USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092900 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 29 00 -18.5 -25.1 28.78 2 3 210 60 -001 060071071 M16M14M13 000 03 29 03 -19.6 -23.4 28.79 3 4 42 253 -012 072073057 M16M14M13 000 06 29 06 -21.4 -24.3 28.79 4 5 74 285 -006 077065047 M15M13M12 000 09 29 09 -20.6 -23.2 28.82 4 5 78 289 -008 079056049 M14M12M11 000 12 29 12 -20.9 -24.1 28.80 9 12 90 301 007 076048046 M12M10M10 000 15 29 15 -22.3 -26.0 28.86 17 29 71 282 015 072031032 M13M11M10 000 18 29 18 -21.1 -25.1 28.89 19 31 77 288 -028 070041019 M14M12M12 000 21 29 21 -21.7 -25.6 28.89 16 27 86 297 -006 070035032 M12M11M11 000 24 30 00 -18.8 -22.7 28.87 18 32 85 296 007 072036038 M12M10M09 000 27 30 03 -18.1 -21.3 28.84 19 32 88 299 003 076038038 M12M10M10 000 30 30 06 -18.3 -21.8 28.83 20 34 86 297 -018 074033033 M10M09M08 000 33 30 09 -17.4 -21.3 28.78 18 32 78 289 -033 072034039 M09M07M07 000 36 30 12 -18.8 -22.5 28.75 16 27 92 303 001 073036038 M10M08M08 000 39 30 15 -18.6 -22.3 28.72 16 28 92 303 003 073035038 M09M07M07 000 42 30 18 -18.5 -22.2 28.69 16 28 88 299 007 073033032 M10M07M07 000 45 30 21 -18.1 -21.7 28.65 15 25 88 299 010 073031028 M09M07M06 000 48 01 00 -18.3 -21.8 28.61 15 25 82 293 005 074030035 M10M08M07 000 51 01 03 -19.2 -22.5 28.62 13 23 73 284 -014 076032037 M11M08M08 000 54 01 06 -20.5 -23.7 28.62 12 18 75 286 -017 075033031 M10M08M08 000 57 01 09 -21.0 -24.6 28.62 10 15 69 280 003 073034033 M10M09M09 000 60 01 12 -22.0 -25.3 28.63 9 13 61 272 -001 075040037 M12M10M10 000 63 01 15 -22.5 -25.6 28.66 8 11 57 268 002 076045040 M13M12M11 000 66 01 18 -21.5 -24.6 28.68 6 7 48 259 007 076049041 M15M13M11 000 69 01 21 -21.8 -24.7 28.70 6 7 37 248 -002 077050042 M16M13M11 000 72 02 00 -22.8 -25.6 28.73 6 9 30 241 -006 078052047 M17M14M12 000 75 02 03 -24.2 -26.9 28.76 7 10 22 233 000 079054053 M16M14M13 000 78 02 06 -24.4 -26.8 28.79 6 9 4 215 006 080053056 M17M14M13 000 81 02 09 -25.4 -28.2 28.82 6 11 354 205 013 078045054 M17M15M14 000 84 02 12 -25.5 -27.6 28.85 5 12 321 172 013 082057055 M17M15M15 000 87 02 15 -24.5 -25.0 28.88 5 9 275 126 003 096077065 M17M16M16 000 90 02 18 -23.0 -23.8 28.89 5 8 248 99 012 093085072 M17M16M16 001 93 02 21 -21.8 -23.1 28.87 4 7 220 71 006 089085073 M17M17M17 004 96 03 00 -22.4 -23.6 28.84 5 6 207 58 -010 090085068 M18M17M17 002 99 03 03 -23.5 -24.3 28.80 5 6 211 62 -014 093084067 M19M18M17 001 102 03 06 -25.2 -25.6 28.75 5 6 201 52 -011 096078065 M19M18M17 000 105 03 09 -24.6 -25.3 28.69 4 5 204 55 002 094077066 M19M18M17 000 108 03 12 -23.6 -24.6 28.62 3 5 242 93 005 092080067 M19M18M17 000 111 03 15 -24.1 -25.4 28.56 3 6 272 123 -006 089086072 M20M19M18 001 114 03 18 -23.2 -25.1 28.52 5 8 324 175 000 084090081 M21M19M18 002 117 03 21 -23.0 -25.2 28.47 7 10 336 187 002 083091088 M22M20M19 004 120 04 00 -24.6 -27.0 28.45 8 12 341 192 004 081088090 M23M21M20 006 * 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.