The extreme cold warning in New Orleans is pretty impressive.
...EXTREME COLD WARNING IN EFFECT FROM 6 PM SUNDAY TO NOON CST
TUESDAY...
* WHAT...Dangerously cold wind chills as low as 9 above expected.
* WHERE...Portions of southeast Louisiana and southern Mississippi.
* WHEN...From 6 PM Sunday to noon CST Tuesday.
* IMPACTS...Frostbite and hypothermia will occur if unprotected skin
is exposed to these temperatures. An extended period of freezing
temperatures could cause ruptured water pipes.