Q: When is a quasi-stationary front not a quasi-stationary front?
A: When it’s still moving.
A quasi-stationary front can’t straddle the isobaric flow like this one does over the Borders in this Met OfficeUKMO The Meteorological Office is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy Analysis. For it to be quasi-stationary, it has to be truly “stationary”, and the front itself run parallel to the isobars. This front was originally a section of a cold front heading SE across Scotland, but it’s now a returning warm front that’s now heading westward.