USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025091912 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 19 12 -13.3 -16.9 28.06 4 7 333 184 -003 081055067 M12M10M11 000 01 19 13 -16.4 -19.2 28.06 6 7 340 191 002 079055067 M11M10M11 000 02 19 14 -17.0 -20.0 28.09 7 9 340 191 013 077056071 M10M10M11 000 03 19 15 -17.4 -20.3 28.09 8 12 320 171 -019 078060074 M11M11M11 000 04 19 16 -17.6 -18.8 28.09 8 12 318 169 -032 090064074 M11M11M11 000 05 19 17 -17.2 -17.8 28.09 8 12 315 166 -005 095066071 M11M11M11 000 06 19 18 -16.8 -17.3 28.11 9 13 324 175 -000 096068072 M11M11M11 001 07 19 19 -16.6 -17.2 28.13 9 14 330 181 -003 095074075 M12M11M11 001 08 19 20 -16.3 -17.1 28.15 9 13 323 174 023 094077073 M11M11M11 001 09 19 21 -16.0 -16.9 28.16 9 13 324 175 005 093086081 M12M11M12 001 10 19 22 -15.8 -16.9 28.17 9 14 317 168 005 091096085 M13M12M13 003 11 19 23 -15.7 -17.2 28.19 8 13 311 162 018 088093087 M13M12M13 015 12 20 00 -15.7 -17.5 28.20 7 11 309 160 027 086090089 M13M13M13 026 13 20 01 -15.9 -17.7 28.27 7 11 321 172 034 086088089 M14M13M13 037 14 20 02 -16.5 -18.4 28.28 9 13 336 187 003 085088089 M14M14M14 031 15 20 03 -18.2 -20.2 28.31 11 16 346 197 011 084087086 M14M14M14 022 16 20 04 -19.2 -21.3 28.35 12 19 350 201 016 084086083 M15M14M14 013 17 20 05 -20.2 -22.3 28.40 14 21 355 206 023 083084083 M15M14M14 006 18 20 06 -21.2 -23.3 28.43 15 23 2 212 042 084083080 M16M14M14 004 19 20 07 -22.1 -24.1 28.48 17 25 6 217 060 084083077 M17M15M15 002 20 20 08 -23.5 -25.4 28.53 17 26 10 221 091 085081077 M18M15M15 001 21 20 09 -24.4 -26.1 28.58 15 24 17 228 078 086083075 M18M15M15 000 22 20 10 -24.6 -26.2 28.62 15 23 23 234 069 086081074 M17M15M15 000 23 20 11 -24.5 -26.1 28.63 14 21 25 236 077 087080071 M17M16M15 000 24 20 12 -24.6 -26.1 28.67 13 20 23 234 082 087081068 M18M16M16 000 25 20 13 -24.5 -26.0 28.72 13 19 24 235 071 087079064 M18M16M16 000 26 20 14 -24.1 -25.7 28.75 12 19 24 235 109 087077062 M18M16M16 000 27 20 15 -24.1 -25.7 28.77 11 16 23 234 111 087077065 M18M16M16 000 28 20 16 -23.8 -25.4 28.79 10 14 22 233 107 086078069 M18M17M16 000 29 20 17 -23.0 -24.8 28.82 8 12 20 231 100 085077075 M18M17M16 000 30 20 18 -21.9 -23.8 28.82 9 12 13 224 049 084075081 M17M16M16 000 31 20 19 -21.3 -23.4 28.84 4 7 347 198 -098 083080091 M18M17M17 002 32 20 20 -20.5 -22.8 28.85 5 6 345 196 -019 082084090 M18M18M18 012 33 20 21 -20.1 -22.4 28.86 6 6 3 214 -057 082084086 M17M17M18 012 34 20 22 -20.4 -22.7 28.87 4 4 345 196 -036 082087083 M18M18M18 004 35 20 23 -20.7 -23.0 28.89 4 5 319 170 025 082089082 M19M19M19 002 36 21 00 -21.1 -23.4 28.90 5 6 315 166 011 082089079 M20M19M19 002 37 21 01 -21.6 -23.8 28.90 5 7 324 175 060 082087078 M20M19M19 002 38 21 02 -21.7 -24.0 28.91 5 7 345 196 010 082083082 M19M19M18 003 39 21 03 -22.1 -24.5 28.92 6 8 349 200 -009 081083083 M19M19M19 007 * 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.