USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2025-12-23/12 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 23 12 -15.0 -16.6 29.09 5 12 210 49 000 83 83 75 -12-13-13 000 1 23 13 -16.7 -17.3 29.10 9 14 187 25 000 115 70 59 -13-13-14 000 2 23 14 -17.5 -18.5 29.09 9 14 184 23 000 111 51 46 -13-13-13 000 3 23 15 -17.4 -18.6 29.11 9 15 178 16 000 108 52 46 -13-13-13 000 4 23 16 -16.9 -17.5 29.10 9 16 170 8 -002 116 60 45 -13-13-13 000 5 23 17 -16.1 -16.4 29.10 9 16 166 5 -001 116 58 45 -13-13-14 000 6 23 18 -15.3 -15.6 29.11 11 17 170 8 -002 116 43 44 -13-13-14 000 7 23 19 -15.0 -16.9 29.11 11 17 174 12 -001 97 49 42 -14-14-14 000 8 23 20 -15.0 -18.5 29.12 11 18 179 18 -005 83 53 43 -14-14-14 000 9 23 21 -15.2 -18.4 29.11 12 19 187 25 -008 86 55 44 -15-14-14 000 10 23 22 -15.4 -18.1 29.10 13 20 193 31 -008 90 56 46 -15-15-14 000 11 23 23 -15.7 -18.1 29.09 13 21 197 36 -007 93 58 37 -15-15-14 000 12 24 00 -16.0 -18.2 29.09 14 20 201 39 -008 97 60 39 -15-15-14 000 13 24 01 -16.3 -18.0 29.09 15 21 204 43 -005 102 63 43 -16-15-14 000 14 24 02 -16.2 -17.6 29.10 15 21 209 48 000 105 65 51 -16-15-15 000 15 24 03 -16.2 -17.3 29.10 13 19 213 52 -001 108 69 66 -16-15-15 000 16 24 04 -16.3 -16.6 29.09 14 18 215 53 -003 116 77 65 -17-16-16 000 17 24 05 -16.2 -16.5 29.08 14 19 215 53 -004 117 80 63 -17-16-16 000 18 24 06 -16.4 -16.7 29.06 14 19 215 53 -007 117 82 56 -17-17-16 000 19 24 07 -16.5 -16.8 29.04 14 19 214 53 -010 117 79 58 -18-16-16 000 20 24 08 -16.6 -16.9 29.04 14 18 215 53 -013 117 72 67 -18-16-16 000 21 24 09 -16.7 -17.0 29.03 13 18 213 51 -011 117 75 72 -18-16-16 000 22 24 10 -16.9 -17.2 29.02 13 16 210 49 000 117 69 68 -18-16-16 000 23 24 11 -17.1 -17.4 29.01 12 16 204 42 003 118 58 66 -17-15-15 000 24 24 12 -17.5 -17.8 29.00 12 16 197 35 001 118 50 61 -17-15-15 000 25 24 13 -17.8 -18.1 29.00 11 17 190 28 000 119 53 58 -16-15-15 000 26 24 14 -18.1 -18.4 29.01 10 17 187 26 000 119 65 55 -15-15-16 000 27 24 15 -18.2 -18.5 29.01 9 17 191 30 000 119 61 43 -15-15-15 000 28 24 16 -18.0 -18.4 29.00 9 17 193 32 001 119 63 37 -15-14-15 000 29 24 17 -17.4 -18.7 29.00 9 16 193 32 000 106 46 55 -14-14-15 000 30 24 18 -16.7 -19.2 29.00 8 15 187 26 000 94 39 48 -14-14-14 000 31 24 19 -15.8 -18.6 29.01 8 15 177 15 002 90 43 42 -13-14-14 000 32 24 20 -14.8 -17.4 29.01 8 13 160 358 001 91 54 35 -13-13-14 000 33 24 21 -14.1 -16.6 29.01 8 12 144 342 001 91 42 32 -13-13-13 000 34 24 22 -13.5 -16.4 29.02 8 11 126 324 002 88 35 31 -13-13-13 000 35 24 23 -13.3 -16.6 29.02 8 12 116 314 000 83 33 33 -13-13-13 000 36 25 00 -13.4 -17.6 29.03 9 12 109 307 000 76 31 36 -13-12-12 000 37 25 01 -13.4 -18.5 29.04 9 14 108 307 003 70 38 37 -13-12-12 000 38 25 02 -13.5 -18.3 29.05 9 13 119 317 001 71 53 36 -13-12-12 000 39 25 03 -13.7 -17.9 29.05 10 14 119 318 001 76 59 30 -12-12-12 000 40 25 04 -13.9 -17.0 29.06 10 16 116 314 003 86 35 30 -11-11-12 000 41 25 05 -14.3 -17.2 29.07 10 16 125 323 001 88 29 43 -11-11-12 000 42 25 06 -14.7 -17.6 29.07 10 18 129 327 000 87 33 43 -11-11-11 000 43 25 07 -15.0 -18.0 29.08 11 20 126 325 002 87 33 35 -11-10-11 000 44 25 08 -15.2 -18.2 29.08 12 20 124 322 001 87 37 37 -10-10-11 000 45 25 09 -15.5 -19.4 29.08 11 20 123 321 000 79 42 43 -10-10-11 000 46 25 10 -15.8 -20.2 29.09 11 19 123 322 000 73 44 50 -10-10-11 000 47 25 11 -15.7 -20.7 29.10 11 19 123 322 001 68 44 57 -10-10-10 000 48 25 12 -15.6 -20.9 29.10 10 18 125 323 001 66 44 63 -9 -9-10 000 49 25 13 -15.3 -21.1 29.11 10 18 127 325 000 61 46 66 -9 -9-10 000 50 25 14 -15.0 -21.0 29.12 10 18 127 326 000 59 50 65 -9 -9-10 000 51 25 15 -14.3 -20.6 29.13 11 18 126 324 000 58 47 63 -9 -9-10 000 52 25 16 -13.7 -19.8 29.13 10 18 126 324 000 59 31 56 -9 -9-10 000 53 25 17 -13.2 -19.0 29.13 9 16 125 324 001 61 39 56 -9 -9-10 000 54 25 18 -12.5 -18.0 29.13 9 16 127 325 001 63 48 58 -8 -9-10 000 55 25 19 -11.5 -17.0 29.14 8 14 127 325 000 63 51 63 -8 -8-10 000 56 25 20 -10.4 -15.9 29.15 7 13 124 323 001 64 50 70 -8 -8 -9 000 57 25 21 -9.5 -15.2 29.16 7 11 123 321 000 62 49 73 -7 -8 -9 000 58 25 22 -8.9 -14.7 29.16 6 9 126 325 001 62 49 67 -7 -8 -9 000 59 25 23 -8.7 -14.0 29.17 6 8 142 340 000 66 48 63 -7 -8 -9 000 60 26 00 -8.9 -13.7 29.18 6 7 158 356 001 69 48 62 -7 -8 -9 000 61 26 01 -8.7 -14.0 29.18 6 7 162 0 001 65 49 61 -7 -8 -9 000 62 26 02 -8.7 -14.4 29.18 5 8 162 0 000 61 50 60 -7 -7 -9 000 63 26 03 -8.9 -14.2 29.18 5 8 171 10 000 62 49 61 -7 -7 -8 000 64 26 04 -9.7 -15.0 29.18 6 9 180 18 000 62 47 61 -7 -7 -8 000 65 26 05 -10.3 -17.0 29.18 6 9 179 17 000 44 39 58 -7 -7 -8 000 66 26 06 -11.3 -18.4 29.18 6 9 190 29 001 43 37 51 -7 -7 -8 000 67 26 07 -12.1 -20.1 29.18 6 10 199 37 000 39 35 44 -7 -7 -8 000 68 26 08 -12.3 -21.8 29.18 6 9 202 40 000 35 33 42 -7 -7 -8 000 69 26 09 -12.8 -22.3 29.18 6 10 204 42 001 37 25 38 -7 -7 -8 000 70 26 10 -13.6 -22.3 29.18 6 10 208 47 000 39 20 33 -7 -7 -8 000 71 26 11 -14.2 -22.4 29.18 7 10 212 51 002 41 19 34 -7 -7 -8 000 72 26 12 -14.4 -19.8 29.18 7 11 214 52 004 60 28 33 -7 -7 -8 000 73 26 13 -14.1 -16.7 29.18 7 10 216 55 003 87 33 31 -8 -7 -8 000 74 26 14 -13.9 -15.3 29.18 7 10 218 56 000 100 32 34 -7 -7 -8 000 75 26 15 -13.2 -14.7 29.17 6 10 219 57 000 99 33 36 -8 -7 -8 000 76 26 16 -12.5 -14.3 29.17 6 10 224 62 001 96 35 32 -8 -8 -9 000 77 26 17 -11.9 -14.2 29.17 5 9 229 67 003 89 38 32 -8 -8 -9 000 78 26 18 -11.1 -14.1 29.17 5 8 229 68 004 80 40 34 -8 -8 -9 000 79 26 19 -10.4 -14.0 29.17 5 8 227 66 003 76 39 33 -8 -8 -9 000 80 26 20 -9.7 -13.6 29.17 4 8 225 63 002 76 38 34 -8 -8 -9 000 81 26 21 -9.2 -13.1 29.17 5 7 221 59 002 77 37 37 -8 -8 -9 000 82 26 22 -9.0 -13.1 29.18 5 7 220 58 002 75 36 37 -8 -8 -9 000 83 26 23 -8.9 -12.5 29.18 5 6 222 60 001 78 35 38 -7 -8 -9 000 84 27 00 -8.8 -12.1 29.19 5 6 222 61 002 81 35 38 -7 -8 -9 000 85 27 01 -8.8 -11.9 29.19 5 6 222 60 002 82 35 37 -7 -8 -9 000 86 27 02 -9.1 -12.1 29.19 5 6 220 58 002 83 35 37 -7 -8 -9 000 87 27 03 -9.5 -12.0 29.18 5 5 217 56 000 88 37 37 -7 -8 -9 000 88 27 04 -10.1 -12.1 29.18 4 5 215 54 -002 92 38 37 -7 -8 -9 000 89 27 05 -10.9 -12.8 29.18 4 5 215 53 -001 93 38 37 -7 -8 -9 000 90 27 06 -11.6 -13.6 29.18 4 5 212 50 000 92 38 37 -7 -8 -9 000 91 27 07 -11.5 -14.6 29.18 3 4 205 44 000 84 39 37 -7 -8 -9 000 92 27 08 -11.3 -15.7 29.19 3 4 198 36 000 75 40 37 -8 -8 -9 000 93 27 09 -11.3 -16.7 29.20 2 4 183 21 000 68 39 37 -8 -8 -9 000 94 27 10 -11.4 -18.0 29.20 2 3 156 355 000 61 36 36 -8 -8 -9 000 95 27 11 -11.7 -19.0 29.20 2 2 132 331 000 57 35 35 -8 -8 -9 000 96 27 12 -11.7 -19.6 29.20 1 2 128 327 000 54 34 35 -8 -8 -9 000 97 27 13 -11.6 -19.9 29.20 0 1 121 320 000 52 34 35 -8 -8 -9 000 98 27 14 -11.5 -19.9 29.20 0 1 53 251 000 51 34 36 -8 -8 -9 000 99 27 15 -11.2 -19.5 29.20 0 1 343 181 000 52 35 36 -8 -8 -9 000 100 27 16 -10.9 -19.2 29.20 0 1 203 41 000 52 35 36 -8 -8 -9 000 101 27 17 -10.5 -18.4 29.21 0 1 138 336 000 54 34 35 -8 -8 -9 000 102 27 18 -9.9 -17.0 29.21 0 2 118 317 000 57 34 34 -8 -8 -9 000 103 27 19 -9.3 -16.3 29.22 1 2 124 322 000 57 34 34 -8 -8 -9 000 104 27 20 -8.9 -14.3 29.22 2 3 115 314 000 56 35 33 -8 -8 -9 000 105 27 21 -8.6 -13.9 29.23 2 3 92 290 000 68 35 33 -7 -8 -9 000 106 27 22 -8.5 -13.2 29.23 2 3 87 285 000 71 36 34 -7 -8 -9 000 107 27 23 -8.4 -11.9 29.24 2 2 81 280 000 80 36 34 -7 -8 -9 000 108 28 00 -8.2 -11.2 29.24 2 2 81 280 000 84 37 33 -7 -8 -9 000 109 28 01 -8.3 -10.8 29.24 2 2 91 289 000 87 37 32 -7 -8 -9 000 110 28 02 -8.3 -10.9 29.25 1 2 108 306 000 86 35 32 -7 -8 -9 000 111 28 03 -8.4 -11.2 29.25 1 2 112 310 000 85 34 32 -7 -8 -8 000 112 28 04 -9.0 -11.7 29.24 2 2 113 311 000 83 34 31 -7 -8 -8 000 113 28 05 -9.4 -13.8 29.24 2 2 125 324 000 74 33 29 -7 -8 -8 000 114 28 06 -9.6 -17.5 29.24 3 4 124 323 000 53 32 28 -7 -8 -8 000 115 28 07 -9.8 -19.3 29.25 3 5 118 317 000 45 31 28 -7 -7 -8 000 116 28 08 -10.1 -20.1 29.25 4 5 112 310 000 43 30 27 -7 -7 -8 000 117 28 09 -10.3 -20.7 29.26 3 5 105 303 000 42 29 26 -7 -7 -8 000 118 28 10 -10.7 -20.5 29.26 4 5 104 302 000 44 29 25 -7 -7 -8 000 119 28 11 -10.9 -20.8 29.26 3 5 104 302 001 44 29 24 -7 -7 -8 000 120 28 12 -10.8 -20.8 29.26 3 4 108 306 000 44 29 24 -7 -7 -8 000 * 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.