USAP Roosevelt Island (ARI) site lat/lon = (-79.3633,-161.6268) cell lat/lon = (-79.3634,-161.6464) Forecast initialized at 2026-01-29/00 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 29 00 -9.3 -10.4 28.78 7 9 104 302 000 95 88 77 -9-10-10 000 1 29 01 -9.7 -10.4 28.75 10 12 93 291 000 104 95 81 -9-10-10 000 2 29 02 -10.4 -11.4 28.77 10 12 95 294 000 102 90 81 -9 -9-10 000 3 29 03 -11.0 -12.1 28.75 10 13 95 294 000 101 91 83 -9 -9-10 000 4 29 04 -11.5 -13.0 28.75 10 14 97 295 000 98 91 85 -9 -9-10 000 5 29 05 -12.0 -14.0 28.73 10 15 99 297 000 95 90 90 -9 -9-10 000 6 29 06 -12.5 -15.0 28.72 10 16 100 299 000 90 90 93 -9 -9-10 000 7 29 07 -13.1 -16.1 28.71 10 17 103 302 000 86 89 95 -9 -9-10 000 8 29 08 -13.4 -16.8 28.70 11 18 102 300 000 82 90 97 -9 -9-10 000 9 29 09 -13.7 -17.2 28.69 11 18 103 301 000 81 89 97 -9 -9-10 001 10 29 10 -13.8 -17.5 28.71 12 19 103 302 000 80 89 96 -9 -9-10 001 11 29 11 -13.9 -17.7 28.66 12 20 103 301 -001 79 94 96 -9 -9-10 001 12 29 12 -13.8 -17.6 28.65 13 21 103 302 000 80 99 95 -9 -9-10 002 13 29 13 -13.7 -17.1 28.65 14 21 104 302 000 82 98 94 -9 -9-10 003 14 29 14 -13.6 -16.9 28.64 15 22 102 300 000 84 98 94 -10 -9 -9 003 15 29 15 -13.2 -16.4 28.64 16 23 101 299 000 85 97 93 -9 -9 -9 004 16 29 16 -12.5 -15.1 28.64 16 23 98 297 001 89 96 91 -9 -9 -8 004 17 29 17 -12.1 -14.3 28.62 16 23 97 296 000 93 98 90 -9 -9 -8 003 18 29 18 -11.2 -12.6 28.60 16 22 98 296 000 99 98 92 -9 -8 -8 007 19 29 19 -10.2 -11.4 28.60 14 19 96 294 -001 100 97 93 -9 -8 -8 013 20 29 20 -9.4 -10.5 28.60 14 17 96 294 -004 100100 95 -9 -8 -8 011 21 29 21 -8.9 -9.8 28.61 12 16 95 293 -004 100 99 98 -8 -7 -8 014 22 29 22 -8.6 -9.6 28.61 12 15 92 291 -003 100101100 -8 -8 -8 018 23 29 23 -8.7 -9.7 28.60 12 15 88 287 -003 100100100 -8 -7 -8 026 24 30 00 -8.2 -9.1 28.59 12 15 87 285 -004 100 96 98 -8 -7 -7 021 25 30 01 -8.0 -8.8 28.59 12 15 83 281 -007 101 96 96 -8 -7 -7 013 26 30 02 -7.8 -8.5 28.59 12 15 80 278 -005 102 96 98 -8 -7 -7 008 27 30 03 -7.6 -8.2 28.60 12 14 81 280 -004 103 98 96 -8 -7 -7 010 28 30 04 -7.6 -7.9 28.59 11 15 80 279 -006 106100 95 -8 -7 -7 005 29 30 05 -7.4 -7.5 28.58 11 14 77 276 -008 107102 96 -8 -7 -7 005 30 30 06 -7.2 -7.3 28.58 11 14 76 274 -010 107100 93 -7 -7 -7 004 31 30 07 -7.0 -7.1 28.58 11 15 73 271 -013 107 97 94 -7 -7 -7 006 32 30 08 -6.7 -7.0 28.59 10 14 73 271 -009 105 97 99 -6 -7 -7 012 33 30 09 -6.5 -6.7 28.59 10 14 77 275 -008 106100 97 -6 -7 -7 019 34 30 10 -6.6 -6.8 28.59 11 14 81 279 -008 106 96 94 -6 -6 -7 013 35 30 11 -6.7 -6.9 28.60 11 14 77 275 -006 106 92 97 -7 -6 -7 010 36 30 12 -6.8 -7.0 28.60 10 13 75 273 -004 106 97 96 -7 -6 -7 010 37 30 13 -6.8 -7.0 28.61 10 14 72 271 -004 106 99 89 -7 -7 -7 011 38 30 14 -6.8 -6.9 28.61 11 16 63 261 -006 106100 89 -6 -7 -7 009 39 30 15 -6.5 -6.7 28.62 11 15 52 250 -007 106 96 94 -6 -7 -7 008 40 30 16 -6.2 -6.3 28.63 10 14 50 248 -006 106 97 99 -7 -7 -8 008 41 30 17 -5.9 -6.0 28.63 11 16 51 249 -007 106104100 -7 -7 -8 011 42 30 18 -5.8 -6.0 28.64 11 18 53 251 -009 105102 99 -6 -7 -8 011 43 30 19 -5.7 -5.9 28.65 11 20 43 242 -009 104103101 -6 -7 -8 009 44 30 20 -5.7 -5.9 28.66 12 20 42 241 -012 104101106 -6 -7 -7 005 45 30 21 -5.3 -6.0 28.67 13 19 35 233 -031 99107100 -6 -7 -7 004 46 30 22 -5.2 -5.5 28.69 12 21 32 230 -020 102107105 -6 -7 -8 006 47 30 23 -5.1 -5.4 28.70 13 21 41 240 -012 102107101 -6 -7 -8 013 48 31 00 -5.1 -5.7 28.70 15 22 41 239 -008 101106102 -6 -7 -7 005 49 31 01 -5.1 -5.5 28.71 14 21 44 242 -011 102107104 -6 -7 -7 002 50 31 02 -4.7 -5.3 28.72 14 21 43 241 000 99107108 -6 -7 -8 002 51 31 03 -4.6 -5.4 28.74 14 21 44 242 004 98107106 -6 -7 -8 003 52 31 04 -4.8 -5.7 28.75 14 21 37 236 -006 97107111 -6 -7 -8 002 53 31 05 -4.9 -5.6 28.76 17 23 47 246 001 99107111 -6 -7 -8 005 54 31 06 -5.2 -6.0 28.76 19 25 52 250 001 98104101 -6 -7 -8 007 55 31 07 -5.3 -6.0 28.77 18 26 40 239 -002 99107111 -6 -7 -8 004 56 31 08 -5.5 -6.2 28.78 18 27 36 235 001 100107111 -6 -7 -8 001 57 31 09 -6.0 -6.4 28.80 17 25 39 237 002 103107111 -6 -7 -8 001 58 31 10 -6.1 -6.5 28.81 15 22 43 241 -012 104108110 -7 -8 -8 007 59 31 11 -6.3 -6.6 28.83 14 21 43 241 -003 104108109 -7 -8 -9 011 60 31 12 -6.5 -6.7 28.84 15 21 41 240 -024 105108106 -7 -8 -9 013 61 31 13 -6.6 -6.8 28.86 13 20 40 238 -039 106108110 -7 -8 -9 014 62 31 14 -6.8 -6.9 28.87 14 20 39 237 -052 106108108 -7 -8 -9 011 63 31 15 -6.9 -7.0 28.88 15 20 36 235 -032 107109106 -8 -9 -9 009 64 31 16 -6.8 -7.1 28.90 16 22 35 233 -004 105109100 -8 -9 -9 007 65 31 17 -6.7 -7.3 28.90 17 24 29 228 000 102104 93 -8 -8 -8 005 66 31 18 -6.6 -7.3 28.90 16 23 20 218 000 101102 86 -7 -7 -8 003 67 31 19 -6.5 -7.1 28.91 12 19 26 224 -002 102102 82 -7 -7 -7 001 68 31 20 -6.1 -6.5 28.93 8 10 66 264 -004 102108102 -7 -8 -8 000 69 31 21 -5.6 -6.2 28.94 7 11 97 295 002 100108 94 -7 -8 -9 000 70 31 22 -5.5 -6.5 28.94 11 15 103 302 003 97108 84 -7 -8 -9 000 71 31 23 -6.5 -7.3 28.95 14 19 86 284 000 100102 77 -7 -8 -9 000 72 01 00 -6.4 -7.3 28.95 16 22 68 266 -001 99 98 79 -7 -7 -8 000 73 01 01 -6.1 -6.7 28.95 15 21 72 270 -009 101 91 88 -6 -7 -7 000 74 01 02 -5.7 -6.3 28.95 14 20 67 266 -007 101 96 99 -6 -7 -7 000 75 01 03 -5.2 -6.1 28.95 15 21 72 270 -008 97107 94 -6 -7 -8 000 76 01 04 -4.9 -5.9 28.95 16 20 76 274 -009 96104 89 -6 -7 -8 000 77 01 05 -4.9 -5.6 28.96 15 18 75 273 -008 99107103 -6 -7 -8 000 78 01 06 -5.3 -5.4 28.96 12 17 78 277 -004 105103109 -6 -6 -7 000 79 01 07 -5.2 -5.3 28.96 12 16 77 275 -002 105101109 -6 -6 -7 001 80 01 08 -5.7 -6.2 28.97 12 17 67 266 -022 101101102 -5 -6 -6 001 81 01 09 -5.9 -6.0 28.98 11 15 63 261 000 105100108 -6 -6 -7 001 82 01 10 -5.7 -6.4 28.98 9 15 70 269 -004 100103108 -5 -6 -6 007 83 01 11 -5.3 -5.5 28.98 10 17 65 264 005 105106107 -5 -6 -7 014 84 01 12 -5.2 -5.4 28.98 13 19 53 251 006 104105107 -5 -6 -7 019 85 01 13 -5.2 -5.6 28.98 13 18 50 248 000 102106102 -5 -6 -7 006 86 01 14 -5.3 -5.7 28.98 14 19 58 256 006 102106106 -6 -6 -7 005 87 01 15 -5.3 -5.8 28.98 13 19 56 254 005 101106107 -6 -6 -6 007 88 01 16 -5.2 -5.7 28.98 14 18 61 259 007 101106107 -6 -6 -6 019 89 01 17 -5.0 -5.3 28.98 14 20 59 257 009 103106108 -5 -6 -6 014 90 01 18 -4.6 -5.1 28.97 13 20 58 256 003 101105107 -5 -5 -5 002 91 01 19 -4.2 -4.8 28.96 13 18 59 257 000 99105107 -5 -5 -5 002 92 01 20 -3.9 -4.4 28.96 13 18 66 264 -002 99105101 -4 -5 -5 001 93 01 21 -3.4 -3.8 28.96 14 20 74 273 -006 100101106 -4 -4 -5 005 94 01 22 -2.8 -3.5 28.95 15 21 75 274 -013 97 99 95 -4 -4 -5 001 95 01 23 -2.5 -3.1 28.93 15 22 82 281 -010 97 91 95 -3 -3 -4 000 96 02 00 -1.9 -3.0 28.92 17 26 88 286 -012 93 87103 -2 -3 -4 003 97 02 01 -1.7 -2.8 28.90 22 28 83 281 -017 92 85 94 -3 -3 -3 000 98 02 02 -2.0 -2.2 28.89 18 23 86 284 -023 100104103 -3 -4 -4 002 99 02 03 -1.8 -1.9 28.87 17 22 75 273 000 102103100 -2 -3 -3 009 100 02 04 -1.6 -1.7 28.85 16 20 69 268 -011 101103101 -2 -3 -3 005 101 02 05 -1.4 -1.4 28.84 17 21 59 258 -022 101103 99 -2 -2 -2 001 102 02 06 -1.5 -1.5 28.84 14 18 56 255 -022 101102102 -2 -2 -3 002 103 02 07 -1.5 -1.5 28.83 12 17 52 250 -015 101103103 -2 -2 -3 001 104 02 08 -1.5 -1.5 28.83 12 17 49 247 -017 101103102 -2 -2 -3 001 105 02 09 -1.6 -1.6 28.82 10 15 56 254 005 101102103 -2 -2 -2 001 106 02 10 -1.6 -1.6 28.81 12 17 64 262 -004 101 99103 -1 -2 -2 000 107 02 11 -1.4 -1.4 28.81 12 20 70 268 004 101102 99 -1 -2 -3 003 108 02 12 -1.3 -1.3 28.80 13 21 77 276 002 101102104 -1 -2 -3 004 109 02 13 -0.9 -0.9 28.79 16 21 70 268 011 101102104 -1 -2 -3 015 110 02 14 -1.2 -1.2 28.78 15 20 63 262 009 101102102 -2 -2 -3 003 111 02 15 -1.4 -1.4 28.77 15 20 59 258 008 101103104 -2 -3 -3 006 112 02 16 -1.3 -1.3 28.76 15 18 62 260 003 101103103 -2 -2 -3 009 113 02 17 -1.0 -1.0 28.76 13 18 62 260 005 101103104 -1 -2 -3 009 114 02 18 -1.1 -1.1 28.76 12 15 65 264 -003 101103105 -2 -3 -3 010 115 02 19 -0.8 -0.8 28.76 11 15 72 270 -003 101103105 -2 -3 -3 008 116 02 20 -0.8 -0.8 28.76 13 17 71 270 008 101103104 -2 -3 -3 005 117 02 21 -0.7 -1.4 28.77 13 20 54 252 004 95102106 -2 -3 -4 004 118 02 22 -0.5 -1.0 28.76 11 18 66 264 008 97102106 -1 -2 -3 002 119 02 23 -0.1 -0.9 28.75 15 21 72 270 008 93101106 -1 -2 -3 001 120 03 00 -0.2 -0.2 28.74 18 23 74 273 008 100102101 -1 -2 -3 005 * 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.