"comp.john" wrote in message
...

How does 850mb temp correspond with surface temp at this time of year?
is -5 @ 850mb 0C at the surface?
--
comp.john

It's not really the best guide for surface temperatures as the boundary
layer conditions at this time of year can heavily modify a direct adiabatic
translation. However, to give you some idea, when 850mb temperatures were
around -4 around a week ago daytime surface temperatures were in the +4 to
+6 ballpark.

Jon.