- Wind directionW (270°) → NW (310°)
- Ideal speed5–12 mph
- Upper limits≤ 20 mph base · gusts ≤ 5
West-facing "Brown's Launch" ramp at ~11,200 ft MSL on Crested Butte Mtn, run by the Crested Butte Soaring Society (CBSS). Ideal WNW flow 270-310; usable but cross/edge 250-325. AVOID southerly components: rotor off surrounding rocks, trees and ridges builds fast and the gust factor historically increases rapidly with any south in the wind. High-altitude thin, dry air can be very active; valley winds are a serious concern and flying is discouraged once valley wind ramps up (typically afternoon) - morning/early-day is generally calmer. PG ideal ~10 mph, usable 0-20; HG usable ~3-22. Typical gust factor ~5 mph. Advanced site: H4/P4 (H3/P3 with 20+ hrs/flights this season + check-off may be allowed); PG min 5:1 glide. CBSS guide-pilot accompaniment is mandatory; chairlift (Silver Queen) or 4x4 road w/ resort permit for access.
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