AlertProcedures.pdf (acbl.org) Link to ACBL From ACBL alert pamphlet: "Note: A non-forcing suit response to a weak two-bid requires an Alert. A simple raise(2♥-P-3♥, for example) of a weak two-bid that is invitational or better requires an Alert." If you notice on your convention card under weak 2's a new suit non-forcing is in red and thus requires an alert