USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-05-02/12 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 02 12 -12.9 -17.8 28.39 16 19 65 276 -002 60 34 32 -8 -6 -6 000 1 02 13 -15.4 -18.2 28.39 18 32 66 277 005 89 42 33 -10 -7 -7 000 2 02 14 -14.4 -17.4 28.39 20 33 64 275 014 87 48 34 -9 -8 -8 000 3 02 15 -14.9 -17.4 28.40 20 34 67 278 015 92 48 39 -9 -9 -9 000 4 02 16 -15.1 -17.2 28.41 20 34 60 271 026 96 49 37 -10 -9 -9 000 5 02 17 -15.5 -17.2 28.43 20 33 57 268 021 100 48 33 -11-10-10 000 6 02 18 -15.9 -17.4 28.45 21 32 53 264 014 102 56 34 -12-10-10 000 7 02 19 -16.6 -17.6 28.45 21 30 46 257 016 109 67 44 -13-10-10 000 8 02 20 -15.5 -16.2 28.50 20 30 32 243 012 111112 75 -13-12-12 000 9 02 21 -14.7 -15.2 28.52 20 27 26 237 012 113114 81 -14-13-12 000 10 02 22 -14.9 -15.2 28.56 19 28 21 232 015 115114 60 -14-13-15 000 11 02 23 -15.1 -16.2 28.59 13 22 26 237 012 107107 44 -14-13-15 000 12 03 00 -16.3 -19.1 28.60 14 20 39 250 005 90110 45 -15-14-14 000 13 03 01 -16.1 -18.5 28.63 9 16 50 261 004 95 87 49 -14-13-13 000 14 03 02 -19.6 -21.5 28.66 9 14 71 282 000 103 59 47 -12-12-13 000 15 03 03 -21.0 -22.7 28.69 10 17 75 286 006 106 43 59 -12-12-14 000 16 03 04 -20.0 -23.3 28.69 11 14 85 296 -021 86 43 74 -11-12-13 000 17 03 05 -19.5 -24.0 28.69 9 13 96 307 000 72 45 76 -11-12-13 000 18 03 06 -19.0 -23.6 28.69 9 16 99 310 -003 71 46 90 -11-12-13 000 19 03 07 -19.8 -24.2 28.68 10 18 100 311 -001 72 50 83 -11-12-13 000 20 03 08 -19.9 -24.3 28.67 10 20 102 313 -004 73 56 79 -11-12-13 000 21 03 09 -19.2 -23.9 28.66 12 23 104 315 001 73 64 70 -11-12-13 000 22 03 10 -19.0 -23.7 28.64 12 21 102 313 -002 72 60 65 -10-11-12 000 23 03 11 -19.3 -24.0 28.62 10 17 106 317 -002 71 45 52 -10-11-12 000 24 03 12 -18.1 -23.7 28.60 9 14 115 326 -004 60 48 42 -10-11-12 000 25 03 13 -17.6 -22.8 28.59 9 16 99 310 -009 65 48 46 -11-11-12 000 26 03 14 -17.8 -22.3 28.57 6 12 82 293 -005 70 49 48 -11-11-12 000 27 03 15 -16.9 -20.1 28.56 4 10 50 261 000 84 42 89 -12-12-13 000 28 03 16 -18.2 -22.5 28.57 6 7 281 132 001 73 73 97 -14-14-15 000 29 03 17 -16.8 -21.8 28.57 6 8 348 199 -002 67 62104 -14-14-14 000 30 03 18 -17.3 -21.6 28.59 9 12 350 201 002 76 55101 -13-14-14 000 31 03 19 -17.2 -20.6 28.62 14 20 338 189 -007 85 52 99 -14-13-14 000 32 03 20 -16.5 -18.4 28.64 15 24 332 183 -009 100 60 97 -13-14-14 002 33 03 21 -18.5 -21.2 28.67 17 28 335 186 -002 94 60 94 -14-14-15 003 34 03 22 -19.1 -22.0 28.71 17 31 337 188 -002 92 67 94 -15-14-15 001 35 03 23 -19.4 -21.3 28.75 15 29 338 189 000 103 66 80 -15-14-15 000 36 04 00 -20.6 -21.8 28.79 13 24 352 203 001 113 68 78 -14-14-15 000 37 04 01 -22.4 -22.8 28.84 14 24 5 216 000 124 68 81 -14-14-15 000 38 04 02 -22.3 -22.8 28.87 12 21 8 220 000 124 69 81 -14-14-15 000 39 04 03 -21.9 -22.3 28.90 12 17 10 221 000 123 73 78 -14-14-15 000 40 04 04 -22.9 -23.4 28.93 9 14 14 225 -002 124 75 76 -14-14-15 000 41 04 05 -22.2 -22.8 28.96 8 14 7 218 000 123 76 79 -14-15-15 000 42 04 06 -21.8 -22.4 28.98 8 12 6 217 -002 122 79 86 -15-15-15 000 43 04 07 -21.1 -21.5 29.00 6 9 351 202 -004 120 75 85 -14-15-15 000 44 04 08 -19.4 -19.4 29.01 4 5 342 193 -004 119 75 83 -14-14-15 000 45 04 09 -18.6 -19.1 29.03 0 2 300 151 -004 111 73 91 -14-14-15 000 46 04 10 -18.3 -19.0 29.05 1 7 72 283 000 112 79103 -14-15-16 000 47 04 11 -19.7 -21.2 29.08 4 14 106 317 007 109 99108 -15-16-17 011 48 04 12 -20.7 -21.4 29.09 6 13 113 324 -002 116104104 -16-16-17 007 49 04 13 -21.5 -22.1 29.10 6 13 110 321 -001 121 99102 -16-16-17 001 50 04 14 -22.1 -22.7 29.11 6 14 126 337 000 122 98102 -16-16-17 002 51 04 15 -22.9 -23.4 29.12 7 14 136 347 000 122 95101 -16-16-17 001 52 04 16 -23.9 -24.6 29.12 7 14 127 338 000 124 83 98 -16-16-17 000 53 04 17 -24.4 -25.1 29.12 7 13 138 349 001 125 75 90 -16-16-16 000 54 04 18 -24.5 -25.1 29.11 7 12 138 349 002 125 74 62 -16-16-16 000 55 04 19 -24.4 -25.0 29.10 6 10 134 345 000 125 86 62 -15-15-16 000 56 04 20 -24.1 -24.5 29.08 6 10 129 340 000 124 69 63 -15-15-16 000 57 04 21 -23.9 -24.3 29.06 7 11 121 332 003 123 52 56 -15-15-16 000 58 04 22 -23.8 -24.2 29.04 8 12 119 330 001 123 46 38 -14-15-16 000 59 04 23 -23.5 -24.1 29.02 9 14 118 329 001 123 49 24 -14-15-16 000 60 05 00 -23.5 -24.0 29.00 9 16 123 334 003 123 39 19 -15-15-16 000 61 05 01 -23.4 -24.0 28.97 10 18 127 338 001 124 31 21 -15-15-15 000 62 05 02 -22.9 -23.5 28.94 10 19 136 347 001 123 20 23 -15-14-14 000 63 05 03 -22.1 -24.3 28.90 10 19 150 1 001 101 20 16 -15-14-13 000 64 05 04 -21.8 -25.1 28.88 10 19 160 11 002 89 22 15 -15-14-13 000 65 05 05 -21.7 -26.3 28.85 9 18 165 16 003 75 33 32 -14-14-13 000 66 05 06 -22.1 -26.1 28.83 9 16 161 12 001 81 45 70 -14-13-13 000 67 05 07 -22.9 -27.0 28.82 8 17 178 29 000 79 48 77 -14-13-13 000 68 05 08 -22.5 -27.5 28.80 7 16 186 37 002 69 73 80 -13-13-13 000 69 05 09 -22.4 -27.0 28.78 6 12 184 35 000 75 83 77 -13-12-12 000 70 05 10 -20.7 -25.0 28.76 5 11 166 17 001 79 68 81 -12-11-12 000 71 05 11 -19.3 -22.3 28.75 4 8 141 352 -001 90 74 74 -11-11-12 000 72 05 12 -18.8 -19.5 28.75 4 7 110 321 002 110 76 69 -11-11-11 000 73 05 13 -18.1 -18.1 28.74 4 5 87 298 000 117 79 68 -11-11-11 000 74 05 14 -18.7 -18.7 28.74 5 5 35 246 000 118 72 55 -10-10-11 000 75 05 15 -20.6 -20.8 28.74 6 6 48 259 000 119 75 49 -11-11-11 000 76 05 16 -20.1 -20.3 28.73 6 7 45 256 000 119 67 46 -11-10-10 000 77 05 17 -19.7 -19.8 28.73 6 8 38 249 -001 118 64 50 -10-10-10 000 78 05 18 -19.2 -19.2 28.72 6 7 39 250 000 118 58 54 -10 -9 -9 000 79 05 19 -19.8 -19.8 28.72 6 7 53 264 004 118 60 57 -10-10 -9 000 80 05 20 -17.7 -18.8 28.71 5 6 50 261 001 104 66 59 -10-10 -9 000 81 05 21 -18.5 -19.8 28.71 7 9 54 265 001 102 56 64 -9 -9 -9 000 82 05 22 -18.7 -20.9 28.70 7 11 48 259 002 92 44 67 -9 -9-10 000 83 05 23 -17.2 -20.9 28.69 6 9 38 249 000 79 42 57 -8 -9 -9 000 84 06 00 -15.3 -20.6 28.68 4 7 50 261 000 70 43 61 -8 -9 -9 000 85 06 01 -18.5 -21.7 28.67 7 11 98 309 003 84 44 56 -9 -9-10 000 86 06 02 -20.6 -21.6 28.65 6 14 90 301 001 109 42 67 -9 -9-10 000 87 06 03 -19.7 -22.3 28.64 11 17 74 285 002 92 38 59 -9 -9 -9 000 88 06 04 -19.9 -21.9 28.62 11 19 74 285 -003 99 34 47 -8 -8 -8 000 89 06 05 -18.7 -22.3 28.61 11 18 67 278 004 80 43 44 -9 -8 -9 000 90 06 06 -21.0 -21.5 28.60 11 19 49 260 -011 121 47 47 -9 -9-10 000 91 06 07 -20.7 -21.2 28.58 12 22 56 267 -013 120 50 48 -9 -9 -9 000 92 06 08 -18.2 -20.0 28.57 11 17 63 274 -009 100 45 37 -9-10-10 000 93 06 09 -18.9 -19.5 28.56 10 16 55 266 -007 113 63 32 -10 -9 -8 000 94 06 10 -21.1 -21.7 28.56 8 14 80 291 -006 120 64 35 -11 -9 -8 000 95 06 11 -21.2 -23.4 28.55 8 12 78 289 -001 97 66 36 -10 -9 -8 000 96 06 12 -20.8 -22.0 28.54 9 12 71 282 000 108 67 34 -11-10 -8 000 97 06 13 -20.7 -21.0 28.53 8 11 71 282 -003 119 65 35 -11 -9 -8 000 98 06 14 -20.6 -21.1 28.51 9 13 65 276 -002 120 55 54 -10 -9 -8 000 99 06 15 -20.0 -20.5 28.50 10 14 65 276 000 119 38 65 -9 -8 -9 000 100 06 16 -20.8 -23.0 28.48 12 21 64 275 -004 100 49 71 -8 -8 -9 000 101 06 17 -19.6 -22.9 28.47 11 20 83 294 000 86 61 76 -8 -9-10 000 102 06 18 -20.5 -23.7 28.45 11 20 81 292 000 89 46 72 -10 -9 -9 000 103 06 19 -21.8 -24.0 28.44 12 21 70 281 000 101 42 55 -10 -9 -9 000 104 06 20 -22.0 -24.3 28.43 12 22 69 280 003 101 38 45 -9 -9 -9 000 105 06 21 -22.4 -24.4 28.42 14 25 62 273 001 105 39 39 -11 -9 -9 000 106 06 22 -22.1 -24.4 28.40 13 22 58 269 -003 101 36 39 -10 -8 -9 000 107 06 23 -22.7 -24.7 28.39 13 20 61 272 -002 104 36 31 -10 -8 -9 000 108 07 00 -22.5 -25.1 28.38 13 20 62 273 -003 97 33 30 -9 -8 -9 000 109 07 01 -22.5 -25.2 28.37 12 21 65 276 -005 96 30 32 -9 -8 -8 000 110 07 02 -21.5 -24.9 28.36 13 21 69 280 -002 87 30 33 -9 -8 -8 000 111 07 03 -21.5 -24.7 28.34 12 21 71 282 000 89 32 33 -8 -8 -9 000 112 07 04 -22.5 -24.1 28.33 13 22 66 277 -003 109 35 34 -10 -9 -9 000 113 07 05 -21.2 -24.2 28.32 13 22 61 272 -003 91 38 45 -11-10-10 000 114 07 06 -22.8 -23.8 28.32 12 21 61 272 -004 117 35 34 -11-11-11 000 115 07 07 -23.0 -24.3 28.30 13 23 64 275 000 113 42 27 -13-11-11 000 116 07 08 -22.3 -24.5 28.29 13 22 67 278 -004 101 37 32 -13-11-11 000 117 07 09 -23.7 -24.3 28.28 16 24 60 271 -005 123 36 42 -14-10-10 000 118 07 10 -25.9 -26.4 28.27 14 24 53 264 -005 128 45 40 -14-11-10 000 119 07 11 -26.6 -27.1 28.26 14 25 51 262 -002 129 49 40 -14-11-12 000 120 07 12 -25.9 -26.4 28.26 16 25 50 261 002 128 56 47 -13-12-12 000 * 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.