Why the flight window goes amber when the forecast looks perfectly fine

Terasor has two versions of the same tool. The planner at /drone-flight-planner is public: pick a city and the page under it carries live weather for that place. The flight window at /dashboard/flight-window is the signed in version, and the difference is not cosmetic. It answers against the aircraft recorded on your profile rather than a generic one, and if what you have recorded does not match anything it knows, it says so and falls back to a cautious default rather than guessing.

That default is why the window sometimes goes amber on a day that looks fine everywhere else. It is 8.5 m/s of wind, about 19 mph, a floor of 0 C, and no measurable rain at all. Those are not averages. They are the most conservative manufacturer published figures across the aircraft actually on the platform, and the 8.5 is the lower bound of the DJI Mini 2's stated band. A Mini 4 Pro is rated to 10.7 m/s and a Mini 5 Pro to 12 m/s, so if you fly one of those and it is on your profile, you get the headroom that is genuinely yours.

Two details people ask about. The gust limit is set equal to the wind limit rather than above it, because manufacturers publish one figure and a gust above it is above it. And a missing gust forecast shows as a gap, never as calm. Most tools render an absent figure as a blank, which reads as still air.

The colour is a weather answer for one aircraft. It is not a statement that a flight is safe or legal. Airspace, permissions and what is happening on the ground are still yours.

Two things I would like to know from anyone who flies regularly.

What wind figure do you personally stop at, and is it the manufacturer number or something lower you arrived at the hard way?

Has a gap in gust data ever caught you out, or do you treat a missing gust figure as a reason to not bother going?