USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072812 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 12 -23.9 -35.5 28.55 6 7 164 15 003 046025030 M22M20M19 000 01 28 13 -27.1 -35.4 28.54 6 7 143 354 005 045021029 M20M18M18 001 02 28 14 -26.0 -35.9 28.53 4 6 134 345 012 039022030 M19M18M18 001 03 28 15 -25.1 -36.0 28.55 1 2 63 274 000 036024031 M20M19M19 001 04 28 16 -24.7 -35.9 28.56 3 3 333 184 -016 035025032 M20M19M19 000 05 28 17 -28.2 -36.6 28.55 8 9 329 180 -002 045025034 M20M19M19 000 06 28 18 -29.0 -36.6 28.57 9 13 322 173 -013 048025035 M20M19M19 000 07 28 19 -29.4 -36.5 28.57 9 14 314 165 001 050025036 M20M20M19 000 08 28 20 -29.5 -36.3 28.60 9 14 308 159 -025 052027039 M21M20M20 000 09 28 21 -29.9 -36.0 28.60 9 15 312 163 -018 055030042 M22M21M20 000 10 28 22 -30.5 -35.8 28.61 10 15 320 171 011 060038044 M22M21M21 000 11 28 23 -30.7 -35.6 28.63 10 16 320 171 008 062048043 M22M21M21 000 12 29 00 -31.1 -35.5 28.64 10 15 321 172 002 065050042 M22M22M21 000 13 29 01 -31.1 -35.1 28.65 9 14 325 176 009 068050043 M23M22M22 000 14 29 02 -30.9 -34.7 28.66 9 13 324 175 024 069050047 M23M22M22 000 15 29 03 -30.0 -33.8 28.68 8 12 322 173 029 069053053 M23M22M23 001 16 29 04 -29.2 -33.1 28.69 7 10 327 178 007 069056058 M23M23M23 001 17 29 05 -28.7 -32.6 28.69 7 9 326 177 013 069058063 M23M23M23 001 18 29 06 -28.4 -32.3 28.70 6 8 321 172 -004 069058066 M24M23M23 001 19 29 07 -28.4 -32.2 28.71 6 8 310 161 006 070059067 M24M23M23 001 20 29 08 -28.0 -31.6 28.71 4 6 300 151 -018 071062068 M25M24M24 001 21 29 09 -28.0 -31.3 28.72 4 6 288 139 -020 074067071 M25M24M24 001 22 29 10 -28.2 -31.1 28.71 2 4 253 104 -023 076075072 M25M24M24 001 23 29 11 -28.3 -31.1 28.70 2 3 191 42 -012 076079071 M25M24M24 001 24 29 12 -28.2 -31.1 28.70 2 2 175 26 -023 076081071 M24M24M24 001 25 29 13 -28.0 -31.0 28.70 1 2 161 12 -023 075082071 M24M24M24 001 26 29 14 -27.9 -31.0 28.69 1 2 128 339 -022 075083070 M24M24M24 000 27 29 15 -28.2 -31.2 28.70 1 2 69 280 -021 076084069 M24M24M24 000 28 29 16 -28.2 -31.1 28.68 1 2 109 320 -020 077084069 M24M24M24 000 29 29 17 -28.7 -31.2 28.68 3 4 141 352 -015 079084071 M24M24M24 000 30 29 18 -29.5 -32.1 28.68 5 6 133 344 -009 079081072 M24M23M23 000 31 29 19 -29.9 -32.6 28.67 6 7 131 342 -014 077075069 M24M23M23 000 32 29 20 -29.8 -32.9 28.65 6 8 129 340 -011 074069065 M23M23M23 000 33 29 21 -30.2 -33.5 28.65 7 9 121 332 -009 073064063 M23M22M23 000 34 29 22 -29.7 -33.1 28.63 7 9 117 328 -015 073057060 M23M22M22 000 35 29 23 -29.4 -32.9 28.61 7 8 115 326 -019 072053054 M22M22M22 000 36 30 00 -29.3 -32.9 28.59 6 8 117 328 -013 071052050 M22M21M22 000 37 30 01 -29.3 -33.2 28.58 7 9 132 343 -010 069051052 M22M21M21 000 38 30 02 -30.4 -34.1 28.57 7 11 141 352 -004 070049055 M23M22M21 000 39 30 03 -31.4 -35.1 28.55 8 12 146 357 -006 070045051 M23M21M21 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.