USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2025-11-12/00 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 12 00 -19.9 -23.0 28.85 7 12 93 304 000 91 77 65 -19-19-19 000 1 12 01 -19.8 -22.6 28.83 8 13 94 305 000 94 73 62 -19-18-18 000 2 12 02 -20.0 -22.7 28.82 8 12 100 311 001 94 68 58 -18-18-18 000 3 12 03 -20.5 -23.0 28.80 7 13 109 320 000 97 66 55 -18-17-18 000 4 12 04 -21.3 -23.3 28.78 8 13 118 329 001 104 66 53 -18-17-18 000 5 12 05 -22.1 -23.6 28.76 8 14 116 327 001 111 64 48 -17-17-17 000 6 12 06 -22.8 -24.0 28.74 8 15 117 328 001 115 61 43 -17-17-17 000 7 12 07 -23.2 -24.4 28.72 8 15 118 329 000 116 58 38 -16-16-17 000 8 12 08 -23.4 -24.8 28.69 8 14 118 329 000 114 56 34 -16-16-17 000 9 12 09 -23.6 -25.1 28.67 8 14 119 330 000 112 56 32 -16-16-16 000 10 12 10 -23.8 -25.1 28.65 8 14 125 336 000 114 56 30 -16-16-16 000 11 12 11 -23.7 -24.6 28.65 8 14 131 342 000 119 58 29 -16-16-16 000 12 12 12 -23.4 -24.0 28.62 7 13 135 346 000 123 62 27 -16-16-16 000 13 12 13 -22.9 -23.5 28.59 7 13 138 349 000 123 63 26 -16-16-16 000 14 12 14 -21.9 -22.6 28.57 6 12 143 354 000 122 65 25 -15-15-16 000 15 12 15 -21.7 -22.5 28.57 6 11 149 0 000 122 66 25 -15-15-16 000 16 12 16 -21.2 -21.9 28.56 5 9 152 3 000 122 65 24 -15-15-15 000 17 12 17 -20.3 -21.1 28.54 4 8 159 10 000 121 63 24 -15-15-15 000 18 12 18 -19.7 -20.4 28.52 4 8 175 26 001 120 64 23 -15-15-15 000 19 12 19 -18.8 -19.8 28.50 3 8 179 30 -001 114 63 22 -15-15-15 000 20 12 20 -17.9 -19.6 28.49 3 8 183 34 000 103 59 22 -15-15-15 000 21 12 21 -17.4 -19.7 28.49 2 6 195 46 000 96 55 22 -15-15-15 000 22 12 22 -16.8 -19.6 28.48 1 4 202 53 001 92 54 23 -15-15-15 000 23 12 23 -16.6 -19.3 28.47 1 2 228 79 000 93 51 25 -15-15-15 000 24 13 00 -16.5 -19.0 28.46 1 1 246 97 001 94 45 28 -15-15-15 000 25 13 01 -16.6 -19.4 28.45 1 1 301 152 000 90 42 35 -14-14-15 000 26 13 02 -16.4 -19.6 28.45 2 3 357 208 000 83 49 56 -14-15-15 000 27 13 03 -17.2 -20.3 28.44 4 5 351 202 000 86 51 71 -14-15-15 000 28 13 04 -18.1 -20.1 28.42 5 6 344 195 000 100 51 80 -15-15-15 000 29 13 05 -19.0 -20.4 28.41 5 6 340 191 001 107 45 85 -15-15-15 000 30 13 06 -19.6 -21.0 28.41 5 6 344 195 000 108 37 87 -15-15-15 000 31 13 07 -20.4 -21.5 28.41 6 7 351 203 001 111 34 87 -15-15-15 000 32 13 08 -21.1 -21.8 28.40 6 8 347 198 000 117 31 84 -15-14-15 000 33 13 09 -21.4 -22.0 28.39 7 8 351 202 001 119 32 80 -15-15-15 000 34 13 10 -22.1 -22.6 28.39 7 9 358 209 001 121 35 78 -15-15-15 000 35 13 11 -22.5 -23.1 28.39 7 9 356 207 000 122 35 80 -15-15-15 000 36 13 12 -22.1 -22.9 28.39 6 9 350 201 000 116 33 79 -15-15-15 000 37 13 13 -21.5 -22.9 28.40 6 8 355 206 001 109 36 78 -15-15-15 000 38 13 14 -21.4 -23.4 28.40 6 8 9 220 002 102 40 78 -15-15-15 000 39 13 15 -21.2 -23.4 28.40 6 8 14 225 002 100 43 81 -15-15-15 000 40 13 16 -20.7 -23.2 28.41 6 8 16 227 001 96 46 94 -15-15-15 000 41 13 17 -19.8 -22.8 28.41 5 7 16 227 000 89 53 93 -15-14-15 000 42 13 18 -18.6 -22.4 28.42 5 7 28 239 000 81 57 98 -14-15-15 000 43 13 19 -17.6 -21.7 28.43 3 6 46 257 000 80 69101 -15-14-15 000 44 13 20 -16.5 -20.9 28.44 2 3 53 264 000 78 83102 -14-14-15 000 45 13 21 -15.4 -20.1 28.45 2 3 86 297 000 75 95105 -14-15-15 000 46 13 22 -14.8 -19.2 28.46 3 5 121 332 000 77 99107 -14-14-15 000 47 13 23 -14.7 -18.7 28.48 5 6 145 356 000 79 98109 -14-14-15 000 48 14 00 -14.9 -18.4 28.49 5 7 160 11 000 84 96107 -14-14-15 000 49 14 01 -15.1 -18.6 28.50 5 6 169 20 000 83 87112 -14-14-15 000 50 14 02 -15.1 -18.3 28.51 6 7 176 27 000 87 86112 -14-14-15 000 51 14 03 -15.3 -18.1 28.52 5 7 181 32 -002 91 82113 -14-14-14 000 52 14 04 -15.6 -18.4 28.53 5 6 191 42 000 90 78118 -14-14-14 000 53 14 05 -16.3 -18.6 28.55 5 6 204 55 000 95 76104 -14-14-14 000 54 14 06 -16.9 -19.0 28.56 3 4 209 61 000 97 88 99 -14-14-14 000 55 14 07 -18.5 -19.8 28.57 2 3 279 130 003 106103 85 -15-14-14 000 56 14 08 -18.8 -21.2 28.59 3 4 284 135 000 96100 81 -15-15-14 000 57 14 09 -18.8 -23.8 28.61 3 3 281 132 000 74102 65 -15-15-15 000 58 14 10 -19.0 -25.1 28.63 1 2 309 160 -002 66102 72 -15-16-15 000 59 14 11 -21.5 -22.0 28.65 6 9 343 194 000 121 71 69 -15-16-15 000 60 14 12 -22.0 -22.6 28.67 7 8 344 195 -002 123 64 70 -15-16-16 000 61 14 13 -21.7 -22.1 28.69 7 10 356 207 -001 123 52 66 -16-16-17 000 62 14 14 -20.2 -21.6 28.71 8 9 352 203 -001 109 54 71 -16-16-17 000 63 14 15 -19.9 -21.3 28.73 8 9 2 213 000 108 58 73 -16-16-17 000 64 14 16 -20.1 -21.8 28.74 7 9 10 221 000 105 68 86 -16-16-17 000 65 14 17 -20.4 -22.2 28.76 9 11 18 229 000 105106107 -16-16-17 000 66 14 18 -20.2 -21.8 28.78 9 11 22 233 000 107105108 -16-16-16 000 67 14 19 -19.9 -21.7 28.80 9 10 30 241 002 104 97106 -16-15-16 000 68 14 20 -19.1 -21.4 28.82 9 12 35 246 001 99 74 94 -16-15-16 000 69 14 21 -18.6 -21.3 28.83 10 13 43 254 001 94 52 66 -16-15-16 000 70 14 22 -18.0 -21.0 28.84 9 13 47 258 000 90 64 88 -16-15-15 000 71 14 23 -17.3 -20.6 28.85 9 13 48 259 000 87 71 85 -15-14-15 000 72 15 00 -16.8 -20.1 28.86 9 13 49 260 -001 86 75 83 -15-14-14 000 73 15 01 -16.6 -19.8 28.88 9 12 54 265 -003 87 80 97 -15-14-15 000 74 15 02 -16.5 -19.1 28.89 8 13 58 269 -001 93 86104 -15-15-15 000 75 15 03 -16.9 -19.4 28.90 9 14 62 273 -002 94 87104 -15-15-15 000 76 15 04 -17.4 -19.0 28.91 8 14 57 268 -003 104 90 93 -15-15-15 000 77 15 05 -17.9 -18.8 28.91 8 14 57 268 -002 113 93 81 -15-15-15 000 78 15 06 -18.6 -19.1 28.91 8 14 54 265 -003 119100 52 -16-15-15 000 79 15 07 -19.8 -20.4 28.92 7 13 54 265 -001 120105 34 -16-16-16 000 80 15 08 -21.0 -21.6 28.93 7 13 50 261 -002 122 99 16 -16-16-16 000 81 15 09 -21.2 -21.8 28.94 7 11 45 256 -003 122103 16 -16-16-17 000 82 15 10 -21.1 -21.7 28.94 8 11 47 258 -005 121106 25 -16-16-17 000 83 15 11 -21.0 -21.6 28.95 8 16 60 271 -003 122105 18 -15-16-17 000 84 15 12 -20.2 -20.7 28.96 9 17 59 270 -005 121108 31 -15-16-17 000 85 15 13 -18.6 -19.1 28.96 7 16 67 278 -002 119116 73 -14-16-16 000 86 15 14 -18.7 -19.2 28.96 9 16 73 284 000 119115 78 -14-15-14 000 87 15 15 -17.7 -18.2 28.95 9 16 81 292 -001 118100 79 -14-14-13 000 88 15 16 -16.5 -17.3 28.95 9 18 81 292 -003 112 97 76 -13-13-13 000 89 15 17 -15.8 -17.3 28.95 10 17 76 287 -001 103 99 70 -14-14-13 000 90 15 18 -15.7 -17.4 28.95 9 14 68 279 000 101103 68 -14-14-14 000 91 15 19 -15.4 -16.6 28.95 7 11 67 278 000 105 96 70 -15-13-13 000 92 15 20 -15.0 -16.7 28.95 7 11 57 268 001 100 79 71 -15-14-14 000 93 15 21 -14.7 -17.0 28.94 8 12 52 263 000 94 79 80 -15-15-14 000 94 15 22 -14.6 -17.0 28.94 10 16 55 266 -002 93 92 58 -15-16-16 000 95 15 23 -14.3 -17.1 28.93 12 19 58 269 -002 89 86 38 -15-15-16 000 96 16 00 -15.3 -17.3 28.92 14 21 50 261 -004 98 99 42 -15-15-16 000 97 16 01 -15.4 -17.2 28.92 15 22 45 256 -007 100103 34 -15-16-16 000 98 16 02 -15.5 -17.0 28.91 13 20 48 259 -006 103102 28 -15-16-16 000 99 16 03 -15.8 -16.7 28.90 11 17 56 267 -006 110 79 27 -15-15-16 000 100 16 04 -16.1 -16.5 28.89 10 16 63 274 -006 116 80 31 -14-15-16 000 101 16 05 -16.9 -17.4 28.88 8 13 70 281 -003 117 82 42 -14-15-15 000 102 16 06 -17.8 -18.3 28.87 7 12 78 289 001 118 90 76 -14-15-15 000 103 16 07 -18.4 -19.0 28.87 6 10 91 302 001 118 84 78 -14-14-15 000 104 16 08 -18.6 -19.3 28.86 6 9 110 321 001 114 80 76 -13-14-15 000 105 16 09 -18.8 -19.5 28.84 6 10 125 336 000 113 74 72 -14-14-14 000 106 16 10 -18.9 -19.9 28.82 5 9 130 341 000 110 81 69 -14-14-14 000 107 16 11 -18.9 -19.3 28.80 5 8 125 336 001 115 87 73 -14-14-14 000 108 16 12 -19.6 -19.9 28.79 5 7 105 316 000 119 79 66 -14-14-14 000 109 16 13 -19.8 -20.4 28.78 6 7 79 290 000 118 77 37 -14-14-14 000 110 16 14 -19.7 -21.7 28.77 7 9 58 269 000 101 86 42 -14-13-14 000 111 16 15 -19.0 -20.9 28.75 8 10 58 269 000 102 88 39 -14-14-14 000 112 16 16 -18.4 -19.9 28.74 7 10 57 268 001 107 75 31 -14-14-14 000 113 16 17 -17.9 -18.4 28.74 7 10 52 263 000 118 74 42 -14-14-14 000 114 16 18 -17.2 -18.0 28.73 6 10 45 256 001 113 76 47 -14-14-15 000 115 16 19 -16.4 -18.2 28.73 6 9 37 248 001 101 77 33 -15-15-14 000 116 16 20 -15.8 -18.2 28.73 5 7 39 250 001 93 74 29 -15-14-14 000 117 16 21 -15.2 -17.9 28.73 4 6 41 252 004 91 67 25 -14-14-14 000 118 16 22 -14.8 -17.6 28.72 3 5 39 250 004 89 62 25 -14-14-14 000 119 16 23 -14.6 -17.5 28.72 3 4 39 250 003 88 60 25 -14-14-14 000 120 17 00 -14.5 -17.3 28.71 2 4 38 249 000 88 60 26 -14-14-14 000 * 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.