USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-10-14/00 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 14 00 -22.8 -26.6 28.46 4 4 57 268 000 83 73 62 -18-15-14 000 1 14 01 -23.3 -25.9 28.46 7 9 34 245 -001 98 72 63 -17-15-14 000 2 14 02 -24.4 -27.0 28.45 8 12 35 246 -001 99 70 64 -17-15-14 000 3 14 03 -24.8 -27.4 28.45 10 15 31 242 000 101 68 64 -17-14-13 000 4 14 04 -25.1 -29.2 28.46 11 16 35 246 000 83 67 68 -17-14-13 000 5 14 05 -25.2 -30.7 28.46 11 17 37 248 001 71 57 69 -16-13-13 000 6 14 06 -25.4 -31.1 28.49 12 18 41 252 001 68 50 54 -16-13-12 000 7 14 07 -25.0 -30.9 28.50 13 20 40 251 -001 67 50 41 -16-13-12 000 8 14 08 -24.6 -30.2 28.48 14 21 39 250 -007 69 39 27 -15-13-12 000 9 14 09 -23.9 -29.4 28.48 14 22 38 250 -007 69 34 24 -15-13-13 000 10 14 10 -22.5 -28.0 28.50 14 25 34 245 -007 69 43 25 -15-14-13 000 11 14 11 -21.5 -25.6 28.53 14 24 33 244 -007 81 49 15 -15-14-13 000 12 14 12 -21.1 -22.4 28.53 14 23 31 242 -003 112 33 18 -15-14-13 000 13 14 13 -20.9 -21.3 28.55 15 25 31 242 -001 121 32 17 -14-13-13 000 14 14 14 -19.3 -19.7 28.57 15 28 27 238 000 120 32 25 -14-13-12 000 15 14 15 -18.9 -19.3 28.61 16 31 22 233 007 119 56 38 -13-14-13 000 16 14 16 -18.7 -19.1 28.63 14 25 23 234 005 119 73 56 -13-13-13 000 17 14 17 -18.5 -18.9 28.64 14 21 24 235 008 119 96 75 -12-12-12 000 18 14 18 -16.4 -16.9 28.65 14 24 31 242 003 115 60 87 -12-12-11 000 19 14 19 -15.1 -15.4 28.65 16 26 30 241 001 115 42 78 -11-11-11 000 20 14 20 -14.6 -15.0 28.68 17 25 22 233 005 115 42 71 -12-11-11 000 21 14 21 -14.5 -14.8 28.70 15 23 24 235 -002 115 59 63 -12-11-11 000 22 14 22 -14.7 -15.0 28.72 13 19 25 236 -002 115 66 61 -11-11-11 000 23 14 23 -15.0 -15.3 28.74 10 16 23 234 -007 115 74 59 -11-11-11 000 24 15 00 -15.9 -16.3 28.75 9 13 18 229 -004 116 76 56 -11-10-11 000 25 15 01 -15.8 -16.2 28.76 9 15 12 223 000 116 74 53 -10-10-11 000 26 15 02 -15.7 -16.2 28.77 9 14 4 215 -002 115 72 55 -10-10-11 000 27 15 03 -17.0 -17.5 28.79 6 11 15 226 -002 116 75 58 -10-10-11 000 28 15 04 -16.1 -16.4 28.79 5 8 342 193 002 113 75 63 -10-11-11 000 29 15 05 -16.3 -16.7 28.78 6 8 315 166 002 110 73 66 -10-10-11 000 30 15 06 -16.5 -16.6 28.81 6 8 296 147 000 114 72 67 -10-10-11 000 31 15 07 -16.1 -16.1 28.82 4 7 268 119 000 115 77 69 -10-11-12 000 32 15 08 -17.9 -17.9 28.82 4 10 221 72 001 118 82 72 -12-12-12 000 33 15 09 -18.5 -18.5 28.81 3 8 218 69 000 118 72 69 -11-11-11 000 34 15 10 -18.6 -18.6 28.82 3 7 241 92 000 118 74 70 -10-11-11 000 35 15 11 -18.1 -18.1 28.83 4 8 239 90 000 118 75 69 -10-11-11 000 36 15 12 -17.4 -17.6 28.83 5 9 225 76 000 114 77 70 -10-11-12 000 37 15 13 -18.1 -18.1 28.84 5 11 230 81 -001 117 75 70 -11-11-11 000 38 15 14 -19.3 -19.4 28.84 5 10 233 84 000 118 65 69 -11-11-12 000 39 15 15 -19.5 -19.7 28.84 6 10 244 95 002 118 61 71 -11-11-12 000 40 15 16 -18.9 -20.7 28.84 7 11 254 105 001 99 63 86 -11-11-11 000 41 15 17 -19.4 -21.8 28.84 8 13 246 97 000 94 62 91 -11-11-11 000 42 15 18 -19.6 -24.0 28.84 7 12 243 94 001 73 46 98 -12-11-12 000 43 15 19 -19.3 -25.1 28.84 7 12 244 95 001 59 44 91 -12-11-12 000 44 15 20 -19.0 -22.5 28.84 7 12 240 91 000 82 43 90 -12-11-12 000 45 15 21 -18.6 -21.7 28.83 7 12 242 93 000 86 46 96 -12-11-12 000 46 15 22 -18.3 -22.3 28.83 8 12 247 98 001 78 42103 -12-11-12 000 47 15 23 -18.4 -23.5 28.83 7 12 251 102 000 66 44 99 -12-11-12 000 48 16 00 -18.7 -24.2 28.83 7 12 251 102 000 61 40 95 -12-11-12 000 49 16 01 -18.9 -24.7 28.82 6 11 246 97 001 59 48 87 -12-11-12 000 50 16 02 -19.1 -25.2 28.81 6 10 256 107 001 59 69 70 -12-11-12 000 51 16 03 -19.1 -25.7 28.80 6 10 261 112 002 56 84 53 -12-11-12 000 52 16 04 -19.7 -25.3 28.78 7 11 257 108 001 63 64 62 -12-11-12 000 53 16 05 -20.2 -22.2 28.77 5 9 276 127 -002 99 49 67 -12-11-12 000 54 16 06 -20.0 -20.1 28.76 5 7 275 126 001 119 55 70 -12-11-12 000 55 16 07 -19.0 -20.6 28.74 4 6 268 119 003 102 54 68 -12-12-12 000 56 16 08 -19.0 -22.4 28.72 4 6 266 117 000 86 57 58 -12-12-12 000 57 16 09 -18.9 -23.3 28.71 3 5 269 120 000 77 53 52 -12-12-12 000 58 16 10 -18.9 -23.8 28.70 2 4 267 118 000 73 48 49 -12-12-12 000 59 16 11 -19.1 -24.0 28.70 2 4 268 119 001 73 46 50 -12-12-12 000 60 16 12 -19.1 -24.2 28.69 1 3 267 118 000 71 43 51 -12-12-12 000 61 16 13 -19.1 -24.4 28.67 1 2 287 138 001 70 42 50 -12-12-12 000 62 16 14 -19.1 -24.4 28.65 0 2 282 133 000 70 42 49 -13-12-13 000 63 16 15 -19.2 -24.4 28.63 0 2 260 111 001 71 43 47 -12-12-12 000 64 16 16 -19.2 -24.3 28.62 0 3 133 344 000 72 51 48 -12-12-12 000 65 16 17 -19.2 -24.3 28.60 2 5 132 344 000 72 56 46 -13-12-12 000 66 16 18 -19.4 -24.0 28.59 4 6 99 310 000 77 59 45 -12-12-12 000 67 16 19 -20.0 -24.0 28.58 6 7 96 307 000 78 59 44 -12-12-12 000 68 16 20 -19.6 -23.5 28.57 7 7 86 297 000 78 56 42 -12-12-12 000 69 16 21 -18.4 -20.6 28.55 6 7 76 287 002 96 40 41 -12-12-12 000 70 16 22 -17.8 -19.5 28.54 7 9 78 289 000 103 44 32 -12-11-12 000 71 16 23 -18.0 -19.9 28.53 7 11 76 287 001 100 46 17 -11-12-12 000 72 17 00 -18.5 -22.4 28.51 7 11 70 281 001 78 38 47 -11-11-11 000 73 17 01 -18.7 -22.3 28.50 8 11 66 277 000 80 34 36 -11-11-11 000 74 17 02 -19.3 -22.4 28.48 9 14 65 276 000 87 30 16 -11-10-10 000 75 17 03 -19.8 -23.0 28.47 10 17 64 275 -003 87 24 30 -10-10 -9 000 76 17 04 -18.8 -22.7 28.45 10 17 61 272 -002 79 30 55 -9 -8 -9 000 77 17 05 -17.8 -21.0 28.45 12 20 70 281 -004 86 40 56 -8 -8 -9 000 78 17 06 -18.3 -21.5 28.43 13 21 73 284 000 87 40 43 -8 -8 -8 000 79 17 07 -18.1 -20.5 28.42 13 23 75 286 000 95 31 42 -8 -8 -8 000 80 17 08 -17.9 -19.4 28.40 13 23 73 284 000 104 29 39 -7 -6 -7 000 81 17 09 -17.6 -18.9 28.38 14 23 73 284 002 107 29 34 -8 -6 -7 000 82 17 10 -17.6 -19.4 28.37 16 26 79 290 001 101 32 37 -8 -7 -7 000 83 17 11 -18.0 -19.9 28.35 13 24 80 291 000 101 34 40 -8 -8 -8 000 84 17 12 -18.7 -20.3 28.34 13 25 79 290 000 104 35 37 -9 -8 -8 000 85 17 13 -18.2 -20.2 28.33 15 28 78 289 -003 100 33 32 -8 -7 -7 000 86 17 14 -17.7 -19.7 28.33 15 28 73 284 000 99 33 32 -8 -8 -7 000 87 17 15 -17.2 -19.4 28.32 16 29 70 281 003 96 28 36 -7 -6 -7 000 88 17 16 -16.5 -19.0 28.31 13 26 74 285 003 93 29 32 -6 -6 -7 000 89 17 17 -15.5 -18.3 28.31 16 27 78 289 003 90 31 33 -5 -5 -6 000 90 17 18 -15.4 -17.8 28.30 16 28 77 288 006 92 33 33 -5 -5 -6 000 91 17 19 -14.7 -17.7 28.30 18 27 77 288 008 87 33 31 -6 -5 -6 000 92 17 20 -14.5 -17.5 28.30 19 30 75 286 000 86 30 27 -6 -5 -6 000 93 17 21 -14.1 -17.5 28.30 18 27 77 288 004 83 29 28 -6 -5 -6 000 94 17 22 -13.8 -17.3 28.31 19 31 79 290 013 82 28 28 -5 -5 -6 000 95 17 23 -13.9 -17.4 28.32 17 27 79 290 003 82 31 27 -5 -5 -6 000 96 18 00 -13.9 -17.5 28.33 16 30 73 284 004 81 28 22 -5 -5 -6 000 97 18 01 -13.0 -17.4 28.32 15 27 74 285 014 73 26 27 -4 -5 -6 000 98 18 02 -13.1 -17.6 28.31 14 25 75 286 007 72 31 24 -4 -5 -6 000 99 18 03 -13.8 -17.7 28.31 13 22 78 289 005 78 29 29 -4 -5 -6 000 100 18 04 -14.1 -17.4 28.30 13 23 74 285 000 83 29 33 -5 -5 -6 000 101 18 05 -14.2 -16.8 28.30 14 25 75 286 -002 90 32 35 -5 -5 -6 000 102 18 06 -14.5 -16.4 28.30 14 26 75 286 000 97 28 43 -5 -5 -6 000 103 18 07 -15.2 -16.5 28.30 16 27 72 283 001 103 25 31 -6 -6 -7 000 104 18 08 -16.1 -16.8 28.31 15 26 67 278 008 112 33 32 -7 -7 -8 000 105 18 09 -16.5 -17.4 28.32 14 24 66 277 004 109 30 39 -7 -8 -9 000 106 18 10 -16.5 -18.1 28.32 14 24 68 279 007 102 31 48 -7 -8 -9 000 107 18 11 -17.1 -18.3 28.33 14 24 70 281 006 107 40 38 -8 -9-10 000 108 18 12 -18.0 -19.2 28.32 15 27 75 286 004 108 36 37 -8 -8-10 000 109 18 13 -17.2 -18.7 28.32 15 27 81 292 002 104 33 41 -7 -8 -9 000 110 18 14 -17.0 -17.3 28.31 15 27 82 293 003 117 43 47 -8 -8 -8 000 111 18 15 -16.3 -18.0 28.30 14 24 89 300 001 100 43 46 -7 -7 -8 000 112 18 16 -16.8 -19.2 28.28 14 24 95 306 000 94 44 49 -7 -7 -8 000 113 18 17 -16.9 -19.4 28.26 15 25 96 307 000 93 46 51 -9 -8 -9 000 114 18 18 -16.5 -19.6 28.24 16 26 97 308 -001 87 47 55 -10 -9 -9 000 115 18 19 -15.3 -18.6 28.21 16 26 101 312 -003 84 48 60 -11-10-10 000 116 18 20 -15.6 -18.5 28.19 16 26 98 309 -003 88 52 59 -12-11-11 000 117 18 21 -15.0 -18.2 28.16 17 28 93 304 -006 85 51 56 -12-11-11 000 118 18 22 -15.0 -18.3 28.14 17 28 88 299 -004 85 48 53 -13-11-10 000 119 18 23 -15.0 -18.3 28.12 19 30 88 299 000 84 42 47 -13-10 -9 000 120 19 00 -14.8 -18.2 28.11 21 32 88 299 000 84 42 47 -12-10 -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.