USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025073100 AMPS 2p67km 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 31 00 -35.4 -39.8 27.89 11 13 122 333 -003 064050025 M32M29M27 000 01 31 01 -39.8 -42.8 27.84 9 12 111 322 -005 072042024 M30M27M25 000 02 31 02 -39.1 -42.3 27.84 11 15 78 289 -017 072043023 M29M27M25 000 03 31 03 -39.0 -42.4 27.82 14 21 52 263 -009 070046024 M29M26M24 000 04 31 04 -39.3 -42.6 27.85 15 22 40 251 032 071048031 M27M24M23 000 05 31 05 -39.6 -42.8 27.81 15 23 37 248 096 072048035 M26M23M22 000 06 31 06 -39.8 -43.0 27.84 14 21 32 243 077 072046042 M26M23M22 000 07 31 07 -40.1 -43.2 27.86 14 21 35 246 059 072045050 M27M23M21 000 08 31 08 -39.0 -42.0 27.86 13 18 37 248 039 073042060 M26M22M22 000 09 31 09 -39.5 -42.5 27.88 13 19 50 261 -069 073044061 M27M24M23 000 10 31 10 -38.2 -41.2 27.86 11 15 28 239 -029 073037063 M25M22M22 000 11 31 11 -38.5 -41.6 27.86 11 15 26 237 -011 073039063 M26M24M24 000 12 31 12 -38.4 -41.6 27.87 10 13 18 229 009 072046063 M26M26M25 000 13 31 13 -37.8 -41.1 27.90 10 11 17 228 012 072049056 M27M27M25 000 14 31 14 -37.9 -41.2 27.89 10 12 9 220 -002 071051056 M28M27M25 000 15 31 15 -38.6 -41.9 27.93 10 14 4 215 -006 071051058 M28M27M26 000 16 31 16 -38.9 -42.2 27.93 10 13 4 215 -013 071054058 M28M27M26 000 17 31 17 -39.6 -42.9 27.96 11 15 13 224 -008 071054056 M29M28M27 000 18 31 18 -41.5 -45.0 27.98 13 19 16 227 -005 069055053 M30M28M28 000 19 31 19 -42.0 -45.5 28.00 14 21 16 227 007 069053052 M31M27M27 000 20 31 20 -42.3 -45.8 28.03 15 22 20 231 023 069053052 M32M27M27 000 21 31 21 -42.7 -46.1 28.07 16 23 19 230 019 069056054 M32M28M27 000 22 31 22 -42.8 -46.1 28.10 17 25 20 231 -002 070054055 M32M28M27 000 23 31 23 -43.1 -46.6 28.11 19 28 15 226 003 068047054 M34M28M26 000 24 01 00 -43.0 -46.5 28.17 18 29 8 219 -004 069039055 M34M28M26 000 25 01 01 -43.0 -46.4 28.19 18 28 8 219 -039 069039047 M34M29M26 000 26 01 02 -42.8 -46.2 28.23 17 26 11 222 -049 069043042 M34M29M27 000 27 01 03 -42.7 -46.1 28.26 17 26 11 222 -074 069047043 M35M30M27 000 28 01 04 -42.4 -45.8 28.32 15 24 17 228 -049 070054046 M35M31M29 000 29 01 05 -41.9 -45.2 28.36 14 22 28 239 -025 070061041 M35M31M29 000 30 01 06 -41.5 -44.6 28.38 14 22 35 246 -011 071064050 M34M31M30 000 31 01 07 -41.0 -44.2 28.39 15 23 37 248 -006 071066067 M32M30M29 000 32 01 08 -40.6 -43.9 28.41 14 22 37 248 -018 071063072 M31M29M28 000 33 01 09 -40.1 -43.4 28.44 13 20 41 252 -037 071061066 M30M28M28 000 34 01 10 -39.4 -42.7 28.46 13 19 47 258 -064 071059065 M29M28M28 000 35 01 11 -38.6 -41.9 28.46 12 17 56 267 -115 071057060 M27M27M27 000 36 01 12 -38.1 -41.6 28.47 13 19 61 272 -081 070056062 M27M27M27 000 37 01 13 -37.6 -41.3 28.47 14 21 70 281 -074 068055053 M26M26M26 000 38 01 14 -36.8 -40.8 28.45 16 24 75 286 -016 067052039 M26M25M25 000 39 01 15 -35.3 -39.4 28.44 17 27 75 286 049 066041048 M25M23M23 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 1h) 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.