USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-10-15/12 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 15 12 -22.2 -33.6 28.81 2 2 343 195 000 26 24 39 -12-12-12 000 1 15 13 -19.3 -29.5 28.81 2 3 279 130 001 43 27 43 -13-12-12 000 2 15 14 -19.9 -29.4 28.82 3 6 240 91 000 47 27 45 -13-12-12 000 3 15 15 -20.0 -29.3 28.82 2 6 159 10 000 48 27 47 -13-12-12 000 4 15 16 -20.5 -28.1 28.83 4 7 117 328 001 57 26 51 -13-12-12 000 5 15 17 -19.8 -25.8 28.81 4 5 91 302 000 67 27 57 -12-13-12 000 6 15 18 -18.6 -24.8 28.81 2 2 59 270 001 65 25 62 -12-12-12 000 7 15 19 -18.4 -25.4 28.82 2 4 335 186 000 60 24 63 -12-11-11 000 8 15 20 -17.9 -25.6 28.77 2 8 214 65 000 56 27 64 -13-12-11 000 9 15 21 -19.7 -22.4 28.79 5 10 162 14 -001 93 27 63 -13-11-11 000 10 15 22 -20.4 -21.0 28.78 4 8 145 356 000 116 34 65 -12-11-11 000 11 15 23 -20.0 -20.2 28.77 4 7 137 348 000 120 47 68 -13-12-12 000 12 16 00 -20.0 -20.2 28.75 3 7 147 358 000 120 61 69 -13-12-12 000 13 16 01 -19.8 -20.1 28.74 3 7 160 11 000 120 74 68 -12-12-12 000 14 16 02 -20.1 -20.3 28.74 2 5 154 5 000 121 86 66 -12-12-12 000 15 16 03 -20.5 -20.9 28.74 2 5 135 346 000 121 90 55 -12-12-12 000 16 16 04 -21.2 -21.5 28.71 3 5 155 6 -002 122 88 40 -13-12-12 000 17 16 05 -21.8 -22.0 28.69 3 6 153 4 002 123 74 39 -13-12-12 000 18 16 06 -22.0 -22.1 28.68 4 9 134 345 000 123 48 38 -13-12-12 000 19 16 07 -22.6 -22.7 28.66 5 9 120 331 000 122 32 37 -13-12-12 000 20 16 08 -22.6 -22.7 28.64 5 8 108 319 000 122 33 37 -13-11-11 000 21 16 09 -21.9 -21.9 28.63 5 7 104 315 000 122 35 38 -12-12-12 000 22 16 10 -22.1 -22.7 28.62 6 8 103 314 001 113 39 42 -13-12-12 000 23 16 11 -23.5 -23.7 28.59 8 9 84 295 000 122 41 44 -14-12-11 000 24 16 12 -24.1 -24.6 28.57 8 9 60 271 -001 124 42 45 -13-11-11 000 25 16 13 -23.7 -24.2 28.57 8 10 55 266 000 123 44 47 -12-11-11 000 26 16 14 -23.0 -23.5 28.56 7 8 52 263 -002 123 48 50 -12-11-11 000 27 16 15 -21.6 -21.8 28.55 5 6 56 267 000 121 44 56 -12-11-11 000 28 16 16 -20.1 -20.2 28.53 4 6 68 279 002 120 56 67 -13-12-12 000 29 16 17 -20.6 -21.4 28.51 4 5 56 267 000 113 61 71 -13-12-12 000 30 16 18 -20.3 -23.8 28.48 4 6 87 298 000 86 55 63 -13-12-12 000 31 16 19 -20.9 -26.3 28.47 6 7 88 299 001 66 48 56 -13-12-12 000 32 16 20 -21.2 -26.3 28.46 8 11 65 276 -001 68 38 53 -13-11-11 000 33 16 21 -20.9 -25.4 28.45 8 13 62 273 000 75 36 49 -12-11-11 000 34 16 22 -19.9 -23.8 28.44 9 13 58 269 000 80 37 28 -12-11-11 000 35 16 23 -20.1 -24.0 28.43 8 11 54 265 000 80 29 47 -12-10-10 000 36 17 00 -20.3 -25.0 28.42 8 13 58 269 -001 73 38 48 -12-10-10 000 37 17 01 -20.9 -23.7 28.40 8 15 63 274 -002 94 40 50 -11 -9 -9 000 38 17 02 -20.7 -22.1 28.39 9 15 61 272 -004 109 40 43 -11 -9-10 000 39 17 03 -21.0 -23.1 28.37 10 17 59 270 -007 101 32 40 -11 -9 -9 000 40 17 04 -21.4 -22.6 28.36 11 18 55 266 -008 113 24 42 -11 -9 -8 000 41 17 05 -20.9 -22.0 28.35 12 20 54 265 -010 114 23 41 -11 -8 -8 000 42 17 06 -20.6 -22.0 28.35 12 20 58 269 -009 108 24 41 -10 -8 -8 000 43 17 07 -20.2 -23.3 28.35 12 21 67 278 -006 89 32 48 -10 -9 -8 000 44 17 08 -19.4 -23.0 28.33 11 17 60 272 -005 83 39 47 -9 -8 -8 000 45 17 09 -19.5 -20.1 28.31 12 21 72 283 000 117 36 42 -9 -8 -8 000 46 17 10 -19.9 -20.6 28.30 12 26 80 291 001 115 34 42 -8 -8 -8 000 47 17 11 -18.5 -20.4 28.30 11 19 74 285 001 100 39 41 -9 -8 -9 000 48 17 12 -20.4 -20.8 28.29 10 22 77 288 002 120 41 47 -9 -8 -9 000 49 17 13 -18.9 -20.9 28.27 12 25 84 295 002 99 42 51 -9 -9 -9 000 50 17 14 -18.6 -20.9 28.26 12 26 82 293 -001 96 40 51 -9 -9 -9 000 51 17 15 -18.0 -20.8 28.25 12 25 77 288 000 91 40 52 -9 -9 -9 000 52 17 16 -17.4 -20.4 28.24 12 25 74 285 000 89 42 56 -9 -9-10 000 53 17 17 -18.0 -20.1 28.24 12 24 74 285 004 99 42 58 -9 -9-10 000 54 17 18 -17.6 -19.9 28.23 12 23 75 286 001 95 42 50 -9 -9-10 000 55 17 19 -17.2 -20.1 28.22 11 21 67 278 -002 89 43 45 -10 -9-10 000 56 17 20 -18.7 -20.3 28.23 14 21 62 273 -005 106 42 49 -10 -9-10 000 57 17 21 -18.4 -21.0 28.24 13 23 61 272 003 95 41 45 -10 -9 -9 000 58 17 22 -17.4 -20.6 28.26 15 24 59 270 002 88 37 52 -9 -8 -8 000 59 17 23 -17.0 -20.4 28.27 14 23 64 275 001 85 37 49 -9 -8 -9 000 60 18 00 -16.8 -20.2 28.29 15 24 65 276 004 85 44 51 -9 -8 -9 000 61 18 01 -16.1 -19.2 28.30 14 24 67 278 010 87 38 46 -9 -8 -8 000 62 18 02 -15.6 -17.9 28.31 16 27 69 280 007 95 34 39 -8 -6 -7 000 63 18 03 -15.7 -17.2 28.31 15 24 68 279 007 103 35 32 -8 -6 -6 000 64 18 04 -15.4 -17.3 28.32 17 28 71 282 011 98 30 29 -7 -6 -7 000 65 18 05 -15.2 -17.1 28.33 17 28 72 283 012 98 33 36 -7 -6 -7 000 66 18 06 -14.9 -16.4 28.34 18 28 70 281 019 102 34 36 -8 -7 -7 000 67 18 07 -15.2 -16.4 28.35 19 30 71 282 018 105 34 33 -7 -6 -7 000 68 18 08 -15.4 -16.6 28.37 19 31 70 281 017 105 37 35 -8 -6 -7 000 69 18 09 -15.3 -16.7 28.39 20 31 65 276 017 103 46 46 -10 -7 -8 000 70 18 10 -15.8 -18.1 28.41 19 31 64 275 021 94 62 42 -9 -8 -8 000 71 18 11 -16.7 -19.2 28.42 17 30 65 276 016 93 55 21 -9 -9 -9 000 72 18 12 -17.7 -19.6 28.42 17 28 69 280 008 101 34 24 -8 -9 -9 000 73 18 13 -18.3 -19.5 28.42 16 27 71 282 002 109 33 29 -8 -8 -9 000 74 18 14 -18.1 -19.0 28.41 16 27 74 285 004 111 31 35 -8 -8 -9 000 75 18 15 -17.4 -18.7 28.40 17 28 76 287 009 107 32 39 -8 -8 -9 000 76 18 16 -17.0 -18.5 28.40 17 28 77 288 009 103 37 37 -8 -9-10 000 77 18 17 -16.5 -18.4 28.39 17 27 78 289 011 99 35 33 -8 -8 -9 000 78 18 18 -16.1 -18.1 28.39 17 26 82 293 007 97 36 42 -8 -8 -9 000 79 18 19 -15.5 -18.4 28.38 16 24 83 294 015 89 33 44 -7 -7 -8 000 80 18 20 -15.6 -18.6 28.37 13 22 83 295 002 89 42 46 -7 -7 -9 000 81 18 21 -15.7 -18.6 28.35 13 21 86 297 -001 88 44 47 -9 -8 -8 000 82 18 22 -15.3 -18.4 28.33 15 25 90 301 000 87 45 52 -9 -8 -9 000 83 18 23 -15.0 -18.3 28.31 15 23 93 304 006 85 46 54 -10 -9 -9 000 84 19 00 -15.3 -18.2 28.30 13 23 94 305 003 87 47 55 -11-10-10 000 85 19 01 -15.7 -18.4 28.29 12 24 94 305 -002 90 48 56 -12-11-10 000 86 19 02 -15.7 -18.5 28.26 13 25 97 308 000 90 44 54 -11-10-10 000 87 19 03 -15.7 -18.2 28.24 14 27 93 304 001 93 43 52 -11 -9 -9 000 88 19 04 -15.5 -17.9 28.22 15 27 88 299 000 93 43 48 -10 -9 -8 000 89 19 05 -15.4 -17.5 28.21 16 29 86 297 000 96 42 41 -10 -8 -8 000 90 19 06 -15.1 -17.2 28.20 18 30 80 291 -007 97 41 39 -9 -8 -8 000 91 19 07 -15.4 -17.3 28.18 18 30 76 287 -002 98 38 32 -9 -7 -7 000 92 19 08 -14.9 -17.5 28.18 18 30 72 283 -001 90 35 35 -9 -7 -7 000 93 19 09 -15.3 -18.1 28.18 18 27 76 287 001 89 33 37 -8 -7 -7 000 94 19 10 -16.9 -19.0 28.18 17 27 77 288 002 98 34 34 -7 -7 -7 000 95 19 11 -17.7 -19.4 28.19 16 26 76 287 002 102 36 34 -7 -7 -7 000 96 19 12 -17.7 -19.5 28.18 15 27 78 289 -002 102 34 33 -7 -7 -7 000 97 19 13 -17.9 -19.5 28.19 15 26 71 282 000 104 34 33 -6 -6 -7 000 98 19 14 -18.6 -19.4 28.20 14 25 58 269 -002 113 40 35 -7 -7 -7 000 99 19 15 -18.1 -19.2 28.22 14 24 53 264 001 110 42 44 -8 -6 -7 000 100 19 16 -19.8 -20.2 28.24 14 22 41 252 -003 121 43 44 -9 -7 -7 000 101 19 17 -19.8 -20.9 28.27 13 21 37 248 -001 113 44 36 -10 -8 -8 000 102 19 18 -19.2 -21.1 28.29 14 22 34 245 007 102 41 33 -10 -8 -8 000 103 19 19 -20.1 -21.3 28.32 15 23 31 242 009 113 46 28 -10 -8 -8 000 104 19 20 -20.7 -21.4 28.35 14 22 24 235 000 118 42 27 -10 -8 -8 000 105 19 21 -21.0 -21.8 28.40 13 21 18 229 -010 117 45 38 -11 -9 -8 000 106 19 22 -20.9 -21.8 28.45 10 18 15 226 -014 117 56 44 -13-11 -9 000 107 19 23 -20.7 -21.5 28.50 10 18 23 234 -011 117 54 51 -12-11-10 000 108 20 00 -20.5 -21.3 28.54 12 17 27 238 -013 117 49 56 -12-11-10 000 109 20 01 -20.1 -21.0 28.57 13 19 27 238 -004 116 47 54 -11-10-10 000 110 20 02 -20.2 -20.6 28.59 12 19 20 231 000 121 46 44 -11-10 -9 000 111 20 03 -20.9 -21.4 28.63 12 19 19 230 -005 122 51 34 -12-10-10 000 112 20 04 -21.6 -22.1 28.66 11 16 20 231 -002 123 45 37 -11-10-10 000 113 20 05 -23.1 -23.6 28.69 10 16 23 234 -004 125 77 41 -11-11-11 000 114 20 06 -23.8 -24.3 28.73 9 14 32 243 -006 126 86 43 -12-12-12 000 115 20 07 -23.0 -23.6 28.76 8 12 18 229 -002 124 90 49 -12-12-13 000 116 20 08 -22.1 -22.7 28.78 8 13 2 213 -002 122 96 64 -13-13-13 000 117 20 09 -21.0 -21.6 28.80 9 15 346 197 001 121 93 84 -13-13-13 000 118 20 10 -20.6 -21.2 28.82 9 18 315 166 004 120108104 -13-14-14 000 119 20 11 -20.0 -20.5 28.83 9 15 304 155 002 119115106 -14-15-15 000 120 20 12 -17.5 -18.1 28.84 7 12 282 133 -001 117116 94 -14-16-16 000 * 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.