USAP Siple Dome (SDM) site lat/lon = (-81.6640,-149.0175) cell lat/lon = (-81.6600,-148.9887) Forecast initialized at 2026-02-01/00 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 01 00 -7.5 -9.0 28.97 7 11 13 224 000 85 82 86 -7 -7 -7 000 1 01 01 -7.6 -9.0 28.97 9 12 14 225 000 95 86 88 -7 -7 -7 000 2 01 02 -7.9 -9.1 28.98 8 11 21 232 000 97 85 87 -7 -7 -7 000 3 01 03 -8.3 -9.3 28.98 8 11 24 235 000 100 85 88 -7 -7 -7 000 4 01 04 -8.8 -9.7 28.99 8 12 28 239 001 102 84 90 -6 -7 -7 000 5 01 05 -9.3 -10.1 28.99 8 11 33 244 001 103 84 91 -6 -6 -7 000 6 01 06 -9.7 -10.4 28.98 8 12 33 244 002 105 86 92 -6 -6 -7 000 7 01 07 -10.1 -10.7 28.99 8 12 37 248 002 106 86 92 -6 -6 -7 000 8 01 08 -10.5 -11.2 28.97 8 12 35 246 001 106 85 92 -6 -6 -7 000 9 01 09 -10.6 -11.5 28.98 8 13 33 244 002 103 81 92 -6 -6 -7 000 10 01 10 -10.5 -11.5 28.99 8 12 31 242 001 102 77 92 -6 -6 -7 000 11 01 11 -10.4 -10.9 28.98 8 12 30 241 000 107 75 92 -5 -6 -7 000 12 01 12 -10.2 -10.5 28.96 8 12 31 242 -002 109 87 93 -5 -6 -6 000 13 01 13 -8.9 -9.7 28.96 7 12 29 240 -003 103 85 94 -5 -6 -7 000 14 01 14 -8.8 -9.4 28.96 8 13 33 244 -001 105 90 97 -6 -6 -7 000 15 01 15 -8.3 -9.2 28.96 8 14 29 240 000 101 92101 -6 -6 -7 000 16 01 16 -8.2 -9.1 28.97 8 15 28 239 -002 100 94 99 -6 -7 -8 001 17 01 17 -7.3 -8.4 28.96 9 14 29 240 001 98100100 -6 -6 -7 008 18 01 18 -6.7 -7.2 28.95 12 17 15 226 000 103107 94 -7 -7 -8 010 19 01 19 -6.6 -6.9 28.94 13 19 8 219 000 105 99 92 -6 -7 -7 006 20 01 20 -6.3 -6.4 28.93 14 21 5 216 000 106102 89 -7 -7 -6 005 21 01 21 -6.0 -6.1 28.93 14 20 3 214 -002 106107 89 -7 -7 -7 006 22 01 22 -5.7 -5.7 28.94 13 19 1 212 -005 105107 90 -6 -7 -8 006 23 01 23 -5.0 -5.1 28.93 14 19 354 205 -008 105107 87 -6 -7 -8 004 24 02 00 -4.7 -4.8 28.92 14 19 355 206 -007 105107 89 -6 -7 -7 004 25 02 01 -4.7 -4.8 28.91 14 19 352 203 -003 104107 88 -6 -7 -7 004 26 02 02 -4.7 -4.7 28.91 14 19 347 198 -001 104107 87 -5 -7 -7 002 27 02 03 -4.5 -4.6 28.90 12 17 347 198 002 104106 88 -5 -6 -7 002 28 02 04 -4.4 -4.5 28.90 12 17 349 200 -003 104106 89 -5 -6 -7 003 29 02 05 -4.3 -4.4 28.89 12 18 352 203 -001 104106 91 -5 -6 -7 001 30 02 06 -4.5 -4.5 28.88 11 16 358 209 -001 104106 90 -5 -6 -7 004 31 02 07 -4.2 -4.2 28.88 11 16 4 215 -004 104106 97 -5 -6 -7 004 32 02 08 -4.2 -4.3 28.88 12 16 8 219 -006 104106100 -5 -6 -7 015 33 02 09 -4.2 -4.4 28.87 11 15 10 221 -002 103106101 -5 -6 -7 015 34 02 10 -4.3 -4.4 28.87 10 15 12 223 -005 104104100 -5 -5 -6 009 35 02 11 -4.3 -4.4 28.86 11 16 17 228 -004 104105 99 -5 -5 -5 010 36 02 12 -4.2 -4.3 28.86 12 17 21 232 -007 104102 98 -4 -4 -5 010 37 02 13 -4.2 -4.3 28.85 11 16 26 237 -004 104104 97 -4 -5 -5 006 38 02 14 -3.9 -3.9 28.84 12 18 30 241 -005 104102 97 -4 -4 -5 015 39 02 15 -4.1 -4.7 28.84 13 20 36 247 -005 99 95 99 -3 -4 -5 009 40 02 16 -4.4 -5.3 28.83 14 21 37 248 -004 97 93 96 -4 -4 -5 013 41 02 17 -4.6 -5.2 28.82 14 18 36 247 -007 100101 96 -4 -4 -4 029 42 02 18 -4.0 -4.3 28.82 14 21 27 238 -006 101104 96 -4 -4 -4 027 43 02 19 -2.7 -2.9 28.82 15 19 6 218 -002 101105 99 -3 -5 -5 030 44 02 20 -2.8 -3.2 28.82 14 21 352 203 -005 100105 98 -4 -5 -6 017 45 02 21 -3.1 -3.3 28.83 18 23 349 200 -008 102105 95 -4 -5 -6 034 46 02 22 -2.7 -3.2 28.83 17 23 341 192 -004 98105 93 -4 -5 -6 012 47 02 23 -3.1 -3.2 28.84 17 23 330 181 -002 103105 88 -4 -5 -6 005 48 03 00 -3.1 -3.1 28.85 15 22 336 187 -003 103105 92 -4 -5 -6 001 49 03 01 -3.2 -3.2 28.84 13 18 343 194 -003 103105 70 -4 -5 -6 000 50 03 02 -3.4 -3.4 28.85 14 18 354 205 -003 103105 79 -4 -5 -6 000 51 03 03 -3.8 -3.8 28.85 14 17 3 214 -004 104106 91 -5 -6 -4 000 52 03 04 -4.2 -4.2 28.85 13 15 11 222 -006 104 99100 -5 -5 -4 000 53 03 05 -4.2 -4.3 28.85 11 15 26 237 -003 104 87 93 -5 -4 -4 000 54 03 06 -4.5 -4.8 28.85 11 16 17 228 -005 102105 84 -5 -5 -5 000 55 03 07 -3.9 -4.5 28.83 11 14 23 234 -006 99106 76 -5 -6 -4 000 56 03 08 -4.1 -4.6 28.82 11 15 28 239 -005 100 98 79 -5 -5 -4 000 57 03 09 -3.8 -4.2 28.81 11 13 40 251 -006 100 98 84 -4 -5 -4 000 58 03 10 -5.9 -6.1 28.80 8 11 48 259 -007 105 87 85 -3 -3 -4 000 59 03 11 -7.3 -7.4 28.79 7 11 51 262 -007 107 79 85 -3 -3 -4 000 60 03 12 -8.0 -8.2 28.77 6 10 63 274 -003 107 72 85 -2 -2 -3 000 61 03 13 -8.0 -8.3 28.75 5 10 84 295 009 108 70 83 -2 -2 -3 000 62 03 14 -5.4 -5.5 28.74 10 15 94 305 002 105 76 85 -4 -2 -3 000 63 03 15 -4.3 -4.4 28.72 12 16 108 319 000 104 82 75 -5 -3 -4 000 64 03 16 -3.2 -3.8 28.70 14 20 117 328 000 98104 73 -4 -5 -2 000 65 03 17 -3.4 -3.9 28.68 16 24 127 338 -001 99103 77 -4 -4 -2 000 66 03 18 -3.8 -3.9 28.67 17 24 129 340 000 104 90 64 -5 -3 -3 000 67 03 19 -4.0 -4.1 28.64 16 23 134 345 000 104 76 63 -3 -2 -2 000 68 03 20 -4.2 -4.3 28.63 15 23 132 343 000 104 74 61 -2 -2 -3 000 69 03 21 -4.2 -4.3 28.61 14 23 134 345 -001 104 72 61 -2 -2 -3 000 70 03 22 -4.3 -4.4 28.60 13 23 141 352 001 104 66 63 -1 -2 -3 000 71 03 23 -4.7 -4.8 28.59 13 23 142 353 000 104 67 61 -2 -2 -3 000 72 04 00 -5.1 -5.2 28.58 13 22 144 355 -001 105 63 60 -2 -1 -2 000 73 04 01 -5.0 -5.1 28.57 14 20 145 356 -001 105 53 60 -3 0 -2 000 74 04 02 -5.0 -5.0 28.56 14 22 157 8 003 105 55 52 -2 -1 -2 000 75 04 03 -4.6 -4.7 28.55 13 22 162 13 -004 104 58 51 -4 -1 -2 000 76 04 04 -4.8 -4.9 28.54 12 23 171 22 001 104 61 52 -3 -1 -2 000 77 04 05 -5.0 -5.0 28.54 11 22 177 28 000 105 63 53 -4 -2 -3 000 78 04 06 -5.3 -5.4 28.53 10 17 188 39 -004 105 68 56 -4 -3 -2 000 79 04 07 -5.7 -5.8 28.53 9 12 194 45 -001 105 75 59 -4 -3 -2 000 80 04 08 -6.2 -6.3 28.54 4 6 209 60 -004 106 97 57 -5 -5 -4 000 81 04 09 -6.6 -6.7 28.54 2 2 241 92 -002 106 98 58 -5 -5 -5 000 82 04 10 -6.8 -6.9 28.55 3 3 296 147 -005 107 97 61 -5 -5 -5 000 83 04 11 -7.2 -7.3 28.56 6 6 354 205 -002 107 99 60 -5 -5 -4 000 84 04 12 -6.3 -6.4 28.57 11 15 358 209 002 106101 64 -7 -6 -5 000 85 04 13 -5.7 -5.8 28.57 14 19 345 196 002 105105 68 -6 -6 -5 000 86 04 14 -5.4 -5.5 28.58 14 19 345 196 000 105107 74 -6 -7 -5 000 87 04 15 -5.1 -5.2 28.59 15 19 354 205 000 105107 76 -6 -7 -6 000 88 04 16 -5.2 -5.3 28.59 14 19 358 209 000 105107 80 -5 -6 -6 000 89 04 17 -4.9 -5.0 28.61 14 19 359 210 000 105107 86 -5 -6 -6 000 90 04 18 -4.6 -4.6 28.62 15 20 359 210 000 104107 92 -5 -7 -5 000 91 04 19 -4.2 -4.3 28.63 15 21 0 211 001 104106 95 -5 -6 -6 000 92 04 20 -4.1 -4.2 28.65 16 21 355 206 000 104106 97 -5 -6 -7 000 93 04 21 -4.5 -4.5 28.66 16 20 358 209 000 104106106 -5 -6 -6 002 94 04 22 -4.6 -4.7 28.68 16 21 0 211 000 104106 98 -5 -6 -6 003 95 04 23 -4.5 -4.5 28.70 16 20 4 215 000 104106102 -5 -6 -6 003 96 05 00 -4.5 -4.6 28.72 16 19 2 213 000 104106107 -5 -6 -6 004 97 05 01 -4.6 -4.7 28.73 15 19 354 205 001 104107106 -6 -6 -6 003 98 05 02 -5.0 -5.1 28.74 14 17 358 209 000 105107105 -6 -7 -6 003 99 05 03 -5.3 -5.3 28.76 14 18 352 203 000 105107 97 -6 -7 -7 003 100 05 04 -5.1 -5.2 28.77 14 19 1 213 000 104107100 -6 -7 -7 004 101 05 05 -4.9 -5.0 28.78 16 21 1 212 -002 105106 96 -6 -6 -7 004 102 05 06 -4.8 -4.9 28.80 15 21 353 204 -001 104106100 -5 -6 -7 006 103 05 07 -4.5 -4.6 28.81 16 21 356 207 -001 104106 98 -5 -6 -7 008 104 05 08 -4.9 -5.0 28.82 17 23 357 208 004 105106 98 -5 -6 -7 009 105 05 09 -5.2 -5.3 28.84 16 22 357 208 -004 105107 99 -6 -7 -8 006 106 05 10 -5.5 -5.6 28.85 15 20 5 216 002 105107 91 -6 -7 -8 004 107 05 11 -5.5 -5.6 28.86 15 20 3 214 -002 105107 90 -6 -7 -8 006 108 05 12 -5.4 -5.5 28.87 15 19 3 214 -003 105107 97 -6 -7 -8 010 109 05 13 -5.4 -5.7 28.88 14 18 4 215 -006 104107111 -6 -7 -8 015 110 05 14 -5.4 -5.7 28.89 13 17 359 210 -007 104107101 -6 -7 -8 017 111 05 15 -5.6 -5.9 28.90 13 17 359 210 -006 103107103 -6 -7 -8 013 112 05 16 -5.9 -6.1 28.91 13 17 357 208 -002 105107 96 -7 -7 -8 008 113 05 17 -6.0 -6.1 28.92 13 18 354 205 -005 106108100 -7 -7 -8 008 114 05 18 -6.0 -6.2 28.93 13 18 358 209 -005 105108 89 -7 -8 -8 006 115 05 19 -5.8 -6.3 28.93 14 18 0 211 -001 101108 93 -7 -8 -8 008 116 05 20 -5.6 -6.1 28.94 15 19 358 209 000 101108 92 -7 -8 -8 008 117 05 21 -5.6 -6.3 28.95 15 18 359 210 001 99108 93 -7 -8 -8 005 118 05 22 -5.6 -6.2 28.96 14 17 358 209 000 100108 89 -7 -8 -9 004 119 05 23 -5.6 -6.2 28.96 13 15 355 206 000 101108 97 -7 -8 -9 002 120 06 00 -5.8 -5.9 28.96 12 13 353 204 000 106108 99 -7 -8 -9 004 * 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.