4-18-2021 Northwest Avalanche Center Hurricane Ridge, Olympic National Park, Washington MM/DD Hour Temp RH Wind Wind Wind Wind Hour Total Total PST F % Min Avg Max Dir Prec. Prec. Snow 5250' 5250' 5250' 5250' 5250' 5250' 5250' 5250' 5250' ------------------------------------------------------------------ 4 17 500 49 38 6 8 12 153 0 0 110 4 17 600 48 34 -0 4 8 174 0 0 110 4 17 700 50 29 -0 2 4 214 0 0 110 4 17 800 57 24 -0 1 4 220 0 0 110 4 17 900 58 26 -0 0 3 223 0 0 109 4 17 1000 60 25 -0 0 4 220 0 0 109 4 17 1100 62 23 -0 0 4 230 0 0 108 4 17 1200 62 23 -0 0 2 220 0 0 107 4 17 1300 61 25 -0 0 2 189 0 0 108 4 17 1400 59 31 -0 0 5 136 0 0 108 4 17 1500 61 29 -0 0 0 299 0 0 108 4 17 1600 58 38 -0 0 2 48 0 0 108 4 17 1700 54 41 -0 0 2 64 0 0 109 4 17 1800 53 38 -0 0 0 45 0 0 108 4 17 1900 52 33 -0 0 2 45 0 0 108 4 17 2000 49 42 -0 0 0 55 0 0 109 4 17 2100 50 34 -0 0 0 88 0 0 109 4 17 2200 50 33 -0 0 0 90 0 0 109 4 17 2300 52 29 -0 0 0 104 0 0 109 4 18 0 51 31 -0 0 0 115 0 0 109 4 18 100 50 33 -0 0 0 115 0 0 109 4 18 200 49 35 -0 0 0 260 0 0 108 4 18 300 48 42 -0 0 0 269 0 0 108 4 18 400 46 49 -0 0 4 352 0 0 109 Total Prec. 5250' ------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Mt Baker Ski Area, Washington Wind gages unheated and may rime MM/DD Hour Temp Temp RH RH Wind Wind Wind Wind Hour Total 24 Hr Total PST F F % % Min Avg Max Dir Prec. Prec. Snow Snow 5020' 4210' 5020' 4210' 5020' 5020' 5020' 5020' 4210' 4210' 4210' 4210' ------------------------------------------------------------------------------------ 4 17 500 53 48 23 35 0 0 1 160 0 0 -0 189 4 17 600 54 49 22 34 0 0 3 203 0 0 -0 189 4 17 700 55 51 22 33 0 3 8 204 0 0 -0 189 4 17 800 56 53 22 29 4 6 8 187 0 0 -0 188 4 17 900 57 55 22 27 4 6 9 176 0 0 -0 188 4 17 1000 57 57 24 25 5 7 9 170 0 0 -0 187 4 17 1100 57 58 24 25 4 7 9 170 0 0 -0 187 4 17 1200 58 59 24 25 4 7 11 166 0 0 -0 186 4 17 1300 58 60 24 24 4 7 10 173 0 0 -0 186 4 17 1400 58 60 24 24 4 7 10 176 0 0 -0 186 4 17 1500 60 60 21 23 0 5 8 185 0 0 -0 185 4 17 1600 61 58 22 26 0 3 7 220 0 0 -0 185 4 17 1700 58 54 26 35 0 4 8 295 0 0 -0 186 4 17 1800 55 51 28 36 0 7 13 317 0 0 0 186 4 17 1900 52 53 30 32 0 0 6 161 0 0 -0 186 4 17 2000 51 48 35 41 0 0 4 68 0 0 -0 186 4 17 2100 51 47 34 43 0 0 2 82 0 0 0 186 4 17 2200 52 47 28 42 0 0 0 83 0 0 0 186 4 17 2300 52 47 28 39 0 0 0 26 0 0 0 186 4 18 0 53 47 23 37 0 0 3 359 0 0 0 186 4 18 100 52 48 24 35 0 5 10 297 0 0 0 186 4 18 200 52 48 24 34 0 4 6 298 0 0 0 186 4 18 300 51 46 27 38 0 0 4 352 0 0 -0 186 4 18 400 50 46 28 41 0 0 3 40 0 0 0 186 Total Prec. 4210' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Washington Pass, Washington Wind gages unheated and may rime Precipitation gage may measure condensation MM/DD Hour Temp Temp RH RH Wind Wind Wind Equip Hour Total Total PST F F % % Avg Max Dir Temp Prec. Prec. Snow 6680' 5450' 6680' 5450' 6680' 6680' 6680' 5450' 5450' 5450' 5450' ------------------------------------------------------------------------------ 4 17 500 44 27 31 81 5 8 231 57 0 0 88 4 17 600 47 27 30 79 1 5 236 60 0 0 87 4 17 700 47 30 32 75 2 4 196 60 0 0 87 4 17 800 47 44 31 37 6 7 232 71 0 0 86 4 17 900 50 49 32 30 6 8 208 78 0 0 86 4 17 1000 49 51 30 26 7 9 220 92 0 0 86 4 17 1100 51 55 28 19 8 11 218 95 0 0 86 4 17 1200 53 57 26 20 6 10 232 102 0 0 85 4 17 1300 53 59 30 18 5 10 212 102 0 0 84 4 17 1400 53 58 26 19 5 9 235 105 0 0 84 4 17 1500 53 57 26 19 7 11 228 104 0 0 84 4 17 1600 52 57 26 19 7 11 163 101 0 0 84 4 17 1700 51 54 27 22 7 9 215 88 0 0 84 4 17 1800 49 43 28 46 7 11 225 78 0 0 84 4 17 1900 47 36 32 60 9 13 232 68 0 0 84 4 17 2000 47 34 35 68 9 13 233 64 0 0 85 4 17 2100 45 32 38 73 9 13 235 62 0 0 85 4 17 2200 45 31 43 76 10 13 239 61 0 0 85 4 17 2300 45 30 40 79 10 14 248 62 0 0 85 4 18 0 44 29 38 83 7 9 231 59 0 0 85 4 18 100 45 29 35 83 4 11 277 60 0 0 85 4 18 200 44 28 36 84 5 9 276 57 0 0 85 4 18 300 44 28 35 84 6 9 274 56 0 0 85 4 18 400 43 27 33 85 7 14 242 60 0 0 85 Total Prec. 5450' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Freestone Inn, Mazama, Washington Wind gages unheated and may rime MM/DD Hour Temp RH Solar Wind Wind Wind Hour Total 24 Hr Total PST F % W/m2 Avg Max Dir Prec. Prec. Snow Snow 2170' 2170' 2170' 2170' 2170' 2170' 2170' 2170' 2170' 2170' ------------------------------------------------------------------------ 4 17 500 33 85 0 0 2 315 0 0 0 -0 4 17 600 33 86 11 0 2 325 0 0 0 -0 4 17 700 38 80 36 0 1 44 0 0 0 -0 4 17 800 50 48 167 0 0 74 0 0 0 -0 Total Prec. 2170' ------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Tye Mill and Skyline, Stevens Pass Ski Area, Washington Wind gages unheated and may rime MM/DD Hour Temp Temp Wind Wind Wind Wind PST F F Min Avg Max Dir 5180' 5250' 5180' 5180' 5180' 5180' ------------------------------------------------ 4 17 500 43 44 2 4 6 107 4 17 600 50 49 2 4 7 110 4 17 700 54 60 0 3 6 109 4 17 800 57 57 0 2 7 111 4 17 900 55 0 0 4 218 4 17 1000 57 0 0 4 12 4 17 1100 57 0 2 5 24 4 17 1200 59 0 3 6 28 4 17 1300 59 0 1 5 25 4 17 1400 61 0 1 7 324 4 17 1500 60 0 4 13 282 4 17 1600 60 0 6 12 279 4 17 1700 59 0 3 11 282 4 17 1800 55 0 11 18 271 4 17 1900 52 7 12 18 264 4 17 2000 51 5 8 15 265 4 17 2100 51 3 6 9 271 4 17 2200 51 4 6 9 266 4 17 2300 51 3 5 7 269 4 18 0 50 2 5 7 266 4 18 100 51 3 6 10 266 4 18 200 50 4 7 11 272 4 18 300 49 6 9 13 276 4 18 400 48 5 9 14 274 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Schmidt Haus, Stevens Pass, Washington MM/DD Hour Temp RH Hour Total 24 Hr Total Press PST F % Prec. Prec. Snow Snow mb 3950' 3950' 3950' 3950' 3950' 3950' 3950' ------------------------------------------------------ 4 17 500 36 74 0 0 0 115 1023 4 17 600 36 76 0 0 0 115 1023 4 17 700 37 75 0 0 0 115 1023 4 17 800 38 72 0 0 0 115 1023 4 17 900 42 64 0 0 0 115 1024 4 17 1000 48 51 0 0 0 114 1024 4 17 1100 49 49 0 0 0 114 1024 4 17 1200 53 40 0 0 0 114 1024 4 17 1300 55 36 0 0 0 112 1023 4 17 1400 49 50 0 0 -0 113 1023 4 17 1500 54 38 0 0 -0 113 1023 4 17 1600 49 47 0 0 0 114 1023 4 17 1700 49 48 0 0 0 114 1023 4 17 1800 44 60 0 0 0 114 1022 4 17 1900 42 67 0 0 0 114 1023 4 17 2000 40 74 0 0 0 114 1023 4 17 2100 39 75 0 0 0 114 1023 4 17 2200 40 74 0 0 0 114 1023 4 17 2300 40 74 0 0 0 114 1023 4 18 0 39 75 0 0 0 114 1023 4 18 100 39 74 0 0 0 114 1022 4 18 200 39 73 0 0 0 114 1022 4 18 300 38 75 0 0 0 114 1022 4 18 400 38 74 0 0 0 114 1021 Total Prec. 3950' ------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Brooks Chair, Stevens Pass Ski Area, Washington MM/DD Hour Temp RH Hour Total 24 Hr Total PST F % Prec. Prec. Snow Snow 4800' 4800' 4800' 4800' 4800' 4800' ------------------------------------------------ 4 17 500 42 41 0 0 -0 136 4 17 600 44 38 0 0 0 135 4 17 700 45 41 0 0 -0 134 4 17 800 51 33 0 0 -0 134 4 17 900 57 26 0 0 -0 134 4 17 1000 58 27 0 0 -0 133 4 17 1100 58 26 0 0 -0 133 4 17 1200 57 27 0 0 -0 132 4 17 1300 60 23 0 0 -1 132 4 17 1400 59 24 0 0 -0 133 4 17 1500 58 25 0 0 -0 133 4 17 1600 58 22 0 0 -0 132 4 17 1700 58 23 0 0 -0 133 4 17 1800 53 36 0 0 -0 132 4 17 1900 48 47 0 0 0 133 4 17 2000 45 52 0 0 0 133 4 17 2100 44 55 0 0 0 133 4 17 2200 43 58 0 0 -0 133 4 17 2300 43 57 0 0 0 132 4 18 0 43 55 0 0 0 133 4 18 100 45 52 0 0 -0 133 4 18 200 44 54 0 0 0 133 4 18 300 44 50 0 0 0 133 4 18 400 45 41 0 0 0 133 Total Prec. 4800' ------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Grace Lakes, Stevens Pass, Washington Wind gages unheated and may rime MM/DD Hour Temp RH Wind Wind Wind Total Shot PST F % Avg Max Dir Snow Snow 4790' 4790' 4590' 4590' 4590' 4790' 4790' ------------------------------------------------------ 4 17 500 47 31 3 7 194 153 0 4 17 600 46 32 4 7 198 153 0 4 17 700 48 32 5 11 173 153 0 4 17 800 51 31 8 13 160 153 0 4 17 900 55 27 10 16 163 153 0 4 17 1000 57 27 8 14 154 152 0 4 17 1100 58 24 6 13 148 152 0 4 17 1200 62 19 4 11 148 152 -0 4 17 1300 64 19 2 6 42 151 0 4 17 1400 63 17 3 9 346 151 -0 4 17 1500 61 19 3 11 338 151 0 4 17 1600 58 23 3 12 340 151 0 4 17 1700 57 23 2 11 353 151 0 4 17 1800 55 32 2 10 317 151 0 4 17 1900 52 39 3 8 272 151 0 4 17 2000 52 38 3 6 265 151 0 4 17 2100 51 40 3 6 264 151 0 4 17 2200 51 40 2 5 267 151 0 4 17 2300 51 40 3 5 273 151 0 4 18 0 51 40 2 5 270 151 0 4 18 100 50 41 1 6 257 151 0 4 18 200 50 39 2 6 277 151 0 4 18 300 48 43 4 7 283 151 0 4 18 400 48 35 4 9 289 151 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Berne Snow Camp (8 miles east of Stevens Pass), Washington MM/DD Hour Temp RH Hour Total 24 Hr Total Press PST F % Prec. Prec. Snow Snow mb 2700' 2700' 2700' 2700' 2700' 2700' 2700' ------------------------------------------------------ 4 17 500 31 88 0 0 0 6 1023 4 17 600 32 88 0 0 -0 6 1023 4 17 700 37 78 0 0 0 6 1023 4 17 800 46 64 0 0 0 5 1023 Total Prec. 2700' ------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Dirty Face Mountain, Washington Wind gages unheated and may rime MM/DD Hour Temp RH Wind Wind Wind Wind PST F % Min Avg Max Dir 5980' 5980' 5980' 5980' 5980' 5980' ------------------------------------------------ 4 17 500 44 34 8 9 12 94 4 17 600 46 31 8 9 14 93 4 17 700 46 32 8 10 14 85 4 17 800 46 33 7 9 12 73 Page 1 4-18-2021 Northwest Avalanche Center Lake Wenatchee State Park, Washington Wind gages unheated and may rime MM/DD Hour Temp RH Wind Wind Wind Wind Hour Total 24 Hr Total PST F % Min Avg Max Dir Prec. Prec. Snow Snow 1930' 1930' 1930' 1930' 1930' 1930' 1930' 1930' 1930' 1930' ------------------------------------------------------------------------ 4 17 500 30 95 0 0 0 239 0 0 0 -0 4 17 600 30 95 0 0 0 239 0 0 0 -0 4 17 700 34 91 0 0 0 239 0 0 0 -0 4 17 800 41 79 0 0 1 239 0 0 1 -0 Total Prec. 1930' ------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Tumwater Mountain and Leavenworth, Washington Wind gages unheated and may rime MM/DD Hour Temp Temp RH RH Wind Wind Wind Hour Total 24 hr Total Total PST F F % % Avg Max Dir Prec. Prec. Snow Snow Snow 4180' 1190' 4180' 1190' 4180' 4180' 4180' 1190' 1190 1190' 1190' 4180' ------------------------------------------------------------------------------------ 4 17 500 50 38 30 78 1 4 243 0 0 0 0 10 4 17 600 54 38 26 79 0 2 194 0 0 0 0 10 4 17 700 57 42 24 69 0 1 133 0 0 0 -0 9 4 17 800 58 48 28 56 0 3 96 0 0 0 -0 8 4 17 900 60 53 23 46 0 3 113 0 0 0 -0 6 4 17 1000 62 59 28 37 0 4 123 0 0 0 -0 6 4 17 1100 58 67 26 27 2 7 128 0 0 0 -0 8 4 17 1200 61 72 21 18 2 7 143 0 0 -0 -0 7 4 17 1300 61 76 21 14 2 10 144 0 0 0 -0 7 4 17 1400 63 77 21 14 2 8 132 0 0 0 -0 8 4 17 1500 64 78 20 13 2 6 130 0 0 0 -0 7 4 17 1600 65 78 21 14 2 7 131 0 0 0 -0 6 4 17 1700 63 76 22 19 3 8 259 0 0 0 -0 7 4 17 1800 62 67 24 31 4 8 262 0 0 0 -0 7 4 17 1900 59 64 25 34 2 5 244 0 0 0 0 7 4 17 2000 58 59 25 43 3 6 268 0 0 0 0 8 4 17 2100 57 56 26 46 3 6 8 0 0 0 0 8 4 17 2200 55 52 29 52 3 7 327 0 0 0 0 8 4 17 2300 56 50 29 57 7 16 270 0 0 0 0 7 4 18 0 56 48 30 58 12 19 278 0 0 0 0 7 4 18 100 56 46 28 62 9 17 287 0 0 0 0 8 4 18 200 56 45 27 64 8 15 290 0 0 0 0 8 4 18 300 55 44 26 68 10 18 282 0 0 0 0 7 4 18 400 55 42 27 72 9 19 279 0 0 0 0 8 Total Prec. 1190 ------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Mt Washington (about 6 miles SE of North Bend), Washington Wind direction unheated and may rime MM/DD Hour Batt Temp Wind Solar PST Volt Deg F Dir W/m2 4340' 4340' 4340' 4340' ------------------------------------------------ 4 17 500 12.7 49 148 0 4 17 600 12.7 50 129 5 4 17 700 12.7 51 100 8 4 17 800 12.8 53 113 9 4 17 900 13.4 55 139 9 4 17 1000 13.5 57 137 10 4 17 1100 13.6 57 101 10 4 17 1200 13.4 59 182 10 4 17 1300 13.1 61 157 10 4 17 1400 13.0 59 149 10 4 17 1500 13.1 59 243 10 4 17 1600 13.4 58 239 10 4 17 1700 13.7 57 242 11 4 17 1800 14.1 56 270 11 4 17 1900 13.4 55 244 8 4 17 2000 12.9 54 324 0 4 17 2100 12.8 56 141 0 4 17 2200 12.8 56 230 0 4 17 2300 12.8 55 229 0 4 18 0 12.7 55 268 0 4 18 100 12.7 55 334 0 4 18 200 12.7 54 330 0 4 18 300 12.7 53 327 0 4 18 400 12.7 52 311 0 Page 1 4-18-2021 Northwest Avalanche Center Alpental Ski Area, Washington Wind gages unheated and may rime MM/DD Hour Temp Temp Temp RH RH Wind Wind Wind Hour Total 24 Hr Total 24 Hr Total Inter PST F F F % % Avg Max Dir Prec. Prec. Snow Snow Snow Snow Snow 5470' 4350' 3100' 3100' 5470' 5520' 5520' 5520' 3100' 3100' 3100' 3100' 4350' 4350' 5470' ------------------------------------------------------------------------------------------------------ 4 17 500 46 49 35 80 32 7 11 220 0 0 1 119 0 182 0 4 17 600 46 50 35 81 33 7 11 199 0 0 5 120 0 182 5 4 17 700 47 50 36 82 31 7 13 101 0 0 5 120 0 182 5 4 17 800 48 49 38 82 29 5 12 194 0 0 5 120 0 181 0 4 17 900 49 51 47 58 27 5 10 200 0 0 5 119 0 182 4 4 17 1000 50 53 52 49 26 6 13 191 0 0 4 119 0 181 4 4 17 1100 51 53 58 37 26 5 13 182 0 0 4 118 0 181 3 4 17 1200 52 55 59 32 26 5 9 179 0 0 3 118 0 180 4 4 17 1300 54 55 58 34 26 6 12 168 0 0 3 117 0 180 3 4 17 1400 55 56 55 38 26 7 12 168 0 0 3 118 0 180 4 4 17 1500 55 55 52 43 24 5 11 182 0 0 3 118 0 180 0 4 17 1600 55 54 52 43 21 2 5 191 0 0 3 118 0 179 0 4 17 1700 54 50 46 56 25 3 11 298 0 0 3 118 0 179 0 4 17 1800 52 50 43 65 37 9 13 306 0 0 2 118 0 180 3 4 17 1900 51 49 41 72 41 11 15 5 0 0 3 118 0 180 3 4 17 2000 49 48 40 76 41 13 17 16 0 0 3 118 0 180 3 4 17 2100 50 48 40 76 40 11 14 359 0 0 3 118 0 180 3 4 17 2200 50 48 39 78 33 7 10 323 0 0 2 118 0 180 4 4 17 2300 51 48 39 78 30 5 10 294 0 0 2 118 0 180 4 4 18 0 50 48 39 78 31 8 11 306 0 0 2 118 0 179 4 4 18 100 48 48 39 78 36 10 15 332 0 0 2 118 0 179 4 4 18 200 48 47 38 78 35 13 16 337 0 0 2 118 0 179 4 4 18 300 48 47 38 79 33 15 20 337 0 0 2 118 0 179 3 4 18 400 48 47 38 77 30 15 21 319 0 0 2 118 0 179 3 Total Prec. 3100' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Snoqualmie Pass, Washington 3770' temp above Lake Keechelus MM/DD Hour Temp Temp Temp RH Wind Wind Wind Hour Total 24 Hr Total Press Lysim Lysim Lysim PST F F F % Avg Max Dir Prec. Prec. Snow Snow mb H2O Total deg F 3760' 3770' 3010' 3010' 3760' 3760' 3760' 3010' 3010' 3010' 3010' 3010' 3010' 3010' 3010' ------------------------------------------------------------------------------------------------------ 4 17 500 50 46 32 89 15 19 105 0 0 0 102 1025 .013 .013 32 4 17 600 49 44 33 87 16 18 105 0 0 -0 102 1025 .013 .026 32 4 17 700 49 51 35 83 15 18 109 0 0 -0 102 1025 .013 .039 32 4 17 800 52 49 48 50 11 15 108 0 0 -0 101 1025 .012 .051 32 4 17 900 54 53 56 39 11 13 107 0 0 -0 101 1025 .011 .062 32 4 17 1000 54 58 66 27 10 13 110 0 0 -0 100 1025 .009 .071 32 4 17 1100 57 60 66 24 8 12 124 0 0 -0 100 1024 .007 .078 32 4 17 1200 58 62 68 22 9 13 122 0 0 -0 100 1024 .007 .085 32 4 17 1300 61 65 69 19 8 14 120 0 0 -0 100 1024 .013 .098 32 4 17 1400 62 65 69 21 7 13 121 0 0 -0 100 1023 .016 .114 32 4 17 1500 63 67 67 21 6 10 111 0 0 -0 99 1023 .017 .131 32 4 17 1600 64 65 60 31 3 6 90 0 0 -0 99 1022 .017 .148 32 4 17 1700 64 65 55 41 7 14 178 0 0 -0 98 1022 .017 .165 32 4 17 1800 62 62 49 53 9 14 231 0 0 -0 99 1023 .016 .181 32 4 17 1900 60 58 42 70 8 11 214 0 0 0 99 1023 .016 .197 32 4 17 2000 58 57 40 75 7 9 219 0 0 0 100 1024 .016 .213 32 4 17 2100 58 56 39 78 4 6 216 0 0 -0 100 1024 .015 .228 32 4 17 2200 57 56 38 80 1 3 221 0 0 -0 100 1024 .015 .243 32 4 17 2300 57 56 37 83 0 1 139 0 0 -0 100 1024 .014 .257 32 4 18 0 56 55 36 83 0 1 116 0 0 -0 100 1023 .014 .271 32 4 18 100 57 54 36 85 0 0 129 0 0 -0 100 1023 .014 .285 32 4 18 200 56 54 36 85 0 2 142 0 0 -0 100 1023 .014 .299 32 4 18 300 55 55 36 85 3 5 222 0 0 -0 100 1023 .014 .313 32 4 18 400 55 54 36 84 4 5 241 0 0 -0 100 1023 .014 .327 32 Total Lysim Prec. Total 3010' 3010' ------------------------------------------------------------------------------------------------ 0 .327 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Blewett Pass, WA Precipitation gage may measure condensation MM/DD Hour Temp RH Equip Hour Total 24 Hr Total Press PST F % Temp Prec. Prec. Snow Snow mb 4100' 4100' 4100' 4100' 4100' 4100' 4100' 4100' ------------------------------------------------------------ 4 17 500 42 41 38 0 0 0 0 1024 4 17 600 41 41 39 0 0 0 0 1024 4 17 700 55 32 65 0 0 -0 -0 1025 4 17 800 58 21 74 0 0 -0 0 1024 Total Prec. 4100' ------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Mission Ridge Ski Area, Washington MM/DD Hour Temp Temp Temp RH RH Wind Wind Wind Hour Total 24 Hr Total PST F F F % % Avg Max Dir Prec. Prec. Snow Snow 6730' 5160' 4610' 6730' 5160' 6730' 6730' 6730' 5160' 5160' 5160' 5160' ------------------------------------------------------------------------------------ 4 17 500 39 37 41 38 71 12 16 64 0 0 1 34 4 17 600 40 38 41 33 69 9 12 54 0 0 1 32 4 17 700 43 43 42 30 58 7 11 60 0 0 1 32 4 17 800 46 49 47 29 47 6 11 54 0 0 0 31 4 17 900 48 51 54 29 43 2 11 0 0 0 0 32 4 17 1000 48 51 55 28 45 1 7 266 0 0 1 31 4 17 1100 48 52 56 30 44 6 15 239 0 0 1 32 4 17 1200 49 53 57 30 44 7 14 241 0 0 1 31 4 17 1300 49 54 58 33 45 9 17 234 0 0 0 31 4 17 1400 51 54 59 32 43 7 15 247 0 0 0 31 4 17 1500 51 52 59 32 46 8 17 263 0 0 1 31 4 17 1600 52 50 58 29 47 5 13 267 0 0 1 30 4 17 1700 51 46 53 30 56 5 12 256 0 0 1 30 4 17 1800 50 43 48 31 66 6 11 250 0 0 1 30 4 17 1900 48 42 47 32 69 5 9 238 0 0 1 31 4 17 2000 46 42 47 31 68 5 9 266 0 0 1 31 4 17 2100 46 42 47 29 62 7 11 284 0 0 1 31 4 17 2200 45 43 47 32 61 8 12 280 0 0 1 31 4 17 2300 45 42 46 31 64 7 10 281 0 0 1 31 4 18 0 45 42 46 32 61 8 12 276 0 0 1 31 4 18 100 45 43 47 32 58 10 15 278 0 0 1 31 4 18 200 45 43 47 30 55 10 14 280 0 0 1 31 4 18 300 44 42 47 34 63 13 17 271 0 0 1 31 4 18 400 44 42 47 35 62 13 20 270 0 0 1 31 Total Prec. 5160' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Crystal Mountain Ski Area, Washington MM/DD Hour Temp Temp RH RH Wind Wind Wind Wind Hour Total 24 Hr Total SR50 PST F F % % Min Avg Max Dir Prec. Prec. Snow Snow Snow 6830' 4540' 6830' 4540' 6830' 6830' 6830' 6830' 4540' 4540' 4540' 4540' 4540' ------------------------------------------------------------------------------------------ 4 17 500 36 34 53 73 16 22 32 105 0 0 -2 224 86 4 17 600 38 33 48 78 13 24 34 115 0 0 -2 224 86 4 17 700 41 35 45 74 12 21 29 108 0 0 -2 224 86 4 17 800 43 40 41 65 10 19 30 101 0 0 -2 222 85 4 17 900 45 47 38 49 8 16 25 102 0 0 -2 219 85 4 17 1000 45 56 38 23 6 14 23 98 0 0 -2 210 85 4 17 1100 45 58 39 21 7 15 23 105 0 0 -2 208 84 4 17 1200 48 58 34 26 0 9 19 96 0 0 -2 204 84 4 17 1300 49 54 32 38 0 5 11 81 0 0 -3 204 83 4 17 1400 52 53 27 40 0 5 13 85 0 0 -3 207 83 4 17 1500 52 54 26 38 1 4 10 228 0 0 -3 207 83 4 17 1600 55 54 25 40 0 4 14 303 0 0 -3 208 82 4 17 1700 54 51 32 46 3 9 16 300 0 0 -3 212 83 4 17 1800 51 38 39 73 4 9 21 296 0 0 -3 222 84 4 17 1900 45 37 48 78 7 10 14 304 0 0 -3 223 84 4 17 2000 45 36 52 80 9 12 14 311 0 0 -3 223 84 4 17 2100 44 36 50 81 6 8 11 305 0 0 -3 223 84 4 17 2200 45 35 47 82 4 5 6 296 0 0 -3 223 84 4 17 2300 45 36 45 82 4 7 9 285 0 0 -3 223 84 4 18 0 44 34 41 85 8 11 13 274 0 0 -3 224 84 4 18 100 43 34 36 81 7 12 16 270 0 0 -3 224 84 4 18 200 43 34 35 80 8 16 20 268 0 0 -3 224 84 4 18 300 43 34 36 81 11 17 21 265 0 0 -3 224 84 4 18 400 42 33 34 82 13 17 23 270 0 0 -3 224 84 Total Prec. 4540' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Green Valley and Campbell Basin, Crystal Mountain Ski Area, Washington MM/DD Hour Temp Temp 24 hr Total 24 hr Total PST F F Snow Snow Snow Snow 6230' 5940' 6230' 6230' 5940' 5940' ------------------------------------------------ 4 17 500 40 39 -0 128 0 117 4 17 600 42 42 -0 128 0 117 4 17 700 44 46 -0 128 -0 117 4 17 800 46 51 -0 127 -0 117 4 17 900 48 53 -0 127 -230 117 4 17 1000 51 54 -0 126 0 116 4 17 1100 53 53 -0 126 0 116 4 17 1200 55 54 -0 126 0 116 4 17 1300 55 56 -0 125 -0 115 4 17 1400 56 58 -0 125 -0 114 4 17 1500 55 55 -0 125 -0 114 4 17 1600 55 54 -0 125 -0 115 4 17 1700 50 52 -0 126 0 115 4 17 1800 49 49 -0 125 0 115 4 17 1900 44 46 -0 125 0 115 4 17 2000 44 49 -0 126 0 115 4 17 2100 44 44 -0 126 0 115 4 17 2200 45 41 -0 126 0 115 4 17 2300 44 42 -0 126 0 115 4 18 0 43 42 -0 126 0 115 4 18 100 42 42 -0 125 0 115 4 18 200 43 42 -0 126 0 115 4 18 300 43 45 -0 125 0 115 4 18 400 41 43 -0 125 0 115 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation Chinook Pass, Washington Wind gages unheated and may rime Precipitation gage may measure condensation MM/DD Hour Temp Temp RH RH Wind Wind Wind Equip Hour Total Total PST F F % % Avg Max Dir Temp Prec. Prec. Snow 6240' 5500' 6240' 5500' 6240' 6240' 6240' 5500' 5500' 5500' 5500' ------------------------------------------------------------------------------ 4 17 500 40 42 43 33 3 6 77 38 0 0 167 4 17 600 43 44 39 31 4 8 95 40 0 0 167 4 17 700 44 46 40 28 4 9 83 51 0 0 167 4 17 800 46 48 39 26 3 9 91 52 0 0 167 4 17 900 48 49 39 24 7 18 96 55 0 0 166 4 17 1000 50 54 40 21 4 9 95 77 0 0 166 4 17 1100 52 55 39 20 4 10 85 79 0 0 166 4 17 1200 53 56 37 19 8 15 103 80 0 0 166 4 17 1300 54 57 31 18 4 10 105 82 0 0 164 4 17 1400 55 56 31 20 5 9 20 76 0 0 164 4 17 1500 56 58 32 18 3 9 268 77 0 0 166 4 17 1600 56 58 31 19 5 17 208 81 0 0 166 4 17 1700 54 55 36 23 10 19 262 60 0 0 166 4 17 1800 52 52 42 33 8 12 279 52 0 0 166 4 17 1900 47 50 48 38 10 14 261 49 0 0 166 4 17 2000 47 49 49 40 12 16 281 48 0 0 166 4 17 2100 48 49 47 41 10 14 324 47 0 0 166 4 17 2200 48 47 45 42 7 9 328 44 0 0 165 4 17 2300 49 48 43 41 6 7 326 44 0 0 166 4 18 0 48 50 41 34 7 9 316 46 0 0 166 4 18 100 48 48 32 28 9 10 301 46 0 0 165 4 18 200 48 48 32 27 10 12 300 45 0 0 166 4 18 300 47 48 33 27 8 12 310 44 0 0 165 4 18 400 46 48 33 28 11 14 300 44 0 0 165 Total Prec. 5500' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Sunrise, Mount Rainier National Park, Washington Wind gages unheated and may rime MM/DD Hour Temp Temp RH RH Wind Wind Wind Total PST F F % % Avg Max Dir Snow 6880' 6410' 6880' 6410' 6880' 6880' 6880' 6410' ------------------------------------------------------------ 4 17 500 38 38 40 36 21 25 189 97 4 17 600 39 42 34 28 20 25 187 97 4 17 700 42 48 32 23 20 25 188 96 4 17 800 43 51 30 21 18 24 186 96 4 17 900 45 53 28 20 17 25 182 95 4 17 1000 46 53 29 20 15 23 178 95 4 17 1100 47 52 28 21 14 23 178 95 4 17 1200 51 53 26 21 11 17 179 95 4 17 1300 51 55 25 20 9 16 186 94 4 17 1400 51 55 25 20 10 17 190 94 4 17 1500 52 56 24 19 10 16 186 94 4 17 1600 53 55 21 20 5 11 244 95 4 17 1700 52 53 32 30 4 8 355 95 4 17 1800 47 49 42 37 7 12 5 95 4 17 1900 43 45 52 45 9 13 351 96 4 17 2000 43 44 48 47 7 11 355 95 4 17 2100 43 43 47 46 6 9 359 96 4 17 2200 43 42 43 43 5 11 321 96 4 17 2300 44 43 29 30 7 11 300 95 4 18 0 43 44 32 29 10 14 298 96 4 18 100 42 44 35 31 10 16 301 95 4 18 200 43 43 27 31 9 17 302 95 4 18 300 42 43 37 34 10 16 307 96 4 18 400 42 44 34 28 12 19 314 95 Page 1 4-18-2021 Northwest Avalanche Center Paradise, Mt Rainier National Park, Washington MM/DD Hour Temp RH Wind Wind Wind Hour Total 24 Hr Total Solar PST F % Avg Max Dir Prec. Prec. Snow Snow W/m2 5400' 5400' 5380' 5380' 5380' 5400' 5400' 5400' 5400' 5380' ------------------------------------------------------------------------ 4 17 500 46 26 5 11 67 0 0 0 192 0 4 17 600 46 24 5 16 72 0 0 0 192 25 4 17 700 47 24 4 10 94 0 0 0 192 272 4 17 800 50 22 4 8 95 0 0 -0 192 499 5 13 98 706 6 15 95 872 5 14 90 984 2 8 65 1031 3 6 34 1013 3 8 19 930 5 8 354 791 4 8 304 604 5 9 272 385 4 8 274 167 1 5 267 11 0 4 9 0 0 2 19 0 1 3 40 0 1 2 26 0 1 3 16 0 2 4 7 0 1 4 3 0 3 4 325 0 2 5 302 0 Total Prec. 5400' ------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Camp Muir, Mt Rainier National Park, Washington Wind gages unheated and may rime MM/DD Hour Temp RH Wind Wind Wind Wind Solar PST F % Min Avg Max Dir w/m2 10110' 10110' 10110' 10110' 10110' 10110' 10110' --------------------------------------------------------------- 4 17 500 26 36 6 8 10 50 0 4 17 600 25 45 5 8 12 58 15 4 17 700 28 39 5 10 15 61 136 4 17 800 29 30 6 12 16 65 365 Page 1 4-18-2021 Northwest Avalanche Center White Pass Ski Area, Washington MM/DD Hour Temp Temp RH RH Wind Wind Wind Wind Hour Total Total PST F F % % Min Avg Max Dir Prec. Prec. Snow 5800' 4500' 5800' 4500' 5970' 5970' 5970' 5970' 5800' 5800' 5800' ------------------------------------------------------------------------------ 4 17 500 40 34 41 65 18 22 26 109 0 0 136 4 17 600 41 36 37 56 18 22 24 111 0 0 136 4 17 700 45 43 32 43 16 20 25 109 0 0 136 4 17 800 50 49 29 34 14 18 28 108 0 0 135 51 29 13 17 23 100 53 28 13 17 24 96 55 24 9 15 23 92 56 23 7 13 18 92 58 22 2 8 14 99 60 20 2 8 16 101 62 20 4 7 13 91 59 25 1 6 13 120 64 18 0 6 16 249 61 28 3 9 15 284 47 46 0 4 12 173 42 55 2 7 11 282 41 60 0 5 10 271 40 62 0 4 7 305 39 64 0 0 4 291 38 67 0 1 4 285 38 66 2 5 9 279 36 76 7 11 14 284 36 73 11 13 20 283 38 67 13 17 23 280 Total Prec. 5800' ------------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Washington Department of Transportation WSDOT White Pass Station, Washington MM/DD Hour Temp RH Press Wind Wind Hour Total 24 Hr Total Snow DewPt PST F % mb Avg Dir Prec Prec Snow Snow TempC TempC 4320' 4320' 4320' 4320' 4320' 4320' 4320' 4320' 4320' 4320' 4320 ------------------------------------------------------------------------------ 4 17 500 88 0 1025 1475 -7999 0 0 -1 -7999 349 4 17 600 89 0 1025 1475 -7999 0 0 -0 -7999 2 4 17 700 63 0 1025 1469 -7999 0 0 -2 -7999 314 4 17 800 47 0 1025 1468 -7999 0 0 -1 -7999 50 4 17 900 31 1 1025 1459 -7999 0 0 -4 -7999 32 4 17 1000 21 2 1025 1451 -7999 0 0 -7 -7999 176 4 17 1100 20 2 1025 1453 -7999 0 0 -7 -7999 193 4 17 1200 21 3 1025 1461 -7999 0 0 -6 -7999 179 4 17 1300 18 3 1025 1456 -7999 0 0 -7 -7999 132 4 17 1400 17 3 1025 1461 -7999 0 0 -8 -7999 137 4 17 1500 16 2 1024 1461 -7999 0 0 -8 -7999 108 4 17 1600 20 1 1024 1481 -7999 0 0 -6 -7999 140 4 17 1700 48 0 1024 1494 -7999 0 0 -2 -7999 337 4 17 1800 63 2 1024 1498 -7999 0 0 -2 -7999 340 4 17 1900 73 0 1024 1501 -7999 0 0 -0 -7999 340 4 17 2000 80 0 1025 1503 -7999 0 0 -0 -7999 336 Total Prec 4320' ------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Mt St Helens, Coldwater Ridge Visitor Center, Washington MM/DD Hour Temp RH Wind Wind Wind Hour Total PST F % Avg Max Dir Prec. Prec. 3260' 3260' 3260' 3260' 3260' 3260' 3260' ------------------------------------------------------ Total Prec. 3260' ------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Timberline Lodge, Oregon MM/DD Hour Temp RH Wind Wind Wind Wind Hour Total 24 Hr Total PST F % Min Avg Max Dir Prec. Prec. Snow Snow 5880' 5880' 6000' 6000' 6000' 6000' 5880' 5880' 5880' 5880' ------------------------------------------------------------------------ 4 17 500 44 32 -0 7 21 305 0 0 -0 172 4 17 600 43 35 -0 9 21 299 0 0 -0 172 4 17 700 45 34 -0 7 18 298 0 0 -0 172 4 17 800 45 34 -0 6 15 300 0 0 -0 172 Total Prec. 5880' ------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Top of The Magic Mile chair, Timberline, Oregon Wind instruments not heating and may rime MM/DD Hour Temp RH Wind Wind Wind Wind PST F % Min Avg Max Dir 7000' 7000' 7000' 7000' 7000' 7000' ------------------------------------------------ 4 17 500 42 22 19 25 32 124 4 17 600 42 23 17 24 29 -7999 4 17 700 43 23 12 20 28 -7999 4 17 800 46 20 13 19 24 -7999 4 17 900 45 25 11 17 25 261 4 17 1000 45 25 10 17 25 51 4 17 1100 44 31 8 16 25 264 4 17 1200 45 38 0 11 23 -7999 4 17 1300 47 37 0 1 7 339 4 17 1400 48 33 0 0 5 -7999 4 17 1500 48 30 0 1 8 -7999 4 17 1600 47 35 0 0 2 44 4 17 1700 47 36 0 0 3 60 4 17 1800 45 42 0 0 2 49 4 17 1900 43 38 0 3 12 26 4 17 2000 43 39 9 11 14 8 4 17 2100 42 33 0 2 12 352 4 17 2200 42 32 0 7 14 10 4 17 2300 43 27 1 5 12 75 4 18 0 43 25 0 3 8 346 4 18 100 42 29 0 4 8 12 4 18 200 42 28 0 3 6 44 4 18 300 41 37 0 6 11 333 4 18 400 38 50 8 14 17 292 Page 1 4-18-2021 Northwest Avalanche Center Mt Hood Meadows Ski Area, Oregon MM/DD Hour Temp Temp RH RH Wind Wind Wind Hour Total 24 Hr Total Press PST F F % % Avg Max Dir Prec. Prec. Snow Snow mb 6540' 5380' 6540' 5380' 6540' 6540' 6540' 5380' 5380' 5380' 5380' 5380' ------------------------------------------------------------------------------------ 4 17 500 38 41 37 41 17 28 26 0 0 0 138 1023 4 17 600 38 43 37 35 16 26 25 0 0 0 138 1023 4 17 700 39 47 36 32 11 17 28 0 0 0 137 1023 4 17 800 40 49 35 28 9 14 7 0 0 0 138 1023 4 17 900 42 49 32 27 9 14 40 0 0 0 138 1024 4 17 1000 44 51 27 22 7 15 11 0 0 0 137 1024 4 17 1100 45 54 24 22 8 16 84 0 0 0 137 1024 4 17 1200 47 58 23 18 4 9 14 0 0 0 137 1024 4 17 1300 47 58 23 19 3 11 14 0 0 0 136 1024 4 17 1400 51 59 24 18 2 6 136 0 0 0 135 1024 4 17 1500 49 56 29 18 3 8 94 0 0 0 135 1023 4 17 1600 47 54 30 28 2 7 56 0 0 0 136 1023 4 17 1700 47 50 32 35 2 6 8 0 0 0 136 1023 4 17 1800 44 45 38 46 0 4 26 0 0 0 135 1023 4 17 1900 43 43 31 50 0 0 282 0 0 0 136 1023 4 17 2000 43 43 32 46 2 8 38 0 0 0 136 1023 4 17 2100 43 41 30 50 0 6 134 0 0 0 136 1024 4 17 2200 43 42 27 45 0 0 230 0 0 0 136 1024 4 17 2300 39 41 31 47 0 0 231 0 0 0 136 1023 4 18 0 44 41 19 41 2 7 3 0 0 0 136 1023 4 18 100 39 41 35 39 0 3 4 0 0 0 136 1023 4 18 200 42 41 27 43 1 4 266 0 0 0 136 1023 4 18 300 40 41 25 39 6 10 259 0 0 0 136 1023 4 18 400 42 41 25 41 9 14 35 0 0 0 136 1023 Total Prec. 5380' ------------------------------------------------------------------ 0 Page 1 4-18-2021 Northwest Avalanche Center Cascade Express, Mt Hood Meadows Ski Area, Oregon Wind gages heated but building structure may cause rime around instruments MM/DD Hour Temp RH Wind Wind Wind Wind PST F % Min Avg Max Dir 7300' 7300' 7300 7300' 7300' 7300' ------------------------------------------------ 4 17 500 36 35 9 21 31 244 4 17 600 40 16 8 19 26 250 4 17 700 38 40 10 17 25 199 4 17 800 38 41 11 14 18 215 4 17 900 42 15 2 12 19 240 4 17 1000 41 24 0 10 21 242 4 17 1100 42 27 4 11 16 230 4 17 1200 43 32 2 6 15 170 4 17 1300 44 28 0 2 11 235 4 17 1400 46 25 0 0 2 217 4 17 1500 48 26 0 0 3 221 4 17 1600 46 30 0 0 0 176 4 17 1700 46 35 0 0 0 345 4 17 1800 45 40 0 0 0 181 4 17 1900 45 18 0 0 4 235 4 17 2000 43 32 0 0 5 303 4 17 2100 40 35 0 0 0 296 4 17 2200 39 34 0 0 0 254 4 17 2300 41 22 0 0 0 287 4 18 0 44 23 0 1 8 306 4 18 100 39 36 0 0 0 301 4 18 200 37 33 0 0 0 263 4 18 300 40 24 0 0 6 246 4 18 400 43 19 0 5 11 284 Page 1 4-18-2021 Northwest Avalanche Center Ski Bowl Ski Area, Government Camp, Oregon Wind direction unheated and may rime MM/DD Hour Temp Temp RH RH Wind Wind Wind Wind Hour Total Total PST F F % % Min Avg Max Dir Prec. Prec. Snow 5010' 3660' 5010' 3660' 5010' 5010' 5010' 5010' 3660' 3660' 5010' ------------------------------------------------------------------------------ 4 17 500 40 35 55 81 13 23 31 0 0 0 82 4 17 600 41 36 54 80 14 22 28 0 0 0 82 4 17 700 42 37 52 79 11 17 25 0 0 0 81 4 17 800 43 40 51 70 7 15 24 0 0 0 81 4 17 900 45 50 48 44 7 13 23 0 0 0 81 4 17 1000 46 54 48 37 7 13 25 360 0 0 81 4 17 1100 47 58 43 28 4 10 19 0 0 0 80 4 17 1200 45 57 51 33 3 8 13 0 0 0 80 4 17 1300 47 58 50 30 1 6 13 0 0 0 80 4 17 1400 48 51 42 45 1 4 12 0 0 0 79 4 17 1500 47 51 47 46 0 5 16 360 0 0 78 4 17 1600 49 44 45 63 0 4 10 360 0 0 79 4 17 1700 50 41 39 71 0 3 7 360 0 0 79 4 17 1800 47 38 44 79 0 5 11 0 0 0 79 4 17 1900 45 36 54 82 6 11 15 0 0 0 79 4 17 2000 48 35 45 85 7 10 13 0 0 0 79 4 17 2100 42 35 62 87 0 4 10 0 0 0 79 4 17 2200 41 34 66 87 0 0 4 0 0 0 79 4 17 2300 48 34 33 87 0 5 8 0 0 0 79 4 18 0 48 34 33 87 0 5 6 0 0 0 79 4 18 100 46 33 35 87 0 2 4 0 0 0 79 4 18 200 46 33 39 86 0 0 4 0 0 0 79 4 18 300 46 33 39 88 0 2 4 0 0 0 79 4 18 400 43 33 47 88 0 1 3 0 0 0 79 Total Prec. 3660' ------------------------------------------------------------------------ 0 Page 1