TONGUE ZAPPER
I was looking at this article. I don't think this one missile can wipe out all of Texas. The one missile could do is to drop a 500kt warhead (about 30-40 times Hiroshima) in every sem-major city in Texas and maybe two or three in the major cities.
WRIGGLER
https://www.the-sun.com/news/2066284/russia-unstoappble-nuke-missile-destroy-texas/