USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-01-10/00 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 10 00 -12.9 -14.9 28.95 4 5 332 183 000 89 78 63 -13-13-13 000 1 10 01 -13.0 -14.4 28.96 6 7 335 186 000 101 80 65 -13-12-12 000 2 10 02 -13.1 -14.4 28.97 6 7 334 185 000 102 79 65 -12-12-12 000 3 10 03 -13.2 -14.5 28.98 6 7 336 187 000 102 78 65 -12-12-12 000 4 10 04 -13.6 -14.8 28.98 6 7 341 192 000 104 79 65 -12-12-13 000 5 10 05 -14.2 -14.9 28.98 6 8 343 194 000 110 79 65 -12-12-12 000 6 10 06 -14.9 -15.4 29.00 6 8 346 197 000 115 78 64 -12-12-12 000 7 10 07 -16.0 -16.4 28.99 5 8 347 198 000 116 76 64 -12-12-12 000 8 10 08 -16.6 -17.0 29.01 5 9 345 196 000 117 74 64 -12-12-12 000 9 10 09 -16.7 -17.3 29.01 6 9 338 189 000 117 71 65 -12-12-13 000 10 10 10 -16.8 -17.3 29.00 7 10 338 189 000 117 70 64 -12-12-13 000 11 10 11 -16.8 -17.4 29.02 7 10 336 187 000 117 71 65 -12-12-12 000 12 10 12 -16.9 -17.3 29.02 7 11 334 185 -001 117 66 66 -12-12-12 000 13 10 13 -16.6 -16.9 29.01 8 11 312 163 000 117 66 65 -12-12-12 000 14 10 14 -13.9 -14.2 29.02 9 12 295 146 000 114 66 65 -12-12-12 000 15 10 15 -12.1 -12.3 29.03 10 12 292 143 000 112 80 67 -13-12-13 000 16 10 16 -11.5 -11.7 29.04 9 10 297 148 000 111 93 69 -13-13-12 000 17 10 17 -11.2 -11.8 29.04 9 10 302 153 000 107103 72 -12-13-12 000 18 10 18 -10.9 -11.3 29.03 8 9 307 158 000 109104 75 -12-13-12 000 19 10 19 -10.6 -11.4 29.03 8 9 309 160 000 104 86 78 -12-12-12 000 20 10 20 -10.5 -11.4 29.04 8 9 305 156 000 103 84 80 -12-12-12 000 21 10 21 -10.2 -10.3 29.04 9 10 296 147 000 110113 83 -11-13-12 000 22 10 22 -9.7 -10.3 29.03 9 9 293 144 000 104113 87 -11-12-12 000 23 10 23 -9.6 -10.0 29.01 8 9 291 142 000 106112 88 -11-12-13 000 24 11 00 -9.2 -10.3 29.02 7 8 285 136 000 100112 88 -11-12-13 000 25 11 01 -9.2 -9.7 29.02 6 7 277 128 000 106112 84 -10-12-13 000 26 11 02 -9.2 -10.4 29.02 5 5 270 121 000 99112 76 -10-12-13 000 27 11 03 -9.2 -10.9 29.00 4 4 272 123 000 94112 68 -10-12-13 000 28 11 04 -9.2 -10.7 28.99 3 3 287 138 000 97112 65 -10-12-13 000 29 11 05 -9.3 -10.9 28.98 3 3 310 161 001 95112 66 -10-12-13 000 30 11 06 -9.4 -10.8 28.97 3 3 329 180 000 97112 69 -11-12-13 000 31 11 07 -9.7 -10.8 28.96 3 3 314 165 001 101113 69 -11-12-11 000 32 11 08 -9.9 -11.5 28.95 2 5 302 153 000 97113 68 -11-12-11 000 33 11 09 -10.1 -11.1 28.93 2 4 291 142 000 101113 70 -11-12-11 000 34 11 10 -10.2 -11.4 28.92 1 4 300 151 001 100105 68 -11-12-11 000 35 11 11 -10.3 -11.4 28.91 0 3 215 66 001 103 90 58 -11-11-11 000 36 11 12 -10.8 -11.1 28.90 0 4 237 88 000 109102 52 -12-11-11 000 37 11 13 -11.3 -11.4 28.89 0 4 187 38 001 111 97 38 -12-11-11 000 38 11 14 -11.8 -11.8 28.88 0 4 68 279 000 112 78 39 -11-11-11 000 39 11 15 -12.1 -12.1 28.86 0 4 46 257 001 112 80 41 -11-11-11 000 40 11 16 -12.1 -12.2 28.85 0 4 121 332 001 112 70 44 -11-11-11 000 41 11 17 -12.2 -12.2 28.84 1 4 173 24 000 112 65 43 -11-11-11 000 42 11 18 -12.0 -12.1 28.82 2 4 177 28 001 112 62 42 -11-11-11 000 43 11 19 -11.5 -11.9 28.81 3 5 169 20 000 108 59 42 -11-11-11 000 44 11 20 -10.7 -12.0 28.80 4 6 158 9 001 100 59 42 -11-11-11 000 45 11 21 -10.5 -11.9 28.79 5 7 138 349 001 98 59 43 -11-10-10 000 46 11 22 -10.4 -11.7 28.78 6 8 132 343 001 98 55 45 -11-10-10 000 47 11 23 -10.4 -12.0 28.78 7 9 130 341 000 96 51 43 -10-10-10 000 48 12 00 -10.8 -12.1 28.77 8 9 124 335 001 100 42 40 -10 -9-10 000 49 12 01 -10.9 -12.1 28.76 8 10 121 332 001 100 37 39 -9 -9-10 000 50 12 02 -11.1 -12.4 28.75 8 11 120 331 000 99 35 37 -9 -9-10 000 51 12 03 -11.3 -12.9 28.74 9 12 114 325 001 98 36 36 -9 -9 -9 000 52 12 04 -12.3 -12.6 28.74 9 13 106 317 000 112 37 37 -9 -9 -9 000 53 12 05 -12.0 -12.8 28.73 10 14 110 321 000 107 35 37 -9 -8 -9 000 54 12 06 -12.6 -12.9 28.73 10 15 106 317 001 113 31 36 -9 -8 -9 000 55 12 07 -12.9 -13.5 28.72 10 15 108 319 001 109 30 35 -9 -8 -9 000 56 12 08 -13.8 -14.1 28.72 11 15 109 320 000 114 31 34 -8 -8 -9 000 57 12 09 -13.5 -13.8 28.72 11 15 109 320 000 114 31 33 -8 -8 -9 000 58 12 10 -14.0 -14.3 28.72 11 15 104 315 000 114 32 31 -8 -8 -8 000 59 12 11 -14.0 -14.4 28.72 9 16 101 312 000 114 31 26 -8 -8 -8 000 60 12 12 -14.0 -14.5 28.71 9 18 93 304 000 112 35 26 -8 -7 -8 000 61 12 13 -13.2 -14.0 28.71 10 18 89 300 000 107 30 21 -8 -7 -8 000 62 12 14 -12.5 -14.7 28.72 10 19 85 296 000 92 29 20 -7 -7 -8 000 63 12 15 -11.8 -14.4 28.73 11 19 78 289 000 88 34 34 -7 -7 -8 000 64 12 16 -10.7 -14.3 28.73 11 18 70 281 001 79 30 35 -7 -7 -7 000 65 12 17 -10.2 -14.1 28.73 11 16 59 270 000 75 71102 -6 -6 -7 000 66 12 18 -9.5 -13.0 28.73 11 17 46 257 -004 78102 89 -6 -6 -7 000 67 12 19 -8.8 -10.9 28.73 11 16 36 247 -005 90 97 86 -7 -7 -8 000 68 12 20 -7.9 -9.0 28.74 10 15 29 240 -004 99 97 95 -7 -7 -8 000 69 12 21 -6.5 -7.2 28.74 11 17 23 234 -010 101108 97 -6 -8 -9 000 70 12 22 -5.3 -5.9 28.75 11 19 24 235 -006 100107105 -6 -7 -8 000 71 12 23 -4.9 -6.0 28.76 12 18 16 228 -012 96100111 -6 -7 -8 001 72 13 00 -5.0 -5.7 28.77 9 15 44 255 -001 99107106 -6 -7 -8 015 73 13 01 -4.3 -5.0 28.76 14 20 27 238 000 98106111 -5 -6 -7 004 74 13 02 -3.8 -4.6 28.76 13 19 358 209 -001 97105110 -5 -6 -7 006 75 13 03 -4.0 -4.4 28.76 9 13 0 211 -001 100106110 -5 -6 -7 017 76 13 04 -4.0 -4.6 28.76 9 13 1 212 -002 99106110 -5 -6 -7 007 77 13 05 -3.7 -4.6 28.76 11 14 22 233 -001 96104110 -5 -6 -7 019 78 13 06 -4.0 -4.9 28.77 9 13 41 252 -003 96 90111 -5 -6 -7 005 79 13 07 -4.5 -4.9 28.77 9 13 56 267 -004 101 95111 -5 -6 -7 000 80 13 08 -5.6 -5.8 28.78 9 16 59 270 -006 105 97105 -4 -6 -7 000 81 13 09 -6.1 -6.2 28.77 11 16 48 259 -003 106 92 89 -5 -5 -6 000 82 13 10 -5.2 -5.3 28.78 11 15 33 244 -001 105 97 87 -5 -6 -6 000 83 13 11 -5.8 -5.9 28.78 9 14 29 240 -002 105 85 79 -5 -5 -6 000 84 13 12 -6.9 -7.1 28.78 8 12 27 238 -004 107 82 87 -4 -5 -6 000 85 13 13 -7.3 -7.4 28.79 8 12 29 240 -006 107 87 85 -4 -5 -6 000 86 13 14 -5.9 -6.0 28.79 9 13 27 238 -007 106 93 84 -5 -5 -6 000 87 13 15 -4.9 -5.0 28.80 12 15 18 229 -001 105 91 79 -5 -5 -6 000 88 13 16 -6.0 -6.0 28.80 11 16 14 225 -007 106 95 82 -5 -5 -7 000 89 13 17 -6.2 -6.3 28.81 11 15 16 227 -005 106 90 77 -5 -6 -7 000 90 13 18 -6.0 -6.1 28.82 11 16 21 232 -002 106102 74 -6 -7 -8 000 91 13 19 -4.9 -5.5 28.82 13 16 21 232 -004 99100 78 -6 -7 -8 000 92 13 20 -4.3 -5.7 28.82 11 17 29 240 -002 92 98 94 -5 -6 -8 000 93 13 21 -4.4 -4.6 28.83 12 16 32 243 -004 102106111 -5 -6 -7 002 94 13 22 -3.8 -4.7 28.84 14 16 34 245 -007 95 96111 -5 -6 -7 005 95 13 23 -3.6 -4.9 28.84 12 15 36 247 -003 92 90111 -5 -6 -7 000 96 14 00 -3.7 -4.8 28.84 12 16 39 250 -003 94 89111 -5 -6 -7 000 97 14 01 -3.7 -4.7 28.84 13 18 29 240 -001 95106110 -5 -6 -7 005 98 14 02 -3.6 -5.0 28.84 12 18 17 228 -001 91101107 -5 -6 -7 003 99 14 03 -3.6 -5.0 28.84 11 16 15 226 000 92105102 -5 -6 -7 003 100 14 04 -4.4 -5.6 28.84 11 16 13 224 002 94 94106 -5 -6 -7 003 101 14 05 -5.3 -6.5 28.85 8 14 12 223 -002 95100100 -5 -6 -7 004 102 14 06 -6.3 -6.9 28.85 6 11 25 236 -002 101 91 90 -5 -6 -7 000 103 14 07 -6.9 -7.3 28.85 6 12 40 251 -002 106 88 96 -5 -6 -7 000 104 14 08 -5.9 -6.3 28.85 6 11 31 242 -002 103104 91 -5 -6 -7 001 105 14 09 -5.7 -6.1 28.85 5 9 32 243 -003 103 98 87 -5 -5 -7 000 106 14 10 -6.8 -7.0 28.85 6 9 53 264 -003 106 93 93 -5 -5 -7 000 107 14 11 -4.8 -4.9 28.85 6 11 44 255 -004 104103 96 -4 -6 -7 001 108 14 12 -4.4 -4.4 28.85 5 7 42 253 -003 104105106 -5 -5 -7 005 109 14 13 -4.7 -4.8 28.86 7 9 16 227 001 104104 98 -5 -6 -7 040 110 14 14 -4.6 -4.7 28.85 8 10 10 221 000 104106 95 -5 -6 -7 001 111 14 15 -4.7 -4.7 28.85 5 8 341 192 000 104 99 95 -6 -6 -7 000 112 14 16 -4.1 -4.8 28.86 5 9 358 209 -003 98107 90 -5 -6 -8 000 113 14 17 -4.1 -5.3 28.87 7 10 356 207 000 94107 93 -5 -7 -8 000 114 14 18 -4.2 -5.3 28.88 7 10 14 225 000 95107110 -5 -7 -7 000 115 14 19 -3.9 -5.1 28.88 8 11 18 229 -002 94102111 -5 -6 -7 000 116 14 20 -3.7 -4.8 28.88 10 15 28 239 002 94 97111 -5 -6 -7 013 117 14 21 -3.6 -3.6 28.88 11 15 37 248 000 103106111 -5 -6 -7 000 118 14 22 -3.6 -4.8 28.88 14 17 18 229 -003 93106110 -5 -6 -7 000 119 14 23 -3.9 -5.3 28.88 13 19 14 225 -004 92102 77 -5 -6 -7 000 120 15 00 -4.3 -5.1 28.89 12 16 14 225 -001 97107 94 -6 -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.