USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092812 AMPS thwaites 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 28 12 -20.0 -30.0 28.71 11 12 148 359 002 053039036 M17M16M14 000 01 28 13 -27.1 -32.3 28.70 11 15 142 353 029 061033031 M16M14M13 000 02 28 14 -26.6 -32.0 28.69 11 16 145 356 068 060028028 M15M13M13 000 03 28 15 -26.5 -31.9 28.69 11 16 151 2 033 061028036 M15M13M13 000 04 28 16 -26.8 -31.8 28.69 10 15 149 360 030 063036045 M16M13M13 000 05 28 17 -26.4 -31.6 28.69 9 14 149 0 -001 062044052 M16M13M13 000 06 28 18 -24.7 -30.8 28.68 7 11 149 0 -042 057052061 M15M13M13 000 07 28 19 -21.9 -29.2 28.69 5 8 139 350 -010 052061074 M14M14M14 000 08 28 20 -19.6 -27.4 28.68 4 6 152 3 005 050064082 M14M14M14 000 09 28 21 -19.0 -26.6 28.70 4 5 113 324 -016 051065086 M14M14M14 000 10 28 22 -18.7 -25.6 28.70 4 4 98 309 -011 055066082 M15M15M14 000 11 28 23 -19.4 -25.4 28.71 3 3 32 243 007 059066082 M16M14M13 000 12 29 00 -20.9 -25.8 28.71 4 4 22 233 -024 064075075 M16M13M13 000 13 29 01 -20.5 -25.4 28.71 3 4 12 223 -011 065083065 M15M13M13 000 14 29 02 -20.2 -24.8 28.72 2 3 351 202 003 067082061 M14M13M13 000 15 29 03 -19.9 -24.2 28.73 1 2 259 110 -009 069079053 M14M13M12 000 16 29 04 -20.2 -23.7 28.73 3 3 157 8 -002 074079048 M14M13M13 000 17 29 05 -20.9 -23.2 28.74 5 7 117 328 021 082080042 M15M14M13 000 18 29 06 -21.2 -22.7 28.74 6 7 104 315 -010 088071044 M14M12M12 000 19 29 07 -21.6 -22.6 28.73 6 8 103 314 000 092068049 M13M13M12 000 20 29 08 -22.8 -23.5 28.74 9 12 106 317 -000 094057050 M14M12M12 000 21 29 09 -23.3 -24.2 28.74 9 13 95 306 -009 092043057 M13M11M10 000 22 29 10 -23.3 -26.0 28.74 10 15 80 291 020 079050057 M12M10M10 000 23 29 11 -21.6 -25.0 28.74 13 19 66 277 047 074049047 M11M09M09 000 24 29 12 -21.0 -24.2 28.74 13 18 74 285 044 076043042 M10M09M09 000 25 29 13 -21.9 -24.8 28.74 16 25 76 287 027 078040045 M11M09M09 000 26 29 14 -22.4 -25.6 28.75 17 26 69 280 045 076039048 M12M09M09 000 27 29 15 -22.7 -26.0 28.76 18 30 65 276 036 075031034 M12M08M08 000 28 29 16 -21.7 -25.3 28.76 20 31 65 275 070 073036029 M11M08M08 000 29 29 17 -22.9 -26.4 28.77 20 31 63 274 064 074033024 M13M08M08 000 30 29 18 -23.5 -26.9 28.78 21 33 65 276 080 074033023 M13M09M09 000 31 29 19 -23.6 -27.1 28.80 21 32 62 273 043 073041028 M15M10M10 000 32 29 20 -23.3 -27.1 28.81 18 29 63 274 007 071046035 M14M10M10 000 33 29 21 -22.8 -26.5 28.82 18 27 71 282 -012 072045020 M12M11M11 000 34 29 22 -22.7 -26.6 28.82 18 27 76 287 -088 071029018 M12M11M11 000 35 29 23 -22.1 -26.4 28.82 19 29 78 289 -083 069019028 M10M10M11 000 36 30 00 -21.7 -25.8 28.82 19 29 74 285 016 069025033 M11M10M10 000 37 30 01 -21.4 -25.4 28.82 20 31 74 285 -009 070025035 M11M09M10 000 38 30 02 -21.4 -25.1 28.81 20 32 73 284 -010 072025038 M12M09M10 000 39 30 03 -21.3 -24.7 28.81 20 33 75 286 010 074028031 M13M10M09 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 3h) 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.