USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092800 AMPS 24km 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 28 00 -25.6 -30.6 28.76 8 8 39 250 -002 073054042 M23M21M19 000 03 28 03 -30.1 -33.2 28.79 8 13 67 278 004 074052046 M23M21M20 000 06 28 06 -30.3 -34.5 28.82 9 14 76 287 -002 067048046 M20M19M19 000 09 28 09 -27.9 -32.7 28.81 7 8 102 313 -029 064045042 M18M17M17 000 12 28 12 -26.7 -32.1 28.78 8 10 140 351 -003 061037040 M17M15M15 000 15 28 15 -24.4 -29.1 28.75 9 11 154 5 015 065036034 M15M14M14 000 18 28 18 -24.6 -29.2 28.75 9 10 185 36 -011 066042061 M16M14M14 000 21 28 21 -23.5 -28.6 28.75 5 7 178 29 -003 063065075 M16M15M14 000 24 29 00 -21.3 -26.4 28.74 2 4 95 306 -002 064067064 M17M14M13 000 27 29 03 -20.2 -24.1 28.75 1 2 201 52 007 071063053 M17M14M13 000 30 29 06 -22.5 -26.1 28.77 3 4 140 351 005 073052044 M17M14M12 000 33 29 09 -24.5 -28.2 28.77 6 7 102 313 007 071046048 M16M13M12 000 36 29 12 -24.4 -27.1 28.77 8 13 70 281 -004 078044039 M17M14M12 000 39 29 15 -25.9 -29.1 28.82 13 26 63 274 007 075040030 M17M13M11 000 42 29 18 -25.0 -28.5 28.85 16 28 74 285 005 072039024 M16M12M11 000 45 29 21 -23.9 -27.5 28.86 16 27 84 295 -015 072034026 M14M12M12 000 48 30 00 -23.4 -27.3 28.83 15 26 87 298 -008 070030026 M13M11M11 000 51 30 03 -22.6 -25.9 28.80 16 29 82 293 005 075036045 M15M12M11 000 54 30 06 -23.5 -26.2 28.77 14 27 77 288 022 079034039 M15M12M12 000 57 30 09 -24.8 -27.4 28.74 13 25 73 284 021 079032034 M14M12M11 000 60 30 12 -25.3 -28.1 28.71 12 23 73 284 037 077033034 M13M12M11 000 63 30 15 -25.3 -28.4 28.70 11 21 71 282 037 075032036 M13M11M11 000 66 30 18 -23.9 -27.5 28.70 9 15 62 273 016 073034036 M13M11M11 000 69 30 21 -23.3 -27.0 28.70 6 9 46 257 007 072041033 M15M12M12 000 72 01 00 -22.9 -26.1 28.72 6 8 46 257 -004 075053038 M15M14M13 000 75 01 03 -23.5 -25.9 28.75 6 8 37 248 -001 081058040 M16M14M13 000 78 01 06 -23.8 -25.4 28.77 4 6 42 253 -005 086060042 M16M14M13 000 81 01 09 -23.5 -25.1 28.79 4 5 61 272 -004 087065046 M17M15M14 000 84 01 12 -21.7 -23.7 28.79 3 3 100 311 -002 083066048 M17M15M14 000 87 01 15 -22.0 -24.7 28.81 3 5 71 282 003 079065048 M17M15M14 000 90 01 18 -21.4 -24.2 28.82 2 3 10 221 -002 078066049 M17M15M14 000 93 01 21 -20.8 -23.1 28.82 2 2 356 207 005 082069050 M18M16M14 000 96 02 00 -22.4 -24.4 28.83 3 5 347 198 -003 084068050 M19M16M15 000 99 02 03 -22.9 -25.2 28.85 5 7 343 194 000 082069047 M19M17M16 000 102 02 06 -22.9 -25.2 28.88 5 8 354 204 -000 081064044 M19M17M16 000 105 02 09 -24.5 -26.5 28.90 7 12 9 220 008 083069040 M19M17M17 000 108 02 12 -26.7 -28.3 28.93 8 14 16 227 002 086068072 M19M18M17 000 111 02 15 -27.3 -28.8 28.96 8 16 26 237 002 088080077 M19M18M18 000 114 02 18 -26.0 -27.6 28.99 9 16 31 242 001 087082069 M18M18M18 000 117 02 21 -24.7 -26.5 29.00 8 15 40 251 005 085070060 M18M17M18 000 120 03 00 -23.7 -25.5 29.01 7 12 46 257 -012 085061054 M17M17M18 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.