UPDATED POST: Friday, November 20,2015, 3:55 p.m.
Snow is already falling across much of central and western Iowa and there have been snowflakes Friday afternoon in eastern Iowa and northwestern Illinois.
The “Winter Storm Warning” and the “Winter Weather Advisory” issued this morning are still in place until noon Saturday.
Looking at the latest data just coming in gives me confidence in my earlier forecast and blog update.
The snow will become widespread into the early evening across the north and spread into the Quad Cities and southern hometowns this evening and early tonight.
It will become heavy overnight with about a nine-hour window of moderate snow.
Looking at the snow forecast map from earlier today, I’m inclined to think that the final totals will be on the high end of the range.
In our far northern hometowns, a few spots could get a foot of snow!
By the way, I went to the grocery this afternoon for two things. Big mistake! I think all of Moline was there.
Have a great weekend and be safe. Make the best of it if you’re not a snow lover.
ORIGINAL POST: Friday, November 20,2015, 4:14 a.m.
Here’s the short and sweet (or not so sweet for those that don’t want snow) for the significant winter storm coming in Friday evening through Saturday morning.
It looks like a lot of snow will be falling in the overnight hours.
All of the area is now under either a “Winter Storm Warning” (yellow — 6 p.m. Friday through noon Saturday) or a “Winter Weather Advisory” (blue — 9 p.m. Friday through noon Saturday).
A rain and snow mix will begin this afternoon across the area and it’ll be all rain from the Quad Cities southward.
The rain/snow mix will change to all snow north later this evening north and west, in the Quad Cities before midnight, and then to all snow overnight for the rest of the area.
After midnight, snow will be coming down at a moderate to heavy clip and that’s when we’ll get the most accumulation.
The snow should wind down for all of the area by noon Saturday. After that, it’ll be bitterly cold Sunday morning with lows in the single digits to near 10°.
Now, before I post my updated (and higher) snowfall forecast map, I want to say that I’m still very concerned about how long we see rain or a rain/snow mix before the transition to all snow AND, most of all, the warm ground temperatures.
While I do expect moderate to heavy snowfall amounts because it will be coming down hard in the overnight hours Friday into Saturday, I really wouldn’t be surprised that some of the snow compacts and melts and lowers the final snowfall totals.
Keep up on the latest updates through Friday.