USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-01-30/00 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 30 00 -13.0 -18.6 28.66 6 7 65 276 000 48 31 31 -11-11-10 000 1 30 01 -13.6 -18.2 28.66 7 10 60 271 000 71 28 33 -11-10-10 000 2 30 02 -13.9 -18.5 28.67 7 12 61 272 000 70 30 34 -10 -9-10 000 3 30 03 -13.9 -19.0 28.65 8 13 61 272 001 67 38 36 -9 -9-10 000 4 30 04 -14.0 -18.4 28.65 9 14 58 269 000 72 45 40 -9 -9 -9 000 5 30 05 -14.2 -17.8 28.66 9 15 59 270 000 80 49 42 -9 -9 -9 000 6 30 06 -14.4 -16.9 28.65 9 15 56 267 000 91 51 45 -9 -8 -9 000 7 30 07 -14.5 -16.2 28.64 9 15 57 268 000 99 57 47 -9 -8 -9 000 8 30 08 -14.3 -15.7 28.65 9 14 54 265 000 103 68 52 -8 -8 -9 000 9 30 09 -14.1 -15.0 28.65 9 14 54 265 000 108 75 60 -8 -8 -9 000 10 30 10 -13.9 -14.3 28.65 9 13 53 264 000 113 79 70 -8 -8 -9 000 11 30 11 -13.9 -14.3 28.65 8 13 53 264 000 113 80 78 -8 -8 -8 000 12 30 12 -13.0 -13.4 28.66 8 14 55 266 000 113 82 84 -8 -8 -8 000 13 30 13 -12.5 -12.8 28.65 8 14 53 264 000 112 82 91 -8 -8 -8 000 14 30 14 -11.9 -12.3 28.65 8 14 48 259 000 112 91 96 -8 -8 -8 000 15 30 15 -11.4 -11.7 28.66 8 14 44 255 000 111 97 99 -8 -8 -8 000 16 30 16 -10.3 -10.6 28.67 8 14 39 250 000 110 98 99 -8 -8 -8 001 17 30 17 -9.0 -9.3 28.68 8 12 32 243 000 108102100 -8 -8 -9 002 18 30 18 -8.0 -8.5 28.68 8 11 25 236 000 104101101 -8 -8 -9 004 19 30 19 -7.3 -7.9 28.69 8 10 20 231 000 103100101 -8 -8 -8 007 20 30 20 -7.1 -7.6 28.70 8 9 14 225 000 102 97101 -8 -8 -8 006 21 30 21 -6.8 -7.5 28.70 7 9 9 220 000 101 96102 -8 -8 -8 005 22 30 22 -6.5 -7.3 28.71 7 9 12 223 000 100 95101 -7 -8 -8 005 23 30 23 -6.3 -7.1 28.71 7 9 12 223 000 99 96100 -7 -8 -8 006 24 31 00 -6.2 -7.1 28.72 8 10 13 224 000 99 99 98 -7 -8 -8 006 25 31 01 -6.2 -7.0 28.73 9 11 13 224 000 100101 98 -7 -8 -8 006 26 31 02 -6.5 -7.0 28.76 9 12 13 224 000 102107 94 -7 -8 -9 005 27 31 03 -6.1 -6.8 28.76 10 12 8 219 001 101108100 -7 -8 -9 004 28 31 04 -6.8 -7.2 28.76 10 12 359 210 001 103103100 -8 -8 -9 004 29 31 05 -7.3 -7.6 28.78 9 14 4 215 002 105104100 -7 -8 -9 003 30 31 06 -6.5 -7.1 28.79 11 16 7 218 001 101103 97 -7 -8 -9 003 31 31 07 -6.5 -6.9 28.80 12 16 7 218 000 104101 94 -7 -8 -9 003 32 31 08 -6.1 -6.4 28.81 13 18 2 213 000 104106 91 -7 -7 -9 006 33 31 09 -5.9 -6.1 28.83 14 20 358 209 000 105106 96 -6 -7 -9 009 34 31 10 -6.0 -6.3 28.83 15 21 357 208 000 103108 94 -7 -7 -8 011 35 31 11 -6.1 -6.4 28.85 16 22 354 205 -001 104108101 -7 -8 -9 012 36 31 12 -6.2 -6.5 28.86 17 24 350 201 000 104108101 -7 -8 -8 013 37 31 13 -6.3 -6.7 28.88 17 24 345 196 000 103108 98 -7 -8 -8 019 38 31 14 -6.5 -6.9 28.89 16 23 340 191 -001 104106100 -7 -8 -7 010 39 31 15 -6.7 -7.1 28.91 14 20 339 190 -001 104107 97 -7 -8 -7 004 40 31 16 -6.7 -7.2 28.92 13 19 344 195 -001 102101 98 -7 -7 -7 005 41 31 17 -6.6 -7.2 28.94 12 18 346 197 -001 102102 98 -7 -8 -7 010 42 31 18 -6.6 -7.3 28.96 11 18 351 202 -001 101101 94 -7 -7 -7 006 43 31 19 -6.5 -7.2 28.96 12 20 356 207 000 100 94 92 -7 -7 -7 009 44 31 20 -6.4 -7.2 28.97 12 18 358 209 000 99 93 93 -7 -7 -7 008 45 31 21 -6.4 -7.4 28.99 11 16 0 211 001 98 90 92 -7 -7 -8 003 46 31 22 -6.5 -7.6 29.00 10 14 3 214 002 98 91 91 -7 -7 -8 000 47 31 23 -6.5 -7.7 29.00 9 12 6 217 002 97 89 91 -7 -7 -8 000 48 01 00 -6.5 -7.5 29.01 8 11 15 226 004 98 90 92 -6 -7 -7 001 49 01 01 -6.6 -7.5 29.02 8 10 25 236 004 99 90 87 -6 -7 -7 000 50 01 02 -7.0 -7.6 29.01 7 9 35 246 002 102 89 91 -6 -7 -7 000 51 01 03 -7.3 -7.6 29.02 7 10 42 253 000 106 90 88 -6 -7 -8 000 52 01 04 -8.0 -8.2 29.02 7 12 47 258 -001 108 97 83 -6 -7 -8 000 53 01 05 -8.9 -9.1 29.01 8 13 50 261 -002 109 95 81 -6 -7 -8 000 54 01 06 -7.3 -7.4 29.01 12 18 44 255 -003 107 99 85 -8 -7 -7 000 55 01 07 -7.3 -7.4 29.00 12 17 43 254 -003 107 82 90 -7 -7 -7 000 56 01 08 -8.5 -8.7 28.99 11 16 38 249 -005 108 82 81 -6 -7 -7 000 57 01 09 -9.1 -9.4 28.99 11 16 35 246 -005 109 76 88 -6 -6 -7 000 58 01 10 -9.3 -9.5 28.99 10 15 38 249 -005 109 73 94 -6 -6 -6 000 59 01 11 -10.0 -10.2 28.98 8 15 44 255 -003 110 75 97 -5 -6 -7 000 60 01 12 -10.1 -10.5 28.98 8 15 43 254 -004 108 78 95 -5 -6 -7 000 61 01 13 -9.7 -10.1 28.97 9 16 44 255 -004 107 76103 -5 -6 -6 000 62 01 14 -9.1 -9.4 28.97 10 16 36 247 -006 108 84102 -6 -6 -7 002 63 01 15 -9.1 -9.3 28.97 11 16 30 241 -004 109 94 94 -6 -7 -7 001 64 01 16 -8.1 -8.9 28.96 10 15 26 237 -009 101102105 -6 -7 -7 006 65 01 17 -7.8 -8.4 28.94 14 19 19 230 -003 103108 93 -7 -8 -8 011 66 01 18 -7.4 -7.6 28.93 14 21 13 224 -003 107108 82 -7 -8 -9 001 67 01 19 -7.0 -7.1 28.92 15 23 11 222 -001 107108 83 -7 -8 -8 002 68 01 20 -6.5 -6.6 28.91 18 25 2 213 -008 106106 86 -7 -7 -7 004 69 01 21 -6.0 -6.1 28.92 17 24 357 208 -002 106108 87 -7 -8 -8 001 70 01 22 -5.5 -5.9 28.92 15 21 357 208 000 103108 88 -6 -8 -8 004 71 01 23 -5.2 -5.7 28.91 15 20 358 209 000 102108 89 -6 -7 -8 002 72 02 00 -5.2 -5.9 28.91 15 19 350 201 -001 100104 94 -6 -7 -7 001 73 02 01 -5.2 -5.5 28.90 15 18 348 199 -004 103106 90 -6 -7 -7 001 74 02 02 -5.2 -5.4 28.89 14 16 347 198 -001 104107 89 -6 -7 -7 000 75 02 03 -5.0 -5.8 28.88 10 12 340 191 -005 97107100 -6 -7 -8 001 76 02 04 -5.2 -5.5 28.87 8 10 350 201 000 103103112 -6 -7 -8 004 77 02 05 -5.3 -5.4 28.86 9 12 344 195 -001 105107112 -6 -7 -8 006 78 02 06 -5.7 -5.8 28.86 9 12 350 201 -003 105108112 -6 -7 -8 003 79 02 07 -5.7 -6.2 28.86 8 13 339 190 001 102105113 -6 -8 -9 006 80 02 08 -6.2 -6.3 28.85 7 13 345 196 -002 106 90113 -7 -7 -9 000 81 02 09 -5.9 -6.7 28.85 5 10 339 190 000 100 97113 -6 -8 -9 000 82 02 10 -6.3 -6.5 28.86 6 11 3 214 -002 106104112 -7 -7 -9 000 83 02 11 -6.4 -6.5 28.86 6 13 0 211 000 106 94111 -6 -7 -8 000 84 02 12 -6.4 -6.5 28.85 5 8 14 225 -001 106 90106 -6 -7 -8 000 85 02 13 -6.4 -6.6 28.86 7 8 36 247 -001 106 93102 -6 -7 -8 000 86 02 14 -7.0 -7.1 28.85 5 10 43 254 000 107 91105 -6 -7 -8 000 87 02 15 -5.8 -6.7 28.85 6 7 54 265 000 98 86104 -6 -6 -7 003 88 02 16 -5.5 -6.5 28.85 7 9 68 279 -005 97 98104 -6 -7 -7 005 89 02 17 -5.2 -6.2 28.84 7 11 93 304 001 97104108 -6 -6 -7 026 90 02 18 -4.4 -5.1 28.83 8 11 84 295 -001 98106105 -5 -5 -6 008 91 02 19 -3.6 -4.2 28.83 8 11 70 281 001 98105101 -4 -5 -5 000 92 02 20 -3.2 -3.7 28.83 9 11 63 274 000 99105102 -4 -5 -5 006 93 02 21 -2.8 -3.3 28.84 8 9 48 259 000 98105105 -4 -5 -5 003 94 02 22 -2.4 -2.6 28.84 8 10 28 239 -001 101105 97 -3 -4 -4 003 95 02 23 -1.8 -2.3 28.84 10 12 20 231 -004 98104 99 -3 -4 -4 008 96 03 00 -1.8 -2.0 28.84 11 14 2 213 -003 99104107 -3 -4 -4 021 97 03 01 -2.3 -2.5 28.85 14 19 344 195 -001 101104107 -3 -4 -5 027 98 03 02 -2.5 -3.0 28.85 13 19 342 193 -002 98105 99 -3 -4 -5 012 99 03 03 -2.7 -2.8 28.85 11 16 354 205 001 102104103 -3 -4 -5 006 100 03 04 -2.8 -2.8 28.85 12 17 11 222 -006 102103103 -3 -4 -5 000 101 03 05 -3.7 -3.7 28.85 16 20 357 208 -002 103105 91 -5 -5 -6 000 102 03 06 -4.4 -4.8 28.84 14 20 4 215 -004 101106 63 -5 -6 -7 000 103 03 07 -5.1 -5.2 28.83 16 21 7 218 -003 105 95 61 -5 -6 -7 000 104 03 08 -5.9 -6.0 28.83 14 21 13 224 000 106 92 60 -5 -6 -6 000 105 03 09 -6.7 -6.9 28.83 13 20 14 225 000 106 85 63 -5 -6 -7 000 106 03 10 -9.0 -9.3 28.82 9 18 25 236 000 109 82 64 -5 -6 -6 000 107 03 11 -9.6 -9.9 28.80 8 16 40 251 000 109 73 64 -5 -5 -6 000 108 03 12 -9.8 -10.1 28.79 8 12 51 262 001 109 62 72 -4 -5 -6 000 109 03 13 -9.4 -9.8 28.77 8 11 66 277 000 108 72 76 -4 -5 -6 000 110 03 14 -8.7 -9.7 28.74 8 13 81 292 001 100 68 82 -4 -5 -6 000 111 03 15 -8.3 -9.4 28.71 9 16 96 307 002 98 68 79 -4 -5 -6 000 112 03 16 -7.8 -9.1 28.67 9 17 109 320 001 97 65 76 -4 -5 -6 000 113 03 17 -7.4 -9.3 28.64 9 19 121 332 000 90 70 66 -4 -5 -6 000 114 03 18 -7.1 -9.2 28.61 10 21 126 337 000 87 63 67 -4 -5 -6 000 115 03 19 -6.4 -8.7 28.56 14 27 139 350 000 86 68 54 -5 -5 -6 000 116 03 20 -6.2 -8.1 28.53 16 27 148 359 001 89 61 52 -5 -4 -5 000 117 03 21 -7.0 -8.2 28.50 15 25 150 1 -006 96 66 53 -5 -4 -4 000 118 03 22 -7.6 -8.7 28.48 13 22 158 9 -001 99 64 50 -5 -4 -4 000 119 03 23 -7.7 -8.4 28.45 11 17 177 28 -007 102 59 51 -4 -3 -4 000 120 04 00 -7.7 -7.9 28.43 11 15 183 34 -004 106 57 52 -6 -3 -4 000 * 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.