USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092612 AMPS 8km 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 -31.5 -35.1 28.52 16 17 31 242 -008 073059043 M28M24M22 000 03 26 15 -35.4 -38.4 28.55 17 29 41 252 004 074066048 M27M24M22 001 06 26 18 -35.0 -38.0 28.60 15 27 42 253 043 074068055 M27M24M23 001 09 26 21 -33.1 -35.9 28.57 15 27 47 258 052 076080063 M26M24M23 001 12 27 00 -32.9 -35.8 28.61 16 27 50 261 056 075083056 M27M25M23 003 15 27 03 -32.8 -35.5 28.63 15 27 36 247 065 077070046 M26M23M22 002 18 27 06 -33.1 -35.5 28.63 14 25 45 256 067 079069043 M24M22M21 001 21 27 09 -32.4 -34.7 28.66 12 21 45 256 048 081084047 M23M21M20 001 24 27 12 -31.3 -33.3 28.67 11 19 40 251 023 083082061 M22M20M19 001 27 27 15 -31.1 -33.0 28.69 11 19 37 248 003 083080068 M21M19M19 001 30 27 18 -30.7 -33.2 28.72 12 20 32 243 -015 079070071 M22M19M19 000 33 27 21 -29.6 -32.1 28.75 12 21 30 241 001 079039065 M22M19M18 000 36 28 00 -29.1 -31.4 28.77 12 20 32 243 027 081043059 M21M19M18 000 39 28 03 -29.4 -31.6 28.80 11 19 38 249 036 081032037 M21M19M18 000 42 28 06 -30.8 -32.9 28.83 11 16 56 267 031 082028037 M20M19M18 000 45 28 09 -29.7 -31.6 28.84 9 12 76 287 -005 084048049 M19M18M18 000 48 28 12 -27.9 -30.1 28.82 8 10 100 311 -008 081066054 M18M18M18 000 51 28 15 -28.1 -31.1 28.83 9 13 117 328 -002 075047052 M17M17M17 000 54 28 18 -26.8 -31.1 28.80 9 13 136 347 -003 067041041 M16M16M16 000 57 28 21 -26.3 -30.9 28.76 9 12 174 25 -000 065033037 M16M15M14 000 60 29 00 -26.0 -30.8 28.73 8 11 180 31 -009 064038038 M16M14M14 000 63 29 03 -25.2 -30.4 28.73 6 8 189 40 -004 062041041 M15M13M13 000 66 29 06 -23.2 -29.1 28.74 2 3 155 6 -011 059047056 M15M14M14 000 69 29 09 -23.7 -28.9 28.74 5 6 316 167 001 062046060 M16M14M13 000 72 29 12 -25.1 -29.7 28.75 4 5 316 167 -003 065048060 M16M14M13 000 75 29 15 -23.7 -29.2 28.78 1 3 247 98 015 060052063 M16M14M13 000 78 29 18 -24.6 -29.1 28.77 4 5 123 334 001 066060054 M16M14M13 000 81 29 21 -24.8 -28.4 28.75 8 10 144 355 009 072048049 M18M15M13 000 84 30 00 -25.3 -28.9 28.73 9 14 113 324 004 072041061 M18M15M13 000 87 30 03 -26.6 -29.8 28.70 12 23 111 322 020 074043042 M17M16M14 000 90 30 06 -25.5 -28.7 28.67 9 14 99 310 030 075049036 M18M15M12 000 93 30 09 -26.6 -29.8 28.65 8 11 100 311 020 074050040 M18M14M12 000 96 30 12 -27.2 -30.3 28.60 8 11 88 299 028 075050041 M18M15M13 000 99 30 15 -29.2 -31.9 28.58 10 14 73 284 022 077058048 M18M15M14 000 102 30 18 -28.2 -31.0 28.58 10 17 69 280 034 077063059 M17M15M15 000 105 30 21 -27.2 -30.0 28.56 12 22 64 275 049 077071060 M19M16M15 000 108 01 00 -27.2 -29.9 28.57 13 24 58 269 014 078066052 M19M16M15 000 111 01 03 -28.5 -31.1 28.57 13 23 60 271 017 078063047 M20M16M14 000 114 01 06 -29.3 -31.7 28.60 13 23 65 276 017 080064049 M19M16M15 000 117 01 09 -28.7 -30.9 28.63 13 24 53 264 034 081059046 M19M16M14 000 120 01 12 -28.3 -30.1 28.66 12 21 53 264 029 085056044 M17M15M14 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.