Jack Frost Big Boulder
2,175 ft · PAVAILIn season
14-Day Blow Score
73
71% of snowmaking windows used
238h of possible snowmaking, used 170h
Prime
0 / 0h
Good
136 / 182h
Marginal
34 / 56h
vs Regional avg
86-13
How Blow Score works
Blow Score measures how well a resort uses its snowmaking windows. When conditions are right for making snow, are they running their guns?
Prime — missing these is the worst
Good — solid windows, 70% weight
Marginal — barely worth it, 30% weight
Score = weighted hours confirmed / weighted hours available. Missing a prime hour carries a 1.5× penalty. 100 = perfect. 0 = wasted every opportunity.
East Coast Rankings
Last 14 Days — Hourly Breakdown
12/30
72
12/31
70
1/1
76
1/2
77
1/3
70
1/4
70
1/5
72
1/6
73
1/7
74
1/8
70
1/9
70
1/10
79
1/11
72
1/12
100
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Prime
Good
Marginal
No window
Blew snow
Missed
Pending
Lifts open
Lifts close
Community Reports
4 reports this week
26 total reports
Report volume
⚠️ Only 4 reports this week.
Help hold them accountable — your report shapes their grade.
Resort Info
Base elevation1,400 ft
Summit elevation2,175 ft
Vertical drop775 ft
Operator
Vail ResortsVAIL
StatePA
Grades are methodology-based editorial opinion · Data via Open-Meteo · Community reports are unverified