USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-06-12/12 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 12 12 -36.2 -39.9 28.70 5 8 264 115 000 100100 98 -30-29-28 000 1 12 13 -37.2 -38.2 28.72 6 10 258 109 000 128100 99 -30-28-28 000 2 12 14 -37.5 -38.6 28.72 6 11 265 116 000 125102 97 -29-28-28 000 3 12 15 -37.0 -37.9 28.74 6 10 261 112 000 125103 99 -29-28-28 000 4 12 16 -36.1 -36.9 28.76 5 10 258 109 000 127105102 -29-28-28 000 5 12 17 -36.2 -37.0 28.76 5 10 254 105 001 127107103 -29-28-28 000 6 12 18 -36.9 -37.9 28.77 5 10 250 101 000 125108104 -29-28-28 000 7 12 19 -36.3 -37.2 28.80 3 8 235 86 000 124106104 -29-28-28 000 8 12 20 -36.0 -36.7 28.78 1 5 197 48 000 124106108 -29-28-28 000 9 12 21 -35.9 -36.5 28.77 1 4 156 7 000 124105110 -29-28-28 000 10 12 22 -36.0 -36.6 28.79 2 3 120 331 000 124104102 -29-28-28 000 11 12 23 -35.8 -36.5 28.80 2 2 78 289 000 124103 96 -28-28-28 000 12 13 00 -36.3 -37.1 28.79 3 3 61 272 000 124104100 -28-28-28 000 13 13 01 -35.7 -36.4 28.79 2 4 62 273 000 124105106 -28-28-28 000 14 13 02 -35.2 -35.8 28.81 2 5 86 297 000 122104104 -29-28-28 000 15 13 03 -35.2 -35.7 28.81 3 6 109 320 000 124105104 -28-28-28 000 16 13 04 -35.5 -36.3 28.82 4 6 107 318 000 124103104 -28-28-28 000 17 13 05 -35.7 -36.5 28.81 5 7 105 316 000 124103103 -28-28-28 000 18 13 06 -35.8 -36.6 28.81 6 7 107 318 000 124103103 -28-27-28 000 19 13 07 -36.2 -37.0 28.81 6 8 109 320 000 125100 98 -27-27-28 000 20 13 08 -36.7 -37.4 28.80 7 9 107 318 000 126100 92 -27-27-28 000 21 13 09 -36.7 -37.2 28.80 7 10 104 315 000 131 98 91 -27-27-28 000 22 13 10 -36.9 -37.4 28.81 7 10 104 315 000 130 97 87 -27-27-28 000 23 13 11 -37.0 -37.6 28.81 8 11 104 315 000 130 95 82 -27-27-28 000 24 13 12 -36.9 -37.5 28.81 8 11 102 313 000 130 93 77 -27-27-27 000 25 13 13 -36.8 -37.4 28.80 8 11 103 314 000 129 93 75 -27-27-27 000 26 13 14 -36.7 -37.4 28.80 8 11 106 317 000 128 96 66 -27-27-27 000 27 13 15 -36.6 -37.5 28.81 8 11 107 318 000 126 96 61 -27-27-27 000 28 13 16 -36.5 -37.5 28.80 8 12 107 318 000 126 96 55 -26-27-27 000 29 13 17 -36.5 -37.4 28.79 8 12 107 318 000 127 93 47 -26-27-27 000 30 13 18 -36.3 -37.3 28.79 9 13 109 320 000 126 90 42 -26-26-27 000 31 13 19 -36.4 -37.4 28.80 9 14 109 320 000 126 89 39 -26-26-27 000 32 13 20 -36.2 -37.3 28.79 10 14 107 318 000 127 88 33 -26-26-27 000 33 13 21 -35.9 -36.9 28.78 10 14 104 315 000 128 84 28 -26-26-26 000 34 13 22 -35.7 -36.6 28.77 10 14 103 314 000 129 81 25 -25-26-26 000 35 13 23 -35.5 -36.3 28.77 10 14 103 314 000 130 79 24 -25-26-26 000 36 14 00 -35.2 -35.9 28.76 10 15 103 314 000 133 76 23 -25-25-26 000 37 14 01 -34.9 -35.4 28.75 10 16 104 315 000 136 73 23 -25-25-26 000 38 14 02 -34.6 -35.1 28.74 11 17 104 315 000 137 72 23 -25-25-25 000 39 14 03 -34.3 -34.8 28.72 11 18 104 315 000 137 70 26 -25-25-25 000 40 14 04 -34.3 -34.8 28.71 11 19 105 316 000 136 68 27 -25-25-25 000 41 14 05 -34.1 -34.8 28.70 11 19 104 315 000 134 67 30 -24-24-24 000 42 14 06 -33.8 -34.5 28.68 11 19 103 314 000 134 61 35 -24-24-24 000 43 14 07 -33.1 -33.8 28.67 11 19 102 313 000 133 55 38 -24-23-23 000 44 14 08 -32.8 -33.6 28.65 11 19 103 314 000 131 46 39 -23-23-23 000 45 14 09 -32.5 -33.4 28.62 11 19 104 315 001 129 41 38 -23-22-22 000 46 14 10 -32.2 -33.2 28.60 11 19 105 316 000 127 34 48 -22-21-21 000 47 14 11 -31.8 -33.0 28.59 11 19 104 315 000 124 28 55 -21-21-21 000 48 14 12 -31.5 -32.6 28.58 11 19 102 313 000 124 25 51 -21-20-20 000 49 14 13 -31.1 -32.2 28.55 11 19 97 308 001 124 24 45 -20-20-20 000 50 14 14 -30.5 -32.1 28.54 11 17 91 302 000 115 28 44 -19-19-19 000 51 14 15 -29.5 -32.2 28.53 11 16 84 295 000 100 32 60 -19-19-18 000 52 14 16 -28.8 -32.2 28.52 10 14 78 289 000 89 39 67 -18-18-18 000 53 14 17 -27.5 -31.7 28.50 10 13 71 282 001 79 36 73 -17-17-17 000 54 14 18 -25.4 -30.1 28.49 9 13 61 272 000 75 35 85 -17-17-17 000 55 14 19 -23.9 -28.6 28.48 9 12 56 267 001 74 45 98 -17-17-17 000 56 14 20 -23.6 -28.4 28.47 9 12 51 262 000 72 61 96 -16-17-17 000 57 14 21 -23.3 -29.0 28.47 9 13 41 252 001 65 37102 -17-17-18 000 58 14 22 -23.4 -29.1 28.47 9 12 36 247 001 64 63104 -17-17-18 000 59 14 23 -23.7 -28.0 28.48 8 12 27 238 000 78 70103 -17-17-18 000 60 15 00 -24.0 -26.0 28.48 8 12 15 226 000 106 74101 -17-18-18 000 61 15 01 -24.6 -26.4 28.50 9 17 357 208 000 107116 97 -18-18-19 000 62 15 02 -24.5 -25.0 28.51 11 22 339 190 004 125103109 -18-19-19 000 63 15 03 -24.4 -24.9 28.52 10 22 323 174 000 124110103 -17-18-20 001 64 15 04 -24.5 -25.0 28.54 10 25 340 191 000 125 90 96 -18-19-20 002 65 15 05 -24.6 -25.1 28.55 11 27 1 212 -007 126 91 90 -19-20-20 000 66 15 06 -25.0 -25.5 28.55 12 27 5 216 -005 126106 82 -20-20-20 000 67 15 07 -23.7 -24.1 28.56 17 28 3 214 -008 125103 86 -19-19-20 000 68 15 08 -25.1 -25.6 28.58 15 24 12 223 -009 127 84 81 -20-19-19 000 69 15 09 -25.5 -26.0 28.58 15 23 10 221 -004 127 88 74 -20-18-18 000 70 15 10 -25.5 -26.0 28.60 14 25 4 215 -001 128104 71 -20-20-19 000 71 15 11 -25.3 -25.8 28.61 13 23 1 212 -004 127 90 67 -21-20-19 000 72 15 12 -25.7 -26.2 28.62 12 23 6 217 -005 128 97 71 -20-20-19 000 73 15 13 -26.7 -27.2 28.62 12 23 15 226 -003 129103 69 -20-20-19 000 74 15 14 -26.7 -27.3 28.63 12 21 26 237 -008 129 94 69 -20-20-20 000 75 15 15 -25.7 -26.2 28.64 12 21 22 233 -003 128104 79 -20-20-19 000 76 15 16 -26.0 -26.5 28.64 11 21 29 240 000 128 91 82 -20-19-19 000 77 15 17 -25.3 -25.8 28.63 13 22 32 243 000 127 94 74 -20-20-19 000 78 15 18 -25.6 -26.1 28.62 12 22 45 256 002 127 88 60 -19-20-20 000 79 15 19 -25.7 -26.3 28.61 11 20 54 265 -002 127 97 66 -19-20-19 000 80 15 20 -26.0 -26.6 28.61 10 16 57 268 002 128 93 67 -20-19-19 000 81 15 21 -25.0 -25.6 28.60 9 15 62 273 004 126 81 67 -20-19-19 000 82 15 22 -24.8 -25.4 28.59 9 15 72 283 005 126 79 78 -19-18-18 000 83 15 23 -24.4 -25.0 28.57 9 15 86 297 004 125 78 78 -18-17-18 000 84 16 00 -23.5 -24.0 28.55 9 15 89 300 006 124 73 91 -18-17-17 000 85 16 01 -23.0 -23.6 28.54 10 16 89 300 003 122 84 83 -17-17-18 000 86 16 02 -22.0 -23.2 28.52 9 16 86 297 -001 114 77 71 -16-17-18 000 87 16 03 -21.9 -23.9 28.50 9 15 86 297 -001 103 78 78 -16-17-17 000 88 16 04 -21.6 -23.9 28.48 8 14 95 306 -001 99 69 74 -16-16-16 000 89 16 05 -21.5 -23.8 28.46 9 15 97 308 000 98 67 73 -15-16-16 000 90 16 06 -20.2 -22.8 28.44 9 18 104 315 002 94 68 80 -15-15-16 000 91 16 07 -20.0 -23.0 28.42 10 18 108 319 002 90 58 83 -14-15-16 000 92 16 08 -19.6 -23.3 28.40 10 19 106 317 001 84 47 84 -14-14-15 000 93 16 09 -19.5 -23.8 28.39 9 18 99 310 000 77 44 92 -14-14-15 000 94 16 10 -19.1 -23.8 28.38 9 18 91 302 000 73 55 97 -14-14-15 000 95 16 11 -19.1 -23.8 28.38 9 16 75 286 -001 72 86100 -14-14-15 000 96 16 12 -18.6 -22.0 28.37 8 13 67 278 -001 85 95100 -14-14-15 004 97 16 13 -18.8 -21.4 28.36 7 10 62 273 000 93 97 99 -14-14-14 004 98 16 14 -18.6 -20.5 28.36 7 11 33 244 003 102102104 -15-15-15 006 99 16 15 -19.7 -21.1 28.36 9 13 20 231 001 109101106 -15-15-16 007 100 16 16 -20.3 -21.4 28.36 7 8 30 241 -003 113 94113 -14-15-16 004 101 16 17 -20.4 -20.9 28.37 9 15 9 220 000 120103 94 -15-15-16 002 102 16 18 -21.5 -22.0 28.36 10 15 353 204 002 122 94 85 -15-15-16 000 103 16 19 -22.6 -23.3 28.37 7 14 3 214 001 122 97 81 -16-16-17 000 104 16 20 -21.0 -21.6 28.37 7 14 46 257 003 122114 87 -17-16-16 000 105 16 21 -20.2 -20.7 28.37 10 21 40 251 001 121 96 86 -15-15-15 000 106 16 22 -20.4 -21.0 28.36 9 16 35 246 002 121 93 88 -14-15-15 000 107 16 23 -20.8 -21.3 28.35 10 16 35 246 000 121100 86 -14-15-15 000 108 17 00 -21.0 -21.5 28.34 10 15 44 255 -003 121 88 87 -14-14-14 000 109 17 01 -21.2 -21.7 28.33 10 14 54 265 001 121 83 93 -14-14-14 000 110 17 02 -21.3 -21.8 28.31 9 13 63 274 002 121 83 97 -14-14-14 000 111 17 03 -21.3 -21.8 28.30 9 13 75 286 002 121 85 97 -13-14-14 000 112 17 04 -21.2 -21.7 28.28 9 14 83 294 001 121 82 75 -13-14-15 000 113 17 05 -21.2 -21.7 28.25 9 15 99 310 005 121 87 76 -14-14-14 000 114 17 06 -20.9 -21.4 28.22 10 19 107 318 000 121 80 73 -13-14-14 000 115 17 07 -20.4 -20.9 28.20 11 20 113 324 001 120 73 59 -13-14-14 000 116 17 08 -21.0 -21.5 28.17 11 22 115 326 -002 120 56 49 -13-13-14 000 117 17 09 -21.6 -22.9 28.15 11 22 112 323 -005 110 72 47 -14-14-14 000 118 17 10 -21.3 -22.9 28.13 12 24 120 331 007 107 77 48 -14-14-13 000 119 17 11 -20.9 -21.3 28.10 11 23 119 330 000 121 54 54 -13-13-13 000 120 17 12 -21.2 -21.8 28.08 9 19 101 312 -005 121 47 51 -12-12-13 000 * 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.