This region really has some cooler force field over it. The rest of the country will turn ridiculously warm and stay that way.
SW US has Phoenix pushing 105+ and Vegas 100+ next week. GFS OP shows a ridiculous warm/cool gradient LR
Will still be quite chilly especially after the warmup.
Crazy heat SW US. Phoenix could have multiple 100+ readings and even Vegas approaching 100 in March, which is nuts. That's like us seeing 90s