USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072912 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 12 -29.3 -32.5 28.66 4 4 118 329 -002 071066076 M26M23M23 000 01 29 13 -31.1 -32.9 28.66 4 5 120 331 -004 084068074 M24M23M23 000 02 29 14 -30.8 -32.5 28.64 5 8 151 2 -013 086067064 M25M23M23 000 03 29 15 -32.0 -33.2 28.64 6 8 143 354 -001 090068055 M24M23M23 000 04 29 16 -32.2 -33.0 28.63 6 8 132 343 -009 092068049 M24M23M23 000 05 29 17 -31.7 -32.5 28.63 6 7 126 337 -002 092069047 M24M23M23 000 06 29 18 -30.9 -31.9 28.62 5 7 131 342 -023 091070042 M24M23M23 000 07 29 19 -30.4 -31.8 28.60 5 7 150 1 -011 088070038 M24M22M22 000 08 29 20 -31.4 -33.0 28.59 6 8 166 17 002 086069038 M24M22M22 000 09 29 21 -32.9 -34.7 28.59 7 10 163 14 002 084069040 M24M22M22 000 10 29 22 -33.8 -36.1 28.58 7 11 169 20 -014 080063044 M24M22M22 000 11 29 23 -34.6 -37.4 28.55 8 11 170 21 -024 076054050 M24M22M21 000 12 30 00 -35.4 -38.5 28.53 9 12 161 12 -020 074049052 M25M22M21 000 13 30 01 -35.0 -38.5 28.51 9 13 159 10 -012 071046046 M25M22M21 000 14 30 02 -34.6 -38.2 28.48 8 11 156 7 -016 070039045 M24M22M21 000 15 30 03 -34.1 -38.0 28.46 7 10 145 356 -018 068040045 M24M21M21 000 16 30 04 -34.2 -38.2 28.44 7 10 139 350 -022 067043054 M24M22M21 000 17 30 05 -33.9 -37.9 28.42 7 10 139 350 -036 067042056 M23M21M21 000 18 30 06 -34.6 -38.3 28.41 8 11 138 349 -014 069054047 M23M22M21 000 19 30 07 -34.5 -37.9 28.38 8 11 134 345 -005 071051050 M23M21M20 000 20 30 08 -34.3 -37.5 28.35 8 11 128 339 001 073045048 M23M21M20 000 21 30 09 -34.8 -37.8 28.32 8 12 121 332 008 074045044 M23M21M20 000 22 30 10 -35.3 -38.0 28.29 10 13 102 313 031 076048041 M23M21M19 000 23 30 11 -34.6 -37.2 28.26 12 16 87 298 028 077052040 M23M21M20 000 24 30 12 -33.5 -36.3 28.23 13 18 77 288 064 076054037 M22M21M20 000 25 30 13 -33.5 -36.2 28.22 12 18 71 282 044 077054036 M22M20M20 000 26 30 14 -33.6 -36.1 28.20 12 17 67 278 056 078054036 M22M20M20 000 27 30 15 -33.6 -36.2 28.18 11 15 63 274 012 078055038 M22M21M20 000 28 30 16 -33.4 -36.0 28.16 10 14 62 273 010 077056039 M22M21M20 000 29 30 17 -32.9 -35.6 28.14 9 12 65 276 -019 077057042 M22M21M21 000 30 30 18 -32.7 -35.4 28.12 9 12 68 279 -029 077055044 M22M21M21 000 31 30 19 -32.9 -35.7 28.11 10 13 72 283 -005 077053047 M22M21M21 000 32 30 20 -33.2 -35.4 28.09 11 14 76 287 009 081053051 M22M21M21 000 33 30 21 -33.3 -35.1 28.08 11 15 78 289 011 083054054 M22M22M21 000 34 30 22 -32.8 -35.1 28.06 10 13 85 296 025 080055055 M22M21M21 000 35 30 23 -33.7 -37.5 28.04 11 15 87 298 032 069037048 M22M21M20 000 36 31 00 -34.4 -39.4 28.03 13 19 82 293 036 060036046 M22M20M20 000 37 31 01 -35.0 -39.6 28.01 14 22 78 289 060 063036048 M22M20M20 000 38 31 02 -35.1 -39.6 27.99 14 21 69 280 059 064036044 M21M19M20 000 39 31 03 -36.1 -39.8 27.99 15 22 64 275 022 068037044 M23M20M20 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.