USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025093000 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 30 00 -12.8 -18.6 28.76 24 26 78 289 -028 067045042 M14M12M11 000 01 30 01 -15.3 -18.6 28.75 20 32 84 295 -089 076050043 M12M12M11 000 02 30 02 -15.9 -18.7 28.74 20 32 86 297 -066 079049038 M12M12M11 000 03 30 03 -16.1 -18.7 28.73 22 35 81 292 -022 080046033 M12M12M12 000 04 30 04 -16.6 -19.3 28.72 21 34 75 286 -030 080043028 M12M11M11 000 05 30 05 -17.1 -20.0 28.71 20 32 75 286 -010 078040026 M12M11M10 000 06 30 06 -17.5 -20.5 28.71 19 31 74 285 -027 077036028 M11M10M09 000 07 30 07 -17.7 -20.8 28.71 18 28 72 283 -023 077034031 M10M09M09 000 08 30 08 -18.0 -21.1 28.70 18 27 71 282 006 077033032 M10M09M09 000 09 30 09 -18.2 -21.4 28.69 17 26 72 283 -017 075030031 M09M08M08 000 10 30 10 -18.3 -21.8 28.67 17 27 74 285 014 074029032 M08M08M08 000 11 30 11 -18.1 -21.9 28.67 17 27 73 284 025 072029032 M08M08M08 000 12 30 12 -17.6 -21.7 28.67 17 26 71 282 008 070027031 M08M07M08 000 13 30 13 -17.3 -21.6 28.66 17 25 71 282 026 070026031 M08M07M07 000 14 30 14 -17.8 -21.8 28.66 16 25 71 282 049 071027031 M08M07M08 000 15 30 15 -17.4 -21.4 28.66 16 24 69 280 080 071027032 M08M07M07 000 16 30 16 -16.9 -21.0 28.66 15 23 68 279 090 071029039 M07M07M07 000 17 30 17 -16.7 -20.7 28.66 16 26 69 280 076 071029039 M07M06M07 000 18 30 18 -16.7 -20.5 28.67 17 25 70 281 041 072030038 M07M07M07 000 19 30 19 -16.3 -20.1 28.66 16 24 69 280 030 072033044 M07M07M08 000 20 30 20 -16.6 -20.2 28.66 16 24 71 282 054 073032046 M08M07M08 000 21 30 21 -16.7 -20.5 28.65 16 25 69 280 032 073031042 M08M07M07 000 22 30 22 -17.0 -20.7 28.65 17 26 68 279 040 074032039 M09M07M07 000 23 30 23 -17.1 -20.7 28.65 16 25 69 280 057 073040046 M09M07M07 000 24 01 00 -17.1 -20.7 28.64 16 25 70 281 063 074043054 M11M07M06 000 25 01 01 -17.2 -20.6 28.63 17 27 74 285 -010 075044055 M11M08M07 000 26 01 02 -17.5 -20.8 28.62 18 28 78 289 025 075035047 M12M08M08 000 27 01 03 -17.9 -21.1 28.61 17 27 82 293 033 076035042 M12M09M08 000 28 01 04 -18.1 -21.5 28.61 18 28 83 294 069 075035041 M12M10M08 000 29 01 05 -18.6 -21.8 28.61 17 27 81 292 069 077035041 M13M10M09 000 30 01 06 -19.2 -22.2 28.61 16 27 78 289 044 077034040 M13M09M09 000 31 01 07 -19.5 -22.4 28.61 17 27 74 285 055 077034039 M13M10M09 000 32 01 08 -19.7 -22.6 28.61 16 26 68 279 036 077035039 M12M10M09 000 33 01 09 -19.9 -22.9 28.60 15 24 66 277 028 077035039 M12M10M09 000 34 01 10 -20.4 -23.4 28.60 14 21 70 281 -022 077036041 M12M10M09 000 35 01 11 -20.9 -23.8 28.60 13 20 63 274 -100 078039042 M13M11M10 000 36 01 12 -21.2 -24.1 28.61 12 19 57 268 -093 078041043 M13M11M11 000 37 01 13 -21.4 -24.2 28.62 11 17 55 266 -106 078042044 M13M11M11 000 38 01 14 -21.6 -24.5 28.63 10 13 50 261 -070 077043045 M13M12M11 000 39 01 15 -21.7 -24.5 28.64 10 12 41 252 013 078045045 M13M12M12 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.