USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092712 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 27 12 -26.9 -32.3 28.56 6 7 27 238 -009 062046040 M24M21M19 000 01 27 13 -30.5 -34.7 28.59 8 10 41 252 -020 067043039 M21M19M19 000 02 27 14 -30.5 -34.0 28.59 10 14 32 243 -020 072046041 M22M20M18 000 03 27 15 -30.9 -33.6 28.57 12 16 30 241 004 077044043 M21M19M18 000 04 27 16 -30.8 -33.4 28.63 13 18 26 237 017 078043044 M22M19M18 000 05 27 17 -30.7 -33.4 28.65 13 18 28 239 017 077043046 M22M19M18 000 06 27 18 -30.3 -33.0 28.63 13 19 28 239 054 078045046 M21M19M18 000 07 27 19 -29.8 -32.5 28.67 13 19 30 241 066 077049048 M22M19M18 000 08 27 20 -29.3 -32.1 28.66 12 19 32 243 083 077050050 M21M19M18 000 09 27 21 -29.0 -31.7 28.69 12 19 33 244 102 077052051 M22M19M18 000 10 27 22 -28.9 -31.6 28.71 12 18 33 244 094 078055051 M22M20M18 000 11 27 23 -28.8 -31.5 28.73 11 16 36 247 087 078057050 M22M19M18 000 12 28 00 -28.8 -31.5 28.74 10 14 40 251 077 078058050 M21M19M19 000 13 28 01 -28.7 -31.4 28.75 10 12 52 263 051 077056048 M20M19M19 000 14 28 02 -28.4 -31.3 28.74 10 12 60 271 023 076053047 M20M19M19 000 15 28 03 -28.2 -31.8 28.77 11 15 65 276 010 071052043 M20M19M18 000 16 28 04 -28.2 -32.0 28.78 10 14 68 279 002 070050042 M19M18M17 000 17 28 05 -28.0 -32.1 28.78 11 15 71 282 027 068049042 M18M17M17 000 18 28 06 -27.8 -31.9 28.77 12 16 71 282 019 068047043 M17M17M17 000 19 28 07 -27.4 -31.3 28.77 12 16 70 281 027 070043044 M17M16M16 000 20 28 08 -26.8 -30.7 28.77 11 16 70 281 016 069042043 M16M16M16 000 21 28 09 -26.1 -30.5 28.78 11 15 74 285 012 067041042 M16M16M16 000 22 28 10 -25.4 -30.3 28.77 10 13 82 293 -005 064040041 M16M15M16 000 23 28 11 -24.6 -30.0 28.75 8 12 95 306 -011 061041039 M15M15M15 000 24 28 12 -24.8 -29.8 28.74 9 14 111 322 -018 063045037 M15M15M15 000 25 28 13 -25.2 -29.8 28.74 11 16 122 333 025 065042036 M15M14M14 000 26 28 14 -25.2 -29.5 28.73 10 16 130 341 045 067040035 M14M14M14 000 27 28 15 -24.8 -29.1 28.72 11 17 142 353 044 068035033 M14M13M13 000 28 28 16 -24.3 -28.6 28.71 11 18 149 360 047 067032029 M15M13M13 000 29 28 17 -23.6 -28.1 28.71 11 18 152 3 030 067033018 M15M13M13 000 30 28 18 -23.9 -28.5 28.69 10 16 157 8 039 066032046 M14M13M13 000 31 28 19 -23.7 -28.4 28.68 9 14 164 15 020 065043061 M14M13M13 000 32 28 20 -23.9 -28.5 28.67 9 14 166 17 013 065051067 M15M13M12 000 33 28 21 -23.4 -28.1 28.66 9 13 163 14 -010 066056068 M14M13M12 000 34 28 22 -23.0 -27.5 28.67 8 11 159 10 -016 066057070 M14M13M12 000 35 28 23 -22.5 -26.9 28.65 7 10 152 3 -003 067056068 M15M14M13 000 36 29 00 -21.6 -26.1 28.66 6 9 130 341 -011 068055067 M15M13M12 000 37 29 01 -20.4 -25.1 28.66 5 6 106 317 -005 066054061 M14M12M12 000 38 29 02 -19.8 -24.8 28.66 4 5 83 294 -005 065055057 M14M13M12 000 39 29 03 -19.4 -24.6 28.65 2 2 53 264 -011 063053056 M14M13M12 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.