USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072712 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 27 12 -35.2 -38.8 28.21 9 10 2 213 -010 068067073 M33M31M30 000 01 27 13 -38.3 -41.5 28.24 10 15 20 231 002 071065074 M33M30M29 001 02 27 14 -39.8 -43.0 28.27 13 18 28 239 -009 072063073 M33M30M29 001 03 27 15 -40.4 -43.6 28.30 15 21 32 243 -042 071062063 M33M29M28 001 04 27 16 -40.8 -44.0 28.33 15 22 38 248 -021 072061057 M32M29M27 000 05 27 17 -40.9 -43.9 28.35 16 24 37 248 -009 073062059 M33M29M27 000 06 27 18 -41.3 -44.1 28.39 16 25 40 251 -015 075062057 M33M29M27 000 07 27 19 -41.7 -44.2 28.41 17 25 40 251 -001 077059053 M33M28M26 000 08 27 20 -41.7 -44.1 28.45 16 24 38 249 -020 077056044 M32M28M26 000 09 27 21 -41.3 -43.8 28.47 15 22 35 246 -060 077054044 M32M28M27 000 10 27 22 -40.6 -43.0 28.49 14 21 35 246 -060 077049047 M30M28M27 000 11 27 23 -39.4 -42.1 28.51 13 19 34 245 -051 076047048 M30M28M27 000 12 28 00 -38.6 -41.6 28.52 12 17 35 246 -064 074045046 M29M27M26 000 13 28 01 -38.2 -41.4 28.54 11 15 40 251 -061 072042045 M29M27M26 000 14 28 02 -37.7 -41.1 28.55 10 13 48 259 -079 070042047 M28M26M26 000 15 28 03 -37.3 -40.9 28.57 10 13 62 273 -101 070042048 M28M26M26 000 16 28 04 -36.8 -40.5 28.58 10 14 72 283 -074 069041040 M27M26M26 000 17 28 05 -36.1 -39.8 28.59 10 14 76 287 -059 069039034 M26M25M25 000 18 28 06 -35.4 -39.3 28.60 10 14 80 291 -052 068036038 M25M25M24 000 19 28 07 -35.1 -39.2 28.60 10 14 82 293 -027 066035037 M25M24M24 000 20 28 08 -34.8 -39.0 28.62 11 15 83 294 -019 065036036 M25M24M23 000 21 28 09 -34.1 -38.7 28.62 10 14 81 292 -022 063038034 M24M23M23 000 22 28 10 -33.5 -38.5 28.63 10 13 80 291 -016 061039033 M23M23M22 000 23 28 11 -32.0 -37.6 28.64 9 12 78 289 -021 058040033 M23M22M22 000 24 28 12 -29.2 -36.3 28.64 6 8 85 296 -008 050038031 M22M21M21 000 25 28 13 -27.5 -35.6 28.64 4 6 115 326 -016 046037030 M21M21M21 000 26 28 14 -27.5 -35.7 28.65 5 7 136 347 006 046034030 M22M21M21 000 27 28 15 -28.7 -36.1 28.65 6 9 145 356 036 049030030 M21M21M21 000 28 28 16 -28.6 -36.4 28.65 6 9 146 357 030 047026028 M21M20M21 000 29 28 17 -28.2 -36.6 28.65 6 10 153 4 017 045025027 M21M20M20 000 30 28 18 -28.0 -36.6 28.65 6 9 158 9 -001 044028039 M21M20M20 000 31 28 19 -27.4 -36.2 28.64 5 8 164 15 -007 043026053 M20M20M20 000 32 28 20 -27.4 -36.2 28.64 5 6 154 5 006 043023059 M21M20M20 000 33 28 21 -27.8 -36.5 28.64 3 5 190 41 029 043023060 M21M20M20 000 34 28 22 -28.1 -36.8 28.64 3 3 294 145 015 044027066 M22M21M20 000 35 28 23 -29.0 -37.0 28.64 4 6 296 147 011 046030065 M23M22M21 000 36 29 00 -31.1 -37.8 28.65 6 8 301 152 006 052033065 M24M23M21 000 37 29 01 -32.1 -38.2 28.65 7 9 291 142 014 055034064 M24M23M22 000 38 29 02 -32.5 -38.1 28.64 8 11 288 139 012 057033065 M24M22M22 000 39 29 03 -32.6 -38.1 28.65 8 11 286 137 023 058034064 M25M23M22 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.