fly.dsc.net can now send you an email when it notices a new TRA has been Notam'ed. You need to register first, but registering is as simple as entering your email address and a password. Then just set which FIR's you want Notams for at the bottom of the
Notam page.
Additionally, any AIC's that are mentioned in a Notam are now available with a single click from the text of the Notam itself.