USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025091900 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 00 -9.7 -12.9 28.21 6 7 159 10 -000 082072075 M10M09M10 000 01 19 01 -11.6 -13.8 28.20 9 11 148 359 036 084064078 M09M09M10 015 02 19 02 -12.8 -15.3 28.18 10 13 133 344 009 082063082 M09M09M10 019 03 19 03 -12.9 -15.7 28.15 11 17 133 344 011 080061079 M09M09M10 020 04 19 04 -12.6 -15.7 28.15 13 21 124 335 024 078057075 M09M09M10 006 05 19 05 -12.5 -15.1 28.13 12 20 119 330 004 081055072 M09M09M10 003 06 19 06 -12.5 -14.8 28.11 11 19 113 324 002 083073067 M09M09M09 004 07 19 07 -12.7 -15.4 28.08 10 18 105 316 014 080059074 M09M09M09 005 08 19 08 -12.7 -15.9 28.07 9 13 94 305 064 077049079 M08M08M09 004 09 19 09 -12.4 -16.0 28.06 7 11 54 265 025 075061090 M09M09M10 003 10 19 10 -12.4 -15.7 28.05 7 10 23 234 -011 077067092 M09M10M10 002 11 19 11 -12.5 -15.7 28.02 6 8 358 209 -036 077066090 M09M10M11 004 12 19 12 -13.0 -15.9 28.02 6 8 342 193 003 079066085 M10M10M11 004 13 19 13 -14.4 -16.7 28.02 7 10 349 200 -002 082066075 M11M10M11 003 14 19 14 -15.5 -17.3 28.03 9 13 353 204 002 086067075 M11M10M11 001 15 19 15 -16.1 -17.7 28.05 10 14 4 215 -001 087073078 M11M11M11 000 16 19 16 -16.6 -18.0 28.06 11 17 6 217 -004 089077080 M11M11M11 000 17 19 17 -17.2 -18.3 28.09 12 18 3 214 031 091081076 M12M11M11 000 18 19 18 -17.9 -18.6 28.10 12 18 2 213 020 094082073 M12M11M11 000 19 19 19 -17.5 -17.9 28.12 11 18 352 203 031 097077067 M12M11M11 000 20 19 20 -16.8 -17.1 28.15 11 18 345 196 039 097072071 M12M11M11 000 21 19 21 -16.4 -16.9 28.18 10 17 341 192 006 096078074 M13M12M12 002 22 19 22 -16.1 -16.7 28.20 8 14 337 188 -026 095084075 M13M12M12 007 23 19 23 -15.8 -16.6 28.24 7 11 340 191 019 094097081 M14M14M13 014 24 20 00 -16.0 -16.9 28.27 9 13 351 202 029 093097084 M14M14M14 021 25 20 01 -17.0 -18.2 28.30 11 15 351 202 -010 091093083 M15M14M14 026 26 20 02 -17.6 -18.9 28.33 11 16 348 199 -017 089090081 M15M14M14 025 27 20 03 -18.2 -19.8 28.37 11 17 351 202 -009 088089085 M16M14M14 019 28 20 04 -18.6 -20.0 28.40 13 19 354 205 -002 089086085 M16M14M14 016 29 20 05 -18.8 -20.0 28.44 14 20 356 207 017 091084081 M17M14M13 016 30 20 06 -19.3 -20.3 28.48 15 21 8 219 040 092081081 M17M14M13 017 31 20 07 -19.7 -20.8 28.52 15 22 15 226 068 090080081 M17M14M13 015 32 20 08 -20.1 -21.5 28.55 15 23 21 232 066 089080083 M17M14M14 013 33 20 09 -20.4 -22.1 28.59 15 23 20 231 061 086079083 M17M15M14 014 34 20 10 -21.2 -22.9 28.62 14 22 17 228 067 086080082 M17M15M15 011 * 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.