USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2025-09-26/12 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 26 12 -32.4 -35.8 28.50 12 14 33 244 -001 96 80 61 -26-22-21 000 1 26 13 -35.2 -36.9 28.51 15 22 35 246 -003 123 83 60 -25-22-21 000 2 26 14 -34.7 -36.3 28.51 15 24 39 250 -003 124 83 60 -26-22-21 000 3 26 15 -34.6 -35.9 28.51 16 24 37 248 -003 127 80 60 -26-22-21 000 4 26 16 -34.5 -35.7 28.53 15 23 36 247 -006 130 76 58 -26-22-21 000 5 26 17 -34.5 -35.7 28.54 15 22 34 245 -008 130 67 58 -25-22-21 000 6 26 18 -34.4 -35.7 28.55 14 21 34 245 -010 128 57 58 -25-22-21 000 7 26 19 -33.8 -35.0 28.55 13 21 36 247 -009 128 58 61 -25-22-21 000 8 26 20 -33.3 -34.6 28.54 13 20 37 248 -009 127 64 64 -24-22-21 000 9 26 21 -32.4 -33.7 28.55 14 22 38 249 -010 126 74 67 -25-22-21 000 10 26 22 -31.7 -33.1 28.55 15 22 36 247 -011 123 87 69 -25-22-21 000 11 26 23 -31.5 -32.9 28.57 14 21 39 250 -012 124100 73 -25-23-21 000 12 27 00 -31.5 -32.7 28.57 13 20 42 253 -013 126113 72 -26-23-22 000 13 27 01 -31.6 -32.7 28.58 12 20 45 256 -009 127118 60 -26-23-22 000 14 27 02 -32.0 -33.3 28.57 13 21 43 254 -009 124116 57 -26-23-22 000 15 27 03 -32.1 -33.2 28.59 13 22 39 250 -008 128109 49 -26-23-21 000 16 27 04 -32.0 -32.7 28.59 14 23 34 245 -012 134 84 43 -26-22-20 000 17 27 05 -32.3 -32.8 28.60 14 22 32 243 -014 136 69 43 -25-22-20 000 18 27 06 -32.4 -33.0 28.60 13 21 31 242 -015 136 67 47 -25-22-20 000 19 27 07 -32.5 -33.1 28.60 13 20 35 246 -014 136 66 50 -25-21-19 000 20 27 08 -31.7 -32.3 28.60 13 20 26 237 -012 135 59 50 -24-20-18 000 21 27 09 -31.7 -32.3 28.60 13 20 24 235 -009 135 63 49 -24-20-18 000 22 27 10 -32.1 -32.7 28.61 12 19 24 235 -012 136 61 49 -25-21-18 000 23 27 11 -32.3 -32.9 28.62 11 16 26 237 -011 136 62 50 -25-21-19 000 24 27 12 -32.2 -32.8 28.63 10 15 24 235 -008 136 67 53 -24-21-19 000 25 27 13 -31.8 -32.4 28.65 10 15 24 235 -006 135 89 51 -23-20-19 000 26 27 14 -31.8 -32.4 28.66 10 15 30 241 -003 135 99 52 -24-21-18 000 27 27 15 -31.7 -32.3 28.66 10 16 22 233 -004 135 93 59 -23-20-19 000 28 27 16 -31.8 -32.4 28.66 10 15 25 236 -005 135 95 63 -23-21-19 000 29 27 17 -31.7 -32.4 28.67 10 15 27 238 000 135102 69 -23-21-20 000 30 27 18 -31.6 -32.3 28.69 9 14 26 237 -002 135107 70 -23-21-20 000 31 27 19 -30.9 -31.6 28.71 10 15 28 239 -005 134107 75 -23-21-20 000 32 27 20 -30.2 -30.8 28.71 10 16 34 245 -005 133109 73 -22-21-19 000 33 27 21 -29.4 -30.1 28.71 10 16 36 247 -006 132104 84 -22-21-19 000 34 27 22 -29.2 -29.7 28.71 11 16 34 245 -006 132102 86 -22-20-18 000 35 27 23 -29.0 -29.6 28.72 11 15 34 245 -007 132 81 87 -21-19-18 000 36 28 00 -28.9 -29.5 28.74 11 15 35 246 -010 132 62 64 -21-18-17 000 37 28 01 -28.8 -29.4 28.75 11 16 33 244 -010 132 43 64 -20-17-17 000 38 28 02 -28.5 -29.1 28.76 12 16 33 244 -010 131 29 67 -20-17-17 000 39 28 03 -28.5 -29.1 28.76 12 16 38 249 -010 131 28 72 -19-17-17 000 40 28 04 -28.6 -29.1 28.76 11 16 41 252 -010 131 32 75 -19-17-17 000 41 28 05 -28.8 -29.3 28.76 11 15 44 255 -009 131 39 73 -18-17-17 000 42 28 06 -28.7 -29.3 28.77 11 15 46 257 -009 131 36 57 -18-17-17 000 43 28 07 -28.5 -29.1 28.77 10 13 50 261 -008 130 30 43 -18-17-17 000 44 28 08 -28.5 -29.0 28.78 9 12 51 262 -007 129 25 43 -18-17-17 000 45 28 09 -27.8 -28.2 28.77 9 11 54 265 -006 127 22 47 -18-17-17 000 46 28 10 -27.4 -28.0 28.78 9 10 55 266 -003 122 30 53 -18-17-17 000 47 28 11 -27.2 -28.1 28.78 9 11 57 268 001 118 45 64 -17-17-17 000 48 28 12 -26.9 -28.2 28.78 9 11 62 273 004 111 62 72 -17-17-18 000 49 28 13 -26.4 -28.3 28.78 8 10 68 279 002 103 44 76 -16-17-18 000 50 28 14 -25.7 -28.5 28.78 8 9 77 288 000 91 46 78 -16-17-18 000 51 28 15 -25.4 -28.9 28.78 7 9 81 292 001 84 50 73 -16-17-18 000 52 28 16 -25.9 -28.8 28.78 7 9 90 301 002 92 44 67 -16-17-18 000 53 28 17 -25.4 -26.4 28.78 7 9 101 312 002 113 52 61 -16-17-17 000 54 28 18 -24.8 -25.5 28.77 7 10 110 321 001 117 60 61 -16-16-17 000 55 28 19 -24.1 -26.1 28.76 6 9 121 332 002 102 64 58 -16-16-16 000 56 28 20 -22.7 -26.1 28.75 5 8 134 345 002 87 63 58 -15-16-16 000 57 28 21 -22.1 -26.1 28.74 5 9 159 10 001 83 56 55 -15-15-16 000 58 28 22 -23.7 -27.5 28.74 6 11 192 43 003 84 51 54 -15-15-15 000 59 28 23 -24.3 -28.0 28.73 7 12 208 59 002 84 48 52 -15-15-15 000 60 29 00 -24.8 -28.7 28.74 7 12 208 59 001 82 53 54 -15-14-15 000 61 29 01 -25.1 -29.0 28.73 7 12 215 66 001 82 56 55 -15-15-14 000 62 29 02 -24.8 -28.8 28.73 7 13 222 73 001 81 47 47 -15-14-14 000 63 29 03 -24.5 -28.1 28.72 7 12 229 80 000 85 47 44 -15-14-13 000 64 29 04 -24.6 -27.8 28.71 8 13 236 87 000 88 51 41 -15-13-13 000 65 29 05 -24.9 -27.8 28.71 8 13 240 91 001 92 47 39 -14-13-13 000 66 29 06 -25.0 -27.7 28.71 9 14 243 94 000 94 43 34 -14-13-12 000 67 29 07 -24.9 -27.3 28.72 8 13 239 90 002 97 43 32 -14-13-12 000 68 29 08 -25.0 -27.2 28.72 8 13 236 87 000 99 43 32 -14-13-12 000 69 29 09 -24.6 -26.9 28.73 7 12 235 86 001 98 43 34 -14-13-12 000 70 29 10 -23.6 -26.5 28.73 7 11 238 89 002 91 41 43 -14-12-12 000 71 29 11 -23.0 -26.2 28.73 7 11 233 84 000 88 39 56 -13-12-12 000 72 29 12 -23.8 -26.4 28.73 7 11 228 79 001 94 36 67 -13-12-11 000 73 29 13 -24.4 -26.5 28.74 6 11 221 72 000 101 36 68 -14-12-11 000 74 29 14 -24.9 -26.8 28.74 6 11 212 64 000 106 44 66 -14-12-11 000 75 29 15 -25.0 -26.8 28.74 5 9 194 45 -002 108 57 65 -14-12-11 000 76 29 16 -23.5 -25.9 28.74 3 7 191 42 000 101 61 64 -14-12-12 000 77 29 17 -22.9 -25.7 28.73 4 9 203 54 -002 96 73 66 -14-13-11 000 78 29 18 -23.1 -25.7 28.73 3 7 218 69 000 97 73 57 -17-13-12 000 79 29 19 -24.0 -26.0 28.72 4 6 217 68 001 104 66 67 -16-14-12 000 80 29 20 -24.1 -26.1 28.72 2 4 189 40 000 105 63 60 -17-14-12 000 81 29 21 -24.2 -26.1 28.72 0 3 159 10 000 106 66 61 -17-14-12 000 82 29 22 -24.4 -25.8 28.72 3 4 39 250 000 111 70 59 -17-14-11 000 83 29 23 -26.8 -27.7 28.72 5 5 44 255 000 127 66 59 -17-13-10 000 84 30 00 -26.6 -28.3 28.72 5 5 41 252 002 115 61 59 -16-12-10 000 85 30 01 -25.9 -27.8 28.72 5 8 66 277 000 108 55 58 -16-11 -9 000 86 30 02 -25.8 -27.6 28.71 7 10 84 295 001 109 52 54 -15-11-10 000 87 30 03 -25.1 -27.1 28.71 9 12 72 283 -002 108 49 58 -14-10 -9 000 88 30 04 -25.5 -27.0 28.70 10 18 72 283 000 114 45 52 -13-10 -9 000 89 30 05 -24.9 -26.7 28.70 14 27 68 279 000 109 41 52 -13 -9 -9 000 90 30 06 -23.7 -25.4 28.71 15 27 69 280 003 110 38 52 -14 -9 -9 000 91 30 07 -23.1 -24.8 28.71 14 26 72 283 003 108 34 52 -14-11 -9 000 92 30 08 -23.9 -26.0 28.70 13 25 81 292 004 104 32 50 -14-10 -9 000 93 30 09 -23.8 -26.6 28.69 14 32 90 301 003 97 32 41 -12-10 -9 000 94 30 10 -22.8 -27.0 28.68 16 34 101 312 001 81 30 26 -12-10-10 000 95 30 11 -23.3 -27.5 28.68 16 32 105 316 000 82 31 25 -14-11-10 000 96 30 12 -24.4 -28.0 28.67 14 32 110 321 000 88 33 22 -14-12-11 000 97 30 13 -25.3 -28.4 28.65 14 29 109 320 -003 94 36 24 -13-12-11 000 98 30 14 -26.5 -29.0 28.64 11 26 104 315 002 102 44 26 -12-12-12 000 99 30 15 -26.0 -28.6 28.62 14 28 103 314 -002 100 46 27 -11-11-11 000 100 30 16 -26.1 -28.6 28.61 14 26 110 321 -006 103 45 28 -12-11-11 000 101 30 17 -27.3 -29.0 28.59 11 28 118 329 -003 114 46 30 -11 -9-10 000 102 30 18 -26.0 -28.2 28.58 13 25 111 322 002 107 43 35 -13-10 -9 000 103 30 19 -25.8 -27.8 28.58 14 28 106 317 002 108 44 41 -14-10-10 000 104 30 20 -24.0 -26.8 28.57 15 27 101 312 005 97 44 46 -14 -9 -9 000 105 30 21 -23.2 -26.0 28.57 16 25 95 306 -001 96 48 51 -14-10-10 000 106 30 22 -23.6 -24.8 28.58 15 27 85 296 002 115 52 51 -16-11-10 000 107 30 23 -24.6 -25.7 28.57 14 25 74 285 001 119 63 52 -18-12-11 000 108 01 00 -25.2 -26.6 28.57 14 22 71 282 005 116 58 58 -17-13-11 000 109 01 01 -25.6 -26.8 28.57 15 24 71 282 -002 118 60 50 -18-14-12 000 110 01 02 -25.6 -26.9 28.58 16 26 69 280 002 117 54 48 -18-14-12 000 111 01 03 -25.2 -26.8 28.58 16 26 73 284 000 112 48 47 -16-13-11 000 112 01 04 -24.6 -26.4 28.59 17 27 67 278 001 109 47 46 -14-10-10 000 113 01 05 -24.2 -25.8 28.59 16 27 67 278 -004 112 46 38 -13-10 -9 000 114 01 06 -23.2 -24.7 28.60 15 27 61 272 -001 111 43 34 -11 -9 -9 000 115 01 07 -23.0 -24.0 28.61 14 25 60 271 -002 118 42 33 -10 -9 -8 000 116 01 08 -22.1 -22.5 28.61 13 23 64 275 -002 123 40 39 -10 -8 -8 000 117 01 09 -20.7 -21.1 28.61 13 23 63 274 -002 121 38 32 -9 -8 -7 000 118 01 10 -20.3 -20.7 28.62 13 22 59 270 -001 120 34 34 -9 -7 -6 000 119 01 11 -20.3 -21.3 28.63 11 19 67 278 -003 113 35 46 -9 -7 -6 000 120 01 12 -19.8 -22.2 28.63 10 15 65 276 -010 94 31 38 -8 -7 -7 000 * 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.