When do i get there? How do i avoid faceplanting into dirt? What even is wind and air? Are we in a simulation?

Windcheck is a small aviation weather workbench. It takes the boring parts of airport weather research — scrolling METARs, checking runways, comparing forecast sources, wondering whether a gust number is a one-off or a habit — and puts them into one view.

It is not an official briefing system and it does not know your aircraft, your currency, your stomach, your instructor, or the exact texture of the runway you are about to meet. It is built for pattern recognition: what usually happens here, what the models currently think, and where the obvious traps may be.

1. Enter an airport. FAA and ICAO codes both work where the airport data exists.
2. Pick a runway mode. Auto chooses the runway end best aligned with the wind; fixed runway mode shows crosswind for the runway you actually care about.
3. Choose hours and a historical window. Overview shows the repeatable shape by Pacific hour; All Historical shows the individual observations.
4. Set personal minimums. The app flags low visibility, low ceiling, and crosswind above your max.
5. Read the forecast section as model guidance, not prophecy. If the models disagree, that disagreement is itself useful.

METAR-TAF is a good resource for fast aviation weather lookup. If you want a clean current METAR or TAF, it is often exactly the right tab.

Windcheck has a narrower itch: combine airport history, runway-aware crosswind, personal minimums, density altitude, and several forecast methods without making the pilot assemble the story from separate pages. The goal is not to replace the simple lookup; it is to answer the follow-up question: “is this airport usually like this, and do the models agree about what is next?”

TAFs are airport-specific and aviation-native, but they only exist for selected airports and are human/official products with limited spatial coverage. LAMP adds short-range, station-oriented statistical guidance. HRRR gives high-resolution short-range model detail. NBM blends many models into a point forecast. NAM and GFS extend the model comparison when useful. NWS gridpoint data is easy to consume and broad, but less aviation-specific.

The app does not pretend these sources are equally good. It shows their horizons and values side by side because agreement, disagreement, and missing coverage are all signals.

Do not use Windcheck as your only preflight weather source. It is a planning aid, not a legal briefing, dispatch release, or instrument rating.

METAR history can have missing reports, station changes, parsing weirdness, and weather that changed between observations. Forecast models can be wrong in exactly the hour that matters. Crosswind math is clean; the atmosphere is not.