USAP Siple Dome (SDM) (lat, lon) = (-81.664, -149.0175) Forecast initialized at 2025092112 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 21 12 -25.4 -28.1 28.81 11 13 343 194 -007 075078079 M24M23M22 000 01 21 13 -28.4 -31.0 28.86 11 16 357 208 -011 079075077 M23M22M22 001 02 21 14 -29.2 -31.5 28.84 12 17 2 213 -018 081076083 M24M22M22 000 03 21 15 -29.7 -32.0 28.88 12 18 5 216 -028 080077087 M24M22M22 000 04 21 16 -29.6 -32.0 28.86 12 18 9 220 -013 080077086 M24M22M22 002 05 21 17 -29.6 -32.1 28.88 12 18 10 221 -023 079076084 M24M23M22 002 06 21 18 -29.7 -32.2 28.88 11 17 13 224 -044 079076082 M24M23M23 001 07 21 19 -29.7 -32.1 28.88 11 16 18 229 -037 079075083 M24M23M23 001 08 21 20 -29.6 -31.9 28.88 11 15 21 232 -025 080075085 M24M23M23 000 09 21 21 -29.5 -31.8 28.88 10 14 23 234 -029 080074084 M24M23M23 000 10 21 22 -29.5 -31.8 28.88 9 12 31 242 -026 080074082 M24M23M23 000 11 21 23 -29.5 -31.6 28.83 8 10 41 252 -042 082076082 M24M24M24 000 12 22 00 -29.4 -31.5 28.85 8 11 49 260 -032 082077081 M24M24M24 000 13 22 01 -29.6 -31.6 28.85 9 12 55 266 -013 083078080 M24M24M24 000 14 22 02 -30.0 -32.0 28.85 10 13 62 273 -009 083078078 M24M24M24 000 15 22 03 -30.2 -32.1 28.82 11 15 68 279 -003 083077073 M24M23M24 000 16 22 04 -30.3 -32.2 28.83 11 15 71 282 -015 084076073 M23M23M23 000 17 22 05 -30.2 -31.9 28.80 11 16 74 285 -027 085075074 M23M23M23 000 18 22 06 -30.0 -31.5 28.78 11 16 75 286 -026 087075073 M22M22M23 000 19 22 07 -29.8 -31.4 28.78 10 15 85 296 -016 086074072 M22M22M23 000 20 22 08 -29.9 -31.4 28.76 11 16 93 304 001 086075073 M22M22M23 000 21 22 09 -29.8 -31.3 28.75 11 17 90 301 -003 086075071 M22M22M23 000 22 22 10 -29.8 -31.5 28.73 12 18 89 300 006 085073068 M22M22M22 000 23 22 11 -29.8 -32.0 28.70 12 19 87 298 013 081069067 M22M22M22 000 24 22 12 -29.8 -32.5 28.68 12 19 87 298 -002 077065065 M22M22M22 000 25 22 13 -29.7 -32.8 28.67 12 18 87 298 005 074063063 M22M21M22 000 26 22 14 -29.6 -33.1 28.65 12 17 88 299 003 072059063 M22M21M22 000 27 22 15 -29.7 -33.4 28.64 11 17 88 299 -004 070051062 M22M21M22 000 28 22 16 -29.6 -33.6 28.61 11 16 87 298 -004 068039063 M21M21M21 000 29 22 17 -29.4 -33.6 28.61 11 16 86 297 -017 067034064 M21M21M21 000 30 22 18 -29.0 -33.5 28.58 11 15 85 296 -006 066033060 M21M21M21 000 31 22 19 -28.6 -33.2 28.55 10 13 88 299 -001 065033057 M21M21M21 000 32 22 20 -28.2 -32.8 28.53 9 12 93 304 -007 065033055 M21M21M21 000 33 22 21 -27.7 -32.2 28.52 8 11 93 304 -015 065034054 M20M21M21 000 34 22 22 -27.1 -31.7 28.50 8 10 91 302 -016 066037052 M20M21M21 000 35 22 23 -26.6 -31.1 28.48 7 9 87 298 -017 066041050 M20M20M21 000 36 23 00 -26.0 -30.4 28.47 6 8 91 302 -033 067047049 M20M20M21 000 37 23 01 -25.0 -29.4 28.45 5 6 88 299 -041 067052048 M20M20M21 000 38 23 02 -24.8 -28.9 28.43 4 5 100 311 -037 069053045 M20M20M21 000 39 23 03 -25.0 -28.7 28.41 4 6 113 324 -007 072053043 M20M20M21 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.