 03 15 -20.5 -21.8 28.69 2 11 104 303 000 104 91 79 -16-17-18 000 16 03 16 -19.8 -21.7 28.70 2 12 78 276 -001 97 88 82 -16-17-18 000 17 03 17 -20.4 -21.6 28.70 3 11 82 280 000 104 94 86 -16-18-18 000 18 03 18 -21.2 -21.3 28.72 4 11 49 247 -002 117 93 86 -17-18-18 000 19 03 19 -21.5 -21.6 28.73 5 12 32 230 -005 119 87 88 -17-18-18 000 20 03 20 -22.2 -22.2 28.76 4 9 30 229 -009 122102 84 -17-18-18 000 21 03 21 -22.3 -22.3 28.78 5 9 17 216 -004 122 95 90 -17-18-18 000 22 03 22 -24.7 -24.8 28.79 7 12 5 204 -002 124100 99 -18-18-18 000 23 03 23 -25.2 -25.6 28.80 7 14 4 202 000 125 96 94 -18-19-18 000 24 04 00 -25.8 -26.4 28.82 9 15 351 189 000 127 76 91 -19-18-18 000 25 04 01 -23.8 -24.3 28.85 9 17 345 183 -001 125 71 82 -20-18-18 000 26 04 02 -23.2 -23.8 28.86 9 18 359 198 -006 124 71 79 -22-18-18 000 27 04 03 -23.3 -23.9 28.89 9 18 4 202 -010 125 79 83 -22-19-18 000 28 04 04 -24.4 -25.0 28.91 10 17 5 203 -007 126 85 71 -21-20-18 000 29 04 05 -24.1 -24.7 28.93 9 15 6 204 -010 126 82 62 -21-20-19 000 30 04 06 -25.0 -25.6 28.95 9 15 2 200 -006 127 86 64 -21-19-19 000 31 04 07 -24.6 -25.2 28.96 9 13 3 201 -004 126 85 69 -20-18-19 000 32 04 08 -25.2 -25.9 28.97 7 11 5 204 -003 127 82 75 -19-18-19 000 33 04 09 -26.5 -27.2 28.98 5 8 359 198 -003 128 84 75 -19-19-19 000 34 04 10 -25.8 -26.0 29.00 5 10 0 199 -003 127 85 71 -19-19-19 000 35 04 11 -24.1 -24.1 29.01 3 7 31 229 -001 125 89 71 -19-19-20 000 36 04 12 -23.3 -23.3 29.03 1 5 70 268 002 122 90 74 -19-19-20 000 37 04 13 -23.5 -23.5 29.04 3 5 95 293 003 124 88 80 -19-19-20 000 38 04 14 -25.0 -25.0 29.05 6 7 137 336 -001 125 91 81 -19-19-20 000 39 04 15 -25.2 -25.3 29.05 7 9 148 346 000 124 83 84 -18-19-20 000 40 04 16 -25.0 -25.3 29.04 9 12 158 356 000 124 83 97 -18-18-19 000 41 04 17 -25.0 -25.5 29.04 10 15 160 358 000 125 76100 -18-18-19 000 42 04 18 -24.8 -25.3 29.02 11 17 164 2 000 125 98101 -18-18-19 000 43 04 19 -24.6 -25.1 29.01 11 18 167 6 -001 125 98113 -18-18-18 000 44 04 20 -25.3 -25.8 29.00 13 23 171 10 000 127105106 -19-18-18 000 45 04 21 -26.3 -26.8 28.98 12 22 171 9 001 128 81 84 -18-17-18 000 46 04 22 -26.5 -27.0 28.98 12 22 164 3 000 129 84 82 -18-17-17 000 47 04 23 -26.6 -27.1 28.98 13 24 165 4 000 129 99 80 -18-17-17 000 48 05 00 -26.4 -26.9 28.97 12 23 170 9 000 128111 76 -18-17-17 000 49 05 01 -25.8 -26.3 28.95 13 26 176 14 000 127115 97 -18-17-17 000 50 05 02 -24.5 -25.0 28.94 12 26 180 18 000 126119 95 -18-18-18 000 51 05 03 -25.3 -25.9 28.92 13 23 187 26 000 127112106 -18-17-18 000 52 05 04 -25.5 -26.0 28.91 12 22 194 32 001 127114 96 -18-17-17 000 53 05 05 -25.2 -25.7 28.89 12 20 204 43 001 127111 97 -18-17-17 000 54 05 06 -25.6 -26.1 28.87 12 19 215 54 001 127108 83 -18-17-17 001 55 05 07 -25.6 -26.1 28.85 13 19 217 56 001 128 86 91 -18-16-16 000 56 05 08 -26.0 -26.5 28.82 11 15 223 61 003 128 79 79 -18-15-15 000 57 05 09 -26.4 -27.0 28.79 10 15 223 61 000 129 75 57 -18-15-15 000 58 05 10 -26.1 -26.8 28.77 9 14 216 54 001 127 74 50 -17-15-15 000 59 05 11 -25.4 -26.0 28.75 9 14 211 49 000 126 73 24 -16-14-15 000 60 05 12 -25.1 -25.7 28.72 9 13 206 45 000 125 79 21 -15-15-15 000 61 05 13 -25.1 -25.5 28.71 8 12 193 32 001 125 75 27 -14-14-14 000 62 05 14 -25.2 -25.8 28.69 8 13 181 20 000 125 58 24 -14-14-14 000 63 05 15 -22.5 -23.4 28.67 9 15 166 4 000 118 24 27 -15-14-14 000 64 05 16 -23.3 -23.7 28.65 10 18 161 359 -001 123 23 33 -14-14-14 000 65 05 17 -22.3 -23.4 28.64 12 19 163 2 001 113 23 38 -14-14-14 000 66 05 18 -21.6 -23.4 28.62 12 21 169 8 000 106 22 38 -15-13-14 000 67 05 19 -21.4 -25.9 28.60 12 22 171 9 000 77 24 56 -15-13-13 000 68 05 20 -22.2 -27.1 28.59 12 22 177 15 -001 74 31 60 -15-13-13 000 69 05 21 -23.4 -27.5 28.58 12 21 183 21 -002 81 37 56 -15-14-13 000 70 05 22 -23.4 -27.4 28.57 11 19 189 28 -001 82 37 58 -15-13-13 000 71 05 23 -23.5 -26.8 28.57 10 18 198 36 -007 89 40 69 -15-13-13 000 72 06 00 -23.6 -25.6 28.56 10 17 201 40 000 105 48 61 -15-12-12 000 73 06 01 -23.1 -24.4 28.55 10 16 202 40 -003 114 57 58 -14-12-12 000 74 06 02 -23.9 -24.4 28.53 10 15 207 45 000 124 65 56 -14-12-12 000 75 06 03 -23.9 -24.5 28.52 9 14 204 43 000 124 68 59 -13-12-12 000 76 06 04 -23.9 -24.3 28.52 8 13 206 45 -001 123 70 63 -13-12-13 000 77 06 05 -23.4 -23.8 28.50 9 13 201 39 000 122 68 67 -13-12-12 000 78 06 06 -23.4 -23.9 28.49 8 13 197 35 004 123 56 68 -13-11-12 000 79 06 07 -22.9 -23.2 28.48 7 11 188 26 000 122 56 75 -13-12-12 000 80 06 08 -21.8 -21.9 28.48 6 9 181 20 001 121 57 80 -13-11-12 000 81 06 09 -21.9 -21.9 28.47 6 9 184 22 002 121 61 74 -12-11-12 000 82 06 10 -21.8 -21.9 28.46 7 9 174 12 -002 121 62 74 -12-12-12 000 83 06 11 -22.6 -22.8 28.46 7 9 158 357 -001 121 60 77 -12-11-11 000 84 06 12 -22.3 -22.4 28.45 6 9 132 331 000 121 61 74 -12-11-11 000 85 06 13 -21.3 -23.0 28.44 7 9 107 305 000 99 75 56 -12-12-12 000 86 06 14 -21.5 -22.9 28.44 8 11 98 296 -001 104 71 57 -12-12-12 000 87 06 15 -20.3 -21.6 28.43 6 9 87 285 000 104 62 57 -12-11-12 000 88 06 16 -19.1 -20.0 28.43 5 7 82 281 003 108 59 54 -12-11-12 000 89 06 17 -18.0 -18.6 28.42 3 7 81 279 002 108 57 55 -11-11-12 000 90 06 18 -18.2 -18.2 28.42 5 8 89 287 000 115 56 54 -11-11-12 000 91 06 19 -17.3 -18.2 28.40 4 7 81 279 002 104 53 54 -11-11-11 000 92 06 20 -16.7 -18.4 28.39 2 5 81 280 003 96 52 52 -11-11-11 000 93 06 21 -16.7 -18.7 28.39 1 4 326 165 006 92 54 51 -11-11-11 000 94 06 22 -17.1 -19.0 28.38 0 1 215 53 -005 93 62 49 -12-12-12 000 95 06 23 -18.0 -18.9 28.39 2 4 140 338 -001 104 62 51 -12-12-12 000 96 07 00 -18.5 -18.6 28.38 5 5 132 331 000 113 58 56 -12-12-12 000 97 07 01 -17.1 -19.1 28.37 0 1 352 190 002 92 56 57 -11-12-12 000 98 07 02 -17.4 -19.2 28.35 2 3 306 145 000 94 57 51 -11-12-12 000 99 07 03 -18.5 -19.3 28.34 5 6 307 145 000 106 54 48 -11-11-12 000 100 07 04 -20.1 -20.5 28.33 7 8 291 130 002 110 54 47 -11-11-12 000 101 07 05 -20.7 -20.7 28.33 7 10 258 96 -001 117 56 48 -12-12-12 000 102 07 06 -21.4 -21.6 28.32 7 10 258 96 000 120 56 46 -12-12-12 000 103 07 07 -20.7 -20.8 28.32 8 11 269 108 000 119 57 48 -12-12-12 000 104 07 08 -20.7 -20.9 28.32 9 11 281 120 -001 119 56 52 -12-12-12 000 105 07 09 -20.8 -21.1 28.32 10 12 291 130 -001 119 58 62 -12-12-13 000 106 07 10 -20.4 -20.8 28.32 10 15 303 142 003 119 60 69 -12-13-13 000 107 07 11 -19.7 -20.1 28.31 11 17 301 140 000 119 65 73 -12-13-14 000 108 07 12 -21.5 -22.0 28.32 12 20 311 149 -005 122 66 68 -13-13-14 000 109 07 13 -25.1 -25.5 28.33 16 24 323 162 -003 127 69 70 -12-13-14 000 110 07 14 -23.3 -23.8 28.34 19 27 333 171 -003 125 69 79 -21-13-15 000 111 07 15 -22.6 -23.0 28.35 21 28 339 177 -002 124 76 89 -23-13-14 000 112 07 16 -22.1 -22.5 28.36 21 30 339 178 -009 124107 90 -22-17-14 000 113 07 17 -21.7 -22.1 28.37 22 30 340 178 -008 123115 87 -22-18-14 000 114 07 18 -21.6 -22.4 28.38 20 28 338 176 -004 117122 87 -22-21-14 000 115 07 19 -21.9 -23.1 28.40 19 28 340 178 000 114124 94 -22-22-16 000 116 07 20 -21.9 -23.2 28.42 18 28 341 180 -002 113125 94 -22-23-18 000 117 07 21 -22.8 -23.9 28.43 19 30 343 181 001 116123 96 -23-23-20 001 118 07 22 -23.0 -24.4 28.45 20 33 346 185 -002 113118 99 -23-24-21 001 119 07 23 -22.9 -24.5 28.46 23 34 349 187 -003 110125103 -23-24-21 002 120 08 00 -23.2 -24.9 28.48 24 35 350 188 -001 109125105 -24-25-21 002 * 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.