USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025072800 AMPS 2p67km 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 -35.3 -39.8 28.49 5 6 33 244 -008 063047042 M32M27M25 000 01 28 01 -37.3 -41.2 28.50 8 9 53 264 038 067039041 M25M24M24 000 02 28 02 -35.4 -39.9 28.55 9 11 48 259 -009 063038041 M25M25M25 000 03 28 03 -33.7 -38.7 28.57 7 9 53 264 -082 061036039 M25M25M25 000 04 28 04 -32.4 -38.1 28.58 7 8 73 284 -083 057034042 M25M24M24 000 05 28 05 -32.5 -38.3 28.57 7 8 92 303 -047 056033046 M24M24M23 000 06 28 06 -33.4 -38.7 28.59 8 11 107 318 -006 059031043 M24M23M22 000 07 28 07 -33.1 -38.5 28.58 10 13 100 311 -023 058031045 M22M21M22 000 08 28 08 -32.0 -37.8 28.60 10 15 98 309 -015 056031045 M21M20M21 000 09 28 09 -30.8 -37.2 28.61 10 15 105 316 -008 054030045 M20M20M20 000 10 28 10 -30.0 -36.8 28.60 10 15 119 330 -003 052028039 M19M19M19 000 11 28 11 -29.6 -36.6 28.59 10 14 123 334 007 050026034 M19M18M19 000 12 28 12 -29.2 -36.6 28.59 9 13 136 347 042 049024031 M18M18M18 000 13 28 13 -29.3 -36.3 28.61 10 14 148 359 073 051022028 M18M17M17 000 14 28 14 -29.1 -35.9 28.58 9 13 148 359 050 052021024 M19M17M17 000 15 28 15 -28.0 -35.5 28.60 7 10 161 12 059 049023023 M19M17M17 000 16 28 16 -26.6 -34.9 28.61 6 9 179 30 027 045023025 M19M18M18 000 17 28 17 -25.6 -34.7 28.60 5 8 182 33 -032 042022025 M18M17M18 000 18 28 18 -25.3 -34.9 28.58 4 6 175 26 -029 040022023 M18M18M18 000 19 28 19 -24.8 -34.9 28.57 3 4 196 46 -013 039023025 M18M18M18 000 20 28 20 -26.0 -35.2 28.58 6 6 6 217 009 042026040 M20M20M18 000 21 28 21 -30.5 -35.9 28.59 9 10 352 203 009 059024065 M20M18M18 000 22 28 22 -30.7 -36.2 28.61 9 11 360 211 023 059024077 M20M18M18 000 23 28 23 -31.4 -36.6 28.61 10 12 0 211 021 060025076 M20M19M19 000 24 29 00 -31.5 -36.5 28.62 11 14 351 202 010 061027074 M20M20M20 000 25 29 01 -30.9 -36.1 28.62 9 13 338 189 024 060029074 M21M20M20 000 26 29 02 -31.6 -36.6 28.64 9 12 334 185 029 062031073 M22M21M21 000 27 29 03 -32.3 -36.8 28.64 8 11 337 188 015 064034074 M22M22M21 000 28 29 04 -32.2 -36.5 28.66 8 11 340 191 011 066042076 M23M23M22 000 29 29 05 -31.7 -35.9 28.67 8 11 338 189 014 066048079 M23M23M23 000 30 29 06 -29.4 -34.3 28.67 6 9 312 163 002 063048080 M23M23M23 000 31 29 07 -28.3 -33.4 28.67 5 7 305 156 -009 062048080 M23M23M23 000 32 29 08 -28.4 -32.7 28.68 5 6 309 160 -020 066049079 M24M23M23 000 33 29 09 -28.3 -31.8 28.69 5 7 308 159 -019 072053079 M23M23M23 000 34 29 10 -28.3 -30.9 28.68 5 7 298 149 -002 079064080 M23M23M23 000 35 29 11 -28.1 -30.0 28.67 4 6 261 112 -001 084072080 M23M23M23 000 36 29 12 -28.7 -30.3 28.67 4 6 219 70 -005 086076078 M23M23M23 000 37 29 13 -30.3 -31.8 28.68 5 6 169 20 004 087077072 M24M23M23 000 38 29 14 -30.4 -32.7 28.66 5 6 149 0 -010 080075067 M23M23M23 000 39 29 15 -29.3 -32.4 28.65 4 7 160 11 008 074069064 M23M23M23 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 1h) 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.