Storm Summary & Preliminary Projection for Friday Night-Saturday A.M.December 26th, 2012 at 11:28 pm by Chad Evans under Chad's WLFI Weather Blog
Snowfall totals & measured peak wind gusts are below:
I have just enough confidence in the data to at least put out a snowfall projection map for Friday night-Saturday morning. However, my confidence in the details regarding exact timing, system phasing or not phasing & solid totals is not overly high.
We will watch.
Right now it looks like most of the snow will be northwest of here with the good dynamics & nice frontal forcing. Nice jet dynamics over frontagenetical forcing in the Snow Growth Zone (SGZ) usually makes nice, nice dendrite growth for flakes! (Frontagenetical forcing refers to the temperature contrast in the mid-level SGZ). This could make some nice meso-scale banding in Nebraska & western Iowa with up to 7″ of snowfall in places (even with limited moisture). Then, the dynamics & frontal forcing currently appear to weaken some over us with most of it focused just to our north. It also appears good merging of polar & subtropical jets may not occur until everything is east of here, thus cutting down on our totals.
Current GFS model does not have the merger occurring until everything is off to our east, but some snow here.
HOWEVER, If there is a good merger of the two jets & those dynamics hold on better, we may have a much more substantial event to talk about.
Will stick with wording of “some minor snowfall accumulation”.