USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2025-12-07/00 UTC MPAS cell scale: 2.3 km 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) (*) 0 07 00 -9.6 -12.1 29.40 1 1 324 175 -001 71 53 53 -9 -9-10 000 1 07 01 -9.2 -12.6 29.40 1 2 359 210 000 81 56 57 -9 -9-10 000 2 07 02 -9.2 -12.2 29.39 2 2 11 222 000 84 56 58 -9 -9-10 000 3 07 03 -9.5 -11.8 29.38 2 2 6 217 000 88 56 59 -9 -9-10 000 4 07 04 -10.1 -12.0 29.38 3 3 15 226 000 91 56 59 -9 -9-10 000 5 07 05 -10.8 -12.7 29.39 4 5 22 233 000 93 56 59 -9 -9-10 000 6 07 06 -11.7 -13.3 29.38 5 6 20 231 000 96 56 59 -9 -9-10 000 7 07 07 -12.4 -13.9 29.38 5 6 23 234 000 98 55 59 -8 -9-10 000 8 07 08 -12.9 -14.6 29.36 5 7 26 237 000 97 56 59 -8 -9-10 000 9 07 09 -13.2 -15.3 29.36 5 7 28 239 000 93 56 59 -8 -9-10 000 10 07 10 -13.4 -15.6 29.36 5 7 28 239 000 92 56 59 -8 -9-10 000 11 07 11 -13.5 -15.8 29.35 6 7 32 243 -001 91 56 59 -8 -9-10 000 12 07 12 -13.5 -15.8 29.34 6 7 30 241 -002 90 56 58 -9 -9-10 000 13 07 13 -13.0 -15.4 29.33 6 8 32 243 -002 90 57 59 -9 -9-10 000 14 07 14 -12.6 -14.9 29.33 6 9 32 243 000 90 57 59 -9 -9-10 000 15 07 15 -12.0 -14.3 29.34 6 10 30 241 000 91 57 58 -9 -9-10 000 16 07 16 -11.5 -13.7 29.33 6 10 30 241 002 92 57 56 -9 -9-10 000 17 07 17 -10.9 -13.0 29.33 7 10 28 239 001 92 57 56 -9 -9-10 000 18 07 18 -10.2 -12.2 29.32 8 10 24 235 002 93 58 66 -9 -9-10 000 19 07 19 -9.7 -11.9 29.32 8 10 21 232 002 91 59 90 -9 -9-10 000 20 07 20 -9.5 -11.7 29.31 8 10 20 231 002 90 66 94 -9 -9-10 000 21 07 21 -9.2 -11.1 29.30 8 10 16 227 001 93 81 90 -9-10-10 000 22 07 22 -9.1 -10.9 29.29 8 10 14 225 000 94101 94 -9-10-11 000 23 07 23 -8.7 -9.4 29.28 8 10 17 228 000 103 93 96 -10-10-11 000 24 08 00 -8.3 -9.1 29.28 8 10 17 228 -001 101 99 97 -10-10-11 003 25 08 01 -8.1 -9.2 29.28 8 9 21 232 -003 98 99 99 -9-10-11 010 26 08 02 -8.0 -9.3 29.28 7 8 25 236 -003 97100 99 -9-10-11 013 27 08 03 -7.9 -9.2 29.27 7 8 30 241 -001 97100 99 -9-10-11 010 28 08 04 -8.0 -9.3 29.26 7 8 34 245 000 97100100 -9-10-11 008 29 08 05 -8.1 -9.5 29.25 6 7 33 244 000 96 96102 -9-10-11 008 30 08 06 -8.1 -9.5 29.25 4 5 32 243 000 96 98104 -9-10-11 011 31 08 07 -8.2 -9.5 29.25 3 3 37 248 -002 98 99103 -9-10-11 017 32 08 08 -9.1 -10.1 29.26 2 3 56 267 -002 101 99101 -9-10-11 007 33 08 09 -9.4 -10.3 29.26 0 3 33 244 000 102104104 -9-11-11 005 34 08 10 -9.9 -10.5 29.26 1 5 303 154 000 104101105 -9-10-11 009 35 08 11 -10.8 -11.1 29.27 3 6 284 135 000 109108105 -9-10-11 004 36 08 12 -9.9 -10.6 29.27 3 7 259 110 000 106106103 -9-10-11 003 37 08 13 -9.3 -9.6 29.29 7 9 214 65 000 108109110 -10-10-11 001 38 08 14 -9.5 -10.0 29.30 7 10 217 68 000 105111106 -10-11-12 002 39 08 15 -9.9 -10.0 29.31 8 9 230 81 000 110110101 -11-11-12 001 40 08 16 -10.3 -10.4 29.32 8 9 235 86 000 110109 99 -11-11-12 001 41 08 17 -10.9 -11.0 29.34 9 11 237 88 000 111105 98 -12-11-11 000 42 08 18 -11.0 -11.2 29.36 9 12 237 88 000 110101101 -12-11-12 000 43 08 19 -10.4 -10.8 29.37 11 13 238 89 000 108100104 -12-11-12 001 44 08 20 -9.9 -10.7 29.38 12 14 239 90 000 104113102 -11-13-12 001 45 08 21 -9.9 -10.6 29.40 13 14 243 94 000 103113102 -11-13-12 001 46 08 22 -9.3 -10.5 29.42 13 16 243 94 000 98113102 -11-12-13 002 47 08 23 -8.2 -9.6 29.43 14 17 250 101 000 95111103 -10-11-12 006 48 09 00 -8.6 -9.7 29.45 15 19 246 97 -001 99112107 -10-11-12 004 49 09 01 -8.5 -10.0 29.46 12 17 241 92 -001 95109109 -10-11-12 002 50 09 02 -8.0 -9.8 29.48 10 14 247 98 000 93108116 -9-11-11 005 51 09 03 -8.2 -9.6 29.49 13 16 250 101 000 96111116 -9-11-12 011 52 09 04 -8.4 -9.8 29.51 11 14 250 101 000 96110116 -10-11-12 006 53 09 05 -8.5 -9.9 29.52 11 12 259 110 000 96110116 -10-11-12 006 54 09 06 -8.7 -9.9 29.53 9 10 264 115 000 98111117 -10-11-12 004 55 09 07 -9.0 -10.2 29.53 8 9 268 119 000 99104117 -10-11-12 004 56 09 08 -9.0 -10.8 29.54 8 9 291 142 001 93110 98 -10-12-13 003 57 09 09 -9.5 -10.7 29.54 6 7 290 141 000 99107 81 -10-12-13 000 58 09 10 -9.7 -11.3 29.55 4 7 300 151 -001 95108 87 -11-12-13 000 59 09 11 -11.0 -12.8 29.54 3 8 299 150 -001 95104 82 -11-12-13 000 60 09 12 -12.7 -13.5 29.55 5 9 322 173 -001 108105 75 -11-12-13 000 61 09 13 -11.9 -12.1 29.55 4 10 337 188 000 112113 66 -11-12-12 000 62 09 14 -11.0 -11.8 29.54 6 9 7 218 001 104 99 63 -12-12-11 000 63 09 15 -11.0 -11.4 29.54 9 10 3 214 000 109 89 57 -12-12-12 000 64 09 16 -11.0 -11.3 29.53 10 11 7 218 000 109 89 60 -12-12-12 000 65 09 17 -11.1 -11.4 29.52 11 12 9 220 000 110 90 63 -12-11-12 000 66 09 18 -10.2 -10.3 29.52 12 13 9 220 000 110113 64 -11-13-11 000 67 09 19 -9.6 -10.4 29.51 12 14 9 220 000 103113 63 -11-12-13 000 68 09 20 -9.1 -9.7 29.50 12 13 14 225 000 104112 59 -10-12-13 000 69 09 21 -8.3 -9.8 29.49 12 13 16 227 002 95111 51 -10-11-12 000 70 09 22 -8.0 -10.1 29.48 10 12 18 229 000 90107 70 -9-11-12 000 71 09 23 -7.8 -10.1 29.47 10 11 18 229 000 88103107 -9-11-12 000 72 10 00 -8.1 -10.5 29.46 9 10 21 232 001 87 98117 -9-11-12 000 73 10 01 -7.9 -10.4 29.44 8 10 36 247 003 85 96116 -9-10-12 000 74 10 02 -7.9 -9.7 29.43 8 10 51 262 001 92110116 -9-11-12 000 75 10 03 -8.1 -9.8 29.41 11 13 58 269 001 93 90116 -9-10-12 000 76 10 04 -8.2 -10.2 29.39 12 14 74 285 003 90 93117 -9-11-12 000 77 10 05 -9.7 -11.4 29.38 11 16 73 284 002 94 80 72 -10-11-12 000 78 10 06 -10.3 -11.0 29.36 8 15 87 298 002 106 81 50 -10-11-12 000 79 10 07 -10.7 -11.0 29.34 8 16 92 303 000 110 71 41 -10-11-12 000 80 10 08 -11.1 -11.4 29.32 10 20 96 307 000 111 86 32 -10-11-12 000 81 10 09 -11.3 -12.0 29.30 12 22 96 307 001 107 88 33 -10-11-12 000 82 10 10 -11.2 -11.5 29.28 12 22 94 305 001 111 84 36 -9-10-11 000 83 10 11 -11.5 -11.8 29.26 12 21 91 302 000 111 68 29 -9-10-11 000 84 10 12 -11.9 -12.2 29.24 11 21 87 298 002 111 57 31 -9-10-10 000 85 10 13 -11.6 -12.7 29.22 11 20 88 299 001 103 52 28 -9 -9-10 000 86 10 14 -11.3 -13.6 29.20 11 22 87 298 000 90 54 20 -8 -9-10 000 87 10 15 -10.6 -13.6 29.18 12 23 86 297 001 83 51 13 -8 -9 -9 000 88 10 16 -9.9 -13.3 29.16 13 24 84 295 000 80 53 13 -8 -9 -9 000 89 10 17 -9.2 -12.5 29.14 13 22 87 298 000 80 49 13 -8 -8 -9 000 90 10 18 -8.7 -12.0 29.13 12 20 88 299 002 80 43 12 -8 -8 -8 000 91 10 19 -8.5 -11.7 29.11 12 18 87 298 -001 80 34 14 -7 -7 -8 000 92 10 20 -8.2 -11.6 29.09 13 19 84 295 000 78 31 14 -7 -7 -8 000 93 10 21 -7.9 -11.5 29.08 12 19 81 292 000 76 33 12 -7 -7 -8 000 94 10 22 -7.7 -11.4 29.07 12 20 80 291 000 75 31 16 -7 -7 -8 000 95 10 23 -7.6 -11.3 29.05 12 19 82 293 000 76 30 36 -6 -7 -8 000 96 11 00 -7.4 -11.2 29.04 12 19 82 293 -001 75 50 90 -6 -7 -8 000 97 11 01 -7.2 -10.5 29.02 12 19 80 291 001 79 77 95 -6 -7 -7 000 98 11 02 -6.9 -10.4 29.01 13 20 74 285 001 77 75 95 -6 -7 -7 000 99 11 03 -7.2 -10.7 28.99 13 21 76 287 000 77 87 97 -6 -7 -7 000 100 11 04 -7.2 -11.0 28.97 13 22 77 288 000 74 97 93 -6 -6 -7 000 101 11 05 -7.6 -11.0 28.96 13 21 76 287 000 78101 91 -6 -6 -7 000 102 11 06 -7.5 -9.2 28.94 12 20 78 289 000 92 94 90 -5 -6 -7 000 103 11 07 -7.2 -8.3 28.93 12 20 79 290 000 98 92 97 -5 -5 -6 001 104 11 08 -6.0 -6.9 28.92 13 19 72 283 001 98 98108 -5 -5 -6 001 105 11 09 -5.3 -6.0 28.90 13 19 72 284 -002 100103103 -5 -5 -6 001 106 11 10 -4.9 -5.2 28.90 12 17 64 275 000 102102103 -5 -5 -6 003 107 11 11 -4.8 -4.9 28.89 11 13 59 270 -010 104 96109 -4 -4 -5 000 108 11 12 -4.5 -4.7 28.88 11 15 52 263 -003 103105 99 -4 -5 -5 005 109 11 13 -4.0 -4.0 28.87 12 16 43 254 003 104105104 -4 -5 -5 013 110 11 14 -3.3 -3.4 28.86 12 15 14 225 002 103105 96 -4 -5 -6 014 111 11 15 -3.1 -3.1 28.86 12 16 6 217 -003 103105 93 -4 -5 -6 007 112 11 16 -2.9 -3.0 28.86 12 15 2 213 -005 102105101 -4 -5 -6 004 113 11 17 -2.7 -3.3 28.86 12 14 357 208 -007 97 95102 -4 -4 -5 003 114 11 18 -2.6 -3.5 28.86 12 14 345 196 -001 95 90 94 -3 -4 -5 002 115 11 19 -2.4 -3.1 28.87 11 13 342 193 000 96 98109 -4 -4 -6 002 116 11 20 -2.1 -3.1 28.87 9 11 340 191 000 93101108 -3 -5 -5 001 117 11 21 -2.2 -3.3 28.89 11 14 341 192 -002 93 87101 -3 -4 -5 002 118 11 22 -2.1 -3.0 28.90 12 15 338 189 000 95 97109 -3 -4 -5 005 119 11 23 -2.2 -3.1 28.91 12 15 341 192 -001 94 97108 -3 -4 -5 023 120 12 00 -2.5 -3.2 28.92 15 17 335 186 -004 97 94 98 -4 -5 -5 034 * 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.