UPDATED at 4:40 PM
Tonight: Partly to mostly cloudy with flurries northeast of Waterloo. Low: 15-21. Wind: S 5-15 mph.
Friday: Decreasing clouds, breezy and warm. High: 45-50. Wind: SW 10-20 mph.
Friday Night: Mostly clear. Low: 27-31. Wind: SW 10-15 mph.
Saturday: Partly cloudy and windy (NW 15-25 mph). High: low 40s in the AM….falling temps in the PM.
Sunday: Mostly cloudy and cold with a 20% chance of light snow/flurries. High: near 20.
Monday: Partly cloudy and cold. High: near 10.
Tuesday: Mostly cloudy and cold. High: mid teens.
Wednesday: Partly cloudy. High: low 20s.
Thursday: Mostly cloudy with a 20% chance of rain/snow. High: low 30s.
A warm front currently over the Dakotas will push through eastern Iowa tonight. Here is the current surface map.
Ahead of the front there is a chance of light snow in Minnesota and Wisconsin. Now here in Iowa I am leaning more toward just flurries. Areas northeast of Waterloo will see the snowflakes. I may have to include light snow into the forecast later tonight, but I want to hold off on putting it in the forecast right now. I want to see the trajectory of the light snow in North Dakota (see map below).
It is moving southeast. It will be a close call if the light snow makes it into northeast Iowa compared to just a few flurries. If I do add light snow to the forecast it would be for the 10 pm newscast. The chance of any precipitation would be after midnight anyway.
Friday will be a warm day with clouds clearing in the morning. The wind will increase from the southwest pushing highs into the 40s. As highs reach the mid and upper 40s you might think records. We will be short of any records Friday. Here are the numbers:
An Arctic cold front is forecast to cross Iowa early Saturday afternoon. The HPC forecast map for Saturday morning shows the front northwest of Iowa (see map below).
Temperatures will warm, into the low 40s, before the front arrives in eastern Iowa. The cold front will cross the state dry, but usher in a gusty northwest wind and much colder air.
Here is the WSI RPM model showing where the strongest wind will be Saturday afternoon.
There is a chance for some light snow/flurries Sunday. The coldest day of the next seven is forecast to be Monday with highs near 10. The coldest night will be Tuesday morning with lows near zero and in some locations below zero.
The arctic air does not hang around long as high temperatures slowly warm each day back to the low 30s by Thursday. At that time we are tracking an area of low pressure to bring us a chance of rain/snow.
Posted under Forecast Discussion
This post was written by Schnack on January 17, 2013