USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025073012 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 30 12 -29.0 -34.9 28.19 12 12 109 320 -007 059039034 M25M21M20 000 01 30 13 -32.7 -37.1 28.22 14 21 120 331 -022 065036031 M25M22M21 000 02 30 14 -34.3 -38.3 28.16 16 27 102 313 004 067032034 M25M21M20 000 03 30 15 -34.8 -38.2 28.14 17 28 91 302 039 071032037 M25M21M20 000 04 30 16 -34.6 -38.2 28.11 17 27 89 300 035 070035037 M26M22M21 000 05 30 17 -35.0 -39.0 28.07 14 23 92 303 092 067033035 M27M23M21 000 06 30 18 -35.4 -39.7 28.05 14 24 100 311 090 065029033 M27M23M21 000 07 30 19 -36.1 -40.3 28.02 14 24 102 313 090 065023029 M28M24M22 000 08 30 20 -37.5 -41.6 28.00 13 23 100 311 061 065027025 M29M25M23 000 09 30 21 -37.9 -42.3 27.96 13 22 96 307 046 063026021 M28M25M23 000 10 30 22 -38.1 -42.5 27.92 13 20 95 306 -015 063027020 M27M24M23 000 11 30 23 -38.6 -42.8 27.90 12 18 71 282 -044 064033020 M29M25M24 000 12 31 00 -38.3 -42.4 27.90 13 19 44 255 007 065036021 M28M25M24 000 13 31 01 -38.7 -42.3 27.89 14 21 43 254 -022 069045024 M28M25M23 000 14 31 02 -39.5 -42.7 27.88 15 22 47 258 012 072062026 M28M25M24 000 15 31 03 -39.8 -43.1 27.88 14 22 49 260 083 071067039 M28M24M23 000 16 31 04 -39.7 -42.8 27.90 14 21 47 258 063 072061045 M27M24M23 000 17 31 05 -40.2 -43.4 27.89 15 22 44 255 045 071051045 M28M24M23 000 18 31 06 -41.3 -44.7 27.90 15 22 42 253 010 069047052 M29M24M23 000 19 31 07 -41.2 -44.6 27.90 15 22 37 248 -007 069044051 M29M24M24 000 20 31 08 -41.0 -44.5 27.89 14 21 32 243 -057 069044051 M29M25M24 000 21 31 09 -41.9 -45.5 27.92 14 20 33 244 -051 068049051 M30M26M26 000 22 31 10 -42.6 -46.1 27.92 14 21 32 243 -026 068049049 M30M26M26 000 23 31 11 -42.9 -46.4 27.93 15 22 35 246 -022 068052042 M31M27M26 000 24 31 12 -42.6 -46.0 27.94 15 22 31 242 -003 069053040 M30M26M26 000 25 31 13 -42.3 -45.7 27.95 14 21 31 242 -034 070055040 M31M26M25 000 26 31 14 -41.6 -44.8 27.96 14 21 28 239 -089 071061040 M31M26M25 000 27 31 15 -41.3 -44.6 27.98 13 20 30 241 -102 071065042 M31M27M25 000 28 31 16 -41.5 -44.8 28.00 14 21 32 243 -061 070063052 M31M27M25 000 29 31 17 -41.2 -44.5 28.03 16 23 29 240 057 071052054 M30M25M25 000 30 31 18 -41.1 -44.4 28.03 16 24 24 235 009 071040050 M30M25M24 000 31 31 19 -41.1 -44.5 28.03 17 25 18 229 006 070034048 M30M25M24 000 32 31 20 -41.3 -44.6 28.07 18 27 14 225 -028 070036049 M31M25M24 000 33 31 21 -41.4 -44.7 28.10 18 28 11 222 -062 070033054 M32M26M24 000 34 31 22 -41.6 -45.0 28.12 18 28 7 218 -065 070031056 M33M26M24 000 35 31 23 -41.7 -45.1 28.15 18 28 4 215 -072 070031047 M33M27M24 000 36 01 00 -41.9 -45.3 28.18 17 27 2 213 -094 069034039 M34M29M25 000 37 01 01 -41.9 -45.2 28.20 15 25 0 211 -062 070038038 M34M30M26 000 38 01 02 -41.7 -45.0 28.24 13 23 6 217 -013 070042038 M34M31M28 000 39 01 03 -41.4 -44.6 28.27 13 21 14 225 004 071046039 M34M32M29 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.