USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092612 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 26 12 -31.8 -34.9 28.49 16 17 30 241 -024 072062044 M28M24M22 000 01 26 13 -35.6 -38.7 28.49 18 28 36 247 059 073065043 M26M23M22 000 02 26 14 -35.4 -38.3 28.53 19 29 39 250 050 075064045 M27M23M22 000 03 26 15 -35.4 -38.4 28.52 19 29 38 249 044 074062047 M26M23M22 000 04 26 16 -35.4 -38.3 28.57 18 28 38 249 080 075057049 M26M23M22 000 05 26 17 -35.3 -38.3 28.57 18 27 38 249 085 074060053 M26M23M22 000 06 26 18 -35.0 -37.9 28.57 17 27 39 250 114 075066054 M26M23M22 000 07 26 19 -34.2 -37.1 28.56 17 26 40 251 096 076068053 M26M23M22 000 08 26 20 -33.5 -36.3 28.57 17 27 41 252 111 076073053 M25M23M22 000 09 26 21 -33.1 -35.9 28.55 17 27 45 256 128 076080059 M26M24M23 000 10 26 22 -33.0 -35.8 28.57 17 27 46 257 120 076081072 M26M24M23 001 11 26 23 -33.1 -36.0 28.58 16 27 47 258 135 075081065 M27M24M23 001 12 27 00 -33.0 -35.8 28.59 17 27 49 260 130 076083052 M27M24M23 001 13 27 01 -32.8 -35.5 28.59 17 28 45 256 120 076078048 M26M24M22 001 14 27 02 -32.7 -35.4 28.59 17 28 38 249 121 077071045 M26M23M22 001 15 27 03 -32.7 -35.3 28.60 17 27 33 244 145 077067044 M25M23M22 000 16 27 04 -33.2 -35.8 28.60 16 26 38 249 136 078069044 M25M23M21 000 17 27 05 -32.9 -35.4 28.62 16 26 40 251 152 079072044 M25M23M21 000 18 27 06 -33.0 -35.3 28.61 16 25 42 253 134 079064043 M24M22M21 000 19 27 07 -32.1 -34.2 28.61 15 23 37 248 133 082073041 M23M21M20 000 20 27 08 -31.7 -33.6 28.62 15 23 31 242 114 083078042 M22M21M20 000 21 27 09 -32.2 -34.4 28.64 14 21 43 254 124 081083044 M22M21M20 000 22 27 10 -31.9 -34.0 28.66 13 20 44 255 094 081085049 M22M21M20 000 23 27 11 -31.3 -33.4 28.64 13 20 39 250 076 082084054 M22M20M20 000 24 27 12 -30.8 -32.7 28.65 14 20 35 246 070 083081058 M21M20M19 000 25 27 13 -30.5 -32.4 28.66 14 20 34 245 054 084080062 M21M19M19 000 26 27 14 -30.5 -32.4 28.67 14 21 32 243 039 084079063 M21M19M18 000 27 27 15 -30.5 -32.4 28.67 14 21 33 244 031 084078066 M20M18M18 000 28 27 16 -30.4 -32.3 28.68 14 21 31 242 024 083079067 M20M18M18 000 29 27 17 -30.3 -32.5 28.69 14 21 29 240 003 081078069 M21M18M18 000 30 27 18 -30.3 -32.8 28.70 14 21 28 239 004 079073068 M21M19M18 000 31 27 19 -30.1 -32.6 28.71 14 22 27 238 010 079069069 M21M19M18 000 32 27 20 -29.7 -32.3 28.71 14 22 25 236 017 078064068 M21M19M18 000 33 27 21 -29.3 -31.8 28.74 14 22 26 237 026 079034065 M21M18M18 000 34 27 22 -29.3 -31.5 28.74 14 22 29 240 039 081035054 M21M18M18 000 35 27 23 -29.1 -31.3 28.75 15 22 29 240 067 081039056 M20M18M18 000 36 28 00 -28.8 -31.0 28.75 15 22 28 239 085 082040061 M21M18M18 000 37 28 01 -28.8 -30.9 28.78 14 22 28 239 091 082035058 M21M19M18 000 38 28 02 -28.9 -31.0 28.77 14 21 31 242 100 082032048 M21M19M18 000 39 28 03 -28.9 -31.1 28.78 14 20 34 245 096 081027036 M20M19M18 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.