USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092912 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 -12.9 -18.5 28.73 17 18 69 280 -020 070055041 M12M11M10 000 01 29 13 -17.9 -21.2 28.79 16 25 68 279 113 076044039 M12M10M09 000 02 29 14 -19.4 -22.4 28.76 19 29 68 279 028 077040037 M13M11M10 000 03 29 15 -19.9 -22.7 28.78 20 30 64 275 046 078033033 M13M10M10 000 04 29 16 -20.4 -24.0 28.79 20 30 68 279 050 072028021 M14M11M10 000 05 29 17 -20.8 -24.9 28.79 21 32 71 282 041 069026017 M15M11M11 000 06 29 18 -21.1 -25.5 28.80 19 29 73 284 074 068023014 M14M11M11 000 07 29 19 -21.2 -25.7 28.79 19 29 73 284 035 067021016 M12M11M10 000 08 29 20 -21.2 -25.7 28.79 20 29 77 288 019 067018021 M11M10M10 000 09 29 21 -20.8 -25.5 28.79 19 29 80 291 -014 066025025 M11M10M10 000 10 29 22 -20.9 -25.3 28.81 20 31 78 289 -020 068026018 M12M10M10 000 11 29 23 -20.9 -25.0 28.78 20 32 76 287 001 070028029 M11M09M10 000 12 30 00 -20.3 -24.8 28.78 19 31 77 288 005 067030029 M11M10M10 000 13 30 01 -19.9 -24.5 28.80 19 30 77 288 -005 067032030 M11M10M10 000 14 30 02 -19.6 -23.9 28.78 18 30 74 285 -000 069034034 M11M10M10 000 15 30 03 -19.4 -23.5 28.78 17 28 74 285 -017 070036040 M11M10M10 000 16 30 04 -19.1 -23.3 28.76 16 27 77 288 -047 069034041 M11M10M10 000 17 30 05 -18.8 -23.1 28.75 17 28 78 289 018 069032039 M11M10M09 000 18 30 06 -19.0 -23.1 28.75 19 31 74 285 031 070029030 M11M09M09 000 19 30 07 -19.3 -23.2 28.74 19 30 73 284 -046 071026028 M10M08M09 000 20 30 08 -19.3 -23.5 28.73 18 30 72 283 -036 069025027 M09M08M09 000 21 30 09 -19.4 -23.6 28.74 18 31 70 280 -078 069026027 M09M08M08 000 22 30 10 -19.1 -23.5 28.72 18 29 69 280 -075 068027030 M08M08M08 000 23 30 11 -18.6 -23.3 28.69 16 26 72 283 -056 067031039 M08M08M09 000 24 30 12 -17.8 -22.7 28.69 16 25 76 287 -009 066034046 M08M08M09 000 25 30 13 -17.4 -22.0 28.71 16 24 79 290 005 067035046 M08M08M09 000 26 30 14 -17.6 -21.9 28.70 16 24 80 291 008 069035049 M08M08M09 000 27 30 15 -17.9 -22.1 28.69 16 25 79 290 022 070036046 M08M08M08 000 28 30 16 -18.1 -22.1 28.68 16 25 76 287 -038 070038045 M08M07M08 000 29 30 17 -17.7 -22.0 28.68 16 24 70 281 -009 069038040 M07M07M07 000 30 30 18 -18.3 -22.2 28.67 16 24 68 279 -012 071038048 M07M07M07 000 31 30 19 -18.2 -22.0 28.65 15 23 69 280 049 072040050 M08M07M08 000 32 30 20 -17.6 -21.6 28.65 14 22 67 278 104 071041049 M08M07M08 000 33 30 21 -16.6 -21.1 28.65 13 19 64 275 078 068041050 M07M07M08 000 34 30 22 -16.0 -20.7 28.65 12 17 58 269 057 067040051 M07M07M07 000 35 30 23 -16.9 -21.0 28.64 12 17 54 265 038 071040047 M07M07M07 000 36 01 00 -17.4 -21.3 28.64 11 16 46 257 017 072040045 M08M07M08 000 37 01 01 -17.4 -21.4 28.67 9 12 44 255 -112 071041048 M09M08M09 000 38 01 02 -16.7 -21.2 28.67 9 10 40 251 -056 069038046 M09M08M09 000 39 01 03 -16.0 -21.4 28.66 7 8 24 235 -037 063037046 M09M09M09 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.