USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025080100 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 01 00 -35.2 -38.9 28.21 10 10 360 211 -012 068074074 M32M29M27 000 01 01 01 -38.0 -41.3 28.24 12 18 12 223 007 071070074 M31M28M26 005 02 01 02 -39.4 -42.4 28.27 14 20 11 222 023 073070080 M32M28M26 005 03 01 03 -40.4 -43.2 28.30 15 22 12 223 -032 075070083 M33M28M27 005 04 01 04 -40.7 -43.3 28.35 14 20 14 225 -011 077062083 M32M28M27 000 05 01 05 -40.5 -42.8 28.37 13 19 14 225 009 078052083 M31M28M28 000 06 01 06 -40.9 -43.1 28.41 12 17 25 236 003 079047075 M31M29M30 000 07 01 07 -40.4 -42.6 28.42 10 14 27 238 035 080050059 M31M30M31 000 08 01 08 -39.6 -42.1 28.45 8 9 33 244 044 077052053 M30M31M31 000 09 01 09 -38.8 -41.5 28.49 8 9 36 247 058 076055050 M31M31M30 000 10 01 10 -38.3 -41.3 28.50 8 9 49 260 007 074047044 M31M30M28 000 11 01 11 -38.3 -41.5 28.49 10 11 66 277 -028 072037046 M29M27M25 000 12 01 12 -38.0 -41.3 28.49 12 16 68 278 -024 071035046 M27M25M24 000 13 01 13 -37.4 -41.0 28.49 14 20 65 276 -025 069035044 M25M24M23 000 14 01 14 -37.0 -40.8 28.48 15 22 66 277 -067 068034044 M25M23M22 000 15 01 15 -36.2 -40.4 28.48 16 24 69 280 -043 065035040 M24M22M22 000 16 01 16 -35.3 -40.0 28.47 17 26 68 279 027 062033025 M23M22M21 000 17 01 17 -34.4 -39.7 28.46 18 28 66 277 037 059021018 M22M21M20 000 18 01 18 -33.0 -38.8 28.45 18 28 66 277 065 056017020 M21M19M19 000 19 01 19 -31.6 -38.2 28.44 18 29 63 274 078 052019043 M20M19M18 000 20 01 20 -31.4 -38.2 28.43 18 30 61 272 -028 051029055 M19M18M18 000 21 01 21 -29.7 -35.6 28.42 19 30 54 265 -068 056043067 M19M19M19 000 22 01 22 -29.4 -33.1 28.41 17 27 54 265 044 070080064 M19M19M19 000 23 01 23 -28.9 -30.9 28.39 17 27 49 260 038 083089063 M19M19M19 000 24 02 00 -28.5 -29.9 28.39 15 26 42 253 -014 088090075 M19M19M19 000 25 02 01 -28.2 -29.6 28.37 14 23 51 262 006 088085081 M18M19M19 000 26 02 02 -27.0 -29.2 28.34 13 21 58 268 023 081074079 M18M19M19 000 27 02 03 -26.5 -29.4 28.34 13 21 58 269 033 077060085 M18M18M19 000 28 02 04 -25.5 -28.3 28.33 12 19 57 268 021 077056074 M17M18M19 001 29 02 05 -23.2 -26.5 28.30 10 15 26 237 005 074058066 M17M18M19 004 30 02 06 -24.0 -26.1 28.28 12 17 59 270 089 083061076 M18M18M19 009 31 02 07 -23.7 -25.9 28.27 9 11 65 276 079 082063083 M17M18M19 008 32 02 08 -23.6 -26.1 28.24 10 13 91 302 -034 080059077 M17M17M18 006 33 02 09 -23.6 -26.5 28.23 10 14 72 283 -008 077057079 M16M18M19 000 34 02 10 -23.9 -26.1 28.23 9 14 58 269 041 082069082 M16M18M19 000 35 02 11 -25.7 -27.0 28.23 11 17 50 261 -002 089081069 M17M19M20 000 36 02 12 -26.3 -27.0 28.23 11 18 49 260 -049 095082064 M18M19M19 000 37 02 13 -26.3 -26.8 28.23 11 17 49 260 -034 096076054 M18M18M18 000 38 02 14 -25.8 -26.3 28.23 13 20 43 254 -037 096060073 M17M17M18 000 39 02 15 -25.2 -25.8 28.23 12 18 49 260 -015 095089067 M17M17M18 002 * 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.