The temperature at the observatory on the top of Mount Washington NH is currently -43F (-42C), expected peak wind gusts are in the range of of 130 MPH (208 km/hr) and the current windchill is -107F (-77C).
The limits of the troposphere may be so depressed by the extreme weather tonight, that the top of Mount Washington might actually reside in the stratosphere.
Mount Washington is known for extreme weather conditions. The highest non cyclonic wind gust in history was recorded at Mount Washington in 1934 - 231 MPH (370 km/hr).