In Brief:
Very cold air flows in as the snow departs.
Wednesday update:
The winter storm warning has been downgraded to a winter weather advisory. The last inch or two will fall by 7pm. Figure 2 update shows that 5 to 9 inches of snow fell across Longmont. Broomfield picked up 6.5 to 8.7 inches. Boulder topped out at 11 inches. Temperatures may approach -10F along I-25 tonight and not warm much on Thursday. We won't see temperatures above freezing until Friday. It will warm to around 38F.