Hearne Municipal Airport

• Wind directionNNW (340°) → NNE (20°)
• Ideal speed3–12 mph
• Upper limits≤ 15 mph base · gusts ≤ 18

Hearne is a FLATLAND TOW site (winch/platform/payout tow off the 4,001 ft asphalt Runway 18/36, oriented N/S), not a slope or ridge launch — so it has no terrain-driven wind window in the usual sense. The "direction" arcs here represent the tow-into-wind alignment: tows run up or down the runway, so usable winds are roughly along the N–S axis (N/360 or S/180). The arc values above are centered on N; the equivalent southerly window is ~160–200 ideal / ~120–240 marginal — both work, with operators picking the runway direction that points into wind. Reports describe flyable days with winds out of the north AND out of the south, consistent with the N,S orientation hint. Because airspeed is supplied by the tow line, LIGHT-to-moderate winds are ideal; this is one of the world's premier flatland XC thermal sites with strong smooth lift, cloud streets, and 100-mile flights commonplace. Hazards: tow-specific (lockout, weak-link/bridle, line management), plus strong midday thermals and possible gust fronts/overdevelopment typical of Texas summer convection — towing shuts down in strong or gusty wind. Best time: thermal window roughly late morning into afternoon. Access/rating: towing only, by operator (XTexas Paragliding / Houston Hang Gliding & Paragliding Association); rated pilots (P2+/tow-sign-off) with a tow operator required — no self-launch. Speed numbers are inferred from general tow-operation norms, not a published club spec, hence medium confidence.