USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092300 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 23 00 -25.8 -32.1 28.52 9 9 101 312 -008 059043045 M24M21M20 000 01 23 01 -29.5 -34.0 28.49 10 12 97 308 022 065038043 M21M19M20 000 02 23 02 -28.7 -33.6 28.47 9 11 88 299 003 063038045 M20M19M20 000 03 23 03 -28.5 -33.3 28.45 9 12 91 302 -031 064040045 M20M20M20 000 04 23 04 -28.9 -33.2 28.44 9 12 88 299 -025 067040042 M20M19M20 000 05 23 05 -29.0 -33.2 28.44 9 12 81 292 -034 068040041 M20M19M20 000 06 23 06 -28.5 -32.8 28.43 8 10 74 285 -025 067040038 M19M19M20 000 07 23 07 -27.7 -32.3 28.40 7 8 64 275 -027 065040038 M19M19M20 000 08 23 08 -26.2 -31.4 28.40 6 7 57 268 -018 062041036 M19M20M20 000 09 23 09 -25.2 -30.9 28.38 4 5 59 270 006 059042031 M20M20M20 000 10 23 10 -24.8 -30.8 28.38 4 5 59 270 009 058040029 M20M19M19 000 11 23 11 -25.2 -31.0 28.37 5 6 51 262 -012 058038029 M19M19M19 000 12 23 12 -25.4 -31.1 28.37 6 7 43 254 -013 059037029 M19M19M19 000 13 23 13 -25.5 -31.2 28.38 6 7 33 244 -005 059037028 M19M19M20 000 14 23 14 -26.1 -31.5 28.38 7 8 26 237 -010 060036027 M19M19M19 000 15 23 15 -26.2 -31.5 28.38 7 8 24 235 -016 061035028 M19M19M19 000 16 23 16 -25.5 -31.2 28.40 6 7 21 232 -012 059034029 M19M19M19 000 17 23 17 -24.7 -31.0 28.41 6 7 24 235 -006 056033030 M19M19M19 000 18 23 18 -24.4 -31.0 28.42 6 7 31 242 003 054032030 M18M19M19 000 19 23 19 -24.6 -31.2 28.43 7 8 34 245 -006 054030029 M18M18M18 000 20 23 20 -25.2 -31.3 28.44 8 9 35 246 -009 057028029 M18M18M18 000 21 23 21 -25.0 -31.1 28.45 8 10 35 246 -015 057026031 M17M17M17 000 22 23 22 -24.7 -30.8 28.46 8 10 37 248 -020 057025036 M17M17M17 000 23 23 23 -24.6 -30.6 28.48 8 10 44 255 -020 057025040 M16M16M17 000 24 24 00 -24.1 -30.3 28.49 8 10 48 259 -023 057026044 M16M16M17 000 25 24 01 -23.2 -29.9 28.51 8 10 48 259 -023 054027054 M15M16M16 000 26 24 02 -22.7 -29.5 28.52 8 10 51 262 -018 054033064 M15M15M16 000 27 24 03 -22.0 -28.6 28.55 8 9 54 265 -011 055041065 M15M15M16 000 28 24 04 -22.1 -28.4 28.56 8 9 61 272 -009 057046066 M14M15M16 000 29 24 05 -22.1 -28.3 28.57 8 9 66 277 -007 058047066 M14M15M15 000 30 24 06 -22.2 -28.2 28.59 8 10 73 284 -004 058047065 M14M15M15 000 31 24 07 -22.2 -28.2 28.61 8 11 79 290 -006 058046063 M14M14M15 000 32 24 08 -21.3 -27.9 28.62 8 10 81 292 -009 055046061 M14M14M15 000 33 24 09 -21.5 -27.9 28.63 8 11 86 297 -003 056044058 M13M14M15 000 34 24 10 -21.5 -27.6 28.64 9 12 91 302 -006 058041061 M13M14M14 000 35 24 11 -21.1 -27.2 28.64 9 12 97 308 -007 058041065 M13M14M14 000 36 24 12 -20.9 -26.9 28.65 9 13 102 313 -005 059042073 M13M13M14 000 37 24 13 -20.4 -26.5 28.66 9 13 106 317 -008 058043070 M13M13M14 000 38 24 14 -19.8 -26.3 28.67 8 12 112 323 -002 056042068 M12M13M14 000 39 24 15 -19.5 -26.2 28.68 7 11 118 329 003 055039063 M12M13M14 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.