USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072912 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 29 12 -29.3 -31.6 28.64 4 4 118 329 -001 071067075 M26M23M23 000 01 29 13 -31.1 -33.1 28.66 4 4 119 330 -012 083067074 M24M23M23 000 02 29 14 -30.7 -32.5 28.63 5 8 150 1 -018 085067064 M25M23M23 000 03 29 15 -31.9 -33.3 28.63 6 8 137 348 003 087068054 M24M23M23 000 04 29 16 -31.8 -33.2 28.60 6 8 130 341 -010 087069050 M24M23M23 000 05 29 17 -31.7 -33.3 28.62 6 8 127 338 005 086070048 M24M23M23 000 06 29 18 -31.1 -32.7 28.62 5 8 126 337 -026 086070042 M24M23M23 000 07 29 19 -30.5 -32.2 28.60 5 8 141 352 -006 085070037 M23M22M22 000 08 29 20 -30.9 -32.9 28.59 6 8 160 11 -002 083069037 M23M22M22 000 09 29 21 -31.9 -34.4 28.60 7 10 164 15 005 079068040 M24M22M21 000 10 29 22 -32.5 -35.4 28.57 7 10 172 23 -017 075063044 M24M22M21 000 11 29 23 -33.3 -36.6 28.55 8 11 173 24 -022 072053051 M24M22M21 000 12 30 00 -34.2 -37.7 28.53 8 11 164 15 -018 070048054 M24M22M21 000 13 30 01 -34.1 -38.0 28.54 8 11 163 14 -005 068045047 M24M22M21 000 14 30 02 -33.7 -37.7 28.50 7 10 158 9 -022 067039044 M24M21M20 000 15 30 03 -33.1 -37.5 28.47 6 9 147 358 -020 065039044 M23M21M21 000 16 30 04 -33.2 -37.6 28.45 7 9 144 355 -009 064042049 M24M22M21 000 17 30 05 -33.4 -37.6 28.44 6 8 143 354 -017 066042057 M23M22M21 000 18 30 06 -33.6 -37.6 28.42 7 9 133 344 -026 067048050 M23M22M21 000 19 30 07 -33.7 -37.4 28.38 7 10 131 342 -027 069054048 M23M22M21 000 20 30 08 -33.9 -37.3 28.35 8 10 127 338 -012 071048050 M23M21M20 000 21 30 09 -34.3 -37.4 28.33 8 11 115 326 006 073046045 M23M21M20 000 22 30 10 -34.6 -37.5 28.31 9 13 99 310 017 075048044 M23M21M20 000 23 30 11 -34.3 -37.0 28.28 11 15 85 296 -024 076052043 M23M21M20 000 24 30 12 -33.6 -36.5 28.25 11 15 81 292 020 076055043 M23M22M21 000 25 30 13 -32.6 -35.7 28.24 12 16 74 285 054 074056044 M22M21M20 000 26 30 14 -32.6 -35.7 28.22 12 17 65 276 031 074055045 M22M21M20 000 27 30 15 -32.7 -36.1 28.20 12 16 62 273 031 072053045 M22M21M20 000 28 30 16 -32.8 -35.9 28.18 11 16 64 275 009 074050047 M22M21M20 000 29 30 17 -32.5 -35.1 28.17 11 15 66 277 -007 077051049 M22M21M21 000 30 30 18 -32.5 -34.8 28.15 10 14 66 277 -022 080054049 M23M21M21 000 31 30 19 -32.5 -34.6 28.12 10 13 71 282 -028 082055047 M22M21M21 000 32 30 20 -32.4 -34.4 28.10 10 13 73 284 -007 083058046 M22M22M21 000 33 30 21 -32.4 -34.3 28.10 9 13 73 284 017 084060047 M22M22M22 000 34 30 22 -31.8 -33.5 28.09 8 11 72 283 033 085059051 M22M22M22 000 35 30 23 -30.6 -32.4 28.06 8 10 77 288 025 084057051 M22M22M22 000 36 31 00 -32.8 -34.6 28.05 10 13 81 292 007 084059048 M23M22M22 000 37 31 01 -32.5 -34.5 28.04 9 13 80 291 -002 082050046 M22M22M22 000 38 31 02 -33.5 -37.8 28.02 11 15 76 287 010 065047043 M22M21M21 000 39 31 03 -34.4 -38.0 28.01 12 17 71 282 -022 069046052 M22M21M21 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.