UPDATED at 4:10 PM
Tonight: Snow heavy at times with blizzard conditions. Low: 23-28. Wind: NE 15-30 mph.
Thursday: Snow heavy at times before noon. Strong wind causing blizzard conditions all day. High: 25-30. Wind: NW 20-40 mph.
Thursday Night: Clear and windy with blowing snow and near blizzard conditions. Low: 5-9. Wind: NW 20-30 mph.
Friday: Mostly sunny. High: low 20s.
Saturday: Mostly sunny. High: low-mid 20s.
Sunday: Mostly sunny. High: low 20s.
Monday: Mostly cloudy. High: mid 20s.
Christmas Day: Mostly cloudy. High: low-mid 20s.
Wednesday: Mostly cloudy with a 20% chance of snow. High: low 20s.
An area of low pressure is centered over the Oklahoma panhandle early this afternoon. The forecast track is expected to move northeast into central Illinois by Thursday morning and Michigan by Thursday evening.
There is some warm air across southern Iowa this afternoon with rain showers. There will be a rain/snow mix as the precipitation begins to fall this evening south of Highway 20. The transition to all snow will occur fairly quickly tonight. North of 20 is expected to be all snow. The snow will increase in intensity as we get closer to midnight. Heavy snow will fall from midnight to about noon Thursday. Snowfall rates will be 1-1.5” per hour. The wind will increase after midnight and remain strong through Thursday causing blizzard conditions. The snow will taper off Thursday afternoon. Here are the storm totals:
Later tonight and Thursday the roads conditions will be terrible. Travel is not recommended after midnight into Thursday morning. The wind will be strong enough to produce snow drifts up to four feet in some locations. Country roads will most likely drift closed. Do not travel later tonight and Thursday morning unless you absolutely have to.
The wind will not diminish until early Friday morning.
Once the storm moves away, high pressure will move into the Midwest with dry weather and cold temperatures. More clouds are expected early next week with a chance of snow Wednesday.
This post was written by Schnack on December 19, 2012