Okay that's neat. It was interesting watching how the misery changes as the storms roll through watching something like DAL which is easy to see the effects. The cascade effect on cities without storms reminds me of how auto traffic slow downs from an accident continue to linger even though the blockage has cleared.

The UX is giving me misery.

Most of the time the red fills in counter-clockwise. Until it is over 50%, then the red fills in clockwise.

Lots of the map circles actually represent MULTIPLE airports. But they still "represent" them with a three letter code. Sometimes by the largest airport (ORD, SFO), sometimes by a non-airport code (NYC), and sometimes by the second largest (DFW is larger that DAL).

Someone's pet project needs some more love.

EDIT: This version looks less like a pet project: https://www.flightaware.com/live/airport/delays

That faa.gov url won't open. Can you share the correct link?

I’ve been using Flighty for this. This sort of tool is life changing. Today in DFW, it told me about my plane’s delay at least 15 to 20 minutes before the gate agent knew!

It’s closed to unscheduled transient flights, which is normal when an airport gets busy/backed up.

This is the note:

> Closed TO NON SKED TRANSIENT GA ACFT EXC PPR 617-561-2500

Which translates to “closed to non-scheduled transient general aviation aircraft, except those with prior permission from calling 617-561-2500”

They just don’t want me flying my Skyhawk in there at 90kts on final, at least without calling them first so they can get some cathartic tongue lashing in before giving me permission.

It's a day off for ORD, DFW, ATL, and MIA.

Canadian advisories (presumably from NAV CANADA) are fed into the ATCSCC system. You can see that more explicitly on the less slick version at https://www.fly.faa.gov/adv/advAdvisoryForm.jsp

Plenty of US domestic flights leave YYC every day. You clear US customs and immigration in Canada before getting on the plane so you can land at any airport in the entire country, not just international ones.