USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-06-10/12 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 10 12 -26.6 -29.6 28.59 3 3 88 299 000 99 98 98 -23-22-22 000 1 10 13 -27.6 -27.6 28.58 5 5 80 291 000 129 95 97 -22-21-22 000 2 10 14 -28.1 -28.1 28.58 5 5 73 284 000 130 95 99 -21-21-22 000 3 10 15 -27.5 -27.5 28.57 5 5 71 282 000 129 96 99 -21-21-22 000 4 10 16 -27.1 -27.1 28.57 4 4 83 294 000 129 96 95 -21-21-21 000 5 10 17 -28.4 -28.4 28.56 5 5 94 305 001 130 95 94 -21-21-21 000 6 10 18 -29.9 -30.2 28.56 7 8 85 296 001 131 95 94 -21-21-21 000 7 10 19 -29.4 -29.9 28.54 7 8 73 284 000 130 93 94 -21-21-21 000 8 10 20 -28.9 -29.2 28.53 7 7 61 272 000 130 93 95 -20-20-21 000 9 10 21 -28.0 -28.2 28.53 6 6 62 273 000 129 93 96 -20-20-21 000 10 10 22 -26.9 -26.9 28.53 4 4 59 270 000 128 94 95 -20-20-21 000 11 10 23 -26.8 -26.8 28.52 3 3 77 288 001 128 96 94 -20-21-21 000 12 11 00 -28.3 -28.3 28.52 6 9 121 332 000 129 95 93 -20-20-21 000 13 11 01 -28.8 -29.0 28.51 7 8 112 323 000 129 94 92 -20-20-21 000 14 11 02 -29.0 -29.3 28.52 7 9 105 316 000 130 92 91 -20-20-20 000 15 11 03 -28.9 -29.2 28.52 7 9 103 314 000 130 92 91 -20-20-20 000 16 11 04 -28.8 -29.1 28.51 7 8 100 311 000 130 93 91 -20-20-21 000 17 11 05 -28.6 -28.8 28.50 6 7 101 312 000 130 95 91 -20-20-21 000 18 11 06 -27.8 -27.9 28.49 5 6 106 317 000 129 95 90 -20-20-21 000 19 11 07 -27.4 -27.4 28.50 5 7 121 332 000 129 95 90 -20-20-21 000 20 11 08 -28.3 -28.5 28.49 5 9 130 341 000 130 94 90 -20-20-20 000 21 11 09 -28.9 -29.1 28.48 5 10 135 346 000 130 93 90 -20-20-20 000 22 11 10 -29.2 -29.4 28.48 5 9 134 345 000 131 91 89 -21-20-20 000 23 11 11 -29.0 -29.1 28.48 5 9 132 343 000 131 91 89 -21-20-21 000 24 11 12 -28.2 -28.3 28.48 4 8 127 338 001 130 90 89 -21-20-21 000 25 11 13 -27.8 -27.8 28.47 4 6 121 332 000 130 92 87 -21-21-21 000 26 11 14 -27.6 -27.6 28.47 3 5 116 327 000 129 95 86 -21-21-22 000 27 11 15 -27.3 -27.3 28.47 2 4 117 328 000 129100 86 -20-21-22 000 28 11 16 -27.2 -27.2 28.47 0 3 136 347 000 128105 90 -21-22-22 000 29 11 17 -27.7 -27.7 28.47 0 3 339 190 000 129104 88 -22-22-21 000 30 11 18 -27.7 -27.7 28.48 1 4 219 70 000 129 97 88 -21-22-22 000 31 11 19 -27.8 -27.8 28.48 2 5 228 79 000 129 95 92 -22-22-22 000 32 11 20 -28.5 -28.5 28.49 2 5 225 76 000 130 95 94 -22-22-22 000 33 11 21 -28.9 -28.9 28.49 1 5 229 80 000 131 95 97 -22-22-22 000 34 11 22 -29.2 -29.2 28.50 1 3 269 120 000 131 99 97 -23-23-23 000 35 11 23 -29.0 -29.0 28.50 2 4 294 145 000 131105 99 -23-23-23 000 36 12 00 -30.7 -30.7 28.51 5 6 301 152 000 133106102 -24-24-24 000 37 12 01 -32.3 -32.7 28.52 7 9 296 147 000 134104105 -24-24-24 000 38 12 02 -32.1 -32.6 28.53 8 10 301 152 000 134101106 -24-24-24 000 39 12 03 -32.4 -32.9 28.54 8 11 308 159 000 134100105 -24-24-24 000 40 12 04 -33.0 -33.6 28.55 9 13 316 167 000 135 95107 -24-24-25 000 41 12 05 -33.8 -34.4 28.56 10 14 324 175 000 137 87108 -25-24-25 000 42 12 06 -34.7 -35.5 28.57 9 14 330 181 000 135 81104 -25-25-25 000 43 12 07 -35.2 -36.1 28.57 9 15 338 189 000 134 80 96 -25-25-25 000 44 12 08 -35.5 -36.6 28.58 10 15 344 195 000 132 83 94 -26-25-25 000 45 12 09 -35.9 -37.1 28.59 10 15 349 200 000 130 92 73 -26-25-25 000 46 12 10 -36.4 -37.7 28.59 10 16 350 201 000 128101 71 -26-25-25 000 47 12 11 -36.7 -38.1 28.60 11 16 349 200 001 129107 71 -26-25-25 000 48 12 12 -37.0 -38.4 28.61 10 16 346 197 000 129110 74 -26-25-25 000 49 12 13 -37.1 -38.5 28.62 10 16 343 194 000 129112 77 -25-25-26 000 50 12 14 -37.3 -38.7 28.63 10 15 336 187 001 129115 80 -26-26-26 000 51 12 15 -37.2 -38.5 28.64 9 13 330 181 001 130116 82 -26-26-26 000 52 12 16 -36.4 -37.1 28.65 8 11 321 172 001 134109 86 -26-26-27 000 53 12 17 -35.0 -35.1 28.65 7 8 310 161 000 138107 87 -26-27-27 000 54 12 18 -32.5 -32.5 28.65 4 5 292 143 -002 133107 79 -26-27-27 001 55 12 19 -32.2 -32.3 28.65 1 5 246 97 -003 128107 67 -27-27-27 000 56 12 20 -32.4 -32.4 28.65 2 5 116 327 000 134105 63 -26-27-27 000 57 12 21 -32.5 -32.5 28.65 3 4 98 309 000 135107 56 -26-27-27 000 58 12 22 -32.3 -32.3 28.65 5 6 98 309 000 135111 48 -26-26-26 000 59 12 23 -33.3 -33.3 28.64 5 7 101 312 000 136115 46 -26-26-26 000 60 13 00 -33.7 -33.7 28.64 6 7 99 310 000 136116 47 -26-26-26 000 61 13 01 -33.8 -33.8 28.64 6 7 92 303 000 137112 50 -26-26-26 000 62 13 02 -34.0 -34.3 28.63 6 6 83 294 000 137 99 49 -26-26-26 000 63 13 03 -32.6 -33.0 28.63 6 6 81 292 000 135 80 44 -25-25-25 000 64 13 04 -31.8 -32.4 28.62 6 7 83 294 000 134 90 40 -25-25-25 000 65 13 05 -31.3 -31.9 28.62 7 8 80 291 000 133102 34 -25-25-25 000 66 13 06 -30.6 -31.3 28.61 7 8 76 287 000 131100 30 -24-24-24 000 67 13 07 -30.1 -31.1 28.61 6 7 70 281 001 125 97 32 -24-24-24 000 68 13 08 -29.8 -30.7 28.61 6 6 68 279 000 124 96 35 -24-24-24 000 69 13 09 -29.0 -29.7 28.60 5 5 68 279 000 124 95 34 -24-24-24 000 70 13 10 -28.5 -29.1 28.59 4 4 76 287 000 125 95 37 -24-23-24 000 71 13 11 -28.9 -29.4 28.59 4 4 83 294 000 128 95 50 -24-23-23 000 72 13 12 -28.8 -29.5 28.59 5 5 82 293 000 126 96 62 -23-23-23 000 73 13 13 -28.7 -29.3 28.59 5 5 73 284 000 126 97 76 -23-23-23 000 74 13 14 -27.8 -28.6 28.59 5 5 59 270 000 123 96 88 -23-23-23 000 75 13 15 -27.3 -28.3 28.58 5 5 50 261 000 120 96 93 -22-23-23 000 76 13 16 -27.1 -28.0 28.58 5 5 45 256 000 121 96 96 -22-22-23 000 77 13 17 -27.0 -27.8 28.58 5 5 38 249 000 122 96 98 -22-22-23 000 78 13 18 -27.4 -27.6 28.58 5 6 29 240 001 127 95 99 -22-22-22 000 79 13 19 -27.7 -27.7 28.58 5 6 25 236 001 129 95 98 -22-22-22 000 80 13 20 -27.9 -27.9 28.58 4 5 21 232 000 130 95 97 -22-22-22 000 81 13 21 -28.0 -28.0 28.58 5 5 21 232 000 130 96 95 -22-22-22 000 82 13 22 -27.9 -27.9 28.59 4 5 23 234 000 130 95 95 -22-22-22 000 83 13 23 -27.4 -27.4 28.59 4 4 25 236 000 129 91 95 -21-21-21 000 84 14 00 -26.8 -26.8 28.60 3 3 28 239 001 128 91 92 -21-21-21 000 85 14 01 -26.8 -26.8 28.61 4 4 31 242 001 128 91 90 -21-21-21 000 86 14 02 -27.5 -27.5 28.61 5 6 33 244 000 129 89 88 -21-21-21 000 87 14 03 -28.2 -28.2 28.62 6 7 33 244 000 129 91 85 -21-21-20 000 88 14 04 -28.6 -28.6 28.64 7 8 33 244 000 129 91 82 -20-20-20 000 89 14 05 -29.0 -29.2 28.65 7 9 33 244 000 129 92 81 -20-20-20 000 90 14 06 -29.2 -29.5 28.66 8 11 35 246 000 130 92 79 -20-19-19 000 91 14 07 -29.0 -29.5 28.66 9 12 37 248 000 129 89 79 -19-19-19 000 92 14 08 -28.3 -28.9 28.67 10 13 35 246 000 129 90 82 -19-19-18 000 93 14 09 -27.7 -28.3 28.69 10 15 35 246 000 129100 91 -19-18-18 000 94 14 10 -27.2 -27.7 28.70 11 16 38 249 000 128109 98 -18-18-17 000 95 14 11 -26.5 -27.0 28.71 11 17 38 249 001 128104101 -18-18-17 000 96 14 12 -25.5 -26.1 28.72 11 18 32 243 -001 127113101 -17-18-16 000 97 14 13 -24.9 -25.4 28.72 11 19 29 240 -004 126118 98 -17-18-16 000 98 14 14 -23.6 -24.1 28.73 12 19 31 242 -006 125118 91 -16-17-16 000 99 14 15 -22.9 -23.5 28.73 10 18 30 241 -009 124117 78 -16-17-17 000 100 14 16 -22.5 -23.1 28.74 9 16 26 237 -012 123118 74 -16-17-16 000 101 14 17 -23.0 -23.6 28.74 10 16 25 236 -006 123109 76 -15-16-16 000 102 14 18 -23.3 -23.9 28.74 9 17 25 236 -003 123102 88 -15-15-15 000 103 14 19 -22.9 -23.5 28.74 9 14 39 250 -005 123104 95 -15-15-15 000 104 14 20 -22.7 -23.3 28.74 9 14 49 260 -005 122102 92 -14-15-15 000 105 14 21 -22.7 -23.2 28.74 10 17 53 264 -002 123 84 88 -14-14-15 000 106 14 22 -22.7 -23.2 28.73 10 16 51 262 -006 124 91 94 -14-14-15 000 107 14 23 -20.5 -21.0 28.73 9 14 52 263 -007 121102 78 -14-15-15 000 108 15 00 -20.4 -21.1 28.71 7 13 41 252 -001 120 90 83 -12-13-14 000 109 15 01 -19.6 -20.0 28.71 11 21 57 268 -006 120104 85 -13-14-14 004 110 15 02 -18.3 -18.7 28.70 11 20 63 274 -005 119108 89 -14-14-15 004 111 15 03 -17.7 -18.1 28.68 11 20 56 267 -008 118108 85 -13-14-15 006 112 15 04 -17.1 -17.7 28.67 11 18 55 266 -004 114100 95 -13-14-15 005 113 15 05 -16.8 -17.4 28.67 10 18 57 268 -003 115108 85 -13-14-15 006 114 15 06 -17.3 -18.0 28.66 10 18 60 271 -005 114103 94 -13-14-14 000 115 15 07 -17.1 -18.3 28.64 10 16 60 271 003 109 97 91 -12-13-14 000 116 15 08 -17.5 -18.4 28.63 10 17 51 262 005 111 97 74 -12-13-14 000 117 15 09 -17.8 -18.2 28.62 12 19 40 251 011 118 87 68 -12-13-13 000 118 15 10 -16.4 -16.8 28.61 12 16 34 245 006 116 97 67 -12-13-13 000 119 15 11 -16.9 -17.3 28.61 9 14 40 251 014 116 81 82 -12-12-13 000 120 15 12 -15.5 -16.5 28.61 9 18 43 254 006 108104100 -12-13-14 025 * 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.