USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-11-12/00 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 12 00 -18.4 -22.3 28.54 4 4 359 210 000 75 62 56 -17-17-17 000 1 12 01 -18.8 -22.0 28.53 6 8 12 223 -001 89 62 56 -17-16-17 000 2 12 02 -19.3 -22.3 28.54 6 9 22 233 000 91 58 56 -17-16-17 000 3 12 03 -19.8 -22.9 28.53 6 9 27 238 000 90 55 57 -17-16-17 000 4 12 04 -20.1 -23.3 28.53 7 10 35 246 001 88 54 58 -16-16-17 000 5 12 05 -20.6 -23.6 28.54 8 11 37 248 001 91 55 59 -16-16-16 000 6 12 06 -21.1 -24.0 28.55 7 9 41 252 002 92 55 60 -16-16-16 000 7 12 07 -21.7 -24.5 28.53 7 8 40 251 001 93 56 62 -16-16-17 000 8 12 08 -21.3 -24.2 28.52 5 5 40 251 000 91 57 61 -15-16-17 000 9 12 09 -20.1 -23.6 28.53 3 3 39 250 000 87 60 59 -15-16-17 000 10 12 10 -19.7 -23.6 28.53 0 4 66 277 -001 82 63 60 -16-17-17 000 11 12 11 -19.8 -23.7 28.54 2 7 174 25 000 82 61 64 -16-16-17 000 12 12 12 -20.6 -23.7 28.52 3 7 144 355 000 90 59 66 -16-16-17 000 13 12 13 -21.1 -23.8 28.53 4 7 126 337 000 94 62 58 -16-16-17 000 14 12 14 -20.8 -23.8 28.52 3 6 119 330 -001 92 65 52 -16-17-17 000 15 12 15 -20.3 -23.8 28.53 3 5 107 318 000 87 63 50 -16-16-17 000 16 12 16 -19.8 -23.7 28.53 2 3 96 307 000 84 61 50 -16-17-17 000 17 12 17 -19.4 -23.7 28.55 2 2 74 285 000 80 58 49 -16-17-17 000 18 12 18 -19.2 -23.7 28.54 2 2 43 254 000 79 55 50 -17-17-17 000 19 12 19 -19.2 -23.8 28.54 3 4 356 207 000 74 49 50 -17-17-17 000 20 12 20 -18.8 -23.2 28.55 3 4 337 188 000 74 46 50 -17-17-17 000 21 12 21 -18.1 -22.4 28.57 2 3 323 174 000 74 47 50 -17-17-17 000 22 12 22 -17.7 -21.8 28.57 2 3 313 164 000 75 48 50 -17-17-17 000 23 12 23 -17.6 -21.4 28.56 2 2 337 188 000 77 59 50 -17-17-18 000 24 13 00 -18.1 -20.9 28.58 3 3 6 217 000 92 60 50 -17-17-17 000 25 13 01 -18.6 -21.4 28.59 4 5 8 219 000 93 62 50 -17-17-17 000 26 13 02 -19.2 -21.9 28.61 5 6 14 225 000 94 63 50 -17-17-17 000 27 13 03 -19.8 -22.1 28.61 5 6 20 231 000 98 63 50 -16-17-17 000 28 13 04 -20.5 -22.8 28.61 5 6 30 241 001 98 64 50 -16-17-17 000 29 13 05 -20.9 -23.6 28.63 5 5 39 250 000 95 65 49 -16-17-17 000 30 13 06 -21.3 -24.3 28.64 6 6 47 258 000 91 65 49 -16-17-17 000 31 13 07 -21.4 -24.7 28.65 5 5 51 262 000 87 64 50 -16-17-17 000 32 13 08 -20.6 -24.4 28.65 4 4 59 270 000 84 61 53 -16-16-17 000 33 13 09 -20.3 -24.5 28.65 4 4 70 281 000 81 60 60 -16-16-17 000 34 13 10 -20.3 -24.5 28.65 4 5 88 299 000 82 58 58 -15-16-16 000 35 13 11 -21.6 -25.3 28.66 6 7 95 306 000 82 55 57 -15-16-16 000 36 13 12 -21.5 -25.2 28.68 6 8 93 304 000 81 53 63 -15-15-16 000 37 13 13 -20.7 -24.7 28.68 6 7 92 303 000 80 48 60 -14-15-16 000 38 13 14 -20.7 -24.9 28.68 6 7 95 306 001 77 51 63 -14-15-16 000 39 13 15 -19.8 -24.7 28.69 6 8 103 314 001 70 46 63 -14-15-16 000 40 13 16 -18.8 -24.4 28.70 4 7 106 317 000 68 45 62 -14-15-16 000 41 13 17 -17.7 -24.3 28.70 3 6 113 324 000 63 45 58 -14-15-16 000 42 13 18 -17.0 -24.2 28.71 3 5 127 338 000 59 45 52 -14-15-16 000 43 13 19 -16.6 -23.8 28.73 2 5 135 346 000 58 44 49 -14-15-15 000 44 13 20 -16.3 -23.4 28.72 2 5 128 339 000 59 43 50 -14-15-15 000 45 13 21 -16.3 -22.4 28.72 2 4 116 327 000 60 43 48 -14-15-15 000 46 13 22 -16.2 -21.4 28.73 3 4 100 311 001 62 43 47 -14-15-15 000 47 13 23 -16.1 -20.7 28.74 4 5 69 280 000 67 42 46 -14-14-15 000 48 14 00 -16.3 -20.6 28.75 4 6 52 263 000 73 43 44 -14-14-15 000 49 14 01 -16.5 -20.6 28.75 5 7 53 264 000 74 42 43 -14-14-15 000 50 14 02 -17.0 -21.6 28.74 5 7 58 269 000 68 41 44 -14-14-15 000 51 14 03 -17.4 -22.3 28.75 5 7 62 273 000 65 40 47 -13-14-15 000 52 14 04 -17.9 -23.2 28.76 6 7 65 276 000 62 39 52 -13-14-15 000 53 14 05 -18.3 -23.8 28.75 7 8 66 277 000 61 43 52 -13-14-15 000 54 14 06 -18.8 -24.1 28.75 7 9 70 281 000 63 42 43 -13-13-14 000 55 14 07 -19.1 -24.3 28.74 7 9 74 285 000 65 41 42 -13-13-14 000 56 14 08 -19.3 -24.4 28.73 7 8 82 293 001 67 39 40 -13-13-14 000 57 14 09 -19.6 -24.6 28.72 7 10 98 309 001 68 38 38 -12-13-14 000 58 14 10 -19.7 -24.9 28.71 9 14 114 325 -001 65 33 34 -12-13-13 000 59 14 11 -19.7 -24.5 28.70 9 16 118 329 003 70 33 37 -12-12-12 000 60 14 12 -19.5 -24.3 28.68 10 18 121 332 000 70 37 41 -12-11-12 000 61 14 13 -18.9 -23.2 28.67 10 20 116 327 000 76 38 37 -11-11-10 000 62 14 14 -18.2 -21.5 28.65 10 21 110 321 001 85 32 33 -10-10-10 000 63 14 15 -17.3 -21.2 28.61 11 21 109 320 000 79 33 28 -9-10-10 000 64 14 16 -17.9 -21.8 28.58 12 24 104 315 000 81 31 25 -10 -9 -9 000 65 14 17 -18.2 -21.8 28.54 16 26 95 306 -007 84 28 21 -11 -9 -9 000 66 14 18 -17.5 -21.0 28.51 18 30 91 302 -004 85 23 19 -13 -8 -8 000 67 14 19 -16.1 -19.7 28.48 22 33 96 307 -004 83 23 18 -15 -8 -8 000 68 14 20 -15.2 -18.5 28.44 22 35 102 313 -002 84 40 17 -15-11 -8 000 69 14 21 -14.0 -16.9 28.40 26 39 101 312 -001 87 72 50 -15-14-12 000 70 14 22 -12.5 -15.3 28.36 27 37 86 297 008 87 74 19 -13-13-11 000 71 14 23 -12.3 -15.2 28.34 24 33 84 295 000 86 64 90 -13-11-11 000 72 15 00 -11.8 -14.7 28.31 20 27 83 294 001 85 54 86 -12-11 -9 000 73 15 01 -11.5 -13.7 28.28 18 25 75 286 000 92 60 94 -12-11 -9 000 74 15 02 -10.4 -11.5 28.25 19 27 65 276 000 102 96 89 -11-10-10 000 75 15 03 -9.8 -11.0 28.22 22 30 70 281 015 99 90 95 -10 -9-10 000 76 15 04 -9.5 -10.5 28.21 18 27 77 288 009 102 90112 -10 -9-10 000 77 15 05 -9.7 -11.3 28.21 17 28 71 282 008 95 81 93 -9 -9 -9 000 78 15 06 -10.6 -11.8 28.20 16 27 64 275 006 100 78 79 -9 -8 -8 000 79 15 07 -10.9 -11.5 28.21 16 27 59 270 005 107 58 82 -7 -7 -9 000 80 15 08 -11.6 -11.9 28.23 14 22 50 261 004 111 70 62 -9 -8 -9 000 81 15 09 -12.8 -13.1 28.24 11 23 52 263 003 112 69 63 -7 -8 -9 000 82 15 10 -12.3 -12.6 28.24 15 27 61 272 008 111 58 55 -6 -7 -8 000 83 15 11 -12.2 -13.3 28.25 16 28 64 275 009 102 55 62 -6 -7 -8 000 84 15 12 -12.5 -13.8 28.27 15 27 67 278 005 102 46 60 -5 -6 -7 000 85 15 13 -12.6 -14.2 28.28 16 28 60 271 009 99 52 65 -5 -6 -7 000 86 15 14 -12.3 -14.4 28.30 16 27 56 267 011 94 54 57 -5 -6 -8 000 87 15 15 -12.0 -14.6 28.32 13 23 54 265 014 88 60 56 -6 -6 -8 000 88 15 16 -11.6 -14.8 28.33 12 21 58 269 015 82 52 54 -5 -6 -7 000 89 15 17 -11.4 -14.5 28.34 12 18 65 276 008 83 47 45 -5 -6 -7 000 90 15 18 -11.3 -14.2 28.36 12 18 74 285 004 85 45 45 -5 -6 -7 000 91 15 19 -10.3 -13.7 28.37 12 21 81 292 002 79 43 47 -5 -6 -7 000 92 15 20 -10.1 -13.3 28.38 14 25 73 284 010 82 40 49 -5 -5 -6 000 93 15 21 -9.6 -12.9 28.39 15 25 70 281 014 80 40 47 -5 -5 -6 000 94 15 22 -9.1 -12.3 28.41 20 30 67 278 030 80 37 57 -5 -5 -6 000 95 15 23 -8.9 -11.7 28.43 18 28 67 278 025 84 46 48 -5 -5 -6 000 96 16 00 -8.4 -10.9 28.46 17 26 68 279 012 86 53 52 -6 -5 -6 000 97 16 01 -7.8 -10.3 28.48 16 26 68 279 011 86 51 47 -6 -6 -7 000 98 16 02 -7.2 -9.6 28.50 17 27 65 276 020 86 40 38 -6 -5 -6 000 99 16 03 -7.2 -9.6 28.52 14 27 68 279 012 86 39 38 -4 -4 -6 000 100 16 04 -6.7 -8.6 28.52 15 25 74 285 014 90 34 53 -3 -4 -5 000 101 16 05 -6.3 -7.8 28.52 17 29 71 282 015 93 52 51 -3 -4 -5 000 102 16 06 -6.6 -7.9 28.54 15 27 66 277 026 95 36 43 -3 -3 -4 000 103 16 07 -7.2 -8.0 28.54 16 29 78 289 017 99 36 47 -3 -3 -4 000 110 16 14 -10.2 -13.3 28.56 20 31 70 281 011 82 34 35 -7 -5 -5 000 111 16 15 -10.2 -13.3 28.55 19 30 71 282 001 83 35 34 -7 -6 -6 000 112 16 16 -10.2 -13.1 28.54 20 32 77 288 001 85 42 40 -9 -7 -8 000 113 16 17 -9.9 -12.8 28.53 21 34 77 288 002 84 51 51 -9 -9 -8 000 114 16 18 -9.4 -12.2 28.53 21 35 77 288 006 84 57 63 -9 -9 -9 000 115 16 19 -8.9 -11.7 28.52 21 34 75 286 005 84 62 41 -9 -9-10 000 116 16 20 -8.4 -11.3 28.51 22 35 78 289 004 83 64 38 -9 -9 -9 000 117 16 21 -8.0 -10.9 28.50 24 35 83 294 000 83 67 39 -8 -9 -9 000 118 16 22 -7.8 -10.5 28.50 24 34 86 297 000 84 68 42 -8 -9 -9 000 119 16 23 -7.5 -10.1 28.49 22 33 86 297 000 85 70 44 -8 -9 -9 000 120 17 00 -7.2 -9.7 28.49 21 32 85 296 001 85 72 47 -8 -8 -9 000 * 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.