USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-06-10/00 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 10 00 -24.3 -27.3 28.68 3 4 27 238 000 99 99 99 -23-23-22 000 1 10 01 -27.2 -28.4 28.67 6 6 23 234 000 118 98 98 -23-22-22 000 2 10 02 -28.3 -28.7 28.66 6 7 27 238 000 128 97 99 -22-22-22 000 3 10 03 -28.1 -28.2 28.66 5 6 26 237 000 129 98 99 -22-22-22 000 4 10 04 -28.1 -28.1 28.65 5 6 29 240 000 129 98 98 -22-22-22 000 5 10 05 -28.7 -28.9 28.64 6 7 31 242 000 130100 99 -22-22-22 000 6 10 06 -29.2 -29.5 28.65 6 7 36 247 000 130100 97 -22-22-22 000 7 10 07 -29.2 -29.5 28.61 6 7 37 248 000 130 99 95 -22-22-22 000 8 10 08 -28.9 -29.2 28.61 6 7 41 252 000 130 96 93 -21-22-22 000 9 10 09 -29.2 -29.7 28.61 7 8 44 255 000 130 93 95 -21-21-22 000 10 10 10 -29.2 -29.7 28.59 7 9 42 253 000 130 93 96 -21-21-22 000 11 10 11 -27.3 -28.1 28.57 7 8 41 252 000 128 90 96 -21-21-21 000 12 10 12 -27.4 -28.0 28.57 7 8 42 253 000 128 93 98 -21-21-22 000 13 10 13 -27.8 -28.3 28.56 7 9 41 252 000 128 96 99 -21-21-22 000 14 10 14 -27.7 -28.0 28.57 6 7 42 253 000 128 96 99 -20-21-22 000 15 10 15 -27.0 -27.2 28.55 5 5 49 260 000 128 97 99 -20-21-22 000 16 10 16 -26.2 -26.2 28.54 4 4 61 272 000 128 97 98 -20-21-21 000 17 10 17 -26.0 -26.0 28.54 4 4 78 289 000 127 98 97 -20-21-21 000 18 10 18 -27.0 -27.2 28.53 5 7 88 299 000 128100 96 -20-21-21 000 19 10 19 -28.2 -28.6 28.53 7 9 92 303 002 129 96 97 -20-21-21 000 20 10 20 -28.2 -28.8 28.52 7 8 79 290 001 129 94100 -20-20-20 000 21 10 21 -27.2 -27.4 28.50 7 7 68 279 001 127 93102 -20-20-20 000 22 10 22 -26.0 -26.1 28.49 5 5 65 276 000 127 93100 -20-20-20 000 23 10 23 -25.3 -25.3 28.49 4 4 65 276 -001 126 93 96 -20-20-20 000 24 11 00 -25.4 -25.4 28.49 3 3 78 289 000 126 95 94 -20-20-20 000 25 11 01 -26.3 -26.4 28.48 5 7 101 312 001 127 94 93 -20-20-20 000 26 11 02 -26.4 -26.6 28.49 6 7 102 313 000 127 92 94 -20-20-20 000 27 11 03 -27.0 -27.4 28.48 6 8 93 304 000 127 92 95 -20-20-20 000 28 11 04 -27.3 -27.8 28.47 6 7 81 292 000 128 92 92 -19-19-20 000 29 11 05 -26.4 -26.7 28.46 5 5 73 284 001 127 91 94 -19-19-19 000 30 11 06 -25.3 -25.6 28.47 5 5 58 269 000 126 93 96 -19-19-20 000 31 11 07 -23.8 -23.9 28.47 4 4 48 259 000 125 94 95 -19-19-20 000 32 11 08 -23.2 -23.3 28.45 2 2 44 255 000 124 95 96 -19-19-20 000 33 11 09 -23.2 -23.3 28.44 1 6 121 332 001 124 97 99 -19-20-20 001 34 11 10 -24.6 -25.1 28.44 5 8 118 329 000 125 98101 -19-20-20 002 35 11 11 -24.2 -24.8 28.44 5 6 111 322 000 125 98101 -19-19-20 002 36 11 12 -23.7 -24.5 28.45 4 5 107 318 -001 119 98101 -19-19-20 002 37 11 13 -22.9 -24.0 28.45 3 5 99 310 -001 115101102 -19-20-20 003 38 11 14 -22.6 -24.3 28.45 3 3 83 294 000 106102102 -20-20-20 005 39 11 15 -22.6 -24.4 28.45 2 2 62 273 000 106101101 -20-20-20 005 40 11 16 -23.1 -24.7 28.45 1 5 356 207 000 108100101 -20-20-20 004 41 11 17 -23.3 -24.9 28.45 2 4 294 145 000 108102102 -21-20-21 004 42 11 18 -23.8 -25.3 28.45 3 4 254 105 000 110101102 -21-21-21 004 43 11 19 -24.8 -26.5 28.45 3 6 199 50 000 110101101 -21-21-21 004 44 11 20 -25.3 -27.2 28.46 2 5 189 40 001 107101103 -21-21-22 004 45 11 21 -25.7 -27.6 28.46 2 4 184 35 000 108101104 -21-21-22 003 46 11 22 -26.1 -27.8 28.47 0 3 156 7 000 109106104 -21-22-22 002 47 11 23 -26.2 -27.7 28.47 0 3 42 253 000 111101105 -22-22-22 002 48 12 00 -26.7 -27.9 28.48 3 3 347 198 -001 114104105 -22-22-23 002 49 12 01 -27.8 -28.4 28.49 4 8 306 157 000 123101103 -23-22-23 001 50 12 02 -29.8 -30.1 28.50 6 9 291 142 000 131103104 -24-23-23 001 51 12 03 -30.9 -31.4 28.51 7 10 289 140 000 132104108 -23-23-24 000 52 12 04 -31.4 -31.9 28.52 7 10 292 143 000 133108111 -24-24-24 000 53 12 05 -31.5 -32.0 28.53 7 9 299 150 000 133105111 -24-24-24 000 54 12 06 -31.3 -32.4 28.54 7 10 307 158 000 126104105 -25-25-25 001 55 12 07 -31.5 -32.6 28.55 7 11 317 168 000 127105109 -25-25-25 002 56 12 08 -32.8 -33.3 28.55 8 11 328 179 000 135106109 -25-25-25 000 57 12 09 -33.2 -33.8 28.56 8 12 337 188 000 135105108 -25-25-25 000 58 12 10 -33.9 -34.5 28.57 9 13 343 194 000 136104 89 -26-25-25 000 59 12 11 -34.3 -34.9 28.57 9 13 347 198 000 137100 90 -26-25-25 000 60 12 12 -34.6 -35.4 28.58 9 13 348 199 000 135100 86 -26-25-26 000 61 12 13 -35.0 -35.9 28.59 9 13 350 201 000 134101 88 -26-26-26 000 62 12 14 -35.1 -35.9 28.60 9 12 354 205 000 134102 86 -26-26-26 000 63 12 15 -35.0 -35.5 28.61 8 11 356 207 000 136104 85 -26-26-26 000 64 12 16 -34.9 -35.3 28.61 7 10 359 210 000 136108 82 -26-26-26 000 65 12 17 -34.7 -34.9 28.62 7 9 359 210 000 137112 78 -26-26-26 000 66 12 18 -34.7 -34.9 28.62 7 9 359 210 001 137115 73 -26-26-26 000 67 12 19 -34.6 -34.7 28.63 7 8 1 212 002 137115 70 -26-26-26 000 68 12 20 -33.8 -33.8 28.63 6 7 1 212 002 137115 70 -26-26-26 000 69 12 21 -32.8 -32.8 28.63 5 6 0 211 000 136116 72 -26-26-26 000 70 12 22 -32.3 -32.3 28.63 4 5 356 207 -001 135116 70 -26-26-26 000 71 12 23 -32.1 -32.1 28.64 4 4 344 195 000 135118 60 -26-26-27 000 72 13 00 -32.2 -32.2 28.65 3 3 325 176 000 135123 55 -26-27-27 000 73 13 01 -32.4 -32.4 28.65 2 4 283 134 000 135119 57 -27-27-26 000 74 13 02 -32.5 -32.5 28.66 2 6 229 80 000 135114 54 -27-26-27 000 75 13 03 -32.8 -32.8 28.66 2 5 215 66 000 136111 54 -27-26-27 000 76 13 04 -32.7 -32.7 28.66 2 5 207 58 000 135105 55 -27-26-27 000 77 13 05 -32.6 -32.6 28.67 1 5 198 49 000 135100 58 -26-26-27 000 78 13 06 -32.5 -32.5 28.68 1 4 208 59 000 135 94 62 -27-26-27 000 79 13 07 -32.4 -32.4 28.68 1 5 210 61 000 135 96 61 -27-27-27 000 80 13 08 -32.3 -32.3 28.69 1 5 212 63 000 135 98 61 -27-27-27 000 81 13 09 -32.4 -32.4 28.70 1 4 213 64 001 135 94 60 -27-27-27 000 82 13 10 -32.3 -32.3 28.70 0 3 208 59 000 135 93 55 -26-27-28 000 83 13 11 -32.2 -32.2 28.71 0 3 244 95 001 134 99 50 -27-27-28 000 84 13 12 -31.9 -31.9 28.72 1 3 266 117 000 131100 46 -27-27-28 000 85 13 13 -31.8 -31.8 28.72 1 3 271 122 000 129100 42 -27-27-28 000 86 13 14 -31.8 -31.8 28.73 1 3 275 126 000 128101 36 -27-27-27 000 87 13 15 -32.0 -32.0 28.74 0 3 222 73 000 130102 27 -27-27-27 000 88 13 16 -32.4 -32.4 28.75 1 2 98 309 000 134102 20 -27-27-27 000 89 13 17 -32.5 -32.5 28.75 2 2 83 294 000 135102 18 -27-27-27 000 90 13 18 -33.0 -33.0 28.76 3 3 71 282 000 136102 20 -27-27-27 000 91 13 19 -33.0 -33.0 28.76 4 4 50 261 000 136105 17 -26-27-27 000 92 13 20 -32.2 -32.2 28.76 5 5 43 254 000 135 98 15 -26-27-27 000 93 13 21 -32.1 -32.1 28.76 4 4 44 255 000 135 95 17 -26-27-27 000 94 13 22 -32.0 -32.0 28.77 4 4 54 265 000 135 92 19 -26-26-26 000 95 13 23 -32.6 -32.6 28.77 5 5 72 283 000 136 90 20 -26-26-26 000 96 14 00 -34.5 -34.5 28.77 6 7 87 298 000 137 89 19 -26-26-25 000 97 14 01 -34.8 -34.8 28.78 7 9 91 302 000 137 84 18 -26-26-25 000 98 14 02 -34.8 -34.9 28.77 8 10 94 305 000 137 75 15 -26-25-24 000 99 14 03 -34.7 -35.0 28.77 9 11 93 304 000 137 67 11 -25-25-24 000 100 14 04 -34.5 -34.9 28.76 10 12 88 299 000 137 61 10 -25-24-23 000 101 14 05 -33.7 -34.2 28.76 10 14 86 297 000 136 49 11 -24-23-22 000 102 14 06 -33.2 -33.7 28.75 10 15 87 298 000 136 33 11 -23-22-21 000 103 14 07 -32.6 -33.1 28.74 11 16 86 297 000 135 23 11 -23-21-20 000 104 14 08 -32.0 -32.5 28.74 11 18 86 297 000 135 17 19 -22-20-20 000 105 14 09 -31.3 -31.8 28.73 11 20 84 295 000 134 17 25 -20-19-19 000 106 14 10 -30.8 -31.3 28.72 11 21 84 295 000 133 26 57 -19-18-18 000 107 14 11 -30.1 -30.6 28.72 12 21 83 294 001 132 49 56 -18-18-18 000 108 14 12 -29.3 -29.8 28.71 12 21 81 292 000 131 47 63 -17-17-17 000 109 14 13 -28.4 -29.3 28.70 12 20 74 285 001 123 27 65 -17-17-17 000 110 14 14 -27.1 -29.6 28.69 12 19 69 280 001 102 71 71 -17-17-16 000 111 14 15 -26.2 -30.9 28.68 12 19 62 273 000 76 92 85 -17-16-16 000 112 14 16 -25.6 -28.3 28.68 12 20 55 266 000 98 81103 -16-16-16 000 113 14 17 -24.5 -24.9 28.67 11 16 48 259 -003 125 94101 -16-16-16 000 114 14 18 -24.7 -25.2 28.67 9 14 38 249 -002 125102 93 -15-16-16 000 115 14 19 -24.6 -25.1 28.67 10 14 29 240 -002 125106 98 -15-16-16 000 116 14 20 -23.4 -24.0 28.67 8 14 27 238 -004 123105 92 -15-15-16 000 117 14 21 -22.5 -23.1 28.67 10 16 31 242 -002 123110 88 -15-16-16 000 118 14 22 -23.1 -23.6 28.67 11 21 26 237 -006 124104 84 -16-15-15 000 119 14 23 -22.8 -23.3 28.67 13 23 20 231 -009 124 97 85 -16-15-14 000 120 15 00 -22.4 -22.9 28.67 12 22 20 231 -005 123102 94 -16-16-15 001 * 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.