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.
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).
Just as a fun fact, there are IATA airport codes that designate cities instead of airport for purposes like this. NYC is one of them. So is YTO (Toronto) or CHI (Chicago, which should probably replace ORD).
Didnt expect this to trend on HN. I used to travel every week for work and learned to used this and fly.faa.gov/ois to find out how long ground stops will be during delays for years.
While I'm on this soapbox: ExpertFlyer. If you travel once per month or more, it is ABSOLUTELY worth the $10/mo. They provide a lot of info straight from GDSes, somehow. Invaluable for rebooking and seat changes.
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!
If you are delayed, get this tool up. It is a huge informational advantage over the data the airline will give you and provides excellent help making a decision on seeking a different mode of transportation, giving up and going home, taking an inferior seat on a different airline etc...
When I looked SFO, DEN, LAS, and EWR were all delayed due to weather. Do busier airports end up on this list more for some reason, or is it just really bad luck today?
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.
> 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.
