USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072612 AMPS thwaites domain 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) (*) 00 26 12 -39.3 -43.9 28.22 5 7 20 231 -008 065056040 M34M29M28 000 01 26 13 -40.1 -43.3 28.19 5 6 26 237 -005 071053041 M30M28M27 000 02 26 14 -38.6 -41.7 28.17 4 4 66 277 009 072057044 M31M29M28 000 03 26 15 -40.3 -42.9 28.19 8 8 56 267 006 076060046 M32M30M28 000 04 26 16 -42.9 -45.1 28.16 11 14 49 260 -029 078058047 M31M29M27 000 05 26 17 -42.8 -44.9 28.15 12 16 46 257 -019 080054046 M30M28M26 000 06 26 18 -42.4 -44.2 28.14 12 17 43 254 -015 082052042 M29M27M26 000 07 26 19 -41.9 -43.4 28.14 11 15 42 253 -006 085052036 M29M27M26 000 08 26 20 -40.8 -42.0 28.16 9 11 53 264 001 089055031 M28M28M27 000 09 26 21 -40.3 -41.3 28.16 9 11 69 280 012 090061027 M29M28M27 000 10 26 22 -40.3 -41.4 28.15 10 13 62 273 059 089059033 M29M27M26 000 11 26 23 -40.1 -41.2 28.14 10 14 53 264 003 089058032 M28M26M25 000 12 27 00 -39.3 -40.3 28.13 8 11 46 257 -027 091058032 M28M26M24 000 13 27 01 -37.8 -38.8 28.14 7 9 62 273 -031 091060035 M28M26M25 000 14 27 02 -35.7 -37.0 28.14 5 6 67 278 000 088057037 M27M25M24 000 15 27 03 -35.4 -36.8 28.15 6 7 105 316 001 087059035 M28M26M25 000 16 27 04 -35.3 -36.6 28.15 5 7 95 306 007 087054032 M27M25M24 000 17 27 05 -34.6 -36.2 28.15 5 6 64 275 -003 085055035 M27M26M25 000 18 27 06 -34.7 -36.2 28.16 4 4 9 219 -010 086060042 M29M27M26 000 19 27 07 -35.6 -36.8 28.16 4 5 314 165 014 089059045 M30M27M26 000 20 27 08 -36.5 -37.4 28.17 6 7 322 173 008 091060040 M30M27M26 000 21 27 09 -38.8 -39.6 28.18 9 11 331 182 -002 092061038 M29M27M26 000 22 27 10 -40.1 -41.2 28.19 10 14 334 185 -013 089066038 M30M28M26 000 23 27 11 -41.1 -42.3 28.21 10 14 345 196 -016 088074040 M32M29M27 000 24 27 12 -42.0 -43.3 28.22 12 16 3 214 006 088077046 M33M30M28 000 25 27 13 -42.9 -44.4 28.24 13 20 15 226 001 085073045 M33M29M27 000 26 27 14 -43.6 -44.9 28.26 15 22 19 230 -015 087069044 M33M29M27 000 27 27 15 -44.1 -45.4 28.29 15 23 23 234 -044 087065044 M33M28M27 000 28 27 16 -44.1 -45.4 28.31 16 23 27 238 -049 087058044 M33M28M26 000 29 27 17 -44.0 -45.3 28.33 16 24 32 243 -050 086052037 M32M28M26 000 30 27 18 -43.8 -45.2 28.35 17 25 35 246 -060 086049035 M32M27M26 000 31 27 19 -43.6 -45.0 28.37 17 25 36 247 -065 086048041 M32M27M26 000 32 27 20 -43.3 -44.6 28.40 16 24 36 247 -069 086046048 M31M27M25 000 33 27 21 -42.8 -44.1 28.42 16 24 34 245 -068 087044049 M30M26M25 000 34 27 22 -42.0 -43.4 28.43 15 22 35 246 -087 087043049 M29M26M25 000 35 27 23 -41.1 -42.4 28.44 14 20 35 246 -094 088044049 M29M26M25 000 36 28 00 -40.3 -41.6 28.46 13 18 35 246 -088 088047048 M29M26M26 000 37 28 01 -39.7 -41.0 28.47 12 16 36 247 -049 088049046 M28M26M26 000 38 28 02 -39.1 -40.4 28.48 11 14 37 248 -021 087050044 M27M26M26 000 39 28 03 -38.3 -39.8 28.49 10 12 40 251 -012 086051042 M27M26M26 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.