UPDATED FRIDAY AFTERNOON
Tonight: Mostly cloudy and windy with a 20% chance of a rain shower. Low: 34-38. Wind: SW to NW 15-30 mph.
Saturday: Partly cloudy and windy. High: 40-45. Wind: NW 15-30 mph.
Saturday Night: Mostly cloudy. High: 28-30. Wind: SW 10-15 mph.
Sunday: Mostly cloudy. High: mid-upper 40s.
Monday: Cloudy and windy (NE 15-25 mph) with a 70% chance of rain/snow. High: mid 30s.
Tuesday: Mostly cloudy and windy (N 10-20 mph). High: near 30.
Wednesday: Partly cloudy. High: upper 20s.
Thursday: Mostly sunny. High: upper 20s.
Friday: Mostly sunny. High: upper 20s.
The cold front over the Dakotas this afternoon is forecast to cross Iowa tonight. A few isolated light showers are possible, but most places will remain dry. If you get any rain it would be a trace to a couple of hundredths of an inch.
After the front crosses, the wind will increase from the northwest with gusts as high as 45 mph. A WIND ADVISORY is in effect tonight into early Saturday morning.
The chart below shows the wing diminishing after 3 pm Saturday as high pressure moves closer to the state.
We are tracking a storm forecast to bring our first measurable snow to parts of the area Monday/Monday Night. As of Friday evening the storm is located south of Alaska. The WPC forecast map for Monday morning has the low over the Kansas/Nebraska state line (see map below).
The amount of moisture available to this storm is about 0.50-0.75” (see map below).
If the amount is used as all snow, parts of the Midwest will have their first accumulating snow of the season. The best chance of 4 and possible 8 inches of snow is located across southern Minnesota (see map below).
Lighter snow amounts are possible across northern Iowa. There are many factors that can change this area of snow and amount between now and Monday. So be prepared for some changes in the forecast as the storm moves into the United States. At this point, the storm will be able to be sampled by the network of weather balloons launched by the National Weather Service two times a day. This data would be then put into the computer models and give us a better handle on the forecast.
The farther south you live from the Iowa/Minnesota state line the better chance of this being light rain and little to no accumulating snow…that is as of Friday evening. There will be adjustments to the as the day gets closer. So stay up to date on the latest forecast if you have any travel plans.
No matter what happens on Monday, there is one thing for certain…VERY COLD air is moving south.
A large area of cold air from Canada will be moving south and arrive in Iowa Monday night and it will stick around for about 1-2 weeks. High temperatures will be in the upper 20s and low temperatures a few degrees above 10. It is going to feel more like January. Here the 8-14 day outlook showing below normal temperatures and below normal precipitation through the 21st.
Posted under Forecast Discussion
This post was written by Schnack on November 7, 2014