The 00z/4th Maniwaki, ON RAOB is just incredible. Tropopause height just above 850 mb, and 925 mb temp down to -34C.

Gray ME's RAOB shows its 925 temp is -31C.

We've still not really felt the core of the cold air yet. The steep lapse rate means it'll stay gusty for some time. pic.twitter.com/Jt2n2WqaxP

— Andrew Loconto (@AndrewLoconto) February 4, 2023