* 12Z NAM/WRF model data prints out .44" for MSP Friday PM hours. That's a little less than last night's run, which printed out .56". With a snow/rain ratio close to 20/1 that could still translate into 4-8" for the western and southern suburbs, maybe 3-4" for the northern/eastern suburbs. I still feel (reasonably) comfortable saying 4-8" of light, fluffy, powdery snow during the PM hours tomorrow as an overall range for the metro area.
* Temperatures will be close to 20, which doesn't bode well for conditions on area highways. The chemicals MnDOT puts down work much faster when the mercury is close to 30-32 F. But at 20 F. these chemicals don't work nearly as quickly or effectively. Even the freeways may be snow-covered and icy by Friday evening. Plan on leaving 3 to 5 times more time to get around late in the day tomorrow.