USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025073112 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 12 -34.9 -38.4 27.84 5 7 13 223 -005 063056066 M28M25M25 000 01 31 13 -35.1 -38.5 27.85 5 5 14 224 -009 071054062 M26M25M24 000 02 31 14 -33.6 -37.3 27.87 3 3 358 209 014 069058066 M28M26M25 000 03 31 15 -34.2 -37.9 27.89 4 4 353 204 -017 069059071 M28M25M25 000 04 31 16 -36.4 -40.0 27.91 7 8 5 216 004 070062075 M29M26M25 000 05 31 17 -36.7 -40.4 27.91 10 12 8 219 -011 069065076 M29M27M26 000 06 31 18 -38.4 -42.0 27.94 13 19 7 218 000 069062075 M29M26M25 000 07 31 19 -39.3 -42.7 27.99 15 21 8 219 013 070057076 M29M25M25 000 08 31 20 -40.0 -43.4 28.02 15 21 9 220 -029 070055076 M29M26M25 000 09 31 21 -39.8 -43.3 28.04 15 22 5 216 017 070055077 M31M26M25 000 10 31 22 -39.4 -42.9 28.09 15 22 9 220 030 069059077 M32M28M27 001 11 31 23 -39.4 -43.0 28.14 15 21 9 220 042 069061074 M32M28M28 002 12 01 00 -39.5 -43.0 28.16 15 23 9 220 026 070060073 M33M29M28 002 13 01 01 -39.7 -43.3 28.22 16 23 9 220 011 069059075 M33M29M28 003 14 01 02 -40.2 -43.7 28.26 16 24 10 221 -014 069054075 M33M29M27 003 15 01 03 -40.9 -44.4 28.29 14 22 11 222 -027 069056057 M32M29M27 001 16 01 04 -41.2 -44.5 28.34 14 20 12 223 -037 070058050 M32M28M28 000 17 01 05 -41.3 -44.6 28.39 13 19 16 227 -029 070055056 M32M29M28 000 18 01 06 -41.0 -44.3 28.41 12 18 17 228 006 071053053 M31M29M29 000 19 01 07 -40.9 -44.1 28.45 12 17 20 231 001 071055053 M32M30M30 000 20 01 08 -40.7 -43.9 28.48 11 15 27 238 067 072060051 M31M31M30 000 21 01 09 -40.3 -43.4 28.52 11 13 34 245 057 072060049 M31M31M29 000 22 01 10 -39.9 -42.8 28.53 11 14 37 248 -010 073056050 M31M29M28 000 23 01 11 -39.3 -42.3 28.54 11 14 49 260 006 073051056 M29M28M26 000 24 01 12 -38.8 -41.8 28.53 12 17 54 265 -025 073046059 M28M26M26 000 25 01 13 -38.4 -41.7 28.54 14 21 59 270 -039 071043058 M27M24M24 000 26 01 14 -37.8 -41.4 28.55 15 24 65 276 -029 069042055 M25M23M23 000 27 01 15 -37.1 -41.0 28.54 17 26 69 280 011 067040047 M23M22M22 000 28 01 16 -36.0 -40.4 28.54 18 29 68 279 041 064039032 M24M22M21 000 29 01 17 -34.8 -39.9 28.54 20 32 67 278 043 060037025 M23M20M20 000 30 01 18 -33.4 -38.7 28.52 20 33 65 276 060 059032022 M22M20M19 000 31 01 19 -31.6 -36.7 28.49 20 34 66 277 044 061017054 M20M18M18 000 32 01 20 -30.1 -36.1 28.49 20 34 67 278 061 056023070 M20M18M17 000 33 01 21 -28.9 -36.3 28.49 18 31 71 282 025 049023080 M18M17M17 000 34 01 22 -28.2 -35.8 28.48 19 31 66 277 002 048043080 M18M17M17 000 35 01 23 -28.0 -33.9 28.47 17 27 72 283 059 057065068 M17M17M18 000 36 02 00 -27.7 -31.4 28.43 15 24 72 283 099 071060076 M16M16M17 000 37 02 01 -26.2 -29.9 28.41 15 23 75 286 025 071061067 M16M16M17 000 38 02 02 -25.6 -28.4 28.38 16 24 76 287 019 078061070 M16M16M16 000 39 02 03 -24.8 -28.0 28.35 14 22 74 285 061 075059076 M16M17M17 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.