Uncorroborated tip sufficient for warrant.
Non-jurisdictional cutoff date for appeals waived, since the rules aren't jurisdictional, and the gov't described the brief as "early"
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2018/D08-13/C:17-2665:J:Easterbrook:aut:T:fnOp:N:2201016:S:0
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.