USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025091912 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 19 12 -13.3 -17.0 28.07 4 7 331 182 -002 081055067 M12M10M11 000 01 19 13 -16.6 -19.4 28.07 6 7 346 197 -001 080056067 M11M10M11 001 02 19 14 -17.5 -20.3 28.10 8 10 346 197 013 079058072 M10M10M11 001 03 19 15 -18.1 -20.5 28.07 9 13 324 175 -016 081064075 M11M11M11 001 04 19 16 -18.5 -19.2 28.09 9 13 319 170 -021 094069076 M12M11M11 000 05 19 17 -17.6 -18.2 28.11 9 13 316 167 -011 095070074 M12M11M11 000 06 19 18 -16.8 -17.3 28.12 9 13 324 175 -004 096072074 M12M11M11 000 07 19 19 -16.5 -16.9 28.13 9 14 328 179 -000 097078077 M12M11M12 000 08 19 20 -16.2 -16.6 28.14 9 13 326 177 016 097081076 M12M11M12 000 09 19 21 -16.0 -16.4 28.16 9 14 323 174 005 097087079 M13M11M12 001 10 19 22 -16.0 -16.5 28.19 8 13 313 164 011 096098082 M14M13M13 004 11 19 23 -15.9 -17.0 28.20 8 12 306 157 015 092098087 M14M13M13 016 12 20 00 -15.8 -17.3 28.23 6 10 308 159 016 089096092 M14M14M13 038 13 20 01 -15.9 -17.6 28.26 7 10 320 171 023 087093094 M14M14M14 065 14 20 02 -16.5 -18.3 28.29 8 12 337 188 014 086090093 M14M14M14 090 15 20 03 -17.6 -19.5 28.32 10 14 342 193 008 085089091 M14M14M14 094 16 20 04 -18.8 -20.7 28.36 12 17 347 198 -001 085088087 M15M14M15 080 17 20 05 -20.2 -22.1 28.40 13 20 352 203 009 085086085 M16M14M14 054 18 20 06 -21.2 -23.1 28.44 15 22 357 208 039 085084082 M16M15M14 034 19 20 07 -22.3 -24.2 28.48 16 25 2 213 079 085082078 M17M15M14 020 20 20 08 -23.5 -25.0 28.53 16 25 7 218 085 087084076 M18M15M14 010 21 20 09 -24.0 -25.0 28.58 16 24 12 223 053 092084073 M19M15M14 004 22 20 10 -23.4 -23.9 28.61 17 25 21 232 005 095083070 M20M16M15 001 23 20 11 -22.4 -22.9 28.64 16 25 14 225 001 095085070 M20M16M15 000 24 20 12 -21.2 -21.7 28.67 15 23 14 225 021 096091067 M20M18M14 000 25 20 13 -20.9 -21.3 28.70 15 23 12 223 035 096092067 M20M18M15 000 26 20 14 -21.0 -21.9 28.73 14 21 10 221 075 092093070 M20M18M16 000 27 20 15 -21.3 -22.3 28.77 10 13 34 245 070 092100072 M21M20M17 000 28 20 16 -21.1 -21.9 28.79 10 14 20 231 099 093097075 M21M19M16 000 29 20 17 -20.9 -21.7 28.81 9 13 21 232 126 093099078 M21M19M17 000 30 20 18 -20.8 -21.8 28.83 8 12 5 216 084 092099086 M20M18M17 000 31 20 19 -20.6 -21.7 28.85 7 10 13 224 -061 091098091 M19M19M19 001 32 20 20 -20.6 -21.8 28.86 6 9 8 219 -027 090095090 M19M19M20 004 33 20 21 -20.6 -22.0 28.87 6 9 3 214 035 089093087 M19M19M19 007 34 20 22 -20.5 -22.3 28.88 6 8 357 207 -012 086091083 M19M19M20 010 35 20 23 -20.6 -22.7 28.89 6 8 346 197 -027 083088081 M19M20M20 014 36 21 00 -21.2 -23.4 28.90 6 8 334 185 011 083086080 M20M20M21 016 37 21 01 -21.6 -23.8 28.91 5 8 338 189 049 082084082 M20M20M20 015 38 21 02 -21.9 -24.2 28.92 5 7 326 177 052 082084080 M21M20M20 014 39 21 03 -22.5 -24.9 28.93 5 7 328 179 000 081083081 M21M20M20 015 * 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.