USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092800 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 28 00 -25.7 -28.8 28.70 11 11 30 241 -015 072057049 M23M21M19 000 01 28 01 -28.7 -31.5 28.72 11 14 44 255 060 077050046 M22M20M19 000 02 28 02 -28.7 -31.9 28.74 11 15 55 266 074 075048042 M21M20M19 000 03 28 03 -29.1 -32.4 28.72 12 17 56 267 094 073046044 M21M20M19 000 04 28 04 -29.3 -33.0 28.73 12 18 63 274 092 071046044 M21M19M18 000 05 28 05 -29.2 -33.4 28.76 12 19 65 276 107 067047043 M20M18M18 000 06 28 06 -29.0 -33.6 28.76 13 19 63 274 106 065050040 M19M18M18 000 07 28 07 -28.4 -33.1 28.76 12 18 63 274 122 064052038 M19M18M17 000 08 28 08 -28.1 -32.7 28.78 11 15 66 277 054 065048039 M18M17M16 000 09 28 09 -27.0 -32.1 28.76 9 12 82 293 -016 062045041 M17M16M16 000 10 28 10 -26.0 -31.7 28.77 8 11 101 312 -064 059042042 M17M16M16 000 11 28 11 -25.3 -31.5 28.74 9 12 113 324 -002 056039043 M16M16M16 000 12 28 12 -26.2 -31.9 28.73 10 15 123 334 004 059035039 M15M15M15 000 13 28 13 -26.5 -31.8 28.74 11 17 126 337 008 061036037 M15M14M14 000 14 28 14 -25.3 -30.3 28.70 11 17 131 342 050 063042033 M15M14M14 000 15 28 15 -23.9 -28.8 28.70 11 18 137 348 045 064034035 M15M14M14 000 16 28 16 -23.6 -28.4 28.70 10 17 148 359 037 064033034 M15M14M14 000 17 28 17 -24.0 -28.9 28.70 10 15 158 9 017 064034042 M15M14M13 000 18 28 18 -24.7 -29.3 28.70 10 14 165 16 002 065035078 M15M14M13 000 19 28 19 -24.6 -29.3 28.68 9 13 170 20 -022 065063082 M15M13M13 000 20 28 20 -24.2 -29.2 28.69 8 12 173 24 -013 063076079 M15M13M13 000 21 28 21 -23.5 -28.9 28.70 8 11 165 16 009 062078076 M15M13M13 000 22 28 22 -22.5 -28.2 28.69 7 9 156 7 013 060075071 M15M13M13 000 23 28 23 -21.4 -27.3 28.67 5 7 145 356 011 059074069 M14M13M13 000 24 29 00 -20.4 -25.4 28.69 5 6 116 327 008 065073062 M14M13M13 000 25 29 01 -19.6 -23.7 28.70 4 5 100 311 -004 070071057 M14M13M13 000 26 29 02 -18.7 -22.5 28.69 2 3 116 327 002 072065055 M13M12M12 000 27 29 03 -18.6 -22.2 28.70 3 5 172 23 005 073061052 M14M13M13 000 28 29 04 -20.3 -23.6 28.72 5 6 180 31 021 075055047 M15M13M12 000 29 29 05 -21.7 -24.9 28.71 5 6 150 1 -020 075052042 M14M12M12 000 30 29 06 -21.6 -25.0 28.71 5 7 136 347 -013 074046043 M14M11M11 000 31 29 07 -22.5 -25.7 28.70 7 9 121 332 -004 075044049 M13M12M11 000 32 29 08 -23.2 -26.4 28.71 8 10 102 313 005 075038057 M14M11M11 000 33 29 09 -23.9 -28.1 28.72 9 13 84 295 013 068046048 M14M11M10 000 34 29 10 -23.5 -27.7 28.71 11 17 67 278 037 068040044 M13M11M10 000 35 29 11 -22.5 -25.9 28.71 13 21 71 282 058 074037042 M12M10M10 000 36 29 12 -22.7 -25.6 28.71 15 23 66 277 097 077035034 M14M11M10 000 37 29 13 -23.8 -26.7 28.73 15 27 56 267 123 077039043 M14M10M09 000 38 29 14 -25.0 -28.0 28.75 18 30 59 270 094 076038032 M15M10M09 000 39 29 15 -25.2 -28.6 28.76 21 33 63 274 036 074034027 M14M10M10 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.