USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-01-31/12 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 31 12 -4.4 -5.1 28.81 13 22 42 240 000 95 93 90 -5 -6 -6 000 1 31 13 -6.1 -6.2 28.81 17 25 32 230 002 106107100 -6 -7 -7 010 2 31 14 -6.1 -6.2 28.83 17 24 32 231 -002 106107 99 -7 -7 -7 006 3 31 15 -6.2 -6.3 28.84 16 24 31 230 -005 106107 97 -7 -7 -7 005 4 31 16 -6.3 -6.4 28.85 16 24 31 229 -010 106107 96 -7 -7 -7 004 5 31 17 -6.3 -6.4 28.86 16 23 25 223 -017 106108 96 -7 -8 -8 003 6 31 18 -6.2 -6.4 28.87 16 22 22 220 -020 105108 98 -7 -8 -7 003 7 31 19 -5.9 -6.1 28.88 15 21 34 232 -011 105108105 -7 -8 -8 003 8 31 20 -5.9 -6.5 28.89 14 21 28 227 -009 101108 98 -7 -8 -8 006 9 31 21 -5.9 -6.3 28.91 15 21 25 224 -012 103108 96 -7 -8 -8 005 10 31 22 -5.6 -6.0 28.91 14 20 35 234 -009 103108100 -7 -8 -8 004 11 31 23 -5.4 -5.8 28.91 14 18 49 247 -007 102107102 -6 -7 -7 001 12 01 00 -5.0 -5.4 28.91 14 19 65 263 -008 102107 98 -6 -7 -8 001 13 01 01 -4.9 -4.9 28.90 15 19 66 264 -015 105107100 -6 -7 -8 000 14 01 02 -4.7 -5.5 28.91 14 17 58 257 -021 98107 97 -6 -7 -8 002 15 01 03 -4.6 -5.1 28.91 12 18 63 261 -011 100107100 -6 -7 -8 010 16 01 04 -4.9 -5.5 28.90 14 17 69 268 -011 100107100 -6 -7 -8 017 17 01 05 -5.2 -5.6 28.91 13 16 66 264 -032 102107109 -6 -7 -8 003 18 01 06 -4.9 -5.0 28.90 13 18 55 253 -005 105107108 -6 -7 -8 013 19 01 07 -5.5 -5.8 28.90 14 20 53 251 003 103107102 -6 -7 -8 016 20 01 08 -5.5 -5.6 28.89 16 22 48 247 -004 105105 96 -6 -7 -8 025 21 01 09 -5.4 -5.8 28.88 19 25 40 239 -004 103107 90 -6 -7 -8 038 22 01 10 -5.4 -5.7 28.88 19 27 34 233 -006 103107 96 -6 -7 -8 040 23 01 11 -5.5 -5.6 28.87 19 26 31 229 000 105107105 -6 -7 -8 018 24 01 12 -5.6 -5.7 28.87 18 23 31 229 -005 105107100 -6 -7 -8 018 25 01 13 -5.5 -5.7 28.88 15 20 27 226 -008 105107106 -6 -6 -7 014 26 01 14 -5.5 -5.6 28.89 13 19 30 228 000 105106 96 -6 -6 -7 010 27 01 15 -5.4 -5.5 28.89 12 17 33 231 000 105106 98 -6 -6 -7 011 28 01 16 -5.1 -5.2 28.88 12 17 32 231 000 105106107 -6 -6 -7 012 29 01 17 -4.7 -4.8 28.88 12 17 29 227 -001 104106 99 -5 -6 -7 013 30 01 18 -4.3 -4.3 28.88 13 17 20 219 000 104106103 -5 -6 -7 014 31 01 19 -4.0 -4.1 28.88 13 17 20 219 001 104106110 -5 -6 -7 016 32 01 20 -3.8 -3.9 28.88 14 18 20 218 -003 104106110 -5 -6 -7 017 33 01 21 -3.7 -3.7 28.88 14 19 19 217 -001 103106110 -5 -6 -7 016 34 01 22 -3.7 -3.8 28.87 13 19 18 217 003 104 99110 -5 -6 -7 005 35 01 23 -3.7 -4.0 28.87 13 16 20 219 -001 101100110 -5 -6 -7 007 36 02 00 -3.8 -3.8 28.86 13 16 22 221 -005 104103110 -5 -5 -7 021 37 02 01 -3.8 -3.8 28.86 12 14 24 222 -006 104106110 -5 -6 -7 009 38 02 02 -3.9 -4.0 28.85 11 13 29 227 -002 104106105 -5 -6 -7 011 39 02 03 -4.2 -4.2 28.84 11 12 33 231 -001 104106105 -5 -6 -7 020 40 02 04 -4.4 -4.5 28.83 10 15 27 226 -003 104106108 -5 -6 -7 012 41 02 05 -4.3 -4.4 28.82 10 14 38 236 -005 104106108 -5 -6 -7 011 42 02 06 -4.2 -4.3 28.82 11 15 54 252 -002 104106108 -5 -6 -7 009 43 02 07 -4.2 -4.2 28.81 10 15 53 251 -003 104106108 -5 -5 -6 008 44 02 08 -3.9 -4.0 28.80 10 15 46 245 -003 104105107 -4 -5 -6 005 45 02 09 -4.0 -4.0 28.79 8 12 51 250 -004 104105101 -4 -5 -6 001 46 02 10 -3.8 -4.1 28.79 6 9 67 265 -006 101102 99 -4 -5 -6 013 47 02 11 -3.8 -4.2 28.77 6 10 93 291 -008 100100102 -4 -4 -5 047 48 02 12 -3.4 -3.7 28.75 6 10 95 293 -008 101104100 -3 -4 -5 043 49 02 13 -3.1 -3.2 28.76 8 12 74 272 -008 102102 97 -3 -4 -5 046 50 02 14 -3.0 -3.1 28.76 8 11 51 250 -008 103102100 -3 -4 -5 040 51 02 15 -3.2 -3.3 28.76 11 17 28 226 -011 102105106 -4 -5 -6 038 52 02 16 -4.4 -4.8 28.77 16 21 9 208 -004 101101 99 -5 -6 -6 038 53 02 17 -4.9 -5.1 28.77 15 22 13 211 -005 104107 98 -6 -7 -7 017 54 02 18 -5.2 -5.3 28.77 17 23 11 209 -008 105107 98 -6 -7 -8 005 55 02 19 -5.4 -5.5 28.76 18 25 9 207 -005 105107 73 -6 -7 -8 004 56 02 20 -5.2 -5.3 28.76 20 27 11 210 -006 105107 62 -6 -7 -8 001 57 02 21 -4.8 -4.9 28.76 22 28 16 215 -003 105107 81 -6 -7 -8 002 58 02 22 -4.6 -4.6 28.76 24 31 15 214 004 104107 83 -5 -7 -7 009 59 02 23 -4.4 -4.5 28.77 23 29 18 217 013 104106 82 -5 -6 -7 001 60 03 00 -4.3 -4.4 28.77 19 27 22 220 011 104106100 -5 -6 -7 001 61 03 01 -4.1 -4.2 28.76 20 28 29 228 -004 104106106 -5 -6 -7 012 62 03 02 -4.0 -4.0 28.76 19 25 28 227 -004 104106102 -5 -6 -7 012 63 03 03 -4.4 -4.5 28.77 17 22 23 221 -004 104106 97 -5 -6 -7 003 64 03 04 -4.7 -4.8 28.77 16 20 23 222 001 104107 99 -5 -7 -8 000 65 03 05 -4.9 -5.0 28.76 13 21 21 219 001 105107 97 -6 -7 -7 000 66 03 06 -5.2 -5.3 28.76 14 21 27 225 004 105106101 -6 -6 -7 000 67 03 07 -5.4 -5.5 28.76 13 20 23 222 004 105106 94 -6 -6 -7 000 68 03 08 -5.6 -5.7 28.75 11 18 30 229 002 105106102 -6 -6 -7 000 69 03 09 -5.6 -5.7 28.76 10 17 43 241 -003 105106 97 -6 -6 -7 002 70 03 10 -5.5 -5.6 28.75 8 14 46 245 000 105106 92 -5 -6 -7 000 71 03 11 -5.7 -5.9 28.75 6 12 30 229 -003 105105 90 -5 -6 -6 000 72 03 12 -7.3 -7.5 28.74 4 7 48 247 -008 107102 81 -5 -6 -6 000 73 03 13 -6.8 -7.0 28.74 4 7 57 256 -008 106 87 85 -4 -5 -6 000 74 03 14 -7.2 -7.3 28.73 4 5 48 247 -007 107 82 82 -4 -4 -5 000 75 03 15 -8.4 -8.8 28.73 3 10 80 278 -002 108 82 78 -4 -4 -6 000 76 03 16 -7.4 -7.7 28.72 6 10 99 298 000 106 80 77 -4 -5 -5 000 77 03 17 -6.2 -6.5 28.71 6 11 110 308 006 105 97 73 -4 -5 -6 000 78 03 18 -4.5 -5.4 28.71 4 9 137 335 007 96 84 78 -3 -4 -5 000 79 03 19 -4.0 -4.5 28.70 6 11 140 339 002 99101108 -3 -4 -5 000 80 03 20 -2.4 -3.3 28.70 9 12 139 337 006 95104104 -3 -4 -5 000 81 03 21 -2.3 -3.0 28.70 8 13 142 340 002 96103102 -3 -4 -4 000 82 03 22 -2.3 -3.0 28.70 8 13 141 339 003 96 94103 -3 -3 -4 000 83 03 23 -1.7 -2.5 28.70 8 12 135 333 -002 94 86107 -2 -3 -4 000 84 04 00 -1.7 -2.7 28.69 8 12 127 326 000 93 88105 -2 -3 -4 000 85 04 01 -1.6 -2.6 28.69 8 12 121 319 -001 93 86103 -2 -3 -4 000 86 04 02 -1.7 -2.6 28.70 8 11 117 315 -001 94 90 97 -2 -3 -4 000 87 04 03 -2.7 -3.0 28.70 7 11 121 319 003 100 89 97 -2 -3 -4 000 88 04 04 -3.8 -3.8 28.70 6 11 114 313 000 103 88 95 -2 -3 -3 000 89 04 05 -3.9 -4.0 28.70 7 12 102 301 000 104 83 97 -2 -3 -3 000 90 04 06 -5.0 -5.1 28.71 5 11 105 303 001 104 82100 -3 -3 -3 000 91 04 07 -5.3 -5.4 28.71 5 10 110 308 001 105 81100 -3 -3 -3 000 92 04 08 -5.4 -5.7 28.71 5 9 125 323 002 105 79 94 -3 -3 -4 000 93 04 09 -4.2 -4.3 28.72 5 10 129 327 -004 103 78 96 -3 -3 -4 000 94 04 10 -5.2 -5.5 28.73 6 10 120 319 001 104 77 93 -2 -3 -4 000 95 04 11 -4.7 -4.8 28.73 7 10 102 301 001 104 75 99 -2 -3 -4 000 96 04 12 -5.0 -5.1 28.74 6 8 93 291 -001 104 76 91 -2 -3 -4 000 97 04 13 -5.4 -5.6 28.75 6 9 85 283 002 105 75 86 -3 -3 -4 000 98 04 14 -5.4 -5.5 28.75 5 6 68 266 000 105 77 92 -3 -3 -4 000 99 04 15 -5.6 -5.7 28.76 5 6 52 251 -003 105 80 95 -3 -4 -5 000 100 04 16 -5.6 -5.7 28.76 4 4 51 250 002 105 82 90 -4 -4 -5 000 101 04 17 -5.5 -5.6 28.77 3 3 19 217 000 105 91 90 -4 -5 -6 000 102 04 18 -5.5 -5.6 28.78 3 3 25 224 -001 105 90 98 -3 -4 -5 000 103 04 19 -5.1 -5.1 28.78 4 4 28 226 000 105 90 81 -4 -4 -5 000 104 04 20 -4.8 -4.8 28.79 5 5 14 213 000 105 89 89 -4 -4 -5 000 105 04 21 -4.3 -4.3 28.80 4 5 17 215 -002 104 89 96 -5 -4 -5 000 106 04 22 -3.8 -3.8 28.81 4 4 16 214 000 103 91100 -5 -4 -5 000 107 04 23 -3.4 -3.8 28.82 3 4 14 213 000 100 93 98 -4 -4 -5 003 108 05 00 -3.2 -3.6 28.82 3 4 3 201 001 100 96 97 -4 -4 -5 002 109 05 01 -3.1 -3.7 28.83 3 3 350 188 000 98 96 98 -4 -4 -5 002 110 05 02 -3.2 -3.7 28.83 3 3 334 173 000 99100100 -4 -5 -5 002 111 05 03 -3.2 -3.5 28.83 3 3 331 170 000 100105100 -4 -5 -5 002 112 05 04 -3.2 -3.6 28.83 3 3 336 175 000 99105 99 -4 -5 -6 002 113 05 05 -3.4 -3.8 28.83 3 3 338 177 000 99105 99 -4 -5 -6 002 114 05 06 -3.5 -4.1 28.84 3 3 332 171 -001 98106 99 -4 -6 -5 005 115 05 07 -3.7 -4.5 28.84 1 3 302 140 000 97105100 -4 -5 -5 006 116 05 08 -3.9 -4.6 28.84 0 3 321 159 000 98106 99 -4 -6 -5 007 117 05 09 -4.2 -4.5 28.85 1 3 18 217 000 101106104 -4 -6 -6 007 118 05 10 -5.0 -5.1 28.86 2 4 358 197 000 104105103 -4 -6 -6 007 119 05 11 -5.0 -5.1 28.86 1 4 359 198 000 103106101 -4 -6 -6 004 120 05 12 -4.7 -5.1 28.87 1 5 33 232 000 102106100 -4 -6 -7 003 * 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.