USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072900 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 29 00 -26.3 -31.4 28.64 8 8 311 162 -001 067074072 M25M24M22 000 01 29 01 -29.6 -33.1 28.66 8 11 329 180 -001 071072075 M25M23M22 005 02 29 02 -30.6 -33.7 28.66 8 11 341 192 -007 074068076 M24M23M23 006 03 29 03 -30.8 -33.6 28.65 8 12 343 194 013 077069072 M24M23M23 006 04 29 04 -31.2 -33.6 28.68 9 12 350 201 -012 080071075 M24M24M23 001 05 29 05 -31.8 -33.9 28.69 9 12 357 208 -004 082072079 M24M24M24 000 06 29 06 -32.1 -34.0 28.69 8 10 5 216 000 083076080 M24M24M24 000 07 29 07 -31.4 -33.1 28.71 8 9 6 217 015 085078077 M24M24M24 000 08 29 08 -29.9 -31.5 28.72 6 7 7 218 006 087082072 M24M24M24 000 09 29 09 -29.2 -30.7 28.73 5 6 13 224 -015 087086071 M24M25M24 000 10 29 10 -28.3 -29.7 28.72 3 4 25 236 -010 088088071 M25M24M24 000 11 29 11 -28.1 -29.3 28.71 3 4 133 344 -030 090088070 M25M24M24 000 12 29 12 -30.4 -31.0 28.71 6 7 123 334 -020 095085070 M25M23M23 000 13 29 13 -31.6 -32.5 28.70 7 9 111 322 -008 091086063 M24M24M24 000 14 29 14 -31.8 -33.3 28.69 8 10 109 320 -030 086083062 M24M23M24 000 15 29 15 -31.9 -33.8 28.70 8 11 111 322 -006 084078060 M24M23M24 000 16 29 16 -32.2 -34.3 28.68 9 12 118 329 -004 082073055 M24M23M23 000 17 29 17 -31.7 -34.3 28.67 8 11 117 328 002 078069054 M23M23M23 000 18 29 18 -30.9 -34.0 28.65 7 10 125 336 -000 074064050 M23M22M22 000 19 29 19 -31.4 -34.6 28.64 7 10 143 354 -020 073062047 M23M22M22 000 20 29 20 -32.6 -35.6 28.63 8 11 154 5 -003 075061045 M24M22M22 000 21 29 21 -33.4 -36.3 28.62 9 12 154 5 -001 075059047 M24M22M22 000 22 29 22 -33.3 -36.6 28.60 9 12 149 360 003 072057050 M24M22M22 000 23 29 23 -32.4 -36.4 28.57 8 11 153 4 001 067058053 M23M22M21 000 24 30 00 -31.8 -36.2 28.55 7 10 165 16 -008 065059056 M23M22M21 000 25 30 01 -32.4 -36.5 28.54 7 10 171 22 -027 067055057 M24M22M21 000 26 30 02 -32.4 -36.5 28.52 6 8 170 21 -022 067052055 M24M22M21 000 27 30 03 -31.8 -36.1 28.51 5 7 164 15 009 066048049 M24M22M21 000 28 30 04 -31.4 -35.9 28.48 5 7 156 7 002 064047048 M23M22M21 000 29 30 05 -31.3 -35.8 28.46 5 7 141 352 -004 064048049 M24M22M21 000 30 30 06 -31.1 -35.4 28.44 5 6 119 330 -009 065049048 M23M22M21 000 31 30 07 -31.3 -35.3 28.43 6 8 96 307 -005 068051046 M23M22M21 000 32 30 08 -32.0 -35.4 28.41 8 9 79 290 -012 072050047 M23M21M20 000 33 30 09 -32.3 -35.6 28.39 9 11 73 284 -005 073047049 M22M21M20 000 34 30 10 -31.5 -34.9 28.36 9 11 72 283 -023 072044054 M21M20M19 000 35 30 11 -30.7 -34.4 28.33 9 11 72 283 -024 070042057 M20M19M19 000 36 30 12 -30.2 -34.1 28.31 9 11 77 288 -014 069043058 M20M20M19 000 37 30 13 -30.3 -33.7 28.29 9 12 81 292 -015 072045054 M20M20M19 000 38 30 14 -30.8 -33.2 28.27 10 14 81 292 -017 080047054 M21M20M19 000 39 30 15 -30.9 -32.9 28.26 11 15 76 287 -051 083049055 M21M20M19 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.