Good point - although most(?) people would probably take that as a week after the forthcoming Tuesday - although what about last Tuesday week?
Welsh has an interesting approach to similar problems. English has "yesterday, today, tomorrow" as single words. Welsh has single words for today-2 days (echdoe), today-1 day (ddoe), today (heddiw), tomorrow (yfory), today+2 days(trenydd) and today+3 days (tradwy), and as a bonus 'the following day (tranoeth)'(not just tomorrow) and 'the night before last (echnos)'.
And curiously, the Welsh word for 'week' (wythnos) translates as eight-night.
English is so long-winded sometimes...