USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025073100 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 31 00 -35.3 -40.0 27.90 11 12 124 335 -003 064050024 M32M29M27 000 01 31 01 -39.8 -42.8 27.85 9 12 113 324 -006 072041024 M30M27M25 000 02 31 02 -39.1 -42.3 27.84 11 15 79 290 -019 072043024 M29M27M25 000 03 31 03 -38.9 -42.3 27.82 15 22 53 264 -006 070046024 M29M26M24 000 04 31 04 -39.5 -42.9 27.82 16 24 39 250 043 070048030 M27M24M23 000 05 31 05 -40.0 -43.0 27.83 16 24 35 246 111 073048033 M26M23M22 000 06 31 06 -40.2 -42.7 27.83 15 22 34 245 102 078046041 M26M23M21 000 07 31 07 -40.1 -42.4 27.84 14 22 37 248 094 079044047 M26M22M21 000 08 31 08 -39.2 -41.3 27.85 13 19 37 248 061 080042053 M26M22M22 000 09 31 09 -39.6 -41.6 27.88 13 18 47 258 -073 081042052 M27M24M23 000 10 31 10 -38.2 -40.4 27.87 11 15 28 239 -056 080034062 M25M22M23 000 11 31 11 -38.5 -40.5 27.87 11 14 29 240 -020 081037061 M26M24M24 000 12 31 12 -38.3 -40.5 27.87 10 12 19 230 009 080044061 M26M26M25 000 13 31 13 -38.1 -40.5 27.88 10 11 12 223 020 079048055 M27M27M25 000 14 31 14 -38.5 -40.8 27.90 9 10 2 213 -006 079051056 M28M27M25 000 15 31 15 -38.6 -41.0 27.92 9 10 1 212 -011 079052057 M29M27M25 000 16 31 16 -38.8 -41.1 27.93 9 11 1 212 -005 079055057 M29M28M26 000 17 31 17 -40.0 -42.1 27.95 11 14 10 221 -003 080056055 M30M29M27 000 18 31 18 -41.8 -43.8 27.97 13 18 13 224 -002 080054055 M30M28M27 000 19 31 19 -42.0 -43.8 28.00 14 20 14 225 -002 083051054 M31M27M27 000 20 31 20 -42.3 -43.9 28.03 15 22 18 229 -008 084052053 M32M27M26 000 21 31 21 -42.9 -44.5 28.07 16 23 19 230 013 085058053 M33M28M27 000 22 31 22 -43.0 -44.8 28.10 17 25 19 230 002 083056053 M33M28M27 000 23 31 23 -43.0 -45.9 28.13 18 27 15 226 009 074050054 M33M28M26 000 24 01 00 -43.1 -46.2 28.17 18 28 8 219 001 072040054 M34M28M26 001 25 01 01 -43.1 -45.9 28.20 18 28 10 221 -041 074041053 M34M29M27 001 26 01 02 -42.8 -45.3 28.23 18 27 12 223 -051 077047037 M34M30M27 001 27 01 03 -42.6 -44.3 28.26 17 26 14 225 -053 083049042 M34M30M28 001 28 01 04 -42.5 -43.7 28.30 15 24 18 229 -004 088054044 M34M30M28 001 29 01 05 -41.8 -43.1 28.34 15 23 27 238 010 088065046 M34M31M29 000 30 01 06 -41.3 -43.2 28.37 15 23 34 245 015 082069054 M33M31M29 000 31 01 07 -41.0 -43.4 28.39 14 22 37 248 019 078070065 M32M30M29 000 32 01 08 -40.7 -43.3 28.41 14 21 40 251 -004 076070076 M31M29M28 000 33 01 09 -39.8 -42.7 28.44 13 20 45 256 -064 074070083 M30M28M28 000 34 01 10 -39.1 -42.1 28.45 13 19 51 262 -114 073069080 M29M28M28 000 35 01 11 -38.6 -41.7 28.45 13 18 56 267 -106 072067073 M28M27M28 000 36 01 12 -38.2 -41.5 28.45 13 19 64 275 -056 071064063 M27M26M27 000 37 01 13 -37.9 -41.3 28.45 14 22 67 278 -035 071058052 M27M26M26 000 38 01 14 -37.3 -40.7 28.44 16 24 72 283 -018 071042040 M26M25M24 000 39 01 15 -36.1 -39.6 28.42 17 27 72 283 032 070040038 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 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.