The Forecast That Sits on Your Limit
A TAF that is clearly below your minimums is easy. A TAF that is clearly above them is easy too. The hard one is the forecast that lands within a couple of hundred feet of the number you wrote down, on a day you have already rearranged things to fly. That is where the reasoning gets quietly rewritten, and it is the case worth having a method for.
Read the Change, Not the Snapshot
A TAF is a sequence, not a value. The line that matters is usually not the one covering your departure time but the one after it: whether the forecast is trending toward your limit or away from it, how fast, and how confident the wording is. TEMPO and PROB groups are the forecaster telling you where their own uncertainty sits. A ceiling forecast to drop through your limit an hour after you land is a different flight from the same number holding all afternoon.
Decide What Would Change Your Mind
Before you look again, name the observation that would settle it: a specific METAR at a specific field, a trend across two reporting cycles, a pilot report. Deciding in advance what evidence counts is what stops the last look from being a search for permission. If the answer is that no plausible observation would change the plan, the plan was already made and the forecast is decoration.
Where the Tool Fits
FlightReady pulls the current picture when you analyze a route and scores weather as the heaviest of its eleven factors, with your own minimums applied as a separate factor beside it. What it will not do is resolve the disagreement for you. A marginal forecast against a written limit is a judgment call, and the pilot in command makes it — the value of writing the limit down beforehand is that the call is made against a number chosen on a calm day rather than one negotiated on the ramp.
