Good evening Iowa Storm Chasing Network followers. We just wanted to break down the rest of the week, and show what the models are forecasting over the next 48 to 72 hours.
Temperatures will be warming up above freezing, which will keep any precipitation that falls on Thursday in the form of rain. It will not be until a strong cold front moves through the state Friday that temperatures will fall below freezing. This cold front will usher in temperatures in the teens, with wind chills 10 to 20-degrees below zero.
As you can see from this graphic, this evenings 00z NAM shows a swath of accumulating snow across northwest Iowa. At the top of this post, the 00z WRF was also posted. Snowfall accumulation will begin Thursday evening and into the day Friday. Light snowfall accumulations of 1″ to 4″ will be possible. Strong winds near 35mph will create for blowing snow, which will reduce visibility.
The one thing we will be watching is how Saturday plays out. This afternoon, the 18z GFS had snow accumulating across central and eastern Iowa. This evening, it has shifted south, and is in agreement with the NAM and ECMWF. Due to this, would likely see accumulating snow on Saturday from central Missouri into western Illinois. At this point and time, looks like 3″ to 6″ may be possible. Still very early for rock solid numbers, but it will be something we certainly watch as we get closer to Saturday.
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