USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2025-09-19/12 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 19 12 -22.4 -25.0 28.12 5 5 275 114 000 96 98 93 -14-14-14 000 1 19 13 -22.6 -22.9 28.13 6 7 271 110 000 122104 95 -15-14-14 000 2 19 14 -23.4 -23.7 28.13 7 9 267 106 001 122102 97 -14-14-14 000 3 19 15 -25.0 -25.6 28.16 9 12 263 101 000 126107 98 -14-14-14 000 4 19 16 -23.2 -23.8 28.17 8 12 253 91 002 125110 97 -15-14-15 000 5 19 17 -21.7 -22.2 28.16 8 11 248 86 002 123110 95 -14-14-15 000 6 19 18 -20.9 -21.5 28.20 7 10 241 79 001 122110 98 -15-15-15 000 7 19 19 -20.4 -20.9 28.19 6 9 244 82 001 121108 97 -16-15-15 000 8 19 20 -19.7 -20.3 28.22 4 7 236 74 000 120105 97 -16-15-15 000 9 19 21 -19.1 -19.4 28.24 4 6 239 77 000 120108100 -17-15-15 000 10 19 22 -18.8 -19.1 28.26 6 7 256 94 000 120108100 -20-15-15 000 11 19 23 -18.9 -19.5 28.29 7 10 262 101 000 117108101 -19-15-15 000 12 20 00 -19.0 -20.2 28.30 8 11 266 104 -001 110119105 -19-18-15 000 13 20 01 -19.5 -21.0 28.33 8 11 278 116 000 107120110 -19-19-16 000 14 20 02 -19.9 -21.6 28.36 7 9 275 113 001 105120118 -19-19-17 000 15 20 03 -20.1 -22.2 28.39 5 6 284 123 000 102112120 -18-18-19 000 16 20 04 -20.3 -22.5 28.43 4 5 303 142 000 100110120 -18-19-18 001 17 20 05 -20.3 -22.6 28.45 4 6 324 163 000 100107120 -19-18-17 002 18 20 06 -20.9 -22.9 28.47 5 9 321 160 000 104104116 -19-18-17 002 19 20 07 -22.3 -23.4 28.50 7 13 292 130 000 118103117 -18-18-18 002 20 20 08 -23.4 -23.9 28.53 9 17 281 120 000 125102114 -18-18-18 000 21 20 09 -24.9 -25.5 28.56 11 17 279 117 000 126102110 -18-18-18 000 22 20 10 -25.5 -26.0 28.60 11 17 269 108 000 127105114 -19-18-18 000 23 20 11 -25.1 -25.6 28.63 11 17 269 107 001 126105113 -19-19-18 000 24 20 12 -24.5 -25.1 28.66 10 16 268 106 000 126100113 -19-19-19 000 25 20 13 -24.5 -25.1 28.71 10 16 271 110 000 126 97114 -19-19-19 000 26 20 14 -25.2 -28.8 28.74 11 18 270 108 -001 89 97115 -19-19-19 000 27 20 15 -26.2 -31.0 28.77 11 18 267 105 000 76 86116 -20-19-19 000 28 20 16 -26.4 -33.2 28.79 10 15 264 103 000 58 75116 -21-19-19 000 29 20 17 -27.3 -33.6 28.81 10 15 253 92 000 62 74121 -21-19-19 000 30 20 18 -27.4 -34.9 28.85 10 15 243 82 000 51 76117 -21-19-19 000 31 20 19 -27.3 -35.1 28.87 10 14 236 74 000 47 72110 -21-19-20 000 32 20 20 -27.3 -35.3 28.89 9 13 232 71 000 44 67106 -21-19-20 000 33 20 21 -27.3 -34.9 28.90 8 11 236 74 000 47 65110 -21-19-20 000 34 20 22 -26.9 -34.6 28.91 7 10 232 70 001 47 61107 -21-20-21 000 35 20 23 -26.6 -34.4 28.93 6 9 231 69 000 49 57 97 -21-21-21 000 36 21 00 -26.1 -34.4 28.94 5 7 232 70 000 49 56 87 -20-21-21 000 37 21 01 -25.5 -34.1 28.96 4 6 224 62 000 52 54 70 -21-22-21 000 38 21 02 -25.4 -33.1 28.96 2 4 213 52 000 57 54 53 -21-22-21 000 39 21 03 -25.5 -33.2 28.96 1 4 174 13 000 57 55 37 -22-21-21 000 40 21 04 -25.9 -34.1 28.97 2 7 16 214 000 54 54 38 -22-21-22 000 41 21 05 -26.4 -33.3 28.98 4 8 351 190 000 63 54 37 -21-21-22 000 42 21 06 -27.0 -31.7 28.99 5 9 342 180 000 79 54 26 -21-21-22 000 43 21 07 -28.0 -29.8 29.00 6 9 339 178 000 105 53 43 -21-22-22 000 44 21 08 -27.6 -31.0 29.00 6 9 344 182 000 89 53 62 -22-22-22 000 45 21 09 -27.1 -31.9 29.00 5 8 359 198 000 78 53 62 -22-22-21 000 46 21 10 -26.9 -33.3 29.00 5 8 19 217 000 66 58 92 -22-21-21 000 47 21 11 -26.9 -33.3 29.00 5 8 30 228 000 66 64 94 -21-20-21 000 48 21 12 -26.9 -32.7 29.00 4 8 42 241 000 71 75 94 -21-20-21 000 49 21 13 -26.9 -31.7 29.00 5 8 51 249 000 79 92 98 -20-20-21 000 50 21 14 -27.1 -30.4 29.00 5 9 54 252 000 91100101 -20-20-21 000 51 21 15 -27.2 -30.2 29.00 6 9 47 245 000 93100101 -20-20-21 000 52 21 16 -26.9 -29.6 29.00 5 9 38 237 000 97 76103 -20-20-21 000 53 21 17 -26.8 -28.9 29.00 5 9 32 231 000 103 89102 -20-21-21 000 54 21 18 -26.5 -28.1 28.99 5 10 32 230 000 108 97108 -21-21-21 000 55 21 19 -27.1 -29.0 28.99 6 11 31 230 000 106 99108 -21-20-21 000 56 21 20 -27.0 -29.6 28.98 6 11 33 231 001 98 99110 -20-20-20 000 57 21 21 -26.6 -29.8 28.98 6 10 39 238 001 91103107 -20-20-20 000 58 21 22 -26.4 -29.8 28.97 6 10 51 249 000 89101105 -20-20-20 000 59 21 23 -26.3 -29.6 28.97 7 11 63 261 000 90100101 -20-19-20 000 60 22 00 -26.2 -29.6 28.96 8 11 72 270 000 89 98102 -19-19-19 000 61 22 01 -25.7 -29.1 28.95 8 12 79 277 001 90 97102 -19-19-19 000 62 22 02 -25.3 -28.0 28.94 9 12 86 284 002 99 94105 -19-18-19 000 63 22 03 -25.3 -27.1 28.92 9 13 93 291 001 109 91104 -18-18-18 001 64 22 04 -25.6 -27.0 28.90 10 14 94 292 001 114 91101 -19-18-18 000 65 22 05 -25.9 -26.9 28.89 10 15 100 298 002 121 88 99 -19-18-18 000 66 22 06 -26.1 -26.6 28.88 11 17 101 300 002 127 84 96 -19-17-18 000 67 22 07 -25.8 -26.5 28.87 11 18 103 301 -002 124 82 94 -18-17-17 000 68 22 08 -25.6 -26.5 28.86 12 19 104 303 000 122 80 91 -18-17-17 000 69 22 09 -25.4 -26.6 28.84 12 20 104 302 002 117 76 85 -18-17-17 000 70 22 10 -25.2 -25.8 28.82 13 22 104 303 001 124 71 78 -18-17-16 000 71 22 11 -25.1 -25.5 28.80 14 23 105 303 000 127 68 73 -18-17-16 000 72 22 12 -25.2 -25.6 28.78 15 25 107 305 000 127 65 74 -19-17-16 000 73 22 13 -25.3 -25.7 28.77 15 25 109 308 000 127 62 73 -18-17-16 000 74 22 14 -25.1 -25.5 28.75 15 26 110 308 000 127 64 70 -18-17-16 000 75 22 15 -25.0 -25.5 28.73 15 27 113 311 001 127 64 65 -19-17-16 000 76 22 16 -25.2 -25.6 28.72 16 28 115 314 000 127 63 62 -19-17-17 000 77 22 17 -25.2 -25.7 28.71 16 28 118 316 000 127 61 57 -19-17-17 000 78 22 18 -24.9 -25.3 28.69 16 27 122 320 001 126 57 55 -18-17-17 000 79 22 19 -24.4 -25.2 28.67 16 27 126 324 000 122 54 53 -18-17-16 000 80 22 20 -24.0 -24.9 28.66 15 27 128 326 000 119 52 54 -18-16-16 000 81 22 21 -23.6 -24.6 28.65 14 25 131 329 001 118 51 56 -18-16-16 000 82 22 22 -23.2 -24.1 28.63 14 24 135 333 001 120 50 56 -18-16-16 000 83 22 23 -23.2 -23.8 28.62 14 24 138 336 000 122 49 55 -18-16-16 000 84 23 00 -23.0 -23.8 28.61 14 24 139 337 -001 121 48 55 -17-16-16 000 85 23 01 -23.0 -23.8 28.60 14 24 140 339 -001 121 48 54 -17-16-16 000 86 23 02 -23.1 -23.9 28.58 13 24 140 338 000 121 48 53 -17-16-16 000 87 23 03 -23.3 -24.1 28.57 13 24 139 338 001 120 46 52 -17-16-16 000 88 23 04 -23.2 -24.0 28.55 13 23 140 338 000 121 44 53 -17-16-16 000 89 23 05 -22.9 -23.8 28.53 13 22 139 337 000 118 43 50 -16-16-16 000 90 23 06 -22.8 -23.9 28.52 12 21 137 335 000 116 42 49 -16-15-16 000 91 23 07 -23.0 -24.1 28.51 12 21 138 336 000 116 39 48 -16-15-15 000 92 23 08 -23.0 -24.6 28.50 12 21 137 336 000 110 34 48 -16-15-15 000 93 23 09 -22.8 -24.7 28.49 12 21 140 338 000 106 32 47 -16-15-15 000 94 23 10 -22.7 -25.1 28.47 12 21 138 336 001 99 34 44 -15-15-15 000 95 23 11 -22.6 -26.1 28.47 12 21 137 335 000 88 36 39 -16-15-15 000 96 23 12 -22.8 -27.0 28.46 11 20 138 336 000 80 33 33 -15-15-15 000 97 23 13 -22.8 -26.4 28.45 11 20 140 339 -001 86 32 28 -15-15-15 000 98 23 14 -22.9 -25.4 28.44 11 20 145 343 -001 98 30 26 -15-15-15 000 99 23 15 -23.2 -25.2 28.43 11 20 147 345 000 104 24 25 -15-15-15 000 100 23 16 -23.1 -25.0 28.43 11 20 147 345 000 104 22 24 -15-15-15 000 101 23 17 -22.7 -24.6 28.42 11 20 145 343 000 105 37 22 -15-15-15 000 102 23 18 -22.5 -24.6 28.42 11 20 142 340 000 101 33 21 -14-14-15 000 103 23 19 -22.3 -24.6 28.42 12 20 141 339 000 100 24 20 -15-14-15 000 104 23 20 -22.0 -25.2 28.42 12 21 141 340 000 89 24 21 -15-14-15 000 105 23 21 -21.4 -25.9 28.42 12 21 141 339 000 76 28 21 -15-14-15 000 106 23 22 -21.0 -25.0 28.43 11 20 146 344 000 81 37 20 -15-15-15 000 107 23 23 -21.3 -24.8 28.43 11 19 155 354 002 86 39 19 -15-15-15 000 108 24 00 -21.6 -24.2 28.44 10 17 158 356 000 95 42 20 -15-15-15 000 109 24 01 -21.8 -24.0 28.44 10 16 160 358 000 101 42 20 -15-15-15 000 110 24 02 -22.4 -24.3 28.45 9 14 165 4 001 103 43 18 -15-15-15 000 111 24 03 -22.8 -24.7 28.45 8 12 170 8 000 102 43 16 -14-14-15 000 112 24 04 -22.6 -24.7 28.45 7 10 175 14 000 96 41 14 -14-14-15 000 113 24 05 -21.5 -24.4 28.46 6 8 182 20 000 89 41 13 -14-14-15 000 114 24 06 -20.6 -24.7 28.46 4 6 188 27 000 80 42 13 -14-14-15 000 115 24 07 -20.2 -25.3 28.47 2 3 198 36 000 72 43 15 -14-14-15 000 116 24 08 -19.9 -25.5 28.48 2 4 246 84 001 67 45 19 -14-15-15 000 117 24 09 -20.5 -25.4 28.49 3 7 300 138 000 73 45 21 -15-15-15 000 118 24 10 -22.3 -25.6 28.50 6 9 303 141 000 86 46 21 -14-15-15 000 119 24 11 -23.0 -26.5 28.51 9 10 291 129 000 81 43 29 -14-14-14 000 120 24 12 -23.1 -27.0 28.52 9 11 287 126 000 78 42 32 -14-14-15 000 * 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.