UA issued
Travel Waiver: Midwest Winter Weather (February 1 - 3, 2022) including ORD, this usually leads to some reduction in flight operations -- your flight may have been a victim. And yes the drawdown will start before the weather is too severe to avoid stranding equipment and crews out-of-place.
Flight Status UA590 1 Feb 2022
UA 590
Your flight is canceled because of severe weather conditions. Your safety is our priority and we're sorry for the inconvenience.
Originally Posted by
DominicB
... I've noticed on some other airline forums, some folk are able to look this kind of info up on a log where the airline has to record an official reason for the flight delay. ...
Do you have more information on this? Not aware of any such official listing for USA flights?
UA does report to the FAA such statistics but not on a realtime basis.
Some information can be sites like ExpertFlyer, FlightStats, ... but they are no "official" and may only show some reasons. This may be what you read about
Such as from EF
0590/01FEB
N BWI/LX
SKED BWI ORIG 544P GTD D13 SHIP 4249
ORD 655P TERM GTA B8
from flightstats

This shows the flight was cancelled about 4 hours prior to departure
Also so the number changes may on flight day