USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025073000 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 30 00 -31.6 -37.6 28.49 5 5 192 43 006 058035046 M28M24M23 000 01 30 01 -34.2 -39.6 28.46 6 7 158 9 -002 058035050 M25M23M22 000 02 30 02 -33.9 -39.3 28.45 7 10 155 6 002 058044057 M25M22M21 000 03 30 03 -34.1 -38.6 28.44 8 11 130 341 -019 064052062 M25M22M22 000 04 30 04 -34.2 -37.6 28.40 8 11 110 321 -027 071057063 M25M23M22 000 05 30 05 -34.1 -36.9 28.39 8 11 103 314 -054 076060062 M25M23M22 000 06 30 06 -33.2 -35.9 28.36 7 8 75 286 -019 076055056 M24M22M21 000 07 30 07 -30.9 -34.1 28.35 4 5 60 271 -019 073055053 M24M22M21 000 08 30 08 -29.9 -33.4 28.33 2 3 138 349 024 072056051 M24M23M21 000 09 30 09 -30.8 -33.9 28.32 5 7 152 3 007 074055049 M25M22M21 000 10 30 10 -34.1 -36.4 28.29 8 10 121 332 002 080055047 M25M22M21 000 11 30 11 -35.1 -37.5 28.26 11 15 91 302 -007 079054046 M24M22M21 000 12 30 12 -34.5 -36.7 28.24 12 17 75 286 004 080054048 M23M21M20 000 13 30 13 -33.9 -36.1 28.22 12 18 66 277 030 080054047 M23M21M20 000 14 30 14 -34.4 -36.5 28.21 12 19 65 276 023 081057042 M23M21M20 000 15 30 15 -34.4 -36.6 28.20 13 20 63 274 022 081058041 M23M21M20 000 16 30 16 -34.3 -36.5 28.18 12 19 61 272 024 081059040 M23M21M21 000 17 30 17 -34.1 -36.1 28.16 11 16 68 279 015 082063042 M24M22M22 000 18 30 18 -33.6 -35.2 28.13 9 13 77 288 005 085065040 M24M23M22 000 19 30 19 -33.4 -34.8 28.12 9 12 90 301 007 088069032 M24M24M23 000 20 30 20 -34.0 -35.3 28.09 9 13 94 305 023 088069023 M25M23M23 000 21 30 21 -34.2 -35.7 28.07 9 12 88 299 039 086068021 M24M23M23 000 22 30 22 -33.2 -35.3 28.04 8 10 67 278 010 081062021 M24M23M23 000 23 30 23 -33.4 -35.9 28.02 8 9 43 254 -106 078068021 M24M24M23 000 24 31 00 -35.4 -38.4 28.01 9 10 45 256 -013 074076020 M26M25M24 000 25 31 01 -37.0 -40.8 28.00 11 12 62 273 -004 068075022 M26M25M24 000 26 31 02 -36.8 -41.2 28.00 11 14 61 272 -016 063071024 M26M25M24 000 27 31 03 -37.8 -41.9 27.99 11 15 60 271 001 065062024 M26M25M24 000 28 31 04 -37.5 -41.4 27.98 11 13 56 267 -013 067054045 M26M25M24 000 29 31 05 -38.3 -41.7 27.99 11 13 53 264 -000 070045048 M26M26M24 000 30 31 06 -38.8 -42.1 27.99 10 11 51 262 -047 071043045 M27M26M23 000 31 31 07 -39.4 -42.5 27.99 11 12 51 262 -059 072042042 M28M25M23 000 32 31 08 -39.6 -42.5 27.98 10 12 55 266 -048 073040044 M28M25M22 000 33 31 09 -38.5 -41.7 27.97 9 10 49 260 -047 072041047 M26M24M22 000 34 31 10 -38.2 -41.3 27.98 9 10 60 271 -061 073044042 M27M24M23 000 35 31 11 -36.5 -39.8 27.97 7 7 54 265 -083 072045044 M26M24M22 000 36 31 12 -35.5 -39.0 27.97 6 7 67 278 -091 071048050 M27M25M23 000 37 31 13 -34.7 -38.2 27.96 6 6 72 283 -021 070046053 M27M24M22 000 38 31 14 -33.8 -37.7 27.97 6 6 74 285 015 068048055 M27M24M23 000 39 31 15 -33.5 -37.5 27.97 5 6 83 294 019 067051057 M27M25M24 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.