USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072800 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 28 00 -35.2 -39.6 28.50 5 6 35 246 -009 063047041 M31M27M25 000 01 28 01 -36.9 -40.9 28.49 7 8 59 270 015 066039041 M26M24M24 000 02 28 02 -35.1 -39.7 28.53 8 10 57 268 -010 062039041 M25M25M25 000 03 28 03 -34.3 -39.1 28.56 8 10 63 274 -087 062037039 M25M25M25 000 04 28 04 -33.5 -38.7 28.56 8 9 73 283 -078 060034042 M24M24M24 000 05 28 05 -33.3 -38.7 28.57 8 9 86 297 -050 058032045 M24M23M23 000 06 28 06 -32.6 -38.3 28.58 8 9 101 312 -012 057031044 M23M22M22 000 07 28 07 -32.0 -38.0 28.59 8 11 97 308 -002 055031046 M22M22M22 000 08 28 08 -31.7 -37.8 28.60 9 12 101 312 -023 055031046 M21M21M21 000 09 28 09 -31.6 -37.8 28.60 9 14 112 323 -016 054030044 M21M20M20 000 10 28 10 -31.2 -37.6 28.60 10 15 123 334 -006 053029039 M20M19M19 000 11 28 11 -31.0 -37.5 28.60 10 15 126 337 003 053026034 M19M18M19 000 12 28 12 -30.5 -37.5 28.60 10 14 135 346 050 051024031 M19M18M18 000 13 28 13 -30.4 -37.2 28.60 10 15 144 355 075 051022028 M19M17M17 000 14 28 14 -29.7 -36.6 28.60 9 13 147 358 074 051021025 M19M17M17 000 15 28 15 -28.1 -35.9 28.59 7 10 154 5 049 047022023 M19M17M17 000 16 28 16 -27.0 -35.5 28.58 6 9 173 24 017 045023025 M18M18M18 000 17 28 17 -26.1 -35.3 28.57 5 8 181 32 -036 042022024 M18M17M18 000 18 28 18 -25.9 -35.3 28.57 4 6 183 34 -029 041023023 M18M18M18 000 19 28 19 -25.7 -35.4 28.57 3 4 198 49 -035 040024024 M18M18M19 000 20 28 20 -24.9 -35.3 28.57 1 2 257 108 -004 037025026 M19M19M19 000 21 28 21 -27.5 -35.9 28.58 7 7 358 209 008 045025028 M20M19M18 000 22 28 22 -30.3 -36.5 28.59 8 10 353 204 032 055024030 M20M18M18 000 23 28 23 -31.3 -37.1 28.60 8 9 12 223 031 057026030 M21M19M19 000 24 29 00 -29.8 -36.5 28.60 7 8 336 187 013 052027030 M21M20M19 000 25 29 01 -34.0 -38.4 28.61 9 10 355 206 005 064028030 M22M20M20 000 26 29 02 -32.4 -37.8 28.62 7 10 342 193 033 059031034 M23M22M21 000 27 29 03 -30.3 -37.0 28.62 6 10 284 135 032 052031043 M23M22M21 000 28 29 04 -31.0 -37.0 28.63 6 10 283 134 031 056031045 M24M22M21 000 29 29 05 -33.9 -38.4 28.64 7 8 342 193 026 064037040 M25M23M23 000 30 29 06 -34.2 -38.3 28.65 5 8 358 209 019 066046037 M26M25M24 000 31 29 07 -31.0 -36.3 28.66 4 7 308 159 000 060047034 M26M25M24 000 32 29 08 -30.4 -35.9 28.66 5 7 304 155 -002 058041035 M25M24M23 000 33 29 09 -31.6 -36.5 28.67 7 9 320 171 -014 062040038 M25M24M23 000 34 29 10 -30.8 -36.1 28.66 6 9 308 159 -014 060043041 M24M24M24 000 35 29 11 -29.9 -35.3 28.65 5 8 283 134 -013 059051043 M24M24M24 000 36 29 12 -30.0 -34.9 28.65 4 6 260 111 -012 062062047 M25M24M24 000 37 29 13 -30.3 -34.8 28.65 3 5 231 82 -019 065074052 M24M23M24 000 38 29 14 -30.0 -34.2 28.65 2 4 228 79 -017 066080056 M24M23M24 000 39 29 15 -29.5 -33.3 28.65 2 4 226 77 -015 070082058 M24M23M24 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.