USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-06-11/12 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 11 12 -32.0 -35.4 28.51 4 5 209 60 000 98 90 71 -25-23-22 000 1 11 13 -31.6 -32.3 28.51 3 7 207 58 000 123 87 67 -23-22-22 000 2 11 14 -30.6 -30.8 28.50 4 9 231 82 -001 127 87 71 -23-22-22 000 3 11 15 -31.0 -31.0 28.52 6 10 242 93 001 133 87 75 -23-22-22 000 4 11 16 -32.9 -33.0 28.53 7 12 248 99 000 135 88 79 -23-22-23 000 5 11 17 -33.2 -33.3 28.53 7 12 250 101 000 135 90 77 -23-22-23 000 6 11 18 -33.4 -33.6 28.52 7 12 254 105 000 135 92 77 -23-23-23 000 7 11 19 -33.2 -33.4 28.54 7 11 263 114 001 135 93 76 -23-23-23 000 8 11 20 -33.2 -33.3 28.53 7 11 271 122 000 135 96 77 -23-23-23 000 9 11 21 -33.0 -33.1 28.54 7 11 273 124 000 135 95 75 -23-23-24 000 10 11 22 -33.2 -33.4 28.56 8 12 275 126 000 133 95 79 -23-23-24 000 11 11 23 -33.6 -34.6 28.58 9 13 270 121 001 124 95 80 -24-24-24 000 12 12 00 -34.0 -34.8 28.56 9 13 267 119 001 128106 82 -25-25-24 000 13 12 01 -34.8 -36.2 28.57 10 16 256 107 000 122122 83 -26-25-25 000 14 12 02 -35.4 -37.9 28.60 9 15 258 109 000 106107 86 -26-25-25 000 15 12 03 -35.0 -38.3 28.62 9 13 264 115 000 94105 94 -25-25-25 000 16 12 04 -34.4 -37.3 28.64 9 13 271 122 000 97104102 -24-25-25 000 17 12 05 -34.7 -37.4 28.64 9 14 272 123 000 102 86110 -24-25-25 000 18 12 06 -35.1 -38.3 28.64 9 15 268 119 001 95 78121 -24-24-25 000 19 12 07 -35.3 -38.5 28.66 9 14 257 108 001 96 69117 -25-24-25 000 20 12 08 -35.3 -36.9 28.67 9 14 249 100 000 117 55118 -25-25-26 000 21 12 09 -34.9 -37.0 28.68 8 14 245 96 000 108 92116 -26-25-26 000 22 12 10 -35.1 -39.4 28.69 9 15 243 94 000 82103117 -26-26-26 000 23 12 11 -35.2 -38.6 28.70 8 15 236 87 -001 94108114 -26-26-26 000 24 12 12 -35.1 -36.9 28.71 8 14 231 82 000 115107109 -26-26-26 000 25 12 13 -35.0 -36.2 28.72 7 14 220 71 000 121107110 -27-27-26 000 26 12 14 -35.3 -36.3 28.74 6 12 214 65 000 123104115 -27-27-26 000 27 12 15 -34.2 -35.4 28.74 5 11 200 51 001 120 99123 -27-26-26 000 28 12 16 -33.7 -35.3 28.74 4 9 197 48 000 116 96122 -27-27-27 001 29 12 17 -33.0 -35.2 28.76 2 6 175 26 -001 106102115 -27-27-27 001 30 12 18 -33.0 -34.7 28.76 3 5 135 346 000 110103109 -27-28-28 000 31 12 19 -33.1 -34.3 28.76 3 5 114 325 000 117103111 -27-28-28 000 32 12 20 -33.1 -33.7 28.76 4 5 97 308 000 124102113 -27-27-28 000 33 12 21 -33.2 -33.6 28.76 5 5 89 300 000 127104119 -27-27-28 000 34 12 22 -33.7 -33.8 28.76 5 5 90 301 000 133106118 -27-27-28 000 35 12 23 -34.5 -34.8 28.76 6 7 99 310 000 131109119 -27-27-28 000 36 13 00 -35.4 -36.1 28.76 7 8 104 315 000 125109120 -27-27-28 000 37 13 01 -35.8 -36.8 28.76 8 10 105 316 000 124111121 -27-27-28 000 38 13 02 -35.9 -37.0 28.75 9 11 106 317 000 124105124 -27-27-28 000 39 13 03 -35.6 -37.3 28.75 9 12 107 318 000 118106124 -27-27-28 000 40 13 04 -35.7 -37.2 28.75 9 14 109 320 000 122106123 -27-27-28 001 41 13 05 -36.0 -37.4 28.75 9 15 111 322 000 124106122 -27-27-28 001 42 13 06 -36.3 -37.7 28.75 10 15 112 323 000 125109119 -27-27-28 000 43 13 07 -36.4 -37.8 28.75 10 16 112 323 000 125109115 -27-27-27 000 44 13 08 -36.3 -37.5 28.74 10 16 112 324 000 128109111 -27-27-27 000 45 13 09 -36.2 -37.5 28.72 10 16 113 324 000 128109104 -27-27-27 000 46 13 10 -36.2 -37.3 28.72 10 16 114 325 000 130108100 -26-26-27 000 47 13 11 -36.1 -37.0 28.72 10 16 112 323 000 132106 97 -26-26-27 000 48 13 12 -35.9 -36.5 28.72 9 15 112 323 000 136105 92 -26-26-27 000 49 13 13 -35.7 -36.2 28.71 9 15 112 323 000 138103 89 -26-26-27 000 50 13 14 -35.6 -36.0 28.71 9 14 111 322 000 138101 82 -26-26-26 000 51 13 15 -35.3 -35.7 28.71 9 14 110 321 000 138100 73 -26-26-26 000 52 13 16 -35.1 -35.6 28.71 9 15 110 321 000 138 98 66 -26-26-26 000 53 13 17 -35.0 -35.5 28.70 9 15 111 322 000 137 96 63 -25-25-26 000 54 13 18 -34.9 -35.4 28.68 10 15 112 323 000 137 95 64 -25-25-26 000 55 13 19 -34.8 -35.3 28.67 10 15 111 322 000 137 95 64 -25-25-25 000 56 13 20 -34.7 -35.2 28.66 10 15 109 320 000 137 97 63 -25-25-25 000 57 13 21 -34.5 -35.0 28.66 10 15 107 318 000 137 97 61 -24-25-25 000 58 13 22 -34.4 -34.8 28.65 9 13 103 314 000 137 94 56 -24-25-25 000 59 13 23 -33.8 -34.3 28.64 9 12 98 309 000 136 91 55 -24-24-24 000 60 14 00 -33.2 -33.7 28.64 9 12 98 309 001 135 88 55 -24-24-24 000 61 14 01 -32.9 -33.4 28.62 9 12 96 307 000 135 85 57 -24-24-24 000 62 14 02 -32.9 -33.3 28.61 9 12 94 305 000 134 81 59 -23-24-24 000 63 14 03 -32.8 -33.2 28.60 9 12 90 301 000 134 78 61 -23-23-23 000 64 14 04 -32.8 -33.2 28.59 9 12 90 301 000 134 69 62 -23-23-23 000 65 14 05 -32.7 -33.1 28.58 9 12 89 300 000 134 65 62 -23-23-23 000 66 14 06 -32.5 -32.9 28.57 9 12 87 298 000 134 63 62 -22-22-22 000 67 14 07 -32.0 -32.3 28.56 9 12 80 291 000 133 62 64 -22-22-22 000 68 14 08 -31.4 -31.7 28.55 9 12 75 286 000 132 62 64 -22-22-22 000 69 14 09 -30.9 -31.8 28.54 10 12 72 283 000 123 63 68 -21-21-21 000 70 14 10 -30.5 -31.4 28.53 10 12 69 280 000 122 63 68 -21-21-21 000 71 14 11 -30.2 -31.2 28.52 10 12 69 280 000 119 60 65 -20-20-20 000 72 14 12 -29.8 -30.8 28.51 10 13 66 277 000 119 56 66 -20-19-19 000 73 14 13 -29.2 -30.2 28.49 11 14 63 274 001 120 54 67 -20-19-19 000 74 14 14 -28.6 -29.6 28.48 11 16 59 270 002 120 48 78 -19-18-18 000 75 14 15 -28.0 -29.0 28.46 11 15 62 273 000 121 32 91 -18-17-17 000 76 14 16 -27.3 -28.2 28.45 11 17 57 268 -001 121 23 94 -18-17-18 000 77 14 17 -26.9 -27.9 28.43 11 16 55 266 -002 120 61 79 -17-17-17 000 78 14 18 -26.5 -29.0 28.42 11 16 51 262 -004 100 94 80 -17-17-18 000 79 14 19 -26.2 -28.5 28.41 11 16 50 261 -007 101100 86 -17-17-18 000 80 14 20 -25.3 -25.8 28.39 11 15 49 260 -005 126 97 85 -17-17-18 000 81 14 21 -24.3 -24.9 28.38 10 14 50 261 -005 125103 87 -17-17-18 000 82 14 22 -23.7 -24.2 28.37 10 15 46 257 -003 125 97 87 -17-17-17 000 83 14 23 -23.8 -24.3 28.37 10 15 36 247 -001 125 89103 -16-16-17 000 84 15 00 -23.4 -24.3 28.38 9 15 27 238 001 120 99102 -17-17-18 007 85 15 01 -22.8 -24.2 28.38 9 15 22 233 000 113100 98 -17-17-18 008 86 15 02 -23.1 -24.5 28.38 11 18 22 233 -002 113101 96 -17-17-18 008 87 15 03 -23.8 -25.1 28.39 13 22 16 227 -008 115107 89 -18-19-19 006 88 15 04 -23.7 -24.3 28.40 11 18 18 229 -004 125113 76 -18-19-20 001 89 15 05 -24.2 -24.7 28.41 10 17 23 234 -008 126110 79 -19-20-20 000 90 15 06 -25.1 -25.7 28.44 9 13 20 231 -006 127103 65 -21-20-21 000 91 15 07 -26.7 -27.3 28.46 10 15 18 229 -006 129 91 72 -21-20-21 000 92 15 08 -28.3 -28.9 28.48 10 16 20 231 000 131 90 74 -20-20-20 000 93 15 09 -29.7 -30.3 28.50 13 22 7 218 002 133 95 68 -21-20-21 000 94 15 10 -29.9 -30.4 28.52 16 25 358 209 000 133101 70 -22-20-19 000 95 15 11 -30.4 -31.0 28.55 15 24 1 212 001 134101 80 -21-20-19 000 96 15 12 -30.9 -31.5 28.57 15 23 7 218 003 135 95 83 -21-19-20 000 97 15 13 -31.3 -31.8 28.59 16 23 10 221 004 135 96 82 -23-20-20 000 98 15 14 -31.5 -32.0 28.61 15 22 10 221 001 135 95 84 -23-20-20 000 99 15 15 -31.3 -31.8 28.62 15 23 12 223 -001 135 95 84 -23-21-20 000 100 15 16 -31.1 -31.6 28.63 14 22 15 226 003 135 98 94 -23-21-21 001 101 15 17 -30.7 -31.2 28.64 13 21 16 227 003 134 99101 -23-22-21 000 102 15 18 -30.3 -30.8 28.64 12 18 25 236 002 133100109 -23-22-20 000 103 15 19 -30.1 -30.7 28.65 11 16 35 246 002 133100116 -23-21-20 000 104 15 20 -29.6 -30.2 28.64 11 16 47 258 005 132 95116 -22-20-20 000 105 15 21 -29.3 -29.9 28.64 11 15 57 268 004 132 88115 -21-19-20 000 106 15 22 -29.0 -29.6 28.63 10 15 68 279 003 131 84112 -20-19-20 000 107 15 23 -28.2 -28.7 28.61 11 18 75 286 004 130 78 99 -19-19-19 000 108 16 00 -27.0 -27.6 28.59 12 21 82 293 001 129 80 79 -19-19-19 000 109 16 01 -27.1 -27.6 28.56 12 22 91 302 -003 129 75 59 -19-19-19 000 110 16 02 -26.6 -28.2 28.54 11 21 90 301 -001 114 70 63 -17-18-18 000 111 16 03 -26.6 -28.3 28.51 11 19 97 308 006 112 67 74 -16-17-17 000 112 16 04 -26.0 -27.9 28.49 11 21 102 313 002 107 63 65 -16-17-17 000 113 16 05 -25.1 -27.5 28.46 11 21 111 322 000 101 56 49 -16-16-16 000 114 16 06 -24.1 -27.2 28.44 11 21 111 322 000 93 52 38 -16-15-15 000 115 16 07 -23.1 -26.2 28.43 10 20 107 318 -001 93 51 35 -15-15-14 000 116 16 08 -22.4 -25.3 28.41 9 17 103 314 000 94 51 38 -14-14-14 000 117 16 09 -21.6 -24.8 28.39 8 15 92 303 001 90 50 38 -13-13-14 000 118 16 10 -21.3 -24.7 28.38 8 13 86 297 001 86 49 43 -13-13-14 000 119 16 11 -21.8 -25.0 28.38 8 12 77 288 003 86 45 53 -13-14-14 000 120 16 12 -22.0 -25.6 28.38 8 9 56 267 002 82 42 70 -14-14-15 000 * 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.