Westmeath are the first team into the O'Byrne Cup final after an eye-catching 12-point win against their neighbours Longford.
Callum McCormack and Sean Flanagan scored the goals in either half for Jack Cooney's side.
The Lake County await the winners of this evening's second semi-final between Dublin and Meath.
Throw-in at Parnell Park is at 7pm.