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About PlaneWX

Weather Proxies

Lots of good GA fields have no METAR, no TAF, or only one of the two. PlaneWX picks a nearby station so you still get observations and forecasts — and you can change the pick.

When this matters

If the airport itself publishes a METAR, PlaneWX uses that METAR. Same for TAF. A hole means the native product is missing — METAR only, TAF only, or both. Proxies fill the hole. Airports with both products native never ask you for a proxy.

Proxy weather is still someone else’s field. Valley fog, terrain wind, and lake effect can miss the proxy. You’re PIC — this is decision support, not a go/no-go guarantee.

Add Trip — pick on the way in

When you open Watch a New Trip and origin or destination validates with a METAR and/or TAF hole, PlaneWX opens a small dialog for that airport — origin first, then destination if both need it.

  • System defaults are pre-selected (nearest sensible METAR and/or TAF mapping).
  • Pick another nearby station, or keep the system default.
  • Check Remember if you want that pick next time for this airport.
  • Dismiss keeps preferred (if you had one) or the system default — the trip still gets a proxy.

Home airport is not special here. If home has a hole, you get the same dialog when Add Trip opens with home pre-filled.

Per-airport proxy dialog for L39 with system METAR KDRI and TAF KPOE
Per-airport proxy dialog — system defaults, nearby picks, Save (same UI on Add Trip).

Weather line before Create / Watch

After origin and destination are set — whether you finished the dialog or Remember skipped it — a quiet one-liner sits above Create / Watch:

Weather: KGDJ TAF via KNFW (saved) · L39 METAR via KDRI (system) · TAF via KPOE (system)
  • saved — a Remember preference is in play
  • system — system default mapping
  • your pick — you chose something other than the system default for this trip
  • Change opens that airport’s proxy dialog again
  • Native airports stay off the line. Both ends native → no Weather line at all
Weather line on Add Trip showing KGDJ and L39 proxies with Change links
Weather line before Create / Watch — (system) / (saved) / (your pick) + Change.

Preferences → Weather proxies

Profile → Preferences → Weather proxies.

A table of airports you’ve Remember’d (plus your home row). Each row shows METAR and TAF proxy, whether it’s system or your pick, and Edit / Clear.

  • Home is always listed. Editing home dual-writes the home card proxy badges.
  • Edit opens the same per-airport dialog (manage mode).
  • Clear deletes the saved row. Next Add Trip for that airport prompts again (no silent Remember skip).
Preferences Weather proxies table with KGDJ Home row Edit and Clear
Preferences → Weather proxies — home row (KGDJ · Home); Edit or Clear.

On the briefing — disclosures

Proxy use is labeled, not buried. Look for system default vs your pick where a nearby station stands in:

  • Score gotchas when proxy weather drives a deduction
  • Ceilings & visibility
  • Terminal weather — compact via the proxy station (not a fat yellow banner)
  • Density altitude — when METAR is proxied: Proxy used — will not be accurate (local field elevation with another airport’s temperature and altimeter)
  • Wind / runway analysis when the observation is proxied
  • Email and print briefings carry the same via / provenance wording
Briefing TAF and METAR headers showing via proxy system default
Briefing Terminal — via the proxy station (system default), not a fat yellow banner.
Density altitude critical warning with Proxy used will not be accurate your pick
DA line — “Proxy used — will not be accurate (… · your pick).”

METAR vs TAF — often different fields

The nearest AWOS may not issue a TAF. PlaneWX can use one station for METAR and another for TAF. That’s intentional — closest product for each hole.

What this is not

  • Not a promise that conditions at the proxy match your field.
  • Not a substitute for calling the FBO, checking cams, or your own judgment.
  • Not a go/no-go order — the WX Score is decision support. You decide.

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