USAP Shackleton Glacier site lat/lon = (-85.0800,-175.3800) cell lat/lon = (-85.0689,-175.3710) Forecast initialized at 2026-04-30/12 UTC MPAS cell scale: 2.3 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 30 12 -36.1 -43.5 28.65 3 3 112 297 -002 60 60 65 -32-33-33 000 1 30 13 -38.1 -42.0 28.66 5 8 101 285 009 94 61 68 -33-34-34 000 2 30 14 -37.8 -44.1 28.67 10 18 70 255 -003 61 50 65 -31-32-34 000 3 30 15 -36.1 -41.8 28.64 9 9 32 217 -005 67 45 68 -32-32-32 000 4 30 16 -36.9 -41.7 28.67 9 9 20 205 004 76 46 63 -32-31-32 000 5 30 17 -35.6 -43.8 28.68 8 8 42 227 002 49 47 63 -32-31-32 000 6 30 18 -35.8 -43.3 28.70 10 10 42 227 000 50 48 65 -31-32-32 000 7 30 19 -35.3 -43.0 28.71 7 7 47 231 000 53 53 62 -32-32-33 000 8 30 20 -36.0 -42.6 28.70 9 9 47 232 000 59 50 67 -31-32-32 000 9 30 21 -36.5 -42.6 28.73 10 10 17 201 001 62 49 75 -31-32-32 000 10 30 22 -35.6 -42.2 28.75 7 7 34 219 000 63 52 70 -32-32-32 000 11 30 23 -34.9 -40.9 28.74 7 7 60 244 001 68 50 57 -31-32-32 000 12 01 00 -34.8 -40.3 28.75 6 6 50 235 003 72 52 56 -31-32-32 000 13 01 01 -34.7 -41.6 28.77 6 6 39 223 002 64 51 55 -31-31-32 000 14 01 02 -34.7 -41.5 28.78 6 6 39 224 001 65 48 54 -31-31-32 000 15 01 03 -35.5 -41.5 28.79 7 7 30 215 001 67 46 56 -30-31-32 000 16 01 04 -33.7 -40.6 28.79 5 6 32 217 001 64 47 58 -31-31-31 000 17 01 05 -33.8 -40.7 28.79 5 8 40 224 001 63 48 59 -31-31-31 000 18 01 06 -33.9 -41.0 28.80 5 11 45 230 000 62 46 57 -31-31-31 000 19 01 07 -33.9 -41.3 28.80 3 14 68 253 001 60 48 55 -31-31-31 000 20 01 08 -34.4 -41.4 28.81 4 10 41 225 002 62 49 56 -31-31-31 000 21 01 09 -34.6 -41.4 28.80 4 10 35 220 002 63 49 55 -31-31-31 000 22 01 10 -34.6 -41.4 28.80 3 12 56 240 001 63 48 53 -31-31-31 000 23 01 11 -34.1 -41.6 28.80 5 11 42 227 001 59 46 52 -31-30-30 000 24 01 12 -34.3 -41.5 28.80 3 11 46 230 001 61 47 51 -31-30-30 000 25 01 13 -35.3 -41.5 28.79 3 15 107 292 002 68 47 49 -30-30-30 000 26 01 14 -34.2 -41.5 28.79 4 13 55 239 003 60 46 47 -30-30-30 000 27 01 15 -33.9 -41.7 28.77 4 13 80 264 002 57 46 46 -30-30-30 000 28 01 16 -33.7 -41.7 28.76 3 14 84 269 001 55 45 44 -30-30-30 000 29 01 17 -33.2 -41.6 28.74 5 14 58 243 003 53 42 41 -29-29-30 000 30 01 18 -32.9 -41.7 28.72 5 5 46 230 002 51 42 38 -30-29-29 000 31 01 19 -32.8 -41.5 28.72 4 16 77 262 001 51 43 37 -29-29-29 000 32 01 20 -32.6 -41.3 28.70 5 15 67 251 004 52 42 35 -29-29-29 000 33 01 21 -32.8 -41.4 28.68 6 15 52 236 003 52 42 34 -29-29-29 000 34 01 22 -33.4 -41.7 28.67 7 14 46 231 003 51 42 32 -28-29-28 000 35 01 23 -32.4 -41.3 28.67 6 16 50 234 002 50 41 31 -28-29-28 000 36 02 00 -32.1 -41.1 28.66 6 15 45 229 003 49 41 30 -28-28-28 000 37 02 01 -32.7 -41.1 28.65 7 13 45 230 002 51 39 29 -28-28-28 000 38 02 02 -31.7 -40.8 28.65 6 14 41 226 001 49 40 27 -28-28-27 000 39 02 03 -31.5 -40.7 28.64 5 11 34 218 001 49 38 27 -28-28-27 000 40 02 04 -31.4 -40.8 28.63 5 16 50 235 002 47 39 25 -27-28-28 000 41 02 05 -31.5 -40.7 28.63 6 14 34 218 002 48 38 23 -28-28-27 000 42 02 06 -31.5 -41.0 28.61 5 16 47 231 001 47 37 21 -27-27-27 000 43 02 07 -31.2 -40.8 28.61 6 14 28 213 000 46 37 19 -27-27-26 000 44 02 08 -31.0 -40.8 28.61 6 16 44 228 006 45 36 17 -27-27-26 000 45 02 09 -29.9 -40.6 28.61 7 16 45 230 006 41 35 15 -27-27-26 000 46 02 10 -30.8 -41.1 28.61 7 19 50 235 005 40 33 14 -26-25-26 000 47 02 11 -30.4 -41.0 28.61 7 18 44 229 005 37 34 12 -26-25-25 000 48 02 12 -30.4 -40.6 28.60 8 18 46 231 000 37 39 12 -26-25-25 000 49 02 13 -29.7 -39.3 28.62 9 28 50 235 -002 39 41 24 -25-24-24 000 50 02 14 -29.9 -39.2 28.62 9 19 28 213 007 38 37 28 -24-24-23 000 51 02 15 -28.1 -36.8 28.62 6 11 23 208 004 48 34 10 -24-24-22 000 52 02 16 -26.7 -37.9 28.62 5 17 46 231 002 39 45 11 -23-23-23 000 53 02 17 -26.6 -37.0 28.63 6 19 46 231 002 42 45 17 -23-22-23 000 54 02 18 -27.7 -35.7 28.63 12 19 41 226 001 45 41 28 -22-21-21 000 55 02 19 -24.9 -33.8 28.63 5 6 21 205 -003 50 35 34 -22-21-20 000 56 02 20 -25.1 -34.2 28.65 5 20 81 266 -003 49 44 34 -21-22-21 000 57 02 21 -25.4 -34.1 28.65 5 29 88 273 007 51 41 37 -20-20-21 000 58 02 22 -25.7 -34.0 28.65 7 30 64 249 -010 51 43 35 -21-19-20 000 59 02 23 -26.3 -33.7 28.66 8 32 68 253 -007 52 44 36 -20-19-19 000 60 03 00 -26.3 -33.2 28.66 10 28 48 232 002 53 43 35 -20-18-18 000 61 03 01 -25.3 -32.8 28.67 10 28 51 236 -006 49 43 36 -19-18-17 000 62 03 02 -23.8 -31.5 28.67 7 17 63 248 -003 55 40 34 -17-17-16 000 63 03 03 -24.7 -29.3 28.66 8 18 193 18 002 71 38 39 -16-16-15 000 64 03 04 -21.2 -28.4 28.67 1 20 86 270 -004 58 36 38 -16-15-16 000 65 03 05 -22.2 -28.7 28.68 0 11 254 79 009 62 41 36 -18-16-14 000 66 03 06 -22.4 -27.2 28.67 5 7 255 79 043 75 32 40 -16-13-13 000 67 03 07 -23.8 -29.2 28.68 9 9 3 187 000 65 31 42 -16-13-14 000 68 03 08 -22.2 -27.1 28.68 7 11 220 45 002 69 34 37 -15-14-14 000 69 03 09 -22.2 -28.2 28.67 10 12 81 265 -067 58 28 40 -12-11-12 000 70 03 10 -16.4 -25.2 28.68 25 26 229 54 093 46 34 43 -12-12-13 000 71 03 11 -17.1 -25.1 28.70 23 39 195 20 034 50 41 54 -14-14-14 000 72 03 12 -21.8 -27.5 28.73 12 19 35 220 009 63 40 39 -15-15-15 000 73 03 13 -19.1 -25.8 28.75 4 6 222 46 -002 62 38 53 -15-14-15 000 74 03 14 -22.0 -28.0 28.74 11 11 53 238 008 57 39 46 -14-14-15 000 75 03 15 -18.9 -25.4 28.74 22 24 204 29 028 61 43 42 -15-15-15 000 76 03 16 -21.3 -27.2 28.74 21 24 8 192 036 66 39 37 -17-16-16 000 77 03 17 -21.8 -27.9 28.75 11 15 345 170 015 58 32 43 -16-15-16 000 78 03 18 -23.2 -28.9 28.77 7 8 40 225 002 64 44 43 -17-18-17 000 79 03 19 -23.8 -29.1 28.78 10 16 201 26 003 66 47 45 -17-18-19 000 80 03 20 -22.5 -28.9 28.79 4 4 44 228 000 65 46 44 -17-18-18 000 81 03 21 -21.2 -29.2 28.79 4 9 9 193 007 55 40 46 -18-17-18 000 82 03 22 -21.4 -29.8 28.79 5 7 30 215 013 52 41 47 -18-17-18 000 83 03 23 -23.7 -30.1 28.79 10 10 27 211 -005 56 43 46 -18-18-18 000 84 04 00 -22.3 -29.5 28.80 9 9 33 217 000 52 41 46 -17-18-19 000 85 04 01 -23.3 -29.0 28.80 6 10 169 354 000 68 43 47 -17-18-19 000 86 04 02 -24.5 -30.4 28.81 9 9 35 220 -007 60 44 49 -18-18-19 000 87 04 03 -23.0 -30.1 28.81 9 9 34 218 -003 52 42 50 -17-18-19 000 88 04 04 -22.7 -30.3 28.80 9 9 27 211 002 48 40 52 -17-17-18 000 89 04 05 -22.8 -30.1 28.81 8 8 339 164 -008 51 41 55 -17-17-17 000 90 04 06 -24.0 -29.4 28.81 13 13 2 187 002 68 53 48 -17-19-19 000 91 04 07 -23.5 -29.7 28.82 1 4 53 238 003 67 47 49 -19-19-19 000 92 04 08 -23.7 -30.0 28.84 5 6 16 201 000 63 44 51 -18-18-19 000 93 04 09 -23.6 -29.8 28.86 6 6 34 219 001 63 42 54 -19-18-19 000 94 04 10 -21.7 -29.6 28.88 3 5 353 178 002 57 46 57 -19-19-19 000 95 04 11 -23.6 -28.8 28.90 8 8 3 187 -002 67 47 59 -19-19-20 000 96 04 12 -23.8 -28.2 28.94 8 9 0 185 -001 76 50 69 -20-20-21 000 97 04 13 -23.5 -28.1 28.97 3 6 353 178 -002 79 47 63 -20-20-20 000 98 04 14 -23.1 -29.9 28.99 7 7 66 251 004 55 45 65 -19-19-20 000 99 04 15 -22.8 -30.1 29.01 3 10 195 19 006 60 47 62 -20-20-20 000 100 04 16 -23.5 -29.9 29.03 4 14 148 332 -005 66 50 69 -19-20-21 000 101 04 17 -23.0 -30.3 29.04 4 17 42 227 009 60 48 64 -20-20-21 000 102 04 18 -24.1 -30.6 29.05 3 11 34 218 -002 65 49 59 -21-21-20 000 103 04 19 -24.4 -30.9 29.06 3 22 69 254 -002 64 51 56 -21-21-21 000 104 04 20 -26.0 -31.7 29.06 4 27 124 308 003 71 46 49 -21-21-22 000 105 04 21 -26.5 -32.1 29.07 4 21 160 344 001 72 47 50 -21-21-21 000 106 04 22 -27.2 -32.4 29.07 3 19 177 1 001 75 48 47 -21-21-21 000 107 04 23 -26.4 -32.6 29.06 3 12 7 192 -004 66 45 45 -21-21-21 000 108 05 00 -26.9 -32.6 29.06 3 5 11 196 004 70 44 51 -21-21-20 000 109 05 01 -26.1 -33.0 29.06 1 15 91 276 002 61 46 49 -21-21-20 000 110 05 02 -26.0 -33.2 29.06 2 19 126 311 000 59 46 45 -21-22-21 000 111 05 03 -27.3 -33.3 29.05 3 21 128 313 001 68 46 47 -21-22-21 000 112 05 04 -27.8 -33.7 29.04 3 20 158 343 001 69 45 47 -21-22-21 000 113 05 05 -28.2 -33.9 29.03 6 23 152 337 002 71 43 44 -21-21-22 000 114 05 06 -28.8 -34.4 29.02 7 26 152 336 000 68 42 41 -22-21-22 000 115 05 07 -28.4 -33.9 29.01 7 26 149 334 001 69 40 43 -22-21-21 000 116 05 08 -27.7 -33.6 28.98 5 24 149 334 003 70 42 38 -22-21-20 000 117 05 09 -26.4 -34.0 28.96 6 10 23 208 000 57 41 34 -21-21-19 000 118 05 10 -26.2 -34.0 28.93 6 11 24 208 001 55 42 31 -21-21-19 000 119 05 11 -26.9 -33.8 28.91 2 18 184 9 002 62 44 27 -20-21-19 000 120 05 12 -25.1 -33.2 28.89 5 20 10 194 000 54 42 29 -20-20-19 000 * 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.