Regional Weather Summary
Issued by NWS Des Moines, IA

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AWUS83 KDMX 141048

Weather Summary for Iowa
National Weather Service Des Moines IA
448 AM CST Sun Jan 14 2018

Clouds and slightly warmer air continue to stream into southwest Iowa
early this morning. Temperatures remained below zero northeast and
ranged from 6 below there to the teens above zero in the southwest.
Southeast winds of 5 to 15 mph were common across Iowa early today.
Light snow accompanies the warmer air over the southwest early today
as well and will expand east into southern Iowa later today.

A couple of weather systems will affect Iowa through tonight. The
first is affecting southwest and southern Iowa today with periods of
light snow and warmer temperatures today with highs in the teens and
20s. The second will be stronger and track across northeast to eastern
Iowa by early Monday morning. This will likely drop 1 to 4 inches of
snow from central to northeast Iowa where the heaviest snowfall is
likely. Immediately following the snow northwest winds will increase
after midnight tonight and Arctic air will move quickly southeast in
the next 24 hours. The winds may initially cause some patchy blowing
snow over areas that receive 2 or more inches of snow tonight and
tomorrow. By Monday morning wind chill values in northern Iowa will
already fall to 20 below zero or colder. Advisories for wind chills
are now posted for the northern half of Iowa and Minnesota. Wind
chill warnings are in effect already for northwest Iowa and portions
of Minnesota from Monday evening through Tuesday. With the cold air
spreading southeast...lows tonight will be sub zero north and in the
single digits south.

The bitter cold air will increase through the day Monday into Monday
night across most of Iowa and surrounding states. By Monday night into
Tuesday morning wind chill values will approach 30 to 40 below over
northern Iowa with readings 20 or more below over the remainder of
the state. This will likely lead to more warnings and advisories for
the cold at that time. Highs Tuesday will range from 0 to 10 above
across Iowa. The brutal cold will hold on through Tuesday night and
begin to move out by Wednesday Highs Wednesday will recover into the
teens to lower 20s statewide and finally by Thursday into Friday most
of the region will finally be above freezing.


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