Yea, the liabilities are the key IMO. Plus the ability to Zoom up a day. If they get kids in school and it is still snow at 3-4PM it is a total disaster that is fireable for some.
IF an area is getting 3" or 4" and the snow has already started I doubt they roll the busses. But 2-4" would probably preclude the risk of a 2 day snow break.
LOL. Could be 4 in MDT and 4 in KHan and both numbers are right but more potential south obviously. 2-4" of snow with highs in the mid to upper 20's is more than a nuisance event. It is a school closer.
I do not believe this is a 100% bowling ball vs. a transfer at some point with limited coastal/500 add on. So Philly....lets say a lot less than the HRRR and Nam show. LOL. 3-5" for Marysville proper. For once you are fighting against the DP.
This link, when filled in with date, type of date and time period, will show you the exact models used for that output.
https://blend.mdl.nws.noaa.gov/nbm-dashboard