USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2025-09-29/12 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 29 12 -16.0 -20.1 28.75 10 19 71 282 -001 67 52 45 -11-10 -9 000 1 29 13 -18.1 -19.9 28.77 14 24 64 275 -002 101 53 46 -12-10-10 000 2 29 14 -19.2 -20.8 28.79 17 28 63 274 001 105 47 42 -13-11-10 000 3 29 15 -19.5 -21.3 28.80 18 28 62 273 -003 103 40 36 -14-12-11 000 4 29 16 -20.8 -23.8 28.80 17 27 63 274 -003 92 33 24 -14-12-11 000 5 29 17 -21.1 -25.0 28.80 18 31 67 278 000 83 29 19 -14-11-11 000 6 29 18 -21.2 -25.5 28.80 18 29 73 284 000 80 26 18 -13-11-11 000 7 29 19 -21.0 -25.4 28.81 18 28 74 285 001 79 20 18 -11-10-11 000 8 29 20 -21.0 -25.1 28.79 17 27 75 286 007 81 27 26 -11-10-10 000 9 29 21 -20.8 -24.4 28.83 19 28 68 279 007 86 24 27 -11-10-10 000 10 29 22 -20.6 -24.0 28.80 17 25 68 279 007 88 32 28 -11-10-10 000 11 29 23 -20.2 -23.5 28.83 15 25 74 285 004 89 34 29 -10-10-10 000 12 30 00 -19.8 -22.8 28.82 15 26 74 285 000 91 31 35 -10-10 -9 000 13 30 01 -17.8 -20.7 28.80 17 29 75 286 000 91 36 42 -11 -9 -9 000 14 30 02 -17.5 -20.1 28.80 17 29 74 285 -003 93 39 42 -12-10-10 000 15 30 03 -17.8 -20.1 28.81 16 28 77 288 000 96 39 41 -11-10-10 000 16 30 04 -18.0 -20.3 28.79 17 30 76 287 001 96 36 31 -11 -9 -9 000 17 30 05 -17.7 -20.3 28.78 19 32 71 282 003 93 28 31 -10 -8 -8 000 18 30 06 -17.7 -20.1 28.77 18 31 68 279 004 96 30 29 -10 -8 -8 000 19 30 07 -17.8 -20.1 28.77 19 30 68 279 004 97 32 36 -10 -8 -8 000 20 30 08 -18.6 -20.5 28.77 17 28 64 275 005 101 34 34 -10 -9 -8 000 21 30 09 -19.1 -20.8 28.76 16 27 61 272 -001 103 35 46 -9 -8 -8 000 22 30 10 -19.6 -21.2 28.75 15 26 65 276 -005 105 38 47 -8 -8 -8 000 23 30 11 -19.3 -21.5 28.73 15 26 72 283 002 98 41 45 -8 -8 -8 000 24 30 12 -19.3 -21.9 28.72 14 25 71 282 -001 95 38 48 -8 -8 -8 000 25 30 13 -19.6 -22.2 28.73 14 24 75 286 -001 94 38 53 -8 -8 -8 000 26 30 14 -19.5 -22.2 28.72 13 24 79 290 000 94 38 46 -8 -8 -8 000 27 30 15 -19.7 -22.1 28.71 14 24 78 289 -001 97 37 50 -8 -8 -8 000 28 30 16 -19.8 -22.0 28.70 14 25 72 283 -002 99 35 48 -8 -7 -7 000 29 30 17 -18.0 -21.8 28.68 15 25 71 282 -003 82 36 47 -7 -7 -8 000 30 30 18 -17.7 -21.6 28.68 13 23 73 284 -002 80 38 50 -7 -7 -8 000 31 30 19 -18.0 -21.4 28.68 12 21 70 281 -003 84 36 46 -6 -7 -7 000 32 30 20 -17.9 -21.1 28.68 12 20 65 276 001 87 35 41 -6 -6 -7 000 33 30 21 -17.9 -21.0 28.67 10 18 61 272 -001 87 38 42 -7 -6 -7 000 34 30 22 -17.2 -21.1 28.66 10 18 61 272 004 79 41 46 -8 -7 -7 000 35 30 23 -16.1 -20.8 28.66 9 14 62 273 005 69 40 48 -8 -7 -7 000 36 01 00 -16.1 -20.4 28.67 9 14 59 270 015 74 39 49 -9 -7 -7 000 37 01 01 -21.3 -21.8 28.67 3 7 172 23 008 122 43 47 -9 -8 -8 000 38 01 02 -20.7 -21.6 28.67 3 12 137 348 012 113 44 48 -9 -9 -8 000 39 01 03 -19.3 -22.4 28.67 8 12 70 281 003 85 43 50 -9 -8 -8 000 40 01 04 -19.8 -22.7 28.67 8 11 60 271 001 88 43 52 -9 -8 -8 000 41 01 05 -19.9 -23.1 28.66 8 10 65 276 001 85 46 48 -9 -9 -9 000 42 01 06 -20.2 -23.4 28.67 7 7 66 277 -004 85 48 46 -10-10 -9 000 43 01 07 -20.8 -22.6 28.67 3 9 151 3 001 102 47 54 -13 -9 -8 000 44 01 08 -21.5 -22.8 28.68 5 12 159 10 000 108 46 53 -12 -9 -9 000 45 01 09 -22.9 -23.2 28.67 6 13 187 38 002 121 42 49 -13 -9 -9 000 46 01 10 -23.7 -24.0 28.67 6 13 197 48 000 123 41 53 -14-10-10 000 47 01 11 -24.2 -24.7 28.68 6 12 208 59 000 124 42 50 -14-11-10 000 48 01 12 -23.8 -24.1 28.68 6 11 203 54 -002 123 44 48 -13-11-10 000 49 01 13 -23.7 -23.9 28.68 5 11 193 44 -001 124 44 49 -14-12-11 000 50 01 14 -23.4 -23.5 28.69 3 8 191 42 000 124 49 49 -14-12-11 000 51 01 15 -22.8 -22.8 28.70 3 7 218 69 001 123 57 48 -15-13-12 000 52 01 16 -21.6 -22.1 28.71 5 10 226 77 000 116 54 48 -14-13-11 000 53 01 17 -22.3 -23.0 28.71 6 12 216 67 -002 116 53 49 -15-13-11 000 54 01 18 -22.1 -22.9 28.71 5 11 208 59 000 117 56 51 -15-13-11 000 55 01 19 -22.0 -22.6 28.71 5 9 211 62 -002 119 58 53 -15-14-11 000 56 01 20 -22.1 -22.8 28.72 5 10 223 74 -002 119 58 55 -16-14-12 000 57 01 21 -22.5 -23.0 28.73 5 8 242 93 -001 123 62 56 -16-14-13 000 58 01 22 -22.9 -23.5 28.74 6 8 257 108 000 123 65 57 -16-15-13 000 59 01 23 -22.8 -24.1 28.75 8 12 267 118 000 115 65 57 -16-15-13 000 60 02 00 -22.5 -23.4 28.76 9 15 270 121 001 119 67 58 -16-15-13 000 61 02 01 -22.9 -23.4 28.78 9 16 277 128 000 124 66 59 -17-15-14 000 62 02 02 -22.9 -23.5 28.79 10 17 286 137 000 123 67 58 -16-15-15 000 63 02 03 -23.2 -23.8 28.79 10 20 295 146 000 124 80 61 -16-15-14 000 64 02 04 -23.3 -23.8 28.80 12 22 298 149 000 124 91 65 -16-15-15 000 65 02 05 -23.6 -24.1 28.81 12 23 302 153 000 125 91 69 -17-15-15 000 66 02 06 -24.3 -24.8 28.83 13 23 311 162 000 126 92 69 -17-15-14 000 67 02 07 -25.2 -25.7 28.85 12 22 314 166 000 127 95 67 -18-16-15 000 68 02 08 -24.2 -24.7 28.88 13 22 311 162 000 126 94 63 -19-17-15 000 69 02 09 -21.0 -21.5 28.89 14 22 306 157 000 122 97 61 -21-16-15 000 70 02 10 -20.2 -20.7 28.89 13 21 313 164 000 121121 63 -20-20-14 000 71 02 11 -21.1 -21.5 28.91 12 19 330 181 000 122123 64 -21-21-14 000 72 02 12 -21.1 -21.5 28.92 11 17 334 185 000 122123 57 -21-21-14 000 73 02 13 -20.8 -21.2 28.93 10 19 332 183 000 122123 64 -20-21-16 000 74 02 14 -20.6 -21.4 28.94 9 19 336 187 000 117123 52 -20-21-18 000 75 02 15 -20.8 -21.8 28.95 7 15 355 206 000 115123 53 -20-21-19 000 76 02 16 -20.6 -21.4 28.96 8 14 4 215 000 117123 51 -20-21-20 001 77 02 17 -19.9 -20.5 28.97 9 13 4 215 000 118123 54 -20-21-20 001 78 02 18 -19.4 -20.2 28.97 9 15 12 223 001 115122 57 -19-21-20 001 79 02 19 -19.1 -20.1 28.97 12 17 11 222 000 112122 57 -19-21-19 001 80 02 20 -19.4 -20.4 28.97 14 18 21 232 -001 112122 55 -19-21-20 001 81 02 21 -19.4 -20.5 28.98 14 20 17 228 -005 111122 47 -19-20-20 001 82 02 22 -19.8 -20.7 28.98 14 20 11 222 -001 115122 53 -20-21-18 000 83 02 23 -19.6 -20.4 28.98 13 19 8 219 000 116122 46 -20-20-17 000 84 03 00 -19.5 -20.4 28.98 12 17 10 221 002 114121 49 -19-19-17 000 85 03 01 -19.8 -20.9 28.97 11 15 15 226 000 112116 66 -19-19-16 000 86 03 02 -19.9 -21.0 28.97 10 15 17 228 000 112113 74 -19-19-16 000 87 03 03 -20.0 -21.2 28.96 10 14 18 229 000 111100 86 -20-18-16 000 88 03 04 -20.4 -21.8 28.95 10 14 20 231 -001 109 86 93 -20-17-17 001 89 03 05 -21.1 -22.6 28.93 9 14 24 235 -001 110 85 97 -19-17-18 002 90 03 06 -21.5 -22.9 28.92 9 13 22 233 000 111 89 98 -19-17-18 002 91 03 07 -22.4 -23.8 28.91 9 12 22 233 000 111 93103 -19-17-18 004 92 03 08 -23.3 -24.7 28.90 8 12 19 230 000 114 96101 -19-18-18 004 93 03 09 -23.3 -24.7 28.89 7 11 14 225 000 114100 99 -18-18-18 002 94 03 10 -23.1 -24.7 28.88 6 9 10 221 000 110103100 -18-19-17 003 95 03 11 -23.2 -25.3 28.87 5 7 3 214 000 105101102 -19-19-18 007 96 03 12 -23.0 -25.2 28.85 4 5 349 200 000 103 98103 -19-18-17 005 97 03 13 -22.3 -24.5 28.84 2 5 293 144 000 102101104 -20-18-18 005 98 03 14 -22.2 -24.5 28.82 3 6 228 79 -001 102101102 -20-18-18 008 99 03 15 -22.3 -24.6 28.80 3 5 206 57 000 102101101 -20-19-18 010 100 03 16 -22.3 -24.6 28.78 2 5 197 48 -001 101102101 -20-19-19 007 101 03 17 -22.1 -24.4 28.76 2 5 182 33 -001 100102101 -20-20-19 007 102 03 18 -21.9 -24.3 28.74 3 4 175 26 -001 100100101 -20-20-19 011 103 03 19 -21.9 -24.4 28.73 3 4 178 29 000 100100101 -20-20-19 009 104 03 20 -22.0 -24.5 28.72 3 3 174 25 000 99101102 -20-20-20 007 105 03 21 -22.3 -24.7 28.71 2 2 166 17 -001 100101102 -20-21-20 005 106 03 22 -22.3 -24.8 28.69 2 2 159 10 -001 100103102 -21-21-20 004 107 03 23 -22.2 -24.7 28.68 1 1 131 342 000 99103103 -21-22-21 004 108 04 00 -22.2 -24.8 28.66 1 2 82 293 000 98101104 -22-21-21 005 109 04 01 -22.4 -24.9 28.65 1 2 47 258 000 100100104 -22-21-21 003 110 04 02 -23.8 -25.4 28.64 1 2 38 249 000 108102 93 -22-22-22 000 111 04 03 -25.1 -25.5 28.63 2 2 39 250 000 121106 63 -22-22-22 000 112 04 04 -26.5 -26.5 28.61 4 4 45 256 000 128108 49 -22-22-22 000 113 04 05 -28.4 -28.7 28.60 5 5 35 246 000 130106 53 -23-22-22 000 114 04 06 -29.4 -29.7 28.59 6 7 37 248 001 131104 63 -23-22-22 000 115 04 07 -30.1 -30.6 28.59 7 9 41 252 000 131107 72 -22-22-23 000 116 04 08 -30.4 -30.8 28.58 7 9 48 259 000 132109 79 -22-22-23 000 117 04 09 -30.3 -30.7 28.58 7 8 47 258 000 132109 85 -22-22-23 000 118 04 10 -30.1 -30.3 28.57 6 6 49 260 000 132108 87 -22-22-22 000 119 04 11 -28.9 -28.9 28.56 4 4 53 264 001 131107 92 -22-22-22 000 120 04 12 -28.5 -28.5 28.55 3 6 80 291 000 130107 96 -23-22-22 000 * 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.